[Bug tree-optimization/59299] We do not sink loads

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=59299

--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Fri Jun  6 15:31:47 2014
New Revision: 211317

URL: http://gcc.gnu.org/viewcvs?rev=211317&root=gcc&view=rev
Log:
2014-06-06  Richard Biener  <rguenther@suse.de>

    PR tree-optimization/59299
    * tree-ssa-sink.c (all_immediate_uses_same_place): Work on
    a def operand.
    (nearest_common_dominator_of_uses): Likewise.
    (statement_sink_location): Adjust.  Support sinking loads.

    * gcc.dg/tree-ssa/ssa-sink-10.c: New testcase.

Added:
    trunk/gcc/testsuite/gcc.dg/tree-ssa/ssa-sink-10.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-ssa-sink.c