[clang] [llvm] [HLSL] Implementation of dot intrinsic (PR #81190)
Farzon Lotfi via cfe-commits
cfe-commits at lists.llvm.org
Thu Feb 15 16:15:32 PST 2024
https://github.com/farzonl updated https://github.com/llvm/llvm-project/pull/81190
>From 2baaf5b41d80639fa7dfe739ad5501d2f5359bfa Mon Sep 17 00:00:00 2001
From: Farzon Lotfi <farzon at farzon.org>
Date: Thu, 8 Feb 2024 11:08:59 -0500
Subject: [PATCH] [HLSL] Implementation of dot intrinsic This change implements
#70073
HLSL has a dot intrinsic defined here:
https://learn.microsoft.com/en-us/windows/win32/direct3dhlsl/dx-graphics-hlsl-dot
The intrinsic itself is defined as a HLSL_LANG LangBuiltin in Builtins.td.
This is used to associate all the dot product typdef defined hlsl_intrinsics.h
with a single intrinsic check in CGBuiltin.cpp & SemaChecking.cpp.
In IntrinsicsDirectX.td we define the llvmIR for the dot product.
A few goals were in mind for this IR. First it should operate on only
vectors. Second the return type should be the vector element type. Third
the second parameter vector should be of the same size as the first
parameter. Finally `a dot b` should be the same as `b dot a`.
In CGBuiltin.cpp hlsl has built on top of existing clang intrinsics via EmitBuiltinExpr. Dot
product though is language specific intrinsic and so is guarded behind getLangOpts().HLSL.
The call chain looks like this: EmitBuiltinExpr -> EmitHLSLBuiltinExp
EmitHLSLBuiltinExp dot product intrinsics makes a destinction
between vectors and scalars. This is because HLSL supports dot product on scalars which simplifies down to multiply.
Sema.h & SemaChecking.cpp saw the addition of CheckHLSLBuiltinFunctionCall, a language specific semantic validation that can be expanded for other hlsl specific intrinsics.
---
clang/include/clang/Basic/Builtins.td | 6 +
.../clang/Basic/DiagnosticSemaKinds.td | 2 +
clang/include/clang/Sema/Sema.h | 1 +
clang/lib/CodeGen/CGBuiltin.cpp | 49 +++++
clang/lib/CodeGen/CodeGenFunction.h | 1 +
clang/lib/Headers/hlsl/hlsl_intrinsics.h | 80 ++++++++
clang/lib/Sema/SemaChecking.cpp | 84 +++++++-
clang/test/CodeGenHLSL/builtins/dot.hlsl | 179 ++++++++++++++++++
clang/test/SemaHLSL/BuiltIns/dot-errors.hlsl | 46 +++++
llvm/include/llvm/IR/IntrinsicsDirectX.td | 5 +
10 files changed, 448 insertions(+), 5 deletions(-)
create mode 100644 clang/test/CodeGenHLSL/builtins/dot.hlsl
create mode 100644 clang/test/SemaHLSL/BuiltIns/dot-errors.hlsl
diff --git a/clang/include/clang/Basic/Builtins.td b/clang/include/clang/Basic/Builtins.td
index df74026c5d2d50..771c4f5d4121f4 100644
--- a/clang/include/clang/Basic/Builtins.td
+++ b/clang/include/clang/Basic/Builtins.td
@@ -4524,6 +4524,12 @@ def HLSLCreateHandle : LangBuiltin<"HLSL_LANG"> {
let Prototype = "void*(unsigned char)";
}
+def HLSLDotProduct : LangBuiltin<"HLSL_LANG"> {
+ let Spellings = ["__builtin_hlsl_dot"];
+ let Attributes = [NoThrow, Const, CustomTypeChecking];
+ let Prototype = "void(...)";
+}
+
// Builtins for XRay.
