http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52756
--- Comment #8 from Richard Guenther <rguenth at gcc dot gnu.org> 2012-04-02 15:13:50 UTC --- Author: rguenth Date: Mon Apr 2 15:13:45 2012 New Revision: 186085 URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=186085 Log: 2012-04-02 Richard Guenther <rguent...@suse.de> PR tree-optimization/52756 * tree-ssa-threadupdate.c (def_split_header_continue_p): New function. (thread_through_loop_header): After threading through the loop latch remove the split part from the loop and clear further threading opportunities that would create a multiple entry loop. * gcc.dg/torture/pr52756.c: New testcase. Added: trunk/gcc/testsuite/gcc.dg/torture/pr52756.c Modified: trunk/gcc/ChangeLog trunk/gcc/testsuite/ChangeLog trunk/gcc/tree-ssa-threadupdate.c
