[clang] [HLSL] get inout/out ABI for array parameters working (PR #111047)
Sarah Spall via cfe-commits
cfe-commits at lists.llvm.org
Thu Oct 3 13:39:19 PDT 2024
https://github.com/spall updated https://github.com/llvm/llvm-project/pull/111047
>From c73ce3707e59242b8ccbb6757a290938c2d39e5e Mon Sep 17 00:00:00 2001
From: Sarah Spall <spall at planetbauer.com>
Date: Tue, 17 Sep 2024 20:25:46 +0000
Subject: [PATCH 1/5] theoretically fix issue
---
clang/lib/Sema/SemaType.cpp | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/clang/lib/Sema/SemaType.cpp b/clang/lib/Sema/SemaType.cpp
index c44fc9c4194ca4..8c80ece635fbff 100644
--- a/clang/lib/Sema/SemaType.cpp
+++ b/clang/lib/Sema/SemaType.cpp
@@ -5675,6 +5675,9 @@ static TypeSourceInfo *GetFullTypeForDeclarator(TypeProcessingState &state,
assert(!T.isNull() && "T must not be null at the end of this function");
if (!AreDeclaratorChunksValid)
return Context.getTrivialTypeSourceInfo(T);
+
+ if (state.didParseHLSLParamMod() && !T->isConstantArrayType())
+ T = S.HLSL().getInoutParameterType(T);
return GetTypeSourceInfoForDeclarator(state, T, TInfo);
}
@@ -8562,7 +8565,6 @@ static void HandleHLSLParamModifierAttr(TypeProcessingState &State,
return;
if (Attr.getSemanticSpelling() == HLSLParamModifierAttr::Keyword_inout ||
Attr.getSemanticSpelling() == HLSLParamModifierAttr::Keyword_out) {
- CurType = S.HLSL().getInoutParameterType(CurType);
State.setParsedHLSLParamMod(true);
}
}
>From 0f64ad26f2218a037694b01649a4ebd5e2bf766c Mon Sep 17 00:00:00 2001
From: Sarah Spall <spall at planetbauer.com>
Date: Wed, 2 Oct 2024 21:34:02 +0000
Subject: [PATCH 2/5] get inout working
---
clang/include/clang/AST/ASTContext.h | 4 +++
clang/lib/AST/ASTContext.cpp | 10 +++++++
clang/lib/CodeGen/CGCall.cpp | 3 +-
clang/lib/CodeGen/CGExpr.cpp | 7 +++--
clang/lib/Sema/SemaExprCXX.cpp | 13 +++++++--
clang/lib/Sema/SemaOverload.cpp | 43 ++++++++++++++++------------
6 files changed, 55 insertions(+), 25 deletions(-)
diff --git a/clang/include/clang/AST/ASTContext.h b/clang/include/clang/AST/ASTContext.h
index a4d36f2eacd5d1..bdd4d86c30d389 100644
--- a/clang/include/clang/AST/ASTContext.h
+++ b/clang/include/clang/AST/ASTContext.h
@@ -1471,6 +1471,10 @@ class ASTContext : public RefCountedBase<ASTContext> {
/// type to the decayed type.
QualType getDecayedType(QualType Orig, QualType Decayed) const;
+ /// Return the uniqued reference to a constant array type from the
+ /// original array parameter type.
+ QualType getConstantArrayFromArrayParameterType(QualType Ty) const;
+
/// Return the uniqued reference to a specified array parameter type from the
/// original array type.
QualType getArrayParameterType(QualType Ty) const;
diff --git a/clang/lib/AST/ASTContext.cpp b/clang/lib/AST/ASTContext.cpp
index 735def67f7840f..b49783176f79d8 100644
--- a/clang/lib/AST/ASTContext.cpp
+++ b/clang/lib/AST/ASTContext.cpp
@@ -3830,6 +3830,16 @@ QualType ASTContext::getDecayedType(QualType T) const {
return getDecayedType(T, Decayed);
}
+QualType ASTContext::getConstantArrayFromArrayParameterType(QualType Ty) const {
+ if (Ty->isConstantArrayType() && !Ty->isArrayParameterType())
+ return Ty;
+ assert(Ty->isArrayParameterType() && "Ty must be an array parameter type.");
+ const auto *ATy = cast<ArrayParameterType>(Ty);
+ return getConstantArrayType(ATy->getElementType(), ATy->getSize(),
+ ATy->getSizeExpr(), ATy->getSizeModifier(),
+ ATy->getIndexTypeQualifiers().getAsOpaqueValue());
+}
+
QualType ASTContext::getArrayParameterType(QualType Ty) const {
if (Ty->isArrayParameterType())
return Ty;
diff --git a/clang/lib/CodeGen/CGCall.cpp b/clang/lib/CodeGen/CGCall.cpp
index 4ae981e4013e9c..fe578cacc64de1 100644
--- a/clang/lib/CodeGen/CGCall.cpp
+++ b/clang/lib/CodeGen/CGCall.cpp
@@ -4690,7 +4690,8 @@ void CodeGenFunction::EmitCallArg(CallArgList &args, const Expr *E,
return emitWritebackArg(*this, args, CRE);
}
- assert(type->isReferenceType() == E->isGLValue() &&
+ assert(type->isArrayParameterType() ||
+ (type->isReferenceType() == E->isGLValue()) &&
"reference binding to unmaterialized r-value!");
// Add writeback for HLSLOutParamExpr.
