[PATCH] D90223: [AMDGPU][GlobalISel] Combine shift + logic + shift with constant operands

[Mirko Brkusanin via Phabricator via llvm-commits]

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This sequence of instructions can be simplified if they are single use and 
some operands are constants. Additional combines may be applied afterwards.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D90223

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/combine-shift-of-shifted-logic.ll

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