[clang] [llvm] [HLSL] Implement `WaveActiveAllTrue` Intrinsic (PR #117245)
Ashley Coleman via cfe-commits
cfe-commits at lists.llvm.org
Thu Nov 21 14:02:27 PST 2024
https://github.com/V-FEXrt created https://github.com/llvm/llvm-project/pull/117245
Resolves https://github.com/llvm/llvm-project/issues/99161
- [x] Implement `WaveActiveAllTrue` clang builtin,
- [x] Link `WaveActiveAllTrue` clang builtin with `hlsl_intrinsics.h`
- [x] Add sema checks for `WaveActiveAllTrue` to `CheckHLSLBuiltinFunctionCall` in `SemaChecking.cpp`
- [x] Add codegen for `WaveActiveAllTrue` to `EmitHLSLBuiltinExpr` in `CGBuiltin.cpp`
- [x] Add codegen tests to `clang/test/CodeGenHLSL/builtins/WaveActiveAllTrue.hlsl`
- [x] Add sema tests to `clang/test/SemaHLSL/BuiltIns/WaveActiveAllTrue-errors.hlsl`
- [x] Create the `int_dx_WaveActiveAllTrue` intrinsic in `IntrinsicsDirectX.td`
- [x] Create the `DXILOpMapping` of `int_dx_WaveActiveAllTrue` to `114` in `DXIL.td`
- [x] Create the `WaveActiveAllTrue.ll` and `WaveActiveAllTrue_errors.ll` tests in `llvm/test/CodeGen/DirectX/`
- [x] Create the `int_spv_WaveActiveAllTrue` intrinsic in `IntrinsicsSPIRV.td`
- [x] In SPIRVInstructionSelector.cpp create the `WaveActiveAllTrue` lowering and map it to `int_spv_WaveActiveAllTrue` in `SPIRVInstructionSelector::selectIntrinsic`.
- [x] Create SPIR-V backend test case in `llvm/test/CodeGen/SPIRV/hlsl-intrinsics/WaveActiveAllTrue.ll`
>From 73afef24940e4d0978220063df87d3ebda8da615 Mon Sep 17 00:00:00 2001
From: Ashley Coleman <ascoleman at microsoft.com>
Date: Thu, 21 Nov 2024 08:42:31 -0700
Subject: [PATCH] [HLSL] Implement WaveActiveAllTrue Intrinsic
---
clang/include/clang/Basic/Builtins.td | 6 ++++++
clang/lib/CodeGen/CGBuiltin.cpp | 10 +++++++++
clang/lib/CodeGen/CGHLSLRuntime.h | 1 +
clang/lib/Headers/hlsl/hlsl_intrinsics.h | 9 ++++++++
.../builtins/WaveActiveAllTrue.hlsl | 17 +++++++++++++++
.../BuiltIns/WaveActiveAllTrue-errors.hlsl | 21 +++++++++++++++++++
llvm/include/llvm/IR/IntrinsicsDirectX.td | 1 +
llvm/include/llvm/IR/IntrinsicsSPIRV.td | 1 +
llvm/lib/Target/DirectX/DXIL.td | 8 +++++++
.../Target/SPIRV/SPIRVInstructionSelector.cpp | 2 ++
.../test/CodeGen/DirectX/WaveActiveAllTrue.ll | 10 +++++++++
.../hlsl-intrinsics/WaveActiveAllTrue.ll | 21 +++++++++++++++++++
12 files changed, 107 insertions(+)
create mode 100644 clang/test/CodeGenHLSL/builtins/WaveActiveAllTrue.hlsl
create mode 100644 clang/test/SemaHLSL/BuiltIns/WaveActiveAllTrue-errors.hlsl
create mode 100644 llvm/test/CodeGen/DirectX/WaveActiveAllTrue.ll
create mode 100644 llvm/test/CodeGen/SPIRV/hlsl-intrinsics/WaveActiveAllTrue.ll
diff --git a/clang/include/clang/Basic/Builtins.td b/clang/include/clang/Basic/Builtins.td
