https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92328
Bug ID: 92328
Summary: [10 Regression] ICE in eliminate_stmt, at
tree-ssa-sccvn.c:5497
Product: gcc
Version: 10.0
Status: UNCONFIRMED
Keywords: ice-on-invalid-code
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: asolokha at gmx dot com
Target Milestone: ---
gcc-10.0.0-alpha20191027 snapshot (r277495) ICEs when compiling the following
testcase w/ -O2:
int nt;
void
ja (int os)
{
int *ku = &os, *id = &os;
unsigned int qr = 0;
for (;;)
{
if (os == *ku)
{
*id = 0;
qr += os != *ku;
id = &qr;
}
*id &= qr;
if (os != 0)
{
nt /= 0;
ku = &qr;
}
}
}
% gcc-10.0.0-alpha20191027 -O2 -w -c ewpykney.c
during GIMPLE pass: pre
ewpykney.c: In function 'ja':
ewpykney.c:4:1: internal compiler error: in eliminate_stmt, at
tree-ssa-sccvn.c:5497
4 | ja (int os)
| ^~
0x6a5140 eliminate_dom_walker::eliminate_stmt(basic_block_def*,
gimple_stmt_iterator*)
/var/tmp/portage/sys-devel/gcc-10.0.0_alpha20191027/work/gcc-10-20191027/gcc/tree-ssa-sccvn.c:5497
0xdee2bd eliminate_dom_walker::before_dom_children(basic_block_def*)
/var/tmp/portage/sys-devel/gcc-10.0.0_alpha20191027/work/gcc-10-20191027/gcc/tree-ssa-sccvn.c:5913
0xdee2bd eliminate_dom_walker::before_dom_children(basic_block_def*)
/var/tmp/portage/sys-devel/gcc-10.0.0_alpha20191027/work/gcc-10-20191027/gcc/tree-ssa-sccvn.c:5846
0x1406b6a dom_walker::walk(basic_block_def*)
/var/tmp/portage/sys-devel/gcc-10.0.0_alpha20191027/work/gcc-10-20191027/gcc/domwalk.c:309
0xde657d eliminate_with_rpo_vn(bitmap_head*)
/var/tmp/portage/sys-devel/gcc-10.0.0_alpha20191027/work/gcc-10-20191027/gcc/tree-ssa-sccvn.c:6091
0xdcadb0 execute
/var/tmp/portage/sys-devel/gcc-10.0.0_alpha20191027/work/gcc-10-20191027/gcc/tree-ssa-pre.c:4234
