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Expression-optimization

Vl-namedarg-optimize

Optimize expressions throughout a vl-namedarg-p.

Signature
(vl-namedarg-optimize x ss) → (mv changedp new-x)
Arguments: x — Guard (vl-namedarg-p x).; ss — Guard (vl-scopestack-p ss).
Returns: changedp — Type (booleanp changedp).; new-x — Type (vl-namedarg-p new-x).

Definitions and Theorems

Function: vl-namedarg-optimize

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

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

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

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

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

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

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

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

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

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

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

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

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