================
@@ -18695,6 +18695,48 @@ case Builtin::BI__builtin_hlsl_elementwise_isinf: {
CGM.getHLSLRuntime().getSaturateIntrinsic(), ArrayRef<Value *>{Op0},
nullptr, "hlsl.saturate");
}
+ case Builtin::BI__builtin_hlsl_select: {
+ Value *OpCond = EmitScalarExpr(E->getArg(0));
+ Value *OpTrue = EmitScalarExpr(E->getArg(1));
+ Value *OpFalse = EmitScalarExpr(E->getArg(2));
+ llvm::Type *TCond = OpCond->getType();
+
+ // if cond is a bool emit a select instruction
+ if (TCond->isIntegerTy(1))
----------------
farzonl wrote:
NIT: Stylistically in `EmitHLSLBuiltinExpr` we have been checking error cases
upfront and ending the case statements with a return. If it isn't a ton of
trouble change this to
```cpp
if (!TCond->isIntegerTy(1))
llvm_unreachable("Select requires a bool or vector of bools as its first
operand.");
...
return Result;
```
https://github.com/llvm/llvm-project/pull/107129
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