[PATCH] D38212: [PowerPC] Add profitablilty check for conversion to mtctr loops

[Lei Huang via Phabricator via llvm-commits]

lei updated this revision to Diff 117022.
lei added a comment.

Use CodeMetrics to ensure we are only doing this for small loops with small trip counts.


https://reviews.llvm.org/D38212

Files:
  lib/Target/PowerPC/PPCCTRLoops.cpp
  test/CodeGen/PowerPC/ctr-minmaxnum.ll
  test/CodeGen/PowerPC/ctrloop-shortLoops.ll

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