+2010-01-03 Richard Guenther <rguenther@suse.de>
+
+ PR tree-optimization/42438
+ * tree-ssa-pre.c (struct bb_bitmap_sets): Add
+ contains_may_not_return_call flag.
+ (BB_MAY_NOTRETURN): New.
+ (valid_in_sets): Trapping nary operations are not valid
+ in blocks that may not return.
+ (insert_into_preds_of_block): Remove check for trapping
+ expressions.
+ (compute_avail): Compute also BB_MAY_NOTRETURN.
+
2010-01-03 Gerald Pfeifer <gerald@pfeifer.com>
* doc/invoke.texi: Add 2010 to copyright years.