diff options
Diffstat (limited to 'gcc/tree-vect-loop-manip.c')
| -rw-r--r-- | gcc/tree-vect-loop-manip.c | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/gcc/tree-vect-loop-manip.c b/gcc/tree-vect-loop-manip.c index ecb446c02f4c..ebcbfb47c5f2 100644 --- a/gcc/tree-vect-loop-manip.c +++ b/gcc/tree-vect-loop-manip.c @@ -483,7 +483,18 @@ slpeel_update_phi_nodes_for_guard1 (edge guard_edge, struct loop *loop, if (!current_new_name) continue; } - gcc_assert (get_current_def (current_new_name) == NULL_TREE); + tree new_name = get_current_def (current_new_name); + /* Because of peeled_chrec optimization it is possible that we have + set this earlier. Verify the PHI has the same value. */ + if (new_name) + { + gimple phi = SSA_NAME_DEF_STMT (new_name); + gcc_assert (gimple_code (phi) == GIMPLE_PHI + && gimple_bb (phi) == *new_exit_bb + && (PHI_ARG_DEF_FROM_EDGE (phi, single_exit (loop)) + == loop_arg)); + continue; + } set_current_def (current_new_name, PHI_RESULT (new_phi)); } |