[Bug other/43562] GCC ICE on optimize attribute
pinskia at gmail dot com
gcc-bugzilla@gcc.gnu.org
Mon Apr 19 19:11:00 GMT 2010
------- Comment #14 from pinskia at gmail dot com 2010-04-19 19:11 -------
Subject: Re: GCC ICE on optimize attribute
Sent from my iPhone
On Apr 19, 2010, at 12:02 AM, "jakub at gcc dot gnu dot org"
<gcc-bugzilla@gcc.gnu.org
> wrote:
>
>
> ------- Comment #11 from jakub at gcc dot gnu dot org 2010-04-19
> 07:02 -------
> This change broke building wine on x86-64.
There was already a bug filed for this and a patch was committed today
or yesterday to the trunk to fix this ice.
> Distilled testcase:
> __attribute__ ((ms_abi)) fn2 (int, int);
> struct S { int s; };
> struct T { int t; struct S *u; };
>
> void
> foo (struct T *x, void *y)
> {
> int a, b, c, d;
> fn1 (0, &a, &b, &c, &d);
> x->u[x->t].s = fn2 (fn3 (), a);
> fn1 (y, &a, &b, &c, &d);
> }
>
> __attribute__ ((ms_abi)) void
> bar (int x)
> {
> }
>
> void
> baz (int x)
> {
> }
>
> now ICEs at -O2 on x86_64-linux with:
> wineice.i: In function 'foo':
> wineice.i:12: internal compiler error: in insert_save, at caller-
> save.c:1171
> Please submit a full bug report,
> with preprocessed source if appropriate.
> See <http://gcc.gnu.org/bugs.html> for instructions.
>
> Apparently setup_save_areas
> saved_reg->slot
> = assign_stack_local_1
> (regno_save_mode[regno][1],
> GET_MODE_SIZE (regno_save_mode[regno][1]), 0,
> true);
> creates a slot where regno_save_mode[regno][1] for regno 4 is
> VOIDmode, and the
> VOIDmode MEM which has MEM_ALIGN 0 then confuses everything.
>
>
> --
>
> jakub at gcc dot gnu dot org changed:
>
> What |Removed |Added
> ---
> ---
> ----------------------------------------------------------------------
> Status|RESOLVED |UNCONFIRMED
> Resolution|FIXED |
>
>
> http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43562
>
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43562
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