[Bug tree-optimization/58553] New fail in PASS->FAIL: gcc.c-torture/execute/memcpy-2.c execution on arm and aarch64

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58553

--- Comment #10 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Tue Oct  1 07:41:10 2013
New Revision: 203054

URL: http://gcc.gnu.org/viewcvs?rev=203054&root=gcc&view=rev
Log:
2013-10-01  Richard Biener  <rguenther@suse.de>

    PR tree-optimization/58553
    * tree-loop-distribution.c (struct partition_s): Add niter member.
    (classify_partition): Populate niter member for the partition
    and properly identify whether the relevant store happens before
    or after the loop exit.
    (generate_memset_builtin): Use niter member from the partition.
    (generate_memcpy_builtin): Likewise.

    * gcc.dg/torture/pr58553.c: New testcase.

Added:
    trunk/gcc/testsuite/gcc.dg/torture/pr58553.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-loop-distribution.c