[PATCH] During PHI elimination, split critical edges that move copies out of loops

[Quentin Colombet]

Hi Daniel,

> This is still work in progress as it currently breaks a few tests. Mainly, it seems to influence which copies are local and which are non-local, which influences the order in which the RegisterCoalescer visits copies. Coalescing the wrong registers first has unwanted side-effects.


What does this mean for the livability of this patch?

Thanks,
-Quentin


http://reviews.llvm.org/D8016

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