[PATCH] D89084: [PowerPC] Combine select_cc (x, 0, t, f, lt) to avoid generating `isel`

[Kai Luo via Phabricator via llvm-commits]

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

We can combine `select_cc (x, 0, t, f, lt)` to avoid generating expensive `isel` instruction.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D89084

Files:
  llvm/lib/Target/PowerPC/PPCISelLowering.cpp
  llvm/lib/Target/PowerPC/PPCISelLowering.h
  llvm/test/CodeGen/PowerPC/select.ll

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