re PR middle-end/52329 (Invalid MEM_REF encountered in set_mem_attributes_minus_bitpos)

2012-02-22  Richard Guenther  <rguenther@suse.de>

	PR middle-end/52329
	* gimple-fold.c (fold_stmt_1): Also canonicalize ADDR_EXPRs
	for GIMPLE_DEBUG stmts.

From-SVN: r184466

gcc/ChangeLog

+2012-02-22  Richard Guenther  <rguenther@suse.de>
+
+	PR middle-end/52329
+	* gimple-fold.c (fold_stmt_1): Also canonicalize ADDR_EXPRs
+	for GIMPLE_DEBUG stmts.
+ 
 2012-02-22  Martin Jambor  <mjambor@suse.cz>
 
 	PR middle-end/51782

gcc/gimple-fold.c

@@ -1250,6 +1250,18 @@ fold_stmt_1 (gimple_stmt_iterator *gsi, bool inplace)
 		  changed = true;
 		}
 	    }
+	  else if (val
+		   && TREE_CODE (val) == ADDR_EXPR)
+	    {
+	      tree ref = TREE_OPERAND (val, 0);
+	      tree tem = maybe_fold_reference (ref, false);
+	      if (tem)
+		{
+		  tem = build_fold_addr_expr_with_type (tem, TREE_TYPE (val));
+		  gimple_debug_bind_set_value (stmt, tem);
+		  changed = true;
+		}
+	    }
 	}
       break;