[PATCH] D44897: [PowerPC] Do not emit record-form rotates when record-form andi/andis suffices

[Nemanja Ivanovic via Phabricator via llvm-commits]

nemanjai created this revision.
nemanjai added reviewers: hfinkel, echristo, Carrot.
Herald added a subscriber: kbarton.

This is a follow-up to the previous patch that eliminated some of the rotates. With this addition, we will also emit the record-form andis.
This patch increases the number of record-form rotates we emit by more than 70%.


Repository:
  rL LLVM

https://reviews.llvm.org/D44897

Files:
  lib/Target/PowerPC/PPCInstrInfo.cpp
  test/CodeGen/PowerPC/noPermuteFormasking.ll
  test/CodeGen/PowerPC/tail-dup-break-cfg.ll
  test/CodeGen/PowerPC/tail-dup-layout.ll

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