[PATCH] D22521: [MBP] do not reorder and move up loop latch block

[Sjoerd Meijer via llvm-commits]

SjoerdMeijer created this revision.
SjoerdMeijer added reviewers: chandlerc, davidxl, jmolloy.
SjoerdMeijer added a subscriber: llvm-commits.

Do not reorder and move up a loop latch block when optimising for size because this will generate an extra unconditional branch. Also some more cleaning up of comments.


https://reviews.llvm.org/D22521

Files:
  lib/CodeGen/MachineBlockPlacement.cpp
  test/CodeGen/X86/loop-blocks.ll

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