https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88107
Bug ID: 88107
Summary: [9 Regression] ICE in find_outermost_region_in_block,
at tree-cfg.c:7157
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Keywords: ice-on-valid-code, openmp
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: asolokha at gmx dot com
Target Milestone: ---
gcc-9.0.0-alpha20181118 shapshot (r266255) ICEs when compiling
gcc/testsuite/c-c++-common/gomp/for-1.c w/ -O1 (-O2, -O3, -Ofast) -fexceptions
-floop-nest-optimize -fnon-call-exceptions -fopenmp -ftree-parallelize-loops=2
--param parloops-min-per-thread=32:
% gcc-9.0.0-alpha20181118 -O1 -fexceptions -floop-nest-optimize
-fnon-call-exceptions -fopenmp -ftree-parallelize-loops=2 --param
parloops-min-per-thread=32 -c gcc/testsuite/c-c++-common/gomp/for-1.c
during GIMPLE pass: ompexpssa
gcc/testsuite/c-c++-common/gomp/for-1.c: In function 'foo._loopfn.0':
gcc/testsuite/c-c++-common/gomp/for-1.c:6:1: internal compiler error: in
find_outermost_region_in_block, at tree-cfg.c:7157
6 | foo (void)
| ^~~
0x671794 find_outermost_region_in_block
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20181118/work/gcc-9-20181118/gcc/tree-cfg.c:7157
0x671794 move_sese_region_to_fn(function*, basic_block_def*, basic_block_def*,
tree_node*)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20181118/work/gcc-9-20181118/gcc/tree-cfg.c:7494
0xbb578c expand_omp_taskreg
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20181118/work/gcc-9-20181118/gcc/omp-expand.c:1420
0xbbb7f7 expand_omp_synch
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20181118/work/gcc-9-20181118/gcc/omp-expand.c:6328
0xbbb7f7 expand_omp
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20181118/work/gcc-9-20181118/gcc/omp-expand.c:8148
0xbbd6cd execute_expand_omp
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20181118/work/gcc-9-20181118/gcc/omp-expand.c:8340
