https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90402
--- Comment #5 from Richard Biener <rguenth at gcc dot gnu.org> --- Author: rguenth Date: Mon May 13 11:37:21 2019 New Revision: 271125 URL: https://gcc.gnu.org/viewcvs?rev=271125&root=gcc&view=rev Log: 2019-05-13 Richard Biener <rguent...@suse.de> PR tree-optimization/90402 * tree-if-conv.c (tree_if_conversion): Value number only the loop body by making the latch an exit of the region as well. * tree-ssa-sccvn.c (process_bb): Add flag whether to skip processing PHIs. (do_rpo_vn): Deal with multiple edges into the entry block that are not backedges inside the region by skipping PHIs of the entry block. * gcc.dg/torture/pr90402-1.c: New testcase. Added: trunk/gcc/testsuite/gcc.dg/torture/pr90402-1.c Modified: trunk/gcc/ChangeLog trunk/gcc/testsuite/ChangeLog trunk/gcc/tree-if-conv.c trunk/gcc/tree-ssa-sccvn.c