https://github.com/inbelic created
https://github.com/llvm/llvm-project/pull/112400
- add clang builtin to Builtins.td
- link builtin in hlsl_intrinsics
- add codegen for spirv intrinsic and two directx intrinsics to retain
signedness information of the operands in CGBuiltin.cpp
- add semantic analysis in SemaHLSL.cpp
- add lowering of spirv intrinsic to spirv backend in
SPIRVInstructionSelector.cpp
- add directx intrinsic expansion to WaveActiveOp in
DXILIntrinsicExpansion.cpp
- add test cases to illustrate passes
>From 952271bd348f9d695a1c655a4fe3d3d37b192da4 Mon Sep 17 00:00:00 2001
From: Finn Plummer <canadienf...@gmail.com>
Date: Fri, 11 Oct 2024 15:06:15 -0700
Subject: [PATCH] [HLSL] Implement `WaveActiveSum` intrinsic
- add clang builtin to Builtins.td
- link builtin in hlsl_intrinsics
- add codegen for spirv intrinsic and two directx intrinsics to
retain signedness information of the operands in CGBuiltin.cpp
- add semantic analysis in SemaHLSL.cpp
- add lowering of spirv intrinsic to spirv backend in
SPIRVInstructionSelector.cpp
- add directx intrinsic expansion to WaveActiveOp in
DXILIntrinsicExpansion.cpp
- add test cases to illustrate passes
---
clang/include/clang/Basic/Builtins.td | 6 ++
.../clang/Basic/DiagnosticSemaKinds.td | 3 +
clang/lib/CodeGen/CGBuiltin.cpp | 34 +++++++
clang/lib/Headers/hlsl/hlsl_intrinsics.h | 99 +++++++++++++++++++
clang/lib/Sema/SemaHLSL.cpp | 32 ++++++
.../CodeGenHLSL/builtins/WaveActiveSum.hlsl | 48 +++++++++
.../BuiltIns/WaveActiveSum-errors.hlsl | 28 ++++++
llvm/include/llvm/IR/IntrinsicsDirectX.td | 3 +
llvm/include/llvm/IR/IntrinsicsSPIRV.td | 1 +
.../Target/DirectX/DXILIntrinsicExpansion.cpp | 21 ++++
.../Target/SPIRV/SPIRVInstructionSelector.cpp | 34 +++++++
llvm/test/CodeGen/DirectX/WaveActiveSum.ll | 78 +++++++++++++++
.../SPIRV/hlsl-intrinsics/WaveActiveSum.ll | 41 ++++++++
13 files changed, 428 insertions(+)
create mode 100644 clang/test/CodeGenHLSL/builtins/WaveActiveSum.hlsl
create mode 100644 clang/test/SemaHLSL/BuiltIns/WaveActiveSum-errors.hlsl
create mode 100644 llvm/test/CodeGen/DirectX/WaveActiveSum.ll
create mode 100644 llvm/test/CodeGen/SPIRV/hlsl-intrinsics/WaveActiveSum.ll
diff --git a/clang/include/clang/Basic/Builtins.td
b/clang/include/clang/Basic/Builtins.td
index 9ebee81fcb0d3d..2b4fb25c97504a 100644
--- a/clang/include/clang/Basic/Builtins.td
+++ b/clang/include/clang/Basic/Builtins.td
@@ -4721,6 +4721,12 @@ def HLSLWaveActiveCountBits : LangBuiltin<"HLSL_LANG"> {
let Prototype = "unsigned int(bool)";
}
+def HLSLWaveActiveSum : LangBuiltin<"HLSL_LANG"> {
+ let Spellings = ["__builtin_hlsl_wave_active_sum"];
+ let Attributes = [NoThrow, Const];
+ let Prototype = "void (...)";
+}
+
def HLSLWaveGetLaneIndex : LangBuiltin<"HLSL_LANG"> {
let Spellings = ["__builtin_hlsl_wave_get_lane_index"];
let Attributes = [NoThrow, Const];
diff --git a/clang/include/clang/Basic/DiagnosticSemaKinds.td
b/clang/include/clang/Basic/DiagnosticSemaKinds.td
index f4a2d4a3f0656a..e2f7384fb632a6 100644
--- a/clang/include/clang/Basic/DiagnosticSemaKinds.td
+++ b/clang/include/clang/Basic/DiagnosticSemaKinds.td
@@ -9232,6 +9232,9 @@ def err_typecheck_cond_incompatible_operands : Error<
def err_typecheck_expect_scalar_or_vector : Error<
"invalid operand of type %0 where %1 or "
"a vector of such type is required">;
+def err_typecheck_expect_scalar_or_vector_not_type : Error<
+ "invalid operand of type %0 where %1 or "
+ "a vector of such type is not allowed">;
def err_typecheck_expect_flt_or_vector : Error<
"invalid operand of type %0 where floating, complex or "
"a vector of such types is required">;
