* tree-ssa-ccp.c (fold_const_aggregate_ref): Handle MEM_REF
as base of ARRAY_REFs.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@162175
138bc75d-0d04-0410-961f-
82ee72b054a4
2010-07-14 Richard Guenther <rguenther@suse.de>
+ * tree-ssa-ccp.c (fold_const_aggregate_ref): Handle MEM_REF
+ as base of ARRAY_REFs.
+
+2010-07-14 Richard Guenther <rguenther@suse.de>
+
PR middle-end/44930
* tree-pretty-print.c (do_niy): Do not print a newline.
base = TREE_OPERAND (t, 0);
switch (TREE_CODE (base))
{
+ case MEM_REF:
+ /* ??? We could handle this case. */
+ if (!integer_zerop (TREE_OPERAND (base, 1)))
+ return NULL_TREE;
+ base = get_base_address (base);
+ if (!base
+ || TREE_CODE (base) != VAR_DECL)
+ return NULL_TREE;
+
+ /* Fallthru. */
case VAR_DECL:
if (!TREE_READONLY (base)
|| TREE_CODE (TREE_TYPE (base)) != ARRAY_TYPE