[PATCH] D71170: [PowerPC] Cleanup xxpermdi peephole optimization

[Colin Samples via Phabricator via llvm-commits]

vddvss created this revision.
vddvss added reviewers: hfinkel, nemanjai, jsji, lkail, PowerPC.
vddvss added a project: LLVM.
Herald added subscribers: llvm-commits, shchenz, kbarton, hiraditya.

Following on from rG884351547da2 <https://reviews.llvm.org/rG884351547da27e76e14bef5fe20c3e3cb0e89acd>, this patch cleans up the logic for `xxpermdi`
peephole optimizations by converting two layers of nested `if`s to early breaks
and simplifying the logic.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D71170

Files:
  llvm/lib/Target/PowerPC/PPCMIPeephole.cpp

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