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Vl-expr-expandsizes

Vl-hidexpr-expandsizes

Propagate the final width and type of an expression into an identifier or HID.

Signature
(vl-hidexpr-expandsizes x finalwidth finaltype ss ctx warnings) → (mv successp warnings new-x)
Arguments: x — Guard (vl-expr-p x).; finalwidth — Guard (natp finalwidth).; finaltype — Guard (vl-exprtype-p finaltype).; ss — Guard (vl-scopestack-p ss).; ctx — Guard (vl-context-p ctx).; warnings — Guard (vl-warninglist-p warnings).
Returns: successp — Type (booleanp successp).; warnings — Type (vl-warninglist-p warnings).; new-x — Type (vl-expr-p new-x).

Definitions and Theorems

Function: vl-hidexpr-expandsizes

(defun vl-hidexpr-expandsizes
       (x finalwidth finaltype ss ctx warnings)
 (declare (xargs :guard (and (vl-expr-p x)
                             (natp finalwidth)
                             (vl-exprtype-p finaltype)
                             (vl-scopestack-p ss)
                             (vl-context-p ctx)
                             (vl-warninglist-p warnings))))
 (let ((__function__ 'vl-hidexpr-expandsizes))
  (declare (ignorable __function__))
  (b*
   ((x (vl-expr-fix x))
    (ctx (vl-context-fix ctx))
    (finalwidth (lnfix finalwidth))
    (finaltype (vl-exprtype-fix finaltype))
    ((mv warnings origwidth)
     (vl-expr-selfsize x ss ctx warnings))
    ((mv warnings origtype)
     (vl-expr-typedecide x ss ctx warnings))
    ((unless (and origwidth origtype))
     (mv
      nil
      (fatal
       :type :vl-programming-error
       :msg
       "~a0: expected to only try to expand sizes for atoms ~
                         whose sizes types can be successfully determined, ~
                         but we failed to determine the size or type of ~a1."
       :args (list ctx x))
      x))
    ((when (> origwidth finalwidth))
     (mv
      nil
      (fatal
       :type :vl-programming-error
       :msg
       "~a0: origwidth > finalwidth when expanding ~a1. This ~
                         indicates a serious bug in our sizing code."
       :args (list ctx x))
      x))
    ((unless (or (eq origtype finaltype)
                 (and (eq origtype :vl-signed)
                      (eq finaltype :vl-unsigned))))
     (mv
      nil
      (fatal
       :type :vl-programming-error
       :msg
       "~a0: origtype is ~s1 but finaltype is ~s2 when ~
                         expanding ~a3.  This indicates a serious bug in our ~
                         typing code."
       :args (list ctx origtype finaltype x))
      x))
    (new-x (if (vl-fast-atom-p x)
               (change-vl-atom x
                               :finalwidth finalwidth
                               :finaltype finaltype)
             (change-vl-nonatom x
                                :finalwidth finalwidth
                                :finaltype finaltype))))
   (mv t (ok) new-x))))

Theorem: booleanp-of-vl-hidexpr-expandsizes.successp

(defthm booleanp-of-vl-hidexpr-expandsizes.successp
  (b*
   (((mv ?successp ?warnings ?new-x)
     (vl-hidexpr-expandsizes x
                             finalwidth finaltype ss ctx warnings)))
   (booleanp successp))
  :rule-classes :type-prescription)

Theorem: vl-warninglist-p-of-vl-hidexpr-expandsizes.warnings

(defthm vl-warninglist-p-of-vl-hidexpr-expandsizes.warnings
  (b*
   (((mv ?successp ?warnings ?new-x)
     (vl-hidexpr-expandsizes x
                             finalwidth finaltype ss ctx warnings)))
   (vl-warninglist-p warnings))
  :rule-classes :rewrite)

Theorem: vl-expr-p-of-vl-hidexpr-expandsizes.new-x

(defthm vl-expr-p-of-vl-hidexpr-expandsizes.new-x
  (b*
   (((mv ?successp ?warnings ?new-x)
     (vl-hidexpr-expandsizes x
                             finalwidth finaltype ss ctx warnings)))
   (vl-expr-p new-x))
  :rule-classes :rewrite)

