[PATCH] D135847: [PowerPC] don't check CTR clobber in hardware loop insertion pass

[ChenZheng via Phabricator via llvm-commits]

shchenz created this revision.
shchenz added reviewers: PowerPC, nemanjai, lkail.
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We added a new post-isel CTRLoop pass in D122125 <https://reviews.llvm.org/D122125>. That pass will expand the hardware loop related intrinsic to CTR loop or normal loop based on the loop context.

So we don't need to conservatively check the CTR clobber now on the IR level.

As expected, now, more CTR loops are generated.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D135847

Files:
  llvm/lib/Target/PowerPC/PPCTargetTransformInfo.cpp
  llvm/test/CodeGen/PowerPC/branch-opt.ll
  llvm/test/CodeGen/PowerPC/ctrloop-constrained-fp.ll
  llvm/test/CodeGen/PowerPC/ctrloop-fp128.ll
  llvm/test/CodeGen/PowerPC/ctrloop-sh.ll
  llvm/test/CodeGen/PowerPC/disable-ctr-ppcf128.ll
  llvm/test/CodeGen/PowerPC/hardware-loops-crash.ll
  llvm/test/CodeGen/PowerPC/ppc-shrink-wrapping.ll
  llvm/test/CodeGen/PowerPC/pr36292.ll
  llvm/test/CodeGen/PowerPC/pr43527.ll
  llvm/test/CodeGen/PowerPC/pr48519.ll
  llvm/test/CodeGen/PowerPC/pr55463.ll
  llvm/test/CodeGen/PowerPC/spe.ll
  llvm/test/CodeGen/PowerPC/tocSaveInPrologue.ll

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