re PR tree-optimization/32698 (inefficient pointer expression)

2007-07-09  Richard Guenther  <rguenther@suse.de>

	PR middle-end/32698
	* fold-const.c (fold_plusminus_mult_expr): Move constant
	arguments second to allow decomposing.

From-SVN: r126494

gcc/ChangeLog

+2007-07-09  Richard Guenther  <rguenther@suse.de>
+
+	PR middle-end/32698
+	* fold-const.c (fold_plusminus_mult_expr): Move constant
+	arguments second to allow decomposing.
+
 2007-07-09  Alexandre Oliva  <aoliva@oliva.athome.lsd.ic.unicamp.br>
 
 	Revert:

gcc/fold-const.c

@@ -7122,6 +7122,11 @@ fold_plusminus_mult_expr (enum tree_code code, tree type, tree arg0, tree arg1)
       arg00 = TREE_OPERAND (arg0, 0);
       arg01 = TREE_OPERAND (arg0, 1);
     }
+  else if (TREE_CODE (arg0) == INTEGER_CST)
+    {
+      arg00 = build_one_cst (type);
+      arg01 = arg0;
+    }
   else
     {
       arg00 = arg0;
@@ -7132,6 +7137,11 @@ fold_plusminus_mult_expr (enum tree_code code, tree type, tree arg0, tree arg1)
       arg10 = TREE_OPERAND (arg1, 0);
       arg11 = TREE_OPERAND (arg1, 1);
     }
+  else if (TREE_CODE (arg1) == INTEGER_CST)
+    {
+      arg10 = build_one_cst (type);
+      arg11 = arg1;
+    }
   else
     {
       arg10 = arg1;