Theorem: no-change-loserp-of-vl-hidexpr-expandsizes

(defthm no-change-loserp-of-vl-hidexpr-expandsizes
 (let
  ((ret
     (vl-hidexpr-expandsizes x
                             finalwidth finaltype ss ctx warnings)))
  (implies (not (mv-nth 0 ret))
           (equal (mv-nth 2 ret)
                  (vl-expr-fix x)))))

Theorem: vl-expr-welltyped-p-of-vl-hidexpr-expandsizes

(defthm vl-expr-welltyped-p-of-vl-hidexpr-expandsizes
 (let
  ((ret
     (vl-hidexpr-expandsizes x
                             finalwidth finaltype ss ctx warnings)))
  (implies (and (mv-nth 0 ret) (vl-idexpr-p x))
           (vl-expr-welltyped-p (mv-nth 2 ret)))))

Theorem: warning-irrelevance-of-vl-hidexpr-expandsizes

(defthm warning-irrelevance-of-vl-hidexpr-expandsizes
 (let
  ((ret1
    (vl-hidexpr-expandsizes x finalwidth finaltype ss ctx warnings))
   (ret2
        (vl-hidexpr-expandsizes x finalwidth finaltype ss nil nil)))
  (implies (syntaxp (not (and (equal ctx ''nil)
                              (equal warnings ''nil))))
           (and (equal (mv-nth 0 ret1) (mv-nth 0 ret2))
                (equal (mv-nth 2 ret1)
                       (mv-nth 2 ret2))))))

Theorem: vl-expr->finalwidth-of-vl-hidexpr-expandsizes

(defthm vl-expr->finalwidth-of-vl-hidexpr-expandsizes
 (let
  ((ret
     (vl-hidexpr-expandsizes x
                             finalwidth finaltype ss ctx warnings)))
  (implies (mv-nth 0 ret)
           (equal (vl-expr->finalwidth (mv-nth 2 ret))
                  (nfix finalwidth)))))

Theorem: vl-expr->finaltype-of-vl-hidexpr-expandsizes

(defthm vl-expr->finaltype-of-vl-hidexpr-expandsizes
 (let
  ((ret
     (vl-hidexpr-expandsizes x
                             finalwidth finaltype ss ctx warnings)))
  (implies (mv-nth 0 ret)
           (equal (vl-expr->finaltype (mv-nth 2 ret))
                  (vl-exprtype-fix finaltype)))))

Theorem: vl-hidexpr-expandsizes-of-vl-expr-fix-x

(defthm vl-hidexpr-expandsizes-of-vl-expr-fix-x
 (equal
     (vl-hidexpr-expandsizes (vl-expr-fix x)
                             finalwidth finaltype ss ctx warnings)
     (vl-hidexpr-expandsizes x
                             finalwidth finaltype ss ctx warnings)))

Theorem: vl-hidexpr-expandsizes-vl-expr-equiv-congruence-on-x

(defthm vl-hidexpr-expandsizes-vl-expr-equiv-congruence-on-x
 (implies
  (vl-expr-equiv x x-equiv)
  (equal
     (vl-hidexpr-expandsizes x finalwidth finaltype ss ctx warnings)
     (vl-hidexpr-expandsizes x-equiv
                             finalwidth finaltype ss ctx warnings)))
 :rule-classes :congruence)

Theorem: vl-hidexpr-expandsizes-of-nfix-finalwidth

(defthm vl-hidexpr-expandsizes-of-nfix-finalwidth
 (equal
     (vl-hidexpr-expandsizes x (nfix finalwidth)
                             finaltype ss ctx warnings)
     (vl-hidexpr-expandsizes x
                             finalwidth finaltype ss ctx warnings)))

Theorem: vl-hidexpr-expandsizes-nat-equiv-congruence-on-finalwidth

(defthm vl-hidexpr-expandsizes-nat-equiv-congruence-on-finalwidth
 (implies
  (acl2::nat-equiv finalwidth finalwidth-equiv)
  (equal
     (vl-hidexpr-expandsizes x finalwidth finaltype ss ctx warnings)
     (vl-hidexpr-expandsizes x finalwidth-equiv
                             finaltype ss ctx warnings)))
 :rule-classes :congruence)