diff --git a/clang/lib/CodeGen/CGExpr.cpp b/clang/lib/CodeGen/CGExpr.cpp
index aaaa4c7cbf2aec..9f7ce71b30b498 100644
--- a/clang/lib/CodeGen/CGExpr.cpp
+++ b/clang/lib/CodeGen/CGExpr.cpp
@@ -5811,9 +5811,12 @@ LValue CodeGenFunction::EmitBinaryOperatorLValue(const BinaryOperator *E) {
// This function implements trivial copy assignment for HLSL's
// assignable constant arrays.
LValue CodeGenFunction::EmitHLSLArrayAssignLValue(const BinaryOperator *E) {
- LValue TrivialAssignmentRHS = EmitLValue(E->getRHS());
+ // Don't emit an LValue for the RHS because it might not be an LValue
LValue LHS = EmitLValue(E->getLHS());
- EmitAggregateAssign(LHS, TrivialAssignmentRHS, E->getLHS()->getType());
+ // In C assignment operator RHS is often an RValue.
+ // EmitAggregateAssign expects an LValue for the RHS so call the below
+ // function instead.
+ EmitInitializationToLValue(E->getRHS(), LHS);
return LHS;
}
diff --git a/clang/lib/Sema/SemaExprCXX.cpp b/clang/lib/Sema/SemaExprCXX.cpp
index b30414a8a8277a..89df42a837d024 100644
--- a/clang/lib/Sema/SemaExprCXX.cpp
+++ b/clang/lib/Sema/SemaExprCXX.cpp
@@ -4424,10 +4424,17 @@ Sema::PerformImplicitConversion(Expr *From, QualType ToType,
break;
case ICK_HLSL_Array_RValue:
- FromType = Context.getArrayParameterType(FromType);
- From = ImpCastExprToType(From, FromType, CK_HLSLArrayRValue, VK_PRValue,
- /*BasePath=*/nullptr, CCK)
+ if (ToType->isArrayParameterType()) {
+ FromType = Context.getArrayParameterType(FromType);
+ From = ImpCastExprToType(From, FromType, CK_HLSLArrayRValue, VK_PRValue,
+ /*BasePath=*/nullptr, CCK)
.get();
+ } else { // FromType must be ArrayParameterType
+ FromType = Context.getConstantArrayFromArrayParameterType(FromType);
+ From = ImpCastExprToType(From, FromType, CK_HLSLArrayRValue, VK_PRValue,
+ /*BasePath=*/nullptr, CCK)
+ .get();
+ }
break;
case ICK_Function_To_Pointer:
diff --git a/clang/lib/Sema/SemaOverload.cpp b/clang/lib/Sema/SemaOverload.cpp
index 2cde8131108fbe..6dd6bdbd336860 100644
--- a/clang/lib/Sema/SemaOverload.cpp
+++ b/clang/lib/Sema/SemaOverload.cpp
@@ -2212,26 +2212,9 @@ static bool IsStandardConversion(Sema &S, Expr* From, QualType ToType,
return false;
}
}
- // Lvalue-to-rvalue conversion (C++11 4.1):
- // A glvalue (3.10) of a non-function, non-array type T can
- // be converted to a prvalue.
- bool argIsLValue = From->isGLValue();
- if (argIsLValue && !FromType->canDecayToPointerType() &&
- S.Context.getCanonicalType(FromType) != S.Context.OverloadTy) {
- SCS.First = ICK_Lvalue_To_Rvalue;
-
- // C11 6.3.2.1p2:
- // ... if the lvalue has atomic type, the value has the non-atomic version
- // of the type of the lvalue ...
- if (const AtomicType *Atomic = FromType->getAs<AtomicType>())
- FromType = Atomic->getValueType();
- // If T is a non-class type, the type of the rvalue is the
- // cv-unqualified version of T. Otherwise, the type of the rvalue
- // is T (C++ 4.1p1). C++ can't get here with class types; in C, we
- // just strip the qualifiers because they don't matter.
