fold-const.c (operand_equal_p): Don't check for TREE_CONSTANT_OVERFLOW when comparing constants.

	* fold-const.c (operand_equal_p) <INTEGER_CST, REAL_CST, VECTOR_CST>:
	Don't check for TREE_CONSTANT_OVERFLOW when comparing constants.

From-SVN: r118685

gcc/ChangeLog

+2006-11-10  Roger Sayle  <roger@eyesopen.com>
+
+	* fold-const.c (operand_equal_p) <INTEGER_CST, REAL_CST, VECTOR_CST>:
+	Don't check for TREE_CONSTANT_OVERFLOW when comparing constants.
+
 2006-11-10  Peter Bergner  <bergner@vnet.ibm.com>
 
 	* rtl.h (MEM_COPY_ATTRIBUTES): Copy MEM_POINTER.

gcc/fold-const.c

@@ -2545,24 +2545,16 @@ operand_equal_p (tree arg0, tree arg1, unsigned int flags)
     switch (TREE_CODE (arg0))
       {
       case INTEGER_CST:
-	return (! TREE_CONSTANT_OVERFLOW (arg0)
-		&& ! TREE_CONSTANT_OVERFLOW (arg1)
-		&& tree_int_cst_equal (arg0, arg1));
+	return tree_int_cst_equal (arg0, arg1);
 
       case REAL_CST:
-	return (! TREE_CONSTANT_OVERFLOW (arg0)
-		&& ! TREE_CONSTANT_OVERFLOW (arg1)
-		&& REAL_VALUES_IDENTICAL (TREE_REAL_CST (arg0),
-					  TREE_REAL_CST (arg1)));
+	return REAL_VALUES_IDENTICAL (TREE_REAL_CST (arg0),
+				      TREE_REAL_CST (arg1));
 
       case VECTOR_CST:
 	{
 	  tree v1, v2;
 
-	  if (TREE_CONSTANT_OVERFLOW (arg0)
-	      || TREE_CONSTANT_OVERFLOW (arg1))
-	    return 0;
-
 	  v1 = TREE_VECTOR_CST_ELTS (arg0);
 	  v2 = TREE_VECTOR_CST_ELTS (arg1);
 	  while (v1 && v2)