[PATCH] D11662: Filter cold blocks off the loop chain when profile data is available.

[Cong Hou]

congh updated this revision to Diff 31177.
congh added a comment.

Update the patch by making the loop-to-cold-block-ratio an option.


http://reviews.llvm.org/D11662

Files:
  lib/CodeGen/MachineBlockPlacement.cpp
  test/CodeGen/X86/code_placement_cold_loop_blocks.ll

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