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• Delayredux

Vl-gatearg-delayredux

Signature

(vl-gatearg-delayredux delaymod x loc delta) 
  → 
(mv new-x delta)

Arguments

delaymod — A VL_1_BIT_DELAY_N module.
    Guard (vl-module-p delaymod).

x — Gate instance argument to rewrite.
    Guard (and (vl-plainarg-p x) (vl-gatearg-ok-for-delayredux-p x)).

loc — Guard (vl-location-p loc).

delta — Guard (vl-delta-p delta).

Returns

new-x — Type (vl-plainarg-p new-x), given the guard.

delta — Type (vl-delta-p delta), given the guard.

Definitions and Theorems

Function: vl-gatearg-delayredux

(defun vl-gatearg-delayredux (delaymod x loc delta)
 (declare
      (xargs :guard (and (vl-module-p delaymod)
                         (and (vl-plainarg-p x)
                              (vl-gatearg-ok-for-delayredux-p x))
                         (vl-location-p loc)
                         (vl-delta-p delta))))
 (let ((__function__ 'vl-gatearg-delayredux))
  (declare (ignorable __function__))
  (b*
   (((vl-plainarg x) x)
    ((unless (eq x.dir :vl-input))
     (mv x delta))
    ((unless x.expr) (mv x delta))
    ((vl-delta delta) delta)
    ((mv del-name nf)
     (vl-namefactory-indexed-name "del" delta.nf))
    ((mv mkdel-name nf)
     (vl-namefactory-indexed-name "mkdel" nf))
    ((mv del-expr del-vardecl)
     (vl-occform-mkwire del-name 1 :loc loc))
    (mkdel-inst
         (vl-simple-instantiate delaymod
                                mkdel-name (list del-expr x.expr)
                                :loc loc))
    (delta
       (change-vl-delta delta
                        :nf nf
                        :vardecls (cons del-vardecl delta.vardecls)
                        :modinsts (cons mkdel-inst delta.modinsts)))
    (new-x (change-vl-plainarg x :expr del-expr)))
   (mv new-x delta))))

Theorem: vl-plainarg-p-of-vl-gatearg-delayredux.new-x

(defthm vl-plainarg-p-of-vl-gatearg-delayredux.new-x
  (implies (and (force (vl-module-p delaymod))
                (force (if (vl-plainarg-p x)
                           (vl-gatearg-ok-for-delayredux-p$inline x)
                         'nil))
                (force (vl-location-p loc))
                (force (vl-delta-p delta)))
           (b* (((mv ?new-x ?delta)
                 (vl-gatearg-delayredux delaymod x loc delta)))
             (vl-plainarg-p new-x)))
  :rule-classes :rewrite)

Theorem: vl-delta-p-of-vl-gatearg-delayredux.delta

(defthm vl-delta-p-of-vl-gatearg-delayredux.delta
  (implies (and (force (vl-module-p delaymod))
                (force (if (vl-plainarg-p x)
                           (vl-gatearg-ok-for-delayredux-p$inline x)
                         'nil))
                (force (vl-location-p loc))
                (force (vl-delta-p delta)))
           (b* (((mv ?new-x ?delta)
                 (vl-gatearg-delayredux delaymod x loc delta)))
             (vl-delta-p delta)))
  :rule-classes :rewrite)