Kyle Butt b15c06677c CodeGen: Allow small copyable blocks to "break" the CFG. ...

When choosing the best successor for a block, ordinarily we would have preferred
a block that preserves the CFG unless there is a strong probability the other
direction. For small blocks that can be duplicated we now skip that requirement
as well, subject to some simple frequency calculations.

Differential Revision: https://reviews.llvm.org/D28583

llvm-svn: 293716

2017-01-31 23:48:32 +00:00

1.1 KiB

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