- FromType = FromType.getUnqualifiedType();
- } else if (S.getLangOpts().HLSL && FromType->isConstantArrayType() &&
+ bool argIsLValue = From->isGLValue();
+ if (S.getLangOpts().HLSL && FromType->isConstantArrayType() &&
ToType->isConstantArrayType()) {
// HLSL constant array parameters do not decay, so if the argument is a
// constant array and the parameter is an ArrayParameterType we have special
@@ -2239,6 +2222,9 @@ static bool IsStandardConversion(Sema &S, Expr* From, QualType ToType,
if (ToType->isArrayParameterType()) {
FromType = S.Context.getArrayParameterType(FromType);
SCS.First = ICK_HLSL_Array_RValue;
+ } else if (FromType->isArrayParameterType()) {
+ FromType = S.Context.getConstantArrayFromArrayParameterType(FromType);
+ SCS.First = ICK_HLSL_Array_RValue;
} else {
SCS.First = ICK_Identity;
}
@@ -2249,6 +2235,25 @@ static bool IsStandardConversion(Sema &S, Expr* From, QualType ToType,
SCS.setAllToTypes(ToType);
return true;
+ } else if (argIsLValue && !FromType->canDecayToPointerType() &&
+ S.Context.getCanonicalType(FromType) != S.Context.OverloadTy) {
+ // Lvalue-to-rvalue conversion (C++11 4.1):
+ // A glvalue (3.10) of a non-function, non-array type T can
+ // be converted to a prvalue.
+
+ SCS.First = ICK_Lvalue_To_Rvalue;
+
+ // C11 6.3.2.1p2:
+ // ... if the lvalue has atomic type, the value has the non-atomic version
+ // of the type of the lvalue ...
+ if (const AtomicType *Atomic = FromType->getAs<AtomicType>())
+ FromType = Atomic->getValueType();
+
+ // If T is a non-class type, the type of the rvalue is the
+ // cv-unqualified version of T. Otherwise, the type of the rvalue
+ // is T (C++ 4.1p1). C++ can't get here with class types; in C, we
+ // just strip the qualifiers because they don't matter.
+ FromType = FromType.getUnqualifiedType();
} else if (FromType->isArrayType()) {
// Array-to-pointer conversion (C++ 4.2)
SCS.First = ICK_Array_To_Pointer;
>From cf8edceae3b7064e472dc499445e42e3307580ab Mon Sep 17 00:00:00 2001
From: Sarah Spall <spall at planetbauer.com>
Date: Thu, 3 Oct 2024 14:26:00 +0000
Subject: [PATCH 3/5] fix tests cases broken by changes
---
clang/test/CodeGenHLSL/ArrayAssignable.hlsl | 20 +++++++++-----------
clang/test/CodeGenHLSL/ArrayTemporary.hlsl | 10 ++++------
clang/test/SemaHLSL/ArrayTemporary.hlsl | 3 ---
3 files changed, 13 insertions(+), 20 deletions(-)
diff --git a/clang/test/CodeGenHLSL/ArrayAssignable.hlsl b/clang/test/CodeGenHLSL/ArrayAssignable.hlsl
index a0dfe26e5d147b..e2ff2de68ed990 100644
--- a/clang/test/CodeGenHLSL/ArrayAssignable.hlsl
+++ b/clang/test/CodeGenHLSL/ArrayAssignable.hlsl
@@ -100,18 +100,16 @@ void arr_assign6() {
}
// CHECK-LABEL: define void {{.*}}arr_assign7
-// CHECK: [[Arr3:%.*]] = alloca [2 x [2 x i32]], align 4
-// CHECK-NEXT: [[Arr4:%.*]] = alloca [2 x [2 x i32]], align 4
-// CHECK-NEXT: [[Tmp:%.*]] = alloca [2 x i32], align 4
+// CHECK: [[Arr:%.*]] = alloca [2 x [2 x i32]], align 4
+// CHECK-NEXT: [[Arr2:%.*]] = alloca [2 x [2 x i32]], align 4
// CHECK-NOT: alloca
-// CHECK-NEXT: call void @llvm.memcpy.p0.p0.i32(ptr align 4 [[Arr3]], ptr align 4 {{@.*}}, i32 16, i1 false)
