/* "{a, +, b} (x)" -> "a + b*x". */
x = chrec_convert_rhs (type, x, NULL);
res = chrec_fold_multiply (TREE_TYPE (x), CHREC_RIGHT (chrec), x);
- if (!integer_zerop (CHREC_LEFT (chrec)))
- res = chrec_fold_plus (type, CHREC_LEFT (chrec), res);
+ res = chrec_fold_plus (type, CHREC_LEFT (chrec), res);
}
else if (TREE_CODE (chrec) != POLYNOMIAL_CHREC)
else
return EV_DIR_GROWS;
}
+
+/* Iterates over all the components of SCEV, and calls CBCK. */
+
+void
+for_each_scev_op (tree *scev, bool (*cbck) (tree *, void *), void *data)
+{
+ switch (TREE_CODE_LENGTH (TREE_CODE (*scev)))
+ {
+ case 3:
+ for_each_scev_op (&TREE_OPERAND (*scev, 2), cbck, data);
+
+ case 2:
+ for_each_scev_op (&TREE_OPERAND (*scev, 1), cbck, data);
+
+ case 1:
+ for_each_scev_op (&TREE_OPERAND (*scev, 0), cbck, data);
+
+ default:
+ cbck (scev, data);
+ break;
+ }
+}
+