https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110614
Bug ID: 110614
Summary: [14 Regression] ICE in vect_supportable_dr_alignment
Product: gcc
Version: 14.0
Status: UNCONFIRMED
Keywords: ice-on-valid-code
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: dje at gcc dot gnu.org
Target Milestone: ---
Target: powerpc*-*-*
Beginning with
commit dd86a5a69cbda40cf76388a65d3317c91cb2b501
Author: Richard Biener <rguent...@suse.de>
Date: Thu Jun 22 11:40:46 2023 +0200
A number of GCC testsuite test cases ICE in vect_supportable_dr_alignment()
gcc/testsuite/gcc.dg/torture/pr68379.c
$ ./xgcc -B./ -S -O2 -mcpu=power7 pr68379.c
during GIMPLE pass: vect
pr68379.c: In function ‘fn1’:
pr68379.c:6:1: internal compiler error: Segmentation fault
6 | fn1 ()
| ^~~
0x10c1d833 crash_signal
/home/dje/src/gcc/gcc/toplev.cc:314
0x11b4ebd0 vect_supportable_dr_alignment(vec_info*, dr_vec_info*, tree_node*,
int)
/home/dje/src/gcc/gcc/tree-vect-data-refs.cc:6833
0x11b53717 vect_enhance_data_refs_alignment(_loop_vec_info*)
/home/dje/src/gcc/gcc/tree-vect-data-refs.cc:2044
0x10fc35bb vect_analyze_loop_2
/home/dje/src/gcc/gcc/tree-vect-loop.cc:2783
0x10fc4d8f vect_analyze_loop_1
/home/dje/src/gcc/gcc/tree-vect-loop.cc:3316
0x10fc56bb vect_analyze_loop(loop*, vec_info_shared*)
/home/dje/src/gcc/gcc/tree-vect-loop.cc:3470
0x110174e7 try_vectorize_loop_1
/home/dje/src/gcc/gcc/tree-vectorizer.cc:1064
0x110174e7 try_vectorize_loop
/home/dje/src/gcc/gcc/tree-vectorizer.cc:1180
0x11017fa3 execute
/home/dje/src/gcc/gcc/tree-vectorizer.cc:1296
The test cases succeed with Power8, Power9, or Power10, but ICE with
-mcpu=power7. command line option.
