https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71335
--- Comment #5 from Jeffrey A. Law <law at gcc dot gnu.org> --- Author: law Date: Fri Jun 10 16:23:06 2016 New Revision: 237312 URL: https://gcc.gnu.org/viewcvs?rev=237312&root=gcc&view=rev Log: PR tree-optimization/71335 * tree-ssa-threadbackward.c (profitable_jump_thread_path): Filter out zero length paths here. (convert_and_register_jump_thread_path): Remove hacks related to duplicated blocks in the jump thread path. (fsm_find_control_statement_thread_paths): Avoid putting the same block on the thread path twice, but ensure the thread path is unchanged from the caller's point of view. PR tree-optimization/71335 * gcc.c-torture/execute/pr71335.c: New test. Added: trunk/gcc/testsuite/gcc.c-torture/execute/pr71335.c Modified: trunk/gcc/ChangeLog trunk/gcc/testsuite/ChangeLog trunk/gcc/tree-ssa-threadbackward.c
