https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84206
Bug ID: 84206
Summary: ICE in get_all_loop_exits, at sel-sched-ir.h:1138
Product: gcc
Version: 8.0
Status: UNCONFIRMED
Keywords: ice-on-valid-code
Severity: normal
Priority: P3
Component: rtl-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: asolokha at gmx dot com
Target Milestone: ---
Target: powerpc-*-linux-gnu, powerpcspe-*-linux-gnu
gcc-8.0.0-alpha20180204 snapshot (r257367) ICEs when compiling the following
snippet w/ -O2 -fselective-scheduling -fsel-sched-pipelining
-fsel-sched-pipelining-outer-loops -fno-forward-propagate -fno-tree-fre:
long long unsigned int ao;
int hk;
void
b8 (void)
{
int *w9;
c8:
ao = 0;
w9 = &ao;
for (;;)
for (hk = 0; hk < 1; ++hk)
for (ao = 0; ao < 4; ++ao)
{
int f4 = (ao != 0) ? *w9 : hk;
if (f4 != 0)
goto c8;
}
}
% powerpc-e300c3-linux-gnu-gcc-8.0.0-alpha20180204 -O2 -fselective-scheduling
-fsel-sched-pipelining -fsel-sched-pipelining-outer-loops
-fno-forward-propagate -fno-tree-fre -w -c isyp3qtx.c
during RTL pass: sched1
isyp3qtx.c: In function 'b8':
isyp3qtx.c:21:1: internal compiler error: in get_all_loop_exits, at
sel-sched-ir.h:1138
}
^
0xbf8740 get_all_loop_exits
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-8.0.0_alpha20180204/work/gcc-8-20180204/gcc/sel-sched-ir.h:1138
0xbf83ae get_all_loop_exits
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-8.0.0_alpha20180204/work/gcc-8-20180204/gcc/sel-sched-ir.h:1164
0xbfb7c5 _succ_iter_cond
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-8.0.0_alpha20180204/work/gcc-8-20180204/gcc/sel-sched-ir.h:1302
0xbfbb2b init_seqno_1
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-8.0.0_alpha20180204/work/gcc-8-20180204/gcc/sel-sched.c:6743
0xbfbae9 init_seqno_1
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-8.0.0_alpha20180204/work/gcc-8-20180204/gcc/sel-sched.c:6755
0xbfbae9 init_seqno_1
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-8.0.0_alpha20180204/work/gcc-8-20180204/gcc/sel-sched.c:6755
0xbfbfd1 init_seqno
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-8.0.0_alpha20180204/work/gcc-8-20180204/gcc/sel-sched.c:6795
0xc080f1 sel_sched_region_1
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-8.0.0_alpha20180204/work/gcc-8-20180204/gcc/sel-sched.c:7529
0xc080f1 sel_sched_region(int)
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-8.0.0_alpha20180204/work/gcc-8-20180204/gcc/sel-sched.c:7642
0xc08841 run_selective_scheduling()
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-8.0.0_alpha20180204/work/gcc-8-20180204/gcc/sel-sched.c:7718
0xbdf634 rest_of_handle_sched
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-8.0.0_alpha20180204/work/gcc-8-20180204/gcc/sched-rgn.c:3715
0xbdf634 execute
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-8.0.0_alpha20180204/work/gcc-8-20180204/gcc/sched-rgn.c:3825