diff --git a/clang/lib/CodeGen/CGBuiltin.cpp b/clang/lib/CodeGen/CGBuiltin.cpp
index 2449b90a0e7902..4da012418cf902 100644
--- a/clang/lib/CodeGen/CGBuiltin.cpp
+++ b/clang/lib/CodeGen/CGBuiltin.cpp
@@ -18631,6 +18631,23 @@ static Intrinsic::ID
getDotProductIntrinsic(CGHLSLRuntime &RT, QualType QT) {
return RT.getUDotIntrinsic();
}
+// Return wave active sum that corresponds to the QT scalar type
+static Intrinsic::ID getWaveActiveSumIntrinsic(llvm::Triple::ArchType Arch,
+ CGHLSLRuntime &RT, QualType QT)
{
+ switch (Arch) {
+ case llvm::Triple::spirv:
+ return llvm::Intrinsic::spv_wave_active_sum;
+ case llvm::Triple::dxil: {
+ if (QT->isUnsignedIntegerType())
+ return llvm::Intrinsic::dx_wave_active_usum;
+ return llvm::Intrinsic::dx_wave_active_sum;
+ }
+ default:
+ llvm_unreachable("Intrinsic WaveActiveSum"
+ " not supported by target architecture");
+ }
+}
+
Value *CodeGenFunction::EmitHLSLBuiltinExpr(unsigned BuiltinID,
const CallExpr *E,
ReturnValueSlot ReturnValue) {
@@ -18866,6 +18883,23 @@ 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_sum: {
+ // Due to the use of variadic arguments, explicitly retreive argument
+ Value *OpExpr = EmitScalarExpr(E->getArg(0));
+ llvm::FunctionType *FT = llvm::FunctionType::get(
+ OpExpr->getType(), ArrayRef{OpExpr->getType()}, false);
+ Intrinsic::ID IID = getWaveActiveSumIntrinsic(
+ getTarget().getTriple().getArch(), CGM.getHLSLRuntime(),
+ E->getArg(0)->getType());
+
+ // Get overloaded name
+ std::string Name =
+ Intrinsic::getName(IID, ArrayRef{OpExpr->getType()}, &CGM.getModule());
+ return EmitRuntimeCall(CGM.CreateRuntimeFunction(FT, Name, {},
+ /*Local=*/false,
+
/*AssumeConvergent=*/true),
+ ArrayRef{OpExpr}, "hlsl.wave.active.sum");
+ }
case Builtin::BI__builtin_hlsl_wave_get_lane_index: {
return EmitRuntimeCall(CGM.CreateRuntimeFunction(
llvm::FunctionType::get(IntTy, {}, false),
"__hlsl_wave_get_lane_index",
diff --git a/clang/lib/Headers/hlsl/hlsl_intrinsics.h
b/clang/lib/Headers/hlsl/hlsl_intrinsics.h
index 813f8a317bf6bf..0349f99e496efa 100644
--- a/clang/lib/Headers/hlsl/hlsl_intrinsics.h
+++ b/clang/lib/Headers/hlsl/hlsl_intrinsics.h
@@ -2067,6 +2067,105 @@ _HLSL_AVAILABILITY(shadermodel, 6.0)
_HLSL_BUILTIN_ALIAS(__builtin_hlsl_wave_is_first_lane)
__attribute__((convergent)) bool WaveIsFirstLane();
+//===----------------------------------------------------------------------===//
+// WaveActiveSum builtins
+//===----------------------------------------------------------------------===//
+
+_HLSL_16BIT_AVAILABILITY(shadermodel, 6.0)
+_HLSL_BUILTIN_ALIAS(__builtin_hlsl_wave_active_sum)
+__attribute((convergent)) half WaveActiveSum(half);
+_HLSL_16BIT_AVAILABILITY(shadermodel, 6.0)
+_HLSL_BUILTIN_ALIAS(__builtin_hlsl_wave_active_sum)
+__attribute((convergent)) half2 WaveActiveSum(half2);
+_HLSL_16BIT_AVAILABILITY(shadermodel, 6.0)
+_HLSL_BUILTIN_ALIAS(__builtin_hlsl_wave_active_sum)
+__attribute((convergent)) half3 WaveActiveSum(half3);
+_HLSL_16BIT_AVAILABILITY(shadermodel, 6.0)
+_HLSL_BUILTIN_ALIAS(__builtin_hlsl_wave_active_sum)
+__attribute((convergent)) half4 WaveActiveSum(half4);
+
+#ifdef __HLSL_ENABLE_16_BIT
+_HLSL_AVAILABILITY(shadermodel, 6.0)
+_HLSL_BUILTIN_ALIAS(__builtin_hlsl_wave_active_sum)
+__attribute((convergent)) int16_t WaveActiveSum(int16_t);
+_HLSL_AVAILABILITY(shadermodel, 6.0)
+_HLSL_BUILTIN_ALIAS(__builtin_hlsl_wave_active_sum)
+__attribute((convergent)) int16_t2 WaveActiveSum(int16_t2);
+_HLSL_AVAILABILITY(shadermodel, 6.0)
+_HLSL_BUILTIN_ALIAS(__builtin_hlsl_wave_active_sum)
+__attribute((convergent)) int16_t3 WaveActiveSum(int16_t3);
