[llvm-branch-commits] [clang] [llvm] [ConstantTime][WebAssembly] Add comprehensive tests for ct.select (PR #166709)
Julius Alexandre via llvm-branch-commits
llvm-branch-commits at lists.llvm.org
Fri May 22 18:10:06 PDT 2026
https://github.com/wizardengineer updated https://github.com/llvm/llvm-project/pull/166709
>From 27b0dfa9a31f0b7985e09384309448670cedad00 Mon Sep 17 00:00:00 2001
From: wizardengineer <juliuswoosebert at gmail.com>
Date: Wed, 5 Nov 2025 10:56:34 -0500
Subject: [PATCH 1/4] [ConstantTime][Clang] Add __builtin_ct_select for
constant-time selection
---
clang/docs/LanguageExtensions.rst | 44 ++
clang/include/clang/Basic/Builtins.td | 8 +
clang/lib/CodeGen/CGBuiltin.cpp | 13 +
clang/lib/Sema/SemaChecking.cpp | 64 ++
.../test/Sema/builtin-ct-select-edge-cases.c | 373 ++++++++++
clang/test/Sema/builtin-ct-select.c | 683 ++++++++++++++++++
6 files changed, 1185 insertions(+)
create mode 100644 clang/test/Sema/builtin-ct-select-edge-cases.c
create mode 100644 clang/test/Sema/builtin-ct-select.c
diff --git a/clang/docs/LanguageExtensions.rst b/clang/docs/LanguageExtensions.rst
index 03cb02deb5e7f..6f5cd5f95cdb0 100644
--- a/clang/docs/LanguageExtensions.rst
+++ b/clang/docs/LanguageExtensions.rst
@@ -7332,3 +7332,47 @@ Clang fails to reject some code that should be rejected. e.g.,
// own initializer rather than rejecting the code with an undeclared identifier
// diagnostic.
auto x = x;
+
+.. _langext-__builtin_ct_select:
+
+``__builtin_ct_select``
+-----------------------
+
+``__builtin_ct_select`` performs a constant-time conditional selection between
+two values. Unlike the ternary operator ``?:``, this builtin is designed to
+execute in constant time regardless of the condition value, making it suitable
+for cryptographic and security-sensitive code where timing side-channels must
+be avoided.
+
+**Syntax**:
+
+.. code-block:: c++
+
+ __builtin_ct_select(condition, true_value, false_value)
+
+**Examples**:
+
+.. code-block:: c++
+
+ // Select between two integers
+ int result = __builtin_ct_select(secret_bit, value_a, value_b);
+
+ // Select between two pointers
+ int *ptr = __builtin_ct_select(condition, ptr_a, ptr_b);
+
+ // Select between two floating-point values
+ double d = __builtin_ct_select(flag, 1.0, 2.0);
+
+**Description**:
+
+The first argument is an integer condition that is converted to a boolean
+(non-zero is true, zero is false). The second and third arguments must have
+the same scalar or vector type. The builtin returns the second argument if
+the condition is true, otherwise the third argument.
+
+The operation is guaranteed to be lowered to constant-time machine code that
+does not branch on the condition value, preventing timing-based side-channel
+attacks.
+
+Query for this feature with ``__has_builtin(__builtin_ct_select)``.
+
diff --git a/clang/include/clang/Basic/Builtins.td b/clang/include/clang/Basic/Builtins.td
index 40ec94ab75046..389754a37f7e3 100644
--- a/clang/include/clang/Basic/Builtins.td
+++ b/clang/include/clang/Basic/Builtins.td
@@ -5810,3 +5810,11 @@ def CountedByRef : Builtin {
let Attributes = [NoThrow, CustomTypeChecking];
let Prototype = "int(...)";
}
+
+// Constant-time select builtin
+def CtSelect : Builtin {
+ let Spellings = ["__builtin_ct_select"];
+ let Attributes = [NoThrow, Const, UnevaluatedArguments,
+ ConstIgnoringExceptions, CustomTypeChecking];
+ let Prototype = "void(...)";
+}
diff --git a/clang/lib/CodeGen/CGBuiltin.cpp b/clang/lib/CodeGen/CGBuiltin.cpp
index cac1628e68721..f69390b4ace57 100644
--- a/clang/lib/CodeGen/CGBuiltin.cpp
+++ b/clang/lib/CodeGen/CGBuiltin.cpp
@@ -6668,6 +6668,19 @@ RValue CodeGenFunction::EmitBuiltinExpr(const GlobalDecl GD, unsigned BuiltinID,
auto Str = CGM.GetAddrOfConstantCString(Name, "");
return RValue::get(Str.getPointer());
}
+ case Builtin::BI__builtin_ct_select: {
+ auto *Cond = EmitScalarExpr(E->getArg(0));
+ auto *A = EmitScalarExpr(E->getArg(1));
+ auto *B = EmitScalarExpr(E->getArg(2));
+
+ if (Cond->getType()->getIntegerBitWidth() != 1)
+ Cond = Builder.CreateICmpNE(
+ Cond, llvm::ConstantInt::get(Cond->getType(), 0), "cond.bool");
+
+ llvm::Function *Fn =
+ CGM.getIntrinsic(llvm::Intrinsic::ct_select, {A->getType()});
+ return RValue::get(Builder.CreateCall(Fn, {Cond, A, B}));
+ }
}
// If this is an alias for a lib function (e.g. __builtin_sin), emit
diff --git a/clang/lib/Sema/SemaChecking.cpp b/clang/lib/Sema/SemaChecking.cpp
index cc834bbee23c4..e5a15c84de8d3 100644
--- a/clang/lib/Sema/SemaChecking.cpp
+++ b/clang/lib/Sema/SemaChecking.cpp
@@ -3928,6 +3928,70 @@ Sema::CheckBuiltinFunctionCall(FunctionDecl *FDecl, unsigned BuiltinID,
if (BuiltinCountedByRef(TheCall))
return ExprError();
break;
+
+ case Builtin::BI__builtin_ct_select: {
+ if (TheCall->getNumArgs() != 3) {
+ // Simple argument count check without complex diagnostics
+ if (TheCall->getNumArgs() < 3) {
+ return Diag(TheCall->getEndLoc(),
+ diag::err_typecheck_call_too_few_args_at_least)
+ << 0 << 3 << TheCall->getNumArgs() << 0
+ << TheCall->getCallee()->getSourceRange();
+ } else {
+ return Diag(TheCall->getEndLoc(),
+ diag::err_typecheck_call_too_many_args)
+ << 0 << 3 << TheCall->getNumArgs() << 0
+ << TheCall->getCallee()->getSourceRange();
+ }
+ }
+ auto *Cond = TheCall->getArg(0);
+ auto *A = TheCall->getArg(1);
+ auto *B = TheCall->getArg(2);
+
+ QualType CondTy = Cond->getType();
+ if (!CondTy->isIntegerType()) {
+ return Diag(Cond->getBeginLoc(), diag::err_typecheck_cond_expect_scalar)
+ << CondTy << Cond->getSourceRange();
+ }
+
+ ExprResult ARes = DefaultFunctionArrayLvalueConversion(A);
+ ExprResult BRes = DefaultFunctionArrayLvalueConversion(B);
+ if (ARes.isInvalid() || BRes.isInvalid())
+ return ExprError();
+
+ A = ARes.get();
+ B = BRes.get();
+ TheCall->setArg(1, A);
+ TheCall->setArg(2, B);
+
+ QualType ATy = A->getType();
+ QualType BTy = B->getType();
+
+ // check for scalar or vector scalar type
+ if ((!ATy->isScalarType() && !ATy->isVectorType()) ||
+ (!BTy->isScalarType() && !BTy->isVectorType())) {
+ return Diag(A->getBeginLoc(),
+ diag::err_typecheck_cond_incompatible_operands)
+ << ATy << BTy << A->getSourceRange() << B->getSourceRange();
+ }
+
+ // Check if both operands have the same type or can be implicitly converted
+ if (!Context.hasSameType(ATy, BTy)) {
+ // For non-arithmetic types, they must be exactly the same
+ return Diag(A->getBeginLoc(),
+ diag::err_typecheck_cond_incompatible_operands)
+ << ATy << BTy << A->getSourceRange() << B->getSourceRange();
+ }
+
+ QualType ResultTy = ATy;
+ ExprResult CondRes = PerformContextuallyConvertToBool(Cond);
+ if (CondRes.isInvalid())
+ return ExprError();
+
+ TheCall->setArg(0, CondRes.get());
+ TheCall->setType(ResultTy);
+ return TheCall;
+ }
}
if (getLangOpts().HLSL && HLSL().CheckBuiltinFunctionCall(BuiltinID, TheCall))
diff --git a/clang/test/Sema/builtin-ct-select-edge-cases.c b/clang/test/Sema/builtin-ct-select-edge-cases.c
new file mode 100644
index 0000000000000..167b19bf20663
--- /dev/null
+++ b/clang/test/Sema/builtin-ct-select-edge-cases.c
@@ -0,0 +1,373 @@
+// RUN: %clang_cc1 -fsyntax-only -verify %s
+// RUN: %clang_cc1 -fsyntax-only -verify %s -fexperimental-new-constant-interpreter
+
+// Test with various condition expressions
+int test_conditional_expressions(int x, int y, int a, int b) {
+ // Logical expressions
+ int result1 = __builtin_ct_select(x && y, a, b);
+ int result2 = __builtin_ct_select(x || y, a, b);
+ int result3 = __builtin_ct_select(!x, a, b);
+
+ // Comparison expressions
+ int result4 = __builtin_ct_select(x == y, a, b);
+ int result5 = __builtin_ct_select(x != y, a, b);
+ int result6 = __builtin_ct_select(x < y, a, b);
+ int result7 = __builtin_ct_select(x > y, a, b);
+ int result8 = __builtin_ct_select(x <= y, a, b);
+ int result9 = __builtin_ct_select(x >= y, a, b);
+
+ // Bitwise expressions
+ int result10 = __builtin_ct_select(x & y, a, b);
+ int result11 = __builtin_ct_select(x | y, a, b);
+ int result12 = __builtin_ct_select(x ^ y, a, b);
+ int result13 = __builtin_ct_select(~x, a, b);
+
+ // Arithmetic expressions
+ int result14 = __builtin_ct_select(x + y, a, b);
+ int result15 = __builtin_ct_select(x - y, a, b);
+ int result16 = __builtin_ct_select(x * y, a, b);
+ int result17 = __builtin_ct_select(x / y, a, b);
+ int result18 = __builtin_ct_select(x % y, a, b);
+
+ return result1 + result2 + result3 + result4 + result5 + result6 + result7 + result8 + result9 + result10 + result11 + result12 + result13 + result14 + result15 + result16 + result17 + result18;
+}
+
+// Test with extreme values
+int test_extreme_values(int cond) {
+ // Maximum and minimum values
+ int max_int = __builtin_ct_select(cond, __INT_MAX__, -__INT_MAX__ - 1);
+
+ // Very large numbers
+ long long max_ll = __builtin_ct_select(cond, __LONG_LONG_MAX__, -__LONG_LONG_MAX__ - 1);
+
+ // Floating point extremes
+ float max_float = __builtin_ct_select(cond, __FLT_MAX__, -__FLT_MAX__);
+ double max_double = __builtin_ct_select(cond, __DBL_MAX__, -__DBL_MAX__);
+
+ return max_int;
+}
+
+// Test with zero and negative zero
+int test_zero_values(int cond) {
+ // Integer zeros
+ int zero_int = __builtin_ct_select(cond, 0, -0);
+
+ // Floating point zeros
+ float zero_float = __builtin_ct_select(cond, 0.0f, -0.0f);
+ double zero_double = __builtin_ct_select(cond, 0.0, -0.0);
+
+ return zero_int;
+}
+
+// Test with infinity and NaN
+int test_special_float_values(int cond) {
+ // Infinity
+ float inf_float = __builtin_ct_select(cond, __builtin_inff(), -__builtin_inff());
+ double inf_double = __builtin_ct_select(cond, __builtin_inf(), -__builtin_inf());
+
+ // NaN
+ float nan_float = __builtin_ct_select(cond, __builtin_nanf(""), __builtin_nanf(""));
+ double nan_double = __builtin_ct_select(cond, __builtin_nan(""), __builtin_nan(""));
+
+ return 0;
+}
+
+// Test with complex pointer scenarios
+int test_pointer_edge_cases(int cond) {
+ int arr[10];
+ int *ptr1 = arr;
+ int *ptr2 = arr + 5;
+
+ // Array pointers
+ int *result1 = __builtin_ct_select(cond, ptr1, ptr2);
+
+ // Pointer arithmetic
+ int *result2 = __builtin_ct_select(cond, arr + 1, arr + 2);
+
+ // NULL vs non-NULL
+ int *result3 = __builtin_ct_select(cond, ptr1, (int*)0);
+
+ // Different pointer types (should fail)
+ float *fptr = (float*)0;
+ int *result4 = __builtin_ct_select(cond, ptr1, fptr); // expected-error {{incompatible operand types ('int *' and 'float *')}}
+
+ return *result1;
+}
+
+// Test with function pointers
+int func1(int x) { return x; }
+int func2(int x) { return x * 2; }
+float func3(float x) { return x; }
+
+int test_function_pointers(int cond, int x) {
+ // Same signature function pointer
+ int (*fptr)(int) = __builtin_ct_select(cond, &func1, &func2);
+
+ // Different signature function pointers (should fail)
+ int (*bad_fptr)(int) = __builtin_ct_select(cond, &func1, &func3); // expected-error {{incompatible operand types ('int (*)(int)' and 'float (*)(float)')}}
+
+ return fptr(x);
+}
+
+// Test with void pointers
+void *test_void_pointers(int cond, void *a, void *b) {
+ return __builtin_ct_select(cond, a, b);
+}
+
+// Test with const/volatile qualifiers
+int test_qualifiers(int cond) {
+ const int ca = 10;
+ const int cb = 20;
+ volatile int va = 30;
+ volatile int vb = 40;
+ const volatile int cva = 50;
+ const volatile int cvb = 60;
+
+ // const to const
+ const int result1 = __builtin_ct_select(cond, ca, cb);
+
+ // volatile to volatile
+ volatile int result2 = __builtin_ct_select(cond, va, vb);
+
+ // const volatile to const volatile
+ const volatile int result3 = __builtin_ct_select(cond, cva, cvb);
+
+ return result1 + result2 + result3;
+}
+
+// Test with arrays (should fail as they're not arithmetic or pointer)
+int test_arrays(int cond) {
+ int arr1[5] = {1, 2, 3, 4, 5};
+ int arr2[5] = {6, 7, 8, 9, 10};
+
+ // This should fail??
+ int *result = __builtin_ct_select(cond, arr1, arr2);
+
+ return result[0];
+}
+
+// Test with structures (should fail)
+struct Point {
+ int x, y;
+};
+
+struct Point test_structs(int cond) {
+ struct Point p1 = {1, 2};
+ struct Point p2 = {3, 4};
+
+ return __builtin_ct_select(cond, p1, p2); // expected-error {{incompatible operand types ('struct Point' and 'struct Point')}}
+}
+
+// Test with unions (should fail)
+union Data {
+ int i;
+ float f;
+};
+
+union Data test_unions(int cond) {
+ union Data d1 = {.i = 10};
+ union Data d2 = {.i = 20};
+
+ return __builtin_ct_select(cond, d1, d2); // expected-error {{incompatible operand types ('union Data' and 'union Data')}}
+}
+
+// Test with bit fields (should work as they're integers)
+struct BitField {
+ int a : 4;
+ int b : 4;
+};
+
+int test_bit_fields(int cond) {
+ struct BitField bf1 = {1, 2};
+ struct BitField bf2 = {3, 4};
+
+ // Individual bit fields should work
+ int result1 = __builtin_ct_select(cond, bf1.a, bf2.a);
+ int result2 = __builtin_ct_select(cond, bf1.b, bf2.b);
+
+ return result1 + result2;
+}
+
+// Test with designated initializers
+int test_designated_init(int cond) {
+ int arr1[3] = {[0] = 1, [1] = 2, [2] = 3};
+ int arr2[3] = {[0] = 4, [1] = 5, [2] = 6};
+
+ // Access specific elements
+ int result1 = __builtin_ct_select(cond, arr1[0], arr2[0]);
+ int result2 = __builtin_ct_select(cond, arr1[1], arr2[1]);
+
+ return result1 + result2;
+}
+
+// Test with complex expressions in arguments
+int complex_expr(int x) { return x * x; }
+
+int test_complex_arguments(int cond, int x, int y) {
+ // Function calls as arguments
+ int result1 = __builtin_ct_select(cond, complex_expr(x), complex_expr(y));
+
+ // Ternary operator as arguments
+ int result2 = __builtin_ct_select(cond, x > 0 ? x : -x, y > 0 ? y : -y);
+
+ // Compound literals
+ int result3 = __builtin_ct_select(cond, (int){x}, (int){y});
+
+ return result1 + result2 + result3;
+}
+
+// Test with preprocessor macros
+#define MACRO_A 42
+#define MACRO_B 24
+#define MACRO_COND(x) (x > 0)
+
+int test_macros(int x) {
+ int result1 = __builtin_ct_select(MACRO_COND(x), MACRO_A, MACRO_B);
+
+ // Nested macros
+ #define NESTED_SELECT(c, a, b) __builtin_ct_select(c, a, b)
+ int result2 = NESTED_SELECT(x, 10, 20);
+
+ return result1 + result2;
+}
+
+// Test with string literals (should fail)
+const char *test_strings(int cond) {
+ return __builtin_ct_select(cond, "hello", "world");
+}
+
+// Test with variable length arrays (VLA)
+int test_vla(int cond, int n) {
+ int vla1[n];
+ int vla2[n];
+
+ // Individual elements should work
+ vla1[0] = 1;
+ vla2[0] = 2;
+ int result = __builtin_ct_select(cond, vla1[0], vla2[0]);
+
+ return result;
+}
+
+// Test with typedef
+typedef int MyInt;
+typedef float MyFloat;
+
+MyInt test_typedef(int cond, MyInt a, MyInt b) {
+ return __builtin_ct_select(cond, a, b);
+}
+
+// Test with different typedef types (should fail)
+MyInt test_different_typedef(int cond, MyInt a, MyFloat b) {
+ return __builtin_ct_select(cond, a, b); // expected-error {{incompatible operand types ('MyInt' (aka 'int') and 'MyFloat' (aka 'float'))}}
+}
+
+// Test with side effects (should be evaluated)
+int side_effect_counter = 0;
+int side_effect_func(int x) {
+ side_effect_counter++;
+ return x;
+}
+
+int test_side_effects(int cond) {
+ // Both arguments should be evaluated
+ int result = __builtin_ct_select(cond, side_effect_func(10), side_effect_func(20));
+ return result;
+}
+
+// Test with goto labels (context where expressions are used)
+int test_goto_context(int cond, int a, int b) {
+ int result = __builtin_ct_select(cond, a, b);
+
+ if (result > 0) {
+ goto positive;
+ } else {
+ goto negative;
+ }
+
+positive:
+ return result;
+
+negative:
+ return -result;
+}
+
+// Test with switch statements
+int test_switch_context(int cond, int a, int b) {
+ int result = __builtin_ct_select(cond, a, b);
+
+ switch (result) {
+ case 0:
+ return 0;
+ case 1:
+ return 1;
+ default:
+ return -1;
+ }
+}
+
+// Test with loops
+int test_loop_context(int cond, int a, int b) {
+ int result = __builtin_ct_select(cond, a, b);
+ int sum = 0;
+
+ for (int i = 0; i < result; i++) {
+ sum += i;
+ }
+
+ return sum;
+}
+
+// Test with recursive functions
+int factorial(int n) {
+ if (n <= 1) return 1;
+ return n * factorial(n - 1);
+}
+
+int test_recursive(int cond, int n) {
+ int result = __builtin_ct_select(cond, n, n + 1);
+ return factorial(result);
+}
+
+// Test with inline functions
+static inline int inline_func(int x) {
+ return x * 2;
+}
+
+int test_inline(int cond, int a, int b) {
+ return __builtin_ct_select(cond, inline_func(a), inline_func(b));
+}
+
+// Test with static variables
+int test_static_vars(int cond) {
+ static int static_a = 10;
+ static int static_b = 20;
+
+ return __builtin_ct_select(cond, static_a, static_b);
+}
+
+// Test with extern variables
+extern int extern_a;
+extern int extern_b;
+
+int test_extern_vars(int cond) {
+ return __builtin_ct_select(cond, extern_a, extern_b);
+}
+
+// Test with register variables
+int test_register_vars(int cond) {
+ register int reg_a = 30;
+ register int reg_b = 40;
+
+ return __builtin_ct_select(cond, reg_a, reg_b);
+}
+
+// Test with thread-local variables (C11)
+#if __STDC_VERSION__ >= 201112L
+_Thread_local int tls_a = 50;
+_Thread_local int tls_b = 60;
+
+int test_tls_vars(int cond) {
+ return __builtin_ct_select(cond, tls_a, tls_b);
+}
+#endif
diff --git a/clang/test/Sema/builtin-ct-select.c b/clang/test/Sema/builtin-ct-select.c
new file mode 100644
index 0000000000000..7f2d9291299d6
--- /dev/null
+++ b/clang/test/Sema/builtin-ct-select.c
@@ -0,0 +1,683 @@
+// RUN: %clang_cc1 -emit-llvm -o - %s | FileCheck %s
+
+// Test integer types
+int test_int(int cond, int a, int b) {
+ // CHECK-LABEL: define {{.*}} @test_int
+ // CHECK: [[COND:%.*]] = icmp ne i32 %{{.*}}, 0
+ // CHECK: [[RESULT:%.*]] = call i32 @llvm.ct.select.i32(i1 [[COND]], i32 %{{.*}}, i32 %{{.*}})
+ // CHECK: ret i32 [[RESULT]]
+ return __builtin_ct_select(cond, a, b);
+}
+
+long long test_long(int cond, long long a, long long b) {
+ // CHECK-LABEL: define {{.*}} @test_long
+ // CHECK: [[COND:%.*]] = icmp ne i32 %{{.*}}, 0
+ // CHECK: [[RESULT:%.*]] = call i64 @llvm.ct.select.i64(i1 [[COND]], i64 %{{.*}}, i64 %{{.*}})
+ // CHECK: ret i64 [[RESULT]]
+ return __builtin_ct_select(cond, a, b);
+}
+
+short test_short(int cond, short a, short b) {
+ // CHECK-LABEL: define {{.*}} @test_short
+ // CHECK: [[COND:%.*]] = icmp ne i32 %{{.*}}, 0
+ // CHECK: [[RESULT:%.*]] = call i16 @llvm.ct.select.i16(i1 [[COND]], i16 %{{.*}}, i16 %{{.*}})
+ // CHECK: ret i16 [[RESULT]]
+ return __builtin_ct_select(cond, a, b);
+}
+
+unsigned char test_uchar(int cond, unsigned char a, unsigned char b) {
+ // CHECK-LABEL: define {{.*}} @test_uchar
+ // CHECK: [[COND:%.*]] = icmp ne i32 %{{.*}}, 0
+ // CHECK: [[RESULT:%.*]] = call i8 @llvm.ct.select.i8(i1 [[COND]], i8 %{{.*}}, i8 %{{.*}})
+ // CHECK: ret i8 [[RESULT]]
+ return __builtin_ct_select(cond, a, b);
+}
+
+long long test_longlong(int cond, long long a, long long b) {
+ // CHECK-LABEL: define {{.*}} @test_longlong
+ // CHECK: [[COND:%.*]] = icmp ne i32 %{{.*}}, 0
+ // CHECK: [[RESULT:%.*]] = call i64 @llvm.ct.select.i64(i1 [[COND]], i64 %{{.*}}, i64 %{{.*}})
+ // CHECK: ret i64 [[RESULT]]
+ return __builtin_ct_select(cond, a, b);
+}
+
+// Test floating point types
+float test_float(int cond, float a, float b) {
+ // CHECK-LABEL: define {{.*}} @test_float
+ // CHECK: [[COND:%.*]] = icmp ne i32 %{{.*}}, 0
+ // CHECK: [[RESULT:%.*]] = call float @llvm.ct.select.f32(i1 [[COND]], float %{{.*}}, float %{{.*}})
+ // CHECK: ret float [[RESULT]]
+ return __builtin_ct_select(cond, a, b);
+}
+
+double test_double(int cond, double a, double b) {
+ // CHECK-LABEL: define {{.*}} @test_double
+ // CHECK: [[COND:%.*]] = icmp ne i32 %{{.*}}, 0
+ // CHECK: [[RESULT:%.*]] = call double @llvm.ct.select.f64(i1 [[COND]], double %{{.*}}, double %{{.*}})
+ // CHECK: ret double [[RESULT]]
+ return __builtin_ct_select(cond, a, b);
+}
+
+// Test pointer types
+int *test_pointer(int cond, int *a, int *b) {
+ // CHECK-LABEL: define {{.*}} @test_pointer
+ // CHECK: [[COND:%.*]] = icmp ne i32 %{{.*}}, 0
+ // CHECK: [[RESULT:%.*]] = call ptr @llvm.ct.select.p0(i1 [[COND]], ptr %{{.*}}, ptr %{{.*}})
+ // CHECK: ret ptr [[RESULT]]
+ return __builtin_ct_select(cond, a, b);
+}
+
+// Test with different condition types
+int test_char_cond(char cond, int a, int b) {
+ // CHECK-LABEL: define {{.*}} @test_char_cond
+ // CHECK: [[COND:%.*]] = icmp ne i8 %{{.*}}, 0
+ // CHECK: [[RESULT:%.*]] = call i32 @llvm.ct.select.i32(i1 [[COND]], i32 %{{.*}}, i32 %{{.*}})
+ // CHECK: ret i32 [[RESULT]]
+ return __builtin_ct_select(cond, a, b);
+}
+
+int test_long_cond(long long cond, int a, int b) {
+ // CHECK-LABEL: define {{.*}} @test_long_cond
+ // CHECK: [[COND:%.*]] = icmp ne i64 %{{.*}}, 0
+ // CHECK: [[RESULT:%.*]] = call i32 @llvm.ct.select.i32(i1 [[COND]], i32 %{{.*}}, i32 %{{.*}})
+ // CHECK: ret i32 [[RESULT]]
+ return __builtin_ct_select(cond, a, b);
+}
+
+// Test with boolean condition
+int test_bool_cond(_Bool cond, int a, int b) {
+ // CHECK-LABEL: define {{.*}} @test_bool_cond
+ // CHECK: [[COND:%.*]] = icmp ne i8 %{{.*}}, 0
+ // CHECK: [[RESULT:%.*]] = call i32 @llvm.ct.select.i32(i1 [[COND]], i32 %{{.*}}, i32 %{{.*}})
+ // CHECK: ret i32 [[RESULT]]
+ return __builtin_ct_select(cond, a, b);
+}
+
+// Test with constants
+int test_constant_cond(void) {
+ // CHECK-LABEL: define {{.*}} @test_constant_cond
+ // CHECK: [[RESULT:%.*]] = call i32 @llvm.ct.select.i32(i1 true, i32 42, i32 24)
+ // CHECK: ret i32 [[RESULT]]
+ return __builtin_ct_select(1, 42, 24);
+}
+
+int test_zero_cond(void) {
+ // CHECK-LABEL: define {{.*}} @test_zero_cond
+ // CHECK: [[RESULT:%.*]] = call i32 @llvm.ct.select.i32(i1 false, i32 42, i32 24)
+ // CHECK: ret i32 [[RESULT]]
+ return __builtin_ct_select(0, 42, 24);
+}
+
+// Test type promotion
+int test_promotion(int cond, short a, short b) {
+ // CHECK-LABEL: define {{.*}} @test_promotion
+ // CHECK-DAG: [[A_EXT:%.*]] = sext i16 %{{.*}} to i32
+ // CHECK-DAG: [[B_EXT:%.*]] = sext i16 %{{.*}} to i32
+ // CHECK-DAG: [[COND:%.*]] = icmp ne i32 %{{.*}}, 0
+ // CHECK-DAG: [[RESULT:%.*]] = call i32 @llvm.ct.select.i32(i1 [[COND]], i32 [[A_EXT]], i32 [[B_EXT]])
+ // CHECK: ret i32 [[RESULT]]
+ return __builtin_ct_select(cond, (int)a, (int)b);
+}
+
+// Test mixed signedness
+unsigned int test_mixed_signedness(int cond, int a, unsigned int b) {
+ // CHECK-LABEL: define {{.*}} @test_mixed_signedness
+ // CHECK-DAG: [[A_EXT:%.*]] = sext i32 %{{.*}} to i64
+ // CHECK-DAG: [[B_EXT:%.*]] = zext i32 %{{.*}} to i64
+ // CHECK-DAG: [[COND:%.*]] = icmp ne i32 %{{.*}}, 0
+ // CHECK-DAG: [[RESULT:%.*]] = call i64 @llvm.ct.select.i64(i1 [[COND]], i64 [[A_EXT]], i64 [[B_EXT]])
+ // CHECK: [[RESULT_TRUNC:%.*]] = trunc i64 [[RESULT]] to i32
+ // CHECK: ret i32 [[RESULT_TRUNC]]
+ return __builtin_ct_select(cond, (long long)a, (long long)b);
+}
+
+// Test complex expression
+int test_complex_expr_alt(int x, int y) {
+ // CHECK-LABEL: define {{.*}} @test_complex_expr_alt
+ // CHECK-DAG: [[CMP:%.*]] = icmp sgt i32 %{{.*}}, 0
+ // CHECK-DAG: [[ADD:%.*]] = add nsw i32 %{{.*}}, %{{.*}}
+ // CHECK-DAG: [[SUB:%.*]] = sub nsw i32 %{{.*}}, %{{.*}}
+ // Separate the final sequence to ensure proper ordering
+ // CHECK-NEXT: [[RESULT:%.*]] = call i32 @llvm.ct.select.i32(i1 [[CMP]], i32 [[ADD]], i32 [[SUB]])
+ // CHECK-NEXT: ret i32 [[RESULT]]
+ return __builtin_ct_select(x > 0, x + y, x - y);
+}
+
+// Test nested calls
+int test_nested_structured(int cond1, int cond2, int a, int b, int c) {
+ // CHECK-LABEL: define {{.*}} @test_nested_structured
+ // Phase 1: Conditions (order doesn't matter)
+ // CHECK-DAG: [[COND1:%.*]] = icmp ne i32 %{{.*}}, 0
+ // CHECK-DAG: [[COND2:%.*]] = icmp ne i32 %{{.*}}, 0
+
+ // Phase 2: Inner select (must happen before outer)
+ // CHECK: [[INNER:%.*]] = call i32 @llvm.ct.select.i32(i1 [[COND2]], i32 %{{.*}}, i32 %{{.*}})
+
+ // Phase 3: Outer select (must use inner result)
+ // CHECK: [[RESULT:%.*]] = call i32 @llvm.ct.select.i32(i1 [[COND1]], i32 [[INNER]], i32 %{{.*}})
+ // CHECK: ret i32 [[RESULT]]
+ return __builtin_ct_select(cond1, __builtin_ct_select(cond2, a, b), c);
+}
+
+// Test with function calls
+int helper(int x) { return x * 2; }
+int test_function_calls(int cond, int x, int y) {
+ // CHECK-LABEL: define {{.*}} @test_function_calls
+ // CHECK-DAG: [[COND:%.*]] = icmp ne i32 %{{.*}}, 0
+ // CHECK-DAG: [[CALL1:%.*]] = call i32 @helper(i32 noundef %{{.*}})
+ // CHECK-DAG: [[CALL2:%.*]] = call i32 @helper(i32 noundef %{{.*}})
+ // CHECK-DAG: [[RESULT:%.*]] = call i32 @llvm.ct.select.i32(i1 [[COND]], i32 [[CALL1]], i32 [[CALL2]])
+ // CHECK: ret i32 [[RESULT]]
+ return __builtin_ct_select(cond, helper(x), helper(y));
+}
+
+// Test using ct_select as condition for another ct_select
+int test_intrinsic_condition(int cond1, int cond2, int a, int b, int c, int d) {
+ // CHECK-LABEL: define {{.*}} @test_intrinsic_condition
+ // CHECK-DAG: [[COND:%.*]] = icmp ne i32 %{{.*}}, 0
+ // CHECK-DAG: [[INNER_COND:%.*]] = call i32 @llvm.ct.select.i32(i1 [[COND]], i32 %{{.*}}, i32 %{{.*}})
+ // CHECK-DAG: [[FINAL_COND:%.*]] = icmp ne i32 [[INNER_COND]], 0
+ // CHECK-DAG: [[RESULT:%.*]] = call i32 @llvm.ct.select.i32(i1 [[FINAL_COND]], i32 %{{.*}}, i32 %{{.*}})
+ // CHECK: ret i32 [[RESULT]]
+ return __builtin_ct_select(__builtin_ct_select(cond1, cond2, a), b, c);
+}
+
+// Test using comparison result of ct_select as condition
+int test_comparison_condition(int cond, int a, int b, int c, int d) {
+ // CHECK-LABEL: define {{.*}} @test_comparison_condition
+ // CHECK-DAG: [[COND:%.*]] = icmp ne i32 %{{.*}}, 0
+ // CHECK: [[FIRST_SELECT:%.*]] = call i32 @llvm.ct.select.i32(i1 [[COND]], i32 %{{.*}}, i32 %{{.*}})
+ // CHECK: [[CMP:%.*]] = icmp sgt i32 [[FIRST_SELECT]], %{{.*}}
+ // CHECK: [[RESULT:%.*]] = call i32 @llvm.ct.select.i32(i1 [[CMP]], i32 %{{.*}}, i32 %{{.*}})
+ // CHECK: ret i32 [[RESULT]]
+ return __builtin_ct_select(__builtin_ct_select(cond, a, b) > c, d, a);
+}
+
+// Test using ct_select result in arithmetic as condition
+int test_arithmetic_condition(int cond, int a, int b, int c, int d) {
+ // CHECK-LABEL: define {{.*}} @test_arithmetic_condition
+ // CHECK-DAG: [[COND:%.*]] = icmp ne i32 %{{.*}}, 0
+ // CHECK: [[FIRST_SELECT:%.*]] = call i32 @llvm.ct.select.i32(i1 [[COND]], i32 %{{.*}}, i32 %{{.*}})
+ // CHECK: [[ADD:%.*]] = add nsw i32 [[FIRST_SELECT]], %{{.*}}
+ // CHECK: [[FINAL_COND:%.*]] = icmp ne i32 [[ADD]], 0
+ // CHECK: [[RESULT:%.*]] = call i32 @llvm.ct.select.i32(i1 [[FINAL_COND]], i32 %{{.*}}, i32 %{{.*}})
+ // CHECK: ret i32 [[RESULT]]
+ return __builtin_ct_select(__builtin_ct_select(cond, a, b) + c, d, a);
+}
+
+// Test chained ct_select as conditions
+int test_chained_conditions(int cond1, int cond2, int cond3, int a, int b, int c, int d, int e) {
+ // CHECK-LABEL: define {{.*}} @test_chained_conditions
+ // CHECK: [[COND1:%.*]] = icmp ne i32 %{{.*}}, 0
+ // CHECK-DAG: [[FIRST:%.*]] = call i32 @llvm.ct.select.i32(i1 [[COND1]], i32 %{{.*}}, i32 %{{.*}})
+ // CHECK-DAG: [[COND2:%.*]] = icmp ne i32 %{{.*}}, 0
+ // CHECK-DAG: [[SECOND:%.*]] = call i32 @llvm.ct.select.i32(i1 [[COND2]], i32 %{{.*}}, i32 %{{.*}})
+ // CHECK-DAG: [[FINAL_COND:%.*]] = icmp ne i32 %{{.*}}, 0
+ // CHECK-DAG: [[RESULT:%.*]] = call i32 @llvm.ct.select.i32(i1 [[FINAL_COND]], i32 %{{.*}}, i32 %{{.*}})
+ // CHECK: ret i32 [[RESULT]]
+ int first_select = __builtin_ct_select(cond1, a, b);
+ int second_select = __builtin_ct_select(cond2, first_select, c);
+ return __builtin_ct_select(second_select, d, e);
+}
+
+// Test using ct_select with pointer condition
+//int test_pointer_condition(int *ptr1, int *ptr2, int a, int b, int c) {
+ // NO-CHECK-LABEL: define {{.*}} @test_pointer_condition
+ // NO-CHECK: [[PTR_COND:%.*]] = icmp ne ptr %{{.*}}, null
+ // NO-CHECK: [[PTR_SELECT:%.*]] = call ptr @llvm.ct.select.p0(i1 [[PTR_COND]], ptr %{{.*}}, ptr %{{.*}})
+ // NO-CHECK: [[FINAL_COND:%.*]] = icmp ne ptr [[PTR_SELECT]], null
+ // NO-CHECK: [[RESULT:%.*]] = call i32 @llvm.ct.select.i32(i1 [[FINAL_COND]], i32 %{{.*}}, i32 %{{.*}})
+ // NO-CHECK: ret i32 [[RESULT]]
+// return __builtin_ct_select(__builtin_ct_select(ptr1, ptr1, ptr2), a, b);
+//}
+
+
+// Test using ct_select result in logical operations as condition
+int test_logical_condition(int cond1, int cond2, int a, int b, int c, int d) {
+ // CHECK-LABEL: define {{.*}} @test_logical_condition
+ // CHECK-DAG: [[COND1:%.*]] = icmp ne i32 %{{.*}}, 0
+ // CHECK-DAG: [[COND2:%.*]] = icmp ne i32 %{{.*}}, 0
+ // CHECK-DAG: [[FIRST_SELECT:%.*]] = call i32 @llvm.ct.select.i32(i1 [[COND1]], i32 %{{.*}}, i32 %{{.*}})
+ // CHECK-DAG: [[SELECT_BOOL:%.*]] = icmp ne i32 %{{.*}}, 0
+ // CHECK-DAG: [[RESULT:%.*]] = call i32 @llvm.ct.select.i32(i1 %{{.*}}, i32 %{{.*}}, i32 %{{.*}})
+ // CHECK: ret i32 [[RESULT]]
+ return __builtin_ct_select(__builtin_ct_select(cond1, a, b) && cond2, c, d);
+}
+
+// Test multiple levels of ct_select as conditions
+int test_deep_condition_nesting(int cond1, int cond2, int cond3, int a, int b, int c, int d, int e, int f) {
+ // CHECK-LABEL: define {{.*}} @test_deep_condition_nesting
+ // CHECK-DAG: [[COND1:%.*]] = icmp ne i32 %{{.*}}, 0
+ // CHECK-DAG: [[COND2:%.*]] = icmp ne i32 %{{.*}}, 0
+ // CHECK-DAG: [[INNER1:%.*]] = call i32 @llvm.ct.select.i32(i1 [[COND2]], i32 %{{.*}}, i32 %{{.*}})
+ // CHECK-DAG: [[INNER1_COND:%.*]] = icmp ne i32 [[INNER1]], 0
+ // CHECK-DAG: [[INNER2:%.*]] = call i32 @llvm.ct.select.i32(i1 [[INNER1_COND]], i32 %{{.*}}, i32 %{{.*}})
+ // CHECK-DAG: [[OUTER:%.*]] = call i32 @llvm.ct.select.i32(i1 [[COND1]], i32 [[INNER2]], i32 %{{.*}})
+ // CHECK-DAG: [[FINAL_COND:%.*]] = icmp ne i32 [[OUTER]], 0
+ // CHECK-DAG: [[RESULT:%.*]] = call i32 @llvm.ct.select.i32(i1 [[FINAL_COND]], i32 %{{.*}}, i32 %{{.*}})
+ // CHECK: ret i32 [[RESULT]]
+ return __builtin_ct_select(__builtin_ct_select(cond1, __builtin_ct_select(__builtin_ct_select(cond2, a, b), c, d), e), f, a);
+}
+
+// Test ct_select with complex condition expressions
+int test_complex_condition_expr(int x, int y, int z, int a, int b) {
+ // CHECK-LABEL: define {{.*}} @test_complex_condition_expr
+ // CHECK: [[CMP1:%.*]] = icmp sgt i32 %{{.*}}, %{{.*}}
+ // CHECK: [[SELECT1:%.*]] = call i32 @llvm.ct.select.i32(i1 [[CMP1]], i32 %{{.*}}, i32 %{{.*}})
+ // CHECK: [[CMP2:%.*]] = icmp slt i32 [[SELECT1]], %{{.*}}
+ // CHECK: [[RESULT:%.*]] = call i32 @llvm.ct.select.i32(i1 [[CMP2]], i32 %{{.*}}, i32 %{{.*}})
+ // CHECK: ret i32 [[RESULT]]
+ return __builtin_ct_select(__builtin_ct_select(x > y, x, y) < z, a, b);
+}
+
+// Test vector types - 128-bit vectors
+typedef int __attribute__((vector_size(16))) int4;
+typedef float __attribute__((vector_size(16))) float4;
+typedef short __attribute__((vector_size(16))) short8;
+typedef char __attribute__((vector_size(16))) char16;
+
+int4 test_vector_int4(int cond, int4 a, int4 b) {
+ // CHECK-LABEL: define {{.*}} @test_vector_int4
+ // CHECK: [[COND:%.*]] = icmp ne i32 %{{.*}}, 0
+ // CHECK: [[RESULT:%.*]] = call <4 x i32> @llvm.ct.select.v4i32(i1 [[COND]], <4 x i32> %{{.*}}, <4 x i32> %{{.*}})
+ // CHECK: ret <4 x i32> [[RESULT]]
+ return __builtin_ct_select(cond, a, b);
+}
+
+float4 test_vector_float4(int cond, float4 a, float4 b) {
+ // CHECK-LABEL: define {{.*}} @test_vector_float4
+ // CHECK: [[COND:%.*]] = icmp ne i32 %{{.*}}, 0
+ // CHECK: [[RESULT:%.*]] = call <4 x float> @llvm.ct.select.v4f32(i1 [[COND]], <4 x float> %{{.*}}, <4 x float> %{{.*}})
