[llvm] r236684 - [JumpThreading] Simplify comparisons when simplifying branches

[Diego Novillo]

On Thu, May 7, 2015 at 3:33 PM, Philip Reames <listmail at philipreames.com> wrote:

> This particular optimization isn't changing the CFG.  You might have a
> branch on a constant after this has run, but the CFG is still the same.  As
> such, the dom tree should remain valid.

Sure.  The folding needs to be done separately.  I was curious at
whether this pass would leave the inner sub-trees setup for folding in
the cleanup pass after this pass is done.


Thanks.  Diego.