2013-08-27 Richard Biener <rguenther@suse.de>
PR tree-optimization/57521
* tree-if-conv.c (if_convertible_bb_p): Verify that at least
one edge is non-critical.
(find_phi_replacement_condition): Make sure to use a non-critical
edge. Cleanup and remove old bug workarounds.
(bb_postdominates_preds): Remove.
(if_convertible_loop_p_1): Do not compute post-dominators.
(combine_blocks): Do not free post-dominators.
(main_tree_if_conversion): Likewise.
(pass_data_if_conversion): Add TODO_verify_ssa.
* gcc.dg/torture/pr57521.c: New testcase.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@202019
138bc75d-0d04-0410-961f-
82ee72b054a4