[Bug tree-optimization/46886] [4.5/4.6 Regression] wrong code with -ftree-parallelize-loops -fno-tree-ch

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46886

--- Comment #12 from Richard Guenther <rguenth at gcc dot gnu.org> 2012-02-15 11:05:31 UTC ---
Author: rguenth
Date: Wed Feb 15 11:05:26 2012
New Revision: 184263

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=184263
Log:
2012-02-15  Richard Guenther  <rguenther@suse.de>

    Backport from mainline
    2012-02-08  Richard Guenther  <rguenther@suse.de>

    PR tree-optimization/46886
    * tree-flow.h (do_while_loop_p): Declare.
    * tree-ssa-loop-ch.c (do_while_loop_p): Export.
    * tree-parloops.c (parallelize_loops): Only parallelize do-while
    loops.

    * testsuite/libgomp.c/pr46886.c: New testcase.

Added:
    branches/gcc-4_6-branch/libgomp/testsuite/libgomp.c/pr46886.c
Modified:
    branches/gcc-4_6-branch/gcc/ChangeLog
    branches/gcc-4_6-branch/gcc/tree-flow.h
    branches/gcc-4_6-branch/gcc/tree-parloops.c
    branches/gcc-4_6-branch/gcc/tree-ssa-loop-ch.c
    branches/gcc-4_6-branch/libgomp/ChangeLog