[Bug tree-optimization/32461] [4.3 Regression] Segmentation fault in build_classic_dist_vector_1() at tree-data-ref.c:2700

[sebpop at gmail dot com]

------- Comment #28 from sebpop at gmail dot com  2007-06-24 19:19 -------
Subject: Re:  [4.3 Regression] Segmentation fault in
build_classic_dist_vector_1() at tree-data-ref.c:2700

On 6/24/07, Sebastian Pop <sebpop@gmail.com> wrote:
> On 6/24/07, Richard Guenther <richard.guenther@gmail.com> wrote:
> >  An alternative is to use
> >
> >           if (TREE_CODE (arg1) == BIT_NOT_EXPR
> >               && !TYPE_OVERFLOW_TRAPS (type))
> >              {
> >                 tem = TREE_OPERAND (arg1, 0);
> >                 STRIP_NOPS (tem);
> >                 if (operand_equal_p (arg0, tem, 0))
> >  ...
> >
> > which would be even better and shouldn't cause other missed
> > optimizations.
> >
>
> Okay, attached is the patch that implements this.
> I'm bootstrapping and testing it on i686-linux.
>

Passed bootstrap with --enable-checking=yes,fold,rtl
and no new regressions in the testsuite.  Okay for trunk?

> Sebastian
>
>


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32461