https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88069
Bug ID: 88069
Summary: [9 Regression] ICE in check_loop_closed_ssa_def, at
tree-ssa-loop-manip.c:709
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Keywords: ice-on-valid-code
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-alpha20181111 snapshot (r266019) ICEs when compiling the following
snippet w/ -O1 (-O2, -O3, -Ofast) -ftree-pre -ftree-vectorize -fno-tree-pta:
void
qf (void);
void
mr (short int db)
{
int vq;
short int *lp = &db;
for (vq = 0; vq < 1; ++vq)
qf ();
while (*lp < 2)
{
*lp = db;
lp = (short int *) &vq;
++*lp;
}
}
% gcc-9.0.0-alpha20181111 -O1 -ftree-pre -ftree-vectorize -fno-tree-pta -c
n5bt3ltb.c
during GIMPLE pass: ch_vect
n5bt3ltb.c: In function 'mr':
n5bt3ltb.c:5:1: internal compiler error: in check_loop_closed_ssa_def, at
tree-ssa-loop-manip.c:709
5 | mr (short int db)
| ^~
0x6a0e44 check_loop_closed_ssa_def
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20181111/work/gcc-9-20181111/gcc/tree-ssa-loop-manip.c:709
0xe31ec8 check_loop_closed_ssa_bb
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20181111/work/gcc-9-20181111/gcc/tree-ssa-loop-manip.c:735
0xe34056 verify_loop_closed_ssa(bool, loop*)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20181111/work/gcc-9-20181111/gcc/tree-ssa-loop-manip.c:760
0xe34056 verify_loop_closed_ssa(bool, loop*)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20181111/work/gcc-9-20181111/gcc/tree-ssa-loop-manip.c:744
0xc04b34 execute_function_todo
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20181111/work/gcc-9-20181111/gcc/passes.c:1943
0xc058de execute_todo
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20181111/work/gcc-9-20181111/gcc/passes.c:1979