def XRayCustomEvent : Builtin {
let Spellings = ["__xray_customevent"];
diff --git a/clang/include/clang/Basic/DiagnosticSemaKinds.td b/clang/include/clang/Basic/DiagnosticSemaKinds.td
index fb44495199ee56..9957f4e743e9cb 100644
--- a/clang/include/clang/Basic/DiagnosticSemaKinds.td
+++ b/clang/include/clang/Basic/DiagnosticSemaKinds.td
@@ -10267,6 +10267,8 @@ def err_vec_builtin_non_vector : Error<
"first two arguments to %0 must be vectors">;
def err_vec_builtin_incompatible_vector : Error<
"first two arguments to %0 must have the same type">;
+def err_vec_builtin_incompatible_size : Error<
+ "first two arguments to %0 must have the same size">;
def err_vsx_builtin_nonconstant_argument : Error<
"argument %0 to %1 must be a 2-bit unsigned literal (i.e. 0, 1, 2 or 3)">;
diff --git a/clang/include/clang/Sema/Sema.h b/clang/include/clang/Sema/Sema.h
index 53f06bcaeca166..d79fd07c8069e5 100644
--- a/clang/include/clang/Sema/Sema.h
+++ b/clang/include/clang/Sema/Sema.h
@@ -14054,6 +14054,7 @@ class Sema final {
bool CheckPPCBuiltinFunctionCall(const TargetInfo &TI, unsigned BuiltinID,
CallExpr *TheCall);
bool CheckAMDGCNBuiltinFunctionCall(unsigned BuiltinID, CallExpr *TheCall);
+ bool CheckHLSLBuiltinFunctionCall(unsigned BuiltinID, CallExpr *TheCall);
bool CheckRISCVLMUL(CallExpr *TheCall, unsigned ArgNum);
bool CheckRISCVBuiltinFunctionCall(const TargetInfo &TI, unsigned BuiltinID,
CallExpr *TheCall);
diff --git a/clang/lib/CodeGen/CGBuiltin.cpp b/clang/lib/CodeGen/CGBuiltin.cpp
index 9bc60466d09be6..1d8c1d26470639 100644
--- a/clang/lib/CodeGen/CGBuiltin.cpp
+++ b/clang/lib/CodeGen/CGBuiltin.cpp
@@ -44,6 +44,7 @@
#include "llvm/IR/IntrinsicsAMDGPU.h"
#include "llvm/IR/IntrinsicsARM.h"
#include "llvm/IR/IntrinsicsBPF.h"
+#include "llvm/IR/IntrinsicsDirectX.h"
#include "llvm/IR/IntrinsicsHexagon.h"
#include "llvm/IR/IntrinsicsNVPTX.h"
#include "llvm/IR/IntrinsicsPowerPC.h"
@@ -5982,6 +5983,10 @@ RValue CodeGenFunction::EmitBuiltinExpr(const GlobalDecl GD, unsigned BuiltinID,
llvm_unreachable("Bad evaluation kind in EmitBuiltinExpr");
}
+ // EmitHLSLBuiltinExpr will check getLangOpts().HLSL
+ if (Value *V = EmitHLSLBuiltinExpr(BuiltinID, E))
+ return RValue::get(V);
+
if (getLangOpts().HIPStdPar && getLangOpts().CUDAIsDevice)
return EmitHipStdParUnsupportedBuiltin(this, FD);
@@ -17895,6 +17900,50 @@ llvm::Value *CodeGenFunction::EmitScalarOrConstFoldImmArg(unsigned ICEArguments,
return Arg;
}
+Value *CodeGenFunction::EmitHLSLBuiltinExpr(unsigned BuiltinID,
+ const CallExpr *E) {
+ if (!getLangOpts().HLSL)
+ return nullptr;
+
+ switch (BuiltinID) {
+ case Builtin::BI__builtin_hlsl_dot: {
+ Value *Op0 = EmitScalarExpr(E->getArg(0));
+ Value *Op1 = EmitScalarExpr(E->getArg(1));
+ llvm::Type *T0 = Op0->getType();
+ llvm::Type *T1 = Op1->getType();
+ if (!T0->isVectorTy() && !T1->isVectorTy()) {
+ if (T0->isFloatingPointTy()) {
+ return Builder.CreateFMul(Op0, Op1, "dx.dot");
+ }
+
+ if (T0->isIntegerTy()) {
+ return Builder.CreateMul(Op0, Op1, "dx.dot");
+ }
+ assert(
+ false &&
+ "Dot product on a scalar is only supported on integers and floats.");
+ }
+ assert(T0->isVectorTy() && T1->isVectorTy() &&
+ "Dot product of vector and scalar is not supported.");
+
+ // NOTE: this assert will need to be revisited after overload resoltion
+ // PR merges.