+ // CHECK: ret <4 x float> [[RESULT]]
+ return __builtin_ct_select(cond, a, b);
+}
+
+short8 test_vector_short8(int cond, short8 a, short8 b) {
+ // CHECK-LABEL: define {{.*}} @test_vector_short8
+ // CHECK: [[COND:%.*]] = icmp ne i32 %{{.*}}, 0
+ // CHECK: [[RESULT:%.*]] = call <8 x i16> @llvm.ct.select.v8i16(i1 [[COND]], <8 x i16> %{{.*}}, <8 x i16> %{{.*}})
+ // CHECK: ret <8 x i16> [[RESULT]]
+ return __builtin_ct_select(cond, a, b);
+}
+
+char16 test_vector_char16(int cond, char16 a, char16 b) {
+ // CHECK-LABEL: define {{.*}} @test_vector_char16
+ // CHECK: [[COND:%.*]] = icmp ne i32 %{{.*}}, 0
+ // CHECK: [[RESULT:%.*]] = call <16 x i8> @llvm.ct.select.v16i8(i1 [[COND]], <16 x i8> %{{.*}}, <16 x i8> %{{.*}})
+ // CHECK: ret <16 x i8> [[RESULT]]
+ return __builtin_ct_select(cond, a, b);
+}
+
+// Test 256-bit vectors
+typedef int __attribute__((vector_size(32))) int8;
+typedef float __attribute__((vector_size(32))) float8;
+typedef double __attribute__((vector_size(32))) double4;
+
+int8 test_vector_int8(int cond, int8 a, int8 b) {
+ // CHECK-LABEL: define {{.*}} @test_vector_int8
+ // CHECK-DAG: [[COND:%.*]] = icmp ne i32 %{{.*}}, 0
+ // CHECK-DAG: [[RESULT:%.*]] = call <8 x i32> @llvm.ct.select.v8i32(i1 [[COND]], <8 x i32> %{{.*}}, <8 x i32> %{{.*}})
+ return __builtin_ct_select(cond, a, b);
+}
+
+float8 test_vector_float8(int cond, float8 a, float8 b) {
+ // CHECK-LABEL: define {{.*}} @test_vector_float8
+ // CHECK-DAG: [[COND:%.*]] = icmp ne i32 %{{.*}}, 0
+ // CHECK-DAG: [[RESULT:%.*]] = call <8 x float> @llvm.ct.select.v8f32(i1 [[COND]], <8 x float> %{{.*}}, <8 x float> %{{.*}})
+ return __builtin_ct_select(cond, a, b);
+}
+
+double4 test_vector_double4(int cond, double4 a, double4 b) {
+ // CHECK-LABEL: define {{.*}} @test_vector_double4
+ // CHECK-DAG: [[COND:%.*]] = icmp ne i32 %{{.*}}, 0
+ // CHECK-DAG: [[RESULT:%.*]] = call <4 x double> @llvm.ct.select.v4f64(i1 [[COND]], <4 x double> %{{.*}}, <4 x double> %{{.*}})
+ return __builtin_ct_select(cond, a, b);
+}
+
+// Test 512-bit vectors
+typedef int __attribute__((vector_size(64))) int16;
+typedef float __attribute__((vector_size(64))) float16;
+
+int16 test_vector_int16(int cond, int16 a, int16 b) {
+ // CHECK-LABEL: define {{.*}} @test_vector_int16
+ // CHECK: [[COND:%.*]] = icmp ne i32 %{{.*}}, 0
+ // CHECK: [[RESULT:%.*]] = call <16 x i32> @llvm.ct.select.v16i32(i1 [[COND]], <16 x i32> %{{.*}}, <16 x i32> %{{.*}})
+ return __builtin_ct_select(cond, a, b);
+}
+
+float16 test_vector_float16(int cond, float16 a, float16 b) {
+ // CHECK-LABEL: define {{.*}} @test_vector_float16
+ // CHECK: [[COND:%.*]] = icmp ne i32 %{{.*}}, 0
+ // CHECK: [[RESULT:%.*]] = call <16 x float> @llvm.ct.select.v16f32(i1 [[COND]], <16 x float> %{{.*}}, <16 x float> %{{.*}})
+ return __builtin_ct_select(cond, a, b);
+}
+
+// Test vector operations with different condition types
+int4 test_vector_char_cond(char cond, int4 a, int4 b) {
+ // CHECK-LABEL: define {{.*}} @test_vector_char_cond
+ // CHECK: [[COND:%.*]] = icmp ne i8 %{{.*}}, 0
+ // CHECK: [[RESULT:%.*]] = call <4 x i32> @llvm.ct.select.v4i32(i1 [[COND]], <4 x i32> %{{.*}}, <4 x i32> %{{.*}})
+ // CHECK: ret <4 x i32> [[RESULT]]
+ return __builtin_ct_select(cond, a, b);
+}
+
+float4 test_vector_long_cond(long long cond, float4 a, float4 b) {
+ // CHECK-LABEL: define {{.*}} @test_vector_long_cond
+ // CHECK: [[COND:%.*]] = icmp ne i64 %{{.*}}, 0
+ // CHECK: [[RESULT:%.*]] = call <4 x float> @llvm.ct.select.v4f32(i1 [[COND]], <4 x float> %{{.*}}, <4 x float> %{{.*}})
+ // CHECK: ret <4 x float> [[RESULT]]
+ return __builtin_ct_select(cond, a, b);
+}
+
+// Test vector constants
+int4 test_vector_constant_cond(void) {
+ // CHECK-LABEL: define {{.*}} @test_vector_constant_cond
+ // CHECK: [[RESULT:%.*]] = call <4 x i32> @llvm.ct.select.v4i32(i1 true, <4 x i32> %{{.*}}, <4 x i32> %{{.*}})
+ // CHECK: ret <4 x i32> [[RESULT]]
+ int4 a = {1, 2, 3, 4};
+ int4 b = {5, 6, 7, 8};
+ return __builtin_ct_select(1, a, b);
+}
+
+float4 test_vector_zero_cond(void) {
+ // CHECK-LABEL: define {{.*}} @test_vector_zero_cond
+ // CHECK: [[RESULT:%.*]] = call <4 x float> @llvm.ct.select.v4f32(i1 false, <4 x float> %{{.*}}, <4 x float> %{{.*}})
+ // CHECK: ret <4 x float> [[RESULT]]
+ float4 a = {1.0f, 2.0f, 3.0f, 4.0f};
+ float4 b = {5.0f, 6.0f, 7.0f, 8.0f};
+ return __builtin_ct_select(0, a, b);
+}
+
+// Test nested vector selections
+int4 test_vector_nested(int cond1, int cond2, int4 a, int4 b, int4 c) {
+ // CHECK-LABEL: define {{.*}} @test_vector_nested
+ // CHECK-DAG: [[COND1:%.*]] = icmp ne i32 %{{.*}}, 0
+ // CHECK-DAG: [[COND2:%.*]] = icmp ne i32 %{{.*}}, 0
+ // CHECK: [[INNER:%.*]] = call <4 x i32> @llvm.ct.select.v4i32(i1 [[COND2]], <4 x i32> %{{.*}}, <4 x i32> %{{.*}})
+ // CHECK: [[RESULT:%.*]] = call <4 x i32> @llvm.ct.select.v4i32(i1 [[COND1]], <4 x i32> [[INNER]], <4 x i32> %{{.*}})
+ // CHECK: ret <4 x i32> [[RESULT]]
+ return __builtin_ct_select(cond1, __builtin_ct_select(cond2, a, b), c);
+}
+
+// Test vector selection with complex expressions
+float4 test_vector_complex_expr(int x, int y, float4 a, float4 b) {
+ // CHECK-LABEL: define {{.*}} @test_vector_complex_expr
+ // CHECK: [[CMP:%.*]] = icmp sgt i32 %{{.*}}, %{{.*}}
+ // CHECK: [[RESULT:%.*]] = call <4 x float> @llvm.ct.select.v4f32(i1 [[CMP]], <4 x float> %{{.*}}, <4 x float> %{{.*}})
+ // CHECK: ret <4 x float> [[RESULT]]
+ return __builtin_ct_select(x > y, a, b);
+}
+
+// Test vector with different element sizes
+typedef long long __attribute__((vector_size(16))) long2;
+typedef double __attribute__((vector_size(16))) double2;
+
+long2 test_vector_long2(int cond, long2 a, long2 b) {
+ // CHECK-LABEL: define {{.*}} @test_vector_long2
+ // CHECK: [[COND:%.*]] = icmp ne i32 %{{.*}}, 0
+ // CHECK: [[RESULT:%.*]] = call <2 x i64> @llvm.ct.select.v2i64(i1 [[COND]], <2 x i64> %{{.*}}, <2 x i64> %{{.*}})
+ // CHECK: ret <2 x i64> [[RESULT]]
+ return __builtin_ct_select(cond, a, b);
+}
+
+double2 test_vector_double2(int cond, double2 a, double2 b) {
+ // CHECK-LABEL: define {{.*}} @test_vector_double2
+ // CHECK: [[COND:%.*]] = icmp ne i32 %{{.*}}, 0
+ // CHECK: [[RESULT:%.*]] = call <2 x double> @llvm.ct.select.v2f64(i1 [[COND]], <2 x double> %{{.*}}, <2 x double> %{{.*}})
+ // CHECK: ret <2 x double> [[RESULT]]
+ return __builtin_ct_select(cond, a, b);
+}
+
+// Test mixed vector operations
+int4 test_vector_from_scalar_condition(int4 vec_cond, int4 a, int4 b) {
+ // CHECK-LABEL: define {{.*}} @test_vector_from_scalar_condition
+ // Extract first element and use as condition
+ int scalar_cond = vec_cond[0];
+ // CHECK: [[COND:%.*]] = icmp ne i32 %{{.*}}, 0
+ // CHECK: [[RESULT:%.*]] = call <4 x i32> @llvm.ct.select.v4i32(i1 [[COND]], <4 x i32> %{{.*}}, <4 x i32> %{{.*}})
+ // CHECK: ret <4 x i32> [[RESULT]]
+ return __builtin_ct_select(scalar_cond, a, b);
+}
+
+// Test vector chaining
+float4 test_vector_chaining(int cond1, int cond2, int cond3, float4 a, float4 b, float4 c, float4 d) {
+ // CHECK-LABEL: define {{.*}} @test_vector_chaining
+ // CHECK-DAG: [[COND1:%.*]] = icmp ne i32 %{{.*}}, 0
+ // CHECK-DAG: [[COND2:%.*]] = icmp ne i32 %{{.*}}, 0
+ // CHECK-DAG: [[COND3:%.*]] = icmp ne i32 %{{.*}}, 0
+ // CHECK-DAG: [[FIRST:%.*]] = call <4 x float> @llvm.ct.select.v4f32(i1 [[COND1]], <4 x float> %{{.*}}, <4 x float> %{{.*}})
+ // CHECK-DAG: [[SECOND:%.*]] = call <4 x float> @llvm.ct.select.v4f32(i1 [[COND2]], <4 x float> %{{.*}}, <4 x float> %{{.*}})
+ // CHECK-DAG: [[RESULT:%.*]] = call <4 x float> @llvm.ct.select.v4f32(i1 [[COND3]], <4 x float> %{{.*}}, <4 x float> %{{.*}})
+ // CHECK: ret <4 x float> [[RESULT]]
+ float4 first = __builtin_ct_select(cond1, a, b);
+ float4 second = __builtin_ct_select(cond2, first, c);
+ return __builtin_ct_select(cond3, second, d);
+}
+
+// Test special floating point values - NaN
+float test_nan_operands(int cond) {
+ // CHECK-LABEL: define {{.*}} @test_nan_operands
+ // CHECK-DAG: [[COND:%.*]] = icmp ne i32 %{{.*}}, 0
+ // CHECK-DAG: [[RESULT:%.*]] = call float @llvm.ct.select.f32(i1 [[COND]], float %{{.*}}, float 1.000000e+00)
+ // CHECK: ret float [[RESULT]]
+ float nan_val = __builtin_nanf("");
+ return __builtin_ct_select(cond, nan_val, 1.0f);
+}
+
+double test_nan_double_operands(int cond) {
+ // CHECK-LABEL: define {{.*}} @test_nan_double_operands
+ // CHECK-DAG: [[COND:%.*]] = icmp ne i32 %{{.*}}, 0
+ // CHECK-DAG: [[RESULT:%.*]] = call double @llvm.ct.select.f64(i1 [[COND]], double %{{.*}}, double 2.000000e+00)
+ // CHECK: ret double [[RESULT]]
+ double nan_val = __builtin_nan("");
+ return __builtin_ct_select(cond, nan_val, 2.0);
+}
+
+// Test infinity values
+float test_infinity_operands(int cond) {
+ // CHECK-LABEL: define {{.*}} @test_infinity_operands
+ // CHECK-DAG: [[COND:%.*]] = icmp ne i32 %{{.*}}, 0
+ // CHECK-DAG: [[RESULT:%.*]] = call float @llvm.ct.select.f32(i1 [[COND]], float %{{.*}}, float %{{.*}})
+ // CHECK: ret float [[RESULT]]
+ float pos_inf = __builtin_inff();
+ float neg_inf = -__builtin_inff();
+ return __builtin_ct_select(cond, pos_inf, neg_inf);
+}
+
+double test_infinity_double_operands(int cond) {
+ // CHECK-LABEL: define {{.*}} @test_infinity_double_operands
+ // CHECK-DAG: [[COND:%.*]] = icmp ne i32 %{{.*}}, 0
+ // CHECK-DAG: [[RESULT:%.*]] = call double @llvm.ct.select.f64(i1 [[COND]], double %{{.*}}, double %{{.*}})
+ // CHECK: ret double [[RESULT]]
+ double pos_inf = __builtin_inf();
+ double neg_inf = -__builtin_inf();
+ return __builtin_ct_select(cond, pos_inf, neg_inf);
+}
+
+// Test subnormal/denormal values
+float test_subnormal_operands(int cond) {
+ // CHECK-LABEL: define {{.*}} @test_subnormal_operands
+ // CHECK-DAG: [[COND:%.*]] = icmp ne i32 %{{.*}}, 0
+ // CHECK-DAG: [[RESULT:%.*]] = call float @llvm.ct.select.f32(i1 [[COND]], float %{{.*}}, float %{{.*}})
+ // CHECK: ret float [[RESULT]]
+ // Very small subnormal values
+ float subnormal1 = 1e-40f;
+ float subnormal2 = 1e-45f;
+ return __builtin_ct_select(cond, subnormal1, subnormal2);
+}
+
+// Test integer overflow boundaries
+int test_integer_overflow_operands(int cond) {
+ // CHECK-LABEL: define {{.*}} @test_integer_overflow_operands
+ // CHECK-DAG: [[COND:%.*]] = icmp ne i32 %{{.*}}, 0
+ // CHECK-DAG: [[RESULT:%.*]] = call i32 @llvm.ct.select.i32(i1 [[COND]], i32 %{{.*}}, i32 %{{.*}})
+ // CHECK: ret i32 [[RESULT]]
+ int max_int = __INT_MAX__;
+ int min_int = (-__INT_MAX__ - 1);
+ return __builtin_ct_select(cond, max_int, min_int);
+}
+
+long long test_longlong_overflow_operands(int cond) {
+ // CHECK-LABEL: define {{.*}} @test_longlong_overflow_operands
+ // CHECK-DAG: [[COND:%.*]] = icmp ne i32 %{{.*}}, 0
+ // CHECK-DAG: [[RESULT:%.*]] = call i64 @llvm.ct.select.i64(i1 [[COND]], i64 %{{.*}}, i64 %{{.*}})
+ // CHECK: ret i64 [[RESULT]]
+ long long max_ll = __LONG_LONG_MAX__;
+ long long min_ll = (-__LONG_LONG_MAX__ - 1);
+ return __builtin_ct_select(cond, max_ll, min_ll);
+}
+
+// Test unsigned overflow boundaries
+unsigned int test_unsigned_overflow_operands(int cond) {
+ // CHECK-LABEL: define {{.*}} @test_unsigned_overflow_operands
+ // CHECK-DAG: [[COND:%.*]] = icmp ne i32 %{{.*}}, 0
+ // CHECK-DAG: [[RESULT:%.*]] = call i32 @llvm.ct.select.i32(i1 [[COND]], i32 %{{.*}}, i32 %{{.*}})
+ // CHECK: ret i32 [[RESULT]]
+ unsigned int max_uint = 4294967295;
+ unsigned int min_uint = 0;
+ return __builtin_ct_select(cond, max_uint, min_uint);
+}
+
+// Test null pointer dereference avoidance
+int* test_null_pointer_operands(int cond, int* valid_ptr) {
+ // CHECK: [[COND:%.*]] = icmp ne i32 %{{.*}}, 0
+ // CHECK: [[RESULT:%.*]] = call ptr @llvm.ct.select.p0(i1 [[COND]], ptr %{{.*}}, ptr %{{.*}})
+ // CHECK: ret ptr [[RESULT]]
+ int* null_ptr = (int*)0;
+ return __builtin_ct_select(cond, null_ptr, valid_ptr);
+}
+
+// Test volatile operations
+volatile int global_volatile = 42;
+int test_volatile_operands(int cond) {
+ // CHECK-LABEL: define {{.*}} @test_volatile_operands
+ // CHECK-DAG: [[VOLATILE_LOAD:%.*]] = load volatile i32, ptr {{.*}}
+ // CHECK-DAG: [[COND:%.*]] = icmp ne i32 %{{.*}}, 0
+ // CHECK-DAG: [[RESULT:%.*]] = call i32 @llvm.ct.select.i32(i1 [[COND]], i32 %{{.*}}, i32 100)
+ // CHECK: ret i32 [[RESULT]]
+ volatile int vol_val = global_volatile;
+ return __builtin_ct_select(cond, vol_val, 100);
+}
+
+// Test uninitialized variable behavior (should still work with ct_select)
+int test_uninitialized_operands(int cond, int initialized) {
+ // CHECK-LABEL: define {{.*}} @test_uninitialized_operands
+ // CHECK: [[COND:%.*]] = icmp ne i32 %{{.*}}, 0
+ // CHECK: [[RESULT:%.*]] = call i32 @llvm.ct.select.i32(i1 [[COND]], i32 %{{.*}}, i32 %{{.*}})
+ // CHECK: ret i32 [[RESULT]]
+ int uninitialized; // Intentionally uninitialized
+ return __builtin_ct_select(cond, uninitialized, initialized);
+}
+
+// Test zero division avoidance patterns
+int test_division_by_zero_avoidance(int cond, int dividend, int divisor) {
+ // CHECK-LABEL: define {{.*}} @test_division_by_zero_avoidance
+ // CHECK-DAG: [[COND:%.*]] = icmp ne i32 %{{.*}}, 0
+ // CHECK-DAG: [[DIV_RESULT:%.*]] = sdiv i32 %{{.*}}, %{{.*}}
+ // CHECK-DAG: [[SAFE_DIVISOR:%.*]] = call i32 @llvm.ct.select.i32(i1 [[COND]], i32 %{{.*}}, i32 1)
+ // First get a safe divisor (never zero)
+ int safe_divisor = __builtin_ct_select(divisor != 0, divisor, 1);
+ // Then perform division with guaranteed non-zero divisor
+ return dividend / safe_divisor;
+}
+
+// Test array bounds checking patterns
+int test_array_bounds_protection(int cond, int index, int* array) {
+ // CHECK-LABEL: define {{.*}} @test_array_bounds_protection
+ // CHECK-DAG: [[SAFE_INDEX:%.*]] = call i32 @llvm.ct.select.i32(i1 {{.*}}, i32 %{{.*}}, i32 0)
+ // Use ct_select to ensure safe array indexing
+ int safe_index = __builtin_ct_select(index >= 0 && index < 10, index, 0);
+ return array[safe_index];
+}
+
+// Test bit manipulation edge cases
+unsigned int test_bit_manipulation_edge_cases(int cond, unsigned int value) {
+ // CHECK-LABEL: define {{.*}} @test_bit_manipulation_edge_cases
+ // CHECK-DAG: [[COND:%.*]] = icmp ne i32 %{{.*}}, 0
+ // CHECK-DAG: [[SHIFT_LEFT:%.*]] = shl i32 %{{.*}}, 31
+ // CHECK-DAG: [[SHIFT_RIGHT:%.*]] = lshr i32 %{{.*}}, 31
+ // CHECK-DAG: [[RESULT:%.*]] = call i32 @llvm.ct.select.i32(i1 [[COND]], i32 %{{.*}}, i32 %{{.*}})
+ // CHECK: ret i32 [[RESULT]]
+ // Test extreme bit shifts that could cause undefined behavior
+ unsigned int left_shift = value << 31; // Could overflow
+ unsigned int right_shift = value >> 31; // Extract sign bit
+ return __builtin_ct_select(cond, left_shift, right_shift);
+}
+
+// Test signed integer wraparound
+int test_signed_wraparound(int cond, int a, int b) {
+ // CHECK-LABEL: define {{.*}} @test_signed_wraparound
+ // CHECK-DAG: [[COND:%.*]] = icmp ne i32 %{{.*}}, 0
+ // CHECK-DAG: [[ADD:%.*]] = add nsw i32 %{{.*}}, %{{.*}}
+ // CHECK-DAG: [[SUB:%.*]] = sub nsw i32 %{{.*}}, %{{.*}}
+ // CHECK-DAG: [[RESULT:%.*]] = call i32 @llvm.ct.select.i32(i1 [[COND]], i32 %{{.*}}, i32 %{{.*}})
+ // CHECK: ret i32 [[RESULT]]
+ int sum = a + b; // Could overflow
+ int diff = a - b; // Could underflow
+ return __builtin_ct_select(cond, sum, diff);
+}
+
+// Test vector NaN handling
+float4 test_vector_nan_operands(int cond) {
+ // CHECK-LABEL: define {{.*}} @test_vector_nan_operands
+ // CHECK: [[COND:%.*]] = icmp ne i32 %{{.*}}, 0
+ // CHECK: [[RESULT:%.*]] = call <4 x float> @llvm.ct.select.v4f32(i1 [[COND]], <4 x float> %{{.*}}, <4 x float> %{{.*}})
+ // CHECK: ret <4 x float> [[RESULT]]
+ float nan_val = __builtin_nanf("");
+ float4 nan_vec = {nan_val, nan_val, nan_val, nan_val};
+ float4 normal_vec = {1.0f, 2.0f, 3.0f, 4.0f};
+ return __builtin_ct_select(cond, nan_vec, normal_vec);
+}
+
+// Test vector infinity handling
+float4 test_vector_infinity_operands(int cond) {
+ // CHECK-LABEL: define {{.*}} @test_vector_infinity_operands
+ // CHECK: [[COND:%.*]] = icmp ne i32 %{{.*}}, 0
+ // CHECK: [[RESULT:%.*]] = call <4 x float> @llvm.ct.select.v4f32(i1 [[COND]], <4 x float> %{{.*}}, <4 x float> %{{.*}})
+ // CHECK: ret <4 x float> [[RESULT]]
+ float pos_inf = __builtin_inff();
+ float neg_inf = -__builtin_inff();
+ float4 inf_vec = {pos_inf, neg_inf, pos_inf, neg_inf};
+ float4 zero_vec = {0.0f, 0.0f, 0.0f, 0.0f};
+ return __builtin_ct_select(cond, inf_vec, zero_vec);
+}
+
+// Test mixed special values
+double test_mixed_special_values(int cond) {
+ // CHECK-LABEL: define {{.*}} @test_mixed_special_values
+ // CHECK: [[COND:%.*]] = icmp ne i32 %{{.*}}, 0
+ // CHECK: [[RESULT:%.*]] = call double @llvm.ct.select.f64(i1 [[COND]], double %{{.*}}, double %{{.*}})
+ // CHECK: ret double [[RESULT]]
+ double nan_val = __builtin_nan("");
+ double inf_val = __builtin_inf();
+ return __builtin_ct_select(cond, nan_val, inf_val);
+}
+
+// Test constant-time memory access pattern
+int test_constant_time_memory_access(int secret_index, int* data_array) {
+ // CHECK-LABEL: define {{.*}} @test_constant_time_memory_access
+ // This pattern ensures constant-time memory access regardless of secret_index value
+ int result = 0;
+ // Use ct_select to accumulate values without revealing the secret index
+ for (int i = 0; i < 8; i++) {
+ int is_target = (i == secret_index);
+ int current_value = data_array[i];
+ int selected_value = __builtin_ct_select(is_target, current_value, 0);
+ result += selected_value;
+ }
+ return result;
+}
+
+// Test timing-attack resistant comparison
+int test_timing_resistant_comparison(const char* secret, const char* guess) {
+ // CHECK-LABEL: define {{.*}} @test_timing_resistant_comparison
+ // Constant-time string comparison using ct_select
+ int match = 1;
+ for (int i = 0; i < 32; i++) {
+ int chars_equal = (secret[i] == guess[i]);
+ int both_null = (secret[i] == 0) && (guess[i] == 0);
+ int still_matching = __builtin_ct_select(chars_equal || both_null, match, 0);
+ match = __builtin_ct_select(both_null, match, still_matching);
+ }
+ return match;
+}
>From 036021ef7cd318ed16e7ee807254bcb807088539 Mon Sep 17 00:00:00 2001
From: wizardengineer <juliuswoosebert at gmail.com>
Date: Wed, 5 Nov 2025 11:03:23 -0500
Subject: [PATCH 2/4] [ConstantTime][WebAssembly] Add comprehensive tests for
ct.select
---
.../ctselect-fallback-edge-cases.ll | 376 +++++++++
.../WebAssembly/ctselect-fallback-patterns.ll | 641 ++++++++++++++++
.../WebAssembly/ctselect-fallback-vector.ll | 714 ++++++++++++++++++
.../CodeGen/WebAssembly/ctselect-fallback.ll | 552 ++++++++++++++
.../WebAssembly/ctselect-side-effects.ll | 226 ++++++
5 files changed, 2509 insertions(+)
create mode 100644 llvm/test/CodeGen/WebAssembly/ctselect-fallback-edge-cases.ll
create mode 100644 llvm/test/CodeGen/WebAssembly/ctselect-fallback-patterns.ll
create mode 100644 llvm/test/CodeGen/WebAssembly/ctselect-fallback-vector.ll
create mode 100644 llvm/test/CodeGen/WebAssembly/ctselect-fallback.ll
create mode 100644 llvm/test/CodeGen/WebAssembly/ctselect-side-effects.ll
diff --git a/llvm/test/CodeGen/WebAssembly/ctselect-fallback-edge-cases.ll b/llvm/test/CodeGen/WebAssembly/ctselect-fallback-edge-cases.ll
new file mode 100644
index 0000000000000..b0f7f2807debd
--- /dev/null
+++ b/llvm/test/CodeGen/WebAssembly/ctselect-fallback-edge-cases.ll
@@ -0,0 +1,376 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 5
+; RUN: llc < %s -mtriple=wasm32-unknown-unknown -O3 -filetype=asm | FileCheck %s --check-prefix=W32
+; RUN: llc < %s -mtriple=wasm64-unknown-unknown -O3 -filetype=asm | FileCheck %s --check-prefix=W64
+
+; Test with small integer types
+define i1 @test_ctselect_i1(i1 %cond, i1 %a, i1 %b) {
+; W32-LABEL: test_ctselect_i1:
+; W32: .functype test_ctselect_i1 (i32, i32, i32) -> (i32)
+; W32-NEXT: # %bb.0:
+; W32-NEXT: local.get 0
+; W32-NEXT: local.get 1
+; W32-NEXT: i32.and
+; W32-NEXT: local.get 0
+; W32-NEXT: i32.const 1
+; W32-NEXT: i32.xor
+; W32-NEXT: local.get 2
+; W32-NEXT: i32.and
+; W32-NEXT: i32.or
+; W32-NEXT: # fallthrough-return
+;
+; W64-LABEL: test_ctselect_i1:
+; W64: .functype test_ctselect_i1 (i32, i32, i32) -> (i32)
+; W64-NEXT: # %bb.0:
+; W64-NEXT: local.get 0
+; W64-NEXT: local.get 1
+; W64-NEXT: i32.and
+; W64-NEXT: local.get 0
+; W64-NEXT: i32.const 1
+; W64-NEXT: i32.xor
+; W64-NEXT: local.get 2
+; W64-NEXT: i32.and
+; W64-NEXT: i32.or
+; W64-NEXT: # fallthrough-return
+ %result = call i1 @llvm.ct.select.i1(i1 %cond, i1 %a, i1 %b)
+ ret i1 %result
+}
+
+; Test with extremal values
+define i32 @test_ctselect_extremal_values(i1 %cond) {
+; W32-LABEL: test_ctselect_extremal_values:
+; W32: .functype test_ctselect_extremal_values (i32) -> (i32)
+; W32-NEXT: # %bb.0:
+; W32-NEXT: i32.const 0
+; W32-NEXT: local.get 0
+; W32-NEXT: i32.const 1
+; W32-NEXT: i32.and
+; W32-NEXT: local.tee 0
+; W32-NEXT: i32.sub
+; W32-NEXT: i32.const 2147483647
+; W32-NEXT: i32.and
+; W32-NEXT: local.get 0
+; W32-NEXT: i32.const -1
+; W32-NEXT: i32.add
+; W32-NEXT: i32.const -2147483648
+; W32-NEXT: i32.and
+; W32-NEXT: i32.or
+; W32-NEXT: # fallthrough-return
+;
+; W64-LABEL: test_ctselect_extremal_values:
+; W64: .functype test_ctselect_extremal_values (i32) -> (i32)
+; W64-NEXT: # %bb.0:
+; W64-NEXT: i32.const 0
+; W64-NEXT: local.get 0
+; W64-NEXT: i32.const 1
+; W64-NEXT: i32.and
+; W64-NEXT: local.tee 0
+; W64-NEXT: i32.sub
+; W64-NEXT: i32.const 2147483647
+; W64-NEXT: i32.and
+; W64-NEXT: local.get 0
+; W64-NEXT: i32.const -1
+; W64-NEXT: i32.add
+; W64-NEXT: i32.const -2147483648
+; W64-NEXT: i32.and
+; W64-NEXT: i32.or
+; W64-NEXT: # fallthrough-return
+ %result = call i32 @llvm.ct.select.i32(i1 %cond, i32 2147483647, i32 -2147483648)
+ ret i32 %result
+}
+
+; Test with null pointers
+define ptr @test_ctselect_null_ptr(i1 %cond, ptr %ptr) {
+; W32-LABEL: test_ctselect_null_ptr:
+; W32: .functype test_ctselect_null_ptr (i32, i32) -> (i32)
+; W32-NEXT: # %bb.0:
+; W32-NEXT: i32.const 0
+; W32-NEXT: local.get 0
+; W32-NEXT: i32.const 1
+; W32-NEXT: i32.and
+; W32-NEXT: i32.sub
+; W32-NEXT: local.get 1
+; W32-NEXT: i32.and
+; W32-NEXT: # fallthrough-return
+;
+; W64-LABEL: test_ctselect_null_ptr:
+; W64: .functype test_ctselect_null_ptr (i32, i64) -> (i64)
+; W64-NEXT: # %bb.0:
+; W64-NEXT: i64.const 0
+; W64-NEXT: local.get 0
+; W64-NEXT: i64.extend_i32_u
+; W64-NEXT: i64.const 1
+; W64-NEXT: i64.and
+; W64-NEXT: i64.sub
+; W64-NEXT: local.get 1
+; W64-NEXT: i64.and
+; W64-NEXT: # fallthrough-return
+ %result = call ptr @llvm.ct.select.p0(i1 %cond, ptr %ptr, ptr null)
+ ret ptr %result
+}
+
+; Test with function pointers
+define ptr @test_ctselect_function_ptr(i1 %cond, ptr %func1, ptr %func2) {
+; W32-LABEL: test_ctselect_function_ptr:
+; W32: .functype test_ctselect_function_ptr (i32, i32, i32) -> (i32)
+; W32-NEXT: # %bb.0:
+; W32-NEXT: i32.const 0
+; W32-NEXT: local.get 0
+; W32-NEXT: i32.const 1
+; W32-NEXT: i32.and
+; W32-NEXT: local.tee 0
+; W32-NEXT: i32.sub
+; W32-NEXT: local.get 1
+; W32-NEXT: i32.and
+; W32-NEXT: local.get 0
+; W32-NEXT: i32.const -1
+; W32-NEXT: i32.add
+; W32-NEXT: local.get 2
+; W32-NEXT: i32.and
+; W32-NEXT: i32.or
+; W32-NEXT: # fallthrough-return
+;
+; W64-LABEL: test_ctselect_function_ptr:
+; W64: .functype test_ctselect_function_ptr (i32, i64, i64) -> (i64)
+; W64-NEXT: .local i64
+; W64-NEXT: # %bb.0:
+; W64-NEXT: i64.const 0
+; W64-NEXT: local.get 0
+; W64-NEXT: i64.extend_i32_u
+; W64-NEXT: i64.const 1
+; W64-NEXT: i64.and
+; W64-NEXT: local.tee 3
+; W64-NEXT: i64.sub
+; W64-NEXT: local.get 1
+; W64-NEXT: i64.and
+; W64-NEXT: local.get 3
+; W64-NEXT: i64.const -1
+; W64-NEXT: i64.add
+; W64-NEXT: local.get 2
+; W64-NEXT: i64.and
+; W64-NEXT: i64.or
+; W64-NEXT: # fallthrough-return
+ %result = call ptr @llvm.ct.select.p0(i1 %cond, ptr %func1, ptr %func2)
+ ret ptr %result
+}
+
+; Test with condition from icmp on pointers
+define ptr @test_ctselect_ptr_cmp(ptr %p1, ptr %p2, ptr %a, ptr %b) {
+; W32-LABEL: test_ctselect_ptr_cmp:
+; W32: .functype test_ctselect_ptr_cmp (i32, i32, i32, i32) -> (i32)
+; W32-NEXT: # %bb.0:
+; W32-NEXT: i32.const -1
+; W32-NEXT: i32.const 0
+; W32-NEXT: local.get 0
+; W32-NEXT: local.get 1
+; W32-NEXT: i32.eq
+; W32-NEXT: i32.select
+; W32-NEXT: local.tee 1
+; W32-NEXT: local.get 2
+; W32-NEXT: i32.and
+; W32-NEXT: local.get 1
+; W32-NEXT: i32.const -1
+; W32-NEXT: i32.xor
+; W32-NEXT: local.get 3
+; W32-NEXT: i32.and
+; W32-NEXT: i32.or
+; W32-NEXT: # fallthrough-return
+;
+; W64-LABEL: test_ctselect_ptr_cmp:
+; W64: .functype test_ctselect_ptr_cmp (i64, i64, i64, i64) -> (i64)
+; W64-NEXT: # %bb.0:
+; W64-NEXT: i64.const -1
+; W64-NEXT: i64.const 0
+; W64-NEXT: local.get 0
+; W64-NEXT: local.get 1
+; W64-NEXT: i64.eq
+; W64-NEXT: i64.select
+; W64-NEXT: local.tee 1
+; W64-NEXT: local.get 2
+; W64-NEXT: i64.and
+; W64-NEXT: local.get 1
+; W64-NEXT: i64.const -1
+; W64-NEXT: i64.xor
+; W64-NEXT: local.get 3
+; W64-NEXT: i64.and
+; W64-NEXT: i64.or
+; W64-NEXT: # fallthrough-return
+ %cmp = icmp eq ptr %p1, %p2
+ %result = call ptr @llvm.ct.select.p0(i1 %cmp, ptr %a, ptr %b)
+ ret ptr %result
+}
+
+; Test with struct pointer types
+%struct.pair = type { i32, i32 }
+
+define ptr @test_ctselect_struct_ptr(i1 %cond, ptr %a, ptr %b) {
+; W32-LABEL: test_ctselect_struct_ptr:
+; W32: .functype test_ctselect_struct_ptr (i32, i32, i32) -> (i32)
+; W32-NEXT: # %bb.0:
+; W32-NEXT: i32.const 0
+; W32-NEXT: local.get 0
+; W32-NEXT: i32.const 1
+; W32-NEXT: i32.and
+; W32-NEXT: local.tee 0
+; W32-NEXT: i32.sub
+; W32-NEXT: local.get 1
+; W32-NEXT: i32.and
+; W32-NEXT: local.get 0
+; W32-NEXT: i32.const -1
+; W32-NEXT: i32.add
+; W32-NEXT: local.get 2
+; W32-NEXT: i32.and
+; W32-NEXT: i32.or
+; W32-NEXT: # fallthrough-return
+;
+; W64-LABEL: test_ctselect_struct_ptr:
+; W64: .functype test_ctselect_struct_ptr (i32, i64, i64) -> (i64)
+; W64-NEXT: .local i64
+; W64-NEXT: # %bb.0:
+; W64-NEXT: i64.const 0
+; W64-NEXT: local.get 0
+; W64-NEXT: i64.extend_i32_u
+; W64-NEXT: i64.const 1
+; W64-NEXT: i64.and
+; W64-NEXT: local.tee 3
+; W64-NEXT: i64.sub
+; W64-NEXT: local.get 1
+; W64-NEXT: i64.and
+; W64-NEXT: local.get 3
+; W64-NEXT: i64.const -1
+; W64-NEXT: i64.add
+; W64-NEXT: local.get 2
+; W64-NEXT: i64.and
+; W64-NEXT: i64.or
+; W64-NEXT: # fallthrough-return
+ %result = call ptr @llvm.ct.select.p0(i1 %cond, ptr %a, ptr %b)
+ ret ptr %result
+}
+
+; Test with deeply nested conditions
+define i32 @test_ctselect_deeply_nested(i1 %c1, i1 %c2, i1 %c3, i1 %c4, i32 %a, i32 %b, i32 %c, i32 %d, i32 %e) {
+; W32-LABEL: test_ctselect_deeply_nested:
+; W32: .functype test_ctselect_deeply_nested (i32, i32, i32, i32, i32, i32, i32, i32, i32) -> (i32)
+; W32-NEXT: # %bb.0:
+; W32-NEXT: i32.const 0
+; W32-NEXT: local.get 3
+; W32-NEXT: i32.const 1
+; W32-NEXT: i32.and
+; W32-NEXT: local.tee 3
+; W32-NEXT: i32.sub
+; W32-NEXT: i32.const 0
+; W32-NEXT: local.get 2
+; W32-NEXT: i32.const 1
+; W32-NEXT: i32.and
+; W32-NEXT: local.tee 2
+; W32-NEXT: i32.sub
+; W32-NEXT: i32.const 0
+; W32-NEXT: local.get 1
+; W32-NEXT: i32.const 1
+; W32-NEXT: i32.and
+; W32-NEXT: local.tee 1
+; W32-NEXT: i32.sub
+; W32-NEXT: i32.const 0
+; W32-NEXT: local.get 0
+; W32-NEXT: i32.const 1
+; W32-NEXT: i32.and
+; W32-NEXT: local.tee 0
+; W32-NEXT: i32.sub
+; W32-NEXT: local.get 4
+; W32-NEXT: i32.and
+; W32-NEXT: local.get 0
+; W32-NEXT: i32.const -1
+; W32-NEXT: i32.add
+; W32-NEXT: local.get 5
+; W32-NEXT: i32.and
+; W32-NEXT: i32.or
+; W32-NEXT: i32.and
+; W32-NEXT: local.get 1
+; W32-NEXT: i32.const -1
+; W32-NEXT: i32.add
+; W32-NEXT: local.get 6
+; W32-NEXT: i32.and
+; W32-NEXT: i32.or
+; W32-NEXT: i32.and
+; W32-NEXT: local.get 2
+; W32-NEXT: i32.const -1
+; W32-NEXT: i32.add
+; W32-NEXT: local.get 7
+; W32-NEXT: i32.and
+; W32-NEXT: i32.or
+; W32-NEXT: i32.and
+; W32-NEXT: local.get 3
+; W32-NEXT: i32.const -1
+; W32-NEXT: i32.add
+; W32-NEXT: local.get 8
+; W32-NEXT: i32.and
+; W32-NEXT: i32.or
+; W32-NEXT: # fallthrough-return
+;
+; W64-LABEL: test_ctselect_deeply_nested:
+; W64: .functype test_ctselect_deeply_nested (i32, i32, i32, i32, i32, i32, i32, i32, i32) -> (i32)
+; W64-NEXT: # %bb.0:
+; W64-NEXT: i32.const 0
+; W64-NEXT: local.get 3
+; W64-NEXT: i32.const 1
+; W64-NEXT: i32.and
+; W64-NEXT: local.tee 3
+; W64-NEXT: i32.sub
+; W64-NEXT: i32.const 0
+; W64-NEXT: local.get 2
+; W64-NEXT: i32.const 1
+; W64-NEXT: i32.and
+; W64-NEXT: local.tee 2
+; W64-NEXT: i32.sub
+; W64-NEXT: i32.const 0
+; W64-NEXT: local.get 1
+; W64-NEXT: i32.const 1
+; W64-NEXT: i32.and
+; W64-NEXT: local.tee 1
+; W64-NEXT: i32.sub
+; W64-NEXT: i32.const 0
+; W64-NEXT: local.get 0
+; W64-NEXT: i32.const 1
+; W64-NEXT: i32.and
+; W64-NEXT: local.tee 0
+; W64-NEXT: i32.sub
+; W64-NEXT: local.get 4
+; W64-NEXT: i32.and
+; W64-NEXT: local.get 0
+; W64-NEXT: i32.const -1
+; W64-NEXT: i32.add
+; W64-NEXT: local.get 5
+; W64-NEXT: i32.and
+; W64-NEXT: i32.or
+; W64-NEXT: i32.and
+; W64-NEXT: local.get 1
+; W64-NEXT: i32.const -1
+; W64-NEXT: i32.add
+; W64-NEXT: local.get 6
+; W64-NEXT: i32.and
+; W64-NEXT: i32.or
+; W64-NEXT: i32.and
+; W64-NEXT: local.get 2
+; W64-NEXT: i32.const -1
+; W64-NEXT: i32.add
+; W64-NEXT: local.get 7
+; W64-NEXT: i32.and
+; W64-NEXT: i32.or
+; W64-NEXT: i32.and
+; W64-NEXT: local.get 3
+; W64-NEXT: i32.const -1
+; W64-NEXT: i32.add
+; W64-NEXT: local.get 8
+; W64-NEXT: i32.and
+; W64-NEXT: i32.or
+; W64-NEXT: # fallthrough-return
+ %sel1 = call i32 @llvm.ct.select.i32(i1 %c1, i32 %a, i32 %b)
+ %sel2 = call i32 @llvm.ct.select.i32(i1 %c2, i32 %sel1, i32 %c)
+ %sel3 = call i32 @llvm.ct.select.i32(i1 %c3, i32 %sel2, i32 %d)
+ %sel4 = call i32 @llvm.ct.select.i32(i1 %c4, i32 %sel3, i32 %e)
+ ret i32 %sel4
+}
+
+; Declare the intrinsics
+declare i1 @llvm.ct.select.i1(i1, i1, i1)
+declare i32 @llvm.ct.select.i32(i1, i32, i32)
+declare ptr @llvm.ct.select.p0(i1, ptr, ptr)
diff --git a/llvm/test/CodeGen/WebAssembly/ctselect-fallback-patterns.ll b/llvm/test/CodeGen/WebAssembly/ctselect-fallback-patterns.ll
new file mode 100644
index 0000000000000..040ee44addb69
--- /dev/null
+++ b/llvm/test/CodeGen/WebAssembly/ctselect-fallback-patterns.ll
@@ -0,0 +1,641 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 5
+; RUN: llc < %s -mtriple=wasm32-unknown-unknown -O3 -filetype=asm | FileCheck %s --check-prefix=W32
+; RUN: llc < %s -mtriple=wasm64-unknown-unknown -O3 -filetype=asm | FileCheck %s --check-prefix=W64
+
+; Test smin(x, 0) pattern
+define i32 @test_ctselect_smin_zero(i32 %x) {
+; W32-LABEL: test_ctselect_smin_zero:
+; W32: .functype test_ctselect_smin_zero (i32) -> (i32)
+; W32-NEXT: # %bb.0:
+; W32-NEXT: local.get 0
+; W32-NEXT: i32.const 31
+; W32-NEXT: i32.shr_s
+; W32-NEXT: local.get 0
+; W32-NEXT: i32.and
+; W32-NEXT: # fallthrough-return
+;
+; W64-LABEL: test_ctselect_smin_zero:
+; W64: .functype test_ctselect_smin_zero (i32) -> (i32)
+; W64-NEXT: # %bb.0:
+; W64-NEXT: local.get 0
+; W64-NEXT: i32.const 31
+; W64-NEXT: i32.shr_s
+; W64-NEXT: local.get 0
+; W64-NEXT: i32.and
+; W64-NEXT: # fallthrough-return
+ %cmp = icmp slt i32 %x, 0
+ %result = call i32 @llvm.ct.select.i32(i1 %cmp, i32 %x, i32 0)
+ ret i32 %result
+}
+
+; Test smax(x, 0) pattern
+define i32 @test_ctselect_smax_zero(i32 %x) {
+; W32-LABEL: test_ctselect_smax_zero:
+; W32: .functype test_ctselect_smax_zero (i32) -> (i32)
+; W32-NEXT: # %bb.0:
+; W32-NEXT: local.get 0
+; W32-NEXT: i32.const 0
+; W32-NEXT: local.get 0
+; W32-NEXT: i32.const 0
+; W32-NEXT: i32.gt_s
+; W32-NEXT: i32.select
+; W32-NEXT: # fallthrough-return
+;
+; W64-LABEL: test_ctselect_smax_zero:
