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• Vl-occform-argfix

Vl-occform-extend-id

Signature

(vl-occform-extend-id x range warnings) → (mv warnings new-x)

Arguments

x — Wire that we need to perhaps extend.
    Guard (vl-expr-p x).

range — Range of this wire.
    Guard (vl-maybe-range-p range).

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

Returns

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

new-x — Type (vl-expr-p new-x).

Definitions and Theorems

Function: vl-occform-extend-id

(defun vl-occform-extend-id (x range warnings)
 (declare (xargs :guard (and (vl-expr-p x)
                             (vl-maybe-range-p range)
                             (vl-warninglist-p warnings))))
 (declare (xargs :guard (and (vl-idexpr-p x)
                             (posp (vl-expr->finalwidth x))
                             (vl-expr->finaltype x))))
 (let ((__function__ 'vl-occform-extend-id))
  (declare (ignorable __function__))
  (b*
   ((x (vl-expr-fix x))
    (range (vl-maybe-range-fix range))
    (finalwidth (vl-expr->finalwidth x))
    (finaltype (vl-expr->finaltype x))
    ((unless (vl-maybe-range-resolved-p range))
     (mv (fatal :type :vl-occform-bad-id
                :msg "Expected range for ~a0 to be resolved: ~a1."
                :args (list x range))
         x))
    (actual-size (vl-maybe-range-size range))
    ((when (eql actual-size finalwidth))
     (mv (ok) x))
    ((when (< finalwidth actual-size))
     (mv (fatal :type :vl-occform-bad-id
                :msg "Finalwidth of ~a0 is too small for range ~a1."
                :args (list x range))
         x))
    (name (vl-idexpr->name x))
    (id-part (vl-idexpr name actual-size finaltype))
    (pad-width (- finalwidth actual-size))
    (pad-bit
     (cond
      ((eq finaltype :vl-unsigned)
       |*sized-1'b0*|)
      ((not range)
       (vl-idexpr name 1 :vl-signed))
      (t
       (make-vl-nonatom
        :op :vl-bitselect
        :args
        (list
           id-part
           (vl-make-index (vl-resolved->val (vl-range->msb range))))
        :finalwidth 1
        :finaltype :vl-unsigned))))
    (concat
        (make-vl-nonatom :op :vl-concat
                         :args (append (replicate pad-width pad-bit)
                                       (list id-part))
                         :finalwidth finalwidth
                         :finaltype :vl-unsigned)))
   (mv (ok) concat))))

Theorem: vl-warninglist-p-of-vl-occform-extend-id.warnings

(defthm vl-warninglist-p-of-vl-occform-extend-id.warnings
  (b* (((mv ?warnings ?new-x)
        (vl-occform-extend-id x range warnings)))
    (vl-warninglist-p warnings))
  :rule-classes :rewrite)

Theorem: vl-expr-p-of-vl-occform-extend-id.new-x

(defthm vl-expr-p-of-vl-occform-extend-id.new-x
  (b* (((mv ?warnings ?new-x)
        (vl-occform-extend-id x range warnings)))
    (vl-expr-p new-x))
  :rule-classes :rewrite)

Theorem: vl-expr->finalwidth-of-vl-occform-extend-id

(defthm vl-expr->finalwidth-of-vl-occform-extend-id
  (equal (vl-expr->finalwidth
              (mv-nth 1
                      (vl-occform-extend-id x range warnings)))
         (vl-expr->finalwidth x)))

Theorem: vl-expr-welltyped-p-of-vl-occform-extend-id

(defthm vl-expr-welltyped-p-of-vl-occform-extend-id
  (implies (and (vl-expr-welltyped-p x)
                (vl-idexpr-p x)
                (vl-expr->finaltype x))
           (vl-expr-welltyped-p
                (mv-nth 1
                        (vl-occform-extend-id x range warnings)))))

Theorem: vl-occform-extend-id-of-vl-expr-fix-x

(defthm vl-occform-extend-id-of-vl-expr-fix-x
  (equal (vl-occform-extend-id (vl-expr-fix x)
                               range warnings)
         (vl-occform-extend-id x range warnings)))

Theorem: vl-occform-extend-id-vl-expr-equiv-congruence-on-x

(defthm vl-occform-extend-id-vl-expr-equiv-congruence-on-x
  (implies (vl-expr-equiv x x-equiv)
           (equal (vl-occform-extend-id x range warnings)
                  (vl-occform-extend-id x-equiv range warnings)))
  :rule-classes :congruence)

Theorem: vl-occform-extend-id-of-vl-maybe-range-fix-range

(defthm vl-occform-extend-id-of-vl-maybe-range-fix-range
  (equal (vl-occform-extend-id x (vl-maybe-range-fix range)
                               warnings)
         (vl-occform-extend-id x range warnings)))

Theorem: vl-occform-extend-id-vl-maybe-range-equiv-congruence-on-range

(defthm
      vl-occform-extend-id-vl-maybe-range-equiv-congruence-on-range
  (implies (vl-maybe-range-equiv range range-equiv)
           (equal (vl-occform-extend-id x range warnings)
                  (vl-occform-extend-id x range-equiv warnings)))
  :rule-classes :congruence)

Theorem: vl-occform-extend-id-of-vl-warninglist-fix-warnings

(defthm vl-occform-extend-id-of-vl-warninglist-fix-warnings
 (equal (vl-occform-extend-id x range (vl-warninglist-fix warnings))
        (vl-occform-extend-id x range warnings)))

Theorem: vl-occform-extend-id-vl-warninglist-equiv-congruence-on-warnings

(defthm
   vl-occform-extend-id-vl-warninglist-equiv-congruence-on-warnings
  (implies (vl-warninglist-equiv warnings warnings-equiv)
           (equal (vl-occform-extend-id x range warnings)
                  (vl-occform-extend-id x range warnings-equiv)))
  :rule-classes :congruence)