Anshil Gandhi 2e5dc4a1ef [AMDGPU] [CodeGen] Fold negate llvm.amdgcn.class into test mask ...

Implemented the transformation of xor (llvm.amdgcn.class x, mask), -1 into
llvm.amdgcn.class(x, ~mask). Added LIT tests as well.

Differential Revision: https://reviews.llvm.org/D104049

2021-06-18 13:04:12 -06:00

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