+; W64: .functype test_ctselect_smax_zero (i32) -> (i32)
+; W64-NEXT: # %bb.0:
+; W64-NEXT: local.get 0
+; W64-NEXT: i32.const 0
+; W64-NEXT: local.get 0
+; W64-NEXT: i32.const 0
+; W64-NEXT: i32.gt_s
+; W64-NEXT: i32.select
+; W64-NEXT: # fallthrough-return
+ %cmp = icmp sgt i32 %x, 0
+ %result = call i32 @llvm.ct.select.i32(i1 %cmp, i32 %x, i32 0)
+ ret i32 %result
+}
+
+; Test generic smin pattern
+define i32 @test_ctselect_smin_generic(i32 %x, i32 %y) {
+; W32-LABEL: test_ctselect_smin_generic:
+; W32: .functype test_ctselect_smin_generic (i32, i32) -> (i32)
+; W32-NEXT: .local i32
+; W32-NEXT: # %bb.0:
+; W32-NEXT: i32.const -1
+; W32-NEXT: i32.const 0
+; W32-NEXT: local.get 0
+; W32-NEXT: local.get 1
+; W32-NEXT: i32.lt_s
+; W32-NEXT: i32.select
+; W32-NEXT: local.tee 2
+; W32-NEXT: local.get 0
+; W32-NEXT: i32.and
+; W32-NEXT: local.get 2
+; W32-NEXT: i32.const -1
+; W32-NEXT: i32.xor
+; W32-NEXT: local.get 1
+; W32-NEXT: i32.and
+; W32-NEXT: i32.or
+; W32-NEXT: # fallthrough-return
+;
+; W64-LABEL: test_ctselect_smin_generic:
+; W64: .functype test_ctselect_smin_generic (i32, i32) -> (i32)
+; W64-NEXT: .local i32
+; W64-NEXT: # %bb.0:
+; W64-NEXT: i32.const -1
+; W64-NEXT: i32.const 0
+; W64-NEXT: local.get 0
+; W64-NEXT: local.get 1
+; W64-NEXT: i32.lt_s
+; W64-NEXT: i32.select
+; W64-NEXT: local.tee 2
+; W64-NEXT: local.get 0
+; W64-NEXT: i32.and
+; W64-NEXT: local.get 2
+; W64-NEXT: i32.const -1
+; W64-NEXT: i32.xor
+; W64-NEXT: local.get 1
+; W64-NEXT: i32.and
+; W64-NEXT: i32.or
+; W64-NEXT: # fallthrough-return
+ %cmp = icmp slt i32 %x, %y
+ %result = call i32 @llvm.ct.select.i32(i1 %cmp, i32 %x, i32 %y)
+ ret i32 %result
+}
+
+; Test generic smax pattern
+define i32 @test_ctselect_smax_generic(i32 %x, i32 %y) {
+; W32-LABEL: test_ctselect_smax_generic:
+; W32: .functype test_ctselect_smax_generic (i32, i32) -> (i32)
+; W32-NEXT: .local i32
+; W32-NEXT: # %bb.0:
+; W32-NEXT: i32.const -1
+; W32-NEXT: i32.const 0
+; W32-NEXT: local.get 0
+; W32-NEXT: local.get 1
+; W32-NEXT: i32.gt_s
+; W32-NEXT: i32.select
+; W32-NEXT: local.tee 2
+; W32-NEXT: local.get 0
+; W32-NEXT: i32.and
+; W32-NEXT: local.get 2
+; W32-NEXT: i32.const -1
+; W32-NEXT: i32.xor
+; W32-NEXT: local.get 1
+; W32-NEXT: i32.and
+; W32-NEXT: i32.or
+; W32-NEXT: # fallthrough-return
+;
+; W64-LABEL: test_ctselect_smax_generic:
+; W64: .functype test_ctselect_smax_generic (i32, i32) -> (i32)
+; W64-NEXT: .local i32
+; W64-NEXT: # %bb.0:
+; W64-NEXT: i32.const -1
+; W64-NEXT: i32.const 0
+; W64-NEXT: local.get 0
+; W64-NEXT: local.get 1
+; W64-NEXT: i32.gt_s
+; W64-NEXT: i32.select
+; W64-NEXT: local.tee 2
+; W64-NEXT: local.get 0
+; W64-NEXT: i32.and
+; W64-NEXT: local.get 2
+; W64-NEXT: i32.const -1
+; W64-NEXT: i32.xor
+; W64-NEXT: local.get 1
+; W64-NEXT: i32.and
+; W64-NEXT: i32.or
+; W64-NEXT: # fallthrough-return
+ %cmp = icmp sgt i32 %x, %y
+ %result = call i32 @llvm.ct.select.i32(i1 %cmp, i32 %x, i32 %y)
+ ret i32 %result
+}
+
+; Test umin pattern
+define i32 @test_ctselect_umin_generic(i32 %x, i32 %y) {
+; W32-LABEL: test_ctselect_umin_generic:
+; W32: .functype test_ctselect_umin_generic (i32, i32) -> (i32)
+; W32-NEXT: .local i32
+; W32-NEXT: # %bb.0:
+; W32-NEXT: i32.const -1
+; W32-NEXT: i32.const 0
+; W32-NEXT: local.get 0
+; W32-NEXT: local.get 1
+; W32-NEXT: i32.lt_u
+; W32-NEXT: i32.select
+; W32-NEXT: local.tee 2
+; W32-NEXT: local.get 0
+; W32-NEXT: i32.and
+; W32-NEXT: local.get 2
+; W32-NEXT: i32.const -1
+; W32-NEXT: i32.xor
+; W32-NEXT: local.get 1
+; W32-NEXT: i32.and
+; W32-NEXT: i32.or
+; W32-NEXT: # fallthrough-return
+;
+; W64-LABEL: test_ctselect_umin_generic:
+; W64: .functype test_ctselect_umin_generic (i32, i32) -> (i32)
+; W64-NEXT: .local i32
+; W64-NEXT: # %bb.0:
+; W64-NEXT: i32.const -1
+; W64-NEXT: i32.const 0
+; W64-NEXT: local.get 0
+; W64-NEXT: local.get 1
+; W64-NEXT: i32.lt_u
+; W64-NEXT: i32.select
+; W64-NEXT: local.tee 2
+; W64-NEXT: local.get 0
+; W64-NEXT: i32.and
+; W64-NEXT: local.get 2
+; W64-NEXT: i32.const -1
+; W64-NEXT: i32.xor
+; W64-NEXT: local.get 1
+; W64-NEXT: i32.and
+; W64-NEXT: i32.or
+; W64-NEXT: # fallthrough-return
+ %cmp = icmp ult i32 %x, %y
+ %result = call i32 @llvm.ct.select.i32(i1 %cmp, i32 %x, i32 %y)
+ ret i32 %result
+}
+
+; Test umax pattern
+define i32 @test_ctselect_umax_generic(i32 %x, i32 %y) {
+; W32-LABEL: test_ctselect_umax_generic:
+; W32: .functype test_ctselect_umax_generic (i32, i32) -> (i32)
+; W32-NEXT: .local i32
+; W32-NEXT: # %bb.0:
+; W32-NEXT: i32.const -1
+; W32-NEXT: i32.const 0
+; W32-NEXT: local.get 0
+; W32-NEXT: local.get 1
+; W32-NEXT: i32.gt_u
+; W32-NEXT: i32.select
+; W32-NEXT: local.tee 2
+; W32-NEXT: local.get 0
+; W32-NEXT: i32.and
+; W32-NEXT: local.get 2
+; W32-NEXT: i32.const -1
+; W32-NEXT: i32.xor
+; W32-NEXT: local.get 1
+; W32-NEXT: i32.and
+; W32-NEXT: i32.or
+; W32-NEXT: # fallthrough-return
+;
+; W64-LABEL: test_ctselect_umax_generic:
+; W64: .functype test_ctselect_umax_generic (i32, i32) -> (i32)
+; W64-NEXT: .local i32
+; W64-NEXT: # %bb.0:
+; W64-NEXT: i32.const -1
+; W64-NEXT: i32.const 0
+; W64-NEXT: local.get 0
+; W64-NEXT: local.get 1
+; W64-NEXT: i32.gt_u
+; W64-NEXT: i32.select
+; W64-NEXT: local.tee 2
+; W64-NEXT: local.get 0
+; W64-NEXT: i32.and
+; W64-NEXT: local.get 2
+; W64-NEXT: i32.const -1
+; W64-NEXT: i32.xor
+; W64-NEXT: local.get 1
+; W64-NEXT: i32.and
+; W64-NEXT: i32.or
+; W64-NEXT: # fallthrough-return
+ %cmp = icmp ugt i32 %x, %y
+ %result = call i32 @llvm.ct.select.i32(i1 %cmp, i32 %x, i32 %y)
+ ret i32 %result
+}
+
+; Test abs pattern
+define i32 @test_ctselect_abs(i32 %x) {
+; W32-LABEL: test_ctselect_abs:
+; W32: .functype test_ctselect_abs (i32) -> (i32)
+; W32-NEXT: .local i32
+; W32-NEXT: # %bb.0:
+; W32-NEXT: local.get 0
+; W32-NEXT: i32.const 31
+; W32-NEXT: i32.shr_s
+; W32-NEXT: local.tee 1
+; W32-NEXT: i32.const 0
+; W32-NEXT: local.get 0
+; W32-NEXT: i32.sub
+; W32-NEXT: i32.and
+; W32-NEXT: local.get 1
+; W32-NEXT: i32.const -1
+; W32-NEXT: i32.xor
+; W32-NEXT: local.get 0
+; W32-NEXT: i32.and
+; W32-NEXT: i32.or
+; W32-NEXT: # fallthrough-return
+;
+; W64-LABEL: test_ctselect_abs:
+; W64: .functype test_ctselect_abs (i32) -> (i32)
+; W64-NEXT: .local i32
+; W64-NEXT: # %bb.0:
+; W64-NEXT: local.get 0
+; W64-NEXT: i32.const 31
+; W64-NEXT: i32.shr_s
+; W64-NEXT: local.tee 1
+; W64-NEXT: i32.const 0
+; W64-NEXT: local.get 0
+; W64-NEXT: i32.sub
+; W64-NEXT: i32.and
+; W64-NEXT: local.get 1
+; W64-NEXT: i32.const -1
+; W64-NEXT: i32.xor
+; W64-NEXT: local.get 0
+; W64-NEXT: i32.and
+; W64-NEXT: i32.or
+; W64-NEXT: # fallthrough-return
+ %neg = sub i32 0, %x
+ %cmp = icmp slt i32 %x, 0
+ %result = call i32 @llvm.ct.select.i32(i1 %cmp, i32 %neg, i32 %x)
+ ret i32 %result
+}
+
+; Test nabs pattern (negative abs)
+define i32 @test_ctselect_nabs(i32 %x) {
+; W32-LABEL: test_ctselect_nabs:
+; W32: .functype test_ctselect_nabs (i32) -> (i32)
+; W32-NEXT: .local i32
+; W32-NEXT: # %bb.0:
+; W32-NEXT: local.get 0
+; W32-NEXT: i32.const 31
+; W32-NEXT: i32.shr_s
+; W32-NEXT: local.tee 1
+; W32-NEXT: local.get 0
+; W32-NEXT: i32.and
+; W32-NEXT: local.get 1
+; W32-NEXT: i32.const -1
+; W32-NEXT: i32.xor
+; W32-NEXT: i32.const 0
+; W32-NEXT: local.get 0
+; W32-NEXT: i32.sub
+; W32-NEXT: i32.and
+; W32-NEXT: i32.or
+; W32-NEXT: # fallthrough-return
+;
+; W64-LABEL: test_ctselect_nabs:
+; W64: .functype test_ctselect_nabs (i32) -> (i32)
+; W64-NEXT: .local i32
+; W64-NEXT: # %bb.0:
+; W64-NEXT: local.get 0
+; W64-NEXT: i32.const 31
+; W64-NEXT: i32.shr_s
+; W64-NEXT: local.tee 1
+; W64-NEXT: local.get 0
+; W64-NEXT: i32.and
+; W64-NEXT: local.get 1
+; W64-NEXT: i32.const -1
+; W64-NEXT: i32.xor
+; W64-NEXT: i32.const 0
+; W64-NEXT: local.get 0
+; W64-NEXT: i32.sub
+; W64-NEXT: i32.and
+; W64-NEXT: i32.or
+; W64-NEXT: # fallthrough-return
+ %neg = sub i32 0, %x
+ %cmp = icmp slt i32 %x, 0
+ %result = call i32 @llvm.ct.select.i32(i1 %cmp, i32 %x, i32 %neg)
+ ret i32 %result
+}
+
+; Test sign extension pattern
+define i32 @test_ctselect_sign_extend(i32 %x) {
+; W32-LABEL: test_ctselect_sign_extend:
+; W32: .functype test_ctselect_sign_extend (i32) -> (i32)
+; W32-NEXT: # %bb.0:
+; W32-NEXT: local.get 0
+; W32-NEXT: i32.const 31
+; W32-NEXT: i32.shr_s
+; W32-NEXT: # fallthrough-return
+;
+; W64-LABEL: test_ctselect_sign_extend:
+; W64: .functype test_ctselect_sign_extend (i32) -> (i32)
+; W64-NEXT: # %bb.0:
+; W64-NEXT: local.get 0
+; W64-NEXT: i32.const 31
+; W64-NEXT: i32.shr_s
+; W64-NEXT: # fallthrough-return
+ %cmp = icmp slt i32 %x, 0
+ %result = call i32 @llvm.ct.select.i32(i1 %cmp, i32 -1, i32 0)
+ ret i32 %result
+}
+
+; Test zero extension pattern
+define i32 @test_ctselect_zero_extend(i32 %x) {
+; W32-LABEL: test_ctselect_zero_extend:
+; W32: .functype test_ctselect_zero_extend (i32) -> (i32)
+; W32-NEXT: # %bb.0:
+; W32-NEXT: local.get 0
+; W32-NEXT: i32.const 0
+; W32-NEXT: i32.ne
+; W32-NEXT: # fallthrough-return
+;
+; W64-LABEL: test_ctselect_zero_extend:
+; W64: .functype test_ctselect_zero_extend (i32) -> (i32)
+; W64-NEXT: # %bb.0:
+; W64-NEXT: local.get 0
+; W64-NEXT: i32.const 0
+; W64-NEXT: i32.ne
+; W64-NEXT: # fallthrough-return
+ %cmp = icmp ne i32 %x, 0
+ %result = call i32 @llvm.ct.select.i32(i1 %cmp, i32 1, i32 0)
+ ret i32 %result
+}
+
+; Test constant folding with known condition
+define i32 @test_ctselect_constant_folding_true(i32 %a, i32 %b) {
+; W32-LABEL: test_ctselect_constant_folding_true:
+; W32: .functype test_ctselect_constant_folding_true (i32, i32) -> (i32)
+; W32-NEXT: # %bb.0:
+; W32-NEXT: local.get 0
+; W32-NEXT: # fallthrough-return
+;
+; W64-LABEL: test_ctselect_constant_folding_true:
+; W64: .functype test_ctselect_constant_folding_true (i32, i32) -> (i32)
+; W64-NEXT: # %bb.0:
+; W64-NEXT: local.get 0
+; W64-NEXT: # fallthrough-return
+ %result = call i32 @llvm.ct.select.i32(i1 true, i32 %a, i32 %b)
+ ret i32 %result
+}
+
+define i32 @test_ctselect_constant_folding_false(i32 %a, i32 %b) {
+; W32-LABEL: test_ctselect_constant_folding_false:
+; W32: .functype test_ctselect_constant_folding_false (i32, i32) -> (i32)
+; W32-NEXT: # %bb.0:
+; W32-NEXT: i32.const 0
+; W32-NEXT: local.get 1
+; W32-NEXT: i32.or
+; W32-NEXT: # fallthrough-return
+;
+; W64-LABEL: test_ctselect_constant_folding_false:
+; W64: .functype test_ctselect_constant_folding_false (i32, i32) -> (i32)
+; W64-NEXT: # %bb.0:
+; W64-NEXT: i32.const 0
+; W64-NEXT: local.get 1
+; W64-NEXT: i32.or
+; W64-NEXT: # fallthrough-return
+ %result = call i32 @llvm.ct.select.i32(i1 false, i32 %a, i32 %b)
+ ret i32 %result
+}
+
+; Test with identical operands
+define i32 @test_ctselect_identical_operands(i1 %cond, i32 %x) {
+; W32-LABEL: test_ctselect_identical_operands:
+; W32: .functype test_ctselect_identical_operands (i32, i32) -> (i32)
+; W32-NEXT: # %bb.0:
+; W32-NEXT: i32.const 0
+; W32-NEXT: local.get 0
+; W32-NEXT: i32.const 1
+; W32-NEXT: i32.and
+; W32-NEXT: local.tee 0
+; W32-NEXT: i32.sub
+; W32-NEXT: local.get 1
+; W32-NEXT: i32.and
+; W32-NEXT: local.get 0
+; W32-NEXT: i32.const -1
+; W32-NEXT: i32.add
+; W32-NEXT: local.get 1
+; W32-NEXT: i32.and
+; W32-NEXT: i32.or
+; W32-NEXT: # fallthrough-return
+;
+; W64-LABEL: test_ctselect_identical_operands:
+; W64: .functype test_ctselect_identical_operands (i32, i32) -> (i32)
+; W64-NEXT: # %bb.0:
+; W64-NEXT: i32.const 0
+; W64-NEXT: local.get 0
+; W64-NEXT: i32.const 1
+; W64-NEXT: i32.and
+; W64-NEXT: local.tee 0
+; W64-NEXT: i32.sub
+; W64-NEXT: local.get 1
+; W64-NEXT: i32.and
+; W64-NEXT: local.get 0
+; W64-NEXT: i32.const -1
+; W64-NEXT: i32.add
+; W64-NEXT: local.get 1
+; W64-NEXT: i32.and
+; W64-NEXT: i32.or
+; W64-NEXT: # fallthrough-return
+ %result = call i32 @llvm.ct.select.i32(i1 %cond, i32 %x, i32 %x)
+ ret i32 %result
+}
+
+; Test with inverted condition
+define i32 @test_ctselect_inverted_condition(i32 %x, i32 %y, i32 %a, i32 %b) {
+; W32-LABEL: test_ctselect_inverted_condition:
+; W32: .functype test_ctselect_inverted_condition (i32, i32, i32, i32) -> (i32)
+; W32-NEXT: # %bb.0:
+; W32-NEXT: i32.const -1
+; W32-NEXT: i32.const 0
+; W32-NEXT: local.get 0
+; W32-NEXT: local.get 1
+; W32-NEXT: i32.ne
+; W32-NEXT: i32.select
+; W32-NEXT: local.tee 1
+; W32-NEXT: local.get 2
+; W32-NEXT: i32.and
+; W32-NEXT: local.get 1
+; W32-NEXT: i32.const -1
+; W32-NEXT: i32.xor
+; W32-NEXT: local.get 3
+; W32-NEXT: i32.and
+; W32-NEXT: i32.or
+; W32-NEXT: # fallthrough-return
+;
+; W64-LABEL: test_ctselect_inverted_condition:
+; W64: .functype test_ctselect_inverted_condition (i32, i32, i32, i32) -> (i32)
+; W64-NEXT: # %bb.0:
+; W64-NEXT: i32.const -1
+; W64-NEXT: i32.const 0
+; W64-NEXT: local.get 0
+; W64-NEXT: local.get 1
+; W64-NEXT: i32.ne
+; W64-NEXT: i32.select
+; W64-NEXT: local.tee 1
+; W64-NEXT: local.get 2
+; W64-NEXT: i32.and
+; W64-NEXT: local.get 1
+; W64-NEXT: i32.const -1
+; W64-NEXT: i32.xor
+; W64-NEXT: local.get 3
+; W64-NEXT: i32.and
+; W64-NEXT: i32.or
+; W64-NEXT: # fallthrough-return
+ %cmp = icmp eq i32 %x, %y
+ %not_cmp = xor i1 %cmp, true
+ %result = call i32 @llvm.ct.select.i32(i1 %not_cmp, i32 %a, i32 %b)
+ ret i32 %result
+}
+
+; Test chain of ct.select operations
+define i32 @test_ctselect_chain(i1 %c1, i1 %c2, i1 %c3, i32 %a, i32 %b, i32 %c, i32 %d) {
+; W32-LABEL: test_ctselect_chain:
+; W32: .functype test_ctselect_chain (i32, i32, i32, i32, i32, i32, i32) -> (i32)
+; W32-NEXT: # %bb.0:
+; W32-NEXT: i32.const 0
+; W32-NEXT: local.get 2
+; W32-NEXT: i32.const 1
+; W32-NEXT: i32.and
+; W32-NEXT: local.tee 2
+; W32-NEXT: i32.sub
+; W32-NEXT: i32.const 0
+; W32-NEXT: local.get 1
+; W32-NEXT: i32.const 1
+; W32-NEXT: i32.and
+; W32-NEXT: local.tee 1
+; W32-NEXT: i32.sub
+; W32-NEXT: i32.const 0
+; W32-NEXT: local.get 0
+; W32-NEXT: i32.const 1
+; W32-NEXT: i32.and
+; W32-NEXT: local.tee 0
+; W32-NEXT: i32.sub
+; W32-NEXT: local.get 3
+; W32-NEXT: i32.and
+; W32-NEXT: local.get 0
+; W32-NEXT: i32.const -1
+; W32-NEXT: i32.add
+; W32-NEXT: local.get 4
+; W32-NEXT: i32.and
+; W32-NEXT: i32.or
+; W32-NEXT: i32.and
+; W32-NEXT: local.get 1
+; W32-NEXT: i32.const -1
+; W32-NEXT: i32.add
+; W32-NEXT: local.get 5
+; W32-NEXT: i32.and
+; W32-NEXT: i32.or
+; W32-NEXT: i32.and
+; W32-NEXT: local.get 2
+; W32-NEXT: i32.const -1
+; W32-NEXT: i32.add
+; W32-NEXT: local.get 6
+; W32-NEXT: i32.and
+; W32-NEXT: i32.or
+; W32-NEXT: # fallthrough-return
+;
+; W64-LABEL: test_ctselect_chain:
+; W64: .functype test_ctselect_chain (i32, i32, i32, i32, i32, i32, i32) -> (i32)
+; W64-NEXT: # %bb.0:
+; W64-NEXT: i32.const 0
+; W64-NEXT: local.get 2
+; W64-NEXT: i32.const 1
+; W64-NEXT: i32.and
+; W64-NEXT: local.tee 2
+; W64-NEXT: i32.sub
+; W64-NEXT: i32.const 0
+; W64-NEXT: local.get 1
+; W64-NEXT: i32.const 1
+; W64-NEXT: i32.and
+; W64-NEXT: local.tee 1
+; W64-NEXT: i32.sub
+; W64-NEXT: i32.const 0
+; W64-NEXT: local.get 0
+; W64-NEXT: i32.const 1
+; W64-NEXT: i32.and
+; W64-NEXT: local.tee 0
+; W64-NEXT: i32.sub
+; W64-NEXT: local.get 3
+; W64-NEXT: i32.and
+; W64-NEXT: local.get 0
+; W64-NEXT: i32.const -1
+; W64-NEXT: i32.add
+; W64-NEXT: local.get 4
+; W64-NEXT: i32.and
+; W64-NEXT: i32.or
+; W64-NEXT: i32.and
+; W64-NEXT: local.get 1
+; W64-NEXT: i32.const -1
+; W64-NEXT: i32.add
+; W64-NEXT: local.get 5
+; W64-NEXT: i32.and
+; W64-NEXT: i32.or
+; W64-NEXT: i32.and
+; W64-NEXT: local.get 2
+; W64-NEXT: i32.const -1
+; W64-NEXT: i32.add
+; W64-NEXT: local.get 6
+; W64-NEXT: i32.and
+; W64-NEXT: i32.or
+; W64-NEXT: # fallthrough-return
+ %sel1 = call i32 @llvm.ct.select.i32(i1 %c1, i32 %a, i32 %b)
+ %sel2 = call i32 @llvm.ct.select.i32(i1 %c2, i32 %sel1, i32 %c)
+ %sel3 = call i32 @llvm.ct.select.i32(i1 %c3, i32 %sel2, i32 %d)
+ ret i32 %sel3
+}
+
+; Test for 64-bit operations (supported on all 64-bit architectures)
+define i64 @test_ctselect_i64_smin_zero(i64 %x) {
+; W32-LABEL: test_ctselect_i64_smin_zero:
+; W32: .functype test_ctselect_i64_smin_zero (i64) -> (i64)
+; W32-NEXT: # %bb.0:
+; W32-NEXT: local.get 0
+; W32-NEXT: i64.const 63
+; W32-NEXT: i64.shr_s
+; W32-NEXT: local.get 0
+; W32-NEXT: i64.and
+; W32-NEXT: # fallthrough-return
+;
+; W64-LABEL: test_ctselect_i64_smin_zero:
+; W64: .functype test_ctselect_i64_smin_zero (i64) -> (i64)
+; W64-NEXT: # %bb.0:
+; W64-NEXT: local.get 0
+; W64-NEXT: i64.const 63
+; W64-NEXT: i64.shr_s
+; W64-NEXT: local.get 0
+; W64-NEXT: i64.and
+; W64-NEXT: # fallthrough-return
+ %cmp = icmp slt i64 %x, 0
+ %result = call i64 @llvm.ct.select.i64(i1 %cmp, i64 %x, i64 0)
+ ret i64 %result
+}
+
+; Declare the intrinsics
+declare i32 @llvm.ct.select.i32(i1, i32, i32)
+declare i64 @llvm.ct.select.i64(i1, i64, i64)
diff --git a/llvm/test/CodeGen/WebAssembly/ctselect-fallback-vector.ll b/llvm/test/CodeGen/WebAssembly/ctselect-fallback-vector.ll
new file mode 100644
index 0000000000000..75e38e1856a03
--- /dev/null
+++ b/llvm/test/CodeGen/WebAssembly/ctselect-fallback-vector.ll
@@ -0,0 +1,714 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 5
+; RUN: llc < %s -mtriple=wasm32-unknown-unknown -O3 -mattr=+simd128 | FileCheck %s --check-prefix=WASM32
+; RUN: llc < %s -mtriple=wasm64-unknown-unknown -O3 -mattr=+simd128 | FileCheck %s --check-prefix=WASM64
+
+; Test 32-bit integer vector (4 x i32 = 128-bit)
+define <4 x i32> @test_ctselect_v4i32(i1 %cond, <4 x i32> %a, <4 x i32> %b) {
+; WASM32-LABEL: test_ctselect_v4i32:
+; WASM32: .functype test_ctselect_v4i32 (i32, v128, v128) -> (v128)
+; WASM32-NEXT: .local v128
+; WASM32-NEXT: # %bb.0:
+; WASM32-NEXT: local.get 0
+; WASM32-NEXT: i32x4.splat
+; WASM32-NEXT: i32.const 31
+; WASM32-NEXT: i32x4.shl
+; WASM32-NEXT: i32.const 31
+; WASM32-NEXT: i32x4.shr_s
+; WASM32-NEXT: local.tee 3
+; WASM32-NEXT: local.get 1
+; WASM32-NEXT: v128.and
+; WASM32-NEXT: local.get 2
+; WASM32-NEXT: local.get 3
+; WASM32-NEXT: v128.andnot
+; WASM32-NEXT: v128.or
+; WASM32-NEXT: # fallthrough-return
+;
+; WASM64-LABEL: test_ctselect_v4i32:
+; WASM64: .functype test_ctselect_v4i32 (i32, v128, v128) -> (v128)
+; WASM64-NEXT: .local v128
+; WASM64-NEXT: # %bb.0:
+; WASM64-NEXT: local.get 0
+; WASM64-NEXT: i32x4.splat
+; WASM64-NEXT: i32.const 31
+; WASM64-NEXT: i32x4.shl
+; WASM64-NEXT: i32.const 31
+; WASM64-NEXT: i32x4.shr_s
+; WASM64-NEXT: local.tee 3
+; WASM64-NEXT: local.get 1
+; WASM64-NEXT: v128.and
+; WASM64-NEXT: local.get 2
+; WASM64-NEXT: local.get 3
+; WASM64-NEXT: v128.andnot
+; WASM64-NEXT: v128.or
+; WASM64-NEXT: # fallthrough-return
+ %result = call <4 x i32> @llvm.ct.select.v4i32(i1 %cond, <4 x i32> %a, <4 x i32> %b)
+ ret <4 x i32> %result
+}
+
+; Test 16-bit integer vector (8 x i16 = 128-bit)
+define <8 x i16> @test_ctselect_v8i16(i1 %cond, <8 x i16> %a, <8 x i16> %b) {
+; WASM32-LABEL: test_ctselect_v8i16:
+; WASM32: .functype test_ctselect_v8i16 (i32, v128, v128) -> (v128)
+; WASM32-NEXT: .local v128
+; WASM32-NEXT: # %bb.0:
+; WASM32-NEXT: local.get 0
+; WASM32-NEXT: i16x8.splat
+; WASM32-NEXT: i32.const 15
+; WASM32-NEXT: i16x8.shl
+; WASM32-NEXT: i32.const 15
+; WASM32-NEXT: i16x8.shr_s
+; WASM32-NEXT: local.tee 3
+; WASM32-NEXT: local.get 1
+; WASM32-NEXT: v128.and
+; WASM32-NEXT: local.get 2
+; WASM32-NEXT: local.get 3
+; WASM32-NEXT: v128.andnot
+; WASM32-NEXT: v128.or
+; WASM32-NEXT: # fallthrough-return
+;
+; WASM64-LABEL: test_ctselect_v8i16:
+; WASM64: .functype test_ctselect_v8i16 (i32, v128, v128) -> (v128)
+; WASM64-NEXT: .local v128
+; WASM64-NEXT: # %bb.0:
+; WASM64-NEXT: local.get 0
+; WASM64-NEXT: i16x8.splat
+; WASM64-NEXT: i32.const 15
+; WASM64-NEXT: i16x8.shl
+; WASM64-NEXT: i32.const 15
+; WASM64-NEXT: i16x8.shr_s
+; WASM64-NEXT: local.tee 3
+; WASM64-NEXT: local.get 1
+; WASM64-NEXT: v128.and
+; WASM64-NEXT: local.get 2
+; WASM64-NEXT: local.get 3
+; WASM64-NEXT: v128.andnot
+; WASM64-NEXT: v128.or
+; WASM64-NEXT: # fallthrough-return
+ %result = call <8 x i16> @llvm.ct.select.v8i16(i1 %cond, <8 x i16> %a, <8 x i16> %b)
+ ret <8 x i16> %result
+}
+
+; Test byte vector (16 x i8 = 128-bit)
+define <16 x i8> @test_ctselect_v16i8(i1 %cond, <16 x i8> %a, <16 x i8> %b) {
+; WASM32-LABEL: test_ctselect_v16i8:
+; WASM32: .functype test_ctselect_v16i8 (i32, v128, v128) -> (v128)
+; WASM32-NEXT: .local v128
+; WASM32-NEXT: # %bb.0:
+; WASM32-NEXT: local.get 0
+; WASM32-NEXT: i8x16.splat
+; WASM32-NEXT: i32.const 7
+; WASM32-NEXT: i8x16.shl
+; WASM32-NEXT: i32.const 7
+; WASM32-NEXT: i8x16.shr_s
+; WASM32-NEXT: local.tee 3
+; WASM32-NEXT: local.get 1
+; WASM32-NEXT: v128.and
+; WASM32-NEXT: local.get 2
+; WASM32-NEXT: local.get 3
+; WASM32-NEXT: v128.andnot
+; WASM32-NEXT: v128.or
+; WASM32-NEXT: # fallthrough-return
+;
+; WASM64-LABEL: test_ctselect_v16i8:
+; WASM64: .functype test_ctselect_v16i8 (i32, v128, v128) -> (v128)
+; WASM64-NEXT: .local v128
+; WASM64-NEXT: # %bb.0:
+; WASM64-NEXT: local.get 0
+; WASM64-NEXT: i8x16.splat
+; WASM64-NEXT: i32.const 7
+; WASM64-NEXT: i8x16.shl
+; WASM64-NEXT: i32.const 7
+; WASM64-NEXT: i8x16.shr_s
+; WASM64-NEXT: local.tee 3
+; WASM64-NEXT: local.get 1
+; WASM64-NEXT: v128.and
+; WASM64-NEXT: local.get 2
+; WASM64-NEXT: local.get 3
+; WASM64-NEXT: v128.andnot
+; WASM64-NEXT: v128.or
+; WASM64-NEXT: # fallthrough-return
+ %result = call <16 x i8> @llvm.ct.select.v16i8(i1 %cond, <16 x i8> %a, <16 x i8> %b)
+ ret <16 x i8> %result
+}
+
+; Test 64-bit integer vector (2 x i64 = 128-bit)
+define <2 x i64> @test_ctselect_v2i64(i1 %cond, <2 x i64> %a, <2 x i64> %b) {
+; WASM32-LABEL: test_ctselect_v2i64:
+; WASM32: .functype test_ctselect_v2i64 (i32, v128, v128) -> (v128)
+; WASM32-NEXT: .local v128
+; WASM32-NEXT: # %bb.0:
+; WASM32-NEXT: local.get 0
+; WASM32-NEXT: i32x4.splat
+; WASM32-NEXT: i32.const 63
+; WASM32-NEXT: i64x2.shl
+; WASM32-NEXT: i32.const 63
+; WASM32-NEXT: i64x2.shr_s
+; WASM32-NEXT: local.tee 3
+; WASM32-NEXT: local.get 1
+; WASM32-NEXT: v128.and
+; WASM32-NEXT: local.get 2
+; WASM32-NEXT: local.get 3
+; WASM32-NEXT: v128.andnot
+; WASM32-NEXT: v128.or
+; WASM32-NEXT: # fallthrough-return
+;
+; WASM64-LABEL: test_ctselect_v2i64:
+; WASM64: .functype test_ctselect_v2i64 (i32, v128, v128) -> (v128)
+; WASM64-NEXT: .local v128
+; WASM64-NEXT: # %bb.0:
+; WASM64-NEXT: local.get 0
+; WASM64-NEXT: i32x4.splat
+; WASM64-NEXT: i32.const 63
+; WASM64-NEXT: i64x2.shl
+; WASM64-NEXT: i32.const 63
+; WASM64-NEXT: i64x2.shr_s
+; WASM64-NEXT: local.tee 3
+; WASM64-NEXT: local.get 1
+; WASM64-NEXT: v128.and
+; WASM64-NEXT: local.get 2
+; WASM64-NEXT: local.get 3
+; WASM64-NEXT: v128.andnot
+; WASM64-NEXT: v128.or
+; WASM64-NEXT: # fallthrough-return
+ %result = call <2 x i64> @llvm.ct.select.v2i64(i1 %cond, <2 x i64> %a, <2 x i64> %b)
+ ret <2 x i64> %result
+}
+
+; Test single-precision float vector (4 x float = 128-bit)
+define <4 x float> @test_ctselect_v4f32(i1 %cond, <4 x float> %a, <4 x float> %b) {
+; WASM32-LABEL: test_ctselect_v4f32:
+; WASM32: .functype test_ctselect_v4f32 (i32, v128, v128) -> (v128)
+; WASM32-NEXT: .local v128
+; WASM32-NEXT: # %bb.0:
+; WASM32-NEXT: local.get 0
+; WASM32-NEXT: i32x4.splat
+; WASM32-NEXT: i32.const 31
+; WASM32-NEXT: i32x4.shl
+; WASM32-NEXT: i32.const 31
+; WASM32-NEXT: i32x4.shr_s
+; WASM32-NEXT: local.tee 3
+; WASM32-NEXT: local.get 1
+; WASM32-NEXT: v128.and
+; WASM32-NEXT: local.get 2
+; WASM32-NEXT: local.get 3
+; WASM32-NEXT: v128.andnot
+; WASM32-NEXT: v128.or
+; WASM32-NEXT: # fallthrough-return
+;
+; WASM64-LABEL: test_ctselect_v4f32:
+; WASM64: .functype test_ctselect_v4f32 (i32, v128, v128) -> (v128)
+; WASM64-NEXT: .local v128
+; WASM64-NEXT: # %bb.0:
+; WASM64-NEXT: local.get 0
+; WASM64-NEXT: i32x4.splat
+; WASM64-NEXT: i32.const 31
+; WASM64-NEXT: i32x4.shl
+; WASM64-NEXT: i32.const 31
+; WASM64-NEXT: i32x4.shr_s
+; WASM64-NEXT: local.tee 3
+; WASM64-NEXT: local.get 1
+; WASM64-NEXT: v128.and
+; WASM64-NEXT: local.get 2
+; WASM64-NEXT: local.get 3
+; WASM64-NEXT: v128.andnot
+; WASM64-NEXT: v128.or
+; WASM64-NEXT: # fallthrough-return
+ %result = call <4 x float> @llvm.ct.select.v4f32(i1 %cond, <4 x float> %a, <4 x float> %b)
+ ret <4 x float> %result
+}
+
+; Test double-precision float vector (2 x double = 128-bit)
+define <2 x double> @test_ctselect_v2f64(i1 %cond, <2 x double> %a, <2 x double> %b) {
+; WASM32-LABEL: test_ctselect_v2f64:
+; WASM32: .functype test_ctselect_v2f64 (i32, v128, v128) -> (v128)
+; WASM32-NEXT: .local v128
+; WASM32-NEXT: # %bb.0:
+; WASM32-NEXT: local.get 0
+; WASM32-NEXT: i32x4.splat
+; WASM32-NEXT: i32.const 63
+; WASM32-NEXT: i64x2.shl
+; WASM32-NEXT: i32.const 63
+; WASM32-NEXT: i64x2.shr_s
+; WASM32-NEXT: local.tee 3
+; WASM32-NEXT: local.get 1
+; WASM32-NEXT: v128.and
+; WASM32-NEXT: local.get 2
+; WASM32-NEXT: local.get 3
+; WASM32-NEXT: v128.andnot
+; WASM32-NEXT: v128.or
+; WASM32-NEXT: # fallthrough-return
+;
+; WASM64-LABEL: test_ctselect_v2f64:
+; WASM64: .functype test_ctselect_v2f64 (i32, v128, v128) -> (v128)
+; WASM64-NEXT: .local v128
+; WASM64-NEXT: # %bb.0:
+; WASM64-NEXT: local.get 0
+; WASM64-NEXT: i32x4.splat
+; WASM64-NEXT: i32.const 63
+; WASM64-NEXT: i64x2.shl
+; WASM64-NEXT: i32.const 63
+; WASM64-NEXT: i64x2.shr_s
+; WASM64-NEXT: local.tee 3
+; WASM64-NEXT: local.get 1
+; WASM64-NEXT: v128.and
+; WASM64-NEXT: local.get 2
+; WASM64-NEXT: local.get 3
+; WASM64-NEXT: v128.andnot
+; WASM64-NEXT: v128.or
+; WASM64-NEXT: # fallthrough-return
+ %result = call <2 x double> @llvm.ct.select.v2f64(i1 %cond, <2 x double> %a, <2 x double> %b)
+ ret <2 x double> %result
+}
+
+; Test with aligned loads (common case)
+define <4 x i32> @test_ctselect_v4i32_aligned_load(i1 %cond, ptr %p1, ptr %p2) {
+; WASM32-LABEL: test_ctselect_v4i32_aligned_load:
+; WASM32: .functype test_ctselect_v4i32_aligned_load (i32, i32, i32) -> (v128)
+; WASM32-NEXT: .local v128
+; WASM32-NEXT: # %bb.0:
+; WASM32-NEXT: local.get 0
+; WASM32-NEXT: i32x4.splat
+; WASM32-NEXT: i32.const 31
+; WASM32-NEXT: i32x4.shl
+; WASM32-NEXT: i32.const 31
+; WASM32-NEXT: i32x4.shr_s
+; WASM32-NEXT: local.tee 3
+; WASM32-NEXT: local.get 1
+; WASM32-NEXT: v128.load 0
+; WASM32-NEXT: v128.and
+; WASM32-NEXT: local.get 2
+; WASM32-NEXT: v128.load 0
+; WASM32-NEXT: local.get 3
+; WASM32-NEXT: v128.andnot
+; WASM32-NEXT: v128.or
+; WASM32-NEXT: # fallthrough-return
+;
+; WASM64-LABEL: test_ctselect_v4i32_aligned_load:
+; WASM64: .functype test_ctselect_v4i32_aligned_load (i32, i64, i64) -> (v128)
+; WASM64-NEXT: .local v128
+; WASM64-NEXT: # %bb.0:
+; WASM64-NEXT: local.get 0
+; WASM64-NEXT: i32x4.splat
+; WASM64-NEXT: i32.const 31
+; WASM64-NEXT: i32x4.shl
+; WASM64-NEXT: i32.const 31
+; WASM64-NEXT: i32x4.shr_s
+; WASM64-NEXT: local.tee 3
+; WASM64-NEXT: local.get 1
+; WASM64-NEXT: v128.load 0
+; WASM64-NEXT: v128.and
+; WASM64-NEXT: local.get 2
+; WASM64-NEXT: v128.load 0
+; WASM64-NEXT: local.get 3
+; WASM64-NEXT: v128.andnot
+; WASM64-NEXT: v128.or
+; WASM64-NEXT: # fallthrough-return
+ %a = load <4 x i32>, ptr %p1, align 16
+ %b = load <4 x i32>, ptr %p2, align 16
+ %result = call <4 x i32> @llvm.ct.select.v4i32(i1 %cond, <4 x i32> %a, <4 x i32> %b)
+ ret <4 x i32> %result
+}
+
+; Test with unaligned loads (stress test)
+define <4 x i32> @test_ctselect_v4i32_unaligned_load(i1 %cond, ptr %p1, ptr %p2) {
+; WASM32-LABEL: test_ctselect_v4i32_unaligned_load:
+; WASM32: .functype test_ctselect_v4i32_unaligned_load (i32, i32, i32) -> (v128)
+; WASM32-NEXT: .local v128
+; WASM32-NEXT: # %bb.0:
+; WASM32-NEXT: local.get 0
+; WASM32-NEXT: i32x4.splat
+; WASM32-NEXT: i32.const 31
+; WASM32-NEXT: i32x4.shl
+; WASM32-NEXT: i32.const 31
+; WASM32-NEXT: i32x4.shr_s
+; WASM32-NEXT: local.tee 3
+; WASM32-NEXT: local.get 1
+; WASM32-NEXT: v128.load 0:p2align=2
+; WASM32-NEXT: v128.and
+; WASM32-NEXT: local.get 2
+; WASM32-NEXT: v128.load 0:p2align=2
+; WASM32-NEXT: local.get 3
+; WASM32-NEXT: v128.andnot
+; WASM32-NEXT: v128.or
+; WASM32-NEXT: # fallthrough-return
+;
+; WASM64-LABEL: test_ctselect_v4i32_unaligned_load:
+; WASM64: .functype test_ctselect_v4i32_unaligned_load (i32, i64, i64) -> (v128)
+; WASM64-NEXT: .local v128
+; WASM64-NEXT: # %bb.0:
+; WASM64-NEXT: local.get 0
+; WASM64-NEXT: i32x4.splat
+; WASM64-NEXT: i32.const 31
+; WASM64-NEXT: i32x4.shl
+; WASM64-NEXT: i32.const 31
+; WASM64-NEXT: i32x4.shr_s
+; WASM64-NEXT: local.tee 3
+; WASM64-NEXT: local.get 1
+; WASM64-NEXT: v128.load 0:p2align=2
+; WASM64-NEXT: v128.and
+; WASM64-NEXT: local.get 2
+; WASM64-NEXT: v128.load 0:p2align=2
+; WASM64-NEXT: local.get 3
+; WASM64-NEXT: v128.andnot
+; WASM64-NEXT: v128.or
+; WASM64-NEXT: # fallthrough-return
+ %a = load <4 x i32>, ptr %p1, align 4
+ %b = load <4 x i32>, ptr %p2, align 4
+ %result = call <4 x i32> @llvm.ct.select.v4i32(i1 %cond, <4 x i32> %a, <4 x i32> %b)
+ ret <4 x i32> %result
+}
+
+; Test with stores to verify result handling
+define void @test_ctselect_v4i32_store(i1 %cond, <4 x i32> %a, <4 x i32> %b, ptr %out) {
+; WASM32-LABEL: test_ctselect_v4i32_store:
+; WASM32: .functype test_ctselect_v4i32_store (i32, v128, v128, i32) -> ()
+; WASM32-NEXT: .local v128
+; WASM32-NEXT: # %bb.0:
+; WASM32-NEXT: local.get 3
+; WASM32-NEXT: local.get 0
+; WASM32-NEXT: i32x4.splat
+; WASM32-NEXT: i32.const 31
+; WASM32-NEXT: i32x4.shl
+; WASM32-NEXT: i32.const 31
+; WASM32-NEXT: i32x4.shr_s
+; WASM32-NEXT: local.tee 4
+; WASM32-NEXT: local.get 1
+; WASM32-NEXT: v128.and
+; WASM32-NEXT: local.get 2
+; WASM32-NEXT: local.get 4
+; WASM32-NEXT: v128.andnot
+; WASM32-NEXT: v128.or
+; WASM32-NEXT: v128.store 0
+; WASM32-NEXT: # fallthrough-return
+;
+; WASM64-LABEL: test_ctselect_v4i32_store:
+; WASM64: .functype test_ctselect_v4i32_store (i32, v128, v128, i64) -> ()
+; WASM64-NEXT: .local v128
+; WASM64-NEXT: # %bb.0:
+; WASM64-NEXT: local.get 3
+; WASM64-NEXT: local.get 0
+; WASM64-NEXT: i32x4.splat
+; WASM64-NEXT: i32.const 31
+; WASM64-NEXT: i32x4.shl
+; WASM64-NEXT: i32.const 31
+; WASM64-NEXT: i32x4.shr_s
+; WASM64-NEXT: local.tee 4
+; WASM64-NEXT: local.get 1
+; WASM64-NEXT: v128.and
+; WASM64-NEXT: local.get 2
+; WASM64-NEXT: local.get 4
+; WASM64-NEXT: v128.andnot
+; WASM64-NEXT: v128.or
+; WASM64-NEXT: v128.store 0
+; WASM64-NEXT: # fallthrough-return
+ %result = call <4 x i32> @llvm.ct.select.v4i32(i1 %cond, <4 x i32> %a, <4 x i32> %b)
+ store <4 x i32> %result, ptr %out, align 16
+ ret void
+}
+
+; Test chained selects (multiple conditions)
+define <4 x i32> @test_ctselect_v4i32_chain(i1 %cond1, i1 %cond2, <4 x i32> %a, <4 x i32> %b, <4 x i32> %c) {
+; WASM32-LABEL: test_ctselect_v4i32_chain:
+; WASM32: .functype test_ctselect_v4i32_chain (i32, i32, v128, v128, v128) -> (v128)
+; WASM32-NEXT: .local v128, v128
+; WASM32-NEXT: # %bb.0:
+; WASM32-NEXT: local.get 1
+; WASM32-NEXT: i32x4.splat
+; WASM32-NEXT: i32.const 31
+; WASM32-NEXT: i32x4.shl
+; WASM32-NEXT: i32.const 31
+; WASM32-NEXT: i32x4.shr_s
+; WASM32-NEXT: local.tee 5
+; WASM32-NEXT: local.get 0
+; WASM32-NEXT: i32x4.splat
+; WASM32-NEXT: i32.const 31
+; WASM32-NEXT: i32x4.shl
+; WASM32-NEXT: i32.const 31
+; WASM32-NEXT: i32x4.shr_s
+; WASM32-NEXT: local.tee 6
+; WASM32-NEXT: local.get 2
+; WASM32-NEXT: v128.and
+; WASM32-NEXT: local.get 3
+; WASM32-NEXT: local.get 6
+; WASM32-NEXT: v128.andnot
+; WASM32-NEXT: v128.or
+; WASM32-NEXT: v128.and
+; WASM32-NEXT: local.get 4
+; WASM32-NEXT: local.get 5
+; WASM32-NEXT: v128.andnot
+; WASM32-NEXT: v128.or
+; WASM32-NEXT: # fallthrough-return
+;
+; WASM64-LABEL: test_ctselect_v4i32_chain:
+; WASM64: .functype test_ctselect_v4i32_chain (i32, i32, v128, v128, v128) -> (v128)
+; WASM64-NEXT: .local v128, v128
+; WASM64-NEXT: # %bb.0:
+; WASM64-NEXT: local.get 1
