http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55107
--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> 2012-12-10 14:00:39 UTC --- Author: rguenth Date: Mon Dec 10 14:00:25 2012 New Revision: 194358 URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=194358 Log: 2012-12-10 Richard Biener <rguent...@suse.de> PR tree-optimization/55107 * tree-ssa-pre.c (struct pre_stats): Remove constified field. (bitmap_set_replace_value): Add gcc_unreachable. (do_regular_insertion): Re-write all_same handling. Insert an assignment instead of a PHI in this case. (eliminate_bb): Record availability also for SSA names defined by a constant. (do_pre): Do not record constified events. (execute_fre): Likewise. * gcc.dg/torture/pr55107.c: New testcase. * gcc.dg/tree-ssa/ssa-pre-5.c: Adjust. Added: trunk/gcc/testsuite/gcc.dg/torture/pr55107.c Modified: trunk/gcc/ChangeLog trunk/gcc/testsuite/ChangeLog trunk/gcc/testsuite/gcc.dg/tree-ssa/ssa-pre-5.c trunk/gcc/tree-ssa-pre.c
