[Bug regression/55486] New: FAIL: gcc.dg/sms-7.c (internal compiler error)

[Bug regression/55486] New: FAIL: gcc.dg/sms-7.c (internal compiler error)

[kyrylo.tkachov at arm dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55486

             Bug #: 55486
           Summary: FAIL: gcc.dg/sms-7.c (internal compiler error)
    Classification: Unclassified
           Product: gcc
           Version: 4.8.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: regression
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: kyrylo.tkachov@arm.com
                CC: dnovillo@google.com
            Target: arm-none-eabi


FAIL: gcc.dg/sms-7.c (internal compiler error)
FAIL: gcc.dg/sms-7.c (test for excess errors)

Target: arm-none-eabi

gcc.dg/sms-7.c:17:1: internal compiler error: in schedule_reg_moves, at
modulo-sched.c:725

Bisection shows regression appears with revision 193595


arm-none-eabi/obj/gcc2/gcc/xgcc -Barm-none-eabi/obj/gcc2/gcc/
src/gcc/gcc/testsuite/gcc.dg/sms-7.c gcc_tg.o -fno-diagnostics-show-caret -O3
-fmodulo-sched -fstrict-aliasing -fdump-rtl-sms -fmodulo-sched-allow-regmoves
--param sms-min-sc=1 -specs=rdimon.specs -Wa,-mno-warn-deprecated 
-Wl,-wrap,exit -Wl,-wrap,_exit -Wl,-wrap,main -Wl,-wrap,abort -lm   -o
./sms-7.exe

Thanks,
Kyrill

[Bug regression/55486] FAIL: gcc.dg/sms-7.c (internal compiler error)

[dnovillo at google dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55486

--- Comment #1 from dnovillo at google dot com <dnovillo at google dot com> 2012-11-30 15:14:10 UTC ---
On Tue, Nov 27, 2012 at 6:25 AM, kyrylo.tkachov at arm dot com
<gcc-bugzilla@gcc.gnu.org> wrote:
>
> http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55486
>
>              Bug #: 55486
>            Summary: FAIL: gcc.dg/sms-7.c (internal compiler error)
>     Classification: Unclassified
>            Product: gcc
>            Version: 4.8.0
>             Status: UNCONFIRMED
>           Severity: normal
>           Priority: P3
>          Component: regression
>         AssignedTo: unassigned@gcc.gnu.org
>         ReportedBy: kyrylo.tkachov@arm.com
>                 CC: dnovillo@google.com
>             Target: arm-none-eabi
>
>
> FAIL: gcc.dg/sms-7.c (internal compiler error)
> FAIL: gcc.dg/sms-7.c (test for excess errors)
>
> Target: arm-none-eabi
>
> gcc.dg/sms-7.c:17:1: internal compiler error: in schedule_reg_moves, at
> modulo-sched.c:725

Can you show me the backtrace dump?


Thanks.  Diego.

[Bug regression/55486] FAIL: gcc.dg/sms-7.c (internal compiler error)

[kyrylo.tkachov at arm dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55486

--- Comment #2 from Kyrill Tkachov <kyrylo.tkachov at arm dot com> 2012-11-30 15:38:33 UTC ---
(In reply to comment #1)
> > Target: arm-none-eabi
> >
> > gcc.dg/sms-7.c:17:1: internal compiler error: in schedule_reg_moves, at
> > modulo-sched.c:725
> 
> Can you show me the backtrace dump?
> 
> 
> Thanks.  Diego.

Hi Diego,

As of today, the ICE has gone. The compilation test passes.
But the execution test fails on qemu:
FAIL: gcc.dg/sms-7.c execution test

Should this be a separate issue then?
Is there any other data I can provide that would be helpful?

Thanks,
Kyrill

[Bug regression/55486] FAIL: gcc.dg/sms-7.c (internal compiler error)

[dnovillo at google dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55486

--- Comment #3 from dnovillo at google dot com <dnovillo at google dot com> 2012-11-30 15:53:02 UTC ---
On Fri, Nov 30, 2012 at 10:38 AM, kyrylo.tkachov at arm dot com
<gcc-bugzilla@gcc.gnu.org> wrote:
>
> http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55486
>
> --- Comment #2 from Kyrill Tkachov <kyrylo.tkachov at arm dot com> 2012-11-30 15:38:33 UTC ---
> (In reply to comment #1)
>> > Target: arm-none-eabi
>> >
>> > gcc.dg/sms-7.c:17:1: internal compiler error: in schedule_reg_moves, at
>> > modulo-sched.c:725
>>
>> Can you show me the backtrace dump?
>>
>>
>> Thanks.  Diego.
>
> Hi Diego,
>
> As of today, the ICE has gone. The compilation test passes.
> But the execution test fails on qemu:
> FAIL: gcc.dg/sms-7.c execution test

The compilation failure was likely fixed by rev 193667.

2012-11-20  Diego Novillo  <dnovillo@google.com>

        PR middle-end/55398
        * vec.h (class vec_prefix): Make every field public.
        Rename field alloc_ to alloc_PRIVATE_.
        Rename field num_ to num_PRIVATE_.
        Update all users.
        (class vec<T, A, vl_embed>): Make every field public.
        Rename field pfx_ to pfx_PRIVATE_.
        Rename field data_ to data_PRIVATE_.
        Update all users.
        (class vec<T, A, vl_ptr>): Make every field public.
        Rename field vec_ to vec_PRIVATE_.
        Update all users.

> Should this be a separate issue then?

I think so.  Do you know at what rev was this test executing
successfully?  A binary search between the two revs may not help since
you'll run into the ICE.  But I would start diffing dump files between
the working and the broken revision.


Diego.

[Bug regression/55486] FAIL: gcc.dg/sms-7.c (internal compiler error)

[kyrylo.tkachov at arm dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55486

--- Comment #4 from Kyrill Tkachov <kyrylo.tkachov at arm dot com> 2012-12-04 16:55:06 UTC ---
Hello,
Compiler ICEs again, not sure if it's been broken again or it's the previous
cause. The ICE backtrace and relevant configuration are given below.

gcc/testsuite/gcc.dg/sms-7.c:17:1: internal compiler error: in
schedule_reg_moves, at modulo-sched.c:725
0xd2c0f4 schedule_reg_moves
        gcc/modulo-sched.c:725
0xd2ec1f sms_schedule
        gcc/modulo-sched.c:1684
0xd2ffff rest_of_handle_sms
        gcc/modulo-sched.c:3340


Target: arm-none-eabi
Configured with:  --target=arm-none-eabi  --disable-shared --disable-nls
--disable-threads --disable-tls --enable-checking=yes --enable-languages=c
--with-newlib --with-fpu=neon --with-float=hard --with-arch=armv7-a

Thanks,
Kyrill

[Bug regression/55486] FAIL: gcc.dg/sms-7.c (internal compiler error)

[ktkachov at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55486

ktkachov at gcc dot gnu.org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
                 CC|                            |ktkachov at gcc dot gnu.org
         Resolution|                            |FIXED

--- Comment #5 from ktkachov at gcc dot gnu.org 2012-12-20 10:07:02 UTC ---
Tests now pass. No ICEs.

Thanks,
Kyrill