[clang] [AMDGPU] Allow w64 ballot to be used on w32 targets (PR #80183)

[Matt Arsenault via cfe-commits]

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@@ -151,7 +151,7 @@ BUILTIN(__builtin_amdgcn_mqsad_u32_u8, "V4UiWUiUiV4Ui", "nc")
 //===----------------------------------------------------------------------===//
 
 TARGET_BUILTIN(__builtin_amdgcn_ballot_w32, "ZUib", "nc", "wavefrontsize32")
-TARGET_BUILTIN(__builtin_amdgcn_ballot_w64, "WUib", "nc", "wavefrontsize64")
+BUILTIN(__builtin_amdgcn_ballot_w64, "WUib", "nc")
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arsenm wrote:

The target attribute is just a giant footgun for AMDGPU. This one only works in the library with special handholding by the compiler 

https://github.com/llvm/llvm-project/pull/80183