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• Vl-match-latch-main

Vl-match-latchbody-form1

Match lhs = [#delay] test ? rhs : lhs.

Signature

(vl-match-latchbody-form1 x) → (mv test lhs rhs delay)

Arguments

x — Guard (vl-stmt-p x).

Returns

test — Type (equal (vl-expr-p test) (if test t nil)), given the guard.

lhs — Type (and (equal (vl-expr-p lhs) (if test t nil)) (iff lhs test)), given the guard.

rhs — Type (and (equal (vl-expr-p rhs) (if test t nil)) (iff rhs test)), given the guard.

delay — maybe natp.

Definitions and Theorems

Function: vl-match-latchbody-form1

(defun vl-match-latchbody-form1 (x)
 (declare (xargs :guard (vl-stmt-p x)))
 (let ((__function__ 'vl-match-latchbody-form1))
  (declare (ignorable __function__))
  (b*
   (((unless (vl-assignstmt-p x))
     (mv nil nil nil nil))
    ((vl-assignstmt x) x)
    ((unless (or (eq x.type :vl-blocking)
                 (eq x.type :vl-nonblocking)))
     (mv nil nil nil nil))
    ((unless (and (not (vl-fast-atom-p x.expr))
                  (eq (vl-nonatom->op x.expr) :vl-qmark)))
     (mv nil nil nil nil))
    ((list test rhs lhs-copy?)
     (vl-nonatom->args x.expr))
    ((unless (equal x.lvalue lhs-copy?))
     (mv nil nil nil nil))
    ((unless (or (not x.ctrl)
                 (and (mbe :logic (vl-delaycontrol-p x.ctrl)
                           :exec (eq (tag x.ctrl) :vl-delaycontrol))
                      (vl-simpledelaycontrol-p x.ctrl))))
     (mv nil nil nil nil))
    (ticks (and x.ctrl
                (vl-simpledelaycontrol->ticks x.ctrl))))
   (mv test x.lvalue rhs ticks))))

Theorem: return-type-of-vl-match-latchbody-form1.test

(defthm return-type-of-vl-match-latchbody-form1.test
  (implies (and (force (vl-stmt-p x)))
           (b* (((mv ?test ?lhs ?rhs ?delay)
                 (vl-match-latchbody-form1 x)))
             (equal (vl-expr-p test)
                    (if test t nil))))
  :rule-classes :rewrite)

Theorem: return-type-of-vl-match-latchbody-form1.lhs

(defthm return-type-of-vl-match-latchbody-form1.lhs
  (implies (and (force (vl-stmt-p x)))
           (b* (((mv ?test ?lhs ?rhs ?delay)
                 (vl-match-latchbody-form1 x)))
             (and (equal (vl-expr-p lhs) (if test t nil))
                  (iff lhs test))))
  :rule-classes :rewrite)

Theorem: return-type-of-vl-match-latchbody-form1.rhs

(defthm return-type-of-vl-match-latchbody-form1.rhs
  (implies (and (force (vl-stmt-p x)))
           (b* (((mv ?test ?lhs ?rhs ?delay)
                 (vl-match-latchbody-form1 x)))
             (and (equal (vl-expr-p rhs) (if test t nil))
                  (iff rhs test))))
  :rule-classes :rewrite)

Theorem: maybe-natp-of-vl-match-latchbody-form1.ticks

(defthm maybe-natp-of-vl-match-latchbody-form1.ticks
  (maybe-natp (mv-nth 3 (vl-match-latchbody-form1 x)))
  :rule-classes :type-prescription)