Re: Tracking the source of an ARM miscompilation with gcc 4.6

[Mike Hommey <mh-gcc at glandium dot org>]

On Thu, Mar 07, 2013 at 01:14:03AM -0800, Andrew Pinski wrote:
> On Thu, Mar 7, 2013 at 12:33 AM, Mike Hommey <mh-gcc@glandium.org> wrote:
> > On Thu, Mar 07, 2013 at 12:28:22AM -0800, Andrew Pinski wrote:
> >> On Thu, Mar 7, 2013 at 12:24 AM, Mike Hommey <mh-gcc@glandium.org> wrote:
> >> > Hi,
> >> >
> >> > At Mozilla, we've encountered a GCC 4.6 miscompilation in the ARMv6
> >> > build of Firefox for Android. We'd like to evaluate whether this bug is
> >> > hitting us in more places than the one we spotted. To that end, we'd
> >> > need to know what particular bug in GCC leads to this miscompilation.
> >> >
> >> > The attached file is the preprocessed source, slightly simplified. I was
> >> > able to reproduce the miscompilation with both the GCC 4.6 from the
> >> > Android NDK r8d and 4.6.3 from Debian unstable. It apparently happens
> >> > for any -march, with -marm, but not -mthumb. It happens at -Os but not
> >> > -O2.
> >>
> >> No attached file.
> >
> > Sent it afterwards.
> 
> Still not on the list.  I bet it was too big so it was rejected by the
> list.  Try filing a bug report instead.

Let's try it gzipped. If it still doesn't work, I'll file a bug.

Mike

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