+_HLSL_AVAILABILITY(shadermodel, 6.0)
+_HLSL_BUILTIN_ALIAS(__builtin_hlsl_wave_active_sum)
+__attribute((convergent)) int16_t4 WaveActiveSum(int16_t4);
+
+_HLSL_AVAILABILITY(shadermodel, 6.0)
+_HLSL_BUILTIN_ALIAS(__builtin_hlsl_wave_active_sum)
+__attribute((convergent)) uint16_t WaveActiveSum(uint16_t);
+_HLSL_AVAILABILITY(shadermodel, 6.0)
+_HLSL_BUILTIN_ALIAS(__builtin_hlsl_wave_active_sum)
+__attribute((convergent)) uint16_t2 WaveActiveSum(uint16_t2);
+_HLSL_AVAILABILITY(shadermodel, 6.0)
+_HLSL_BUILTIN_ALIAS(__builtin_hlsl_wave_active_sum)
+__attribute((convergent)) uint16_t3 WaveActiveSum(uint16_t3);
+_HLSL_AVAILABILITY(shadermodel, 6.0)
+_HLSL_BUILTIN_ALIAS(__builtin_hlsl_wave_active_sum)
+__attribute((convergent)) uint16_t4 WaveActiveSum(uint16_t4);
+#endif
+
+_HLSL_BUILTIN_ALIAS(__builtin_hlsl_wave_active_sum)
+__attribute((convergent)) int WaveActiveSum(int);
+_HLSL_BUILTIN_ALIAS(__builtin_hlsl_wave_active_sum)
+__attribute((convergent)) int2 WaveActiveSum(int2);
+_HLSL_BUILTIN_ALIAS(__builtin_hlsl_wave_active_sum)
+__attribute((convergent)) int3 WaveActiveSum(int3);
+_HLSL_BUILTIN_ALIAS(__builtin_hlsl_wave_active_sum)
+__attribute((convergent)) int4 WaveActiveSum(int4);
+
+_HLSL_BUILTIN_ALIAS(__builtin_hlsl_wave_active_sum)
+__attribute((convergent)) uint WaveActiveSum(uint);
+_HLSL_BUILTIN_ALIAS(__builtin_hlsl_wave_active_sum)
+__attribute((convergent)) uint2 WaveActiveSum(uint2);
+_HLSL_BUILTIN_ALIAS(__builtin_hlsl_wave_active_sum)
+__attribute((convergent)) uint3 WaveActiveSum(uint3);
+_HLSL_BUILTIN_ALIAS(__builtin_hlsl_wave_active_sum)
+__attribute((convergent)) uint4 WaveActiveSum(uint4);
+
+_HLSL_BUILTIN_ALIAS(__builtin_hlsl_wave_active_sum)
+__attribute((convergent)) int64_t WaveActiveSum(int64_t);
+_HLSL_BUILTIN_ALIAS(__builtin_hlsl_wave_active_sum)
+__attribute((convergent)) int64_t2 WaveActiveSum(int64_t2);
+_HLSL_BUILTIN_ALIAS(__builtin_hlsl_wave_active_sum)
+__attribute((convergent)) int64_t3 WaveActiveSum(int64_t3);
+_HLSL_BUILTIN_ALIAS(__builtin_hlsl_wave_active_sum)
+__attribute((convergent)) int64_t4 WaveActiveSum(int64_t4);
+
+_HLSL_BUILTIN_ALIAS(__builtin_hlsl_wave_active_sum)
+__attribute((convergent)) uint64_t WaveActiveSum(uint64_t);
+_HLSL_BUILTIN_ALIAS(__builtin_hlsl_wave_active_sum)
+__attribute((convergent)) uint64_t2 WaveActiveSum(uint64_t2);
+_HLSL_BUILTIN_ALIAS(__builtin_hlsl_wave_active_sum)
+__attribute((convergent)) uint64_t3 WaveActiveSum(uint64_t3);
+_HLSL_BUILTIN_ALIAS(__builtin_hlsl_wave_active_sum)
+__attribute((convergent)) uint64_t4 WaveActiveSum(uint64_t4);
+
+_HLSL_BUILTIN_ALIAS(__builtin_hlsl_wave_active_sum)
+__attribute((convergent)) float WaveActiveSum(float);
+_HLSL_BUILTIN_ALIAS(__builtin_hlsl_wave_active_sum)
+__attribute((convergent)) float2 WaveActiveSum(float2);
+_HLSL_BUILTIN_ALIAS(__builtin_hlsl_wave_active_sum)
+__attribute((convergent)) float3 WaveActiveSum(float3);
+_HLSL_BUILTIN_ALIAS(__builtin_hlsl_wave_active_sum)
+__attribute((convergent)) float4 WaveActiveSum(float4);
+
+_HLSL_BUILTIN_ALIAS(__builtin_hlsl_wave_active_sum)
+__attribute((convergent)) double WaveActiveSum(double);
+_HLSL_BUILTIN_ALIAS(__builtin_hlsl_wave_active_sum)
+__attribute((convergent)) double2 WaveActiveSum(double2);
+_HLSL_BUILTIN_ALIAS(__builtin_hlsl_wave_active_sum)
+__attribute((convergent)) double3 WaveActiveSum(double3);
+_HLSL_BUILTIN_ALIAS(__builtin_hlsl_wave_active_sum)
+__attribute((convergent)) double4 WaveActiveSum(double4);
+
//===----------------------------------------------------------------------===//
// sign builtins
//===----------------------------------------------------------------------===//
