[llvm] r193137 - TBAA: fix PR17620.

[Manman Ren]

Hi Rafael,

Thanks for the testing case and tips on how to get the pass combinations.
I will update the testing case.

Manman


On Mon, Oct 21, 2013 at 7:56 PM, Rafael Espíndola <
rafael.espindola at gmail.com> wrote:

> > I tried a few combinations with -gvn, but it didn't expose the issue.
> What I can do is to dump the ir right before the gvn run that exposes the
> issue.
>
> The attached testcase would crash with just "opt -tbaa -gvn". I found
> it by running opt -O2 -debug-pass=Arguments, copying the pass list an
> trimming it.
>
> Cheers,
> Rafael
>
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