-// CHECK-NEXT: call void @llvm.memcpy.p0.p0.i32(ptr align 4 [[Arr4]], ptr align 4 {{@.*}}, i32 16, i1 false)
-// CHECK-NEXT: store i32 6, ptr [[Tmp]], align 4
-// CHECK-NEXT: [[AIE:%.*]] = getelementptr inbounds i32, ptr [[Tmp]], i32 1
-// CHECK-NEXT: store i32 6, ptr [[AIE]], align 4
-// CHECK-NEXT: call void @llvm.memcpy.p0.p0.i32(ptr align 4 [[Arr3]], ptr align 4 [[Arr4]], i32 16, i1 false)
-// CHECK-NEXT: [[Idx:%.*]] = getelementptr inbounds [2 x [2 x i32]], ptr [[Arr3]], i32 0, i32 0
-// CHECK-NEXT: call void @llvm.memcpy.p0.p0.i32(ptr align 4 [[Idx]], ptr align 4 [[Tmp]], i32 8, i1 false)
+// CHECK-NEXT: call void @llvm.memcpy.p0.p0.i32(ptr align 4 [[Arr]], ptr align 4 {{@.*}}, i32 16, i1 false)
+// CHECK-NEXT: call void @llvm.memcpy.p0.p0.i32(ptr align 4 [[Arr2]], ptr align 4 {{@.*}}, i32 16, i1 false)
+// CHECK-NEXT: call void @llvm.memcpy.p0.p0.i32(ptr align 4 [[Arr]], ptr align 4 [[Arr2]], i32 16, i1 false)
+// CHECK-NEXT: [[Idx:%.*]] = getelementptr inbounds [2 x [2 x i32]], ptr [[Arr]], i32 0, i32 0
+// CHECK-NEXT: store i32 6, ptr [[Idx]], align 4
+// CHECK-NEXT: [[Idx2:%.*]] = getelementptr inbounds i32, ptr %arrayidx, i32 1
+// CHECK-NEXT: store i32 6, ptr [[Idx2]], align 4
// CHECK-NEXT: ret void
void arr_assign7() {
int Arr[2][2] = {{0, 1}, {2, 3}};
diff --git a/clang/test/CodeGenHLSL/ArrayTemporary.hlsl b/clang/test/CodeGenHLSL/ArrayTemporary.hlsl
index 63a30b61440eb5..c254fe76a8eaf4 100644
--- a/clang/test/CodeGenHLSL/ArrayTemporary.hlsl
+++ b/clang/test/CodeGenHLSL/ArrayTemporary.hlsl
@@ -46,9 +46,8 @@ void call3() {
}
// CHECK-LABEL: define void {{.*}}call4{{.*}}(ptr
-// CHECK-SAME: noundef byval([2 x [2 x float]]) align 4 [[Arr:%.*]])
// CHECK: [[Tmp:%.*]] = alloca [2 x [2 x float]]
-// CHECK: call void @llvm.memcpy.p0.p0.i32(ptr align 4 [[Tmp]], ptr align 4 [[Arr]], i32 16, i1 false)
+// CHECK: store ptr {{.*}}, ptr [[Tmp]], align 4
// CHECK: call void {{.*}}fn3{{.*}}(ptr noundef byval([2 x [2 x float]]) align 4 [[Tmp]])
void call4(float Arr[2][2]) {
@@ -67,11 +66,11 @@ void call4(float Arr[2][2]) {
// CHECK: [[Tmp1:%.*]] = alloca [2 x float]
// CHECK: [[Tmp2:%.*]] = alloca [4 x float]
// CHECK: [[Tmp3:%.*]] = alloca [3 x i32]
-// CHECK: call void @llvm.memcpy.p0.p0.i32(ptr align 4 [[Tmp1]], ptr align 4 [[FA2]], i32 8, i1 false)
+// CHECK: store ptr {{.*}}, ptr [[Tmp1]], align 4
// CHECK: call void @"??$template_fn@$$BY01M@@YAXY01M at Z"(ptr noundef byval([2 x float]) align 4 [[Tmp1]])
-// CHECK: call void @llvm.memcpy.p0.p0.i32(ptr align 4 [[Tmp2]], ptr align 4 [[FA4]], i32 16, i1 false)
+// CHECK: store ptr {{.*}}, ptr [[Tmp2]], align 4
// CHECK: call void @"??$template_fn@$$BY03M@@YAXY03M at Z"(ptr noundef byval([4 x float]) align 4 [[Tmp2]])
-// CHECK: call void @llvm.memcpy.p0.p0.i32(ptr align 4 [[Tmp3]], ptr align 4 [[IA3]], i32 12, i1 false)
+// CHECK: store ptr {{.*}}, ptr [[Tmp3]], align 4
// CHECK: call void @"??$template_fn@$$BY02H@@YAXY02H at Z"(ptr noundef byval([3 x i32]) align 4 [[Tmp3]])
template<typename T>
@@ -83,7 +82,6 @@ void template_call(float FA2[2], float FA4[4], int IA3[3]) {
template_fn(IA3);
}
-
// Verify that Array parameter element access correctly codegens.