+ assert(T0->getScalarType() == T1->getScalarType() &&
+ "Dot product of vectors need the same element types.");
+
+ auto *VecTy0 = E->getArg(0)->getType()->getAs<VectorType>();
+ auto *VecTy1 = E->getArg(1)->getType()->getAs<VectorType>();
+ assert(VecTy0->getNumElements() == VecTy1->getNumElements() &&
+ "Dot product requires vectors to be of the same size.");
+
+ return Builder.CreateIntrinsic(
+ /*ReturnType*/ T0->getScalarType(), Intrinsic::dx_dot,
+ ArrayRef<Value *>{Op0, Op1}, nullptr, "dx.dot");
+ } break;
+ }
+ return nullptr;
+}
+
Value *CodeGenFunction::EmitAMDGPUBuiltinExpr(unsigned BuiltinID,
const CallExpr *E) {
llvm::AtomicOrdering AO = llvm::AtomicOrdering::SequentiallyConsistent;
diff --git a/clang/lib/CodeGen/CodeGenFunction.h b/clang/lib/CodeGen/CodeGenFunction.h
index caa6a327550baa..3169802ffc2c7d 100644
--- a/clang/lib/CodeGen/CodeGenFunction.h
+++ b/clang/lib/CodeGen/CodeGenFunction.h
@@ -4405,6 +4405,7 @@ class CodeGenFunction : public CodeGenTypeCache {
llvm::Value *EmitX86BuiltinExpr(unsigned BuiltinID, const CallExpr *E);
llvm::Value *EmitPPCBuiltinExpr(unsigned BuiltinID, const CallExpr *E);
llvm::Value *EmitAMDGPUBuiltinExpr(unsigned BuiltinID, const CallExpr *E);
+ llvm::Value *EmitHLSLBuiltinExpr(unsigned BuiltinID, const CallExpr *E);
llvm::Value *EmitScalarOrConstFoldImmArg(unsigned ICEArguments, unsigned Idx,
const CallExpr *E);
llvm::Value *EmitSystemZBuiltinExpr(unsigned BuiltinID, const CallExpr *E);
diff --git a/clang/lib/Headers/hlsl/hlsl_intrinsics.h b/clang/lib/Headers/hlsl/hlsl_intrinsics.h
index f87ac977997962..2e2026931ed7cd 100644
--- a/clang/lib/Headers/hlsl/hlsl_intrinsics.h
+++ b/clang/lib/Headers/hlsl/hlsl_intrinsics.h
@@ -179,6 +179,86 @@ double3 cos(double3);
_HLSL_BUILTIN_ALIAS(__builtin_elementwise_cos)
double4 cos(double4);
+//===----------------------------------------------------------------------===//
+// dot product builtins
+//===----------------------------------------------------------------------===//
+_HLSL_16BIT_AVAILABILITY(shadermodel, 6.2)
+_HLSL_BUILTIN_ALIAS(__builtin_hlsl_dot)
+half dot(half, half);
+_HLSL_16BIT_AVAILABILITY(shadermodel, 6.2)
+_HLSL_BUILTIN_ALIAS(__builtin_hlsl_dot)
+half dot(half2, half2);
+_HLSL_16BIT_AVAILABILITY(shadermodel, 6.2)
+_HLSL_BUILTIN_ALIAS(__builtin_hlsl_dot)
+half dot(half3, half3);
+_HLSL_16BIT_AVAILABILITY(shadermodel, 6.2)
+_HLSL_BUILTIN_ALIAS(__builtin_hlsl_dot)
+half dot(half4, half4);
+
+#ifdef __HLSL_ENABLE_16_BIT
+_HLSL_AVAILABILITY(shadermodel, 6.2)
+_HLSL_BUILTIN_ALIAS(__builtin_hlsl_dot)
+int16_t dot(int16_t, int16_t);
+_HLSL_AVAILABILITY(shadermodel, 6.2)
+_HLSL_BUILTIN_ALIAS(__builtin_hlsl_dot)
+int16_t dot(int16_t2, int16_t2);
+_HLSL_AVAILABILITY(shadermodel, 6.2)
+_HLSL_BUILTIN_ALIAS(__builtin_hlsl_dot)
+int16_t dot(int16_t3, int16_t3);
+_HLSL_AVAILABILITY(shadermodel, 6.2)
+_HLSL_BUILTIN_ALIAS(__builtin_hlsl_dot)
