[llvm] r179316 - Optimize icmp involving addition better

[David Majnemer]

No, they are unrelated. I fixed it by reverting a commit, I have an appropriate fix to commit later today.

Sent from my iPhone

On Apr 18, 2013, at 3:02 AM, Renato Golin <renato.golin at linaro.org> wrote:

> On 18 April 2013 08:49, Renato Golin <renato.golin at linaro.org> wrote:
>> This is exactly what it is. I found that A8 and A9 IR for rdopt.c (where the segfault is) is identical, but A8 assembly works and A9 doesn't, so it's not just your patch. I'm reducing the problem (which is not simple) and will try to find the cause.
> 
> For no apparent reason, the test-suite started passing again...
> 
> http://lab.llvm.org:8011/builders/clang-native-arm-lnt/builds/617
> 
> Though, they're now breaking for other reasons...
> 
> http://lab.llvm.org:8011/builders/clang-native-arm-lnt/builds/623
> 
> And it seems it's your patch again... :)
> 
> I'm assuming it's the same issue, the ARM back-end being flimsy with generic front-end changes, which is not good (nor your fault).
> 
> And here I go, investigating phantom bugs again... sigh...
> 
> cheers,
> --renato
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