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Re: optimization/10024: [3.4 regression] [HP-PA] inline optimization ICE
- From: Jan Hubicka <jh at suse dot cz>
- To: John David Anglin <dave at hiauly1 dot hia dot nrc dot ca>
- Cc: zack at gcc dot gnu dot org, gcc-bugs at gcc dot gnu dot org, gcc-prs at gcc dot gnu dot org,hubica at gcc dot gnu dot org, tausq at debian dot org
- Date: Tue, 8 Apr 2003 23:28:24 +0200
- Subject: Re: optimization/10024: [3.4 regression] [HP-PA] inline optimization ICE
- References: <200304081616.h38GGBgZ017258@hiauly1.hia.nrc.ca>
> It appears that the addition of the following patch
>
> Mon Apr 7 15:56:30 CEST 2003 Jan Hubicka <jh at suse dot cz>
>
> PR opt/10024
> Revert Zack's change
> * cfglayout.c (cfg_layout_redirect_edge):
> Redirect any branch edges unified with the fallthru one.
> * cfgrtl.c (force_nonfallthru_and_redirect): Do not special
> case fallthru edges when called via cfglayout.c
>
> causes gcc.c-torture/compile/20030405-1.c to fail on
> hppa2.0w-hp-hpux11.11 on the 3.3 branch at -O2 and above.
>
> <http://gcc.gnu.org/ml/gcc-testresults/2003-04/msg00438.html>.
>
> The test passed in my previous build.
>
> Running under gdb, the crash occurs at the spot mentioned by Zack
> in the audit trail:
>
> Starting program: /xxx/gnu/gcc-3.3/objdir/gcc/testsuite/../cc1 -O2 /xxx/gnu/gcc-3.3/gcc/gcc/testsuite/gcc.c-torture/compile/20030405-1.c
> warning: Unable to find __d_pid symbol in object file.
> warning: Suggest linking with /opt/langtools/lib/end.o.
> warning: GDB will be unable to track shl_load/shl_unload calls
> fixfloor fixtoi ftofix fixtof fixdiv itofix foo
> Program received signal SIGSEGV, Segmentation fault.
> force_nonfallthru_and_redirect (e=0x4008a000, target=0x40089a60)
> at ../../gcc/gcc/cfgrtl.c:961
> 961 b->probability = prob;
> (gdb) p b
> $1 = 0x0
Uhm... not again :(
I will look into this tomorrow.
Honza
>
> Dave
> --
> J. David Anglin dave dot anglin at nrc-cnrc dot gc dot ca
> National Research Council of Canada (613) 990-0752 (FAX: 952-6602)
>