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• Vl-expr-wildelim

Vl-wildeq-rewrite-main

Signature

(vl-wildeq-rewrite-main x ctx warnings) 
  → 
(mv new-warnings new-x)

Arguments

x — Guard (vl-expr-p x).

ctx — Guard (vl-context-p ctx).

warnings — Guard (vl-warninglist-p warnings).

Returns

new-warnings — Type (vl-warninglist-p new-warnings).

new-x — Type (vl-expr-p new-x).

Definitions and Theorems

Function: vl-wildeq-rewrite-main

(defun vl-wildeq-rewrite-main (x ctx warnings)
 (declare (xargs :guard (and (vl-expr-p x)
                             (vl-context-p ctx)
                             (vl-warninglist-p warnings))))
 (declare (xargs :guard (and (not (vl-atom-p x))
                             (or (eq (vl-nonatom->op x)
                                     :vl-binary-wildeq)
                                 (eq (vl-nonatom->op x)
                                     :vl-binary-wildneq)))))
 (let ((__function__ 'vl-wildeq-rewrite-main))
  (declare (ignorable __function__))
  (b*
   ((x (vl-expr-fix x))
    (ctx (vl-context-fix ctx))
    ((unless (vl-expr-welltyped-p x))
     (mv
      (warn
       :type :vl-wildeq-fail
       :msg
       "~a0: failing to simplify wildcard equality operator ~
                        because it is not well-typed: ~a1."
       :args (list ctx x))
      x))
    ((vl-nonatom x) x)
    ((list lhs rhs) x.args)
    ((mv okp care-mask zap-expr)
     (vl-wildeq-decompose-rhs rhs))
    ((unless okp)
     (mv
      (warn
       :type :vl-wildeq-fail
       :msg
       "~a0: right-hand side of wildcard equality operator ~
                         is too complex; we only support constants.  ~
                         Expression: ~a1."
       :args (list ctx x))
      x))
    (new-x
     (if (eq x.op :vl-binary-wildeq)
         (vl-wildeq-replacement-expr lhs care-mask zap-expr x.atts)
      (vl-wildneq-replacement-expr lhs care-mask zap-expr x.atts))))
   (mv (ok) new-x))))

Theorem: vl-warninglist-p-of-vl-wildeq-rewrite-main.new-warnings

(defthm vl-warninglist-p-of-vl-wildeq-rewrite-main.new-warnings
  (b* (((mv ?new-warnings ?new-x)
        (vl-wildeq-rewrite-main x ctx warnings)))
    (vl-warninglist-p new-warnings))
  :rule-classes :rewrite)

Theorem: vl-expr-p-of-vl-wildeq-rewrite-main.new-x

(defthm vl-expr-p-of-vl-wildeq-rewrite-main.new-x
  (b* (((mv ?new-warnings ?new-x)
        (vl-wildeq-rewrite-main x ctx warnings)))
    (vl-expr-p new-x))
  :rule-classes :rewrite)

Theorem: vl-expr-welltyped-p-after-vl-wildeq-rewrite-main

(defthm vl-expr-welltyped-p-after-vl-wildeq-rewrite-main
  (implies (and (vl-expr-welltyped-p x)
                (not (vl-atom-p x))
                (or (eq (vl-nonatom->op x)
                        :vl-binary-wildeq)
                    (eq (vl-nonatom->op x)
                        :vl-binary-wildneq)))
           (b* (((mv ?warnings new-x)
                 (vl-wildeq-rewrite-main x ctx warnings)))
             (and (vl-expr-welltyped-p new-x)
                  (equal (vl-expr->finalwidth new-x)
                         (vl-expr->finalwidth x))
                  (equal (vl-expr->finaltype new-x)
                         (vl-expr->finaltype x))))))

Theorem: vl-wildeq-rewrite-main-of-vl-expr-fix-x

(defthm vl-wildeq-rewrite-main-of-vl-expr-fix-x
  (equal (vl-wildeq-rewrite-main (vl-expr-fix x)
                                 ctx warnings)
         (vl-wildeq-rewrite-main x ctx warnings)))

Theorem: vl-wildeq-rewrite-main-vl-expr-equiv-congruence-on-x

(defthm vl-wildeq-rewrite-main-vl-expr-equiv-congruence-on-x
  (implies (vl-expr-equiv x x-equiv)
           (equal (vl-wildeq-rewrite-main x ctx warnings)
                  (vl-wildeq-rewrite-main x-equiv ctx warnings)))
  :rule-classes :congruence)

Theorem: vl-wildeq-rewrite-main-of-vl-context-fix-ctx

(defthm vl-wildeq-rewrite-main-of-vl-context-fix-ctx
  (equal (vl-wildeq-rewrite-main x (vl-context-fix ctx)
                                 warnings)
         (vl-wildeq-rewrite-main x ctx warnings)))

Theorem: vl-wildeq-rewrite-main-vl-context-equiv-congruence-on-ctx

(defthm vl-wildeq-rewrite-main-vl-context-equiv-congruence-on-ctx
  (implies (vl-context-equiv ctx ctx-equiv)
           (equal (vl-wildeq-rewrite-main x ctx warnings)
                  (vl-wildeq-rewrite-main x ctx-equiv warnings)))
  :rule-classes :congruence)

Theorem: vl-wildeq-rewrite-main-of-vl-warninglist-fix-warnings

(defthm vl-wildeq-rewrite-main-of-vl-warninglist-fix-warnings
 (equal (vl-wildeq-rewrite-main x ctx (vl-warninglist-fix warnings))
        (vl-wildeq-rewrite-main x ctx warnings)))

Theorem: vl-wildeq-rewrite-main-vl-warninglist-equiv-congruence-on-warnings

(defthm
 vl-wildeq-rewrite-main-vl-warninglist-equiv-congruence-on-warnings
 (implies (vl-warninglist-equiv warnings warnings-equiv)
          (equal (vl-wildeq-rewrite-main x ctx warnings)
                 (vl-wildeq-rewrite-main x ctx warnings-equiv)))
 :rule-classes :congruence)