https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67975
--- Comment #7 from Richard Biener <rguenth at gcc dot gnu.org> --- Author: rguenth Date: Mon Oct 19 14:00:28 2015 New Revision: 228971 URL: https://gcc.gnu.org/viewcvs?rev=228971&root=gcc&view=rev Log: 2015-10-19 Richard Biener <rguent...@suse.de> PR tree-optimization/67975 * tree-cfg.h (extract_true_false_controlled_edges): Declare. * tree-cfg.c (extract_true_false_controlled_edges): Split out core worker from ... * tree-ssa-loop-im.c (extract_true_false_args_from_phi): ... here. * tree-ssa-sccvn.c (vn_phi_compute_hash): Hash number of args instead of block number for PHIs with two or one args. (vn_phi_eq): Compare edge predicates of PHIs that are in different blocks. * gcc.dg/tree-ssa/ssa-fre-50.c: New testcase. Added: trunk/gcc/testsuite/gcc.dg/tree-ssa/ssa-fre-50.c Modified: trunk/gcc/ChangeLog trunk/gcc/testsuite/ChangeLog trunk/gcc/tree-cfg.c trunk/gcc/tree-cfg.h trunk/gcc/tree-ssa-loop-im.c trunk/gcc/tree-ssa-sccvn.c