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Range-tools

Vl-range-resolved-p

Determine if a range's indices have been resolved to constants.

Signature
(vl-range-resolved-p x) → *
Arguments: x — Guard (vl-range-p x).

Historically we required x.msb >= x.lsb, but now we try to handle both cases.

Definitions and Theorems

Function: vl-range-resolved-p

(defun vl-range-resolved-p (x)
  (declare (xargs :guard (vl-range-p x)))
  (let ((__function__ 'vl-range-resolved-p))
    (declare (ignorable __function__))
    (b* (((vl-range x) x))
      (and (vl-expr-resolved-p x.msb)
           (vl-expr-resolved-p x.lsb)))))

Theorem: vl-expr-resolved-p-of-vl-range->msb-when-vl-range-resolved-p

(defthm vl-expr-resolved-p-of-vl-range->msb-when-vl-range-resolved-p
  (implies (vl-range-resolved-p x)
           (vl-expr-resolved-p (vl-range->msb x))))

Theorem: vl-expr-resolved-p-of-vl-range->lsb-when-vl-range-resolved-p

(defthm vl-expr-resolved-p-of-vl-range->lsb-when-vl-range-resolved-p
  (implies (vl-range-resolved-p x)
           (vl-expr-resolved-p (vl-range->lsb x))))

Theorem: vl-range-resolved-p-of-vl-range-fix-x

(defthm vl-range-resolved-p-of-vl-range-fix-x
  (equal (vl-range-resolved-p (vl-range-fix x))
         (vl-range-resolved-p x)))

Theorem: vl-range-resolved-p-vl-range-equiv-congruence-on-x

(defthm vl-range-resolved-p-vl-range-equiv-congruence-on-x
  (implies (vl-range-equiv x x-equiv)
           (equal (vl-range-resolved-p x)
                  (vl-range-resolved-p x-equiv)))
  :rule-classes :congruence)