[PATCH] D64354: [AArch64][GlobalISel] Optimize conditional branches followed by unconditional branches

[Amara Emerson via Phabricator via llvm-commits]

aemerson updated this revision to Diff 208507.
aemerson edited the summary of this revision.
aemerson added a comment.

New patch to do the optimization in the CombinerHelper and add it to the prelegalizer combiner for AArch64.

This doesn't get all the code size improvements of the last patch, I'll make that a separate patch. On it's own, this change gives a 2.5% geomean improvement on CTMark -O0.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D64354/new/

https://reviews.llvm.org/D64354

Files:
  llvm/include/llvm/CodeGen/GlobalISel/CombinerHelper.h
  llvm/include/llvm/CodeGen/MachineOperand.h
  llvm/lib/CodeGen/GlobalISel/CombinerHelper.cpp
  llvm/lib/Target/AArch64/AArch64PreLegalizerCombiner.cpp
  llvm/test/CodeGen/AArch64/GlobalISel/localizer-arm64-tti.ll
  llvm/test/CodeGen/AArch64/speculation-hardening.ll

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