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PR tree-optimization/42906
[pf3gnuchains/gcc-fork.git] / gcc / ChangeLog
index 77af22c..a05b595 100644 (file)
@@ -1,3 +1,13 @@
+2010-04-06  Jan Hubicka  <jh@suse.czpli
+
+       PR tree-optimization/42906
+
+       * tree-ssa-dce.c (mark_control_dependent_edges_necessary): Add IGNORE_SELF
+       argument; set visited_control_parents for fully processed BBs.
+       (find_obviously_necessary_stmts): Update call of
+       mark_control_dependent_edges_necessary.
+       (propagate_necessity): Likewise; handle PHI edges more curefully.
+
 2010-04-06  Uros Bizjak  <ubizjak@gmail.com>
 
        * config/i386/i386.md: Remove comment about 'e' and 'E'
 2010-04-06  Uros Bizjak  <ubizjak@gmail.com>
 
        * config/i386/i386.md: Remove comment about 'e' and 'E'