https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115149
Bug ID: 115149
Summary: ICE on valid code at -O3 with "-fno-inline
-fno-tree-vrp -fno-ipa-sra -fno-tree-dce -fno-tree-ch"
on x86_64-linux-gnu: verify_ssa failed
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-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 as it doesn't reproduce with 14.1 and
earlier.
Compiler Explorer: https://godbolt.org/z/xGfY5vofe
[729] % gcctk -v
Using built-in specs.
COLLECT_GCC=gcctk
COLLECT_LTO_WRAPPER=/local/suz-local/software/local/gcc-trunk/libexec/gcc/x86_64-pc-linux-gnu/15.0.0/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 15.0.0 20240516 (experimental) (GCC)
[730] %
[730] % gcctk -O3 -fno-inline -fno-tree-vrp -fno-ipa-sra -fno-tree-dce
-fno-tree-ch small.c
small.c: In function ‘main’:
small.c:4:5: error: stmt with wrong VUSE
4 | int main() {
| ^~~~
# VUSE <.MEM_16(D)>
c_lsm.18_25 = c;
expected .MEM_17
during GIMPLE pass: sink
small.c:4:5: internal compiler error: verify_ssa failed
0x140abbe verify_ssa(bool, bool)
../../gcc-trunk/gcc/tree-ssa.cc:1203
0x102ded5 execute_function_todo
../../gcc-trunk/gcc/passes.cc:2096
0x102e73e execute_todo
../../gcc-trunk/gcc/passes.cc:2143
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.
[731] %
[731] % cat small.c
int a, c, e, f, g, h[1], i;
static int j(int b) { return 0; }
static void k(int d) {}
int main() {
if (h[0])
while (1) {
k(f && j(i && (h[g] = e)));
while (a)
c ^= 1;
}
return 0;
}
