[Bug tree-optimization/94456] New: ICE in aarch64/sve/pr87815.c since r10-7491

[clyon at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94456

            Bug ID: 94456
           Summary: ICE in aarch64/sve/pr87815.c since r10-7491
           Product: gcc
           Version: 10.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: clyon at gcc dot gnu.org
  Target Milestone: ---

Since r10-7491, I've noticed a regression with an ICE:

FAIL: gcc.target/aarch64/sve/pr87815.c -march=armv8.2-a+sve (internal compiler
error)


/gcc/testsuite/gcc.target/aarch64/sve/pr87815.c: In function 'f':
/gcc/testsuite/gcc.target/aarch64/sve/pr87815.c:6:6: error: missing definition
for SSA_NAME: _50 in statement:
_31 = _50;
during GIMPLE pass: vect
/gcc/testsuite/gcc.target/aarch64/sve/pr87815.c:6:6: internal compiler error:
verify_ssa failed
0xfe9253 verify_ssa(bool, bool)
        /gcc/tree-ssa.c:1208
0xc6c293 execute_function_todo
        /gcc/passes.c:1992
0xc6cb75 execute_todo
        /gcc/passes.c:2039
Please submit a full bug report,
with preprocessed source if appropriate.