https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96491
Bug ID: 96491
Summary: [11 Regression] ICE: tree check: expected ssa_name,
have integer_cst in add_phi_arg, at
tree-phinodes.c:373
Product: gcc
Version: 11.0
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-11.0.0-alpha20200802 snapshot (g:6e46b3f3da5c03bc529b3690dd0995927feb9142)
ICEs when compiling the following testcase w/ -O1:
int rj;
void __attribute__ ((returns_twice))
da (void)
{
rj = 1;
}
void
c5 (void)
{
for (;;)
++rj;
}
void
ls (int kz)
{
if (kz == 0)
{
rj = 0;
c5 ();
}
da ();
c5 ();
}
% gcc-11.0.0 -O1 -c qqdrbiy8.c
during GIMPLE pass: sink
qqdrbiy8.c: In function 'ls':
qqdrbiy8.c:17:1: internal compiler error: tree check: expected ssa_name, have
integer_cst in add_phi_arg, at tree-phinodes.c:373
17 | ls (int kz)
| ^~
0x707146 tree_check_failed(tree_node const*, char const*, int, char const*,
...)
/var/tmp/portage/sys-devel/gcc-11.0.0_alpha20200802/work/gcc-11-20200802/gcc/tree.c:9687
0x6be83b tree_check(tree_node*, char const*, int, char const*, tree_code)
/var/tmp/portage/sys-devel/gcc-11.0.0_alpha20200802/work/gcc-11-20200802/gcc/tree.h:3303
0x6be83b add_phi_arg(gphi*, tree_node*, edge_def*, unsigned int)
/var/tmp/portage/sys-devel/gcc-11.0.0_alpha20200802/work/gcc-11-20200802/gcc/tree-phinodes.c:373
0xf997e1 sink_common_stores_to_bb
/var/tmp/portage/sys-devel/gcc-11.0.0_alpha20200802/work/gcc-11-20200802/gcc/tree-ssa-sink.c:594
0xf997e1 sink_code_in_bb
/var/tmp/portage/sys-devel/gcc-11.0.0_alpha20200802/work/gcc-11-20200802/gcc/tree-ssa-sink.c:656
0xf98cea sink_code_in_bb
/var/tmp/portage/sys-devel/gcc-11.0.0_alpha20200802/work/gcc-11-20200802/gcc/tree-ssa-sink.c:743
0xf98cea sink_code_in_bb
/var/tmp/portage/sys-devel/gcc-11.0.0_alpha20200802/work/gcc-11-20200802/gcc/tree-ssa-sink.c:743
0xf9a5ce execute
/var/tmp/portage/sys-devel/gcc-11.0.0_alpha20200802/work/gcc-11-20200802/gcc/tree-ssa-sink.c:824
