================
@@ -19105,6 +19105,51 @@ Value *CodeGenFunction::EmitHLSLBuiltinExpr(unsigned
BuiltinID,
return nullptr;
switch (BuiltinID) {
+ case Builtin::BI__builtin_hlsl_adduint64: {
----------------
farzonl wrote:
So while HLSL does not support pointers we do have a concept of out args. if
you search for `EmitHLSLOutArgExpr` I think you can find some uses. My thinking
is maybe we could do our own builtin like you have done but without the pointer
and have an anonymous struct returned. then we could still piggy back off of
the code genen for __builtin_addc even if we don't use the builtin itself.
Maybe thats more complicated than it has to be, but it could be a way to keep
the codegen for the `uadd_with_overflow` intrinsic in one place.
https://github.com/llvm/llvm-project/pull/125319
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