r197769 - in /trunk/gcc: ChangeLog tree-flow.h ...

[rguenth@gcc.gnu.org]

Author: rguenth
Date: Thu Apr 11 11:21:18 2013
New Revision: 197769

URL: http://gcc.gnu.org/viewcvs?rev=197769&root=gcc&view=rev
Log:
2013-04-11  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/56878
	* tree-flow.h (outermost_invariant_loop_for_expr): Declare.
	* tree-ssa-loop-ivopts.c (outermost_invariant_loop_for_expr):
	New function.
	* tree-vect-data-refs.c (vect_enhance_data_refs_alignment):
	Prefer to align the DR with the most invariant base address.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/tree-flow.h
    trunk/gcc/tree-ssa-loop-ivopts.c
    trunk/gcc/tree-vect-data-refs.c