[clang] [llvm] [HLSL] AST support for WaveSize attribute. (PR #101240)

[Chris B via cfe-commits]

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@@ -357,6 +398,74 @@ void SemaHLSL::handleNumThreadsAttr(Decl *D, const ParsedAttr &AL) {
     D->addAttr(NewAttr);
 }
 
+static bool isValidWaveSizeValue(unsigned Value) {
+  return (Value >= 4 && Value <= 128 && ((Value & (Value - 1)) == 0));
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llvm-beanz wrote:

Can we instead use `llvm::isPowerOf2_32`? That is clearer to read.

https://github.com/llvm/llvm-project/pull/101240