[PATCH] D90217: [AMDGPU][GlobalISel] Fold a chain of two shift instructions with constant operands

[Mirko Brkusanin via Phabricator via llvm-commits]

mbrkusanin updated this revision to Diff 303457.
mbrkusanin added a comment.

- Avoid combine for G_USHLSAT when sum exceeds scalar size.


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D90217/new/

https://reviews.llvm.org/D90217

Files:
  llvm/include/llvm/CodeGen/GlobalISel/CombinerHelper.h
  llvm/include/llvm/Target/GlobalISel/Combine.td
  llvm/lib/CodeGen/GlobalISel/CombinerHelper.cpp
  llvm/test/CodeGen/AMDGPU/GlobalISel/ashr.ll
  llvm/test/CodeGen/AMDGPU/GlobalISel/combine-shift-imm-chain-illegal-types.mir
  llvm/test/CodeGen/AMDGPU/GlobalISel/combine-shift-imm-chain-shlsat.mir
  llvm/test/CodeGen/AMDGPU/GlobalISel/combine-shift-imm-chain.ll

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