diff options
Diffstat (limited to 'gcc/tree-ssa-sccvn.c')
| -rw-r--r-- | gcc/tree-ssa-sccvn.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/gcc/tree-ssa-sccvn.c b/gcc/tree-ssa-sccvn.c index 3d814fc2e0b..255e8a533b8 100644 --- a/gcc/tree-ssa-sccvn.c +++ b/gcc/tree-ssa-sccvn.c @@ -1120,7 +1120,7 @@ vn_reference_lookup_3 (ao_ref *ref, tree vuse, void *vr_) copy_reference_ops_from_ref (gimple_assign_lhs (def_stmt), &lhs); i = VEC_length (vn_reference_op_s, vr->operands) - 1; j = VEC_length (vn_reference_op_s, lhs) - 1; - while (j >= 0 + while (j >= 0 && i >= 0 && vn_reference_op_eq (VEC_index (vn_reference_op_s, vr->operands, i), VEC_index (vn_reference_op_s, lhs, j))) @@ -1128,13 +1128,14 @@ vn_reference_lookup_3 (ao_ref *ref, tree vuse, void *vr_) i--; j--; } + + VEC_free (vn_reference_op_s, heap, lhs); /* i now points to the first additional op. ??? LHS may not be completely contained in VR, one or more VIEW_CONVERT_EXPRs could be in its way. We could at least try handling outermost VIEW_CONVERT_EXPRs. */ if (j != -1) return (void *)-1; - VEC_free (vn_reference_op_s, heap, lhs); /* Now re-write REF to be based on the rhs of the assignment. */ copy_reference_ops_from_ref (gimple_assign_rhs1 (def_stmt), &rhs); |