[llvm] r253126 - Don't recompute LCSSA after loop-unrolling when possible.

[Mikhail Zolotukhin via llvm-commits]

I committed a fix in r253253. It went without a testcase for now, but I'll try to follow-up with one.

Michael

> On Nov 16, 2015, at 11:21 AM, Mikhail Zolotukhin <mzolotukhin at apple.com> wrote:
> 
> Hi Joerg,
> 
> This also caused PR25538, I'm looking into it right now.
> 
> Thanks,
> Michael
> 
>> On Nov 16, 2015, at 9:43 AM, Joerg Sonnenberger via llvm-commits <llvm-commits at lists.llvm.org> wrote:
>> 
>> On Sat, Nov 14, 2015 at 05:51:42AM -0000, Michael Zolotukhin via llvm-commits wrote:
>>> Author: mzolotukhin
>>> Date: Fri Nov 13 23:51:41 2015
>>> New Revision: 253126
>>> 
>>> URL: http://llvm.org/viewvc/llvm-project?rev=253126&view=rev
>>> Log:
>>> Don't recompute LCSSA after loop-unrolling when possible.
>> 
>> Breaks on the attached source code.
>> 
>> Joerg
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