https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84584
Bug ID: 84584
Summary: [8 Regression] [graphite] ICE: Segmentation fault (in
dominated_by_p)
Product: gcc
Version: 8.0
Status: UNCONFIRMED
Keywords: ice-on-valid-code
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: asolokha at gmx dot com
Target Milestone: ---
gcc-8.0.0-alpha20180225 snapshot (r257975) ICEs when compiling the following
snippet w/ -O1 (-O2, -O3, -Ofast) -fgraphite-identity -fno-tree-loop-im:
int q3, w1;
void
bw (int b8)
{
const int sd = 2;
int mc;
for (mc = 0; mc < sd; ++mc)
{
ik:
for (w1 = 0; w1 < sd; ++w1)
++b8;
}
for (q3 = 0; q3 < sd; ++q3)
{
}
goto ik;
}
% gcc-8.0.0-alpha20180225 -O1 -fgraphite-identity -fno-tree-loop-im -c
w8fja3ap.c
during GIMPLE pass: graphite
w8fja3ap.c: In function 'bw':
w8fja3ap.c:4:1: internal compiler error: Segmentation fault
bw (int b8)
^~
0xc9d7bf crash_signal
/var/tmp/portage/sys-devel/gcc-8.0.0_alpha20180225/work/gcc-8-20180225/gcc/toplev.c:325
0x8f73e9 dominated_by_p(cdi_direction, basic_block_def const*, basic_block_def
const*)
/var/tmp/portage/sys-devel/gcc-8.0.0_alpha20180225/work/gcc-8-20180225/gcc/dominance.c:1118
0x1465a71 bb_in_region
/var/tmp/portage/sys-devel/gcc-8.0.0_alpha20180225/work/gcc-8-20180225/gcc/sese.h:124
0x1465a71 bb_in_sese_p
/var/tmp/portage/sys-devel/gcc-8.0.0_alpha20180225/work/gcc-8-20180225/gcc/sese.h:134
0x1465a71 loop_in_sese_p
/var/tmp/portage/sys-devel/gcc-8.0.0_alpha20180225/work/gcc-8-20180225/gcc/sese.h:159
0x1465a71 add_loop_constraints
/var/tmp/portage/sys-devel/gcc-8.0.0_alpha20180225/work/gcc-8-20180225/gcc/graphite-sese-to-poly.c:747
0x14660e5 build_iteration_domains
/var/tmp/portage/sys-devel/gcc-8.0.0_alpha20180225/work/gcc-8-20180225/gcc/graphite-sese-to-poly.c:852
0x146667f build_poly_scop(scop*)
/var/tmp/portage/sys-devel/gcc-8.0.0_alpha20180225/work/gcc-8-20180225/gcc/graphite-sese-to-poly.c:1215
0x1457f40 graphite_transform_loops()
/var/tmp/portage/sys-devel/gcc-8.0.0_alpha20180225/work/gcc-8-20180225/gcc/graphite.c:406
0x1458470 graphite_transforms
/var/tmp/portage/sys-devel/gcc-8.0.0_alpha20180225/work/gcc-8-20180225/gcc/graphite.c:475
0x1458470 execute
/var/tmp/portage/sys-devel/gcc-8.0.0_alpha20180225/work/gcc-8-20180225/gcc/graphite.c:552
