https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95717
Bug ID: 95717
Summary: ICE during GIMPLE pass: vect: verify_ssa failed
Product: gcc
Version: 11.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: vsevolod.livinskij at frtk dot ru
Target Milestone: ---
Error:
$ g++ -c -O3 func.cpp
func.cpp: In function ‘void g(bool)’:
func.cpp:5:6: error: definition in block 61 does not dominate use in block 59
5 | void g(bool h) {
| ^
for SSA_NAME: prephitmp_100 in statement:
prephitmp_100 = PHI <prephitmp_100(59), _103(62)>
PHI argument
prephitmp_100
for PHI node
prephitmp_100 = PHI <prephitmp_100(59), _103(62)>
during GIMPLE pass: vect
func.cpp:5:6: internal compiler error: verify_ssa failed
0x13368a2 verify_ssa(bool, bool)
gcc/tree-ssa.c:1208
0x10228a5 execute_function_todo
gcc/passes.c:1992
0x102357e execute_todo
gcc/passes.c:2039
Reproducer:
bool a;
extern bool b[];
long c, d;
int *f;
void g(bool h) {
for (short e = 0; e < c; e = 4)
for (; d; d++)
b[d] = a = f[d] ? c ? h : 0 : h;
}
GCC version:
gcc version 11.0.0 (56638b9b1853666f575928f8baf17f70e4ed3517)