diff --git a/clang/lib/Sema/SemaHLSL.cpp b/clang/lib/Sema/SemaHLSL.cpp
index 05e6e7800112df..6dc091a656948f 100644
--- a/clang/lib/Sema/SemaHLSL.cpp
+++ b/clang/lib/Sema/SemaHLSL.cpp
@@ -1751,6 +1751,23 @@ static bool CheckScalarOrVector(Sema *S, CallExpr
*TheCall, QualType Scalar,
return false;
}
+static bool CheckScalarOrVectorNotType(Sema *S, CallExpr *TheCall,
+ QualType Scalar, unsigned ArgIndex) {
+ assert(TheCall->getNumArgs() >= ArgIndex);
+ QualType ArgType = TheCall->getArg(ArgIndex)->getType();
+ auto *VTy = ArgType->getAs<VectorType>();
+ // is the scalar or vector<scalar>
+ if (S->Context.hasSameUnqualifiedType(ArgType, Scalar) ||
+ (VTy &&
+ S->Context.hasSameUnqualifiedType(VTy->getElementType(), Scalar))) {
+ S->Diag(TheCall->getArg(0)->getBeginLoc(),
+ diag::err_typecheck_expect_scalar_or_vector_not_type)
+ << ArgType << Scalar;
+ return true;
+ }
+ return false;
+}
+
static bool CheckBoolSelect(Sema *S, CallExpr *TheCall) {
assert(TheCall->getNumArgs() == 3);
Expr *Arg1 = TheCall->getArg(1);
@@ -1985,6 +2002,21 @@ bool SemaHLSL::CheckBuiltinFunctionCall(unsigned
BuiltinID, CallExpr *TheCall) {
TheCall->setType(ArgTyA);
break;
}
+ case Builtin::BI__builtin_hlsl_wave_active_sum: {
+ if (SemaRef.checkArgCount(TheCall, 1))
+ return true;
+
+ // Ensure input expr type is a scalar/vector and the same as the return
type
+ if (CheckAnyScalarOrVector(&SemaRef, TheCall, 0))
+ return true;
+ if (CheckScalarOrVectorNotType(&SemaRef, TheCall, getASTContext().BoolTy,
+ 0))
+ return true;
+ ExprResult Expr = TheCall->getArg(0);
+ QualType ArgTyExpr = Expr.get()->getType();
+ TheCall->setType(ArgTyExpr);
+ break;
+ }
// Note these are llvm builtins that we want to catch invalid intrinsic
// generation. Normal handling of these builitns will occur elsewhere.
case Builtin::BI__builtin_elementwise_bitreverse: {
diff --git a/clang/test/CodeGenHLSL/builtins/WaveActiveSum.hlsl
b/clang/test/CodeGenHLSL/builtins/WaveActiveSum.hlsl
new file mode 100644
index 00000000000000..e5e463a6e9beea
--- /dev/null
+++ b/clang/test/CodeGenHLSL/builtins/WaveActiveSum.hlsl
@@ -0,0 +1,48 @@
+// RUN: %clang_cc1 -std=hlsl2021 -finclude-default-header -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 -std=hlsl2021 -finclude-default-header -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.
+
+// CHECK-LABEL: test_int
+int test_int(int expr) {
+ // CHECK-SPIRV: %[[#entry_tok:]] = call token
@llvm.experimental.convergence.entry()
+ // CHECK-SPIRV: %[[RET:.*]] = call [[TY:.*]]
@llvm.spv.wave.active.sum.i32([[TY]] %[[#]]) [ "convergencectrl"(token
%[[#entry_tok]]) ]
+ // CHECK-DXIL: %[[RET:.*]] = call [[TY:.*]]
@llvm.dx.wave.active.sum.i32([[TY]] %[[#]])
+ // CHECK: ret [[TY]] %[[RET]]
+ return WaveActiveSum(expr);
+}
+
+// CHECK-DXIL: declare [[TY]] @llvm.dx.wave.active.sum.i32([[TY]]) #[[#attr:]]
+// CHECK-SPIRV: declare [[TY]] @llvm.spv.wave.active.sum.i32([[TY]])
#[[#attr:]]
+
+// CHECK-LABEL: test_uint64_t
+uint64_t test_uint64_t(uint64_t expr) {
+ // CHECK-SPIRV: %[[#entry_tok1:]] = call token
@llvm.experimental.convergence.entry()
+ // CHECK-SPIRV: %[[RET:.*]] = call [[TY:.*]]
@llvm.spv.wave.active.sum.i64([[TY]] %[[#]]) [ "convergencectrl"(token
%[[#entry_tok1]]) ]
+ // CHECK-DXIL: %[[RET:.*]] = call [[TY:.*]]
@llvm.dx.wave.active.usum.i64([[TY]] %[[#]])
+ // CHECK: ret [[TY]] %[[RET]]
+ return WaveActiveSum(expr);
+}
+
+// CHECK-DXIL: declare [[TY]] @llvm.dx.wave.active.usum.i64([[TY]]) #[[#attr:]]
+// CHECK-SPIRV: declare [[TY]] @llvm.spv.wave.active.sum.i64([[TY]])
#[[#attr:]]
+
+// Test basic lowering to runtime function call with array and float value.
