[PATCH] D113471: [PowerPC] guard update form prepare with non-const increment with option

[ChenZheng via Phabricator via llvm-commits]

shchenz created this revision.
shchenz added reviewers: jsji, PowerPC.
Herald added subscribers: kbarton, hiraditya, nemanjai.
shchenz requested review of this revision.
Herald added a project: LLVM.
Herald added a subscriber: llvm-commits.

Add an option `-ppc-formprep-update-nonconst-inc` for update form preparation with non-const increment and set the default value to false.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D113471

Files:
  llvm/lib/Target/PowerPC/PPCLoopInstrFormPrep.cpp
  llvm/test/CodeGen/PowerPC/common-chain.ll
  llvm/test/CodeGen/PowerPC/loop-instr-prep-non-const-increasement.ll
  llvm/test/CodeGen/PowerPC/lsr-profitable-chain.ll

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