[PATCH] D89536: [AMDGPU] Do not generate S_CMP_LG_U64 on gfx7

[Piotr Sobczak via Phabricator via llvm-commits]

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S_CMP_LG_U64 was added in gfx8 and is guarded by hasScalarCompareEq64().

Rewrite S_CMP_LG_U64 to S_OR_B32 + S_CMP_LG_U32 for targets that
do not support 64-bit scalar compare.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D89536

Files:
  llvm/lib/Target/AMDGPU/SIISelLowering.cpp
  llvm/test/CodeGen/AMDGPU/expand-scalar-carry-out-select-user.ll

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