index 290feb58754adb..8aa5719d736f94 100644
--- a/clang/include/clang/Basic/Builtins.td
+++ b/clang/include/clang/Basic/Builtins.td
@@ -4750,6 +4750,12 @@ def HLSLAny : LangBuiltin<"HLSL_LANG"> {
let Prototype = "bool(...)";
}
+def HLSLWaveActiveAllTrue : LangBuiltin<"HLSL_LANG"> {
+ let Spellings = ["__builtin_hlsl_wave_active_all_true"];
+ let Attributes = [NoThrow, Const];
+ let Prototype = "bool(bool)";
+}
+
def HLSLWaveActiveAnyTrue : LangBuiltin<"HLSL_LANG"> {
let Spellings = ["__builtin_hlsl_wave_active_any_true"];
let Attributes = [NoThrow, Const];
diff --git a/clang/lib/CodeGen/CGBuiltin.cpp b/clang/lib/CodeGen/CGBuiltin.cpp
index ff7132fd8bc1e7..522a6ce3b999e3 100644
--- a/clang/lib/CodeGen/CGBuiltin.cpp
+++ b/clang/lib/CodeGen/CGBuiltin.cpp
@@ -19282,6 +19282,16 @@ case Builtin::BI__builtin_hlsl_elementwise_isinf: {
/*ReturnType=*/Op0->getType(), CGM.getHLSLRuntime().getStepIntrinsic(),
ArrayRef<Value *>{Op0, Op1}, nullptr, "hlsl.step");
}
+ case Builtin::BI__builtin_hlsl_wave_active_all_true: {
+ Value *Op = EmitScalarExpr(E->getArg(0));
+ llvm::Type *Ty = Op->getType();
+ assert(Ty->isIntegerTy(1) &&
+ "Intrinsic WaveActiveAllTrue operand must be a bool");
+
+ Intrinsic::ID ID = CGM.getHLSLRuntime().getWaveActiveAllTrueIntrinsic();
+ return EmitRuntimeCall(
+ Intrinsic::getOrInsertDeclaration(&CGM.getModule(), ID), {Op});
+ }
case Builtin::BI__builtin_hlsl_wave_active_any_true: {
Value *Op = EmitScalarExpr(E->getArg(0));
assert(Op->getType()->isIntegerTy(1) &&
diff --git a/clang/lib/CodeGen/CGHLSLRuntime.h b/clang/lib/CodeGen/CGHLSLRuntime.h
index a8e0ed42b79a35..29c0fe1acabccc 100644
--- a/clang/lib/CodeGen/CGHLSLRuntime.h
+++ b/clang/lib/CodeGen/CGHLSLRuntime.h
@@ -91,6 +91,7 @@ class CGHLSLRuntime {
GENERATE_HLSL_INTRINSIC_FUNCTION(UDot, udot)
GENERATE_HLSL_INTRINSIC_FUNCTION(Dot4AddI8Packed, dot4add_i8packed)
GENERATE_HLSL_INTRINSIC_FUNCTION(Dot4AddU8Packed, dot4add_u8packed)
+ GENERATE_HLSL_INTRINSIC_FUNCTION(WaveActiveAllTrue, wave_all)
GENERATE_HLSL_INTRINSIC_FUNCTION(WaveActiveAnyTrue, wave_any)
GENERATE_HLSL_INTRINSIC_FUNCTION(WaveActiveCountBits, wave_active_countbits)
GENERATE_HLSL_INTRINSIC_FUNCTION(WaveIsFirstLane, wave_is_first_lane)
diff --git a/clang/lib/Headers/hlsl/hlsl_intrinsics.h b/clang/lib/Headers/hlsl/hlsl_intrinsics.h
index a484d04155d6b2..a99b3b7e4202b8 100644
--- a/clang/lib/Headers/hlsl/hlsl_intrinsics.h
+++ b/clang/lib/Headers/hlsl/hlsl_intrinsics.h
@@ -2223,6 +2223,15 @@ float4 trunc(float4);
// Wave* builtins
//===----------------------------------------------------------------------===//
+/// \brief Returns true if the expression is true in all active lanes in the
+/// current wave.