+; WASM64-NEXT: i32x4.splat
+; WASM64-NEXT: i32.const 31
+; WASM64-NEXT: i32x4.shl
+; WASM64-NEXT: i32.const 31
+; WASM64-NEXT: i32x4.shr_s
+; WASM64-NEXT: local.tee 5
+; WASM64-NEXT: local.get 0
+; WASM64-NEXT: i32x4.splat
+; WASM64-NEXT: i32.const 31
+; WASM64-NEXT: i32x4.shl
+; WASM64-NEXT: i32.const 31
+; WASM64-NEXT: i32x4.shr_s
+; WASM64-NEXT: local.tee 6
+; WASM64-NEXT: local.get 2
+; WASM64-NEXT: v128.and
+; WASM64-NEXT: local.get 3
+; WASM64-NEXT: local.get 6
+; WASM64-NEXT: v128.andnot
+; WASM64-NEXT: v128.or
+; WASM64-NEXT: v128.and
+; WASM64-NEXT: local.get 4
+; WASM64-NEXT: local.get 5
+; WASM64-NEXT: v128.andnot
+; WASM64-NEXT: v128.or
+; WASM64-NEXT: # fallthrough-return
+ %tmp = call <4 x i32> @llvm.ct.select.v4i32(i1 %cond1, <4 x i32> %a, <4 x i32> %b)
+ %result = call <4 x i32> @llvm.ct.select.v4i32(i1 %cond2, <4 x i32> %tmp, <4 x i32> %c)
+ ret <4 x i32> %result
+}
+
+; Test with arithmetic operations (ensure float vectors work with FP ops)
+define <4 x float> @test_ctselect_v4f32_arithmetic(i1 %cond, <4 x float> %x, <4 x float> %y) {
+; WASM32-LABEL: test_ctselect_v4f32_arithmetic:
+; WASM32: .functype test_ctselect_v4f32_arithmetic (i32, v128, v128) -> (v128)
+; WASM32-NEXT: .local v128
+; WASM32-NEXT: # %bb.0:
+; WASM32-NEXT: local.get 0
+; WASM32-NEXT: i32x4.splat
+; WASM32-NEXT: i32.const 31
+; WASM32-NEXT: i32x4.shl
+; WASM32-NEXT: i32.const 31
+; WASM32-NEXT: i32x4.shr_s
+; WASM32-NEXT: local.tee 3
+; WASM32-NEXT: local.get 1
+; WASM32-NEXT: local.get 2
+; WASM32-NEXT: f32x4.add
+; WASM32-NEXT: v128.and
+; WASM32-NEXT: local.get 1
+; WASM32-NEXT: local.get 2
+; WASM32-NEXT: f32x4.sub
+; WASM32-NEXT: local.get 3
+; WASM32-NEXT: v128.andnot
+; WASM32-NEXT: v128.or
+; WASM32-NEXT: # fallthrough-return
+;
+; WASM64-LABEL: test_ctselect_v4f32_arithmetic:
+; WASM64: .functype test_ctselect_v4f32_arithmetic (i32, v128, v128) -> (v128)
+; WASM64-NEXT: .local v128
+; WASM64-NEXT: # %bb.0:
+; WASM64-NEXT: local.get 0
+; WASM64-NEXT: i32x4.splat
+; WASM64-NEXT: i32.const 31
+; WASM64-NEXT: i32x4.shl
+; WASM64-NEXT: i32.const 31
+; WASM64-NEXT: i32x4.shr_s
+; WASM64-NEXT: local.tee 3
+; WASM64-NEXT: local.get 1
+; WASM64-NEXT: local.get 2
+; WASM64-NEXT: f32x4.add
+; WASM64-NEXT: v128.and
+; WASM64-NEXT: local.get 1
+; WASM64-NEXT: local.get 2
+; WASM64-NEXT: f32x4.sub
+; WASM64-NEXT: local.get 3
+; WASM64-NEXT: v128.andnot
+; WASM64-NEXT: v128.or
+; WASM64-NEXT: # fallthrough-return
+ %sum = fadd <4 x float> %x, %y
+ %diff = fsub <4 x float> %x, %y
+ %result = call <4 x float> @llvm.ct.select.v4f32(i1 %cond, <4 x float> %sum, <4 x float> %diff)
+ ret <4 x float> %result
+}
+
+; Test with zero vectors
+define <4 x i32> @test_ctselect_v4i32_zeros(i1 %cond, <4 x i32> %a) {
+; WASM32-LABEL: test_ctselect_v4i32_zeros:
+; WASM32: .functype test_ctselect_v4i32_zeros (i32, v128) -> (v128)
+; WASM32-NEXT: # %bb.0:
+; WASM32-NEXT: local.get 0
+; WASM32-NEXT: i32x4.splat
+; WASM32-NEXT: i32.const 31
+; WASM32-NEXT: i32x4.shl
+; WASM32-NEXT: i32.const 31
+; WASM32-NEXT: i32x4.shr_s
+; WASM32-NEXT: local.get 1
+; WASM32-NEXT: v128.and
+; WASM32-NEXT: # fallthrough-return
+;
+; WASM64-LABEL: test_ctselect_v4i32_zeros:
+; WASM64: .functype test_ctselect_v4i32_zeros (i32, v128) -> (v128)
+; WASM64-NEXT: # %bb.0:
+; WASM64-NEXT: local.get 0
+; WASM64-NEXT: i32x4.splat
+; WASM64-NEXT: i32.const 31
+; WASM64-NEXT: i32x4.shl
+; WASM64-NEXT: i32.const 31
+; WASM64-NEXT: i32x4.shr_s
+; WASM64-NEXT: local.get 1
+; WASM64-NEXT: v128.and
+; WASM64-NEXT: # fallthrough-return
+ %result = call <4 x i32> @llvm.ct.select.v4i32(i1 %cond,
+ <4 x i32> %a,
+ <4 x i32> zeroinitializer)
+ ret <4 x i32> %result
+}
+
+; Test with function arguments directly (no loads)
+define <4 x i32> @test_ctselect_v4i32_args(i1 %cond, <4 x i32> %a, <4 x i32> %b) nounwind {
+; WASM32-LABEL: test_ctselect_v4i32_args:
+; WASM32: .functype test_ctselect_v4i32_args (i32, v128, v128) -> (v128)
+; WASM32-NEXT: .local v128
+; WASM32-NEXT: # %bb.0:
+; WASM32-NEXT: local.get 0
+; WASM32-NEXT: i32x4.splat
+; WASM32-NEXT: i32.const 31
+; WASM32-NEXT: i32x4.shl
+; WASM32-NEXT: i32.const 31
+; WASM32-NEXT: i32x4.shr_s
+; WASM32-NEXT: local.tee 3
+; WASM32-NEXT: local.get 1
+; WASM32-NEXT: v128.and
+; WASM32-NEXT: local.get 2
+; WASM32-NEXT: local.get 3
+; WASM32-NEXT: v128.andnot
+; WASM32-NEXT: v128.or
+; WASM32-NEXT: # fallthrough-return
+;
+; WASM64-LABEL: test_ctselect_v4i32_args:
+; WASM64: .functype test_ctselect_v4i32_args (i32, v128, v128) -> (v128)
+; WASM64-NEXT: .local v128
+; WASM64-NEXT: # %bb.0:
+; WASM64-NEXT: local.get 0
+; WASM64-NEXT: i32x4.splat
+; WASM64-NEXT: i32.const 31
+; WASM64-NEXT: i32x4.shl
+; WASM64-NEXT: i32.const 31
+; WASM64-NEXT: i32x4.shr_s
+; WASM64-NEXT: local.tee 3
+; WASM64-NEXT: local.get 1
+; WASM64-NEXT: v128.and
+; WASM64-NEXT: local.get 2
+; WASM64-NEXT: local.get 3
+; WASM64-NEXT: v128.andnot
+; WASM64-NEXT: v128.or
+; WASM64-NEXT: # fallthrough-return
+ %result = call <4 x i32> @llvm.ct.select.v4i32(i1 %cond, <4 x i32> %a, <4 x i32> %b)
+ ret <4 x i32> %result
+}
+
+; Test with multiple uses of result
+define <4 x i32> @test_ctselect_v4i32_multi_use(i1 %cond, <4 x i32> %a, <4 x i32> %b) {
+; WASM32-LABEL: test_ctselect_v4i32_multi_use:
+; WASM32: .functype test_ctselect_v4i32_multi_use (i32, v128, v128) -> (v128)
+; WASM32-NEXT: .local v128
+; WASM32-NEXT: # %bb.0:
+; WASM32-NEXT: local.get 0
+; WASM32-NEXT: i32x4.splat
+; WASM32-NEXT: i32.const 31
+; WASM32-NEXT: i32x4.shl
+; WASM32-NEXT: i32.const 31
+; WASM32-NEXT: i32x4.shr_s
+; WASM32-NEXT: local.tee 3
+; WASM32-NEXT: local.get 1
+; WASM32-NEXT: v128.and
+; WASM32-NEXT: local.get 2
+; WASM32-NEXT: local.get 3
+; WASM32-NEXT: v128.andnot
+; WASM32-NEXT: v128.or
+; WASM32-NEXT: local.tee 1
+; WASM32-NEXT: local.get 1
+; WASM32-NEXT: i32x4.add
+; WASM32-NEXT: # fallthrough-return
+;
+; WASM64-LABEL: test_ctselect_v4i32_multi_use:
+; WASM64: .functype test_ctselect_v4i32_multi_use (i32, v128, v128) -> (v128)
+; WASM64-NEXT: .local v128
+; WASM64-NEXT: # %bb.0:
+; WASM64-NEXT: local.get 0
+; WASM64-NEXT: i32x4.splat
+; WASM64-NEXT: i32.const 31
+; WASM64-NEXT: i32x4.shl
+; WASM64-NEXT: i32.const 31
+; WASM64-NEXT: i32x4.shr_s
+; WASM64-NEXT: local.tee 3
+; WASM64-NEXT: local.get 1
+; WASM64-NEXT: v128.and
+; WASM64-NEXT: local.get 2
+; WASM64-NEXT: local.get 3
+; WASM64-NEXT: v128.andnot
+; WASM64-NEXT: v128.or
+; WASM64-NEXT: local.tee 1
+; WASM64-NEXT: local.get 1
+; WASM64-NEXT: i32x4.add
+; WASM64-NEXT: # fallthrough-return
+ %sel = call <4 x i32> @llvm.ct.select.v4i32(i1 %cond, <4 x i32> %a, <4 x i32> %b)
+ %add = add <4 x i32> %sel, %sel ; Use result twice
+ ret <4 x i32> %add
+}
+
+; Test byte vector with operations
+define <16 x i8> @test_ctselect_v16i8_ops(i1 %cond, <16 x i8> %x, <16 x i8> %y) {
+; WASM32-LABEL: test_ctselect_v16i8_ops:
+; WASM32: .functype test_ctselect_v16i8_ops (i32, v128, v128) -> (v128)
+; WASM32-NEXT: .local v128
+; WASM32-NEXT: # %bb.0:
+; WASM32-NEXT: local.get 0
+; WASM32-NEXT: i8x16.splat
+; WASM32-NEXT: i32.const 7
+; WASM32-NEXT: i8x16.shl
+; WASM32-NEXT: i32.const 7
+; WASM32-NEXT: i8x16.shr_s
+; WASM32-NEXT: local.tee 3
+; WASM32-NEXT: local.get 1
+; WASM32-NEXT: local.get 2
+; WASM32-NEXT: v128.xor
+; WASM32-NEXT: v128.and
+; WASM32-NEXT: local.get 1
+; WASM32-NEXT: local.get 2
+; WASM32-NEXT: v128.and
+; WASM32-NEXT: local.get 3
+; WASM32-NEXT: v128.andnot
+; WASM32-NEXT: v128.or
+; WASM32-NEXT: # fallthrough-return
+;
+; WASM64-LABEL: test_ctselect_v16i8_ops:
+; WASM64: .functype test_ctselect_v16i8_ops (i32, v128, v128) -> (v128)
+; WASM64-NEXT: .local v128
+; WASM64-NEXT: # %bb.0:
+; WASM64-NEXT: local.get 0
+; WASM64-NEXT: i8x16.splat
+; WASM64-NEXT: i32.const 7
+; WASM64-NEXT: i8x16.shl
+; WASM64-NEXT: i32.const 7
+; WASM64-NEXT: i8x16.shr_s
+; WASM64-NEXT: local.tee 3
+; WASM64-NEXT: local.get 1
+; WASM64-NEXT: local.get 2
+; WASM64-NEXT: v128.xor
+; WASM64-NEXT: v128.and
+; WASM64-NEXT: local.get 1
+; WASM64-NEXT: local.get 2
+; WASM64-NEXT: v128.and
+; WASM64-NEXT: local.get 3
+; WASM64-NEXT: v128.andnot
+; WASM64-NEXT: v128.or
+; WASM64-NEXT: # fallthrough-return
+ %xor = xor <16 x i8> %x, %y
+ %and = and <16 x i8> %x, %y
+ %result = call <16 x i8> @llvm.ct.select.v16i8(i1 %cond, <16 x i8> %xor, <16 x i8> %and)
+ ret <16 x i8> %result
+}
+
+declare <4 x i32> @llvm.ct.select.v4i32(i1, <4 x i32>, <4 x i32>)
+declare <8 x i16> @llvm.ct.select.v8i16(i1, <8 x i16>, <8 x i16>)
+declare <16 x i8> @llvm.ct.select.v16i8(i1, <16 x i8>, <16 x i8>)
+declare <2 x i64> @llvm.ct.select.v2i64(i1, <2 x i64>, <2 x i64>)
+declare <4 x float> @llvm.ct.select.v4f32(i1, <4 x float>, <4 x float>)
+declare <2 x double> @llvm.ct.select.v2f64(i1, <2 x double>, <2 x double>)
diff --git a/llvm/test/CodeGen/WebAssembly/ctselect-fallback.ll b/llvm/test/CodeGen/WebAssembly/ctselect-fallback.ll
new file mode 100644
index 0000000000000..bd318960536df
--- /dev/null
+++ b/llvm/test/CodeGen/WebAssembly/ctselect-fallback.ll
@@ -0,0 +1,552 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 5
+; RUN: llc < %s -mtriple=wasm32-unknown-unknown -O3 -filetype=asm | FileCheck %s --check-prefix=W32
+; RUN: llc < %s -mtriple=wasm64-unknown-unknown -O3 -filetype=asm | FileCheck %s --check-prefix=W64
+
+; Test basic ct.select functionality for scalar types
+define i8 @test_ctselect_i8(i1 %cond, i8 %a, i8 %b) {
+; W32-LABEL: test_ctselect_i8:
+; W32: .functype test_ctselect_i8 (i32, i32, i32) -> (i32)
+; W32-NEXT: # %bb.0:
+; W32-NEXT: local.get 1
+; W32-NEXT: local.get 2
+; W32-NEXT: i32.xor
+; W32-NEXT: i32.const 0
+; W32-NEXT: local.get 0
+; W32-NEXT: i32.const 1
+; W32-NEXT: i32.and
+; W32-NEXT: i32.sub
+; W32-NEXT: i32.and
+; W32-NEXT: local.get 2
+; W32-NEXT: i32.xor
+; W32-NEXT: # fallthrough-return
+;
+; W64-LABEL: test_ctselect_i8:
+; W64: .functype test_ctselect_i8 (i32, i32, i32) -> (i32)
+; W64-NEXT: # %bb.0:
+; W64-NEXT: local.get 1
+; W64-NEXT: local.get 2
+; W64-NEXT: i32.xor
+; W64-NEXT: i32.const 0
+; W64-NEXT: local.get 0
+; W64-NEXT: i32.const 1
+; W64-NEXT: i32.and
+; W64-NEXT: i32.sub
+; W64-NEXT: i32.and
+; W64-NEXT: local.get 2
+; W64-NEXT: i32.xor
+; W64-NEXT: # fallthrough-return
+ %result = call i8 @llvm.ct.select.i8(i1 %cond, i8 %a, i8 %b)
+ ret i8 %result
+}
+
+define i16 @test_ctselect_i16(i1 %cond, i16 %a, i16 %b) {
+; W32-LABEL: test_ctselect_i16:
+; W32: .functype test_ctselect_i16 (i32, i32, i32) -> (i32)
+; W32-NEXT: # %bb.0:
+; W32-NEXT: local.get 1
+; W32-NEXT: local.get 2
+; W32-NEXT: i32.xor
+; W32-NEXT: i32.const 0
+; W32-NEXT: local.get 0
+; W32-NEXT: i32.const 1
+; W32-NEXT: i32.and
+; W32-NEXT: i32.sub
+; W32-NEXT: i32.and
+; W32-NEXT: local.get 2
+; W32-NEXT: i32.xor
+; W32-NEXT: # fallthrough-return
+;
+; W64-LABEL: test_ctselect_i16:
+; W64: .functype test_ctselect_i16 (i32, i32, i32) -> (i32)
+; W64-NEXT: # %bb.0:
+; W64-NEXT: local.get 1
+; W64-NEXT: local.get 2
+; W64-NEXT: i32.xor
+; W64-NEXT: i32.const 0
+; W64-NEXT: local.get 0
+; W64-NEXT: i32.const 1
+; W64-NEXT: i32.and
+; W64-NEXT: i32.sub
+; W64-NEXT: i32.and
+; W64-NEXT: local.get 2
+; W64-NEXT: i32.xor
+; W64-NEXT: # fallthrough-return
+ %result = call i16 @llvm.ct.select.i16(i1 %cond, i16 %a, i16 %b)
+ ret i16 %result
+}
+
+define i32 @test_ctselect_i32(i1 %cond, i32 %a, i32 %b) {
+; W32-LABEL: test_ctselect_i32:
+; W32: .functype test_ctselect_i32 (i32, i32, i32) -> (i32)
+; W32-NEXT: # %bb.0:
+; W32-NEXT: i32.const 0
+; W32-NEXT: local.get 0
+; W32-NEXT: i32.const 1
+; W32-NEXT: i32.and
+; W32-NEXT: local.tee 0
+; W32-NEXT: i32.sub
+; W32-NEXT: local.get 1
+; W32-NEXT: i32.and
+; W32-NEXT: local.get 0
+; W32-NEXT: i32.const -1
+; W32-NEXT: i32.add
+; W32-NEXT: local.get 2
+; W32-NEXT: i32.and
+; W32-NEXT: i32.or
+; W32-NEXT: # fallthrough-return
+;
+; W64-LABEL: test_ctselect_i32:
+; W64: .functype test_ctselect_i32 (i32, i32, i32) -> (i32)
+; W64-NEXT: # %bb.0:
+; W64-NEXT: i32.const 0
+; W64-NEXT: local.get 0
+; W64-NEXT: i32.const 1
+; W64-NEXT: i32.and
+; W64-NEXT: local.tee 0
+; W64-NEXT: i32.sub
+; W64-NEXT: local.get 1
+; W64-NEXT: i32.and
+; W64-NEXT: local.get 0
+; W64-NEXT: i32.const -1
+; W64-NEXT: i32.add
+; W64-NEXT: local.get 2
+; W64-NEXT: i32.and
+; W64-NEXT: i32.or
+; W64-NEXT: # fallthrough-return
+ %result = call i32 @llvm.ct.select.i32(i1 %cond, i32 %a, i32 %b)
+ ret i32 %result
+}
+
+define i64 @test_ctselect_i64(i1 %cond, i64 %a, i64 %b) {
+; W32-LABEL: test_ctselect_i64:
+; W32: .functype test_ctselect_i64 (i32, i64, i64) -> (i64)
+; W32-NEXT: .local i64
+; W32-NEXT: # %bb.0:
+; W32-NEXT: i64.const 0
+; W32-NEXT: local.get 0
+; W32-NEXT: i64.extend_i32_u
+; W32-NEXT: i64.const 1
+; W32-NEXT: i64.and
+; W32-NEXT: local.tee 3
+; W32-NEXT: i64.sub
+; W32-NEXT: local.get 1
+; W32-NEXT: i64.and
+; W32-NEXT: local.get 3
+; W32-NEXT: i64.const -1
+; W32-NEXT: i64.add
+; W32-NEXT: local.get 2
+; W32-NEXT: i64.and
+; W32-NEXT: i64.or
+; W32-NEXT: # fallthrough-return
+;
+; W64-LABEL: test_ctselect_i64:
+; W64: .functype test_ctselect_i64 (i32, i64, i64) -> (i64)
+; W64-NEXT: .local i64
+; W64-NEXT: # %bb.0:
+; W64-NEXT: i64.const 0
+; W64-NEXT: local.get 0
+; W64-NEXT: i64.extend_i32_u
+; W64-NEXT: i64.const 1
+; W64-NEXT: i64.and
+; W64-NEXT: local.tee 3
+; W64-NEXT: i64.sub
+; W64-NEXT: local.get 1
+; W64-NEXT: i64.and
+; W64-NEXT: local.get 3
+; W64-NEXT: i64.const -1
+; W64-NEXT: i64.add
+; W64-NEXT: local.get 2
+; W64-NEXT: i64.and
+; W64-NEXT: i64.or
+; W64-NEXT: # fallthrough-return
+ %result = call i64 @llvm.ct.select.i64(i1 %cond, i64 %a, i64 %b)
+ ret i64 %result
+}
+
+define ptr @test_ctselect_ptr(i1 %cond, ptr %a, ptr %b) {
+; W32-LABEL: test_ctselect_ptr:
+; W32: .functype test_ctselect_ptr (i32, i32, i32) -> (i32)
+; W32-NEXT: # %bb.0:
+; W32-NEXT: i32.const 0
+; W32-NEXT: local.get 0
+; W32-NEXT: i32.const 1
+; W32-NEXT: i32.and
+; W32-NEXT: local.tee 0
+; W32-NEXT: i32.sub
+; W32-NEXT: local.get 1
+; W32-NEXT: i32.and
+; W32-NEXT: local.get 0
+; W32-NEXT: i32.const -1
+; W32-NEXT: i32.add
+; W32-NEXT: local.get 2
+; W32-NEXT: i32.and
+; W32-NEXT: i32.or
+; W32-NEXT: # fallthrough-return
+;
+; W64-LABEL: test_ctselect_ptr:
+; W64: .functype test_ctselect_ptr (i32, i64, i64) -> (i64)
+; W64-NEXT: .local i64
+; W64-NEXT: # %bb.0:
+; W64-NEXT: i64.const 0
+; W64-NEXT: local.get 0
+; W64-NEXT: i64.extend_i32_u
+; W64-NEXT: i64.const 1
+; W64-NEXT: i64.and
+; W64-NEXT: local.tee 3
+; W64-NEXT: i64.sub
+; W64-NEXT: local.get 1
+; W64-NEXT: i64.and
+; W64-NEXT: local.get 3
+; W64-NEXT: i64.const -1
+; W64-NEXT: i64.add
+; W64-NEXT: local.get 2
+; W64-NEXT: i64.and
+; W64-NEXT: i64.or
+; W64-NEXT: # fallthrough-return
+ %result = call ptr @llvm.ct.select.p0(i1 %cond, ptr %a, ptr %b)
+ ret ptr %result
+}
+
+; Test with constant conditions
+define i32 @test_ctselect_const_true(i32 %a, i32 %b) {
+; W32-LABEL: test_ctselect_const_true:
+; W32: .functype test_ctselect_const_true (i32, i32) -> (i32)
+; W32-NEXT: # %bb.0:
+; W32-NEXT: local.get 0
+; W32-NEXT: # fallthrough-return
+;
+; W64-LABEL: test_ctselect_const_true:
+; W64: .functype test_ctselect_const_true (i32, i32) -> (i32)
+; W64-NEXT: # %bb.0:
+; W64-NEXT: local.get 0
+; W64-NEXT: # fallthrough-return
+ %result = call i32 @llvm.ct.select.i32(i1 true, i32 %a, i32 %b)
+ ret i32 %result
+}
+
+define i32 @test_ctselect_const_false(i32 %a, i32 %b) {
+; W32-LABEL: test_ctselect_const_false:
+; W32: .functype test_ctselect_const_false (i32, i32) -> (i32)
+; W32-NEXT: # %bb.0:
+; W32-NEXT: i32.const 0
+; W32-NEXT: local.get 1
+; W32-NEXT: i32.or
+; W32-NEXT: # fallthrough-return
+;
+; W64-LABEL: test_ctselect_const_false:
+; W64: .functype test_ctselect_const_false (i32, i32) -> (i32)
+; W64-NEXT: # %bb.0:
+; W64-NEXT: i32.const 0
+; W64-NEXT: local.get 1
+; W64-NEXT: i32.or
+; W64-NEXT: # fallthrough-return
+ %result = call i32 @llvm.ct.select.i32(i1 false, i32 %a, i32 %b)
+ ret i32 %result
+}
+
+; Test with comparison conditions
+define i32 @test_ctselect_icmp_eq(i32 %x, i32 %y, i32 %a, i32 %b) {
+; W32-LABEL: test_ctselect_icmp_eq:
+; W32: .functype test_ctselect_icmp_eq (i32, i32, i32, i32) -> (i32)
+; W32-NEXT: # %bb.0:
+; W32-NEXT: i32.const -1
+; W32-NEXT: i32.const 0
+; W32-NEXT: local.get 0
+; W32-NEXT: local.get 1
+; W32-NEXT: i32.eq
+; W32-NEXT: i32.select
+; W32-NEXT: local.tee 1
+; W32-NEXT: local.get 2
+; W32-NEXT: i32.and
+; W32-NEXT: local.get 1
+; W32-NEXT: i32.const -1
+; W32-NEXT: i32.xor
+; W32-NEXT: local.get 3
+; W32-NEXT: i32.and
+; W32-NEXT: i32.or
+; W32-NEXT: # fallthrough-return
+;
+; W64-LABEL: test_ctselect_icmp_eq:
+; W64: .functype test_ctselect_icmp_eq (i32, i32, i32, i32) -> (i32)
+; W64-NEXT: # %bb.0:
+; W64-NEXT: i32.const -1
+; W64-NEXT: i32.const 0
+; W64-NEXT: local.get 0
+; W64-NEXT: local.get 1
+; W64-NEXT: i32.eq
+; W64-NEXT: i32.select
+; W64-NEXT: local.tee 1
+; W64-NEXT: local.get 2
+; W64-NEXT: i32.and
+; W64-NEXT: local.get 1
+; W64-NEXT: i32.const -1
+; W64-NEXT: i32.xor
+; W64-NEXT: local.get 3
+; W64-NEXT: i32.and
+; W64-NEXT: i32.or
+; W64-NEXT: # fallthrough-return
+ %cond = icmp eq i32 %x, %y
+ %result = call i32 @llvm.ct.select.i32(i1 %cond, i32 %a, i32 %b)
+ ret i32 %result
+}
+
+define i32 @test_ctselect_icmp_ne(i32 %x, i32 %y, i32 %a, i32 %b) {
+; W32-LABEL: test_ctselect_icmp_ne:
+; W32: .functype test_ctselect_icmp_ne (i32, i32, i32, i32) -> (i32)
+; W32-NEXT: # %bb.0:
+; W32-NEXT: i32.const -1
+; W32-NEXT: i32.const 0
+; W32-NEXT: local.get 0
+; W32-NEXT: local.get 1
+; W32-NEXT: i32.ne
+; W32-NEXT: i32.select
+; W32-NEXT: local.tee 1
+; W32-NEXT: local.get 2
+; W32-NEXT: i32.and
+; W32-NEXT: local.get 1
+; W32-NEXT: i32.const -1
+; W32-NEXT: i32.xor
+; W32-NEXT: local.get 3
+; W32-NEXT: i32.and
+; W32-NEXT: i32.or
+; W32-NEXT: # fallthrough-return
+;
+; W64-LABEL: test_ctselect_icmp_ne:
+; W64: .functype test_ctselect_icmp_ne (i32, i32, i32, i32) -> (i32)
+; W64-NEXT: # %bb.0:
+; W64-NEXT: i32.const -1
+; W64-NEXT: i32.const 0
+; W64-NEXT: local.get 0
+; W64-NEXT: local.get 1
+; W64-NEXT: i32.ne
+; W64-NEXT: i32.select
+; W64-NEXT: local.tee 1
+; W64-NEXT: local.get 2
+; W64-NEXT: i32.and
+; W64-NEXT: local.get 1
+; W64-NEXT: i32.const -1
+; W64-NEXT: i32.xor
+; W64-NEXT: local.get 3
+; W64-NEXT: i32.and
+; W64-NEXT: i32.or
+; W64-NEXT: # fallthrough-return
+ %cond = icmp ne i32 %x, %y
+ %result = call i32 @llvm.ct.select.i32(i1 %cond, i32 %a, i32 %b)
+ ret i32 %result
+}
+
+define i32 @test_ctselect_icmp_slt(i32 %x, i32 %y, i32 %a, i32 %b) {
+; W32-LABEL: test_ctselect_icmp_slt:
+; W32: .functype test_ctselect_icmp_slt (i32, i32, i32, i32) -> (i32)
+; W32-NEXT: # %bb.0:
+; W32-NEXT: i32.const -1
+; W32-NEXT: i32.const 0
+; W32-NEXT: local.get 0
+; W32-NEXT: local.get 1
+; W32-NEXT: i32.lt_s
+; W32-NEXT: i32.select
+; W32-NEXT: local.tee 1
+; W32-NEXT: local.get 2
+; W32-NEXT: i32.and
+; W32-NEXT: local.get 1
+; W32-NEXT: i32.const -1
+; W32-NEXT: i32.xor
+; W32-NEXT: local.get 3
+; W32-NEXT: i32.and
+; W32-NEXT: i32.or
+; W32-NEXT: # fallthrough-return
+;
+; W64-LABEL: test_ctselect_icmp_slt:
+; W64: .functype test_ctselect_icmp_slt (i32, i32, i32, i32) -> (i32)
+; W64-NEXT: # %bb.0:
+; W64-NEXT: i32.const -1
+; W64-NEXT: i32.const 0
+; W64-NEXT: local.get 0
+; W64-NEXT: local.get 1
+; W64-NEXT: i32.lt_s
+; W64-NEXT: i32.select
+; W64-NEXT: local.tee 1
+; W64-NEXT: local.get 2
+; W64-NEXT: i32.and
+; W64-NEXT: local.get 1
+; W64-NEXT: i32.const -1
+; W64-NEXT: i32.xor
+; W64-NEXT: local.get 3
+; W64-NEXT: i32.and
+; W64-NEXT: i32.or
+; W64-NEXT: # fallthrough-return
+ %cond = icmp slt i32 %x, %y
+ %result = call i32 @llvm.ct.select.i32(i1 %cond, i32 %a, i32 %b)
+ ret i32 %result
+}
+
+define i32 @test_ctselect_icmp_ult(i32 %x, i32 %y, i32 %a, i32 %b) {
+; W32-LABEL: test_ctselect_icmp_ult:
+; W32: .functype test_ctselect_icmp_ult (i32, i32, i32, i32) -> (i32)
+; W32-NEXT: # %bb.0:
+; W32-NEXT: i32.const -1
+; W32-NEXT: i32.const 0
+; W32-NEXT: local.get 0
+; W32-NEXT: local.get 1
+; W32-NEXT: i32.lt_u
+; W32-NEXT: i32.select
+; W32-NEXT: local.tee 1
+; W32-NEXT: local.get 2
+; W32-NEXT: i32.and
+; W32-NEXT: local.get 1
+; W32-NEXT: i32.const -1
+; W32-NEXT: i32.xor
+; W32-NEXT: local.get 3
+; W32-NEXT: i32.and
+; W32-NEXT: i32.or
+; W32-NEXT: # fallthrough-return
+;
+; W64-LABEL: test_ctselect_icmp_ult:
+; W64: .functype test_ctselect_icmp_ult (i32, i32, i32, i32) -> (i32)
+; W64-NEXT: # %bb.0:
+; W64-NEXT: i32.const -1
+; W64-NEXT: i32.const 0
+; W64-NEXT: local.get 0
+; W64-NEXT: local.get 1
+; W64-NEXT: i32.lt_u
+; W64-NEXT: i32.select
+; W64-NEXT: local.tee 1
+; W64-NEXT: local.get 2
+; W64-NEXT: i32.and
+; W64-NEXT: local.get 1
+; W64-NEXT: i32.const -1
+; W64-NEXT: i32.xor
+; W64-NEXT: local.get 3
+; W64-NEXT: i32.and
+; W64-NEXT: i32.or
+; W64-NEXT: # fallthrough-return
+ %cond = icmp ult i32 %x, %y
+ %result = call i32 @llvm.ct.select.i32(i1 %cond, i32 %a, i32 %b)
+ ret i32 %result
+}
+
+; Test with memory operands
+define i32 @test_ctselect_load(i1 %cond, ptr %p1, ptr %p2) {
+; W32-LABEL: test_ctselect_load:
+; W32: .functype test_ctselect_load (i32, i32, i32) -> (i32)
+; W32-NEXT: # %bb.0:
+; W32-NEXT: i32.const 0
+; W32-NEXT: local.get 0
+; W32-NEXT: i32.const 1
+; W32-NEXT: i32.and
+; W32-NEXT: local.tee 0
+; W32-NEXT: i32.sub
+; W32-NEXT: local.get 1
+; W32-NEXT: i32.load 0
+; W32-NEXT: i32.and
+; W32-NEXT: local.get 0
+; W32-NEXT: i32.const -1
+; W32-NEXT: i32.add
+; W32-NEXT: local.get 2
+; W32-NEXT: i32.load 0
+; W32-NEXT: i32.and
+; W32-NEXT: i32.or
+; W32-NEXT: # fallthrough-return
+;
+; W64-LABEL: test_ctselect_load:
+; W64: .functype test_ctselect_load (i32, i64, i64) -> (i32)
+; W64-NEXT: # %bb.0:
+; W64-NEXT: i32.const 0
+; W64-NEXT: local.get 0
+; W64-NEXT: i32.const 1
+; W64-NEXT: i32.and
+; W64-NEXT: local.tee 0
+; W64-NEXT: i32.sub
+; W64-NEXT: local.get 1
+; W64-NEXT: i32.load 0
+; W64-NEXT: i32.and
+; W64-NEXT: local.get 0
+; W64-NEXT: i32.const -1
+; W64-NEXT: i32.add
+; W64-NEXT: local.get 2
+; W64-NEXT: i32.load 0
+; W64-NEXT: i32.and
+; W64-NEXT: i32.or
+; W64-NEXT: # fallthrough-return
+ %a = load i32, ptr %p1
+ %b = load i32, ptr %p2
+ %result = call i32 @llvm.ct.select.i32(i1 %cond, i32 %a, i32 %b)
+ ret i32 %result
+}
+
+; Test nested ctselect calls
+define i32 @test_ctselect_nested(i1 %cond1, i1 %cond2, i32 %a, i32 %b, i32 %c) {
+; W32-LABEL: test_ctselect_nested:
+; W32: .functype test_ctselect_nested (i32, i32, i32, i32, i32) -> (i32)
+; W32-NEXT: # %bb.0:
+; W32-NEXT: i32.const 0
+; W32-NEXT: local.get 0
+; W32-NEXT: i32.const 1
+; W32-NEXT: i32.and
+; W32-NEXT: local.tee 0
+; W32-NEXT: i32.sub
+; W32-NEXT: i32.const 0
+; W32-NEXT: local.get 1
+; W32-NEXT: i32.const 1
+; W32-NEXT: i32.and
+; W32-NEXT: local.tee 1
+; W32-NEXT: i32.sub
+; W32-NEXT: local.get 2
+; W32-NEXT: i32.and
+; W32-NEXT: local.get 1
+; W32-NEXT: i32.const -1
+; W32-NEXT: i32.add
+; W32-NEXT: local.get 3
+; W32-NEXT: i32.and
+; W32-NEXT: i32.or
+; W32-NEXT: i32.and
+; W32-NEXT: local.get 0
+; W32-NEXT: i32.const -1
+; W32-NEXT: i32.add
+; W32-NEXT: local.get 4
+; W32-NEXT: i32.and
+; W32-NEXT: i32.or
+; W32-NEXT: # fallthrough-return
+;
+; W64-LABEL: test_ctselect_nested:
+; W64: .functype test_ctselect_nested (i32, i32, i32, i32, i32) -> (i32)
+; W64-NEXT: # %bb.0:
+; W64-NEXT: i32.const 0
+; W64-NEXT: local.get 0
+; W64-NEXT: i32.const 1
+; W64-NEXT: i32.and
+; W64-NEXT: local.tee 0
+; W64-NEXT: i32.sub
+; W64-NEXT: i32.const 0
+; W64-NEXT: local.get 1
+; W64-NEXT: i32.const 1
+; W64-NEXT: i32.and
+; W64-NEXT: local.tee 1
+; W64-NEXT: i32.sub
+; W64-NEXT: local.get 2
+; W64-NEXT: i32.and
+; W64-NEXT: local.get 1
+; W64-NEXT: i32.const -1
+; W64-NEXT: i32.add
+; W64-NEXT: local.get 3
+; W64-NEXT: i32.and
+; W64-NEXT: i32.or
+; W64-NEXT: i32.and
+; W64-NEXT: local.get 0
+; W64-NEXT: i32.const -1
+; W64-NEXT: i32.add
+; W64-NEXT: local.get 4
+; W64-NEXT: i32.and
+; W64-NEXT: i32.or
+; W64-NEXT: # fallthrough-return
+ %inner = call i32 @llvm.ct.select.i32(i1 %cond2, i32 %a, i32 %b)
+ %result = call i32 @llvm.ct.select.i32(i1 %cond1, i32 %inner, i32 %c)
+ ret i32 %result
+}
+
+; Declare the intrinsics
+declare i8 @llvm.ct.select.i8(i1, i8, i8)
+declare i16 @llvm.ct.select.i16(i1, i16, i16)
+declare i32 @llvm.ct.select.i32(i1, i32, i32)
+declare i64 @llvm.ct.select.i64(i1, i64, i64)
+declare ptr @llvm.ct.select.p0(i1, ptr, ptr)
diff --git a/llvm/test/CodeGen/WebAssembly/ctselect-side-effects.ll b/llvm/test/CodeGen/WebAssembly/ctselect-side-effects.ll
new file mode 100644
index 0000000000000..5b20e892c64d2
--- /dev/null
+++ b/llvm/test/CodeGen/WebAssembly/ctselect-side-effects.ll
@@ -0,0 +1,226 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 5
+; RUN: llc < %s -mtriple=wasm32-unknown-unknown -O3 -filetype=asm | FileCheck %s --check-prefix=W32
+; RUN: llc < %s -mtriple=wasm64-unknown-unknown -O3 -filetype=asm | FileCheck %s --check-prefix=W64
+
+; Test 1: Basic optimizations should still work
+define i32 @test_basic_opts(i32 %x) {
+; W32-LABEL: test_basic_opts:
+; W32: .functype test_basic_opts (i32) -> (i32)
+; W32-NEXT: # %bb.0:
+; W32-NEXT: local.get 0
+; W32-NEXT: # fallthrough-return
+;
+; W64-LABEL: test_basic_opts:
+; W64: .functype test_basic_opts (i32) -> (i32)
+; W64-NEXT: # %bb.0:
+; W64-NEXT: local.get 0
+; W64-NEXT: # fallthrough-return
+ %a = or i32 %x, 0 ; Should eliminate
+ %b = and i32 %a, -1 ; Should eliminate
+ %c = xor i32 %b, 0 ; Should eliminate
+ ret i32 %c
+}
+
+; Test 2: Constant folding should work
+define i32 @test_constant_fold() {
+; W32-LABEL: test_constant_fold:
+; W32: .functype test_constant_fold () -> (i32)
+; W32-NEXT: # %bb.0:
+; W32-NEXT: i32.const 0
+; W32-NEXT: # fallthrough-return
+;
+; W64-LABEL: test_constant_fold:
+; W64: .functype test_constant_fold () -> (i32)
+; W64-NEXT: # %bb.0:
+; W64-NEXT: i32.const 0
+; W64-NEXT: # fallthrough-return
+ %a = xor i32 -1, -1 ; Should fold to 0
+ ret i32 %a
+}
+
+; Test 3: Protected pattern should NOT have branches
+define i32 @test_protected_no_branch(i1 %cond, i32 %a, i32 %b) {
+; W32-LABEL: test_protected_no_branch:
+; W32: .functype test_protected_no_branch (i32, i32, i32) -> (i32)
+; W32-NEXT: # %bb.0:
+; W32-NEXT: i32.const 0
+; W32-NEXT: local.get 0
+; W32-NEXT: i32.const 1
+; W32-NEXT: i32.and
+; W32-NEXT: local.tee 0
+; W32-NEXT: i32.sub
+; W32-NEXT: local.get 1
+; W32-NEXT: i32.and
+; W32-NEXT: local.get 0
+; W32-NEXT: i32.const -1
+; W32-NEXT: i32.add
+; W32-NEXT: local.get 2
+; W32-NEXT: i32.and
+; W32-NEXT: i32.or
+; W32-NEXT: # fallthrough-return
+;
+; W64-LABEL: test_protected_no_branch:
+; W64: .functype test_protected_no_branch (i32, i32, i32) -> (i32)
+; W64-NEXT: # %bb.0:
+; W64-NEXT: i32.const 0
+; W64-NEXT: local.get 0
+; W64-NEXT: i32.const 1
+; W64-NEXT: i32.and
+; W64-NEXT: local.tee 0
+; W64-NEXT: i32.sub
+; W64-NEXT: local.get 1
+; W64-NEXT: i32.and
+; W64-NEXT: local.get 0
+; W64-NEXT: i32.const -1
+; W64-NEXT: i32.add
+; W64-NEXT: local.get 2
+; W64-NEXT: i32.and
+; W64-NEXT: i32.or
+; W64-NEXT: # fallthrough-return
+ %result = call i32 @llvm.ct.select.i32(i1 %cond, i32 %a, i32 %b)
+ ret i32 %result
+}
+
+; Test 4: Explicit branch should still generate branches
+define i32 @test_explicit_branch(i1 %cond, i32 %a, i32 %b) {
+; W32-LABEL: test_explicit_branch:
+; W32: .functype test_explicit_branch (i32, i32, i32) -> (i32)
+; W32-NEXT: # %bb.0:
+; W32-NEXT: block
+; W32-NEXT: local.get 0
+; W32-NEXT: i32.const 1
+; W32-NEXT: i32.and
+; W32-NEXT: i32.eqz
+; W32-NEXT: br_if 0 # 0: down to label0
+; W32-NEXT: # %bb.1: # %true
+; W32-NEXT: local.get 1
+; W32-NEXT: return
+; W32-NEXT: .LBB3_2: # %false
+; W32-NEXT: end_block # label0:
+; W32-NEXT: local.get 2
+; W32-NEXT: # fallthrough-return
+;
+; W64-LABEL: test_explicit_branch:
+; W64: .functype test_explicit_branch (i32, i32, i32) -> (i32)
+; W64-NEXT: # %bb.0:
+; W64-NEXT: block
+; W64-NEXT: local.get 0
+; W64-NEXT: i32.const 1
+; W64-NEXT: i32.and
+; W64-NEXT: i32.eqz
+; W64-NEXT: br_if 0 # 0: down to label0
+; W64-NEXT: # %bb.1: # %true
+; W64-NEXT: local.get 1
+; W64-NEXT: return
+; W64-NEXT: .LBB3_2: # %false
+; W64-NEXT: end_block # label0:
+; W64-NEXT: local.get 2
+; W64-NEXT: # fallthrough-return
+ br i1 %cond, label %true, label %false
+true:
+ ret i32 %a
+false:
+ ret i32 %b
+}
+
+; Test 5: Regular select (not ct.select) - whatever wasm wants to do
+define i32 @test_regular_select(i1 %cond, i32 %a, i32 %b) {
+; W32-LABEL: test_regular_select:
+; W32: .functype test_regular_select (i32, i32, i32) -> (i32)
+; W32-NEXT: # %bb.0:
+; W32-NEXT: local.get 1
+; W32-NEXT: local.get 2
+; W32-NEXT: local.get 0
+; W32-NEXT: i32.const 1
+; W32-NEXT: i32.and
+; W32-NEXT: i32.select
+; W32-NEXT: # fallthrough-return
+;
+; W64-LABEL: test_regular_select:
+; W64: .functype test_regular_select (i32, i32, i32) -> (i32)
+; W64-NEXT: # %bb.0:
+; W64-NEXT: local.get 1
+; W64-NEXT: local.get 2
+; W64-NEXT: local.get 0
+; W64-NEXT: i32.const 1
+; W64-NEXT: i32.and
+; W64-NEXT: i32.select
+; W64-NEXT: # fallthrough-return
+ %result = select i1 %cond, i32 %a, i32 %b
+ ret i32 %result
+}
+
+; Test if XOR with all-ones still gets optimized
+define i32 @test_xor_all_ones() {
+; W32-LABEL: test_xor_all_ones:
+; W32: .functype test_xor_all_ones () -> (i32)
+; W32-NEXT: # %bb.0:
+; W32-NEXT: i32.const 0
+; W32-NEXT: # fallthrough-return
+;
+; W64-LABEL: test_xor_all_ones:
+; W64: .functype test_xor_all_ones () -> (i32)
+; W64-NEXT: # %bb.0:
+; W64-NEXT: i32.const 0
+; W64-NEXT: # fallthrough-return
+ %xor1 = xor i32 -1, -1 ; Should optimize to 0
+ ret i32 %xor1
+}
+
+define i32 @test_xor_same_value(i32 %x) {
+; W32-LABEL: test_xor_same_value:
+; W32: .functype test_xor_same_value (i32) -> (i32)
+; W32-NEXT: # %bb.0:
+; W32-NEXT: i32.const 0
+; W32-NEXT: # fallthrough-return
+;
+; W64-LABEL: test_xor_same_value:
+; W64: .functype test_xor_same_value (i32) -> (i32)
+; W64-NEXT: # %bb.0:
+; W64-NEXT: i32.const 0
+; W64-NEXT: # fallthrough-return
+ %xor2 = xor i32 %x, %x ; Should optimize to 0
+ ret i32 %xor2
+}
+
+define i32 @test_normal_ops(i32 %x) {
+; W32-LABEL: test_normal_ops:
+; W32: .functype test_normal_ops (i32) -> (i32)
+; W32-NEXT: # %bb.0:
+; W32-NEXT: local.get 0
+; W32-NEXT: # fallthrough-return
+;
+; W64-LABEL: test_normal_ops:
+; W64: .functype test_normal_ops (i32) -> (i32)
+; W64-NEXT: # %bb.0:
+; W64-NEXT: local.get 0
+; W64-NEXT: # fallthrough-return
+ %or1 = or i32 %x, 0
+ %and1 = and i32 %or1, -1
+ %xor1 = xor i32 %and1, 0
+ ret i32 %xor1
+}
+
+; This simulates what the reviewer is worried about
+define i32 @test_xor_with_const_operands() {
+; W32-LABEL: test_xor_with_const_operands:
+; W32: .functype test_xor_with_const_operands () -> (i32)
+; W32-NEXT: # %bb.0:
+; W32-NEXT: i32.const 0
+; W32-NEXT: # fallthrough-return
+;
+; W64-LABEL: test_xor_with_const_operands:
+; W64: .functype test_xor_with_const_operands () -> (i32)
+; W64-NEXT: # %bb.0:
+; W64-NEXT: i32.const 0
+; W64-NEXT: # fallthrough-return
+ %a = xor i32 -1, -1
+ %b = xor i32 0, 0
+ %c = xor i32 42, 42
+ %result = or i32 %a, %b
+ %final = or i32 %result, %c
+ ret i32 %final ; Should optimize to 0
+}
+
+declare i32 @llvm.ct.select.i32(i1, i32, i32)
+
>From 633cc16307190d9f3d4922c12e2c3dd47497a306 Mon Sep 17 00:00:00 2001
From: wizardengineer <juliuswoosebert at gmail.com>
Date: Sat, 7 Mar 2026 15:39:12 -0500
Subject: [PATCH 3/4] [LLVM][WebAssembly] Regenerate ct.select test CHECK lines
Update CHECK lines to match the new constant-time AND/OR/XOR expansion
from the CT_SELECT legalization fix.