+int16_t dot(int16_t4, int16_t4);
+
+_HLSL_AVAILABILITY(shadermodel, 6.2)
+_HLSL_BUILTIN_ALIAS(__builtin_hlsl_dot)
+uint16_t dot(uint16_t, uint16_t);
+_HLSL_AVAILABILITY(shadermodel, 6.2)
+_HLSL_BUILTIN_ALIAS(__builtin_hlsl_dot)
+uint16_t dot(uint16_t2, uint16_t2);
+_HLSL_AVAILABILITY(shadermodel, 6.2)
+_HLSL_BUILTIN_ALIAS(__builtin_hlsl_dot)
+uint16_t dot(uint16_t3, uint16_t3);
+_HLSL_AVAILABILITY(shadermodel, 6.2)
+_HLSL_BUILTIN_ALIAS(__builtin_hlsl_dot)
+uint16_t dot(uint16_t4, uint16_t4);
+#endif
+
+_HLSL_BUILTIN_ALIAS(__builtin_hlsl_dot)
+float dot(float, float);
+_HLSL_BUILTIN_ALIAS(__builtin_hlsl_dot)
+float dot(float2, float2);
+_HLSL_BUILTIN_ALIAS(__builtin_hlsl_dot)
+float dot(float3, float3);
+_HLSL_BUILTIN_ALIAS(__builtin_hlsl_dot)
+float dot(float4, float4);
+
+_HLSL_BUILTIN_ALIAS(__builtin_hlsl_dot)
+double dot(double, double);
+
+_HLSL_BUILTIN_ALIAS(__builtin_hlsl_dot)
+int dot(int, int);
+_HLSL_BUILTIN_ALIAS(__builtin_hlsl_dot)
+int dot(int2, int2);
+_HLSL_BUILTIN_ALIAS(__builtin_hlsl_dot)
+int dot(int3, int3);
+_HLSL_BUILTIN_ALIAS(__builtin_hlsl_dot)
+int dot(int4, int4);
+
+_HLSL_BUILTIN_ALIAS(__builtin_hlsl_dot)
+uint dot(uint, uint);
+_HLSL_BUILTIN_ALIAS(__builtin_hlsl_dot)
+uint dot(uint2, uint2);
+_HLSL_BUILTIN_ALIAS(__builtin_hlsl_dot)
+uint dot(uint3, uint3);
+_HLSL_BUILTIN_ALIAS(__builtin_hlsl_dot)
+uint dot(uint4, uint4);
+
+_HLSL_BUILTIN_ALIAS(__builtin_hlsl_dot)
+int64_t dot(int64_t, int64_t);
+
+_HLSL_BUILTIN_ALIAS(__builtin_hlsl_dot)
+uint64_t dot(uint64_t, uint64_t);
+
//===----------------------------------------------------------------------===//
// floor builtins
//===----------------------------------------------------------------------===//
diff --git a/clang/lib/Sema/SemaChecking.cpp b/clang/lib/Sema/SemaChecking.cpp
index 8e763384774444..b5f3f8b2e96db7 100644
--- a/clang/lib/Sema/SemaChecking.cpp
+++ b/clang/lib/Sema/SemaChecking.cpp
@@ -2120,10 +2120,11 @@ bool Sema::CheckTSBuiltinFunctionCall(const TargetInfo &TI, unsigned BuiltinID,
// not a valid type, emit an error message and return true. Otherwise return
// false.
static bool checkMathBuiltinElementType(Sema &S, SourceLocation Loc,
- QualType Ty) {
- if (!Ty->getAs<VectorType>() && !ConstantMatrixType::isValidElementType(Ty)) {
+ QualType ArgTy, int ArgIndex) {
+ if (!ArgTy->getAs<VectorType>() &&
+ !ConstantMatrixType::isValidElementType(ArgTy)) {
return S.Diag(Loc, diag::err_builtin_invalid_arg_type)
- << 1 << /* vector, integer or float ty*/ 0 << Ty;
+ << ArgIndex << /* vector, integer or float ty*/ 0 << ArgTy;
}
return false;
@@ -2958,6 +2959,10 @@ Sema::CheckBuiltinFunctionCall(FunctionDecl *FDecl, unsigned BuiltinID,
}
}
+ if (getLangOpts().HLSL && CheckHLSLBuiltinFunctionCall(BuiltinID, TheCall)) {
+ return ExprError();
+ }
+
// Since the target specific builtins for each arch overlap, only check those
// of the arch we are compiling for.