// CHECK-LABEL: define void {{.*}}element_access{{.*}}(ptr
// CHECK-SAME: noundef byval([2 x float]) align 4 [[FA2:%[0-9A-Z]+]]
diff --git a/clang/test/SemaHLSL/ArrayTemporary.hlsl b/clang/test/SemaHLSL/ArrayTemporary.hlsl
index dff9aff7d9b299..f1e446d8d3f8f1 100644
--- a/clang/test/SemaHLSL/ArrayTemporary.hlsl
+++ b/clang/test/SemaHLSL/ArrayTemporary.hlsl
@@ -75,17 +75,14 @@ void template_fn(T Val) {}
// CHECK: CallExpr {{.*}} 'void'
// CHECK-NEXT: ImplicitCastExpr {{.*}} 'void (*)(float[2])' <FunctionToPointerDecay>
// CHECK-NEXT: DeclRefExpr {{.*}} 'void (float[2])' lvalue Function {{.*}} 'template_fn' 'void (float[2])' (FunctionTemplate {{.*}} 'template_fn')
-// CHECK-NEXT: ImplicitCastExpr {{.*}} 'float[2]' <LValueToRValue>
// CHECK-NEXT: DeclRefExpr {{.*}} 'float[2]' lvalue ParmVar {{.*}} 'FA2' 'float[2]'
// CHECK-NEXT: CallExpr {{.*}} 'void'
// CHECK-NEXT: ImplicitCastExpr {{.*}} 'void (*)(float[4])' <FunctionToPointerDecay>
// CHECK-NEXT: DeclRefExpr {{.*}} 'void (float[4])' lvalue Function {{.*}} 'template_fn' 'void (float[4])' (FunctionTemplate {{.*}} 'template_fn')
-// CHECK-NEXT: ImplicitCastExpr {{.*}} 'float[4]' <LValueToRValue>
// CHECK-NEXT: DeclRefExpr {{.*}} 'float[4]' lvalue ParmVar {{.*}} 'FA4' 'float[4]'
// CHECK-NEXT: CallExpr {{.*}} 'void'
// CHECK-NEXT: ImplicitCastExpr {{.*}} 'void (*)(int[3])' <FunctionToPointerDecay>
// CHECK-NEXT: DeclRefExpr {{.*}} 'void (int[3])' lvalue Function {{.*}} 'template_fn' 'void (int[3])' (FunctionTemplate {{.*}} 'template_fn')
-// CHECK-NEXT: ImplicitCastExpr {{.*}} 'int[3]' <LValueToRValue>
// CHECK-NEXT: DeclRefExpr {{.*}} 'int[3]' lvalue ParmVar {{.*}} 'IA3' 'int[3]'
void call(float FA2[2], float FA4[4], int IA3[3]) {
>From ba56fbdc3c17b973dd4dd5757cf860447ba076d3 Mon Sep 17 00:00:00 2001
From: Sarah Spall <spall at planetbauer.com>
Date: Thu, 3 Oct 2024 17:01:14 +0000
Subject: [PATCH 4/5] new tests
---
clang/test/AST/HLSL/ArrayOutArgExpr.hlsl | 63 +++++++++++++++++++
.../BasicFeatures/ArrayOutputArguments.hlsl | 48 ++++++++++++++
.../Language/ArrayOutputArgs-errors.hlsl | 51 +++++++++++++++
3 files changed, 162 insertions(+)
create mode 100644 clang/test/AST/HLSL/ArrayOutArgExpr.hlsl
create mode 100644 clang/test/CodeGenHLSL/BasicFeatures/ArrayOutputArguments.hlsl
create mode 100644 clang/test/SemaHLSL/Language/ArrayOutputArgs-errors.hlsl
diff --git a/clang/test/AST/HLSL/ArrayOutArgExpr.hlsl b/clang/test/AST/HLSL/ArrayOutArgExpr.hlsl
new file mode 100644
index 00000000000000..10825bf0f93bc7
--- /dev/null
+++ b/clang/test/AST/HLSL/ArrayOutArgExpr.hlsl
@@ -0,0 +1,63 @@
+// RUN: %clang_cc1 -triple dxil-pc-shadermodel6.0-library -x hlsl -ast-dump %s | FileCheck %s
+
+// CHECK-LABEL: increment
+void increment(inout int Arr[2]) {
+ for (int I = 0; I < 2; I++)
+ Arr[0] += 2;
+}
+
+// CHECK-LABEL: call
+// CHECK: CallExpr 0x{{.*}} {{.*}} 'void'
+// CHECK: ImplicitCastExpr 0x{{.*}} {{.*}} 'void (*)(inout int[2])' <FunctionToPointerDecay>
+// CHECK: DeclRefExpr 0x{{.*}} {{.*}} 'void (inout int[2])' lvalue Function 0x{{.*}} 'increment' 'void (inout int[2])'
+// CHECK: HLSLOutArgExpr 0x{{.*}} {{.*}} 'int[2]' lvalue inout
+// CHECK: OpaqueValueExpr [[A:0x.*]] {{.*}} 'int[2]' lvalue
+// CHECK: DeclRefExpr [[B:0x.*]] {{.*}} 'int[2]' lvalue Var [[E:0x.*]] 'A' 'int[2]'
+// CHECK: OpaqueValueExpr [[C:0x.*]] {{.*}} 'int[2]' lvalue
+// CHECK: ImplicitCastExpr [[D:0x.*]] {{.*}} 'int[2]' <HLSLArrayRValue>
