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r186085 - in /trunk/gcc: ChangeLog testsuite/Ch...
- From: rguenth at gcc dot gnu dot org
- To: gcc-cvs at gcc dot gnu dot org
- Date: Mon, 02 Apr 2012 15:13:46 -0000
- Subject: r186085 - in /trunk/gcc: ChangeLog testsuite/Ch...
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 <rguenther@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