if (Context.BuiltinInfo.isTSBuiltin(BuiltinID)) {
@@ -5158,6 +5163,75 @@ bool Sema::CheckPPCMMAType(QualType Type, SourceLocation TypeLoc) {
return false;
}
+// Note: returning true in this case results in CheckBuiltinFunctionCall
+// returning an ExprError
+bool Sema::CheckHLSLBuiltinFunctionCall(unsigned BuiltinID, CallExpr *TheCall) {
+ switch (BuiltinID) {
+ case Builtin::BI__builtin_hlsl_dot: {
+ if (checkArgCount(*this, TheCall, 2)) {
+ return true;
+ }
+ Expr *Arg0 = TheCall->getArg(0);
+ QualType ArgTy0 = Arg0->getType();
+
+ Expr *Arg1 = TheCall->getArg(1);
+ QualType ArgTy1 = Arg1->getType();
+
+ auto *VecTy0 = ArgTy0->getAs<VectorType>();
+ auto *VecTy1 = ArgTy1->getAs<VectorType>();
+ SourceLocation BuiltinLoc = TheCall->getBeginLoc();
+
+ // if arg0 is bool then call Diag with err_builtin_invalid_arg_type
+ if (checkMathBuiltinElementType(*this, Arg0->getBeginLoc(), ArgTy0, 1)) {
+ return true;
+ }
+
+ // if arg1 is bool then call Diag with err_builtin_invalid_arg_type
+ if (checkMathBuiltinElementType(*this, Arg1->getBeginLoc(), ArgTy1, 2)) {
+ return true;
+ }
+
+ if (VecTy0 == nullptr && VecTy1 == nullptr) {
+ if (ArgTy0 != ArgTy1) {
+ return true;
+ } else {
+ return false;
+ }
+ }
+
+ if ((VecTy0 == nullptr && VecTy1 != nullptr) ||
+ (VecTy0 != nullptr && VecTy1 == nullptr)) {
+
+ Diag(BuiltinLoc, diag::err_vec_builtin_non_vector)
+ << TheCall->getDirectCallee()
+ << SourceRange(TheCall->getArg(0)->getBeginLoc(),
+ TheCall->getArg(1)->getEndLoc());
+ return true;
+ }
+
+ if (VecTy0->getElementType() != VecTy1->getElementType()) {
+ // Note: This case should never happen. If type promotion occurs
+ // then element types won't be different. This diag error is here
+ // b\c EmitHLSLBuiltinExpr asserts on this case.
+ Diag(BuiltinLoc, diag::err_vec_builtin_incompatible_vector)
+ << TheCall->getDirectCallee()
+ << SourceRange(TheCall->getArg(0)->getBeginLoc(),
+ TheCall->getArg(1)->getEndLoc());
+ return true;
+ }
+ if (VecTy0->getNumElements() != VecTy1->getNumElements()) {
+ Diag(BuiltinLoc, diag::err_vec_builtin_incompatible_size)
+ << TheCall->getDirectCallee()
+ << SourceRange(TheCall->getArg(0)->getBeginLoc(),
+ TheCall->getArg(1)->getEndLoc());
+ return true;
+ }
+ break;
+ }
+ }
+ return false;
+}
+
bool Sema::CheckAMDGCNBuiltinFunctionCall(unsigned BuiltinID,
CallExpr *TheCall) {
// position of memory order and scope arguments in the builtin
@@ -19583,7 +19657,7 @@ bool Sema::PrepareBuiltinElementwiseMathOneArgCall(CallExpr *TheCall) {
TheCall->setArg(0, A.get());
QualType TyA = A.get()->getType();
- if (checkMathBuiltinElementType(*this, A.get()->getBeginLoc(), TyA))
+ if (checkMathBuiltinElementType(*this, A.get()->getBeginLoc(), TyA, 1))
return true;
TheCall->setType(TyA);
@@ -19611,7 +19685,7 @@ bool Sema::SemaBuiltinElementwiseMath(CallExpr *TheCall) {
diag::err_typecheck_call_different_arg_types)
<< TyA << TyB;
