================
@@ -1054,6 +1055,68 @@ Value *CodeGenFunction::EmitHLSLBuiltinExpr(unsigned
BuiltinID,
Value *Mul = Builder.CreateNUWMul(M, A);
return Builder.CreateNUWAdd(Mul, B);
}
+ case Builtin::BI__builtin_hlsl_mul: {
+ Value *Op0 = EmitScalarExpr(E->getArg(0));
+ Value *Op1 = EmitScalarExpr(E->getArg(1));
+ QualType QTy0 = E->getArg(0)->getType();
+ QualType QTy1 = E->getArg(1)->getType();
+
+ bool IsVec0 = QTy0->isVectorType();
+ bool IsVec1 = QTy1->isVectorType();
+ bool IsMat0 = QTy0->isConstantMatrixType();
+ bool IsMat1 = QTy1->isConstantMatrixType();
+
+ if (IsVec0 && IsVec1) {
+ // Case 5: vector * vector -> scalar (dot product)
----------------
Icohedron wrote:
Implemented in HLSL headers in `hlsl_intrinsics.h` instead of codegen for the
built-in. This is a change requested by @farzonl to simplify the codegen logic
for the built-in by reducing the number of cases it has to handle.
https://github.com/llvm/llvm-project/pull/184882
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