+
+// CHECK-LABEL: test_floatv4
+float4 test_floatv4(float4 expr) {
+ // CHECK-SPIRV: %[[#entry_tok2:]] = call token
@llvm.experimental.convergence.entry()
+ // CHECK-SPIRV: %[[RET1:.*]] = call [[TY1:.*]]
@llvm.spv.wave.active.sum.v4f32([[TY1]] %[[#]]) [ "convergencectrl"(token
%[[#entry_tok2]]) ]
+ // CHECK-DXIL: %[[RET1:.*]] = call [[TY1:.*]]
@llvm.dx.wave.active.sum.v4f32([[TY1]] %[[#]])
+ // CHECK: ret [[TY1]] %[[RET1]]
+ return WaveActiveSum(expr);
+}
+
+// CHECK-DXIL: declare [[TY1]] @llvm.dx.wave.active.sum.v4f32([[TY1]])
#[[#attr]]
+// CHECK-SPIRV: declare [[TY1]] @llvm.spv.wave.active.sum.v4f32([[TY1]])
#[[#attr]]
+
+// CHECK: attributes #[[#attr]] = {{{.*}} convergent {{.*}}}
diff --git a/clang/test/SemaHLSL/BuiltIns/WaveActiveSum-errors.hlsl
b/clang/test/SemaHLSL/BuiltIns/WaveActiveSum-errors.hlsl
new file mode 100644
index 00000000000000..e475df8994f3e7
--- /dev/null
+++ b/clang/test/SemaHLSL/BuiltIns/WaveActiveSum-errors.hlsl
@@ -0,0 +1,28 @@
+// RUN: %clang_cc1 -finclude-default-header -triple
dxil-pc-shadermodel6.6-library %s -emit-llvm-only -disable-llvm-passes -verify
+
+int test_too_few_arg() {
+ return __builtin_hlsl_wave_active_sum();
+ // expected-error@-1 {{too few arguments to function call, expected 1, have
0}}
+}
+
+float2 test_too_many_arg(float2 p0) {
+ return __builtin_hlsl_wave_active_sum(p0, p0);
+ // expected-error@-1 {{too many arguments to function call, expected 1, have
2}}
+}
+
+bool test_expr_bool_type_check(bool p0) {
+ return __builtin_hlsl_wave_active_sum(p0);
+ // expected-error@-1 {{invalid operand of type 'bool' where 'bool' or a
vector of such type is not allowed}}
+}
+
+bool2 test_expr_bool_vec_type_check(bool2 p0) {
+ return __builtin_hlsl_wave_active_sum(p0);
+ // expected-error@-1 {{invalid operand of type 'bool2' (aka 'vector<bool,
2>') where 'bool' or a vector of such type is not allowed}}
+}
+
+struct S { float f; };
+
+S test_expr_struct_type_check(S p0) {
+ return __builtin_hlsl_wave_active_sum(p0);
+ // expected-error@-1 {{invalid operand of type 'S' where a scalar or vector
is required}}
+}
diff --git a/llvm/include/llvm/IR/IntrinsicsDirectX.td
b/llvm/include/llvm/IR/IntrinsicsDirectX.td
index f2b9e286ebb476..51812bbb99110c 100644
--- a/llvm/include/llvm/IR/IntrinsicsDirectX.td
+++ b/llvm/include/llvm/IR/IntrinsicsDirectX.td
@@ -83,6 +83,9 @@ def int_dx_imad : DefaultAttrsIntrinsic<[llvm_anyint_ty],
[LLVMMatchType<0>, LLV
def int_dx_umad : DefaultAttrsIntrinsic<[llvm_anyint_ty], [LLVMMatchType<0>,
LLVMMatchType<0>, LLVMMatchType<0>], [IntrNoMem]>;
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_op : DefaultAttrsIntrinsic<[llvm_any_ty],
[LLVMMatchType<0>, llvm_i8_ty, llvm_i8_ty], [IntrConvergent, IntrNoMem]>;
+def int_dx_wave_active_sum : DefaultAttrsIntrinsic<[llvm_any_ty],
[LLVMMatchType<0>], [IntrConvergent, IntrNoMem]>;
+def int_dx_wave_active_usum : DefaultAttrsIntrinsic<[llvm_anyint_ty],
[LLVMMatchType<0>], [IntrConvergent, IntrNoMem]>;
def int_dx_wave_is_first_lane : DefaultAttrsIntrinsic<[llvm_i1_ty], [],
[IntrConvergent]>;
def int_dx_sign : DefaultAttrsIntrinsic<[LLVMScalarOrSameVectorWidth<0,
llvm_i32_ty>], [llvm_any_ty], [IntrNoMem]>;
def int_dx_step : DefaultAttrsIntrinsic<[LLVMMatchType<0>], [llvm_anyfloat_ty,
LLVMMatchType<0>], [IntrNoMem]>;
diff --git a/llvm/include/llvm/IR/IntrinsicsSPIRV.td
b/llvm/include/llvm/IR/IntrinsicsSPIRV.td
index 92d2f67399d263..0ec5985e2c7f01 100644
--- a/llvm/include/llvm/IR/IntrinsicsSPIRV.td
+++ b/llvm/include/llvm/IR/IntrinsicsSPIRV.td
@@ -82,6 +82,7 @@ let TargetPrefix = "spv" in {
DefaultAttrsIntrinsic<[LLVMVectorElementType<0>],