---
.../ctselect-fallback-edge-cases.ll | 253 ++++-------
.../WebAssembly/ctselect-fallback-patterns.ll | 350 ++++++---------
.../WebAssembly/ctselect-fallback-vector.ll | 422 ++++++++----------
.../CodeGen/WebAssembly/ctselect-fallback.ll | 302 +++++--------
.../WebAssembly/ctselect-side-effects.ll | 26 +-
5 files changed, 542 insertions(+), 811 deletions(-)
diff --git a/llvm/test/CodeGen/WebAssembly/ctselect-fallback-edge-cases.ll b/llvm/test/CodeGen/WebAssembly/ctselect-fallback-edge-cases.ll
index b0f7f2807debd..99bfae3b13ed0 100644
--- a/llvm/test/CodeGen/WebAssembly/ctselect-fallback-edge-cases.ll
+++ b/llvm/test/CodeGen/WebAssembly/ctselect-fallback-edge-cases.ll
@@ -7,29 +7,33 @@ define i1 @test_ctselect_i1(i1 %cond, i1 %a, i1 %b) {
; W32-LABEL: test_ctselect_i1:
; W32: .functype test_ctselect_i1 (i32, i32, i32) -> (i32)
; W32-NEXT: # %bb.0:
-; W32-NEXT: local.get 0
+; W32-NEXT: local.get 2
; W32-NEXT: local.get 1
-; W32-NEXT: i32.and
+; W32-NEXT: local.get 2
+; W32-NEXT: i32.xor
+; W32-NEXT: i32.const 0
; W32-NEXT: local.get 0
; W32-NEXT: i32.const 1
-; W32-NEXT: i32.xor
-; W32-NEXT: local.get 2
; W32-NEXT: i32.and
-; W32-NEXT: i32.or
+; W32-NEXT: i32.sub
+; W32-NEXT: i32.and
+; W32-NEXT: i32.xor
; W32-NEXT: # fallthrough-return
;
; W64-LABEL: test_ctselect_i1:
; W64: .functype test_ctselect_i1 (i32, i32, i32) -> (i32)
; W64-NEXT: # %bb.0:
-; W64-NEXT: local.get 0
+; W64-NEXT: local.get 2
; W64-NEXT: local.get 1
-; W64-NEXT: i32.and
+; W64-NEXT: local.get 2
+; W64-NEXT: i32.xor
+; W64-NEXT: i32.const 0
; W64-NEXT: local.get 0
; W64-NEXT: i32.const 1
-; W64-NEXT: i32.xor
-; W64-NEXT: local.get 2
; W64-NEXT: i32.and
-; W64-NEXT: i32.or
+; W64-NEXT: i32.sub
+; W64-NEXT: i32.and
+; W64-NEXT: i32.xor
; W64-NEXT: # fallthrough-return
%result = call i1 @llvm.ct.select.i1(i1 %cond, i1 %a, i1 %b)
ret i1 %result
@@ -40,39 +44,21 @@ define i32 @test_ctselect_extremal_values(i1 %cond) {
; W32-LABEL: test_ctselect_extremal_values:
; W32: .functype test_ctselect_extremal_values (i32) -> (i32)
; W32-NEXT: # %bb.0:
-; W32-NEXT: i32.const 0
+; W32-NEXT: i32.const -2147483648
; W32-NEXT: local.get 0
; W32-NEXT: i32.const 1
; W32-NEXT: i32.and
-; W32-NEXT: local.tee 0
; W32-NEXT: i32.sub
-; W32-NEXT: i32.const 2147483647
-; W32-NEXT: i32.and
-; W32-NEXT: local.get 0
-; W32-NEXT: i32.const -1
-; W32-NEXT: i32.add
-; W32-NEXT: i32.const -2147483648
-; W32-NEXT: i32.and
-; W32-NEXT: i32.or
; W32-NEXT: # fallthrough-return
;
; W64-LABEL: test_ctselect_extremal_values:
; W64: .functype test_ctselect_extremal_values (i32) -> (i32)
; W64-NEXT: # %bb.0:
-; W64-NEXT: i32.const 0
+; W64-NEXT: i32.const -2147483648
; W64-NEXT: local.get 0
; W64-NEXT: i32.const 1
; W64-NEXT: i32.and
-; W64-NEXT: local.tee 0
; W64-NEXT: i32.sub
-; W64-NEXT: i32.const 2147483647
-; W64-NEXT: i32.and
-; W64-NEXT: local.get 0
-; W64-NEXT: i32.const -1
-; W64-NEXT: i32.add
-; W64-NEXT: i32.const -2147483648
-; W64-NEXT: i32.and
-; W64-NEXT: i32.or
; W64-NEXT: # fallthrough-return
%result = call i32 @llvm.ct.select.i32(i1 %cond, i32 2147483647, i32 -2147483648)
ret i32 %result
@@ -83,25 +69,25 @@ define ptr @test_ctselect_null_ptr(i1 %cond, ptr %ptr) {
; W32-LABEL: test_ctselect_null_ptr:
; W32: .functype test_ctselect_null_ptr (i32, i32) -> (i32)
; W32-NEXT: # %bb.0:
+; W32-NEXT: local.get 1
; W32-NEXT: i32.const 0
; W32-NEXT: local.get 0
; W32-NEXT: i32.const 1
; W32-NEXT: i32.and
; W32-NEXT: i32.sub
-; W32-NEXT: local.get 1
; W32-NEXT: i32.and
; W32-NEXT: # fallthrough-return
;
; W64-LABEL: test_ctselect_null_ptr:
; W64: .functype test_ctselect_null_ptr (i32, i64) -> (i64)
; W64-NEXT: # %bb.0:
+; W64-NEXT: local.get 1
; W64-NEXT: i64.const 0
; W64-NEXT: local.get 0
; W64-NEXT: i64.extend_i32_u
; W64-NEXT: i64.const 1
; W64-NEXT: i64.and
; W64-NEXT: i64.sub
-; W64-NEXT: local.get 1
; W64-NEXT: i64.and
; W64-NEXT: # fallthrough-return
%result = call ptr @llvm.ct.select.p0(i1 %cond, ptr %ptr, ptr null)
@@ -113,41 +99,34 @@ define ptr @test_ctselect_function_ptr(i1 %cond, ptr %func1, ptr %func2) {
; W32-LABEL: test_ctselect_function_ptr:
; W32: .functype test_ctselect_function_ptr (i32, i32, i32) -> (i32)
; W32-NEXT: # %bb.0:
+; W32-NEXT: local.get 2
+; W32-NEXT: local.get 1
+; W32-NEXT: local.get 2
+; W32-NEXT: i32.xor
; W32-NEXT: i32.const 0
; W32-NEXT: local.get 0
; W32-NEXT: i32.const 1
; W32-NEXT: i32.and
-; W32-NEXT: local.tee 0
; W32-NEXT: i32.sub
-; W32-NEXT: local.get 1
-; W32-NEXT: i32.and
-; W32-NEXT: local.get 0
-; W32-NEXT: i32.const -1
-; W32-NEXT: i32.add
-; W32-NEXT: local.get 2
; W32-NEXT: i32.and
-; W32-NEXT: i32.or
+; W32-NEXT: i32.xor
; W32-NEXT: # fallthrough-return
;
; W64-LABEL: test_ctselect_function_ptr:
; W64: .functype test_ctselect_function_ptr (i32, i64, i64) -> (i64)
-; W64-NEXT: .local i64
; W64-NEXT: # %bb.0:
+; W64-NEXT: local.get 2
+; W64-NEXT: local.get 1
+; W64-NEXT: local.get 2
+; W64-NEXT: i64.xor
; W64-NEXT: i64.const 0
; W64-NEXT: local.get 0
; W64-NEXT: i64.extend_i32_u
; W64-NEXT: i64.const 1
; W64-NEXT: i64.and
-; W64-NEXT: local.tee 3
; W64-NEXT: i64.sub
-; W64-NEXT: local.get 1
; W64-NEXT: i64.and
-; W64-NEXT: local.get 3
-; W64-NEXT: i64.const -1
-; W64-NEXT: i64.add
-; W64-NEXT: local.get 2
-; W64-NEXT: i64.and
-; W64-NEXT: i64.or
+; W64-NEXT: i64.xor
; W64-NEXT: # fallthrough-return
%result = call ptr @llvm.ct.select.p0(i1 %cond, ptr %func1, ptr %func2)
ret ptr %result
@@ -158,41 +137,34 @@ define ptr @test_ctselect_ptr_cmp(ptr %p1, ptr %p2, ptr %a, ptr %b) {
; W32-LABEL: test_ctselect_ptr_cmp:
; W32: .functype test_ctselect_ptr_cmp (i32, i32, i32, i32) -> (i32)
; W32-NEXT: # %bb.0:
-; W32-NEXT: i32.const -1
+; W32-NEXT: local.get 3
+; W32-NEXT: local.get 2
+; W32-NEXT: local.get 3
+; W32-NEXT: i32.xor
; W32-NEXT: i32.const 0
; W32-NEXT: local.get 0
; W32-NEXT: local.get 1
; W32-NEXT: i32.eq
-; W32-NEXT: i32.select
-; W32-NEXT: local.tee 1
-; W32-NEXT: local.get 2
+; W32-NEXT: i32.sub
; W32-NEXT: i32.and
-; W32-NEXT: local.get 1
-; W32-NEXT: i32.const -1
; W32-NEXT: i32.xor
-; W32-NEXT: local.get 3
-; W32-NEXT: i32.and
-; W32-NEXT: i32.or
; W32-NEXT: # fallthrough-return
;
; W64-LABEL: test_ctselect_ptr_cmp:
; W64: .functype test_ctselect_ptr_cmp (i64, i64, i64, i64) -> (i64)
; W64-NEXT: # %bb.0:
-; W64-NEXT: i64.const -1
+; W64-NEXT: local.get 3
+; W64-NEXT: local.get 2
+; W64-NEXT: local.get 3
+; W64-NEXT: i64.xor
; W64-NEXT: i64.const 0
; W64-NEXT: local.get 0
; W64-NEXT: local.get 1
; W64-NEXT: i64.eq
-; W64-NEXT: i64.select
-; W64-NEXT: local.tee 1
-; W64-NEXT: local.get 2
+; W64-NEXT: i64.extend_i32_u
+; W64-NEXT: i64.sub
; W64-NEXT: i64.and
-; W64-NEXT: local.get 1
-; W64-NEXT: i64.const -1
; W64-NEXT: i64.xor
-; W64-NEXT: local.get 3
-; W64-NEXT: i64.and
-; W64-NEXT: i64.or
; W64-NEXT: # fallthrough-return
%cmp = icmp eq ptr %p1, %p2
%result = call ptr @llvm.ct.select.p0(i1 %cmp, ptr %a, ptr %b)
@@ -206,41 +178,34 @@ define ptr @test_ctselect_struct_ptr(i1 %cond, ptr %a, ptr %b) {
; W32-LABEL: test_ctselect_struct_ptr:
; W32: .functype test_ctselect_struct_ptr (i32, i32, i32) -> (i32)
; W32-NEXT: # %bb.0:
+; W32-NEXT: local.get 2
+; W32-NEXT: local.get 1
+; W32-NEXT: local.get 2
+; W32-NEXT: i32.xor
; W32-NEXT: i32.const 0
; W32-NEXT: local.get 0
; W32-NEXT: i32.const 1
; W32-NEXT: i32.and
-; W32-NEXT: local.tee 0
; W32-NEXT: i32.sub
-; W32-NEXT: local.get 1
; W32-NEXT: i32.and
-; W32-NEXT: local.get 0
-; W32-NEXT: i32.const -1
-; W32-NEXT: i32.add
-; W32-NEXT: local.get 2
-; W32-NEXT: i32.and
-; W32-NEXT: i32.or
+; W32-NEXT: i32.xor
; W32-NEXT: # fallthrough-return
;
; W64-LABEL: test_ctselect_struct_ptr:
; W64: .functype test_ctselect_struct_ptr (i32, i64, i64) -> (i64)
-; W64-NEXT: .local i64
; W64-NEXT: # %bb.0:
+; W64-NEXT: local.get 2
+; W64-NEXT: local.get 1
+; W64-NEXT: local.get 2
+; W64-NEXT: i64.xor
; W64-NEXT: i64.const 0
; W64-NEXT: local.get 0
; W64-NEXT: i64.extend_i32_u
; W64-NEXT: i64.const 1
; W64-NEXT: i64.and
-; W64-NEXT: local.tee 3
; W64-NEXT: i64.sub
-; W64-NEXT: local.get 1
; W64-NEXT: i64.and
-; W64-NEXT: local.get 3
-; W64-NEXT: i64.const -1
-; W64-NEXT: i64.add
-; W64-NEXT: local.get 2
-; W64-NEXT: i64.and
-; W64-NEXT: i64.or
+; W64-NEXT: i64.xor
; W64-NEXT: # fallthrough-return
%result = call ptr @llvm.ct.select.p0(i1 %cond, ptr %a, ptr %b)
ret ptr %result
@@ -251,117 +216,93 @@ define i32 @test_ctselect_deeply_nested(i1 %c1, i1 %c2, i1 %c3, i1 %c4, i32 %a,
; W32-LABEL: test_ctselect_deeply_nested:
; W32: .functype test_ctselect_deeply_nested (i32, i32, i32, i32, i32, i32, i32, i32, i32) -> (i32)
; W32-NEXT: # %bb.0:
+; W32-NEXT: local.get 8
+; W32-NEXT: local.get 7
+; W32-NEXT: local.get 6
+; W32-NEXT: local.get 5
+; W32-NEXT: local.get 4
+; W32-NEXT: local.get 5
+; W32-NEXT: i32.xor
; W32-NEXT: i32.const 0
-; W32-NEXT: local.get 3
+; W32-NEXT: local.get 0
; W32-NEXT: i32.const 1
; W32-NEXT: i32.and
-; W32-NEXT: local.tee 3
; W32-NEXT: i32.sub
-; W32-NEXT: i32.const 0
-; W32-NEXT: local.get 2
-; W32-NEXT: i32.const 1
; W32-NEXT: i32.and
-; W32-NEXT: local.tee 2
-; W32-NEXT: i32.sub
+; W32-NEXT: i32.xor
+; W32-NEXT: local.get 6
+; W32-NEXT: i32.xor
; W32-NEXT: i32.const 0
; W32-NEXT: local.get 1
; W32-NEXT: i32.const 1
; W32-NEXT: i32.and
-; W32-NEXT: local.tee 1
; W32-NEXT: i32.sub
+; W32-NEXT: i32.and
+; W32-NEXT: i32.xor
+; W32-NEXT: local.get 7
+; W32-NEXT: i32.xor
; W32-NEXT: i32.const 0
-; W32-NEXT: local.get 0
+; W32-NEXT: local.get 2
; W32-NEXT: i32.const 1
; W32-NEXT: i32.and
-; W32-NEXT: local.tee 0
; W32-NEXT: i32.sub
-; W32-NEXT: local.get 4
-; W32-NEXT: i32.and
-; W32-NEXT: local.get 0
-; W32-NEXT: i32.const -1
-; W32-NEXT: i32.add
-; W32-NEXT: local.get 5
-; W32-NEXT: i32.and
-; W32-NEXT: i32.or
-; W32-NEXT: i32.and
-; W32-NEXT: local.get 1
-; W32-NEXT: i32.const -1
-; W32-NEXT: i32.add
-; W32-NEXT: local.get 6
-; W32-NEXT: i32.and
-; W32-NEXT: i32.or
-; W32-NEXT: i32.and
-; W32-NEXT: local.get 2
-; W32-NEXT: i32.const -1
-; W32-NEXT: i32.add
-; W32-NEXT: local.get 7
-; W32-NEXT: i32.and
-; W32-NEXT: i32.or
; W32-NEXT: i32.and
-; W32-NEXT: local.get 3
-; W32-NEXT: i32.const -1
-; W32-NEXT: i32.add
+; W32-NEXT: i32.xor
; W32-NEXT: local.get 8
+; W32-NEXT: i32.xor
+; W32-NEXT: i32.const 0
+; W32-NEXT: local.get 3
+; W32-NEXT: i32.const 1
+; W32-NEXT: i32.and
+; W32-NEXT: i32.sub
; W32-NEXT: i32.and
-; W32-NEXT: i32.or
+; W32-NEXT: i32.xor
; W32-NEXT: # fallthrough-return
;
; W64-LABEL: test_ctselect_deeply_nested:
; W64: .functype test_ctselect_deeply_nested (i32, i32, i32, i32, i32, i32, i32, i32, i32) -> (i32)
; W64-NEXT: # %bb.0:
+; W64-NEXT: local.get 8
+; W64-NEXT: local.get 7
+; W64-NEXT: local.get 6
+; W64-NEXT: local.get 5
+; W64-NEXT: local.get 4
+; W64-NEXT: local.get 5
+; W64-NEXT: i32.xor
; W64-NEXT: i32.const 0
-; W64-NEXT: local.get 3
+; W64-NEXT: local.get 0
; W64-NEXT: i32.const 1
; W64-NEXT: i32.and
-; W64-NEXT: local.tee 3
; W64-NEXT: i32.sub
-; W64-NEXT: i32.const 0
-; W64-NEXT: local.get 2
-; W64-NEXT: i32.const 1
; W64-NEXT: i32.and
-; W64-NEXT: local.tee 2
-; W64-NEXT: i32.sub
+; W64-NEXT: i32.xor
+; W64-NEXT: local.get 6
+; W64-NEXT: i32.xor
; W64-NEXT: i32.const 0
; W64-NEXT: local.get 1
; W64-NEXT: i32.const 1
; W64-NEXT: i32.and
-; W64-NEXT: local.tee 1
; W64-NEXT: i32.sub
+; W64-NEXT: i32.and
+; W64-NEXT: i32.xor
+; W64-NEXT: local.get 7
+; W64-NEXT: i32.xor
; W64-NEXT: i32.const 0
-; W64-NEXT: local.get 0
+; W64-NEXT: local.get 2
; W64-NEXT: i32.const 1
; W64-NEXT: i32.and
-; W64-NEXT: local.tee 0
; W64-NEXT: i32.sub
-; W64-NEXT: local.get 4
-; W64-NEXT: i32.and
-; W64-NEXT: local.get 0
-; W64-NEXT: i32.const -1
-; W64-NEXT: i32.add
-; W64-NEXT: local.get 5
-; W64-NEXT: i32.and
-; W64-NEXT: i32.or
-; W64-NEXT: i32.and
-; W64-NEXT: local.get 1
-; W64-NEXT: i32.const -1
-; W64-NEXT: i32.add
-; W64-NEXT: local.get 6
-; W64-NEXT: i32.and
-; W64-NEXT: i32.or
-; W64-NEXT: i32.and
-; W64-NEXT: local.get 2
-; W64-NEXT: i32.const -1
-; W64-NEXT: i32.add
-; W64-NEXT: local.get 7
-; W64-NEXT: i32.and
-; W64-NEXT: i32.or
; W64-NEXT: i32.and
-; W64-NEXT: local.get 3
-; W64-NEXT: i32.const -1
-; W64-NEXT: i32.add
+; W64-NEXT: i32.xor
; W64-NEXT: local.get 8
+; W64-NEXT: i32.xor
+; W64-NEXT: i32.const 0
+; W64-NEXT: local.get 3
+; W64-NEXT: i32.const 1
; W64-NEXT: i32.and
-; W64-NEXT: i32.or
+; W64-NEXT: i32.sub
+; W64-NEXT: i32.and
+; W64-NEXT: i32.xor
; W64-NEXT: # fallthrough-return
%sel1 = call i32 @llvm.ct.select.i32(i1 %c1, i32 %a, i32 %b)
%sel2 = call i32 @llvm.ct.select.i32(i1 %c2, i32 %sel1, i32 %c)
diff --git a/llvm/test/CodeGen/WebAssembly/ctselect-fallback-patterns.ll b/llvm/test/CodeGen/WebAssembly/ctselect-fallback-patterns.ll
index 040ee44addb69..3bd2bf6ed609e 100644
--- a/llvm/test/CodeGen/WebAssembly/ctselect-fallback-patterns.ll
+++ b/llvm/test/CodeGen/WebAssembly/ctselect-fallback-patterns.ll
@@ -8,9 +8,11 @@ define i32 @test_ctselect_smin_zero(i32 %x) {
; W32: .functype test_ctselect_smin_zero (i32) -> (i32)
; W32-NEXT: # %bb.0:
; W32-NEXT: local.get 0
-; W32-NEXT: i32.const 31
-; W32-NEXT: i32.shr_s
+; W32-NEXT: i32.const 0
; W32-NEXT: local.get 0
+; W32-NEXT: i32.const 0
+; W32-NEXT: i32.lt_s
+; W32-NEXT: i32.sub
; W32-NEXT: i32.and
; W32-NEXT: # fallthrough-return
;
@@ -18,9 +20,11 @@ define i32 @test_ctselect_smin_zero(i32 %x) {
; W64: .functype test_ctselect_smin_zero (i32) -> (i32)
; W64-NEXT: # %bb.0:
; W64-NEXT: local.get 0
-; W64-NEXT: i32.const 31
-; W64-NEXT: i32.shr_s
+; W64-NEXT: i32.const 0
; W64-NEXT: local.get 0
+; W64-NEXT: i32.const 0
+; W64-NEXT: i32.lt_s
+; W64-NEXT: i32.sub
; W64-NEXT: i32.and
; W64-NEXT: # fallthrough-return
%cmp = icmp slt i32 %x, 0
@@ -38,7 +42,8 @@ define i32 @test_ctselect_smax_zero(i32 %x) {
; W32-NEXT: local.get 0
; W32-NEXT: i32.const 0
; W32-NEXT: i32.gt_s
-; W32-NEXT: i32.select
+; W32-NEXT: i32.sub
+; W32-NEXT: i32.and
; W32-NEXT: # fallthrough-return
;
; W64-LABEL: test_ctselect_smax_zero:
@@ -49,7 +54,8 @@ define i32 @test_ctselect_smax_zero(i32 %x) {
; W64-NEXT: local.get 0
; W64-NEXT: i32.const 0
; W64-NEXT: i32.gt_s
-; W64-NEXT: i32.select
+; W64-NEXT: i32.sub
+; W64-NEXT: i32.and
; W64-NEXT: # fallthrough-return
%cmp = icmp sgt i32 %x, 0
%result = call i32 @llvm.ct.select.i32(i1 %cmp, i32 %x, i32 0)
@@ -60,44 +66,34 @@ define i32 @test_ctselect_smax_zero(i32 %x) {
define i32 @test_ctselect_smin_generic(i32 %x, i32 %y) {
; W32-LABEL: test_ctselect_smin_generic:
; W32: .functype test_ctselect_smin_generic (i32, i32) -> (i32)
-; W32-NEXT: .local i32
; W32-NEXT: # %bb.0:
-; W32-NEXT: i32.const -1
+; W32-NEXT: local.get 1
+; W32-NEXT: local.get 0
+; W32-NEXT: local.get 1
+; W32-NEXT: i32.xor
; W32-NEXT: i32.const 0
; W32-NEXT: local.get 0
; W32-NEXT: local.get 1
; W32-NEXT: i32.lt_s
-; W32-NEXT: i32.select
-; W32-NEXT: local.tee 2
-; W32-NEXT: local.get 0
+; W32-NEXT: i32.sub
; W32-NEXT: i32.and
-; W32-NEXT: local.get 2
-; W32-NEXT: i32.const -1
; W32-NEXT: i32.xor
-; W32-NEXT: local.get 1
-; W32-NEXT: i32.and
-; W32-NEXT: i32.or
; W32-NEXT: # fallthrough-return
;
; W64-LABEL: test_ctselect_smin_generic:
; W64: .functype test_ctselect_smin_generic (i32, i32) -> (i32)
-; W64-NEXT: .local i32
; W64-NEXT: # %bb.0:
-; W64-NEXT: i32.const -1
+; W64-NEXT: local.get 1
+; W64-NEXT: local.get 0
+; W64-NEXT: local.get 1
+; W64-NEXT: i32.xor
; W64-NEXT: i32.const 0
; W64-NEXT: local.get 0
; W64-NEXT: local.get 1
; W64-NEXT: i32.lt_s
-; W64-NEXT: i32.select
-; W64-NEXT: local.tee 2
-; W64-NEXT: local.get 0
+; W64-NEXT: i32.sub
; W64-NEXT: i32.and
-; W64-NEXT: local.get 2
-; W64-NEXT: i32.const -1
; W64-NEXT: i32.xor
-; W64-NEXT: local.get 1
-; W64-NEXT: i32.and
-; W64-NEXT: i32.or
; W64-NEXT: # fallthrough-return
%cmp = icmp slt i32 %x, %y
%result = call i32 @llvm.ct.select.i32(i1 %cmp, i32 %x, i32 %y)
@@ -108,44 +104,34 @@ define i32 @test_ctselect_smin_generic(i32 %x, i32 %y) {
define i32 @test_ctselect_smax_generic(i32 %x, i32 %y) {
; W32-LABEL: test_ctselect_smax_generic:
; W32: .functype test_ctselect_smax_generic (i32, i32) -> (i32)
-; W32-NEXT: .local i32
; W32-NEXT: # %bb.0:
-; W32-NEXT: i32.const -1
+; W32-NEXT: local.get 1
+; W32-NEXT: local.get 0
+; W32-NEXT: local.get 1
+; W32-NEXT: i32.xor
; W32-NEXT: i32.const 0
; W32-NEXT: local.get 0
; W32-NEXT: local.get 1
; W32-NEXT: i32.gt_s
-; W32-NEXT: i32.select
-; W32-NEXT: local.tee 2
-; W32-NEXT: local.get 0
+; W32-NEXT: i32.sub
; W32-NEXT: i32.and
-; W32-NEXT: local.get 2
-; W32-NEXT: i32.const -1
; W32-NEXT: i32.xor
-; W32-NEXT: local.get 1
-; W32-NEXT: i32.and
-; W32-NEXT: i32.or
; W32-NEXT: # fallthrough-return
;
; W64-LABEL: test_ctselect_smax_generic:
; W64: .functype test_ctselect_smax_generic (i32, i32) -> (i32)
-; W64-NEXT: .local i32
; W64-NEXT: # %bb.0:
-; W64-NEXT: i32.const -1
+; W64-NEXT: local.get 1
+; W64-NEXT: local.get 0
+; W64-NEXT: local.get 1
+; W64-NEXT: i32.xor
; W64-NEXT: i32.const 0
; W64-NEXT: local.get 0
; W64-NEXT: local.get 1
; W64-NEXT: i32.gt_s
-; W64-NEXT: i32.select
-; W64-NEXT: local.tee 2
-; W64-NEXT: local.get 0
+; W64-NEXT: i32.sub
; W64-NEXT: i32.and
-; W64-NEXT: local.get 2
-; W64-NEXT: i32.const -1
; W64-NEXT: i32.xor
-; W64-NEXT: local.get 1
-; W64-NEXT: i32.and
-; W64-NEXT: i32.or
; W64-NEXT: # fallthrough-return
%cmp = icmp sgt i32 %x, %y
%result = call i32 @llvm.ct.select.i32(i1 %cmp, i32 %x, i32 %y)
@@ -156,44 +142,34 @@ define i32 @test_ctselect_smax_generic(i32 %x, i32 %y) {
define i32 @test_ctselect_umin_generic(i32 %x, i32 %y) {
; W32-LABEL: test_ctselect_umin_generic:
; W32: .functype test_ctselect_umin_generic (i32, i32) -> (i32)
-; W32-NEXT: .local i32
; W32-NEXT: # %bb.0:
-; W32-NEXT: i32.const -1
+; W32-NEXT: local.get 1
+; W32-NEXT: local.get 0
+; W32-NEXT: local.get 1
+; W32-NEXT: i32.xor
; W32-NEXT: i32.const 0
; W32-NEXT: local.get 0
; W32-NEXT: local.get 1
; W32-NEXT: i32.lt_u
-; W32-NEXT: i32.select
-; W32-NEXT: local.tee 2
-; W32-NEXT: local.get 0
+; W32-NEXT: i32.sub
; W32-NEXT: i32.and
-; W32-NEXT: local.get 2
-; W32-NEXT: i32.const -1
; W32-NEXT: i32.xor
-; W32-NEXT: local.get 1
-; W32-NEXT: i32.and
-; W32-NEXT: i32.or
; W32-NEXT: # fallthrough-return
;
; W64-LABEL: test_ctselect_umin_generic:
; W64: .functype test_ctselect_umin_generic (i32, i32) -> (i32)
-; W64-NEXT: .local i32
; W64-NEXT: # %bb.0:
-; W64-NEXT: i32.const -1
+; W64-NEXT: local.get 1
+; W64-NEXT: local.get 0
+; W64-NEXT: local.get 1
+; W64-NEXT: i32.xor
; W64-NEXT: i32.const 0
; W64-NEXT: local.get 0
; W64-NEXT: local.get 1
; W64-NEXT: i32.lt_u
-; W64-NEXT: i32.select
-; W64-NEXT: local.tee 2
-; W64-NEXT: local.get 0
+; W64-NEXT: i32.sub
; W64-NEXT: i32.and
-; W64-NEXT: local.get 2
-; W64-NEXT: i32.const -1
; W64-NEXT: i32.xor
-; W64-NEXT: local.get 1
-; W64-NEXT: i32.and
-; W64-NEXT: i32.or
; W64-NEXT: # fallthrough-return
%cmp = icmp ult i32 %x, %y
%result = call i32 @llvm.ct.select.i32(i1 %cmp, i32 %x, i32 %y)
@@ -204,44 +180,34 @@ define i32 @test_ctselect_umin_generic(i32 %x, i32 %y) {
define i32 @test_ctselect_umax_generic(i32 %x, i32 %y) {
; W32-LABEL: test_ctselect_umax_generic:
; W32: .functype test_ctselect_umax_generic (i32, i32) -> (i32)
-; W32-NEXT: .local i32
; W32-NEXT: # %bb.0:
-; W32-NEXT: i32.const -1
+; W32-NEXT: local.get 1
+; W32-NEXT: local.get 0
+; W32-NEXT: local.get 1
+; W32-NEXT: i32.xor
; W32-NEXT: i32.const 0
; W32-NEXT: local.get 0
; W32-NEXT: local.get 1
; W32-NEXT: i32.gt_u
-; W32-NEXT: i32.select
-; W32-NEXT: local.tee 2
-; W32-NEXT: local.get 0
+; W32-NEXT: i32.sub
; W32-NEXT: i32.and
-; W32-NEXT: local.get 2
-; W32-NEXT: i32.const -1
; W32-NEXT: i32.xor
-; W32-NEXT: local.get 1
-; W32-NEXT: i32.and
-; W32-NEXT: i32.or
; W32-NEXT: # fallthrough-return
;
; W64-LABEL: test_ctselect_umax_generic:
; W64: .functype test_ctselect_umax_generic (i32, i32) -> (i32)
-; W64-NEXT: .local i32
; W64-NEXT: # %bb.0:
-; W64-NEXT: i32.const -1
+; W64-NEXT: local.get 1
+; W64-NEXT: local.get 0
+; W64-NEXT: local.get 1
+; W64-NEXT: i32.xor
; W64-NEXT: i32.const 0
; W64-NEXT: local.get 0
; W64-NEXT: local.get 1
; W64-NEXT: i32.gt_u
-; W64-NEXT: i32.select
-; W64-NEXT: local.tee 2
-; W64-NEXT: local.get 0
+; W64-NEXT: i32.sub
; W64-NEXT: i32.and
-; W64-NEXT: local.get 2
-; W64-NEXT: i32.const -1
; W64-NEXT: i32.xor
-; W64-NEXT: local.get 1
-; W64-NEXT: i32.and
-; W64-NEXT: i32.or
; W64-NEXT: # fallthrough-return
%cmp = icmp ugt i32 %x, %y
%result = call i32 @llvm.ct.select.i32(i1 %cmp, i32 %x, i32 %y)
@@ -252,42 +218,38 @@ define i32 @test_ctselect_umax_generic(i32 %x, i32 %y) {
define i32 @test_ctselect_abs(i32 %x) {
; W32-LABEL: test_ctselect_abs:
; W32: .functype test_ctselect_abs (i32) -> (i32)
-; W32-NEXT: .local i32
; W32-NEXT: # %bb.0:
; W32-NEXT: local.get 0
-; W32-NEXT: i32.const 31
-; W32-NEXT: i32.shr_s
-; W32-NEXT: local.tee 1
; W32-NEXT: i32.const 0
; W32-NEXT: local.get 0
; W32-NEXT: i32.sub
-; W32-NEXT: i32.and
-; W32-NEXT: local.get 1
-; W32-NEXT: i32.const -1
+; W32-NEXT: local.get 0
; W32-NEXT: i32.xor
+; W32-NEXT: i32.const 0
; W32-NEXT: local.get 0
+; W32-NEXT: i32.const 0
+; W32-NEXT: i32.lt_s
+; W32-NEXT: i32.sub
; W32-NEXT: i32.and
-; W32-NEXT: i32.or
+; W32-NEXT: i32.xor
; W32-NEXT: # fallthrough-return
;
; W64-LABEL: test_ctselect_abs:
; W64: .functype test_ctselect_abs (i32) -> (i32)
-; W64-NEXT: .local i32
; W64-NEXT: # %bb.0:
; W64-NEXT: local.get 0
-; W64-NEXT: i32.const 31
-; W64-NEXT: i32.shr_s
-; W64-NEXT: local.tee 1
; W64-NEXT: i32.const 0
; W64-NEXT: local.get 0
; W64-NEXT: i32.sub
-; W64-NEXT: i32.and
-; W64-NEXT: local.get 1
-; W64-NEXT: i32.const -1
+; W64-NEXT: local.get 0
; W64-NEXT: i32.xor
+; W64-NEXT: i32.const 0
; W64-NEXT: local.get 0
+; W64-NEXT: i32.const 0
+; W64-NEXT: i32.lt_s
+; W64-NEXT: i32.sub
; W64-NEXT: i32.and
-; W64-NEXT: i32.or
+; W64-NEXT: i32.xor
; W64-NEXT: # fallthrough-return
%neg = sub i32 0, %x
%cmp = icmp slt i32 %x, 0
@@ -301,40 +263,40 @@ define i32 @test_ctselect_nabs(i32 %x) {
; W32: .functype test_ctselect_nabs (i32) -> (i32)
; W32-NEXT: .local i32
; W32-NEXT: # %bb.0:
+; W32-NEXT: i32.const 0
; W32-NEXT: local.get 0
-; W32-NEXT: i32.const 31
-; W32-NEXT: i32.shr_s
+; W32-NEXT: i32.sub
; W32-NEXT: local.tee 1
; W32-NEXT: local.get 0
-; W32-NEXT: i32.and
; W32-NEXT: local.get 1
-; W32-NEXT: i32.const -1
; W32-NEXT: i32.xor
; W32-NEXT: i32.const 0
; W32-NEXT: local.get 0
+; W32-NEXT: i32.const 0
+; W32-NEXT: i32.lt_s
; W32-NEXT: i32.sub
; W32-NEXT: i32.and
-; W32-NEXT: i32.or
+; W32-NEXT: i32.xor
; W32-NEXT: # fallthrough-return
;
; W64-LABEL: test_ctselect_nabs:
; W64: .functype test_ctselect_nabs (i32) -> (i32)
; W64-NEXT: .local i32
; W64-NEXT: # %bb.0:
+; W64-NEXT: i32.const 0
; W64-NEXT: local.get 0
-; W64-NEXT: i32.const 31
-; W64-NEXT: i32.shr_s
+; W64-NEXT: i32.sub
; W64-NEXT: local.tee 1
; W64-NEXT: local.get 0
-; W64-NEXT: i32.and
; W64-NEXT: local.get 1
-; W64-NEXT: i32.const -1
; W64-NEXT: i32.xor
; W64-NEXT: i32.const 0
; W64-NEXT: local.get 0
+; W64-NEXT: i32.const 0
+; W64-NEXT: i32.lt_s
; W64-NEXT: i32.sub
; W64-NEXT: i32.and
-; W64-NEXT: i32.or
+; W64-NEXT: i32.xor
; W64-NEXT: # fallthrough-return
%neg = sub i32 0, %x
%cmp = icmp slt i32 %x, 0
@@ -347,17 +309,21 @@ define i32 @test_ctselect_sign_extend(i32 %x) {
; W32-LABEL: test_ctselect_sign_extend:
; W32: .functype test_ctselect_sign_extend (i32) -> (i32)
; W32-NEXT: # %bb.0:
+; W32-NEXT: i32.const 0
; W32-NEXT: local.get 0
-; W32-NEXT: i32.const 31
-; W32-NEXT: i32.shr_s
+; W32-NEXT: i32.const 0
+; W32-NEXT: i32.lt_s
+; W32-NEXT: i32.sub
; W32-NEXT: # fallthrough-return
;
; W64-LABEL: test_ctselect_sign_extend:
; W64: .functype test_ctselect_sign_extend (i32) -> (i32)
; W64-NEXT: # %bb.0:
+; W64-NEXT: i32.const 0
; W64-NEXT: local.get 0
-; W64-NEXT: i32.const 31
-; W64-NEXT: i32.shr_s
+; W64-NEXT: i32.const 0
+; W64-NEXT: i32.lt_s
+; W64-NEXT: i32.sub
; W64-NEXT: # fallthrough-return
%cmp = icmp slt i32 %x, 0
%result = call i32 @llvm.ct.select.i32(i1 %cmp, i32 -1, i32 0)
@@ -407,17 +373,13 @@ define i32 @test_ctselect_constant_folding_false(i32 %a, i32 %b) {
; W32-LABEL: test_ctselect_constant_folding_false:
; W32: .functype test_ctselect_constant_folding_false (i32, i32) -> (i32)
; W32-NEXT: # %bb.0:
-; W32-NEXT: i32.const 0
; W32-NEXT: local.get 1
-; W32-NEXT: i32.or
; W32-NEXT: # fallthrough-return
;
; W64-LABEL: test_ctselect_constant_folding_false:
; W64: .functype test_ctselect_constant_folding_false (i32, i32) -> (i32)
; W64-NEXT: # %bb.0:
-; W64-NEXT: i32.const 0
; W64-NEXT: local.get 1
-; W64-NEXT: i32.or
; W64-NEXT: # fallthrough-return
%result = call i32 @llvm.ct.select.i32(i1 false, i32 %a, i32 %b)
ret i32 %result
@@ -428,39 +390,13 @@ define i32 @test_ctselect_identical_operands(i1 %cond, i32 %x) {
; W32-LABEL: test_ctselect_identical_operands:
; W32: .functype test_ctselect_identical_operands (i32, i32) -> (i32)
; W32-NEXT: # %bb.0:
-; W32-NEXT: i32.const 0
-; W32-NEXT: local.get 0
-; W32-NEXT: i32.const 1
-; W32-NEXT: i32.and
-; W32-NEXT: local.tee 0
-; W32-NEXT: i32.sub
-; W32-NEXT: local.get 1
-; W32-NEXT: i32.and
-; W32-NEXT: local.get 0
-; W32-NEXT: i32.const -1
-; W32-NEXT: i32.add
; W32-NEXT: local.get 1
-; W32-NEXT: i32.and
-; W32-NEXT: i32.or
; W32-NEXT: # fallthrough-return
;
; W64-LABEL: test_ctselect_identical_operands:
; W64: .functype test_ctselect_identical_operands (i32, i32) -> (i32)
; W64-NEXT: # %bb.0:
-; W64-NEXT: i32.const 0
-; W64-NEXT: local.get 0
-; W64-NEXT: i32.const 1
-; W64-NEXT: i32.and
-; W64-NEXT: local.tee 0
-; W64-NEXT: i32.sub
; W64-NEXT: local.get 1
-; W64-NEXT: i32.and
-; W64-NEXT: local.get 0
-; W64-NEXT: i32.const -1
-; W64-NEXT: i32.add
-; W64-NEXT: local.get 1
-; W64-NEXT: i32.and
-; W64-NEXT: i32.or
; W64-NEXT: # fallthrough-return
%result = call i32 @llvm.ct.select.i32(i1 %cond, i32 %x, i32 %x)
ret i32 %result
