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Expr-simp

Vl-plainarg-simp

Signature
(vl-plainarg-simp x) → new-x
Arguments: x — Guard (vl-plainarg-p x).
Returns: new-x — Type (vl-plainarg-p new-x).

Definitions and Theorems

Function: vl-plainarg-simp

(defun vl-plainarg-simp (x)
  (declare (xargs :guard (vl-plainarg-p x)))
  (let ((__function__ 'vl-plainarg-simp))
    (declare (ignorable __function__))
    (b* ((x (vl-plainarg-fix x))
         ((vl-plainarg x) x)
         ((unless (eq x.dir :vl-input)) x)
         ((unless x.expr) x))
      (change-vl-plainarg x
                          :expr (vl-expr-simp x.expr)))))

Theorem: vl-plainarg-p-of-vl-plainarg-simp

(defthm vl-plainarg-p-of-vl-plainarg-simp
  (b* ((new-x (vl-plainarg-simp x)))
    (vl-plainarg-p new-x))
  :rule-classes :rewrite)

Theorem: vl-plainarg-simp-of-vl-plainarg-fix-x

(defthm vl-plainarg-simp-of-vl-plainarg-fix-x
  (equal (vl-plainarg-simp (vl-plainarg-fix x))
         (vl-plainarg-simp x)))

Theorem: vl-plainarg-simp-vl-plainarg-equiv-congruence-on-x

(defthm vl-plainarg-simp-vl-plainarg-equiv-congruence-on-x
  (implies (vl-plainarg-equiv x x-equiv)
           (equal (vl-plainarg-simp x)
                  (vl-plainarg-simp x-equiv)))
  :rule-classes :congruence)