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• Vl-consteval

Vl-consteval-$bits

Signature

(vl-consteval-$bits x orig ss) → (mv successp ans)

Arguments

x — the expression inside the $bits call.
    Guard (vl-expr-p x).

orig — the $bits call itself.
    Guard (vl-expr-p orig).

ss — Guard (vl-scopestack-p ss).

Returns

successp — Type (booleanp successp).

ans — Type (vl-expr-p ans).

Definitions and Theorems

Function: vl-consteval-$bits

(defun vl-consteval-$bits (x orig ss)
 (declare (xargs :guard (and (vl-expr-p x)
                             (vl-expr-p orig)
                             (vl-scopestack-p ss))))
 (declare (xargs :guard (vl-unary-syscall-p "$bits" orig)))
 (let ((__function__ 'vl-consteval-$bits))
  (declare (ignorable __function__))
  (b*
   ((orig (vl-expr-fix orig))
    (orig.finalwidth (vl-expr->finalwidth orig))
    (orig.finaltype (vl-expr->finaltype orig))
    ((unless (and (posp orig.finalwidth)
                  orig.finaltype))
     (mv nil orig))
    ((unless (and (vl-atom-p x)
                  (member (tag (vl-atom->guts x))
                          '(:vl-basictype :vl-typename))))
     (b* (((mv & arg-width)
           (vl-expr-selfsize x ss
                             *vl-fake-elem-for-vl-consteval* nil)))
       (if arg-width
           (mv t
               (vl-consteval-ans
                    :value (acl2::loghead orig.finalwidth arg-width)
                    :width orig.finalwidth
                    :type orig.finaltype))
         (mv nil orig))))
    (typeguts (vl-atom->guts x))
    ((mv ok res)
     (if (eq (tag typeguts) :vl-typename)
         (vl-consteval-usertype-bits (vl-typename->name typeguts)
                                     ss)
       (vl-consteval-basictype-bits typeguts))))
   (if ok
    (mv ok
        (vl-consteval-ans :value (acl2::loghead orig.finalwidth res)
                          :width orig.finalwidth
                          :type orig.finaltype))
    (mv nil orig)))))

Theorem: booleanp-of-vl-consteval-$bits.successp

(defthm booleanp-of-vl-consteval-$bits.successp
  (b* (((mv ?successp ?ans)
        (vl-consteval-$bits x orig ss)))
    (booleanp successp))
  :rule-classes :type-prescription)

Theorem: vl-expr-p-of-vl-consteval-$bits.ans

(defthm vl-expr-p-of-vl-consteval-$bits.ans
  (b* (((mv ?successp ?ans)
        (vl-consteval-$bits x orig ss)))
    (vl-expr-p ans))
  :rule-classes :rewrite)

Theorem: vl-expr-welltyped-p-of-vl-consteval-$bits

(defthm vl-expr-welltyped-p-of-vl-consteval-$bits
  (implies (vl-expr-welltyped-p orig)
           (b* (((mv ?successp ?ans)
                 (vl-consteval-$bits x orig ss)))
             (vl-expr-welltyped-p ans)))
  :rule-classes :rewrite)

Theorem: vl-expr->finalwidth-of-vl-consteval-$bits

(defthm vl-expr->finalwidth-of-vl-consteval-$bits
  (b* (((mv ?successp ?ans)
        (vl-consteval-$bits x orig ss)))
    (equal (vl-expr->finalwidth ans)
           (vl-expr->finalwidth orig)))
  :rule-classes :rewrite)

Theorem: vl-expr->finaltype-of-vl-consteval-$bits

(defthm vl-expr->finaltype-of-vl-consteval-$bits
  (b* (((mv ?successp ?ans)
        (vl-consteval-$bits x orig ss)))
    (equal (vl-expr->finaltype ans)
           (vl-expr->finaltype orig)))
  :rule-classes :rewrite)

Theorem: vl-expr-resolved-p-of-vl-consteval-$bits

(defthm vl-expr-resolved-p-of-vl-consteval-$bits
  (b* (((mv ?successp ?ans)
        (vl-consteval-$bits x orig ss)))
    (implies successp (vl-expr-resolved-p ans)))
  :rule-classes :rewrite)

Theorem: vl-consteval-$bits-of-vl-expr-fix-x

(defthm vl-consteval-$bits-of-vl-expr-fix-x
  (equal (vl-consteval-$bits (vl-expr-fix x)
                             orig ss)
         (vl-consteval-$bits x orig ss)))

Theorem: vl-consteval-$bits-vl-expr-equiv-congruence-on-x

(defthm vl-consteval-$bits-vl-expr-equiv-congruence-on-x
  (implies (vl-expr-equiv x x-equiv)
           (equal (vl-consteval-$bits x orig ss)
                  (vl-consteval-$bits x-equiv orig ss)))
  :rule-classes :congruence)

Theorem: vl-consteval-$bits-of-vl-expr-fix-orig

(defthm vl-consteval-$bits-of-vl-expr-fix-orig
  (equal (vl-consteval-$bits x (vl-expr-fix orig)
                             ss)
         (vl-consteval-$bits x orig ss)))

Theorem: vl-consteval-$bits-vl-expr-equiv-congruence-on-orig

(defthm vl-consteval-$bits-vl-expr-equiv-congruence-on-orig
  (implies (vl-expr-equiv orig orig-equiv)
           (equal (vl-consteval-$bits x orig ss)
                  (vl-consteval-$bits x orig-equiv ss)))
  :rule-classes :congruence)

Theorem: vl-consteval-$bits-of-vl-scopestack-fix-ss

(defthm vl-consteval-$bits-of-vl-scopestack-fix-ss
  (equal (vl-consteval-$bits x orig (vl-scopestack-fix ss))
         (vl-consteval-$bits x orig ss)))

Theorem: vl-consteval-$bits-vl-scopestack-equiv-congruence-on-ss

(defthm vl-consteval-$bits-vl-scopestack-equiv-congruence-on-ss
  (implies (vl-scopestack-equiv ss ss-equiv)
           (equal (vl-consteval-$bits x orig ss)
                  (vl-consteval-$bits x orig ss-equiv)))
  :rule-classes :congruence)