[PATCH] D108823: [PowerPC] Mark splat immediate instructions as rematerializable

[Victor Huang via Phabricator via llvm-commits]

NeHuang created this revision.
NeHuang added reviewers: nemanjai, stefanp, lei, PowerPC.
NeHuang added a project: LLVM.
Herald added subscribers: shchenz, kbarton, hiraditya, qcolombet.
NeHuang requested review of this revision.

This patch marks splat immediate instructions `XXSPLTIDP` and `XXSPLTI32DX` as rematerializable to prevent MachineLICM from moving them out of loops.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D108823

Files:
  llvm/lib/Target/PowerPC/PPCInstrInfo.cpp
  llvm/lib/Target/PowerPC/PPCInstrPrefix.td
  llvm/test/CodeGen/PowerPC/constant-pool.ll
  llvm/test/CodeGen/PowerPC/p10-spill-crun.ll
  llvm/test/CodeGen/PowerPC/p10-splatImm.ll

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