+///
+/// \param Val The boolean expression to evaluate.
+/// \return True if the expression is true in all lanes.
+_HLSL_AVAILABILITY(shadermodel, 6.0)
+_HLSL_BUILTIN_ALIAS(__builtin_hlsl_wave_active_all_true)
+__attribute__((convergent)) bool WaveActiveAllTrue(bool Val);
+
/// \brief Returns true if the expression is true in any active lane in the
/// current wave.
///
diff --git a/clang/test/CodeGenHLSL/builtins/WaveActiveAllTrue.hlsl b/clang/test/CodeGenHLSL/builtins/WaveActiveAllTrue.hlsl
new file mode 100644
index 00000000000000..df530a9cee561a
--- /dev/null
+++ b/clang/test/CodeGenHLSL/builtins/WaveActiveAllTrue.hlsl
@@ -0,0 +1,17 @@
+// RUN: %clang_cc1 -finclude-default-header -fnative-half-type -triple \
+// RUN: dxil-pc-shadermodel6.3-compute %s -emit-llvm -disable-llvm-passes -o - | \
+// RUN: FileCheck %s --check-prefixes=CHECK,CHECK-DXIL
+// RUN: %clang_cc1 -finclude-default-header -fnative-half-type -triple \
+// RUN: spirv-pc-vulkan-compute %s -emit-llvm -disable-llvm-passes -o - | \
+// RUN: FileCheck %s --check-prefixes=CHECK,CHECK-SPIRV
+
+// Test basic lowering to runtime function call for int values.
+
+// CHECK-LABEL: define {{.*}}test
+bool test(bool p1) {
+ // CHECK-SPIRV: %[[#entry_tok0:]] = call token @llvm.experimental.convergence.entry()
+ // CHECK-SPIRV: %[[RET:.*]] = call spir_func i1 @llvm.spv.wave.all(i1 %{{[a-zA-Z0-9]+}}) [ "convergencectrl"(token %[[#entry_tok0]]) ]
+ // CHECK-DXIL: %[[RET:.*]] = call i1 @llvm.dx.wave.all(i1 %{{[a-zA-Z0-9]+}})
+ // CHECK: ret i1 %[[RET]]
+ return WaveActiveAllTrue(p1);
+}
diff --git a/clang/test/SemaHLSL/BuiltIns/WaveActiveAllTrue-errors.hlsl b/clang/test/SemaHLSL/BuiltIns/WaveActiveAllTrue-errors.hlsl
new file mode 100644
index 00000000000000..b0d0fdfca5e18d
--- /dev/null
+++ b/clang/test/SemaHLSL/BuiltIns/WaveActiveAllTrue-errors.hlsl
@@ -0,0 +1,21 @@
+// RUN: %clang_cc1 -finclude-default-header -triple dxil-pc-shadermodel6.6-library %s -emit-llvm-only -disable-llvm-passes -verify
+
+bool test_too_few_arg() {
+ return __builtin_hlsl_wave_active_all_true();
+ // expected-error at -1 {{too few arguments to function call, expected 1, have 0}}
+}
+
+bool test_too_many_arg(bool p0) {
+ return __builtin_hlsl_wave_active_all_true(p0, p0);
+ // expected-error at -1 {{too many arguments to function call, expected 1, have 2}}
+}
+
+struct Foo
+{
+ int a;
+};
+
+bool test_type_check(Foo p0) {
+ return __builtin_hlsl_wave_active_all_true(p0);
+ // expected-error at -1 {{no viable conversion from 'Foo' to 'bool'}}
+}
diff --git a/llvm/include/llvm/IR/IntrinsicsDirectX.td b/llvm/include/llvm/IR/IntrinsicsDirectX.td
index 62688eae36e9a8..8bb70d6a9b84a3 100644