[llvm_anyint_ty, LLVMScalarOrSameVectorWidth<0, LLVMVectorElementType<0>>],
[IntrNoMem, Commutative] >;
+ def int_spv_wave_active_sum : DefaultAttrsIntrinsic<[llvm_any_ty],
[LLVMMatchType<0>], [IntrConvergent, IntrNoMem]>;
def int_spv_wave_is_first_lane : DefaultAttrsIntrinsic<[llvm_i1_ty], [],
[IntrConvergent]>;
def int_spv_sign : DefaultAttrsIntrinsic<[LLVMScalarOrSameVectorWidth<0,
llvm_i32_ty>], [llvm_any_ty], [IntrNoMem]>;
def int_spv_radians : DefaultAttrsIntrinsic<[LLVMMatchType<0>],
[llvm_anyfloat_ty], [IntrNoMem]>;
diff --git a/llvm/lib/Target/DirectX/DXILIntrinsicExpansion.cpp
b/llvm/lib/Target/DirectX/DXILIntrinsicExpansion.cpp
index 1e84a7216013da..ca9792eb03d947 100644
--- a/llvm/lib/Target/DirectX/DXILIntrinsicExpansion.cpp
+++ b/llvm/lib/Target/DirectX/DXILIntrinsicExpansion.cpp
@@ -65,6 +65,8 @@ static bool isIntrinsicExpansion(Function &F) {
case Intrinsic::dx_sign:
case Intrinsic::dx_step:
case Intrinsic::dx_radians:
+ case Intrinsic::dx_wave_active_sum:
+ case Intrinsic::dx_wave_active_usum:
return true;
}
return false;
@@ -451,6 +453,19 @@ static Value *expandRadiansIntrinsic(CallInst *Orig) {
return Builder.CreateFMul(X, PiOver180);
}
+template <int OpcodeVal, bool Signed>
+static Value *expandWaveActiveOpIntrinsic(CallInst *Orig) {
+ Value *X = Orig->getOperand(0);
+ Type *Ty = X->getType();
+
+ IRBuilder<> Builder(Orig);
+ IntegerType *IntTy = IntegerType::get(Builder.getContext(), 8);
+ Constant *Opcode = ConstantInt::get(IntTy, OpcodeVal);
+ Constant *SOp = ConstantInt::get(IntTy, Signed ? 0 : 1);
+ return Builder.CreateIntrinsic(Ty, Intrinsic::dx_wave_active_op,
+ {X, Opcode, SOp}, nullptr, "dx.active.op");
+}
+
static Intrinsic::ID getMaxForClamp(Type *ElemTy,
Intrinsic::ID ClampIntrinsic) {
if (ClampIntrinsic == Intrinsic::dx_uclamp)
@@ -574,6 +589,12 @@ static bool expandIntrinsic(Function &F, CallInst *Orig) {
case Intrinsic::dx_radians:
Result = expandRadiansIntrinsic(Orig);
break;
+ case Intrinsic::dx_wave_active_sum:
+ Result = expandWaveActiveOpIntrinsic<0, true>(Orig);
+ break;
+ case Intrinsic::dx_wave_active_usum:
+ Result = expandWaveActiveOpIntrinsic<0, false>(Orig);
+ break;
}
if (Result) {
Orig->replaceAllUsesWith(Result);
diff --git a/llvm/lib/Target/SPIRV/SPIRVInstructionSelector.cpp
b/llvm/lib/Target/SPIRV/SPIRVInstructionSelector.cpp
index e8b769b6fd6900..fe146d115d829e 100644
--- a/llvm/lib/Target/SPIRV/SPIRVInstructionSelector.cpp
+++ b/llvm/lib/Target/SPIRV/SPIRVInstructionSelector.cpp
@@ -164,6 +164,9 @@ class SPIRVInstructionSelector : public InstructionSelector
{
bool selectIntegerDot(Register ResVReg, const SPIRVType *ResType,
MachineInstr &I) const;
+ bool selectWaveActiveSum(Register ResVReg, const SPIRVType *ResType,
+ MachineInstr &I) const;
+
void renderImm32(MachineInstrBuilder &MIB, const MachineInstr &I,
int OpIdx) const;
void renderFImm64(MachineInstrBuilder &MIB, const MachineInstr &I,
@@ -1758,6 +1761,34 @@ bool SPIRVInstructionSelector::selectSign(Register
ResVReg,
return Result;
}
+bool SPIRVInstructionSelector::selectWaveActiveSum(Register ResVReg,
+ const SPIRVType *ResType,
+ MachineInstr &I) const {
+ assert(I.getNumOperands() == 3);
+ assert(I.getOperand(2).isReg());
+ MachineBasicBlock &BB = *I.getParent();
+ Register InputRegister = I.getOperand(2).getReg();
+ SPIRVType *InputType = GR.getSPIRVTypeForVReg(InputRegister);
+
+ if (!InputType)
+ report_fatal_error("Input Type could not be determined.");
+
+ // IntTy is used to define the execution scope, set to 3 to denote a
+ // cross-lane interaction equivalent to a SPIR-V subgroup.
