================
@@ -17959,6 +17964,54 @@ 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");
+ }
+ // Bools should have been promoted
+ assert(
+ false &&
+ "Dot product on a scalar is only supported on integers and floats.");
----------------
llvm-beanz wrote:
Generally `assert(false)` should be unreachable.
```suggestion
llvm_unreachable("Scalar dot product is only supported on ints and
floats.");
```
https://github.com/llvm/llvm-project/pull/81190
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