https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106923
Bug ID: 106923
Summary: [13 Regression] ICE in eliminate_unnecessary_stmts, at
tree-ssa-dce.cc:1512
Product: gcc
Version: 13.0
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 13.0.0 20220911 snapshot (g:0ea5e3f4542832b8da016b152695e64a2a386309) ICEs
when compiling the following testcase w/ -O1 -finline-small-functions
-fpartial-inlining --param max-inline-insns-single=1 --param
uninlined-function-insns=10000:
int n;
int
baz (void);
__attribute__ ((returns_twice)) int
bar (void)
{
if (baz ())
++n;
return 0;
}
int
foo (void)
{
return bar ();
}
% gcc-13.0.0 -O1 -finline-small-functions -fpartial-inlining --param
max-inline-insns-single=1 --param uninlined-function-insns=10000 -c xe0blvxx.c
during GIMPLE pass: dce
xe0blvxx.c: In function 'bar':
xe0blvxx.c:7:1: internal compiler error: in eliminate_unnecessary_stmts, at
tree-ssa-dce.cc:1512
7 | bar (void)
| ^~~
0x771cd5 eliminate_unnecessary_stmts
/var/tmp/portage/sys-devel/gcc-13.0.0_p20220911/work/gcc-13-20220911/gcc/tree-ssa-dce.cc:1512
0x771cd5 perform_tree_ssa_dce
/var/tmp/portage/sys-devel/gcc-13.0.0_p20220911/work/gcc-13-20220911/gcc/tree-ssa-dce.cc:1945
