https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65983
Bug ID: 65983
Summary: [6 Regression] ICE: SIGSEGV in mark_label_nuses
(emit-rtl.c:3618) with -fsanitize=thread -mavx512ifma
-march=barcelona
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: zsojka at seznam dot cz
Target Milestone: ---
Created attachment 35442
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=35442&action=edit
reduced testcase
Compiler output:
$ gcc -fsanitize=thread -mavx512ifma -march=barcelona testcase.c
testcase.c: In function 'foo':
testcase.c:10:1: internal compiler error: Segmentation fault
}
^
0xb635ff crash_signal
/mnt/svn/gcc-trunk/gcc/toplev.c:380
0x7c664e mark_label_nuses
/mnt/svn/gcc-trunk/gcc/emit-rtl.c:3618
0x7c66d8 mark_label_nuses
/mnt/svn/gcc-trunk/gcc/emit-rtl.c:3625
0x7c66d8 mark_label_nuses
/mnt/svn/gcc-trunk/gcc/emit-rtl.c:3625
0x7d49f9 try_split(rtx_def*, rtx_def*, int)
/mnt/svn/gcc-trunk/gcc/emit-rtl.c:3814
0xa95738 split_insn
/mnt/svn/gcc-trunk/gcc/recog.c:2919
0xa9dd0d split_all_insns()
/mnt/svn/gcc-trunk/gcc/recog.c:3009
0xa9de38 rest_of_handle_split_before_sched2
/mnt/svn/gcc-trunk/gcc/recog.c:4060
0xa9de38 execute
/mnt/svn/gcc-trunk/gcc/recog.c:4099
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.
Tested revisions:
r222716 - ICE
5 r222437 - OK
