https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87895
Bug ID: 87895
Summary: ICE in purge_dead_edges, at cfgrtl.c:3246
Product: gcc
Version: 4.9.0
Status: UNCONFIRMED
Keywords: ice-on-invalid-code, openmp
Severity: normal
Priority: P3
Component: rtl-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: asolokha at gmx dot com
Target Milestone: ---
Target: x86_64-pc-linux-gnu
gcc-9.0.0-alpha20181104 snapshot (r265779), 8.2, 7.3, 6.3, 5.4, 4.9.4 all ICE
when compiling the following snippet w/ -fopenmp:
#pragma omp declare simd
int
vm (int oh)
{
if (oh == 0)
return 0;
}
% x86_64-pc-linux-gnu-gcc-9.0.0-alpha20181104 -fopenmp -c eyi5ymyi.c
during RTL pass: expand
eyi5ymyi.c: In function 'vm.simdclone.0':
eyi5ymyi.c:7:1: internal compiler error: in purge_dead_edges, at cfgrtl.c:3246
7 | }
| ^
0x5dd3b1 purge_dead_edges(basic_block_def*)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20181104/work/gcc-9-20181104/gcc/cfgrtl.c:3246
0x144f5d4 find_bb_boundaries
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20181104/work/gcc-9-20181104/gcc/cfgbuild.c:589
0x144f5d4 find_many_sub_basic_blocks(simple_bitmap_def*)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20181104/work/gcc-9-20181104/gcc/cfgbuild.c:672
0x8a53d1 execute
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20181104/work/gcc-9-20181104/gcc/cfgexpand.c:651
