2011-07-31 Tom de Vries <tom@codesourcery.com>

	PR middle-end/43513
	* tree-ssa-loop-ivopts.c (may_be_unaligned_p): Use max of
	get_object_alignment and TYPE_ALIGN.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@176969 138bc75d-0d04-0410-961f-82ee72b054a4

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 99968b3..5e64d3e 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2011-07-31  Tom de Vries  <tom@codesourcery.com>
+
+       PR middle-end/43513
+       * tree-ssa-loop-ivopts.c (may_be_unaligned_p): Use max of
+       get_object_alignment and TYPE_ALIGN.
+
 2011-07-30  Tom de Vries  <tom@codesourcery.com>
 
        PR middle-end/43513

diff --git a/gcc/tree-ssa-loop-ivopts.c b/gcc/tree-ssa-loop-ivopts.c
index 4d4b67a..cc9b2dd 100644 (file)
--- a/gcc/tree-ssa-loop-ivopts.c
+++ b/gcc/tree-ssa-loop-ivopts.c
@@ -1635,7 +1635,8 @@ may_be_unaligned_p (tree ref, tree step)
   base = get_inner_reference (ref, &bitsize, &bitpos, &toffset, &mode,
                              &unsignedp, &volatilep, true);
   base_type = TREE_TYPE (base);
-  base_align = TYPE_ALIGN (base_type);
+  base_align = get_object_alignment (base, BIGGEST_ALIGNMENT);
+  base_align = MAX (base_align, TYPE_ALIGN (base_type));
 
   if (mode != BLKmode)
     {