+// CHECK: OpaqueValueExpr [[A]] {{.*}} 'int[2]' lvalue
+// CHECK: DeclRefExpr [[B]] {{.*}} 'int[2]' lvalue Var [[E]] 'A' 'int[2]'
+// CHECK: BinaryOperator 0x{{.*}} {{.*}} 'int[2]' lvalue '='
+// CHECK: OpaqueValueExpr [[A]] {{.*}} 'int[2]' lvalue
+// CHECK: DeclRefExpr 0x{{.*}} {{.*}} 'int[2]' lvalue Var [[E]] 'A' 'int[2]'
+// CHECK: ImplicitCastExpr 0x{{.*}} {{.*}} 'int[2]' <HLSLArrayRValue>
+// CHECK: OpaqueValueExpr [[C]] {{.*}} 'int[2]' lvalue
+// CHECK: ImplicitCastExpr [[D]] {{.*}} 'int[2]' <HLSLArrayRValue>
+// CHECK: OpaqueValueExpr [[A]] {{.*}} 'int[2]' lvalue
+// CHECK: DeclRefExpr [[B]] {{.*}} 'int[2]' lvalue Var [[E]] 'A' 'int[2]'
+export int call() {
+ int A[2] = { 0, 1 };
+ increment(A);
+ return A[0];
+}
+
+// CHECK-LABEL: fn2
+void fn2(out int Arr[2]) {
+ Arr[0] += 5;
+ Arr[1] += 6;
+}
+
+// CHECK-LABEL: call2
+// CHECK: CallExpr 0x{{.*}} {{.*}} 'void'
+// CHECK: ImplicitCastExpr 0x{{.*}} {{.*}} 'void (*)(out int[2])' <FunctionToPointerDecay>
+// CHECK: DeclRefExpr 0x{{.*}} {{.*}} 'void (out int[2])' lvalue Function 0x{{.*}} 'fn2' 'void (out int[2])'
+// CHECK: HLSLOutArgExpr 0x{{.*}} {{.*}} 'int[2]' lvalue out
+// CHECK: OpaqueValueExpr [[A:0x.*]] {{.*}} 'int[2]' lvalue
+// CHECK: DeclRefExpr [[B:0x.*]] {{.*}} 'int[2]' lvalue Var [[E:0x.*]] 'A' 'int[2]'
+// CHECK: OpaqueValueExpr [[C:0x.*]] {{.*}} 'int[2]' lvalue
+// CHECK: ImplicitCastExpr [[D:0x.*]] {{.*}} 'int[2]' <HLSLArrayRValue>
+// CHECK: OpaqueValueExpr [[A]] {{.*}} 'int[2]' lvalue
+// CHECK: DeclRefExpr [[B]] {{.*}} 'int[2]' lvalue Var [[E]] 'A' 'int[2]'
+// CHECK: BinaryOperator 0x{{.*}} {{.*}} 'int[2]' lvalue '='
+// CHECK: OpaqueValueExpr [[A]] {{.*}} 'int[2]' lvalue
+// CHECK: DeclRefExpr [[B]] {{.*}} 'int[2]' lvalue Var [[E]] 'A' 'int[2]'
+// CHECK: ImplicitCastExpr 0x{{.*}} {{.*}} 'int[2]' <HLSLArrayRValue>
+// CHECK: OpaqueValueExpr [[C]] {{.*}} 'int[2]' lvalue
+// CHECK: ImplicitCastExpr [[D]] {{.*}} 'int[2]' <HLSLArrayRValue>
+// CHECK: OpaqueValueExpr [[A]] {{.*}} 'int[2]' lvalue
+// CHECK: DeclRefExpr [[B]] {{.*}} 'int[2]' lvalue Var [[E]] 'A' 'int[2]'
+export int call2() {
+ int A[2] = { 0, 1 };
+ fn2(A);
+ return 1;
+}
diff --git a/clang/test/CodeGenHLSL/BasicFeatures/ArrayOutputArguments.hlsl b/clang/test/CodeGenHLSL/BasicFeatures/ArrayOutputArguments.hlsl
new file mode 100644
index 00000000000000..d4a5cdb9445a7f
--- /dev/null
+++ b/clang/test/CodeGenHLSL/BasicFeatures/ArrayOutputArguments.hlsl
@@ -0,0 +1,48 @@
+// RUN: %clang_cc1 -triple dxil-pc-shadermodel6.0-library -disable-llvm-passes -emit-llvm -finclude-default-header -o - %s | FileCheck %s
+
+// CHECK-LABEL: increment
+void increment(inout int Arr[2]) {
+ for (int I = 0; I < 2; I++)
+ Arr[0] += 2;
+}
+
+// CHECK-LABEL: call
+// CHECK: [[A:%.*]] = alloca [2 x i32], align 4
+// CHECK-NEXT: [[Tmp:%.*]] = alloca [2 x i32], align 4
+// CHECK-NEXT: [[Tmp2:%.*]] = alloca [2 x i32], align 4
+// CHECK-NEXT: call void @llvm.memcpy.p0.p0.i32(ptr align 4 [[A]], ptr align 4 @{{.*}}, i32 8, i1 false)
+// CHECK-NEXT: call void @llvm.memcpy.p0.p0.i32(ptr align 4 [[Tmp]], ptr align 4 [[A]], i32 8, i1 false)
+// CHECK-NEXT: store ptr [[Tmp]], ptr [[Tmp2]], align 4
+// CHECK-NEXT: call void @"?increment{{.*}}(ptr noalias noundef byval([2 x i32]) align 4 [[Tmp2]]) #3
+// CHECK-NEXT: call void @llvm.memcpy.p0.p0.i32(ptr align 4 [[A]], ptr align 4 [[Tmp]], i32 8, i1 false)
+// CHECK-NEXT: [[Idx:%.*]] = getelementptr inbounds [2 x i32], ptr [[A]], i32 0, i32 0