--- a/llvm/include/llvm/IR/IntrinsicsDirectX.td
+++ b/llvm/include/llvm/IR/IntrinsicsDirectX.td
@@ -94,6 +94,7 @@ def int_dx_umad : DefaultAttrsIntrinsic<[llvm_anyint_ty], [LLVMMatchType<0>, LLV
def int_dx_normalize : DefaultAttrsIntrinsic<[LLVMMatchType<0>], [llvm_anyfloat_ty], [IntrNoMem]>;
def int_dx_rsqrt : DefaultAttrsIntrinsic<[llvm_anyfloat_ty], [LLVMMatchType<0>], [IntrNoMem]>;
def int_dx_wave_active_countbits : DefaultAttrsIntrinsic<[llvm_i32_ty], [llvm_i1_ty], [IntrConvergent, IntrNoMem]>;
+def int_dx_wave_all : DefaultAttrsIntrinsic<[llvm_i1_ty], [llvm_i1_ty], [IntrConvergent, IntrNoMem]>;
def int_dx_wave_any : DefaultAttrsIntrinsic<[llvm_i1_ty], [llvm_i1_ty], [IntrConvergent, IntrNoMem]>;
def int_dx_wave_getlaneindex : DefaultAttrsIntrinsic<[llvm_i32_ty], [], [IntrConvergent, IntrNoMem]>;
def int_dx_wave_is_first_lane : DefaultAttrsIntrinsic<[llvm_i1_ty], [], [IntrConvergent]>;
diff --git a/llvm/include/llvm/IR/IntrinsicsSPIRV.td b/llvm/include/llvm/IR/IntrinsicsSPIRV.td
index e1157085832866..63539fa9466098 100644
--- a/llvm/include/llvm/IR/IntrinsicsSPIRV.td
+++ b/llvm/include/llvm/IR/IntrinsicsSPIRV.td
@@ -86,6 +86,7 @@ let TargetPrefix = "spv" in {
def int_spv_dot4add_i8packed : DefaultAttrsIntrinsic<[llvm_i32_ty], [llvm_i32_ty, llvm_i32_ty, llvm_i32_ty], [IntrNoMem]>;
def int_spv_dot4add_u8packed : DefaultAttrsIntrinsic<[llvm_i32_ty], [llvm_i32_ty, llvm_i32_ty, llvm_i32_ty], [IntrNoMem]>;
def int_spv_wave_active_countbits : DefaultAttrsIntrinsic<[llvm_i32_ty], [llvm_i1_ty], [IntrConvergent, IntrNoMem]>;
+ def int_spv_wave_all : DefaultAttrsIntrinsic<[llvm_i1_ty], [llvm_i1_ty], [IntrConvergent, IntrNoMem]>;
def int_spv_wave_any : DefaultAttrsIntrinsic<[llvm_i1_ty], [llvm_i1_ty], [IntrConvergent, IntrNoMem]>;
def int_spv_wave_is_first_lane : DefaultAttrsIntrinsic<[llvm_i1_ty], [], [IntrConvergent]>;
def int_spv_wave_readlane : DefaultAttrsIntrinsic<[llvm_any_ty], [LLVMMatchType<0>, llvm_i32_ty], [IntrConvergent, IntrNoMem]>;
diff --git a/llvm/lib/Target/DirectX/DXIL.td b/llvm/lib/Target/DirectX/DXIL.td
index 36228a5e0dce18..5b2e2d116fe0aa 100644
--- a/llvm/lib/Target/DirectX/DXIL.td
+++ b/llvm/lib/Target/DirectX/DXIL.td
@@ -861,6 +861,14 @@ def CreateHandleFromBinding : DXILOp<217, createHandleFromBinding> {
let stages = [Stages<DXIL1_6, [all_stages]>];
}
+def WaveActiveAllTrue : DXILOp<334, waveAllTrue> {
+ let Doc = "returns true if the expression is true in all of the active lanes in the current wave";
+ let LLVMIntrinsic = int_dx_wave_all;
+ let arguments = [Int1Ty];
+ let result = Int1Ty;
+ let stages = [Stages<DXIL1_0, [all_stages]>];
+}
+
def WaveActiveAnyTrue : DXILOp<113, waveAnyTrue> {
