https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64823
--- Comment #6 from Jeffrey A. Law <law at gcc dot gnu.org> --- Author: law Date: Fri Feb 13 21:09:58 2015 New Revision: 220696 URL: https://gcc.gnu.org/viewcvs?rev=220696&root=gcc&view=rev Log: PR tree-optimization/64823 * tree-vrp.c (identify_jump_threads): Handle blocks with no statements. * tree-ssa-threadedge.c (potentially_threadable_block): Allow threading through blocks with PHIs, but no statements. (thread_through_normal_block): Distinguish between blocks where we did not process all the statements and blocks with no statements. PR tree-optimization/64823 gcc.dg/uninit-20.c: New test. Added: trunk/gcc/testsuite/gcc.dg/uninit-20.c Modified: trunk/gcc/ChangeLog trunk/gcc/testsuite/ChangeLog trunk/gcc/tree-ssa-threadedge.c trunk/gcc/tree-vrp.c
