diff options
Diffstat (limited to 'gcc/tree-vect-loop-manip.cc')
| -rw-r--r-- | gcc/tree-vect-loop-manip.cc | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/gcc/tree-vect-loop-manip.cc b/gcc/tree-vect-loop-manip.cc index 2a1f9cd..1d6e5e0 100644 --- a/gcc/tree-vect-loop-manip.cc +++ b/gcc/tree-vect-loop-manip.cc @@ -4066,7 +4066,16 @@ vect_loop_versioning (loop_vec_info loop_vinfo, basic_block preheader = loop_preheader_edge (loop_to_version)->src; preheader->count = preheader->count.apply_probability (prob * prob2); scale_loop_frequencies (loop_to_version, prob * prob2); - single_exit (loop_to_version)->dest->count = preheader->count; + /* When the loop has multiple exits then we can only version itself. + This is denoted by loop_to_version == loop. In this case we can + do the versioning by selecting the exit edge the vectorizer is + currently using. */ + edge exit_edge; + if (loop_to_version == loop) + exit_edge = LOOP_VINFO_IV_EXIT (loop_vinfo); + else + exit_edge = single_exit (loop_to_version); + exit_edge->dest->count = preheader->count; LOOP_VINFO_SCALAR_LOOP_SCALING (loop_vinfo) = (prob * prob2).invert (); nloop = scalar_loop; |