- if (checkMathBuiltinElementType(*this, A.get()->getBeginLoc(), TyA))
+ if (checkMathBuiltinElementType(*this, A.get()->getBeginLoc(), TyA, 1))
return true;
TheCall->setArg(0, A.get());
diff --git a/clang/test/CodeGenHLSL/builtins/dot.hlsl b/clang/test/CodeGenHLSL/builtins/dot.hlsl
new file mode 100644
index 00000000000000..4911e684d0cbbc
--- /dev/null
+++ b/clang/test/CodeGenHLSL/builtins/dot.hlsl
@@ -0,0 +1,179 @@
+// RUN: %clang_cc1 -std=hlsl2021 -finclude-default-header -x hlsl -triple \
+// RUN: dxil-pc-shadermodel6.3-library %s -fnative-half-type \
+// RUN: -emit-llvm -disable-llvm-passes -O3 -o - | FileCheck %s
+// RUN: %clang_cc1 -std=hlsl2021 -finclude-default-header -x hlsl -triple \
+// RUN: dxil-pc-shadermodel6.3-library %s -emit-llvm -disable-llvm-passes \
+// RUN: -o - | FileCheck %s --check-prefix=NO_HALF
+
+// -fnative-half-type sets __HLSL_ENABLE_16_BIT
+#ifdef __HLSL_ENABLE_16_BIT
+// CHECK: %dx.dot = mul i16 %0, %1
+// CHECK: ret i16 %dx.dot
+int16_t test_dot_short ( int16_t p0, int16_t p1 ) {
+ return dot ( p0, p1 );
+}
+
+// CHECK: %dx.dot = call i16 @llvm.dx.dot.v2i16(<2 x i16> %0, <2 x i16> %1)
+// CHECK: ret i16 %dx.dot
+int16_t test_dot_short2 ( int16_t2 p0, int16_t2 p1 ) {
+ return dot ( p0, p1 );
+}
+
+// CHECK: %dx.dot = call i16 @llvm.dx.dot.v3i16(<3 x i16> %0, <3 x i16> %1)
+// CHECK: ret i16 %dx.dot
+int16_t test_dot_short3 ( int16_t3 p0, int16_t3 p1 ) {
+ return dot ( p0, p1 );
+}
+
+// CHECK: %dx.dot = call i16 @llvm.dx.dot.v4i16(<4 x i16> %0, <4 x i16> %1)
+// CHECK: ret i16 %dx.dot
+int16_t test_dot_short4 ( int16_t4 p0, int16_t4 p1 ) {
+ return dot ( p0, p1 );
+}
+
+// CHECK: %dx.dot = mul i16 %0, %1
+// CHECK: ret i16 %dx.dot
+uint16_t test_dot_ushort ( uint16_t p0, uint16_t p1 ) {
+ return dot ( p0, p1 );
+}
+
+// CHECK: %dx.dot = call i16 @llvm.dx.dot.v2i16(<2 x i16> %0, <2 x i16> %1)
+// CHECK: ret i16 %dx.dot
+uint16_t test_dot_ushort2 ( uint16_t2 p0, uint16_t2 p1 ) {
+ return dot ( p0, p1 );
+}
+
+// CHECK: %dx.dot = call i16 @llvm.dx.dot.v3i16(<3 x i16> %0, <3 x i16> %1)
+// CHECK: ret i16 %dx.dot
+uint16_t test_dot_ushort3 ( uint16_t3 p0, uint16_t3 p1 ) {
+ return dot ( p0, p1 );
+}
+
+// CHECK: %dx.dot = call i16 @llvm.dx.dot.v4i16(<4 x i16> %0, <4 x i16> %1)
+// CHECK: ret i16 %dx.dot
+uint16_t test_dot_ushort4 ( uint16_t4 p0, uint16_t4 p1 ) {
+ return dot ( p0, p1 );
+}
+#endif
+
+// CHECK: %dx.dot = mul i32 %0, %1
+// CHECK: ret i32 %dx.dot
+int test_dot_int ( int p0, int p1 ) {
+ return dot ( p0, p1 );
+}
+
+// CHECK: %dx.dot = call i32 @llvm.dx.dot.v2i32(<2 x i32> %0, <2 x i32> %1)
+// CHECK: ret i32 %dx.dot
+int test_dot_int2 ( int2 p0, int2 p1 ) {
+ return dot ( p0, p1 );
+}
+
+// CHECK: %dx.dot = call i32 @llvm.dx.dot.v3i32(<3 x i32> %0, <3 x i32> %1)
+// CHECK: ret i32 %dx.dot
+int test_dot_int3 ( int3 p0, int3 p1 ) {
+ return dot ( p0, p1 );
+}
+