Theorem: vl-hidexpr-expandsizes-of-vl-exprtype-fix-finaltype

(defthm vl-hidexpr-expandsizes-of-vl-exprtype-fix-finaltype
 (equal
    (vl-hidexpr-expandsizes x finalwidth (vl-exprtype-fix finaltype)
                            ss ctx warnings)
    (vl-hidexpr-expandsizes x
                            finalwidth finaltype ss ctx warnings)))

Theorem: vl-hidexpr-expandsizes-vl-exprtype-equiv-congruence-on-finaltype

(defthm
   vl-hidexpr-expandsizes-vl-exprtype-equiv-congruence-on-finaltype
 (implies
  (vl-exprtype-equiv finaltype finaltype-equiv)
  (equal
     (vl-hidexpr-expandsizes x finalwidth finaltype ss ctx warnings)
     (vl-hidexpr-expandsizes x finalwidth
                             finaltype-equiv ss ctx warnings)))
 :rule-classes :congruence)

Theorem: vl-hidexpr-expandsizes-of-vl-scopestack-fix-ss

(defthm vl-hidexpr-expandsizes-of-vl-scopestack-fix-ss
 (equal
     (vl-hidexpr-expandsizes x finalwidth
                             finaltype (vl-scopestack-fix ss)
                             ctx warnings)
     (vl-hidexpr-expandsizes x
                             finalwidth finaltype ss ctx warnings)))

Theorem: vl-hidexpr-expandsizes-vl-scopestack-equiv-congruence-on-ss

(defthm vl-hidexpr-expandsizes-vl-scopestack-equiv-congruence-on-ss
 (implies
  (vl-scopestack-equiv ss ss-equiv)
  (equal
     (vl-hidexpr-expandsizes x finalwidth finaltype ss ctx warnings)
     (vl-hidexpr-expandsizes x finalwidth
                             finaltype ss-equiv ctx warnings)))
 :rule-classes :congruence)

Theorem: vl-hidexpr-expandsizes-of-vl-context-fix-ctx

(defthm vl-hidexpr-expandsizes-of-vl-context-fix-ctx
 (equal
     (vl-hidexpr-expandsizes x finalwidth
                             finaltype ss (vl-context-fix ctx)
                             warnings)
     (vl-hidexpr-expandsizes x
                             finalwidth finaltype ss ctx warnings)))

Theorem: vl-hidexpr-expandsizes-vl-context-equiv-congruence-on-ctx

(defthm vl-hidexpr-expandsizes-vl-context-equiv-congruence-on-ctx
 (implies
  (vl-context-equiv ctx ctx-equiv)
  (equal
     (vl-hidexpr-expandsizes x finalwidth finaltype ss ctx warnings)
     (vl-hidexpr-expandsizes x finalwidth
                             finaltype ss ctx-equiv warnings)))
 :rule-classes :congruence)

Theorem: vl-hidexpr-expandsizes-of-vl-warninglist-fix-warnings

(defthm vl-hidexpr-expandsizes-of-vl-warninglist-fix-warnings
 (equal
     (vl-hidexpr-expandsizes x finalwidth finaltype
                             ss ctx (vl-warninglist-fix warnings))
     (vl-hidexpr-expandsizes x
                             finalwidth finaltype ss ctx warnings)))

Theorem: vl-hidexpr-expandsizes-vl-warninglist-equiv-congruence-on-warnings

(defthm
 vl-hidexpr-expandsizes-vl-warninglist-equiv-congruence-on-warnings
 (implies
  (vl-warninglist-equiv warnings warnings-equiv)
  (equal
     (vl-hidexpr-expandsizes x finalwidth finaltype ss ctx warnings)
     (vl-hidexpr-expandsizes x finalwidth
                             finaltype ss ctx warnings-equiv)))
 :rule-classes :congruence)