[PATCH] D140367: [PowerPC] remove the ctr clobbers related to TLS access

[ChenZheng via Phabricator via llvm-commits]

shchenz created this revision.
shchenz added reviewers: nemanjai, PowerPC, lkail.
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Dynamic tls access model will be lowered to MI which clobbers CTR in 
the loop in ISEL(`ADDItlsgdLADDR`) and post-isel CTR loop pass will revert
the loop to a normal compare + branch form.

So no need to exclude this clobber in hardware loop insertion pass now.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D140367

Files:
  llvm/lib/Target/PowerPC/PPCTargetTransformInfo.cpp
  llvm/test/CodeGen/PowerPC/pr48527.ll

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