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• Expression-optimization

Vl-gateinst-optimize

Optimize expressions throughout a vl-gateinst-p.

Signature

(vl-gateinst-optimize x ss) → (mv changedp new-x)

Arguments

x — Guard (vl-gateinst-p x).

ss — Guard (vl-scopestack-p ss).

Returns

changedp — Type (booleanp changedp).

new-x — Type (vl-gateinst-p new-x).

Definitions and Theorems

Function: vl-gateinst-optimize

(defun vl-gateinst-optimize (x ss)
  (declare (xargs :guard (and (vl-gateinst-p x)
                              (vl-scopestack-p ss))))
  (let ((__function__ 'vl-gateinst-optimize))
    (declare (ignorable __function__))
    (b* ((x (vl-gateinst-fix x)))
      (b* (((mv changedp args-prime)
            (vl-plainarglist-optimize (vl-gateinst->args x)
                                      ss))
           ((unless changedp) (mv nil x)))
        (mv t
            (change-vl-gateinst x
                                :args args-prime))))))

Theorem: booleanp-of-vl-gateinst-optimize.changedp

(defthm booleanp-of-vl-gateinst-optimize.changedp
  (b* (((mv ?changedp ?new-x)
        (vl-gateinst-optimize x ss)))
    (booleanp changedp))
  :rule-classes :type-prescription)

Theorem: vl-gateinst-p-of-vl-gateinst-optimize.new-x

(defthm vl-gateinst-p-of-vl-gateinst-optimize.new-x
  (b* (((mv ?changedp ?new-x)
        (vl-gateinst-optimize x ss)))
    (vl-gateinst-p new-x))
  :rule-classes :rewrite)

Theorem: vl-gateinst-optimize-of-vl-gateinst-fix-x

(defthm vl-gateinst-optimize-of-vl-gateinst-fix-x
  (equal (vl-gateinst-optimize (vl-gateinst-fix x)
                               ss)
         (vl-gateinst-optimize x ss)))

Theorem: vl-gateinst-optimize-vl-gateinst-equiv-congruence-on-x

(defthm vl-gateinst-optimize-vl-gateinst-equiv-congruence-on-x
  (implies (vl-gateinst-equiv x x-equiv)
           (equal (vl-gateinst-optimize x ss)
                  (vl-gateinst-optimize x-equiv ss)))
  :rule-classes :congruence)

Theorem: vl-gateinst-optimize-of-vl-scopestack-fix-ss

(defthm vl-gateinst-optimize-of-vl-scopestack-fix-ss
  (equal (vl-gateinst-optimize x (vl-scopestack-fix ss))
         (vl-gateinst-optimize x ss)))

Theorem: vl-gateinst-optimize-vl-scopestack-equiv-congruence-on-ss

(defthm vl-gateinst-optimize-vl-scopestack-equiv-congruence-on-ss
  (implies (vl-scopestack-equiv ss ss-equiv)
           (equal (vl-gateinst-optimize x ss)
                  (vl-gateinst-optimize x ss-equiv)))
  :rule-classes :congruence)