Compute sizes and types of expressions throughout a vl-assign-p
(vl-assign-exprsize x ss warnings) → (mv successp warnings new-x)
Function:
(defun vl-assign-exprsize (x ss warnings) (declare (xargs :guard (and (vl-assign-p x) (vl-scopestack-p ss) (vl-warninglist-p warnings)))) (let ((__function__ 'vl-assign-exprsize)) (declare (ignorable __function__)) (b* ((x (vl-assign-fix x)) (warnings (vl-warninglist-fix warnings))) (b* (((vl-assign x) x) (ctx x) ((unless (vl-expr-lvaluep x.lvalue)) (mv nil (fatal :type :vl-bad-assignment :msg "~a0: Illegal left-hand side: ~a1." :args (list ctx x.lvalue)) x)) ((mv ok lhs-prime rhs-prime warnings) (vl-assigncontext-size x.lvalue x.expr ss ctx warnings)) ((unless ok) (mv nil warnings x)) (lhs-size (vl-expr->finalwidth lhs-prime)) (warnings (if (and (posp (vl-expr->finalwidth rhs-prime)) (< lhs-size (vl-expr->finalwidth rhs-prime))) (vl-maybe-warn-about-implicit-truncation lhs-prime rhs-prime x warnings) warnings)) ((mv delay-successp warnings delay-prime) (vl-maybe-gatedelay-exprsize x.delay ss ctx warnings)) ((unless delay-successp) (mv nil warnings x)) (x-prime (change-vl-assign x :lvalue lhs-prime :expr rhs-prime :delay delay-prime))) (mv t warnings x-prime)))))
Theorem:
(defthm booleanp-of-vl-assign-exprsize.successp (b* (((mv ?successp ?warnings ?new-x) (vl-assign-exprsize x ss warnings))) (booleanp successp)) :rule-classes :type-prescription)
Theorem:
(defthm vl-warninglist-p-of-vl-assign-exprsize.warnings (b* (((mv ?successp ?warnings ?new-x) (vl-assign-exprsize x ss warnings))) (vl-warninglist-p warnings)) :rule-classes :rewrite)
Theorem:
(defthm vl-assign-p-of-vl-assign-exprsize.new-x (b* (((mv ?successp ?warnings ?new-x) (vl-assign-exprsize x ss warnings))) (vl-assign-p new-x)) :rule-classes :rewrite)
Theorem:
(defthm vl-assign-exprsize-of-vl-assign-fix-x (equal (vl-assign-exprsize (vl-assign-fix x) ss warnings) (vl-assign-exprsize x ss warnings)))
Theorem:
(defthm vl-assign-exprsize-vl-assign-equiv-congruence-on-x (implies (vl-assign-equiv x x-equiv) (equal (vl-assign-exprsize x ss warnings) (vl-assign-exprsize x-equiv ss warnings))) :rule-classes :congruence)
Theorem:
(defthm vl-assign-exprsize-of-vl-scopestack-fix-ss (equal (vl-assign-exprsize x (vl-scopestack-fix ss) warnings) (vl-assign-exprsize x ss warnings)))
Theorem:
(defthm vl-assign-exprsize-vl-scopestack-equiv-congruence-on-ss (implies (vl-scopestack-equiv ss ss-equiv) (equal (vl-assign-exprsize x ss warnings) (vl-assign-exprsize x ss-equiv warnings))) :rule-classes :congruence)
Theorem:
(defthm vl-assign-exprsize-of-vl-warninglist-fix-warnings (equal (vl-assign-exprsize x ss (vl-warninglist-fix warnings)) (vl-assign-exprsize x ss warnings)))
Theorem:
(defthm vl-assign-exprsize-vl-warninglist-equiv-congruence-on-warnings (implies (vl-warninglist-equiv warnings warnings-equiv) (equal (vl-assign-exprsize x ss warnings) (vl-assign-exprsize x ss warnings-equiv))) :rule-classes :congruence)