+ SPIRVType *IntTy = GR.getOrCreateSPIRVIntegerType(32, I, TII);
+
+ // Retreive the operation to use based on input type
+ bool IsFloatTy = GR.isScalarOrVectorOfType(InputRegister,
SPIRV::OpTypeFloat);
+ auto Opcode =
+ IsFloatTy ? SPIRV::OpGroupNonUniformFAdd : SPIRV::OpGroupNonUniformIAdd;
+ return BuildMI(BB, I, I.getDebugLoc(), TII.get(Opcode))
+ .addDef(ResVReg)
+ .addUse(GR.getSPIRVTypeID(ResType))
+ .addUse(GR.getOrCreateConstInt(3, I, IntTy, TII))
+ .addImm(0) // group operation set to 0 to denote a reduction operation
+ .addUse(I.getOperand(2).getReg());
+}
+
bool SPIRVInstructionSelector::selectBitreverse(Register ResVReg,
const SPIRVType *ResType,
MachineInstr &I) const {
@@ -2533,6 +2564,9 @@ bool SPIRVInstructionSelector::selectIntrinsic(Register
ResVReg,
} break;
case Intrinsic::spv_saturate:
return selectSaturate(ResVReg, ResType, I);
+ case Intrinsic::spv_wave_active_sum: {
+ return selectWaveActiveSum(ResVReg, ResType, I);
+ }
case Intrinsic::spv_wave_is_first_lane: {
SPIRVType *IntTy = GR.getOrCreateSPIRVIntegerType(32, I, TII);
return BuildMI(BB, I, I.getDebugLoc(),
diff --git a/llvm/test/CodeGen/DirectX/WaveActiveSum.ll
b/llvm/test/CodeGen/DirectX/WaveActiveSum.ll
new file mode 100644
index 00000000000000..ca2253ecf982df
--- /dev/null
+++ b/llvm/test/CodeGen/DirectX/WaveActiveSum.ll
@@ -0,0 +1,78 @@
+; RUN: opt -S -dxil-intrinsic-expansion -dxil-op-lower
-mtriple=dxil-pc-shadermodel6.3-compute %s | FileCheck %s
+
+; Test that for scalar values, WaveReadLaneAt maps down to the DirectX op
+
+define noundef half @wave_active_sum_half(half noundef %expr) {
+entry:
+; CHECK: call half @dx.op.waveActiveOp.f16(i32 119, half %expr, i8 0, i8 0)
+ %ret = call half @llvm.dx.wave.active.sum.f16(half %expr)
+ ret half %ret
+}
+
+define noundef float @wave_active_sum_float(float noundef %expr) {
+entry:
+; CHECK: call float @dx.op.waveActiveOp.f32(i32 119, float %expr, i8 0, i8 0)
+ %ret = call float @llvm.dx.wave.active.sum(float %expr)
+ ret float %ret
+}
+
+define noundef double @wave_active_sum_double(double noundef %expr) {
+entry:
+; CHECK: call double @dx.op.waveActiveOp.f64(i32 119, double %expr, i8 0, i8 0)
+ %ret = call double @llvm.dx.wave.active.sum(double %expr)
+ ret double %ret
+}
+
+define noundef i16 @wave_active_sum_i16(i16 noundef %expr) {
+entry:
+; CHECK: call i16 @dx.op.waveActiveOp.i16(i32 119, i16 %expr, i8 0, i8 0)
+ %ret = call i16 @llvm.dx.wave.active.sum.i16(i16 %expr)
+ ret i16 %ret
+}
+
+define noundef i32 @wave_active_sum_i32(i32 noundef %expr) {
+entry:
+; CHECK: call i32 @dx.op.waveActiveOp.i32(i32 119, i32 %expr, i8 0, i8 0)
+ %ret = call i32 @llvm.dx.wave.active.sum.i32(i32 %expr)
+ ret i32 %ret
+}
+
+define noundef i64 @wave_active_sum_i64(i64 noundef %expr) {
+entry:
+; CHECK: call i64 @dx.op.waveActiveOp.i64(i32 119, i64 %expr, i8 0, i8 0)
+ %ret = call i64 @llvm.dx.wave.active.sum.i64(i64 %expr)
+ ret i64 %ret
+}
+
+define noundef i16 @wave_active_usum_i16(i16 noundef %expr) {
+entry:
+; CHECK: call i16 @dx.op.waveActiveOp.i16(i32 119, i16 %expr, i8 0, i8 1)
+ %ret = call i16 @llvm.dx.wave.active.usum.i16(i16 %expr)
+ ret i16 %ret
+}
+
+define noundef i32 @wave_active_usum_i32(i32 noundef %expr) {
+entry:
+; CHECK: call i32 @dx.op.waveActiveOp.i32(i32 119, i32 %expr, i8 0, i8 1)
+ %ret = call i32 @llvm.dx.wave.active.usum.i32(i32 %expr)
+ ret i32 %ret
+}
+
+define noundef i64 @wave_active_usum_i64(i64 noundef %expr) {
+entry:
+; CHECK: call i64 @dx.op.waveActiveOp.i64(i32 119, i64 %expr, i8 0, i8 1)
+ %ret = call i64 @llvm.dx.wave.active.usum.i64(i64 %expr)
+ ret i64 %ret
+}
+
+declare half @llvm.dx.wave.active.sum.f16(half)
+declare float @llvm.dx.wave.active.sum.f32(float)
+declare double @llvm.dx.wave.active.sum.f64(double)
+
+declare i16 @llvm.dx.wave.active.sum.i16(i16)
+declare i32 @llvm.dx.wave.active.sum.i32(i32)
+declare i64 @llvm.dx.wave.active.sum.i64(i64)
+
+declare i16 @llvm.dx.wave.active.usum.i16(i16)
+declare i32 @llvm.dx.wave.active.usum.i32(i32)
+declare i64 @llvm.dx.wave.active.usum.i64(i64)
diff --git a/llvm/test/CodeGen/SPIRV/hlsl-intrinsics/WaveActiveSum.ll
b/llvm/test/CodeGen/SPIRV/hlsl-intrinsics/WaveActiveSum.ll
new file mode 100644
index 00000000000000..3e65cb628ad34a
--- /dev/null
+++ b/llvm/test/CodeGen/SPIRV/hlsl-intrinsics/WaveActiveSum.ll
@@ -0,0 +1,41 @@
+; RUN: llc -verify-machineinstrs -O0 -mtriple=spirv32v1.3-vulkan-unknown %s -o
- | FileCheck %s
+; RUN: %if spirv-tools %{ llc -O0 -mtriple=spirv32v1.3-vulkan-unknown %s -o -
-filetype=obj | spirv-val %}
+
+; Test lowering to spir-v backend for various types and scalar/vector
+
+; CHECK-DAG: %[[#f16:]] = OpTypeFloat 16
+; CHECK-DAG: %[[#f32:]] = OpTypeFloat 32
+; CHECK-DAG: %[[#uint:]] = OpTypeInt 32 0
+; CHECK-DAG: %[[#v4_half:]] = OpTypeVector %[[#f16]] 4
+; CHECK-DAG: %[[#scope:]] = OpConstant %[[#uint]] 3
+
+; CHECK-LABEL: Begin function test_float
+; CHECK: %[[#fexpr:]] = OpFunctionParameter %[[#f32]]
+define float @test_float(float %fexpr) {
+entry:
+; CHECK: %[[#fret:]] = OpGroupNonUniformFAdd %[[#f32]] %[[#scope]] Reduce
%[[#fexpr]]
+ %0 = call float @llvm.spv.wave.active.sum.f32(float %fexpr)
+ ret float %0
+}
+
+; CHECK-LABEL: Begin function test_int
+; CHECK: %[[#iexpr:]] = OpFunctionParameter %[[#uint]]
+define i32 @test_int(i32 %iexpr) {
+entry:
+; CHECK: %[[#iret:]] = OpGroupNonUniformIAdd %[[#uint]] %[[#scope]] Reduce
%[[#iexpr]]
+ %0 = call i32 @llvm.spv.wave.active.sum.i32(i32 %iexpr)
+ ret i32 %0
+}
+
+; CHECK-LABEL: Begin function test_vhalf
+; CHECK: %[[#vbexpr:]] = OpFunctionParameter %[[#v4_half]]
+define <4 x half> @test_vhalf(<4 x half> %vbexpr) {
+entry:
+; CHECK: %[[#vhalfret:]] = OpGroupNonUniformFAdd %[[#v4_half]] %[[#scope]]
Reduce %[[#vbexpr]]
+ %0 = call <4 x half> @llvm.spv.wave.active.sum.v4half(<4 x half> %vbexpr)
+ ret <4 x half> %0
+}
+
+declare float @llvm.spv.wave.active.sum.f32(float)
+declare i32 @llvm.spv.wave.active.sum.i32(i32)
+declare <4 x half> @llvm.spv.wave.active.sum.v4half(<4 x half>)
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