+// CHECK: %dx.dot = call i32 @llvm.dx.dot.v4i32(<4 x i32> %0, <4 x i32> %1)
+// CHECK: ret i32 %dx.dot
+int test_dot_int4 ( int4 p0, int4 p1 ) {
+ return dot ( p0, p1 );
+}
+
+// CHECK: %dx.dot = mul i32 %0, %1
+// CHECK: ret i32 %dx.dot
+uint test_dot_uint ( uint p0, uint p1 ) {
+ return dot ( p0, p1 );
+}
+
+// CHECK: %dx.dot = call i32 @llvm.dx.dot.v2i32(<2 x i32> %0, <2 x i32> %1)
+// CHECK: ret i32 %dx.dot
+uint test_dot_uint2 ( uint2 p0, uint2 p1 ) {
+ return dot ( p0, p1 );
+}
+
+// CHECK: %dx.dot = call i32 @llvm.dx.dot.v3i32(<3 x i32> %0, <3 x i32> %1)
+// CHECK: ret i32 %dx.dot
+uint test_dot_uint3 ( uint3 p0, uint3 p1 ) {
+ return dot ( p0, p1 );
+}
+
+// CHECK: %dx.dot = call i32 @llvm.dx.dot.v4i32(<4 x i32> %0, <4 x i32> %1)
+// CHECK: ret i32 %dx.dot
+uint test_dot_uint4 ( uint4 p0, uint4 p1 ) {
+ return dot ( p0, p1 );
+}
+
+// CHECK: %dx.dot = mul i64 %0, %1
+// CHECK: ret i64 %dx.dot
+int64_t test_dot_long ( int64_t p0, int64_t p1 ) {
+ return dot ( p0, p1 );
+}
+
+// CHECK: %dx.dot = mul i64 %0, %1
+// CHECK: ret i64 %dx.dot
+uint64_t test_dot_ulong ( uint64_t p0, uint64_t p1 ) {
+ return dot ( p0, p1 );
+}
+
+// CHECK: %dx.dot = fmul half %0, %1
+// CHECK: ret half %dx.dot
+// NO_HALF: %dx.dot = fmul float %0, %1
+// NO_HALF: ret float %dx.dot
+half test_dot_half ( half p0, half p1 ) {
+ return dot ( p0, p1 );
+}
+
+// CHECK: %dx.dot = call half @llvm.dx.dot.v2f16(<2 x half> %0, <2 x half> %1)
+// CHECK: ret half %dx.dot
+// NO_HALF: %dx.dot = call float @llvm.dx.dot.v2f32(<2 x float> %0, <2 x float> %1)
+// NO_HALF: ret float %dx.dot
+half test_dot_half2 ( half2 p0, half2 p1 ) {
+ return dot ( p0, p1 );
+}
+
+// CHECK: %dx.dot = call half @llvm.dx.dot.v3f16(<3 x half> %0, <3 x half> %1)
+// CHECK: ret half %dx.dot
+// NO_HALF: %dx.dot = call float @llvm.dx.dot.v3f32(<3 x float> %0, <3 x float> %1)
+// NO_HALF: ret float %dx.dot
+half test_dot_half3 ( half3 p0, half3 p1 ) {
+ return dot ( p0, p1 );
+}
+
+// CHECK: %dx.dot = call half @llvm.dx.dot.v4f16(<4 x half> %0, <4 x half> %1)
+// CHECK: ret half %dx.dot
+// NO_HALF: %dx.dot = call float @llvm.dx.dot.v4f32(<4 x float> %0, <4 x float> %1)
+// NO_HALF: ret float %dx.dot
+half test_dot_half4 ( half4 p0, half4 p1 ) {
+ return dot ( p0, p1 );
+}
+
+// CHECK: %dx.dot = fmul float %0, %1
+// CHECK: ret float %dx.dot
+float test_dot_float ( float p0, float p1 ) {
+ return dot ( p0, p1 );
+}
+
+// CHECK: %dx.dot = call float @llvm.dx.dot.v2f32(<2 x float> %0, <2 x float> %1)
+// CHECK: ret float %dx.dot
+float test_dot_float2 ( float2 p0, float2 p1 ) {
+ return dot ( p0, p1 );
+}
+
+// CHECK: %dx.dot = call float @llvm.dx.dot.v3f32(<3 x float> %0, <3 x float> %1)
+// CHECK: ret float %dx.dot
+float test_dot_float3 ( float3 p0, float3 p1 ) {
+ return dot ( p0, p1 );
+}
+
+// CHECK: %dx.dot = call float @llvm.dx.dot.v4f32(<4 x float> %0, <4 x float> %1)
+// CHECK: ret float %dx.dot
+float test_dot_float4 ( float4 p0, float4 p1) {
