https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68198
--- Comment #9 from Jeffrey A. Law <law at gcc dot gnu.org> --- Author: law Date: Thu Nov 19 00:33:27 2015 New Revision: 230586 URL: https://gcc.gnu.org/viewcvs?rev=230586&root=gcc&view=rev Log: [PATCH][PR tree-optimization/68198] Avoid CFG explosion due to threading PR tree-optimization/68198 * tree-ssa-threadupdate.c (valid_jump_thread_path): Distinguish between threading a multi-way branch and a thread path that contains a multi-way branch. Disallow the case where a path contains a multi-way branch and does not thread a multi-way branch. (thread_through_all_blocks): Update comment. PR tree-optimization/68198 * gcc.dg/tree-ssa/pr66752-3.c: Update expected output for VRP1. * gcc.dg/tree-ssa/pr68198.c: New test. Added: trunk/gcc/testsuite/gcc.dg/tree-ssa/pr68198.c Modified: trunk/gcc/ChangeLog trunk/gcc/testsuite/ChangeLog trunk/gcc/testsuite/gcc.dg/tree-ssa/pr66752-3.c trunk/gcc/tree-ssa-threadupdate.c
