https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110940
Bug ID: 110940
Summary: ICE at -O3 on x86_64-linux-gnu: in apply_scale, at
profile-count.h:1180
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: rtl-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: zhendong.su at inf dot ethz.ch
Target Milestone: ---
This appears to be a recent regression.
Compiler Explorer: https://godbolt.org/z/evGMc8xEW
[595] % gcctk -v
Using built-in specs.
COLLECT_GCC=gcctk
COLLECT_LTO_WRAPPER=/local/home/suz/suz-local/software/local/gcc-trunk/bin/../libexec/gcc/x86_64-pc-linux-gnu/14.0.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: ../gcc-trunk/configure --disable-bootstrap
--enable-checking=yes --prefix=/local/suz-local/software/local/gcc-trunk
--enable-sanitizers --enable-languages=c,c++ --disable-werror --enable-multilib
Thread model: posix
Supported LTO compression algorithms: zlib
gcc version 14.0.0 20230808 (experimental) (GCC)
[596] %
[596] % gcctk -O3 -c small.c
during GIMPLE pass: vect
small.c: In function ‘main’:
small.c:3:5: internal compiler error: in apply_scale, at profile-count.h:1180
3 | int main() {
| ^~~~
0xab66c3 profile_count::apply_scale(profile_count, profile_count) const
../../gcc-trunk/gcc/profile-count.h:1180
0x10311cf fold_loop_internal_call(gimple*, tree_node*)
../../gcc-trunk/gcc/tree-cfg.cc:7738
0x12d2ef5 execute
../../gcc-trunk/gcc/tree-vectorizer.cc:1328
Please submit a full bug report, with preprocessed source (by using
-freport-bug).
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
[597] %
[597] % cat small.c
int a, b[1], c, *d = &a, e, f, g, h, i, j;
extern int l();
int main() {
if (l())
for (;;)
for (; g;)
for (; e;)
for (; a;)
for (; f;)
for (; h;)
for (; i;)
for (; c;)
for (; j;)
;
l();
for (; c; c++)
b[*d] = 0;
return 0;
}
