[clang] [llvm] [HLSL] Add WaveActiveBitOr HLSL function (PR #178056)

[Tex Riddell via cfe-commits]

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@@ -3597,6 +3597,31 @@ bool SemaHLSL::CheckBuiltinFunctionCall(unsigned BuiltinID, CallExpr *TheCall) {
     TheCall->setType(ArgTyExpr);
     break;
   }
+  case Builtin::BI__builtin_hlsl_wave_active_bit_or: {
+    if (SemaRef.checkArgCount(TheCall, 1))
+      return true;
+
+    // Ensure input expr type is a scalar/vector and then
+    // set the return type to the arg type
+    QualType ArgType = TheCall->getArg(0)->getType();
+
+    if (!(ArgType->isScalarType())) {
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tex3d wrote:

In this case, the comment above is correct - we should support scalar or vector, but this code requires scalar.

https://github.com/llvm/llvm-project/pull/178056