https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103253
Arseny Solokha <asolokha at gmx dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[12 Regression] ICE: |[12 Regression] ICE:
|Segmentation fault (in |Segmentation fault (in
|convert_mult_to_fma) |convert_mult_to_fma or in
| |vect_recog_mask_conversion_
| |pattern)
--- Comment #1 from Arseny Solokha <asolokha at gmx dot com> ---
And compiling the following testcase, reduced from the same original file, w/
-march=knm -O2 -fassociative-math -fopenmp -fno-delete-dead-exceptions
-fno-signed-zeros -fno-trapping-math, yields this instead:
double
do_work (double *A, double do_work_pri)
{
int i;
#pragma omp simd
for (i = 0; i < 30; ++i)
do_work_pri = !i ? 0.5 : i * 0.5 + A[i];
return do_work_pri;
}
% x86_64-unknown-linux-gnu-g++-12.0.0 -march=knm -O2 -fassociative-math
-fopenmp -fno-delete-dead-exceptions -fno-signed-zeros -fno-trapping-math -c
qozmqkqm.c
during GIMPLE pass: slp
qozmqkqm.c: In function 'double do_work(double*, double)':
qozmqkqm.c:2:1: internal compiler error: Segmentation fault
2 | do_work (double *A, double do_work_pri)
| ^~~~~~~
0x1182a5f crash_signal
/var/tmp/portage/sys-devel/gcc-12.0.0_alpha20211114/work/gcc-12-20211114/gcc/toplev.c:322
0x2011579 contains_struct_check(tree_node*, tree_node_structure_enum, char
const*, int, char const*)
/var/tmp/portage/sys-devel/gcc-12.0.0_alpha20211114/work/gcc-12-20211114/gcc/tree.h:3554
0x2011579 vect_recog_mask_conversion_pattern
/var/tmp/portage/sys-devel/gcc-12.0.0_alpha20211114/work/gcc-12-20211114/gcc/tree-vect-patterns.c:4509
0x20125ca vect_pattern_recog_1
/var/tmp/portage/sys-devel/gcc-12.0.0_alpha20211114/work/gcc-12-20211114/gcc/tree-vect-patterns.c:5689
0x2019d1d vect_pattern_recog(vec_info*)
/var/tmp/portage/sys-devel/gcc-12.0.0_alpha20211114/work/gcc-12-20211114/gcc/tree-vect-patterns.c:5846
0x142cb0a vect_slp_analyze_bb_1
/var/tmp/portage/sys-devel/gcc-12.0.0_alpha20211114/work/gcc-12-20211114/gcc/tree-vect-slp.c:5737
0x142cb0a vect_slp_region
/var/tmp/portage/sys-devel/gcc-12.0.0_alpha20211114/work/gcc-12-20211114/gcc/tree-vect-slp.c:5846
0x142ec2b vect_slp_bbs
/var/tmp/portage/sys-devel/gcc-12.0.0_alpha20211114/work/gcc-12-20211114/gcc/tree-vect-slp.c:6038
0x142f09b vect_slp_function(function*)
/var/tmp/portage/sys-devel/gcc-12.0.0_alpha20211114/work/gcc-12-20211114/gcc/tree-vect-slp.c:6126
0x1435ad1 execute
/var/tmp/portage/sys-devel/gcc-12.0.0_alpha20211114/work/gcc-12-20211114/gcc/tree-vectorizer.c:1459
(Note g++ instead of gcc here.)
