This fixes PR77290 - my previous patch to PRE to limit insertion
for flag_tree_parallelize_loops != 0 was confused because
flag_tree_parallelize_loops is the number of threads to parallelize
for (thus == 1 is the default and to not parallelize).
Fixed as obvious.
Richard.
2016-08-19 Richard Biener <rguent...@suse.de>
PR tree-optimization/77290
* tree-ssa-pre.c (eliminate_dom_walker::before_dom_children):
Fix flag_tree_parallelize_loops check.
Index: gcc/tree-ssa-pre.c
===================================================================
--- gcc/tree-ssa-pre.c (revision 239606)
+++ gcc/tree-ssa-pre.c (working copy)
@@ -4270,7 +4270,7 @@ eliminate_dom_walker::before_dom_childre
if (sprime
&& TREE_CODE (sprime) == SSA_NAME
&& do_pre
- && (flag_tree_loop_vectorize || flag_tree_parallelize_loops)
+ && (flag_tree_loop_vectorize || flag_tree_parallelize_loops > 1)
&& loop_outer (b->loop_father)
&& has_zero_uses (sprime)
&& bitmap_bit_p (inserted_exprs, SSA_NAME_VERSION (sprime))
