[PATCH] D13378: [SCEV] Recognize simple br-phi patterns

[Diego Novillo via llvm-commits]

On Tue, Oct 6, 2015 at 1:48 PM, Sanjoy Das <sanjoy at playingwithpointers.com>
wrote:

>
>
> Diego Novillo via llvm-commits wrote:
>
>> dnovillo added a subscriber: dnovillo.
>> dnovillo added a comment.
>>
>> Sanjoy,
>>
>> This commit is causing an internal compiler error with the following code:
>>
>> int x0, x1, x2;
>> double *x3;
>> int fsolv() {
>>
>>    int x4, x5 = x4 = 0;
>>    for (; x4<  x2; ++x4) {
>>      x0 = 0;
>>      for (; x0<  x4; ++x0)
>>        x1 = x3[x5++];
>>    }
>>    return 0;
>>
>> }
>>
>> Is this something you recognize?  If not, do you mind if I revert your
>> commit while you work on the test case?
>>
>
> It is plausible that this is the same issue as in
> http://reviews.llvm.org/D13460.  If it is possible, can you please try
> D13460 and see if it fixes the ICE?  If not or if trying out a new patch
> will be too much work, reverting this is okay.
>

I'm now testing r249431 which supposedly fixes this ICE.  I'll know in a
few minutes.

Thanks. Diego.
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