[Bug tree-optimization/57122] [4.9 Regression] ICE in verify_loop_structure, at cfgloop.c:1647 (loop n’s latch does not have an edge to its header !)

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57122



Richard Biener <rguenth at gcc dot gnu.org> changed:



           What    |Removed                     |Added

----------------------------------------------------------------------------

             Status|ASSIGNED                    |RESOLVED

         Resolution|                            |FIXED



--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> 2013-04-30 
15:04:20 UTC ---

Author: rguenth

Date: Tue Apr 30 15:03:58 2013

New Revision: 198456



URL: http://gcc.gnu.org/viewcvs?rev=198456&root=gcc&view=rev

Log:

2013-04-30  Richard Biener  <rguent...@suse.de>



    PR middle-end/57122

    * cfghooks.c (split_edge): Properly check for the loop

    latch edge.



    * gcc.dg/torture/pr57122.c: New testcase.



Added:

    trunk/gcc/testsuite/gcc.dg/torture/pr57122.c

Modified:

    trunk/gcc/ChangeLog

    trunk/gcc/cfghooks.c

    trunk/gcc/testsuite/ChangeLog