[PATCH] D63972: [CodeGen] Do the Simple Early Return in block-placement pass to optimize the blocks

[Zhang Kang via Phabricator via llvm-commits]

ZhangKang updated this revision to Diff 213190.
ZhangKang added a comment.

Add the comment about post-dominator tree.


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D63972/new/

https://reviews.llvm.org/D63972

Files:
  llvm/lib/CodeGen/MachineBlockPlacement.cpp
  llvm/test/CodeGen/PowerPC/block-placement-1.mir
  llvm/test/CodeGen/PowerPC/block-placement.mir

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