On Thu, 6 Aug 2015, Thomas Preud'homme wrote:
> Hi,
>
> > From: gcc-patches-ow...@gcc.gnu.org [mailto:gcc-patches-
> > ow...@gcc.gnu.org] On Behalf Of Thomas Preud'homme
> > Sent: Tuesday, July 28, 2015 3:04 PM
> >
> > > From: gcc-patches-ow...@gcc.gnu.org [mailto:gcc-patches-
> > > ow...@gcc.gn
Hi,
> From: gcc-patches-ow...@gcc.gnu.org [mailto:gcc-patches-
> ow...@gcc.gnu.org] On Behalf Of Thomas Preud'homme
> Sent: Tuesday, July 28, 2015 3:04 PM
>
> > From: gcc-patches-ow...@gcc.gnu.org [mailto:gcc-patches-
> > ow...@gcc.gnu.org] On Behalf Of Thomas Preud'homme
> >
> > ChangeLog entry
> From: gcc-patches-ow...@gcc.gnu.org [mailto:gcc-patches-
> ow...@gcc.gnu.org] On Behalf Of Thomas Preud'homme
>
> ChangeLog entry is as follows:
>
> 2015-07-28 Thomas Preud'homme
>
> PR tree-optimization/66828
> * tree-ssa-math-opts.c (perform_symbolic_merge): Change type of
The bswap pass contain the following loop:
for (i = 0; i < size; i++, inc <<= BITS_PER_MARKER)
In the update to inc and i just before exiting the loop, inc can be shifted by
a total of more than 62bit, making the value too large to be represented by
int64_t. This is an undefined behavior [1] an
