[PATCH] D150230: [GlobalISel] Implement some binary reassociations, G_ADD for now

[Amara Emerson via Phabricator via llvm-commits]

aemerson created this revision.
aemerson added reviewers: arsenm, paquette, foad, Pierre-vh.
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  - (op (op X, C1), C2) -> (op X, (op C1, C2))
  - (op (op X, C1), Y) -> (op (op X, Y), C1)

Some code duplication with the G_PTR_ADD reassociations unfortunately but no
easy way to avoid it that I can see.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D150230

Files:
  llvm/include/llvm/CodeGen/GlobalISel/CombinerHelper.h
  llvm/include/llvm/CodeGen/TargetLowering.h
  llvm/include/llvm/Target/GlobalISel/Combine.td
  llvm/lib/CodeGen/GlobalISel/CombinerHelper.cpp
  llvm/test/CodeGen/AArch64/GlobalISel/prelegalizer-combiner-binop-reassoc.mir
  llvm/test/CodeGen/AMDGPU/GlobalISel/llvm.amdgcn.s.buffer.load.ll

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