[Bug c/17806] New: compiler error: in verify_loop_structure, at cfgloop.c:1491 , works -O2, breaks with -O3
olh at suse dot de
gcc-bugzilla@gcc.gnu.org
Sun Oct 3 12:01:00 GMT 2004
from package 'superlu':
works with -O2
/home/olaf/toolchain/obj/gcc-head-2004-10-03/inst/libexec/gcc/powerpc-unknown-linux-gnu/4.0.0/cc1 /tmp/mmd.i -fpreprocessed -o /dev/null -quiet -O3
mmd.c: In function 'mmdupd_':
mmd.c:573: error: Basic block 127 should be marked irreducible.
mmd.c:573: error: Edge from 127 to 98 should be marked irreducible.
mmd.c:573: error: Basic block 131 should be marked irreducible.
mmd.c:573: error: Edge from 131 to 107 should be marked irreducible.
mmd.c:573: internal compiler error: in verify_loop_structure, at cfgloop.c:1491
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://gcc.gnu.org/bugs.html> for instructions.
--
Summary: compiler error: in verify_loop_structure, at
cfgloop.c:1491 , works -O2, breaks with -O3
Product: gcc
Version: 4.0.0
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: c
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: olh at suse dot de
CC: gcc-bugs at gcc dot gnu dot org
GCC build triplet: powerpc-linux
GCC host triplet: powerpc-linux
GCC target triplet: powerpc-linux
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17806
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