[PATCH] D111434: [PowerPC] PPC backend optimization on conditional trap intrustions

[Victor Huang via Phabricator via llvm-commits]

NeHuang created this revision.
NeHuang added reviewers: nemanjai, stefanp, PowerPC.
NeHuang added projects: LLVM, PowerPC.
Herald added subscribers: shchenz, JDevlieghere, kbarton, hiraditya.
NeHuang requested review of this revision.

This patch adds PPC back end optimization to analyze the arguments of a conditional trap instruction to execute one of the following

- Delete it if the condition is never true
- Replace it with an unconditional trap if the condition is always true
- Otherwise keep it


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D111434

Files:
  llvm/lib/Target/PowerPC/PPCMIPeephole.cpp
  llvm/test/CodeGen/PowerPC/mi-peepholes-trap-opt.mir

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