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• Elim-supplies

Vl-module-elim-supplies

Signature

(vl-module-elim-supplies x) → new-x

Arguments

x — Guard (vl-module-p x).

Returns

new-x — Type (vl-module-p new-x).

Definitions and Theorems

Function: vl-module-elim-supplies

(defun vl-module-elim-supplies (x)
 (declare (xargs :guard (vl-module-p x)))
 (let ((__function__ 'vl-module-elim-supplies))
  (declare (ignorable __function__))
  (b*
   (((vl-module x) (vl-module-fix x))
    ((when (vl-module->hands-offp x)) x)
    (palist (vl-make-portdecl-alist x.portdecls))
    ((mv warnings new-decls supply0s supply1s)
     (vl-collect-supplies x.vardecls
                          x.portdecls palist x.warnings))
    (- (fast-alist-free palist))
    ((when (and (not supply0s)
                (not supply1s)
                (equal warnings x.warnings)))
     x)
    (x (change-vl-module x
                         :vardecls new-decls
                         :warnings warnings))
    (zeroes
     (replicate
        (length supply0s)
        (make-vl-atom :guts (make-vl-constint :origwidth 1
                                              :origtype :vl-unsigned
                                              :value 0)
                      :finalwidth 1
                      :finaltype :vl-unsigned)))
    (ones
     (replicate
        (length supply1s)
        (make-vl-atom :guts (make-vl-constint :origwidth 1
                                              :origtype :vl-unsigned
                                              :value 1)
                      :finalwidth 1
                      :finaltype :vl-unsigned)))
    (sigma (revappend (pairlis$ supply0s zeroes)
                      (pairlis$ supply1s ones))))
   (with-fast-alist sigma (vl-module-subst x sigma)))))

Theorem: vl-module-p-of-vl-module-elim-supplies

(defthm vl-module-p-of-vl-module-elim-supplies
  (b* ((new-x (vl-module-elim-supplies x)))
    (vl-module-p new-x))
  :rule-classes :rewrite)

Theorem: vl-module-elim-supplies-of-vl-module-fix-x

(defthm vl-module-elim-supplies-of-vl-module-fix-x
  (equal (vl-module-elim-supplies (vl-module-fix x))
         (vl-module-elim-supplies x)))

Theorem: vl-module-elim-supplies-vl-module-equiv-congruence-on-x

(defthm vl-module-elim-supplies-vl-module-equiv-congruence-on-x
  (implies (vl-module-equiv x x-equiv)
           (equal (vl-module-elim-supplies x)
                  (vl-module-elim-supplies x-equiv)))
  :rule-classes :congruence)