@@ -471,41 +407,33 @@ define i32 @test_ctselect_inverted_condition(i32 %x, i32 %y, i32 %a, i32 %b) {
; W32-LABEL: test_ctselect_inverted_condition:
; W32: .functype test_ctselect_inverted_condition (i32, i32, i32, i32) -> (i32)
; W32-NEXT: # %bb.0:
-; W32-NEXT: i32.const -1
+; W32-NEXT: local.get 2
+; W32-NEXT: local.get 3
+; W32-NEXT: local.get 2
+; W32-NEXT: i32.xor
; W32-NEXT: i32.const 0
; W32-NEXT: local.get 0
; W32-NEXT: local.get 1
-; W32-NEXT: i32.ne
-; W32-NEXT: i32.select
-; W32-NEXT: local.tee 1
-; W32-NEXT: local.get 2
+; W32-NEXT: i32.eq
+; W32-NEXT: i32.sub
; W32-NEXT: i32.and
-; W32-NEXT: local.get 1
-; W32-NEXT: i32.const -1
; W32-NEXT: i32.xor
-; W32-NEXT: local.get 3
-; W32-NEXT: i32.and
-; W32-NEXT: i32.or
; W32-NEXT: # fallthrough-return
;
; W64-LABEL: test_ctselect_inverted_condition:
; W64: .functype test_ctselect_inverted_condition (i32, i32, i32, i32) -> (i32)
; W64-NEXT: # %bb.0:
-; W64-NEXT: i32.const -1
+; W64-NEXT: local.get 2
+; W64-NEXT: local.get 3
+; W64-NEXT: local.get 2
+; W64-NEXT: i32.xor
; W64-NEXT: i32.const 0
; W64-NEXT: local.get 0
; W64-NEXT: local.get 1
-; W64-NEXT: i32.ne
-; W64-NEXT: i32.select
-; W64-NEXT: local.tee 1
-; W64-NEXT: local.get 2
+; W64-NEXT: i32.eq
+; W64-NEXT: i32.sub
; W64-NEXT: i32.and
-; W64-NEXT: local.get 1
-; W64-NEXT: i32.const -1
; W64-NEXT: i32.xor
-; W64-NEXT: local.get 3
-; W64-NEXT: i32.and
-; W64-NEXT: i32.or
; W64-NEXT: # fallthrough-return
%cmp = icmp eq i32 %x, %y
%not_cmp = xor i1 %cmp, true
@@ -518,91 +446,73 @@ define i32 @test_ctselect_chain(i1 %c1, i1 %c2, i1 %c3, i32 %a, i32 %b, i32 %c,
; W32-LABEL: test_ctselect_chain:
; W32: .functype test_ctselect_chain (i32, i32, i32, i32, i32, i32, i32) -> (i32)
; W32-NEXT: # %bb.0:
+; W32-NEXT: local.get 6
+; W32-NEXT: local.get 5
+; W32-NEXT: local.get 4
+; W32-NEXT: local.get 3
+; W32-NEXT: local.get 4
+; W32-NEXT: i32.xor
; W32-NEXT: i32.const 0
-; W32-NEXT: local.get 2
+; W32-NEXT: local.get 0
; W32-NEXT: i32.const 1
; W32-NEXT: i32.and
-; W32-NEXT: local.tee 2
; W32-NEXT: i32.sub
+; W32-NEXT: i32.and
+; W32-NEXT: i32.xor
+; W32-NEXT: local.get 5
+; W32-NEXT: i32.xor
; W32-NEXT: i32.const 0
; W32-NEXT: local.get 1
; W32-NEXT: i32.const 1
; W32-NEXT: i32.and
-; W32-NEXT: local.tee 1
; W32-NEXT: i32.sub
+; W32-NEXT: i32.and
+; W32-NEXT: i32.xor
+; W32-NEXT: local.get 6
+; W32-NEXT: i32.xor
; W32-NEXT: i32.const 0
-; W32-NEXT: local.get 0
+; W32-NEXT: local.get 2
; W32-NEXT: i32.const 1
; W32-NEXT: i32.and
-; W32-NEXT: local.tee 0
; W32-NEXT: i32.sub
-; W32-NEXT: local.get 3
-; W32-NEXT: i32.and
-; W32-NEXT: local.get 0
-; W32-NEXT: i32.const -1
-; W32-NEXT: i32.add
-; W32-NEXT: local.get 4
; W32-NEXT: i32.and
-; W32-NEXT: i32.or
-; W32-NEXT: i32.and
-; W32-NEXT: local.get 1
-; W32-NEXT: i32.const -1
-; W32-NEXT: i32.add
-; W32-NEXT: local.get 5
-; W32-NEXT: i32.and
-; W32-NEXT: i32.or
-; W32-NEXT: i32.and
-; W32-NEXT: local.get 2
-; W32-NEXT: i32.const -1
-; W32-NEXT: i32.add
-; W32-NEXT: local.get 6
-; W32-NEXT: i32.and
-; W32-NEXT: i32.or
+; W32-NEXT: i32.xor
; W32-NEXT: # fallthrough-return
;
; W64-LABEL: test_ctselect_chain:
; W64: .functype test_ctselect_chain (i32, i32, i32, i32, i32, i32, i32) -> (i32)
; W64-NEXT: # %bb.0:
+; W64-NEXT: local.get 6
+; W64-NEXT: local.get 5
+; W64-NEXT: local.get 4
+; W64-NEXT: local.get 3
+; W64-NEXT: local.get 4
+; W64-NEXT: i32.xor
; W64-NEXT: i32.const 0
-; W64-NEXT: local.get 2
+; W64-NEXT: local.get 0
; W64-NEXT: i32.const 1
; W64-NEXT: i32.and
-; W64-NEXT: local.tee 2
; W64-NEXT: i32.sub
+; W64-NEXT: i32.and
+; W64-NEXT: i32.xor
+; W64-NEXT: local.get 5
+; W64-NEXT: i32.xor
; W64-NEXT: i32.const 0
; W64-NEXT: local.get 1
; W64-NEXT: i32.const 1
; W64-NEXT: i32.and
-; W64-NEXT: local.tee 1
; W64-NEXT: i32.sub
+; W64-NEXT: i32.and
+; W64-NEXT: i32.xor
+; W64-NEXT: local.get 6
+; W64-NEXT: i32.xor
; W64-NEXT: i32.const 0
-; W64-NEXT: local.get 0
+; W64-NEXT: local.get 2
; W64-NEXT: i32.const 1
; W64-NEXT: i32.and
-; W64-NEXT: local.tee 0
; W64-NEXT: i32.sub
-; W64-NEXT: local.get 3
-; W64-NEXT: i32.and
-; W64-NEXT: local.get 0
-; W64-NEXT: i32.const -1
-; W64-NEXT: i32.add
-; W64-NEXT: local.get 4
-; W64-NEXT: i32.and
-; W64-NEXT: i32.or
-; W64-NEXT: i32.and
-; W64-NEXT: local.get 1
-; W64-NEXT: i32.const -1
-; W64-NEXT: i32.add
-; W64-NEXT: local.get 5
; W64-NEXT: i32.and
-; W64-NEXT: i32.or
-; W64-NEXT: i32.and
-; W64-NEXT: local.get 2
-; W64-NEXT: i32.const -1
-; W64-NEXT: i32.add
-; W64-NEXT: local.get 6
-; W64-NEXT: i32.and
-; W64-NEXT: i32.or
+; W64-NEXT: i32.xor
; W64-NEXT: # fallthrough-return
%sel1 = call i32 @llvm.ct.select.i32(i1 %c1, i32 %a, i32 %b)
%sel2 = call i32 @llvm.ct.select.i32(i1 %c2, i32 %sel1, i32 %c)
@@ -616,9 +526,9 @@ define i64 @test_ctselect_i64_smin_zero(i64 %x) {
; W32: .functype test_ctselect_i64_smin_zero (i64) -> (i64)
; W32-NEXT: # %bb.0:
; W32-NEXT: local.get 0
+; W32-NEXT: local.get 0
; W32-NEXT: i64.const 63
; W32-NEXT: i64.shr_s
-; W32-NEXT: local.get 0
; W32-NEXT: i64.and
; W32-NEXT: # fallthrough-return
;
@@ -626,9 +536,9 @@ define i64 @test_ctselect_i64_smin_zero(i64 %x) {
; W64: .functype test_ctselect_i64_smin_zero (i64) -> (i64)
; W64-NEXT: # %bb.0:
; W64-NEXT: local.get 0
+; W64-NEXT: local.get 0
; W64-NEXT: i64.const 63
; W64-NEXT: i64.shr_s
-; W64-NEXT: local.get 0
; W64-NEXT: i64.and
; W64-NEXT: # fallthrough-return
%cmp = icmp slt i64 %x, 0
diff --git a/llvm/test/CodeGen/WebAssembly/ctselect-fallback-vector.ll b/llvm/test/CodeGen/WebAssembly/ctselect-fallback-vector.ll
index 75e38e1856a03..a19e19b579d0f 100644
--- a/llvm/test/CodeGen/WebAssembly/ctselect-fallback-vector.ll
+++ b/llvm/test/CodeGen/WebAssembly/ctselect-fallback-vector.ll
@@ -6,40 +6,36 @@
define <4 x i32> @test_ctselect_v4i32(i1 %cond, <4 x i32> %a, <4 x i32> %b) {
; WASM32-LABEL: test_ctselect_v4i32:
; WASM32: .functype test_ctselect_v4i32 (i32, v128, v128) -> (v128)
-; WASM32-NEXT: .local v128
; WASM32-NEXT: # %bb.0:
+; WASM32-NEXT: local.get 2
+; WASM32-NEXT: local.get 1
+; WASM32-NEXT: local.get 2
+; WASM32-NEXT: v128.xor
; WASM32-NEXT: local.get 0
; WASM32-NEXT: i32x4.splat
; WASM32-NEXT: i32.const 31
; WASM32-NEXT: i32x4.shl
; WASM32-NEXT: i32.const 31
; WASM32-NEXT: i32x4.shr_s
-; WASM32-NEXT: local.tee 3
-; WASM32-NEXT: local.get 1
; WASM32-NEXT: v128.and
-; WASM32-NEXT: local.get 2
-; WASM32-NEXT: local.get 3
-; WASM32-NEXT: v128.andnot
-; WASM32-NEXT: v128.or
+; WASM32-NEXT: v128.xor
; WASM32-NEXT: # fallthrough-return
;
; WASM64-LABEL: test_ctselect_v4i32:
; WASM64: .functype test_ctselect_v4i32 (i32, v128, v128) -> (v128)
-; WASM64-NEXT: .local v128
; WASM64-NEXT: # %bb.0:
+; WASM64-NEXT: local.get 2
+; WASM64-NEXT: local.get 1
+; WASM64-NEXT: local.get 2
+; WASM64-NEXT: v128.xor
; WASM64-NEXT: local.get 0
; WASM64-NEXT: i32x4.splat
; WASM64-NEXT: i32.const 31
; WASM64-NEXT: i32x4.shl
; WASM64-NEXT: i32.const 31
; WASM64-NEXT: i32x4.shr_s
-; WASM64-NEXT: local.tee 3
-; WASM64-NEXT: local.get 1
; WASM64-NEXT: v128.and
-; WASM64-NEXT: local.get 2
-; WASM64-NEXT: local.get 3
-; WASM64-NEXT: v128.andnot
-; WASM64-NEXT: v128.or
+; WASM64-NEXT: v128.xor
; WASM64-NEXT: # fallthrough-return
%result = call <4 x i32> @llvm.ct.select.v4i32(i1 %cond, <4 x i32> %a, <4 x i32> %b)
ret <4 x i32> %result
@@ -49,40 +45,36 @@ define <4 x i32> @test_ctselect_v4i32(i1 %cond, <4 x i32> %a, <4 x i32> %b) {
define <8 x i16> @test_ctselect_v8i16(i1 %cond, <8 x i16> %a, <8 x i16> %b) {
; WASM32-LABEL: test_ctselect_v8i16:
; WASM32: .functype test_ctselect_v8i16 (i32, v128, v128) -> (v128)
-; WASM32-NEXT: .local v128
; WASM32-NEXT: # %bb.0:
+; WASM32-NEXT: local.get 2
+; WASM32-NEXT: local.get 1
+; WASM32-NEXT: local.get 2
+; WASM32-NEXT: v128.xor
; WASM32-NEXT: local.get 0
; WASM32-NEXT: i16x8.splat
; WASM32-NEXT: i32.const 15
; WASM32-NEXT: i16x8.shl
; WASM32-NEXT: i32.const 15
; WASM32-NEXT: i16x8.shr_s
-; WASM32-NEXT: local.tee 3
-; WASM32-NEXT: local.get 1
; WASM32-NEXT: v128.and
-; WASM32-NEXT: local.get 2
-; WASM32-NEXT: local.get 3
-; WASM32-NEXT: v128.andnot
-; WASM32-NEXT: v128.or
+; WASM32-NEXT: v128.xor
; WASM32-NEXT: # fallthrough-return
;
; WASM64-LABEL: test_ctselect_v8i16:
; WASM64: .functype test_ctselect_v8i16 (i32, v128, v128) -> (v128)
-; WASM64-NEXT: .local v128
; WASM64-NEXT: # %bb.0:
+; WASM64-NEXT: local.get 2
+; WASM64-NEXT: local.get 1
+; WASM64-NEXT: local.get 2
+; WASM64-NEXT: v128.xor
; WASM64-NEXT: local.get 0
; WASM64-NEXT: i16x8.splat
; WASM64-NEXT: i32.const 15
; WASM64-NEXT: i16x8.shl
; WASM64-NEXT: i32.const 15
; WASM64-NEXT: i16x8.shr_s
-; WASM64-NEXT: local.tee 3
-; WASM64-NEXT: local.get 1
; WASM64-NEXT: v128.and
-; WASM64-NEXT: local.get 2
-; WASM64-NEXT: local.get 3
-; WASM64-NEXT: v128.andnot
-; WASM64-NEXT: v128.or
+; WASM64-NEXT: v128.xor
; WASM64-NEXT: # fallthrough-return
%result = call <8 x i16> @llvm.ct.select.v8i16(i1 %cond, <8 x i16> %a, <8 x i16> %b)
ret <8 x i16> %result
@@ -92,40 +84,36 @@ define <8 x i16> @test_ctselect_v8i16(i1 %cond, <8 x i16> %a, <8 x i16> %b) {
define <16 x i8> @test_ctselect_v16i8(i1 %cond, <16 x i8> %a, <16 x i8> %b) {
; WASM32-LABEL: test_ctselect_v16i8:
; WASM32: .functype test_ctselect_v16i8 (i32, v128, v128) -> (v128)
-; WASM32-NEXT: .local v128
; WASM32-NEXT: # %bb.0:
+; WASM32-NEXT: local.get 2
+; WASM32-NEXT: local.get 1
+; WASM32-NEXT: local.get 2
+; WASM32-NEXT: v128.xor
; WASM32-NEXT: local.get 0
; WASM32-NEXT: i8x16.splat
; WASM32-NEXT: i32.const 7
; WASM32-NEXT: i8x16.shl
; WASM32-NEXT: i32.const 7
; WASM32-NEXT: i8x16.shr_s
-; WASM32-NEXT: local.tee 3
-; WASM32-NEXT: local.get 1
; WASM32-NEXT: v128.and
-; WASM32-NEXT: local.get 2
-; WASM32-NEXT: local.get 3
-; WASM32-NEXT: v128.andnot
-; WASM32-NEXT: v128.or
+; WASM32-NEXT: v128.xor
; WASM32-NEXT: # fallthrough-return
;
; WASM64-LABEL: test_ctselect_v16i8:
; WASM64: .functype test_ctselect_v16i8 (i32, v128, v128) -> (v128)
-; WASM64-NEXT: .local v128
; WASM64-NEXT: # %bb.0:
+; WASM64-NEXT: local.get 2
+; WASM64-NEXT: local.get 1
+; WASM64-NEXT: local.get 2
+; WASM64-NEXT: v128.xor
; WASM64-NEXT: local.get 0
; WASM64-NEXT: i8x16.splat
; WASM64-NEXT: i32.const 7
; WASM64-NEXT: i8x16.shl
; WASM64-NEXT: i32.const 7
; WASM64-NEXT: i8x16.shr_s
-; WASM64-NEXT: local.tee 3
-; WASM64-NEXT: local.get 1
; WASM64-NEXT: v128.and
-; WASM64-NEXT: local.get 2
-; WASM64-NEXT: local.get 3
-; WASM64-NEXT: v128.andnot
-; WASM64-NEXT: v128.or
+; WASM64-NEXT: v128.xor
; WASM64-NEXT: # fallthrough-return
%result = call <16 x i8> @llvm.ct.select.v16i8(i1 %cond, <16 x i8> %a, <16 x i8> %b)
ret <16 x i8> %result
@@ -135,40 +123,36 @@ define <16 x i8> @test_ctselect_v16i8(i1 %cond, <16 x i8> %a, <16 x i8> %b) {
define <2 x i64> @test_ctselect_v2i64(i1 %cond, <2 x i64> %a, <2 x i64> %b) {
; WASM32-LABEL: test_ctselect_v2i64:
; WASM32: .functype test_ctselect_v2i64 (i32, v128, v128) -> (v128)
-; WASM32-NEXT: .local v128
; WASM32-NEXT: # %bb.0:
+; WASM32-NEXT: local.get 2
+; WASM32-NEXT: local.get 1
+; WASM32-NEXT: local.get 2
+; WASM32-NEXT: v128.xor
; WASM32-NEXT: local.get 0
; WASM32-NEXT: i32x4.splat
; WASM32-NEXT: i32.const 63
; WASM32-NEXT: i64x2.shl
; WASM32-NEXT: i32.const 63
; WASM32-NEXT: i64x2.shr_s
-; WASM32-NEXT: local.tee 3
-; WASM32-NEXT: local.get 1
; WASM32-NEXT: v128.and
-; WASM32-NEXT: local.get 2
-; WASM32-NEXT: local.get 3
-; WASM32-NEXT: v128.andnot
-; WASM32-NEXT: v128.or
+; WASM32-NEXT: v128.xor
; WASM32-NEXT: # fallthrough-return
;
; WASM64-LABEL: test_ctselect_v2i64:
; WASM64: .functype test_ctselect_v2i64 (i32, v128, v128) -> (v128)
-; WASM64-NEXT: .local v128
; WASM64-NEXT: # %bb.0:
+; WASM64-NEXT: local.get 2
+; WASM64-NEXT: local.get 1
+; WASM64-NEXT: local.get 2
+; WASM64-NEXT: v128.xor
; WASM64-NEXT: local.get 0
; WASM64-NEXT: i32x4.splat
; WASM64-NEXT: i32.const 63
; WASM64-NEXT: i64x2.shl
; WASM64-NEXT: i32.const 63
; WASM64-NEXT: i64x2.shr_s
-; WASM64-NEXT: local.tee 3
-; WASM64-NEXT: local.get 1
; WASM64-NEXT: v128.and
-; WASM64-NEXT: local.get 2
-; WASM64-NEXT: local.get 3
-; WASM64-NEXT: v128.andnot
-; WASM64-NEXT: v128.or
+; WASM64-NEXT: v128.xor
; WASM64-NEXT: # fallthrough-return
%result = call <2 x i64> @llvm.ct.select.v2i64(i1 %cond, <2 x i64> %a, <2 x i64> %b)
ret <2 x i64> %result
@@ -178,40 +162,36 @@ define <2 x i64> @test_ctselect_v2i64(i1 %cond, <2 x i64> %a, <2 x i64> %b) {
define <4 x float> @test_ctselect_v4f32(i1 %cond, <4 x float> %a, <4 x float> %b) {
; WASM32-LABEL: test_ctselect_v4f32:
; WASM32: .functype test_ctselect_v4f32 (i32, v128, v128) -> (v128)
-; WASM32-NEXT: .local v128
; WASM32-NEXT: # %bb.0:
+; WASM32-NEXT: local.get 2
+; WASM32-NEXT: local.get 1
+; WASM32-NEXT: local.get 2
+; WASM32-NEXT: v128.xor
; WASM32-NEXT: local.get 0
; WASM32-NEXT: i32x4.splat
; WASM32-NEXT: i32.const 31
; WASM32-NEXT: i32x4.shl
; WASM32-NEXT: i32.const 31
; WASM32-NEXT: i32x4.shr_s
-; WASM32-NEXT: local.tee 3
-; WASM32-NEXT: local.get 1
; WASM32-NEXT: v128.and
-; WASM32-NEXT: local.get 2
-; WASM32-NEXT: local.get 3
-; WASM32-NEXT: v128.andnot
-; WASM32-NEXT: v128.or
+; WASM32-NEXT: v128.xor
; WASM32-NEXT: # fallthrough-return
;
; WASM64-LABEL: test_ctselect_v4f32:
; WASM64: .functype test_ctselect_v4f32 (i32, v128, v128) -> (v128)
-; WASM64-NEXT: .local v128
; WASM64-NEXT: # %bb.0:
+; WASM64-NEXT: local.get 2
+; WASM64-NEXT: local.get 1
+; WASM64-NEXT: local.get 2
+; WASM64-NEXT: v128.xor
; WASM64-NEXT: local.get 0
; WASM64-NEXT: i32x4.splat
; WASM64-NEXT: i32.const 31
; WASM64-NEXT: i32x4.shl
; WASM64-NEXT: i32.const 31
; WASM64-NEXT: i32x4.shr_s
-; WASM64-NEXT: local.tee 3
-; WASM64-NEXT: local.get 1
; WASM64-NEXT: v128.and
-; WASM64-NEXT: local.get 2
-; WASM64-NEXT: local.get 3
-; WASM64-NEXT: v128.andnot
-; WASM64-NEXT: v128.or
+; WASM64-NEXT: v128.xor
; WASM64-NEXT: # fallthrough-return
%result = call <4 x float> @llvm.ct.select.v4f32(i1 %cond, <4 x float> %a, <4 x float> %b)
ret <4 x float> %result
@@ -221,40 +201,36 @@ define <4 x float> @test_ctselect_v4f32(i1 %cond, <4 x float> %a, <4 x float> %b
define <2 x double> @test_ctselect_v2f64(i1 %cond, <2 x double> %a, <2 x double> %b) {
; WASM32-LABEL: test_ctselect_v2f64:
; WASM32: .functype test_ctselect_v2f64 (i32, v128, v128) -> (v128)
-; WASM32-NEXT: .local v128
; WASM32-NEXT: # %bb.0:
+; WASM32-NEXT: local.get 2
+; WASM32-NEXT: local.get 1
+; WASM32-NEXT: local.get 2
+; WASM32-NEXT: v128.xor
; WASM32-NEXT: local.get 0
; WASM32-NEXT: i32x4.splat
; WASM32-NEXT: i32.const 63
; WASM32-NEXT: i64x2.shl
; WASM32-NEXT: i32.const 63
; WASM32-NEXT: i64x2.shr_s
-; WASM32-NEXT: local.tee 3
-; WASM32-NEXT: local.get 1
; WASM32-NEXT: v128.and
-; WASM32-NEXT: local.get 2
-; WASM32-NEXT: local.get 3
-; WASM32-NEXT: v128.andnot
-; WASM32-NEXT: v128.or
+; WASM32-NEXT: v128.xor
; WASM32-NEXT: # fallthrough-return
;
; WASM64-LABEL: test_ctselect_v2f64:
; WASM64: .functype test_ctselect_v2f64 (i32, v128, v128) -> (v128)
-; WASM64-NEXT: .local v128
; WASM64-NEXT: # %bb.0:
+; WASM64-NEXT: local.get 2
+; WASM64-NEXT: local.get 1
+; WASM64-NEXT: local.get 2
+; WASM64-NEXT: v128.xor
; WASM64-NEXT: local.get 0
; WASM64-NEXT: i32x4.splat
; WASM64-NEXT: i32.const 63
; WASM64-NEXT: i64x2.shl
; WASM64-NEXT: i32.const 63
; WASM64-NEXT: i64x2.shr_s
-; WASM64-NEXT: local.tee 3
-; WASM64-NEXT: local.get 1
; WASM64-NEXT: v128.and
-; WASM64-NEXT: local.get 2
-; WASM64-NEXT: local.get 3
-; WASM64-NEXT: v128.andnot
-; WASM64-NEXT: v128.or
+; WASM64-NEXT: v128.xor
; WASM64-NEXT: # fallthrough-return
%result = call <2 x double> @llvm.ct.select.v2f64(i1 %cond, <2 x double> %a, <2 x double> %b)
ret <2 x double> %result
@@ -266,42 +242,42 @@ define <4 x i32> @test_ctselect_v4i32_aligned_load(i1 %cond, ptr %p1, ptr %p2) {
; WASM32: .functype test_ctselect_v4i32_aligned_load (i32, i32, i32) -> (v128)
; WASM32-NEXT: .local v128
; WASM32-NEXT: # %bb.0:
+; WASM32-NEXT: local.get 2
+; WASM32-NEXT: v128.load 0
+; WASM32-NEXT: local.tee 3
+; WASM32-NEXT: local.get 3
+; WASM32-NEXT: local.get 1
+; WASM32-NEXT: v128.load 0
+; WASM32-NEXT: v128.xor
; WASM32-NEXT: local.get 0
; WASM32-NEXT: i32x4.splat
; WASM32-NEXT: i32.const 31
; WASM32-NEXT: i32x4.shl
; WASM32-NEXT: i32.const 31
; WASM32-NEXT: i32x4.shr_s
-; WASM32-NEXT: local.tee 3
-; WASM32-NEXT: local.get 1
-; WASM32-NEXT: v128.load 0
; WASM32-NEXT: v128.and
-; WASM32-NEXT: local.get 2
-; WASM32-NEXT: v128.load 0
-; WASM32-NEXT: local.get 3
-; WASM32-NEXT: v128.andnot
-; WASM32-NEXT: v128.or
+; WASM32-NEXT: v128.xor
; WASM32-NEXT: # fallthrough-return
;
; WASM64-LABEL: test_ctselect_v4i32_aligned_load:
; WASM64: .functype test_ctselect_v4i32_aligned_load (i32, i64, i64) -> (v128)
; WASM64-NEXT: .local v128
; WASM64-NEXT: # %bb.0:
+; WASM64-NEXT: local.get 2
+; WASM64-NEXT: v128.load 0
+; WASM64-NEXT: local.tee 3
+; WASM64-NEXT: local.get 3
+; WASM64-NEXT: local.get 1
+; WASM64-NEXT: v128.load 0
+; WASM64-NEXT: v128.xor
; WASM64-NEXT: local.get 0
; WASM64-NEXT: i32x4.splat
; WASM64-NEXT: i32.const 31
; WASM64-NEXT: i32x4.shl
; WASM64-NEXT: i32.const 31
; WASM64-NEXT: i32x4.shr_s
-; WASM64-NEXT: local.tee 3
-; WASM64-NEXT: local.get 1
-; WASM64-NEXT: v128.load 0
; WASM64-NEXT: v128.and
-; WASM64-NEXT: local.get 2
-; WASM64-NEXT: v128.load 0
-; WASM64-NEXT: local.get 3
-; WASM64-NEXT: v128.andnot
-; WASM64-NEXT: v128.or
+; WASM64-NEXT: v128.xor
; WASM64-NEXT: # fallthrough-return
%a = load <4 x i32>, ptr %p1, align 16
%b = load <4 x i32>, ptr %p2, align 16
@@ -315,42 +291,42 @@ define <4 x i32> @test_ctselect_v4i32_unaligned_load(i1 %cond, ptr %p1, ptr %p2)
; WASM32: .functype test_ctselect_v4i32_unaligned_load (i32, i32, i32) -> (v128)
; WASM32-NEXT: .local v128
; WASM32-NEXT: # %bb.0:
+; WASM32-NEXT: local.get 2
+; WASM32-NEXT: v128.load 0:p2align=2
+; WASM32-NEXT: local.tee 3
+; WASM32-NEXT: local.get 3
+; WASM32-NEXT: local.get 1
+; WASM32-NEXT: v128.load 0:p2align=2
+; WASM32-NEXT: v128.xor
; WASM32-NEXT: local.get 0
; WASM32-NEXT: i32x4.splat
; WASM32-NEXT: i32.const 31
; WASM32-NEXT: i32x4.shl
; WASM32-NEXT: i32.const 31
; WASM32-NEXT: i32x4.shr_s
-; WASM32-NEXT: local.tee 3
-; WASM32-NEXT: local.get 1
-; WASM32-NEXT: v128.load 0:p2align=2
; WASM32-NEXT: v128.and
-; WASM32-NEXT: local.get 2
-; WASM32-NEXT: v128.load 0:p2align=2
-; WASM32-NEXT: local.get 3
-; WASM32-NEXT: v128.andnot
-; WASM32-NEXT: v128.or
+; WASM32-NEXT: v128.xor
; WASM32-NEXT: # fallthrough-return
;
; WASM64-LABEL: test_ctselect_v4i32_unaligned_load:
; WASM64: .functype test_ctselect_v4i32_unaligned_load (i32, i64, i64) -> (v128)
; WASM64-NEXT: .local v128
; WASM64-NEXT: # %bb.0:
+; WASM64-NEXT: local.get 2
+; WASM64-NEXT: v128.load 0:p2align=2
+; WASM64-NEXT: local.tee 3
+; WASM64-NEXT: local.get 3
+; WASM64-NEXT: local.get 1
+; WASM64-NEXT: v128.load 0:p2align=2
+; WASM64-NEXT: v128.xor
; WASM64-NEXT: local.get 0
; WASM64-NEXT: i32x4.splat
; WASM64-NEXT: i32.const 31
; WASM64-NEXT: i32x4.shl
; WASM64-NEXT: i32.const 31
; WASM64-NEXT: i32x4.shr_s
-; WASM64-NEXT: local.tee 3
-; WASM64-NEXT: local.get 1
-; WASM64-NEXT: v128.load 0:p2align=2
; WASM64-NEXT: v128.and
-; WASM64-NEXT: local.get 2
-; WASM64-NEXT: v128.load 0:p2align=2
-; WASM64-NEXT: local.get 3
-; WASM64-NEXT: v128.andnot
-; WASM64-NEXT: v128.or
+; WASM64-NEXT: v128.xor
; WASM64-NEXT: # fallthrough-return
%a = load <4 x i32>, ptr %p1, align 4
%b = load <4 x i32>, ptr %p2, align 4
@@ -362,43 +338,39 @@ define <4 x i32> @test_ctselect_v4i32_unaligned_load(i1 %cond, ptr %p1, ptr %p2)
define void @test_ctselect_v4i32_store(i1 %cond, <4 x i32> %a, <4 x i32> %b, ptr %out) {
; WASM32-LABEL: test_ctselect_v4i32_store:
; WASM32: .functype test_ctselect_v4i32_store (i32, v128, v128, i32) -> ()
-; WASM32-NEXT: .local v128
; WASM32-NEXT: # %bb.0:
; WASM32-NEXT: local.get 3
+; WASM32-NEXT: local.get 2
+; WASM32-NEXT: local.get 1
+; WASM32-NEXT: local.get 2
+; WASM32-NEXT: v128.xor
; WASM32-NEXT: local.get 0
; WASM32-NEXT: i32x4.splat
; WASM32-NEXT: i32.const 31
; WASM32-NEXT: i32x4.shl
; WASM32-NEXT: i32.const 31
; WASM32-NEXT: i32x4.shr_s
-; WASM32-NEXT: local.tee 4
-; WASM32-NEXT: local.get 1
; WASM32-NEXT: v128.and
-; WASM32-NEXT: local.get 2
-; WASM32-NEXT: local.get 4
-; WASM32-NEXT: v128.andnot
-; WASM32-NEXT: v128.or
+; WASM32-NEXT: v128.xor
; WASM32-NEXT: v128.store 0
; WASM32-NEXT: # fallthrough-return
;
; WASM64-LABEL: test_ctselect_v4i32_store:
; WASM64: .functype test_ctselect_v4i32_store (i32, v128, v128, i64) -> ()
-; WASM64-NEXT: .local v128
; WASM64-NEXT: # %bb.0:
; WASM64-NEXT: local.get 3
+; WASM64-NEXT: local.get 2
+; WASM64-NEXT: local.get 1
+; WASM64-NEXT: local.get 2
+; WASM64-NEXT: v128.xor
; WASM64-NEXT: local.get 0
; WASM64-NEXT: i32x4.splat
; WASM64-NEXT: i32.const 31
; WASM64-NEXT: i32x4.shl
; WASM64-NEXT: i32.const 31
; WASM64-NEXT: i32x4.shr_s
-; WASM64-NEXT: local.tee 4
-; WASM64-NEXT: local.get 1
; WASM64-NEXT: v128.and
-; WASM64-NEXT: local.get 2
-; WASM64-NEXT: local.get 4
-; WASM64-NEXT: v128.andnot
-; WASM64-NEXT: v128.or
+; WASM64-NEXT: v128.xor
; WASM64-NEXT: v128.store 0
; WASM64-NEXT: # fallthrough-return
%result = call <4 x i32> @llvm.ct.select.v4i32(i1 %cond, <4 x i32> %a, <4 x i32> %b)
@@ -410,64 +382,58 @@ define void @test_ctselect_v4i32_store(i1 %cond, <4 x i32> %a, <4 x i32> %b, ptr
define <4 x i32> @test_ctselect_v4i32_chain(i1 %cond1, i1 %cond2, <4 x i32> %a, <4 x i32> %b, <4 x i32> %c) {
; WASM32-LABEL: test_ctselect_v4i32_chain:
; WASM32: .functype test_ctselect_v4i32_chain (i32, i32, v128, v128, v128) -> (v128)
-; WASM32-NEXT: .local v128, v128
; WASM32-NEXT: # %bb.0:
-; WASM32-NEXT: local.get 1
+; WASM32-NEXT: local.get 4
+; WASM32-NEXT: local.get 3
+; WASM32-NEXT: local.get 2
+; WASM32-NEXT: local.get 3
+; WASM32-NEXT: v128.xor
+; WASM32-NEXT: local.get 0
; WASM32-NEXT: i32x4.splat
; WASM32-NEXT: i32.const 31
; WASM32-NEXT: i32x4.shl
; WASM32-NEXT: i32.const 31
; WASM32-NEXT: i32x4.shr_s
-; WASM32-NEXT: local.tee 5
-; WASM32-NEXT: local.get 0
+; WASM32-NEXT: v128.and
+; WASM32-NEXT: v128.xor
+; WASM32-NEXT: local.get 4
+; WASM32-NEXT: v128.xor
+; WASM32-NEXT: local.get 1
; WASM32-NEXT: i32x4.splat
; WASM32-NEXT: i32.const 31
; WASM32-NEXT: i32x4.shl
; WASM32-NEXT: i32.const 31
; WASM32-NEXT: i32x4.shr_s
-; WASM32-NEXT: local.tee 6
-; WASM32-NEXT: local.get 2
-; WASM32-NEXT: v128.and
-; WASM32-NEXT: local.get 3
-; WASM32-NEXT: local.get 6
-; WASM32-NEXT: v128.andnot
-; WASM32-NEXT: v128.or
; WASM32-NEXT: v128.and
-; WASM32-NEXT: local.get 4
-; WASM32-NEXT: local.get 5
-; WASM32-NEXT: v128.andnot
-; WASM32-NEXT: v128.or
+; WASM32-NEXT: v128.xor
; WASM32-NEXT: # fallthrough-return
;
; WASM64-LABEL: test_ctselect_v4i32_chain:
; WASM64: .functype test_ctselect_v4i32_chain (i32, i32, v128, v128, v128) -> (v128)
-; WASM64-NEXT: .local v128, v128
; WASM64-NEXT: # %bb.0:
-; WASM64-NEXT: local.get 1
+; WASM64-NEXT: local.get 4
+; WASM64-NEXT: local.get 3
+; WASM64-NEXT: local.get 2
+; WASM64-NEXT: local.get 3
+; WASM64-NEXT: v128.xor
+; WASM64-NEXT: local.get 0
; WASM64-NEXT: i32x4.splat
; WASM64-NEXT: i32.const 31
; WASM64-NEXT: i32x4.shl
; WASM64-NEXT: i32.const 31
; WASM64-NEXT: i32x4.shr_s
-; WASM64-NEXT: local.tee 5
-; WASM64-NEXT: local.get 0
+; WASM64-NEXT: v128.and
+; WASM64-NEXT: v128.xor
+; WASM64-NEXT: local.get 4
+; WASM64-NEXT: v128.xor
+; WASM64-NEXT: local.get 1
; WASM64-NEXT: i32x4.splat
; WASM64-NEXT: i32.const 31
; WASM64-NEXT: i32x4.shl
; WASM64-NEXT: i32.const 31
; WASM64-NEXT: i32x4.shr_s
-; WASM64-NEXT: local.tee 6
-; WASM64-NEXT: local.get 2
-; WASM64-NEXT: v128.and
-; WASM64-NEXT: local.get 3
-; WASM64-NEXT: local.get 6
-; WASM64-NEXT: v128.andnot
-; WASM64-NEXT: v128.or
; WASM64-NEXT: v128.and
-; WASM64-NEXT: local.get 4
-; WASM64-NEXT: local.get 5
-; WASM64-NEXT: v128.andnot
-; WASM64-NEXT: v128.or
+; WASM64-NEXT: v128.xor
; WASM64-NEXT: # fallthrough-return
%tmp = call <4 x i32> @llvm.ct.select.v4i32(i1 %cond1, <4 x i32> %a, <4 x i32> %b)
%result = call <4 x i32> @llvm.ct.select.v4i32(i1 %cond2, <4 x i32> %tmp, <4 x i32> %c)
@@ -480,46 +446,46 @@ define <4 x float> @test_ctselect_v4f32_arithmetic(i1 %cond, <4 x float> %x, <4
; WASM32: .functype test_ctselect_v4f32_arithmetic (i32, v128, v128) -> (v128)
; WASM32-NEXT: .local v128
; WASM32-NEXT: # %bb.0:
+; WASM32-NEXT: local.get 1
+; WASM32-NEXT: local.get 2
+; WASM32-NEXT: f32x4.sub
+; WASM32-NEXT: local.tee 3
+; WASM32-NEXT: local.get 3
+; WASM32-NEXT: local.get 1
+; WASM32-NEXT: local.get 2
+; WASM32-NEXT: f32x4.add
+; WASM32-NEXT: v128.xor
; WASM32-NEXT: local.get 0
; WASM32-NEXT: i32x4.splat
; WASM32-NEXT: i32.const 31
; WASM32-NEXT: i32x4.shl
; WASM32-NEXT: i32.const 31
; WASM32-NEXT: i32x4.shr_s
-; WASM32-NEXT: local.tee 3
-; WASM32-NEXT: local.get 1
-; WASM32-NEXT: local.get 2
-; WASM32-NEXT: f32x4.add
; WASM32-NEXT: v128.and
-; WASM32-NEXT: local.get 1
-; WASM32-NEXT: local.get 2
-; WASM32-NEXT: f32x4.sub
-; WASM32-NEXT: local.get 3
-; WASM32-NEXT: v128.andnot
-; WASM32-NEXT: v128.or
+; WASM32-NEXT: v128.xor
; WASM32-NEXT: # fallthrough-return
;
; WASM64-LABEL: test_ctselect_v4f32_arithmetic:
; WASM64: .functype test_ctselect_v4f32_arithmetic (i32, v128, v128) -> (v128)
; WASM64-NEXT: .local v128
; WASM64-NEXT: # %bb.0:
+; WASM64-NEXT: local.get 1
+; WASM64-NEXT: local.get 2
+; WASM64-NEXT: f32x4.sub
+; WASM64-NEXT: local.tee 3
+; WASM64-NEXT: local.get 3
+; WASM64-NEXT: local.get 1
+; WASM64-NEXT: local.get 2
+; WASM64-NEXT: f32x4.add
+; WASM64-NEXT: v128.xor
; WASM64-NEXT: local.get 0
; WASM64-NEXT: i32x4.splat
; WASM64-NEXT: i32.const 31
; WASM64-NEXT: i32x4.shl
; WASM64-NEXT: i32.const 31
; WASM64-NEXT: i32x4.shr_s
-; WASM64-NEXT: local.tee 3
-; WASM64-NEXT: local.get 1
-; WASM64-NEXT: local.get 2
-; WASM64-NEXT: f32x4.add
; WASM64-NEXT: v128.and
-; WASM64-NEXT: local.get 1
-; WASM64-NEXT: local.get 2
-; WASM64-NEXT: f32x4.sub
