diff options
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 7 | ||||
| -rw-r--r-- | gcc/tree-ssa-pre.c | 2 |
2 files changed, 8 insertions, 1 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 5d89dbb..20c5d58 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,10 @@ +2016-08-18 Richard Biener <rguenther@suse.de> + + PR tree-optimization/77282 + * tree-ssa-pre.c (eliminate_dom_walker::before_dom_children): + When doing auto-parallelizing also prevent use of PHIs that + carry dependences across loop backedges. + 2016-08-18 Tamar Christina <tamar.christina@arm.com> Ramana Radhakrishnan <ramana.radhakrishnan@arm.com> diff --git a/gcc/tree-ssa-pre.c b/gcc/tree-ssa-pre.c index 5d21c80..b1e869b 100644 --- a/gcc/tree-ssa-pre.c +++ b/gcc/tree-ssa-pre.c @@ -4270,7 +4270,7 @@ eliminate_dom_walker::before_dom_children (basic_block b) if (sprime && TREE_CODE (sprime) == SSA_NAME && do_pre - && flag_tree_loop_vectorize + && (flag_tree_loop_vectorize || flag_tree_parallelize_loops) && loop_outer (b->loop_father) && has_zero_uses (sprime) && bitmap_bit_p (inserted_exprs, SSA_NAME_VERSION (sprime)) |