let Doc = "returns true if the expression is true in any of the active lanes in the current wave";
let LLVMIntrinsic = int_dx_wave_any;
diff --git a/llvm/lib/Target/SPIRV/SPIRVInstructionSelector.cpp b/llvm/lib/Target/SPIRV/SPIRVInstructionSelector.cpp
index 6b23b0d6b6f787..fcbd1429144b58 100644
--- a/llvm/lib/Target/SPIRV/SPIRVInstructionSelector.cpp
+++ b/llvm/lib/Target/SPIRV/SPIRVInstructionSelector.cpp
@@ -2830,6 +2830,8 @@ bool SPIRVInstructionSelector::selectIntrinsic(Register ResVReg,
return selectExtInst(ResVReg, ResType, I, CL::s_clamp, GL::SClamp);
case Intrinsic::spv_wave_active_countbits:
return selectWaveActiveCountBits(ResVReg, ResType, I);
+ case Intrinsic::spv_wave_all:
+ return selectWaveOpInst(ResVReg, ResType, I, SPIRV::OpGroupNonUniformAll);
case Intrinsic::spv_wave_any:
return selectWaveOpInst(ResVReg, ResType, I, SPIRV::OpGroupNonUniformAny);
case Intrinsic::spv_wave_is_first_lane:
diff --git a/llvm/test/CodeGen/DirectX/WaveActiveAllTrue.ll b/llvm/test/CodeGen/DirectX/WaveActiveAllTrue.ll
new file mode 100644
index 00000000000000..73b3e4f7843845
--- /dev/null
+++ b/llvm/test/CodeGen/DirectX/WaveActiveAllTrue.ll
@@ -0,0 +1,10 @@
+; RUN: opt -S -dxil-op-lower -mtriple=dxil-pc-shadermodel6.3-compute %s | FileCheck %s
+
+define noundef i1 @wave_all_simple(i1 noundef %p1) {
+entry:
+; CHECK: call i1 @dx.op.waveAllTrue(i32 334, i1 %p1)
+ %ret = call i1 @llvm.dx.wave.all(i1 %p1)
+ ret i1 %ret
+}
+
+declare i1 @llvm.dx.wave.all(i1)
diff --git a/llvm/test/CodeGen/SPIRV/hlsl-intrinsics/WaveActiveAllTrue.ll b/llvm/test/CodeGen/SPIRV/hlsl-intrinsics/WaveActiveAllTrue.ll
new file mode 100644
index 00000000000000..d030353ad93b4f
--- /dev/null
+++ b/llvm/test/CodeGen/SPIRV/hlsl-intrinsics/WaveActiveAllTrue.ll
@@ -0,0 +1,21 @@
+; RUN: llc -verify-machineinstrs -O0 -mtriple=spirv-unknown-unknown %s -o - | FileCheck %s
+; RUN: %if spirv-tools %{ llc -O0 -mtriple=spirv-unknown-unknown %s -o - -filetype=obj | spirv-val %}
+
+; CHECK-DAG: %[[#bool:]] = OpTypeBool
+; CHECK-DAG: %[[#uint:]] = OpTypeInt 32 0
+; CHECK-DAG: %[[#scope:]] = OpConstant %[[#uint]] 3
+; CHECK-DAG: OpCapability GroupNonUniformVote
+
+; CHECK-LABEL: Begin function test_wave_all
+define i1 @test_wave_all(i1 %p1) #0 {
+entry:
+; CHECK: %[[#param:]] = OpFunctionParameter %[[#bool]]
+; CHECK: %{{.+}} = OpGroupNonUniformAll %[[#bool]] %[[#scope]] %[[#param]]
+ %0 = call token @llvm.experimental.convergence.entry()
+ %ret = call i1 @llvm.spv.wave.all(i1 %p1) [ "convergencectrl"(token %0) ]
+ ret i1 %ret
+}
+
+declare i1 @llvm.spv.wave.all(i1) #0
+
+attributes #0 = { convergent }
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