-; WASM64-NEXT: local.get 3
-; WASM64-NEXT: v128.andnot
-; WASM64-NEXT: v128.or
+; WASM64-NEXT: v128.xor
; WASM64-NEXT: # fallthrough-return
%sum = fadd <4 x float> %x, %y
%diff = fsub <4 x float> %x, %y
@@ -532,26 +498,26 @@ define <4 x i32> @test_ctselect_v4i32_zeros(i1 %cond, <4 x i32> %a) {
; WASM32-LABEL: test_ctselect_v4i32_zeros:
; WASM32: .functype test_ctselect_v4i32_zeros (i32, v128) -> (v128)
; WASM32-NEXT: # %bb.0:
+; WASM32-NEXT: local.get 1
; WASM32-NEXT: local.get 0
; WASM32-NEXT: i32x4.splat
; WASM32-NEXT: i32.const 31
; WASM32-NEXT: i32x4.shl
; WASM32-NEXT: i32.const 31
; WASM32-NEXT: i32x4.shr_s
-; WASM32-NEXT: local.get 1
; WASM32-NEXT: v128.and
; WASM32-NEXT: # fallthrough-return
;
; WASM64-LABEL: test_ctselect_v4i32_zeros:
; WASM64: .functype test_ctselect_v4i32_zeros (i32, v128) -> (v128)
; WASM64-NEXT: # %bb.0:
+; WASM64-NEXT: local.get 1
; WASM64-NEXT: local.get 0
; WASM64-NEXT: i32x4.splat
; WASM64-NEXT: i32.const 31
; WASM64-NEXT: i32x4.shl
; WASM64-NEXT: i32.const 31
; WASM64-NEXT: i32x4.shr_s
-; WASM64-NEXT: local.get 1
; WASM64-NEXT: v128.and
; WASM64-NEXT: # fallthrough-return
%result = call <4 x i32> @llvm.ct.select.v4i32(i1 %cond,
@@ -564,40 +530,36 @@ define <4 x i32> @test_ctselect_v4i32_zeros(i1 %cond, <4 x i32> %a) {
define <4 x i32> @test_ctselect_v4i32_args(i1 %cond, <4 x i32> %a, <4 x i32> %b) nounwind {
; WASM32-LABEL: test_ctselect_v4i32_args:
; WASM32: .functype test_ctselect_v4i32_args (i32, v128, v128) -> (v128)
-; WASM32-NEXT: .local v128
; WASM32-NEXT: # %bb.0:
+; WASM32-NEXT: local.get 2
+; WASM32-NEXT: local.get 1
+; WASM32-NEXT: local.get 2
+; WASM32-NEXT: v128.xor
; WASM32-NEXT: local.get 0
; WASM32-NEXT: i32x4.splat
; WASM32-NEXT: i32.const 31
; WASM32-NEXT: i32x4.shl
; WASM32-NEXT: i32.const 31
; WASM32-NEXT: i32x4.shr_s
-; WASM32-NEXT: local.tee 3
-; WASM32-NEXT: local.get 1
; WASM32-NEXT: v128.and
-; WASM32-NEXT: local.get 2
-; WASM32-NEXT: local.get 3
-; WASM32-NEXT: v128.andnot
-; WASM32-NEXT: v128.or
+; WASM32-NEXT: v128.xor
; WASM32-NEXT: # fallthrough-return
;
; WASM64-LABEL: test_ctselect_v4i32_args:
; WASM64: .functype test_ctselect_v4i32_args (i32, v128, v128) -> (v128)
-; WASM64-NEXT: .local v128
; WASM64-NEXT: # %bb.0:
+; WASM64-NEXT: local.get 2
+; WASM64-NEXT: local.get 1
+; WASM64-NEXT: local.get 2
+; WASM64-NEXT: v128.xor
; WASM64-NEXT: local.get 0
; WASM64-NEXT: i32x4.splat
; WASM64-NEXT: i32.const 31
; WASM64-NEXT: i32x4.shl
; WASM64-NEXT: i32.const 31
; WASM64-NEXT: i32x4.shr_s
-; WASM64-NEXT: local.tee 3
-; WASM64-NEXT: local.get 1
; WASM64-NEXT: v128.and
-; WASM64-NEXT: local.get 2
-; WASM64-NEXT: local.get 3
-; WASM64-NEXT: v128.andnot
-; WASM64-NEXT: v128.or
+; WASM64-NEXT: v128.xor
; WASM64-NEXT: # fallthrough-return
%result = call <4 x i32> @llvm.ct.select.v4i32(i1 %cond, <4 x i32> %a, <4 x i32> %b)
ret <4 x i32> %result
@@ -607,45 +569,41 @@ define <4 x i32> @test_ctselect_v4i32_args(i1 %cond, <4 x i32> %a, <4 x i32> %b)
define <4 x i32> @test_ctselect_v4i32_multi_use(i1 %cond, <4 x i32> %a, <4 x i32> %b) {
; WASM32-LABEL: test_ctselect_v4i32_multi_use:
; WASM32: .functype test_ctselect_v4i32_multi_use (i32, v128, v128) -> (v128)
-; WASM32-NEXT: .local v128
; WASM32-NEXT: # %bb.0:
+; WASM32-NEXT: local.get 2
+; WASM32-NEXT: local.get 1
+; WASM32-NEXT: local.get 2
+; WASM32-NEXT: v128.xor
; WASM32-NEXT: local.get 0
; WASM32-NEXT: i32x4.splat
; WASM32-NEXT: i32.const 31
; WASM32-NEXT: i32x4.shl
; WASM32-NEXT: i32.const 31
; WASM32-NEXT: i32x4.shr_s
-; WASM32-NEXT: local.tee 3
-; WASM32-NEXT: local.get 1
; WASM32-NEXT: v128.and
+; WASM32-NEXT: v128.xor
+; WASM32-NEXT: local.tee 2
; WASM32-NEXT: local.get 2
-; WASM32-NEXT: local.get 3
-; WASM32-NEXT: v128.andnot
-; WASM32-NEXT: v128.or
-; WASM32-NEXT: local.tee 1
-; WASM32-NEXT: local.get 1
; WASM32-NEXT: i32x4.add
; WASM32-NEXT: # fallthrough-return
;
; WASM64-LABEL: test_ctselect_v4i32_multi_use:
; WASM64: .functype test_ctselect_v4i32_multi_use (i32, v128, v128) -> (v128)
-; WASM64-NEXT: .local v128
; WASM64-NEXT: # %bb.0:
+; WASM64-NEXT: local.get 2
+; WASM64-NEXT: local.get 1
+; WASM64-NEXT: local.get 2
+; WASM64-NEXT: v128.xor
; WASM64-NEXT: local.get 0
; WASM64-NEXT: i32x4.splat
; WASM64-NEXT: i32.const 31
; WASM64-NEXT: i32x4.shl
; WASM64-NEXT: i32.const 31
; WASM64-NEXT: i32x4.shr_s
-; WASM64-NEXT: local.tee 3
-; WASM64-NEXT: local.get 1
; WASM64-NEXT: v128.and
+; WASM64-NEXT: v128.xor
+; WASM64-NEXT: local.tee 2
; WASM64-NEXT: local.get 2
-; WASM64-NEXT: local.get 3
-; WASM64-NEXT: v128.andnot
-; WASM64-NEXT: v128.or
-; WASM64-NEXT: local.tee 1
-; WASM64-NEXT: local.get 1
; WASM64-NEXT: i32x4.add
; WASM64-NEXT: # fallthrough-return
%sel = call <4 x i32> @llvm.ct.select.v4i32(i1 %cond, <4 x i32> %a, <4 x i32> %b)
@@ -659,46 +617,46 @@ define <16 x i8> @test_ctselect_v16i8_ops(i1 %cond, <16 x i8> %x, <16 x i8> %y)
; WASM32: .functype test_ctselect_v16i8_ops (i32, v128, v128) -> (v128)
; WASM32-NEXT: .local v128
; WASM32-NEXT: # %bb.0:
+; WASM32-NEXT: local.get 1
+; WASM32-NEXT: local.get 2
+; WASM32-NEXT: v128.and
+; WASM32-NEXT: local.tee 3
+; WASM32-NEXT: local.get 3
+; WASM32-NEXT: local.get 1
+; WASM32-NEXT: local.get 2
+; WASM32-NEXT: v128.xor
+; WASM32-NEXT: v128.xor
; WASM32-NEXT: local.get 0
; WASM32-NEXT: i8x16.splat
; WASM32-NEXT: i32.const 7
; WASM32-NEXT: i8x16.shl
; WASM32-NEXT: i32.const 7
; WASM32-NEXT: i8x16.shr_s
-; WASM32-NEXT: local.tee 3
-; WASM32-NEXT: local.get 1
-; WASM32-NEXT: local.get 2
-; WASM32-NEXT: v128.xor
; WASM32-NEXT: v128.and
-; WASM32-NEXT: local.get 1
-; WASM32-NEXT: local.get 2
-; WASM32-NEXT: v128.and
-; WASM32-NEXT: local.get 3
-; WASM32-NEXT: v128.andnot
-; WASM32-NEXT: v128.or
+; WASM32-NEXT: v128.xor
; WASM32-NEXT: # fallthrough-return
;
; WASM64-LABEL: test_ctselect_v16i8_ops:
; WASM64: .functype test_ctselect_v16i8_ops (i32, v128, v128) -> (v128)
; WASM64-NEXT: .local v128
; WASM64-NEXT: # %bb.0:
+; WASM64-NEXT: local.get 1
+; WASM64-NEXT: local.get 2
+; WASM64-NEXT: v128.and
+; WASM64-NEXT: local.tee 3
+; WASM64-NEXT: local.get 3
+; WASM64-NEXT: local.get 1
+; WASM64-NEXT: local.get 2
+; WASM64-NEXT: v128.xor
+; WASM64-NEXT: v128.xor
; WASM64-NEXT: local.get 0
; WASM64-NEXT: i8x16.splat
; WASM64-NEXT: i32.const 7
; WASM64-NEXT: i8x16.shl
; WASM64-NEXT: i32.const 7
; WASM64-NEXT: i8x16.shr_s
-; WASM64-NEXT: local.tee 3
-; WASM64-NEXT: local.get 1
-; WASM64-NEXT: local.get 2
-; WASM64-NEXT: v128.xor
; WASM64-NEXT: v128.and
-; WASM64-NEXT: local.get 1
-; WASM64-NEXT: local.get 2
-; WASM64-NEXT: v128.and
-; WASM64-NEXT: local.get 3
-; WASM64-NEXT: v128.andnot
-; WASM64-NEXT: v128.or
+; WASM64-NEXT: v128.xor
; WASM64-NEXT: # fallthrough-return
%xor = xor <16 x i8> %x, %y
%and = and <16 x i8> %x, %y
diff --git a/llvm/test/CodeGen/WebAssembly/ctselect-fallback.ll b/llvm/test/CodeGen/WebAssembly/ctselect-fallback.ll
index bd318960536df..29c3dc6e6aa02 100644
--- a/llvm/test/CodeGen/WebAssembly/ctselect-fallback.ll
+++ b/llvm/test/CodeGen/WebAssembly/ctselect-fallback.ll
@@ -7,6 +7,7 @@ define i8 @test_ctselect_i8(i1 %cond, i8 %a, i8 %b) {
; W32-LABEL: test_ctselect_i8:
; W32: .functype test_ctselect_i8 (i32, i32, i32) -> (i32)
; W32-NEXT: # %bb.0:
+; W32-NEXT: local.get 2
; W32-NEXT: local.get 1
; W32-NEXT: local.get 2
; W32-NEXT: i32.xor
@@ -16,13 +17,13 @@ define i8 @test_ctselect_i8(i1 %cond, i8 %a, i8 %b) {
; W32-NEXT: i32.and
; W32-NEXT: i32.sub
; W32-NEXT: i32.and
-; W32-NEXT: local.get 2
; W32-NEXT: i32.xor
; W32-NEXT: # fallthrough-return
;
; W64-LABEL: test_ctselect_i8:
; W64: .functype test_ctselect_i8 (i32, i32, i32) -> (i32)
; W64-NEXT: # %bb.0:
+; W64-NEXT: local.get 2
; W64-NEXT: local.get 1
; W64-NEXT: local.get 2
; W64-NEXT: i32.xor
@@ -32,7 +33,6 @@ define i8 @test_ctselect_i8(i1 %cond, i8 %a, i8 %b) {
; W64-NEXT: i32.and
; W64-NEXT: i32.sub
; W64-NEXT: i32.and
-; W64-NEXT: local.get 2
; W64-NEXT: i32.xor
; W64-NEXT: # fallthrough-return
%result = call i8 @llvm.ct.select.i8(i1 %cond, i8 %a, i8 %b)
@@ -43,6 +43,7 @@ define i16 @test_ctselect_i16(i1 %cond, i16 %a, i16 %b) {
; W32-LABEL: test_ctselect_i16:
; W32: .functype test_ctselect_i16 (i32, i32, i32) -> (i32)
; W32-NEXT: # %bb.0:
+; W32-NEXT: local.get 2
; W32-NEXT: local.get 1
; W32-NEXT: local.get 2
; W32-NEXT: i32.xor
@@ -52,13 +53,13 @@ define i16 @test_ctselect_i16(i1 %cond, i16 %a, i16 %b) {
; W32-NEXT: i32.and
; W32-NEXT: i32.sub
; W32-NEXT: i32.and
-; W32-NEXT: local.get 2
; W32-NEXT: i32.xor
; W32-NEXT: # fallthrough-return
;
; W64-LABEL: test_ctselect_i16:
; W64: .functype test_ctselect_i16 (i32, i32, i32) -> (i32)
; W64-NEXT: # %bb.0:
+; W64-NEXT: local.get 2
; W64-NEXT: local.get 1
; W64-NEXT: local.get 2
; W64-NEXT: i32.xor
@@ -68,7 +69,6 @@ define i16 @test_ctselect_i16(i1 %cond, i16 %a, i16 %b) {
; W64-NEXT: i32.and
; W64-NEXT: i32.sub
; W64-NEXT: i32.and
-; W64-NEXT: local.get 2
; W64-NEXT: i32.xor
; W64-NEXT: # fallthrough-return
%result = call i16 @llvm.ct.select.i16(i1 %cond, i16 %a, i16 %b)
@@ -79,39 +79,33 @@ define i32 @test_ctselect_i32(i1 %cond, i32 %a, i32 %b) {
; W32-LABEL: test_ctselect_i32:
; W32: .functype test_ctselect_i32 (i32, i32, i32) -> (i32)
; W32-NEXT: # %bb.0:
+; W32-NEXT: local.get 2
+; W32-NEXT: local.get 1
+; W32-NEXT: local.get 2
+; W32-NEXT: i32.xor
; W32-NEXT: i32.const 0
; W32-NEXT: local.get 0
; W32-NEXT: i32.const 1
; W32-NEXT: i32.and
-; W32-NEXT: local.tee 0
; W32-NEXT: i32.sub
-; W32-NEXT: local.get 1
; W32-NEXT: i32.and
-; W32-NEXT: local.get 0
-; W32-NEXT: i32.const -1
-; W32-NEXT: i32.add
-; W32-NEXT: local.get 2
-; W32-NEXT: i32.and
-; W32-NEXT: i32.or
+; W32-NEXT: i32.xor
; W32-NEXT: # fallthrough-return
;
; W64-LABEL: test_ctselect_i32:
; W64: .functype test_ctselect_i32 (i32, i32, i32) -> (i32)
; W64-NEXT: # %bb.0:
+; W64-NEXT: local.get 2
+; W64-NEXT: local.get 1
+; W64-NEXT: local.get 2
+; W64-NEXT: i32.xor
; W64-NEXT: i32.const 0
; W64-NEXT: local.get 0
; W64-NEXT: i32.const 1
; W64-NEXT: i32.and
-; W64-NEXT: local.tee 0
; W64-NEXT: i32.sub
-; W64-NEXT: local.get 1
-; W64-NEXT: i32.and
-; W64-NEXT: local.get 0
-; W64-NEXT: i32.const -1
-; W64-NEXT: i32.add
-; W64-NEXT: local.get 2
; W64-NEXT: i32.and
-; W64-NEXT: i32.or
+; W64-NEXT: i32.xor
; W64-NEXT: # fallthrough-return
%result = call i32 @llvm.ct.select.i32(i1 %cond, i32 %a, i32 %b)
ret i32 %result
@@ -120,44 +114,36 @@ define i32 @test_ctselect_i32(i1 %cond, i32 %a, i32 %b) {
define i64 @test_ctselect_i64(i1 %cond, i64 %a, i64 %b) {
; W32-LABEL: test_ctselect_i64:
; W32: .functype test_ctselect_i64 (i32, i64, i64) -> (i64)
-; W32-NEXT: .local i64
; W32-NEXT: # %bb.0:
+; W32-NEXT: local.get 2
+; W32-NEXT: local.get 1
+; W32-NEXT: local.get 2
+; W32-NEXT: i64.xor
; W32-NEXT: i64.const 0
; W32-NEXT: local.get 0
; W32-NEXT: i64.extend_i32_u
; W32-NEXT: i64.const 1
; W32-NEXT: i64.and
-; W32-NEXT: local.tee 3
; W32-NEXT: i64.sub
-; W32-NEXT: local.get 1
-; W32-NEXT: i64.and
-; W32-NEXT: local.get 3
-; W32-NEXT: i64.const -1
-; W32-NEXT: i64.add
-; W32-NEXT: local.get 2
; W32-NEXT: i64.and
-; W32-NEXT: i64.or
+; W32-NEXT: i64.xor
; W32-NEXT: # fallthrough-return
;
; W64-LABEL: test_ctselect_i64:
; W64: .functype test_ctselect_i64 (i32, i64, i64) -> (i64)
-; W64-NEXT: .local i64
; W64-NEXT: # %bb.0:
+; W64-NEXT: local.get 2
+; W64-NEXT: local.get 1
+; W64-NEXT: local.get 2
+; W64-NEXT: i64.xor
; W64-NEXT: i64.const 0
; W64-NEXT: local.get 0
; W64-NEXT: i64.extend_i32_u
; W64-NEXT: i64.const 1
; W64-NEXT: i64.and
-; W64-NEXT: local.tee 3
; W64-NEXT: i64.sub
-; W64-NEXT: local.get 1
; W64-NEXT: i64.and
-; W64-NEXT: local.get 3
-; W64-NEXT: i64.const -1
-; W64-NEXT: i64.add
-; W64-NEXT: local.get 2
-; W64-NEXT: i64.and
-; W64-NEXT: i64.or
+; W64-NEXT: i64.xor
; W64-NEXT: # fallthrough-return
%result = call i64 @llvm.ct.select.i64(i1 %cond, i64 %a, i64 %b)
ret i64 %result
@@ -167,41 +153,34 @@ define ptr @test_ctselect_ptr(i1 %cond, ptr %a, ptr %b) {
; W32-LABEL: test_ctselect_ptr:
; W32: .functype test_ctselect_ptr (i32, i32, i32) -> (i32)
; W32-NEXT: # %bb.0:
+; W32-NEXT: local.get 2
+; W32-NEXT: local.get 1
+; W32-NEXT: local.get 2
+; W32-NEXT: i32.xor
; W32-NEXT: i32.const 0
; W32-NEXT: local.get 0
; W32-NEXT: i32.const 1
; W32-NEXT: i32.and
-; W32-NEXT: local.tee 0
; W32-NEXT: i32.sub
-; W32-NEXT: local.get 1
-; W32-NEXT: i32.and
-; W32-NEXT: local.get 0
-; W32-NEXT: i32.const -1
-; W32-NEXT: i32.add
-; W32-NEXT: local.get 2
; W32-NEXT: i32.and
-; W32-NEXT: i32.or
+; W32-NEXT: i32.xor
; W32-NEXT: # fallthrough-return
;
; W64-LABEL: test_ctselect_ptr:
; W64: .functype test_ctselect_ptr (i32, i64, i64) -> (i64)
-; W64-NEXT: .local i64
; W64-NEXT: # %bb.0:
+; W64-NEXT: local.get 2
+; W64-NEXT: local.get 1
+; W64-NEXT: local.get 2
+; W64-NEXT: i64.xor
; W64-NEXT: i64.const 0
; W64-NEXT: local.get 0
; W64-NEXT: i64.extend_i32_u
; W64-NEXT: i64.const 1
; W64-NEXT: i64.and
-; W64-NEXT: local.tee 3
; W64-NEXT: i64.sub
-; W64-NEXT: local.get 1
-; W64-NEXT: i64.and
-; W64-NEXT: local.get 3
-; W64-NEXT: i64.const -1
-; W64-NEXT: i64.add
-; W64-NEXT: local.get 2
; W64-NEXT: i64.and
-; W64-NEXT: i64.or
+; W64-NEXT: i64.xor
; W64-NEXT: # fallthrough-return
%result = call ptr @llvm.ct.select.p0(i1 %cond, ptr %a, ptr %b)
ret ptr %result
@@ -228,17 +207,13 @@ define i32 @test_ctselect_const_false(i32 %a, i32 %b) {
; W32-LABEL: test_ctselect_const_false:
; W32: .functype test_ctselect_const_false (i32, i32) -> (i32)
; W32-NEXT: # %bb.0:
-; W32-NEXT: i32.const 0
; W32-NEXT: local.get 1
-; W32-NEXT: i32.or
; W32-NEXT: # fallthrough-return
;
; W64-LABEL: test_ctselect_const_false:
; W64: .functype test_ctselect_const_false (i32, i32) -> (i32)
; W64-NEXT: # %bb.0:
-; W64-NEXT: i32.const 0
; W64-NEXT: local.get 1
-; W64-NEXT: i32.or
; W64-NEXT: # fallthrough-return
%result = call i32 @llvm.ct.select.i32(i1 false, i32 %a, i32 %b)
ret i32 %result
@@ -249,41 +224,33 @@ define i32 @test_ctselect_icmp_eq(i32 %x, i32 %y, i32 %a, i32 %b) {
; W32-LABEL: test_ctselect_icmp_eq:
; W32: .functype test_ctselect_icmp_eq (i32, i32, i32, i32) -> (i32)
; W32-NEXT: # %bb.0:
-; W32-NEXT: i32.const -1
+; W32-NEXT: local.get 3
+; W32-NEXT: local.get 2
+; W32-NEXT: local.get 3
+; W32-NEXT: i32.xor
; W32-NEXT: i32.const 0
; W32-NEXT: local.get 0
; W32-NEXT: local.get 1
; W32-NEXT: i32.eq
-; W32-NEXT: i32.select
-; W32-NEXT: local.tee 1
-; W32-NEXT: local.get 2
+; W32-NEXT: i32.sub
; W32-NEXT: i32.and
-; W32-NEXT: local.get 1
-; W32-NEXT: i32.const -1
; W32-NEXT: i32.xor
-; W32-NEXT: local.get 3
-; W32-NEXT: i32.and
-; W32-NEXT: i32.or
; W32-NEXT: # fallthrough-return
;
; W64-LABEL: test_ctselect_icmp_eq:
; W64: .functype test_ctselect_icmp_eq (i32, i32, i32, i32) -> (i32)
; W64-NEXT: # %bb.0:
-; W64-NEXT: i32.const -1
+; W64-NEXT: local.get 3
+; W64-NEXT: local.get 2
+; W64-NEXT: local.get 3
+; W64-NEXT: i32.xor
; W64-NEXT: i32.const 0
; W64-NEXT: local.get 0
; W64-NEXT: local.get 1
; W64-NEXT: i32.eq
-; W64-NEXT: i32.select
-; W64-NEXT: local.tee 1
-; W64-NEXT: local.get 2
+; W64-NEXT: i32.sub
; W64-NEXT: i32.and
-; W64-NEXT: local.get 1
-; W64-NEXT: i32.const -1
; W64-NEXT: i32.xor
-; W64-NEXT: local.get 3
-; W64-NEXT: i32.and
-; W64-NEXT: i32.or
; W64-NEXT: # fallthrough-return
%cond = icmp eq i32 %x, %y
%result = call i32 @llvm.ct.select.i32(i1 %cond, i32 %a, i32 %b)
@@ -294,41 +261,33 @@ define i32 @test_ctselect_icmp_ne(i32 %x, i32 %y, i32 %a, i32 %b) {
; W32-LABEL: test_ctselect_icmp_ne:
; W32: .functype test_ctselect_icmp_ne (i32, i32, i32, i32) -> (i32)
; W32-NEXT: # %bb.0:
-; W32-NEXT: i32.const -1
+; W32-NEXT: local.get 3
+; W32-NEXT: local.get 2
+; W32-NEXT: local.get 3
+; W32-NEXT: i32.xor
; W32-NEXT: i32.const 0
; W32-NEXT: local.get 0
; W32-NEXT: local.get 1
; W32-NEXT: i32.ne
-; W32-NEXT: i32.select
-; W32-NEXT: local.tee 1
-; W32-NEXT: local.get 2
+; W32-NEXT: i32.sub
; W32-NEXT: i32.and
-; W32-NEXT: local.get 1
-; W32-NEXT: i32.const -1
; W32-NEXT: i32.xor
-; W32-NEXT: local.get 3
-; W32-NEXT: i32.and
-; W32-NEXT: i32.or
; W32-NEXT: # fallthrough-return
;
; W64-LABEL: test_ctselect_icmp_ne:
; W64: .functype test_ctselect_icmp_ne (i32, i32, i32, i32) -> (i32)
; W64-NEXT: # %bb.0:
-; W64-NEXT: i32.const -1
+; W64-NEXT: local.get 3
+; W64-NEXT: local.get 2
+; W64-NEXT: local.get 3
+; W64-NEXT: i32.xor
; W64-NEXT: i32.const 0
; W64-NEXT: local.get 0
; W64-NEXT: local.get 1
; W64-NEXT: i32.ne
-; W64-NEXT: i32.select
-; W64-NEXT: local.tee 1
-; W64-NEXT: local.get 2
+; W64-NEXT: i32.sub
; W64-NEXT: i32.and
-; W64-NEXT: local.get 1
-; W64-NEXT: i32.const -1
; W64-NEXT: i32.xor
-; W64-NEXT: local.get 3
-; W64-NEXT: i32.and
-; W64-NEXT: i32.or
; W64-NEXT: # fallthrough-return
%cond = icmp ne i32 %x, %y
%result = call i32 @llvm.ct.select.i32(i1 %cond, i32 %a, i32 %b)
@@ -339,41 +298,33 @@ define i32 @test_ctselect_icmp_slt(i32 %x, i32 %y, i32 %a, i32 %b) {
; W32-LABEL: test_ctselect_icmp_slt:
; W32: .functype test_ctselect_icmp_slt (i32, i32, i32, i32) -> (i32)
; W32-NEXT: # %bb.0:
-; W32-NEXT: i32.const -1
+; W32-NEXT: local.get 3
+; W32-NEXT: local.get 2
+; W32-NEXT: local.get 3
+; W32-NEXT: i32.xor
; W32-NEXT: i32.const 0
; W32-NEXT: local.get 0
; W32-NEXT: local.get 1
; W32-NEXT: i32.lt_s
-; W32-NEXT: i32.select
-; W32-NEXT: local.tee 1
-; W32-NEXT: local.get 2
+; W32-NEXT: i32.sub
; W32-NEXT: i32.and
-; W32-NEXT: local.get 1
-; W32-NEXT: i32.const -1
; W32-NEXT: i32.xor
-; W32-NEXT: local.get 3
-; W32-NEXT: i32.and
-; W32-NEXT: i32.or
; W32-NEXT: # fallthrough-return
;
; W64-LABEL: test_ctselect_icmp_slt:
; W64: .functype test_ctselect_icmp_slt (i32, i32, i32, i32) -> (i32)
; W64-NEXT: # %bb.0:
-; W64-NEXT: i32.const -1
+; W64-NEXT: local.get 3
+; W64-NEXT: local.get 2
+; W64-NEXT: local.get 3
+; W64-NEXT: i32.xor
; W64-NEXT: i32.const 0
; W64-NEXT: local.get 0
; W64-NEXT: local.get 1
; W64-NEXT: i32.lt_s
-; W64-NEXT: i32.select
-; W64-NEXT: local.tee 1
-; W64-NEXT: local.get 2
+; W64-NEXT: i32.sub
; W64-NEXT: i32.and
-; W64-NEXT: local.get 1
-; W64-NEXT: i32.const -1
; W64-NEXT: i32.xor
-; W64-NEXT: local.get 3
-; W64-NEXT: i32.and
-; W64-NEXT: i32.or
; W64-NEXT: # fallthrough-return
%cond = icmp slt i32 %x, %y
%result = call i32 @llvm.ct.select.i32(i1 %cond, i32 %a, i32 %b)
@@ -384,41 +335,33 @@ define i32 @test_ctselect_icmp_ult(i32 %x, i32 %y, i32 %a, i32 %b) {
; W32-LABEL: test_ctselect_icmp_ult:
; W32: .functype test_ctselect_icmp_ult (i32, i32, i32, i32) -> (i32)
; W32-NEXT: # %bb.0:
-; W32-NEXT: i32.const -1
+; W32-NEXT: local.get 3
+; W32-NEXT: local.get 2
+; W32-NEXT: local.get 3
+; W32-NEXT: i32.xor
; W32-NEXT: i32.const 0
; W32-NEXT: local.get 0
; W32-NEXT: local.get 1
; W32-NEXT: i32.lt_u
-; W32-NEXT: i32.select
-; W32-NEXT: local.tee 1
-; W32-NEXT: local.get 2
+; W32-NEXT: i32.sub
; W32-NEXT: i32.and
-; W32-NEXT: local.get 1
-; W32-NEXT: i32.const -1
; W32-NEXT: i32.xor
-; W32-NEXT: local.get 3
-; W32-NEXT: i32.and
-; W32-NEXT: i32.or
; W32-NEXT: # fallthrough-return
;
; W64-LABEL: test_ctselect_icmp_ult:
; W64: .functype test_ctselect_icmp_ult (i32, i32, i32, i32) -> (i32)
; W64-NEXT: # %bb.0:
-; W64-NEXT: i32.const -1
+; W64-NEXT: local.get 3
+; W64-NEXT: local.get 2
+; W64-NEXT: local.get 3
+; W64-NEXT: i32.xor
; W64-NEXT: i32.const 0
; W64-NEXT: local.get 0
; W64-NEXT: local.get 1
; W64-NEXT: i32.lt_u
-; W64-NEXT: i32.select
-; W64-NEXT: local.tee 1
-; W64-NEXT: local.get 2
+; W64-NEXT: i32.sub
; W64-NEXT: i32.and
-; W64-NEXT: local.get 1
-; W64-NEXT: i32.const -1
; W64-NEXT: i32.xor
-; W64-NEXT: local.get 3
-; W64-NEXT: i32.and
-; W64-NEXT: i32.or
; W64-NEXT: # fallthrough-return
%cond = icmp ult i32 %x, %y
%result = call i32 @llvm.ct.select.i32(i1 %cond, i32 %a, i32 %b)
@@ -430,43 +373,40 @@ define i32 @test_ctselect_load(i1 %cond, ptr %p1, ptr %p2) {
; W32-LABEL: test_ctselect_load:
; W32: .functype test_ctselect_load (i32, i32, i32) -> (i32)
; W32-NEXT: # %bb.0:
+; W32-NEXT: local.get 2
+; W32-NEXT: i32.load 0
+; W32-NEXT: local.tee 2
+; W32-NEXT: local.get 2
+; W32-NEXT: local.get 1
+; W32-NEXT: i32.load 0
+; W32-NEXT: i32.xor
; W32-NEXT: i32.const 0
; W32-NEXT: local.get 0
; W32-NEXT: i32.const 1
; W32-NEXT: i32.and
-; W32-NEXT: local.tee 0
; W32-NEXT: i32.sub
-; W32-NEXT: local.get 1
-; W32-NEXT: i32.load 0
; W32-NEXT: i32.and
-; W32-NEXT: local.get 0
-; W32-NEXT: i32.const -1
-; W32-NEXT: i32.add
-; W32-NEXT: local.get 2
-; W32-NEXT: i32.load 0
-; W32-NEXT: i32.and
-; W32-NEXT: i32.or
+; W32-NEXT: i32.xor
; W32-NEXT: # fallthrough-return
;
; W64-LABEL: test_ctselect_load:
; W64: .functype test_ctselect_load (i32, i64, i64) -> (i32)
+; W64-NEXT: .local i32
; W64-NEXT: # %bb.0:
+; W64-NEXT: local.get 2
+; W64-NEXT: i32.load 0
+; W64-NEXT: local.tee 3
+; W64-NEXT: local.get 3
+; W64-NEXT: local.get 1
+; W64-NEXT: i32.load 0
+; W64-NEXT: i32.xor
; W64-NEXT: i32.const 0
; W64-NEXT: local.get 0
; W64-NEXT: i32.const 1
; W64-NEXT: i32.and
-; W64-NEXT: local.tee 0
; W64-NEXT: i32.sub
-; W64-NEXT: local.get 1
-; W64-NEXT: i32.load 0
; W64-NEXT: i32.and
-; W64-NEXT: local.get 0
-; W64-NEXT: i32.const -1
-; W64-NEXT: i32.add
-; W64-NEXT: local.get 2
-; W64-NEXT: i32.load 0
-; W64-NEXT: i32.and
-; W64-NEXT: i32.or
+; W64-NEXT: i32.xor
; W64-NEXT: # fallthrough-return
%a = load i32, ptr %p1
%b = load i32, ptr %p2
@@ -479,65 +419,53 @@ define i32 @test_ctselect_nested(i1 %cond1, i1 %cond2, i32 %a, i32 %b, i32 %c) {
; W32-LABEL: test_ctselect_nested:
; W32: .functype test_ctselect_nested (i32, i32, i32, i32, i32) -> (i32)
; W32-NEXT: # %bb.0:
+; W32-NEXT: local.get 4
+; W32-NEXT: local.get 3
+; W32-NEXT: local.get 2
+; W32-NEXT: local.get 3
+; W32-NEXT: i32.xor
; W32-NEXT: i32.const 0
-; W32-NEXT: local.get 0
+; W32-NEXT: local.get 1
; W32-NEXT: i32.const 1
; W32-NEXT: i32.and
-; W32-NEXT: local.tee 0
; W32-NEXT: i32.sub
+; W32-NEXT: i32.and
+; W32-NEXT: i32.xor
+; W32-NEXT: local.get 4
+; W32-NEXT: i32.xor
; W32-NEXT: i32.const 0
-; W32-NEXT: local.get 1
+; W32-NEXT: local.get 0
; W32-NEXT: i32.const 1
; W32-NEXT: i32.and
-; W32-NEXT: local.tee 1
; W32-NEXT: i32.sub
-; W32-NEXT: local.get 2
-; W32-NEXT: i32.and
-; W32-NEXT: local.get 1
-; W32-NEXT: i32.const -1
-; W32-NEXT: i32.add
-; W32-NEXT: local.get 3
-; W32-NEXT: i32.and
-; W32-NEXT: i32.or
-; W32-NEXT: i32.and
-; W32-NEXT: local.get 0
-; W32-NEXT: i32.const -1
-; W32-NEXT: i32.add
-; W32-NEXT: local.get 4
; W32-NEXT: i32.and
-; W32-NEXT: i32.or
+; W32-NEXT: i32.xor
; W32-NEXT: # fallthrough-return
;
; W64-LABEL: test_ctselect_nested:
; W64: .functype test_ctselect_nested (i32, i32, i32, i32, i32) -> (i32)
; W64-NEXT: # %bb.0:
+; W64-NEXT: local.get 4
+; W64-NEXT: local.get 3
+; W64-NEXT: local.get 2
+; W64-NEXT: local.get 3
+; W64-NEXT: i32.xor
; W64-NEXT: i32.const 0
-; W64-NEXT: local.get 0
+; W64-NEXT: local.get 1
; W64-NEXT: i32.const 1
; W64-NEXT: i32.and
-; W64-NEXT: local.tee 0
; W64-NEXT: i32.sub
+; W64-NEXT: i32.and
+; W64-NEXT: i32.xor
+; W64-NEXT: local.get 4
+; W64-NEXT: i32.xor
; W64-NEXT: i32.const 0
-; W64-NEXT: local.get 1
+; W64-NEXT: local.get 0
; W64-NEXT: i32.const 1
; W64-NEXT: i32.and
-; W64-NEXT: local.tee 1
; W64-NEXT: i32.sub
-; W64-NEXT: local.get 2
-; W64-NEXT: i32.and
-; W64-NEXT: local.get 1
-; W64-NEXT: i32.const -1
-; W64-NEXT: i32.add
-; W64-NEXT: local.get 3
-; W64-NEXT: i32.and
-; W64-NEXT: i32.or
-; W64-NEXT: i32.and
-; W64-NEXT: local.get 0
-; W64-NEXT: i32.const -1
-; W64-NEXT: i32.add
-; W64-NEXT: local.get 4
; W64-NEXT: i32.and
-; W64-NEXT: i32.or
+; W64-NEXT: i32.xor
; W64-NEXT: # fallthrough-return
%inner = call i32 @llvm.ct.select.i32(i1 %cond2, i32 %a, i32 %b)
%result = call i32 @llvm.ct.select.i32(i1 %cond1, i32 %inner, i32 %c)
diff --git a/llvm/test/CodeGen/WebAssembly/ctselect-side-effects.ll b/llvm/test/CodeGen/WebAssembly/ctselect-side-effects.ll
index 5b20e892c64d2..a4d9f4cd0bf15 100644
--- a/llvm/test/CodeGen/WebAssembly/ctselect-side-effects.ll
+++ b/llvm/test/CodeGen/WebAssembly/ctselect-side-effects.ll
@@ -43,39 +43,33 @@ define i32 @test_protected_no_branch(i1 %cond, i32 %a, i32 %b) {
; W32-LABEL: test_protected_no_branch:
; W32: .functype test_protected_no_branch (i32, i32, i32) -> (i32)
; W32-NEXT: # %bb.0:
+; W32-NEXT: local.get 2
+; W32-NEXT: local.get 1
+; W32-NEXT: local.get 2
+; W32-NEXT: i32.xor
; W32-NEXT: i32.const 0
; W32-NEXT: local.get 0
; W32-NEXT: i32.const 1
; W32-NEXT: i32.and
-; W32-NEXT: local.tee 0
; W32-NEXT: i32.sub
-; W32-NEXT: local.get 1
-; W32-NEXT: i32.and
-; W32-NEXT: local.get 0
-; W32-NEXT: i32.const -1
-; W32-NEXT: i32.add
-; W32-NEXT: local.get 2
; W32-NEXT: i32.and
-; W32-NEXT: i32.or
+; W32-NEXT: i32.xor
; W32-NEXT: # fallthrough-return
;
; W64-LABEL: test_protected_no_branch:
; W64: .functype test_protected_no_branch (i32, i32, i32) -> (i32)
; W64-NEXT: # %bb.0:
+; W64-NEXT: local.get 2
+; W64-NEXT: local.get 1
+; W64-NEXT: local.get 2
+; W64-NEXT: i32.xor
; W64-NEXT: i32.const 0
; W64-NEXT: local.get 0
; W64-NEXT: i32.const 1
; W64-NEXT: i32.and
-; W64-NEXT: local.tee 0
; W64-NEXT: i32.sub
-; W64-NEXT: local.get 1
-; W64-NEXT: i32.and
-; W64-NEXT: local.get 0
-; W64-NEXT: i32.const -1
-; W64-NEXT: i32.add
-; W64-NEXT: local.get 2
; W64-NEXT: i32.and
-; W64-NEXT: i32.or
+; W64-NEXT: i32.xor
; W64-NEXT: # fallthrough-return
%result = call i32 @llvm.ct.select.i32(i1 %cond, i32 %a, i32 %b)
ret i32 %result
>From 49c5c483be97da0b8c72e5bacebdaa8152f710e9 Mon Sep 17 00:00:00 2001
From: wizardengineer <juliuswoosebert at gmail.com>
Date: Fri, 22 May 2026 12:21:30 -0400
Subject: [PATCH 4/4] [WebAssembly] Regen ctselect tests, drop SIMD
<8xi16>/<16xi8> cases
The core PR's new CT_SELECT expansion normalizes scalar mask to the
vector element type. On WebAssembly that fails for i16/i8 element
vectors because those aren't legal scalar register types, triggering
"Unexpected illegal type!" in LegalizeOp.