+// CHECK-NEXT: [[B:%.*]] = load i32, ptr [[Idx]], align 4
+// CHECK-NEXT: ret i32 [[B]]
+export int call() {
+ int A[2] = { 0, 1 };
+ increment(A);
+ return A[0];
+}
+
+// CHECK-LABEL: fn2
+void fn2(out int Arr[2]) {
+ Arr[0] += 5;
+ Arr[1] += 6;
+}
+
+// CHECK-LABEL: call2
+// CHECK: [[A:%.*]] = alloca [2 x i32], align 4
+// CHECK-NEXT: [[Tmp:%.*]] = alloca [2 x i32], align 4
+// CHECK-NEXT: [[Tmp2:%.*]] = alloca [2 x i32], align 4
+// CHECK-NEXT: call void @llvm.memcpy.p0.p0.i32(ptr align 4 [[A]], ptr align 4 @{{.*}}, i32 8, i1 false)
+// CHECK-NEXT: store ptr [[Tmp]], ptr [[Tmp2]], align 4
+// CHECK-NEXT: call void @"?fn2{{.*}}(ptr noalias noundef byval([2 x i32]) align 4 [[Tmp2]]) #3
+// CHECK-NEXT: call void @llvm.memcpy.p0.p0.i32(ptr align 4 [[A]], ptr align 4 [[Tmp]], i32 8, i1 false)
+// CHECK-NEXT: [[Idx:%.*]] = getelementptr inbounds [2 x i32], ptr [[A]], i32 0, i32 0
+// CHECK-NEXT: [[B:%.*]] = load i32, ptr [[Idx]], align 4
+// CHECK-NEXT: ret i32 [[B]]
+export int call2() {
+ int A[2] = { 0, 1 };
+ fn2(A);
+ return A[0];
+}
diff --git a/clang/test/SemaHLSL/Language/ArrayOutputArgs-errors.hlsl b/clang/test/SemaHLSL/Language/ArrayOutputArgs-errors.hlsl
new file mode 100644
index 00000000000000..46bed0d5a7cbdc
--- /dev/null
+++ b/clang/test/SemaHLSL/Language/ArrayOutputArgs-errors.hlsl
@@ -0,0 +1,51 @@
+// RUN: %clang_cc1 -finclude-default-header -triple dxil-pc-shadermodel6.6-library %s -verify
+
+void increment(inout int Arr[2]) {
+ for (int I = 0; I < 2; I++)
+ Arr[0] += 2;
+}
+
+export int wrongSize() {
+ int A[3] = { 0, 1, 2 };
+ increment(A);
+ // expected-error at -1 {{no matching function for call to 'increment'}}
+ // expected-note@*:* {{candidate function not viable: no known conversion from 'int[3]' to 'int[2]' for 1st argument}}
+ return A[0];
+}
+
+export int wrongSize2() {
+ int A[1] = { 0 };
+ increment(A);
+ // expected-error at -1 {{no matching function for call to 'increment'}}
+ // expected-note@*:* {{candidate function not viable: no known conversion from 'int[1]' to 'int[2]' for 1st argument}}
+ return A[0];
+}
+
+export void tooFewArgs() {
+ increment();
+ // expected-error at -1 {{no matching function for call to 'increment'}}
+ // expected-note@*:* {{candidate function not viable: requires single argument 'Arr', but no arguments were provided}}
+}
+
+export float wrongType() {
+ float A[2] = { 0, 1 };
+ increment(A);
+ // expected-error at -1 {{no matching function for call to 'increment'}}
+ // expected-note@*:* {{candidate function not viable: no known conversion from 'float[2]' to 'int[2]' for 1st argument}}
+ return A[0];
+}
+
+export int wrongType2() {
+ increment(5);
+ // expected-error at -1 {{no matching function for call to 'increment'}}
+ // expected-note@*:* {{candidate function not viable: no known conversion from 'int' to 'int[2]' for 1st argument}}
+ return 1;
+}
+
+export void tooManyArgs() {
+ int A[2] = { 0, 1 };
+ int B[2] = { 2, 3 };
+ increment(A, B);
+ // expected-error at -1 {{no matching function for call to 'increment'}}
+ // expected-note@*:* {{candidate function not viable: requires single argument 'Arr', but 2 arguments were provided}}
+}
>From 9a42a1af5ebfb831ddd8d0263b9de5b75fbd62be Mon Sep 17 00:00:00 2001
From: Sarah Spall <spall at planetbauer.com>
Date: Thu, 3 Oct 2024 20:38:56 +0000
Subject: [PATCH 5/5] fix clang format issues
---
clang/lib/AST/ASTContext.cpp | 4 ++--