+ return dot ( p0, p1 );
+}
+
+// CHECK: %dx.dot = fmul double %0, %1
+// CHECK: ret double %dx.dot
+double test_dot_double ( double p0, double p1 ) {
+ return dot ( p0, p1 );
+}
diff --git a/clang/test/SemaHLSL/BuiltIns/dot-errors.hlsl b/clang/test/SemaHLSL/BuiltIns/dot-errors.hlsl
new file mode 100644
index 00000000000000..a5acb400ab9c7b
--- /dev/null
+++ b/clang/test/SemaHLSL/BuiltIns/dot-errors.hlsl
@@ -0,0 +1,46 @@
+// RUN: %clang_cc1 -std=hlsl2021 -finclude-default-header -x hlsl -triple \
+// RUN: dxil-pc-shadermodel6.3-library %s -fnative-half-type \
+// RUN: -emit-llvm -disable-llvm-passes -verify -verify-ignore-unexpected
+// NOTE: This test is marked XFAIL because when overload resolution merges
+// NOTE: test_dot_element_type_mismatch & test_dot_scalar_mismatch will have different behavior
+// XFAIL: *
+
+float test_first_arg_is_not_vector ( float p0, float2 p1 ) {
+ return dot ( p0, p1 );
+ // expected-error at -1 {{first two arguments to 'dot' must be vectors}}
+}
+
+float test_second_arg_is_not_vector ( float2 p0, float p1 ) {
+ return dot ( p0, p1 );
+ // expected-error at -1 {{first two arguments to 'dot' must be vectors}}
+}
+
+int test_dot_unsupported_scalar_arg0 ( bool p0, int p1 ) {
+ return dot ( p0, p1 );
+ // expected-error at -1 {{1st argument must be a vector, integer or floating point type (was 'bool')}}
+}
+
+int test_dot_unsupported_scalar_arg1 ( int p0, bool p1 ) {
+ return dot ( p0, p1 );
+ // expected-error at -1 {{2nd argument must be a vector, integer or floating point type (was 'bool')}}
+}
+
+float test_dot_scalar_mismatch ( float p0, int p1 ) {
+ return dot ( p0, p1 );
+ // expected-error at -1 {{call to 'dot' is ambiguous}}
+}
+
+float test_dot_vector_size_mismatch ( float3 p0, float2 p1 ) {
+ return dot ( p0, p1 );
+ // expected-error at -1 {{first two arguments to 'dot' must have the same size}}
+}
+
+float test__no_second_arg ( float2 p0) {
+ return dot ( p0 );
+ // expected-error at -1 {{no matching function for call to 'dot'}}
+}
+
+float test_dot_element_type_mismatch ( int2 p0, float2 p1 ) {
+ return dot ( p0, p1 );
+ // expected-error at -1 {{call to 'dot' is ambiguous}}
+}
diff --git a/llvm/include/llvm/IR/IntrinsicsDirectX.td b/llvm/include/llvm/IR/IntrinsicsDirectX.td
index 2fe4fdfd5953be..c192d4b84417c9 100644
--- a/llvm/include/llvm/IR/IntrinsicsDirectX.td
+++ b/llvm/include/llvm/IR/IntrinsicsDirectX.td
@@ -19,4 +19,9 @@ def int_dx_flattened_thread_id_in_group : Intrinsic<[llvm_i32_ty], [], [IntrNoMe
def int_dx_create_handle : ClangBuiltin<"__builtin_hlsl_create_handle">,
Intrinsic<[ llvm_ptr_ty ], [llvm_i8_ty], [IntrWillReturn]>;
+
+def int_dx_dot :
+ Intrinsic<[LLVMVectorElementType<0>],
+ [llvm_anyvector_ty, LLVMScalarOrSameVectorWidth<0, LLVMVectorElementType<0>>],
+ [IntrNoMem, IntrWillReturn, Commutative] >;
}
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