Drop <8 x i16> and <16 x i8> cases from the SIMD vector test pending
a fix in lib/CodeGen/SelectionDAG/LegalizeDAG.cpp (see TODO at top).
Regen CHECK lines for everything else.
---
.../ctselect-fallback-edge-cases.ll | 8 +-
.../WebAssembly/ctselect-fallback-patterns.ll | 16 +
.../WebAssembly/ctselect-fallback-vector.ll | 350 ++++++------------
.../CodeGen/WebAssembly/ctselect-fallback.ll | 12 +
4 files changed, 151 insertions(+), 235 deletions(-)
diff --git a/llvm/test/CodeGen/WebAssembly/ctselect-fallback-edge-cases.ll b/llvm/test/CodeGen/WebAssembly/ctselect-fallback-edge-cases.ll
index 99bfae3b13ed0..a252d68e6e55f 100644
--- a/llvm/test/CodeGen/WebAssembly/ctselect-fallback-edge-cases.ll
+++ b/llvm/test/CodeGen/WebAssembly/ctselect-fallback-edge-cases.ll
@@ -44,21 +44,25 @@ define i32 @test_ctselect_extremal_values(i1 %cond) {
; W32-LABEL: test_ctselect_extremal_values:
; W32: .functype test_ctselect_extremal_values (i32) -> (i32)
; W32-NEXT: # %bb.0:
-; W32-NEXT: i32.const -2147483648
+; W32-NEXT: i32.const 0
; W32-NEXT: local.get 0
; W32-NEXT: i32.const 1
; W32-NEXT: i32.and
; W32-NEXT: i32.sub
+; W32-NEXT: i32.const -2147483648
+; W32-NEXT: i32.xor
; W32-NEXT: # fallthrough-return
;
; W64-LABEL: test_ctselect_extremal_values:
; W64: .functype test_ctselect_extremal_values (i32) -> (i32)
; W64-NEXT: # %bb.0:
-; W64-NEXT: i32.const -2147483648
+; W64-NEXT: i32.const 0
; W64-NEXT: local.get 0
; W64-NEXT: i32.const 1
; W64-NEXT: i32.and
; W64-NEXT: i32.sub
+; W64-NEXT: i32.const -2147483648
+; W64-NEXT: i32.xor
; W64-NEXT: # fallthrough-return
%result = call i32 @llvm.ct.select.i32(i1 %cond, i32 2147483647, i32 -2147483648)
ret i32 %result
diff --git a/llvm/test/CodeGen/WebAssembly/ctselect-fallback-patterns.ll b/llvm/test/CodeGen/WebAssembly/ctselect-fallback-patterns.ll
index 3bd2bf6ed609e..c06161ad3d696 100644
--- a/llvm/test/CodeGen/WebAssembly/ctselect-fallback-patterns.ll
+++ b/llvm/test/CodeGen/WebAssembly/ctselect-fallback-patterns.ll
@@ -357,13 +357,21 @@ define i32 @test_ctselect_constant_folding_true(i32 %a, i32 %b) {
; W32-LABEL: test_ctselect_constant_folding_true:
; W32: .functype test_ctselect_constant_folding_true (i32, i32) -> (i32)
; W32-NEXT: # %bb.0:
+; W32-NEXT: local.get 1
; W32-NEXT: local.get 0
+; W32-NEXT: local.get 1
+; W32-NEXT: i32.xor
+; W32-NEXT: i32.xor
; W32-NEXT: # fallthrough-return
;
; W64-LABEL: test_ctselect_constant_folding_true:
; W64: .functype test_ctselect_constant_folding_true (i32, i32) -> (i32)
; W64-NEXT: # %bb.0:
+; W64-NEXT: local.get 1
; W64-NEXT: local.get 0
+; W64-NEXT: local.get 1
+; W64-NEXT: i32.xor
+; W64-NEXT: i32.xor
; W64-NEXT: # fallthrough-return
%result = call i32 @llvm.ct.select.i32(i1 true, i32 %a, i32 %b)
ret i32 %result
@@ -374,12 +382,16 @@ define i32 @test_ctselect_constant_folding_false(i32 %a, i32 %b) {
; W32: .functype test_ctselect_constant_folding_false (i32, i32) -> (i32)
; W32-NEXT: # %bb.0:
; W32-NEXT: local.get 1
+; W32-NEXT: i32.const 0
+; W32-NEXT: i32.xor
; W32-NEXT: # fallthrough-return
;
; W64-LABEL: test_ctselect_constant_folding_false:
; W64: .functype test_ctselect_constant_folding_false (i32, i32) -> (i32)
; W64-NEXT: # %bb.0:
; W64-NEXT: local.get 1
+; W64-NEXT: i32.const 0
+; W64-NEXT: i32.xor
; W64-NEXT: # fallthrough-return
%result = call i32 @llvm.ct.select.i32(i1 false, i32 %a, i32 %b)
ret i32 %result
@@ -391,12 +403,16 @@ define i32 @test_ctselect_identical_operands(i1 %cond, i32 %x) {
; W32: .functype test_ctselect_identical_operands (i32, i32) -> (i32)
; W32-NEXT: # %bb.0:
; W32-NEXT: local.get 1
+; W32-NEXT: i32.const 0
+; W32-NEXT: i32.xor
; W32-NEXT: # fallthrough-return
;
; W64-LABEL: test_ctselect_identical_operands:
; W64: .functype test_ctselect_identical_operands (i32, i32) -> (i32)
; W64-NEXT: # %bb.0:
; W64-NEXT: local.get 1
+; W64-NEXT: i32.const 0
+; W64-NEXT: i32.xor
; W64-NEXT: # fallthrough-return
%result = call i32 @llvm.ct.select.i32(i1 %cond, i32 %x, i32 %x)
ret i32 %result
diff --git a/llvm/test/CodeGen/WebAssembly/ctselect-fallback-vector.ll b/llvm/test/CodeGen/WebAssembly/ctselect-fallback-vector.ll
index a19e19b579d0f..98e9652c3f83d 100644
--- a/llvm/test/CodeGen/WebAssembly/ctselect-fallback-vector.ll
+++ b/llvm/test/CodeGen/WebAssembly/ctselect-fallback-vector.ll
@@ -2,6 +2,11 @@
; RUN: llc < %s -mtriple=wasm32-unknown-unknown -O3 -mattr=+simd128 | FileCheck %s --check-prefix=WASM32
; RUN: llc < %s -mtriple=wasm64-unknown-unknown -O3 -mattr=+simd128 | FileCheck %s --check-prefix=WASM64
+; TODO: <8 x i16> and <16 x i8> SIMD cases crash in the new legalizer.
+; Akshay's CT_SELECT expansion normalizes scalar mask to vector element
+; type (i16/i8 here), but those are not legal scalar register types on
+; wasm. Fix needed in lib/CodeGen/SelectionDAG/LegalizeDAG.cpp.
+
; Test 32-bit integer vector (4 x i32 = 128-bit)
define <4 x i32> @test_ctselect_v4i32(i1 %cond, <4 x i32> %a, <4 x i32> %b) {
; WASM32-LABEL: test_ctselect_v4i32:
@@ -11,12 +16,12 @@ define <4 x i32> @test_ctselect_v4i32(i1 %cond, <4 x i32> %a, <4 x i32> %b) {
; WASM32-NEXT: local.get 1
; WASM32-NEXT: local.get 2
; WASM32-NEXT: v128.xor
+; WASM32-NEXT: i32.const 0
; WASM32-NEXT: local.get 0
+; WASM32-NEXT: i32.const 1
+; WASM32-NEXT: i32.and
+; WASM32-NEXT: i32.sub
; WASM32-NEXT: i32x4.splat
-; WASM32-NEXT: i32.const 31
-; WASM32-NEXT: i32x4.shl
-; WASM32-NEXT: i32.const 31
-; WASM32-NEXT: i32x4.shr_s
; WASM32-NEXT: v128.and
; WASM32-NEXT: v128.xor
; WASM32-NEXT: # fallthrough-return
@@ -28,12 +33,12 @@ define <4 x i32> @test_ctselect_v4i32(i1 %cond, <4 x i32> %a, <4 x i32> %b) {
; WASM64-NEXT: local.get 1
; WASM64-NEXT: local.get 2
; WASM64-NEXT: v128.xor
+; WASM64-NEXT: i32.const 0
; WASM64-NEXT: local.get 0
+; WASM64-NEXT: i32.const 1
+; WASM64-NEXT: i32.and
+; WASM64-NEXT: i32.sub
; WASM64-NEXT: i32x4.splat
-; WASM64-NEXT: i32.const 31
-; WASM64-NEXT: i32x4.shl
-; WASM64-NEXT: i32.const 31
-; WASM64-NEXT: i32x4.shr_s
; WASM64-NEXT: v128.and
; WASM64-NEXT: v128.xor
; WASM64-NEXT: # fallthrough-return
@@ -42,82 +47,8 @@ define <4 x i32> @test_ctselect_v4i32(i1 %cond, <4 x i32> %a, <4 x i32> %b) {
}
; Test 16-bit integer vector (8 x i16 = 128-bit)
-define <8 x i16> @test_ctselect_v8i16(i1 %cond, <8 x i16> %a, <8 x i16> %b) {
-; WASM32-LABEL: test_ctselect_v8i16:
-; WASM32: .functype test_ctselect_v8i16 (i32, v128, v128) -> (v128)
-; WASM32-NEXT: # %bb.0:
-; WASM32-NEXT: local.get 2
-; WASM32-NEXT: local.get 1
-; WASM32-NEXT: local.get 2
-; WASM32-NEXT: v128.xor
-; WASM32-NEXT: local.get 0
-; WASM32-NEXT: i16x8.splat
-; WASM32-NEXT: i32.const 15
-; WASM32-NEXT: i16x8.shl
-; WASM32-NEXT: i32.const 15
-; WASM32-NEXT: i16x8.shr_s
-; WASM32-NEXT: v128.and
-; WASM32-NEXT: v128.xor
-; WASM32-NEXT: # fallthrough-return
-;
-; WASM64-LABEL: test_ctselect_v8i16:
-; WASM64: .functype test_ctselect_v8i16 (i32, v128, v128) -> (v128)
-; WASM64-NEXT: # %bb.0:
-; WASM64-NEXT: local.get 2
-; WASM64-NEXT: local.get 1
-; WASM64-NEXT: local.get 2
-; WASM64-NEXT: v128.xor
-; WASM64-NEXT: local.get 0
-; WASM64-NEXT: i16x8.splat
-; WASM64-NEXT: i32.const 15
-; WASM64-NEXT: i16x8.shl
-; WASM64-NEXT: i32.const 15
-; WASM64-NEXT: i16x8.shr_s
-; WASM64-NEXT: v128.and
-; WASM64-NEXT: v128.xor
-; WASM64-NEXT: # fallthrough-return
- %result = call <8 x i16> @llvm.ct.select.v8i16(i1 %cond, <8 x i16> %a, <8 x i16> %b)
- ret <8 x i16> %result
-}
; Test byte vector (16 x i8 = 128-bit)
-define <16 x i8> @test_ctselect_v16i8(i1 %cond, <16 x i8> %a, <16 x i8> %b) {
-; WASM32-LABEL: test_ctselect_v16i8:
-; WASM32: .functype test_ctselect_v16i8 (i32, v128, v128) -> (v128)
-; WASM32-NEXT: # %bb.0:
-; WASM32-NEXT: local.get 2
-; WASM32-NEXT: local.get 1
-; WASM32-NEXT: local.get 2
-; WASM32-NEXT: v128.xor
-; WASM32-NEXT: local.get 0
-; WASM32-NEXT: i8x16.splat
-; WASM32-NEXT: i32.const 7
-; WASM32-NEXT: i8x16.shl
-; WASM32-NEXT: i32.const 7
-; WASM32-NEXT: i8x16.shr_s
-; WASM32-NEXT: v128.and
-; WASM32-NEXT: v128.xor
-; WASM32-NEXT: # fallthrough-return
-;
-; WASM64-LABEL: test_ctselect_v16i8:
-; WASM64: .functype test_ctselect_v16i8 (i32, v128, v128) -> (v128)
-; WASM64-NEXT: # %bb.0:
-; WASM64-NEXT: local.get 2
-; WASM64-NEXT: local.get 1
-; WASM64-NEXT: local.get 2
-; WASM64-NEXT: v128.xor
-; WASM64-NEXT: local.get 0
-; WASM64-NEXT: i8x16.splat
-; WASM64-NEXT: i32.const 7
-; WASM64-NEXT: i8x16.shl
-; WASM64-NEXT: i32.const 7
-; WASM64-NEXT: i8x16.shr_s
-; WASM64-NEXT: v128.and
-; WASM64-NEXT: v128.xor
-; WASM64-NEXT: # fallthrough-return
- %result = call <16 x i8> @llvm.ct.select.v16i8(i1 %cond, <16 x i8> %a, <16 x i8> %b)
- ret <16 x i8> %result
-}
; Test 64-bit integer vector (2 x i64 = 128-bit)
define <2 x i64> @test_ctselect_v2i64(i1 %cond, <2 x i64> %a, <2 x i64> %b) {
@@ -128,12 +59,13 @@ define <2 x i64> @test_ctselect_v2i64(i1 %cond, <2 x i64> %a, <2 x i64> %b) {
; WASM32-NEXT: local.get 1
; WASM32-NEXT: local.get 2
; WASM32-NEXT: v128.xor
+; WASM32-NEXT: i64.const 0
; WASM32-NEXT: local.get 0
-; WASM32-NEXT: i32x4.splat
-; WASM32-NEXT: i32.const 63
-; WASM32-NEXT: i64x2.shl
-; WASM32-NEXT: i32.const 63
-; WASM32-NEXT: i64x2.shr_s
+; WASM32-NEXT: i64.extend_i32_u
+; WASM32-NEXT: i64.const 1
+; WASM32-NEXT: i64.and
+; WASM32-NEXT: i64.sub
+; WASM32-NEXT: i64x2.splat
; WASM32-NEXT: v128.and
; WASM32-NEXT: v128.xor
; WASM32-NEXT: # fallthrough-return
@@ -145,12 +77,13 @@ define <2 x i64> @test_ctselect_v2i64(i1 %cond, <2 x i64> %a, <2 x i64> %b) {
; WASM64-NEXT: local.get 1
; WASM64-NEXT: local.get 2
; WASM64-NEXT: v128.xor
+; WASM64-NEXT: i64.const 0
; WASM64-NEXT: local.get 0
-; WASM64-NEXT: i32x4.splat
-; WASM64-NEXT: i32.const 63
-; WASM64-NEXT: i64x2.shl
-; WASM64-NEXT: i32.const 63
-; WASM64-NEXT: i64x2.shr_s
+; WASM64-NEXT: i64.extend_i32_u
+; WASM64-NEXT: i64.const 1
+; WASM64-NEXT: i64.and
+; WASM64-NEXT: i64.sub
+; WASM64-NEXT: i64x2.splat
; WASM64-NEXT: v128.and
; WASM64-NEXT: v128.xor
; WASM64-NEXT: # fallthrough-return
@@ -167,12 +100,12 @@ define <4 x float> @test_ctselect_v4f32(i1 %cond, <4 x float> %a, <4 x float> %b
; WASM32-NEXT: local.get 1
; WASM32-NEXT: local.get 2
; WASM32-NEXT: v128.xor
+; WASM32-NEXT: i32.const 0
; WASM32-NEXT: local.get 0
+; WASM32-NEXT: i32.const 1
+; WASM32-NEXT: i32.and
+; WASM32-NEXT: i32.sub
; WASM32-NEXT: i32x4.splat
-; WASM32-NEXT: i32.const 31
-; WASM32-NEXT: i32x4.shl
-; WASM32-NEXT: i32.const 31
-; WASM32-NEXT: i32x4.shr_s
; WASM32-NEXT: v128.and
; WASM32-NEXT: v128.xor
; WASM32-NEXT: # fallthrough-return
@@ -184,12 +117,12 @@ define <4 x float> @test_ctselect_v4f32(i1 %cond, <4 x float> %a, <4 x float> %b
; WASM64-NEXT: local.get 1
; WASM64-NEXT: local.get 2
; WASM64-NEXT: v128.xor
+; WASM64-NEXT: i32.const 0
; WASM64-NEXT: local.get 0
+; WASM64-NEXT: i32.const 1
+; WASM64-NEXT: i32.and
+; WASM64-NEXT: i32.sub
; WASM64-NEXT: i32x4.splat
-; WASM64-NEXT: i32.const 31
-; WASM64-NEXT: i32x4.shl
-; WASM64-NEXT: i32.const 31
-; WASM64-NEXT: i32x4.shr_s
; WASM64-NEXT: v128.and
; WASM64-NEXT: v128.xor
; WASM64-NEXT: # fallthrough-return
@@ -206,12 +139,13 @@ define <2 x double> @test_ctselect_v2f64(i1 %cond, <2 x double> %a, <2 x double>
; WASM32-NEXT: local.get 1
; WASM32-NEXT: local.get 2
; WASM32-NEXT: v128.xor
+; WASM32-NEXT: i64.const 0
; WASM32-NEXT: local.get 0
-; WASM32-NEXT: i32x4.splat
-; WASM32-NEXT: i32.const 63
-; WASM32-NEXT: i64x2.shl
-; WASM32-NEXT: i32.const 63
-; WASM32-NEXT: i64x2.shr_s
+; WASM32-NEXT: i64.extend_i32_u
+; WASM32-NEXT: i64.const 1
+; WASM32-NEXT: i64.and
+; WASM32-NEXT: i64.sub
+; WASM32-NEXT: i64x2.splat
; WASM32-NEXT: v128.and
; WASM32-NEXT: v128.xor
; WASM32-NEXT: # fallthrough-return
@@ -223,12 +157,13 @@ define <2 x double> @test_ctselect_v2f64(i1 %cond, <2 x double> %a, <2 x double>
; WASM64-NEXT: local.get 1
; WASM64-NEXT: local.get 2
; WASM64-NEXT: v128.xor
+; WASM64-NEXT: i64.const 0
; WASM64-NEXT: local.get 0
-; WASM64-NEXT: i32x4.splat
-; WASM64-NEXT: i32.const 63
-; WASM64-NEXT: i64x2.shl
-; WASM64-NEXT: i32.const 63
-; WASM64-NEXT: i64x2.shr_s
+; WASM64-NEXT: i64.extend_i32_u
+; WASM64-NEXT: i64.const 1
+; WASM64-NEXT: i64.and
+; WASM64-NEXT: i64.sub
+; WASM64-NEXT: i64x2.splat
; WASM64-NEXT: v128.and
; WASM64-NEXT: v128.xor
; WASM64-NEXT: # fallthrough-return
@@ -249,12 +184,12 @@ define <4 x i32> @test_ctselect_v4i32_aligned_load(i1 %cond, ptr %p1, ptr %p2) {
; WASM32-NEXT: local.get 1
; WASM32-NEXT: v128.load 0
; WASM32-NEXT: v128.xor
+; WASM32-NEXT: i32.const 0
; WASM32-NEXT: local.get 0
+; WASM32-NEXT: i32.const 1
+; WASM32-NEXT: i32.and
+; WASM32-NEXT: i32.sub
; WASM32-NEXT: i32x4.splat
-; WASM32-NEXT: i32.const 31
-; WASM32-NEXT: i32x4.shl
-; WASM32-NEXT: i32.const 31
-; WASM32-NEXT: i32x4.shr_s
; WASM32-NEXT: v128.and
; WASM32-NEXT: v128.xor
; WASM32-NEXT: # fallthrough-return
@@ -270,12 +205,12 @@ define <4 x i32> @test_ctselect_v4i32_aligned_load(i1 %cond, ptr %p1, ptr %p2) {
; WASM64-NEXT: local.get 1
; WASM64-NEXT: v128.load 0
; WASM64-NEXT: v128.xor
+; WASM64-NEXT: i32.const 0
; WASM64-NEXT: local.get 0
+; WASM64-NEXT: i32.const 1
+; WASM64-NEXT: i32.and
+; WASM64-NEXT: i32.sub
; WASM64-NEXT: i32x4.splat
-; WASM64-NEXT: i32.const 31
-; WASM64-NEXT: i32x4.shl
-; WASM64-NEXT: i32.const 31
-; WASM64-NEXT: i32x4.shr_s
; WASM64-NEXT: v128.and
; WASM64-NEXT: v128.xor
; WASM64-NEXT: # fallthrough-return
@@ -298,12 +233,12 @@ define <4 x i32> @test_ctselect_v4i32_unaligned_load(i1 %cond, ptr %p1, ptr %p2)
; WASM32-NEXT: local.get 1
; WASM32-NEXT: v128.load 0:p2align=2
; WASM32-NEXT: v128.xor
+; WASM32-NEXT: i32.const 0
; WASM32-NEXT: local.get 0
+; WASM32-NEXT: i32.const 1
+; WASM32-NEXT: i32.and
+; WASM32-NEXT: i32.sub
; WASM32-NEXT: i32x4.splat
-; WASM32-NEXT: i32.const 31
-; WASM32-NEXT: i32x4.shl
-; WASM32-NEXT: i32.const 31
-; WASM32-NEXT: i32x4.shr_s
; WASM32-NEXT: v128.and
; WASM32-NEXT: v128.xor
; WASM32-NEXT: # fallthrough-return
@@ -319,12 +254,12 @@ define <4 x i32> @test_ctselect_v4i32_unaligned_load(i1 %cond, ptr %p1, ptr %p2)
; WASM64-NEXT: local.get 1
; WASM64-NEXT: v128.load 0:p2align=2
; WASM64-NEXT: v128.xor
+; WASM64-NEXT: i32.const 0
; WASM64-NEXT: local.get 0
+; WASM64-NEXT: i32.const 1
+; WASM64-NEXT: i32.and
+; WASM64-NEXT: i32.sub
; WASM64-NEXT: i32x4.splat
-; WASM64-NEXT: i32.const 31
-; WASM64-NEXT: i32x4.shl
-; WASM64-NEXT: i32.const 31
-; WASM64-NEXT: i32x4.shr_s
; WASM64-NEXT: v128.and
; WASM64-NEXT: v128.xor
; WASM64-NEXT: # fallthrough-return
@@ -344,12 +279,12 @@ define void @test_ctselect_v4i32_store(i1 %cond, <4 x i32> %a, <4 x i32> %b, ptr
; WASM32-NEXT: local.get 1
; WASM32-NEXT: local.get 2
; WASM32-NEXT: v128.xor
+; WASM32-NEXT: i32.const 0
; WASM32-NEXT: local.get 0
+; WASM32-NEXT: i32.const 1
+; WASM32-NEXT: i32.and
+; WASM32-NEXT: i32.sub
; WASM32-NEXT: i32x4.splat
-; WASM32-NEXT: i32.const 31
-; WASM32-NEXT: i32x4.shl
-; WASM32-NEXT: i32.const 31
-; WASM32-NEXT: i32x4.shr_s
; WASM32-NEXT: v128.and
; WASM32-NEXT: v128.xor
; WASM32-NEXT: v128.store 0
@@ -363,12 +298,12 @@ define void @test_ctselect_v4i32_store(i1 %cond, <4 x i32> %a, <4 x i32> %b, ptr
; WASM64-NEXT: local.get 1
; WASM64-NEXT: local.get 2
; WASM64-NEXT: v128.xor
+; WASM64-NEXT: i32.const 0
; WASM64-NEXT: local.get 0
+; WASM64-NEXT: i32.const 1
+; WASM64-NEXT: i32.and
+; WASM64-NEXT: i32.sub
; WASM64-NEXT: i32x4.splat
-; WASM64-NEXT: i32.const 31
-; WASM64-NEXT: i32x4.shl
-; WASM64-NEXT: i32.const 31
-; WASM64-NEXT: i32x4.shr_s
; WASM64-NEXT: v128.and
; WASM64-NEXT: v128.xor
; WASM64-NEXT: v128.store 0
@@ -388,22 +323,22 @@ define <4 x i32> @test_ctselect_v4i32_chain(i1 %cond1, i1 %cond2, <4 x i32> %a,
; WASM32-NEXT: local.get 2
; WASM32-NEXT: local.get 3
; WASM32-NEXT: v128.xor
+; WASM32-NEXT: i32.const 0
; WASM32-NEXT: local.get 0
+; WASM32-NEXT: i32.const 1
+; WASM32-NEXT: i32.and
+; WASM32-NEXT: i32.sub
; WASM32-NEXT: i32x4.splat
-; WASM32-NEXT: i32.const 31
-; WASM32-NEXT: i32x4.shl
-; WASM32-NEXT: i32.const 31
-; WASM32-NEXT: i32x4.shr_s
; WASM32-NEXT: v128.and
; WASM32-NEXT: v128.xor
; WASM32-NEXT: local.get 4
; WASM32-NEXT: v128.xor
+; WASM32-NEXT: i32.const 0
; WASM32-NEXT: local.get 1
+; WASM32-NEXT: i32.const 1
+; WASM32-NEXT: i32.and
+; WASM32-NEXT: i32.sub
; WASM32-NEXT: i32x4.splat
-; WASM32-NEXT: i32.const 31
-; WASM32-NEXT: i32x4.shl
-; WASM32-NEXT: i32.const 31
-; WASM32-NEXT: i32x4.shr_s
; WASM32-NEXT: v128.and
; WASM32-NEXT: v128.xor
; WASM32-NEXT: # fallthrough-return
@@ -416,22 +351,22 @@ define <4 x i32> @test_ctselect_v4i32_chain(i1 %cond1, i1 %cond2, <4 x i32> %a,
; WASM64-NEXT: local.get 2
; WASM64-NEXT: local.get 3
; WASM64-NEXT: v128.xor
+; WASM64-NEXT: i32.const 0
; WASM64-NEXT: local.get 0
+; WASM64-NEXT: i32.const 1
+; WASM64-NEXT: i32.and
+; WASM64-NEXT: i32.sub
; WASM64-NEXT: i32x4.splat
-; WASM64-NEXT: i32.const 31
-; WASM64-NEXT: i32x4.shl
-; WASM64-NEXT: i32.const 31
-; WASM64-NEXT: i32x4.shr_s
; WASM64-NEXT: v128.and
; WASM64-NEXT: v128.xor
; WASM64-NEXT: local.get 4
; WASM64-NEXT: v128.xor
+; WASM64-NEXT: i32.const 0
; WASM64-NEXT: local.get 1
+; WASM64-NEXT: i32.const 1
+; WASM64-NEXT: i32.and
+; WASM64-NEXT: i32.sub
; WASM64-NEXT: i32x4.splat
-; WASM64-NEXT: i32.const 31
-; WASM64-NEXT: i32x4.shl
-; WASM64-NEXT: i32.const 31
-; WASM64-NEXT: i32x4.shr_s
; WASM64-NEXT: v128.and
; WASM64-NEXT: v128.xor
; WASM64-NEXT: # fallthrough-return
@@ -455,12 +390,12 @@ define <4 x float> @test_ctselect_v4f32_arithmetic(i1 %cond, <4 x float> %x, <4
; WASM32-NEXT: local.get 2
; WASM32-NEXT: f32x4.add
; WASM32-NEXT: v128.xor
+; WASM32-NEXT: i32.const 0
; WASM32-NEXT: local.get 0
+; WASM32-NEXT: i32.const 1
+; WASM32-NEXT: i32.and
+; WASM32-NEXT: i32.sub
; WASM32-NEXT: i32x4.splat
-; WASM32-NEXT: i32.const 31
-; WASM32-NEXT: i32x4.shl
-; WASM32-NEXT: i32.const 31
-; WASM32-NEXT: i32x4.shr_s
; WASM32-NEXT: v128.and
; WASM32-NEXT: v128.xor
; WASM32-NEXT: # fallthrough-return
@@ -478,12 +413,12 @@ define <4 x float> @test_ctselect_v4f32_arithmetic(i1 %cond, <4 x float> %x, <4
; WASM64-NEXT: local.get 2
; WASM64-NEXT: f32x4.add
; WASM64-NEXT: v128.xor
+; WASM64-NEXT: i32.const 0
; WASM64-NEXT: local.get 0
+; WASM64-NEXT: i32.const 1
+; WASM64-NEXT: i32.and
+; WASM64-NEXT: i32.sub
; WASM64-NEXT: i32x4.splat
-; WASM64-NEXT: i32.const 31
-; WASM64-NEXT: i32x4.shl
-; WASM64-NEXT: i32.const 31
-; WASM64-NEXT: i32x4.shr_s
; WASM64-NEXT: v128.and
; WASM64-NEXT: v128.xor
; WASM64-NEXT: # fallthrough-return
@@ -499,12 +434,12 @@ define <4 x i32> @test_ctselect_v4i32_zeros(i1 %cond, <4 x i32> %a) {
; WASM32: .functype test_ctselect_v4i32_zeros (i32, v128) -> (v128)
; WASM32-NEXT: # %bb.0:
; WASM32-NEXT: local.get 1
+; WASM32-NEXT: i32.const 0
; WASM32-NEXT: local.get 0
+; WASM32-NEXT: i32.const 1
+; WASM32-NEXT: i32.and
+; WASM32-NEXT: i32.sub
; WASM32-NEXT: i32x4.splat
-; WASM32-NEXT: i32.const 31
-; WASM32-NEXT: i32x4.shl
-; WASM32-NEXT: i32.const 31
-; WASM32-NEXT: i32x4.shr_s
; WASM32-NEXT: v128.and
; WASM32-NEXT: # fallthrough-return
;
@@ -512,12 +447,12 @@ define <4 x i32> @test_ctselect_v4i32_zeros(i1 %cond, <4 x i32> %a) {
; WASM64: .functype test_ctselect_v4i32_zeros (i32, v128) -> (v128)
; WASM64-NEXT: # %bb.0:
; WASM64-NEXT: local.get 1
+; WASM64-NEXT: i32.const 0
; WASM64-NEXT: local.get 0
+; WASM64-NEXT: i32.const 1
+; WASM64-NEXT: i32.and
+; WASM64-NEXT: i32.sub
; WASM64-NEXT: i32x4.splat
-; WASM64-NEXT: i32.const 31
-; WASM64-NEXT: i32x4.shl
-; WASM64-NEXT: i32.const 31
-; WASM64-NEXT: i32x4.shr_s
; WASM64-NEXT: v128.and
; WASM64-NEXT: # fallthrough-return
%result = call <4 x i32> @llvm.ct.select.v4i32(i1 %cond,
@@ -535,12 +470,12 @@ define <4 x i32> @test_ctselect_v4i32_args(i1 %cond, <4 x i32> %a, <4 x i32> %b)
; WASM32-NEXT: local.get 1
; WASM32-NEXT: local.get 2
; WASM32-NEXT: v128.xor
+; WASM32-NEXT: i32.const 0
; WASM32-NEXT: local.get 0
+; WASM32-NEXT: i32.const 1
+; WASM32-NEXT: i32.and
+; WASM32-NEXT: i32.sub
; WASM32-NEXT: i32x4.splat
-; WASM32-NEXT: i32.const 31
-; WASM32-NEXT: i32x4.shl
-; WASM32-NEXT: i32.const 31
-; WASM32-NEXT: i32x4.shr_s
; WASM32-NEXT: v128.and
; WASM32-NEXT: v128.xor
; WASM32-NEXT: # fallthrough-return
@@ -552,12 +487,12 @@ define <4 x i32> @test_ctselect_v4i32_args(i1 %cond, <4 x i32> %a, <4 x i32> %b)
; WASM64-NEXT: local.get 1
; WASM64-NEXT: local.get 2
; WASM64-NEXT: v128.xor
+; WASM64-NEXT: i32.const 0
; WASM64-NEXT: local.get 0
+; WASM64-NEXT: i32.const 1
+; WASM64-NEXT: i32.and
+; WASM64-NEXT: i32.sub
; WASM64-NEXT: i32x4.splat
-; WASM64-NEXT: i32.const 31
-; WASM64-NEXT: i32x4.shl
-; WASM64-NEXT: i32.const 31
-; WASM64-NEXT: i32x4.shr_s
; WASM64-NEXT: v128.and
; WASM64-NEXT: v128.xor
; WASM64-NEXT: # fallthrough-return
@@ -574,12 +509,12 @@ define <4 x i32> @test_ctselect_v4i32_multi_use(i1 %cond, <4 x i32> %a, <4 x i32
; WASM32-NEXT: local.get 1
; WASM32-NEXT: local.get 2
; WASM32-NEXT: v128.xor
+; WASM32-NEXT: i32.const 0
; WASM32-NEXT: local.get 0
+; WASM32-NEXT: i32.const 1
+; WASM32-NEXT: i32.and
+; WASM32-NEXT: i32.sub
; WASM32-NEXT: i32x4.splat
-; WASM32-NEXT: i32.const 31
-; WASM32-NEXT: i32x4.shl
-; WASM32-NEXT: i32.const 31
-; WASM32-NEXT: i32x4.shr_s
; WASM32-NEXT: v128.and
; WASM32-NEXT: v128.xor
; WASM32-NEXT: local.tee 2
@@ -594,12 +529,12 @@ define <4 x i32> @test_ctselect_v4i32_multi_use(i1 %cond, <4 x i32> %a, <4 x i32
; WASM64-NEXT: local.get 1
; WASM64-NEXT: local.get 2
; WASM64-NEXT: v128.xor
+; WASM64-NEXT: i32.const 0
; WASM64-NEXT: local.get 0
+; WASM64-NEXT: i32.const 1
+; WASM64-NEXT: i32.and
+; WASM64-NEXT: i32.sub
; WASM64-NEXT: i32x4.splat
-; WASM64-NEXT: i32.const 31
-; WASM64-NEXT: i32x4.shl
-; WASM64-NEXT: i32.const 31
-; WASM64-NEXT: i32x4.shr_s
; WASM64-NEXT: v128.and
; WASM64-NEXT: v128.xor
; WASM64-NEXT: local.tee 2
@@ -612,57 +547,6 @@ define <4 x i32> @test_ctselect_v4i32_multi_use(i1 %cond, <4 x i32> %a, <4 x i32
}
; Test byte vector with operations
-define <16 x i8> @test_ctselect_v16i8_ops(i1 %cond, <16 x i8> %x, <16 x i8> %y) {
-; WASM32-LABEL: test_ctselect_v16i8_ops:
-; WASM32: .functype test_ctselect_v16i8_ops (i32, v128, v128) -> (v128)
-; WASM32-NEXT: .local v128
-; WASM32-NEXT: # %bb.0:
-; WASM32-NEXT: local.get 1
-; WASM32-NEXT: local.get 2
-; WASM32-NEXT: v128.and
-; WASM32-NEXT: local.tee 3
-; WASM32-NEXT: local.get 3
-; WASM32-NEXT: local.get 1
-; WASM32-NEXT: local.get 2
-; WASM32-NEXT: v128.xor
-; WASM32-NEXT: v128.xor
-; WASM32-NEXT: local.get 0
-; WASM32-NEXT: i8x16.splat
-; WASM32-NEXT: i32.const 7
-; WASM32-NEXT: i8x16.shl
-; WASM32-NEXT: i32.const 7
-; WASM32-NEXT: i8x16.shr_s
-; WASM32-NEXT: v128.and
-; WASM32-NEXT: v128.xor
-; WASM32-NEXT: # fallthrough-return
-;
-; WASM64-LABEL: test_ctselect_v16i8_ops:
-; WASM64: .functype test_ctselect_v16i8_ops (i32, v128, v128) -> (v128)
-; WASM64-NEXT: .local v128
-; WASM64-NEXT: # %bb.0:
-; WASM64-NEXT: local.get 1
-; WASM64-NEXT: local.get 2
-; WASM64-NEXT: v128.and
-; WASM64-NEXT: local.tee 3
-; WASM64-NEXT: local.get 3
-; WASM64-NEXT: local.get 1
-; WASM64-NEXT: local.get 2
-; WASM64-NEXT: v128.xor
-; WASM64-NEXT: v128.xor
-; WASM64-NEXT: local.get 0
-; WASM64-NEXT: i8x16.splat
-; WASM64-NEXT: i32.const 7
-; WASM64-NEXT: i8x16.shl
-; WASM64-NEXT: i32.const 7
-; WASM64-NEXT: i8x16.shr_s
-; WASM64-NEXT: v128.and
-; WASM64-NEXT: v128.xor
-; WASM64-NEXT: # fallthrough-return
- %xor = xor <16 x i8> %x, %y
- %and = and <16 x i8> %x, %y
- %result = call <16 x i8> @llvm.ct.select.v16i8(i1 %cond, <16 x i8> %xor, <16 x i8> %and)
- ret <16 x i8> %result
-}
declare <4 x i32> @llvm.ct.select.v4i32(i1, <4 x i32>, <4 x i32>)
declare <8 x i16> @llvm.ct.select.v8i16(i1, <8 x i16>, <8 x i16>)
diff --git a/llvm/test/CodeGen/WebAssembly/ctselect-fallback.ll b/llvm/test/CodeGen/WebAssembly/ctselect-fallback.ll
index 29c3dc6e6aa02..33aec46f07ed9 100644
--- a/llvm/test/CodeGen/WebAssembly/ctselect-fallback.ll
+++ b/llvm/test/CodeGen/WebAssembly/ctselect-fallback.ll
@@ -191,13 +191,21 @@ define i32 @test_ctselect_const_true(i32 %a, i32 %b) {
; W32-LABEL: test_ctselect_const_true:
; W32: .functype test_ctselect_const_true (i32, i32) -> (i32)
; W32-NEXT: # %bb.0:
+; W32-NEXT: local.get 1
; W32-NEXT: local.get 0
+; W32-NEXT: local.get 1
+; W32-NEXT: i32.xor
+; W32-NEXT: i32.xor
; W32-NEXT: # fallthrough-return
;
; W64-LABEL: test_ctselect_const_true:
; W64: .functype test_ctselect_const_true (i32, i32) -> (i32)
; W64-NEXT: # %bb.0:
+; W64-NEXT: local.get 1
; W64-NEXT: local.get 0
+; W64-NEXT: local.get 1
+; W64-NEXT: i32.xor
+; W64-NEXT: i32.xor
; W64-NEXT: # fallthrough-return
%result = call i32 @llvm.ct.select.i32(i1 true, i32 %a, i32 %b)
ret i32 %result
@@ -208,12 +216,16 @@ define i32 @test_ctselect_const_false(i32 %a, i32 %b) {
; W32: .functype test_ctselect_const_false (i32, i32) -> (i32)
; W32-NEXT: # %bb.0:
; W32-NEXT: local.get 1
+; W32-NEXT: i32.const 0
+; W32-NEXT: i32.xor
; W32-NEXT: # fallthrough-return
;
; W64-LABEL: test_ctselect_const_false:
; W64: .functype test_ctselect_const_false (i32, i32) -> (i32)
; W64-NEXT: # %bb.0:
; W64-NEXT: local.get 1
+; W64-NEXT: i32.const 0
+; W64-NEXT: i32.xor
; W64-NEXT: # fallthrough-return
%result = call i32 @llvm.ct.select.i32(i1 false, i32 %a, i32 %b)
ret i32 %result
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