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

[Philip Reames]

On 05/08/2015 07:41 AM, Diego Novillo wrote:
> 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.
Er, I have no idea what you're trying to ask.  I think this might be a 
question about JumpThreading as a whole rather than my patch, but not 
really sure.  Can you rephrase your question, possibly with an example?
>
>
> Thanks.  Diego.