clang/lib/CodeGen/CGCall.cpp | 4 ++--
clang/lib/Sema/SemaExprCXX.cpp | 6 +++---
clang/lib/Sema/SemaOverload.cpp | 4 ++--
4 files changed, 9 insertions(+), 9 deletions(-)
diff --git a/clang/lib/AST/ASTContext.cpp b/clang/lib/AST/ASTContext.cpp
index b49783176f79d8..315850f941fc12 100644
--- a/clang/lib/AST/ASTContext.cpp
+++ b/clang/lib/AST/ASTContext.cpp
@@ -3836,8 +3836,8 @@ QualType ASTContext::getConstantArrayFromArrayParameterType(QualType Ty) const {
assert(Ty->isArrayParameterType() && "Ty must be an array parameter type.");
const auto *ATy = cast<ArrayParameterType>(Ty);
return getConstantArrayType(ATy->getElementType(), ATy->getSize(),
- ATy->getSizeExpr(), ATy->getSizeModifier(),
- ATy->getIndexTypeQualifiers().getAsOpaqueValue());
+ ATy->getSizeExpr(), ATy->getSizeModifier(),
+ ATy->getIndexTypeQualifiers().getAsOpaqueValue());
}
QualType ASTContext::getArrayParameterType(QualType Ty) const {
diff --git a/clang/lib/CodeGen/CGCall.cpp b/clang/lib/CodeGen/CGCall.cpp
index fe578cacc64de1..9bfd7436b8ba81 100644
--- a/clang/lib/CodeGen/CGCall.cpp
+++ b/clang/lib/CodeGen/CGCall.cpp
@@ -4691,8 +4691,8 @@ void CodeGenFunction::EmitCallArg(CallArgList &args, const Expr *E,
}
assert(type->isArrayParameterType() ||
- (type->isReferenceType() == E->isGLValue()) &&
- "reference binding to unmaterialized r-value!");
+ (type->isReferenceType() == E->isGLValue()) &&
+ "reference binding to unmaterialized r-value!");
// Add writeback for HLSLOutParamExpr.
if (const HLSLOutArgExpr *OE = dyn_cast<HLSLOutArgExpr>(E)) {
diff --git a/clang/lib/Sema/SemaExprCXX.cpp b/clang/lib/Sema/SemaExprCXX.cpp
index 89df42a837d024..ba1931dc4f90ff 100644
--- a/clang/lib/Sema/SemaExprCXX.cpp
+++ b/clang/lib/Sema/SemaExprCXX.cpp
@@ -4428,12 +4428,12 @@ Sema::PerformImplicitConversion(Expr *From, QualType ToType,
FromType = Context.getArrayParameterType(FromType);
From = ImpCastExprToType(From, FromType, CK_HLSLArrayRValue, VK_PRValue,
/*BasePath=*/nullptr, CCK)
- .get();
+ .get();
} else { // FromType must be ArrayParameterType
FromType = Context.getConstantArrayFromArrayParameterType(FromType);
From = ImpCastExprToType(From, FromType, CK_HLSLArrayRValue, VK_PRValue,
- /*BasePath=*/nullptr, CCK)
- .get();
+ /*BasePath=*/nullptr, CCK)
+ .get();
}
break;
diff --git a/clang/lib/Sema/SemaOverload.cpp b/clang/lib/Sema/SemaOverload.cpp
index 6dd6bdbd336860..8826c0bc75ae94 100644
--- a/clang/lib/Sema/SemaOverload.cpp
+++ b/clang/lib/Sema/SemaOverload.cpp
@@ -2215,7 +2215,7 @@ static bool IsStandardConversion(Sema &S, Expr* From, QualType ToType,
bool argIsLValue = From->isGLValue();
if (S.getLangOpts().HLSL && FromType->isConstantArrayType() &&
- ToType->isConstantArrayType()) {
+ ToType->isConstantArrayType()) {
// HLSL constant array parameters do not decay, so if the argument is a
// constant array and the parameter is an ArrayParameterType we have special
// handling here.
@@ -2236,7 +2236,7 @@ static bool IsStandardConversion(Sema &S, Expr* From, QualType ToType,
SCS.setAllToTypes(ToType);
return true;
} else if (argIsLValue && !FromType->canDecayToPointerType() &&
- S.Context.getCanonicalType(FromType) != S.Context.OverloadTy) {
+ S.Context.getCanonicalType(FromType) != S.Context.OverloadTy) {
// Lvalue-to-rvalue conversion (C++11 4.1):
// A glvalue (3.10) of a non-function, non-array type T can
// be converted to a prvalue.
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