Re: [RFA:] fix PR55030, wrong code from __builtin_setjmp_receiver

[Uros Bizjak <ubizjak@gmail.com>]

On Tue, Nov 27, 2012 at 8:29 PM, Uros Bizjak <ubizjak@gmail.com> wrote:

>> As long as volatile asms and UNSPEC_VOLATILE insns (aka.
>> barriers) are handled the same way and consistently throughout
>> gcc, I'm fine.  It seems your patch does that, so thanks!
>>
>> > But the question is also what effects your patch can have e.g. on RTL DSE.
>>
>> Looks like the patch caused a bootstrap for s390x.
>>
>> Eagerly awaiting a PR for that, but whoever is interested
>> on that, please try Jakub's patch first...
>>
>> > 2012-11-26  Jakub Jelinek  <jakub@redhat.com>
>> >
>> >     PR debug/36728
>> >     PR debug/55467
>> >     * cselib.c (cselib_process_insn): If cselib_preserve_constants,
>> >     don't reset table and exit early on volatile insns and setjmp.
>> >     Reset table afterwards on setjmp.
>> >
>> >     * gcc.dg/guality/pr36728-1.c: Include "../nop.h", make sure the asm
>> >     are non-empty and add dependency between the first and second asm.
>> >     * gcc.dg/guality/pr36728-2.c: Likewise.
>> >     * gcc.dg/guality/pr36728-3.c: New test.
>> >     * gcc.dg/guality/pr36728-4.c: New test.
>
> I have hit the same ICE on alpha-linux-gnu bootstrap. Jakub's patch
> fixes the ICE, and allows bootstrap to pass well into stage2 now.
> However, it takes ~10 hours for full bootstrap+regtest to finish, will
> report back tomorrow morning (CET).

The results look OK [1]. Please note that I didn't patch the testsuite.

[1] http://gcc.gnu.org/ml/gcc-testresults/2012-11/msg02335.html

Uros.