[PATCH] D157690: [GlobalISel] Rewrite some simple rules using MIR Patterns

[Pierre van Houtryve via Phabricator via llvm-commits]

Pierre-vh created this revision.
Pierre-vh added reviewers: arsenm, aemerson, foad.
Herald added subscribers: StephenFan, hiraditya.
Herald added a project: All.
Pierre-vh requested review of this revision.
Herald added subscribers: llvm-commits, wdng.
Herald added a project: LLVM.

Rewrites some simple rules that cause little to no codegen regressions as MIR patterns.

I may have missed some easy cases, but some other rules have intentionally been left as-is because bigger
changes are needed to make them work.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D157690

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/combine-select.mir
  llvm/test/CodeGen/AArch64/GlobalISel/postlegalizercombiner-select.mir
  llvm/test/CodeGen/AArch64/GlobalISel/prelegalizercombiner-not-really-equiv-insts.mir
  llvm/test/CodeGen/AArch64/GlobalISel/prelegalizercombiner-trivial-arith.mir
  llvm/utils/TableGen/GlobalISelCombinerMatchTableEmitter.cpp

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