[PATCH] D107330: [GlobalISel] Combine shr(shl x, c1), c2 to G_SBFX/G_UBFX

[Dominik Montada via Phabricator via llvm-commits]

gargaroff created this revision.
gargaroff added reviewers: paquette, aemerson, arsenm.
Herald added subscribers: kerbowa, hiraditya, rovka, nhaehnle, jvesely.
gargaroff requested review of this revision.
Herald added subscribers: llvm-commits, wdng.
Herald added a project: LLVM.

Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D107330

Files:
  llvm/include/llvm/CodeGen/GlobalISel/CombinerHelper.h
  llvm/include/llvm/Target/GlobalISel/Combine.td
  llvm/lib/CodeGen/GlobalISel/CombinerHelper.cpp
  llvm/test/CodeGen/AArch64/GlobalISel/form-bitfield-extract-from-shr.mir
  llvm/test/CodeGen/AArch64/arm64-rev.ll
  llvm/test/CodeGen/AMDGPU/GlobalISel/llvm.amdgcn.ubfe.ll

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