Matt Arsenault f4bcd7f598 AMDGPU/clang: Add builtins for llvm.amdgcn.ballot ...

Use explicit _w32/_w64 suffixes for the wave size to be consistent
with the existing other wave dependent intrinsics. Also start
diagnosing trying to use both wave32 and wave64.

I would have preferred to avoid the +wavefrontsize64 spam on targets
where that's the only option, but avoiding this seems to be more work
than I expected.

2022-12-29 17:58:55 -05:00

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