[PATCH] [MachineSink] Use the real post dominator tree

[Owen Anderson]

I definitely think we need to see compile time measurements here.  LLVM has historically avoided using algorithms based on post-dominance to avoid incurring the cost of computing it.

—Owen

On Aug 7, 2014, at 9:15 AM, Jingyue Wu <jingyue at google.com> wrote:

> Jiangning, thanks a lot for running the experiments! I should do that later as well. With that, do you think this patch is good to go? 
> 
> Just a clarification question: are these numbers compilation times or runtime performance numbers?
> 
> http://reviews.llvm.org/D4814
> 
> 
> 
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