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• Expr-simp

Vl-expr-simp-binary-bitor

Signature

(vl-expr-simp-binary-bitor x args) → new-x

Arguments

x — Expression to rewrite, of the form FOO | BAR.
    Guard (vl-expr-p x).

args — Its already-rewritten args.
    Guard (vl-exprlist-p args).

Returns

new-x — Type (vl-expr-p new-x).

Definitions and Theorems

Function: vl-expr-simp-binary-bitor

(defun vl-expr-simp-binary-bitor (x args)
  (declare (xargs :guard (and (vl-expr-p x)
                              (vl-exprlist-p args))))
  (declare (xargs :guard (and (not (vl-atom-p x))
                              (equal (vl-nonatom->op x)
                                     :vl-binary-bitor)
                              (equal (len args) 2))))
  (let ((__function__ 'vl-expr-simp-binary-bitor))
    (declare (ignorable __function__))
    (b* (((list arg1 arg2) args)
         ((when (and (vl-expr-resolved-p arg2)
                     (eql (vl-resolved->val arg2) 0)
                     (equal (vl-expr->finalwidth x)
                            (vl-expr->finalwidth arg1))
                     (equal (vl-expr->finaltype x)
                            (vl-expr->finaltype arg1))))
          (b* ((ans (vl-expr-fix arg1)))
            (vl-cw-ps-seq (vl-cw "ORa0 rewrite ~a0 to ~a1~%" x ans))
            ans))
         ((when (and (vl-expr-resolved-p arg1)
                     (eql (vl-resolved->val arg1) 0)
                     (equal (vl-expr->finalwidth x)
                            (vl-expr->finalwidth arg2))
                     (equal (vl-expr->finaltype x)
                            (vl-expr->finaltype arg2))))
          (b* ((ans (vl-expr-fix arg2)))
            (vl-cw-ps-seq (vl-cw "OR0a rewrite ~a0 to ~a1~%" x ans))
            ans))
         ((when (and (vl-expr-resolved-p arg2)
                     (eql (vl-resolved->val arg2) 1)
                     (equal (vl-expr->finalwidth x) 1)
                     (equal (vl-expr->finalwidth arg1) 1)
                     (equal (vl-expr->finalwidth arg2) 1)
                     (eq (vl-expr->finaltype x) :vl-unsigned)
                     (eq (vl-expr->finaltype arg1)
                         :vl-unsigned)
                     (eq (vl-expr->finaltype arg2)
                         :vl-unsigned)))
          (b* ((ans (vl-expr-fix arg2)))
            (vl-cw-ps-seq (vl-cw "ORa1 rewrite ~a0 to ~a1~%" x ans))
            ans))
         ((when (and (vl-expr-resolved-p arg1)
                     (eql (vl-resolved->val arg1) 1)
                     (equal (vl-expr->finalwidth x) 1)
                     (equal (vl-expr->finalwidth arg1) 1)
                     (equal (vl-expr->finalwidth arg2) 1)
                     (eq (vl-expr->finaltype x) :vl-unsigned)
                     (eq (vl-expr->finaltype arg1)
                         :vl-unsigned)
                     (eq (vl-expr->finaltype arg2)
                         :vl-unsigned)))
          (b* ((ans (vl-expr-fix arg1)))
            (vl-cw-ps-seq (vl-cw "OR1a rewrite ~a0 to ~a1~%" x ans))
            ans)))
      (change-vl-nonatom x :args args))))

Theorem: vl-expr-p-of-vl-expr-simp-binary-bitor

(defthm vl-expr-p-of-vl-expr-simp-binary-bitor
  (b* ((new-x (vl-expr-simp-binary-bitor x args)))
    (vl-expr-p new-x))
  :rule-classes :rewrite)

Theorem: vl-expr-simp-binary-bitor-of-vl-expr-fix-x

(defthm vl-expr-simp-binary-bitor-of-vl-expr-fix-x
  (equal (vl-expr-simp-binary-bitor (vl-expr-fix x)
                                    args)
         (vl-expr-simp-binary-bitor x args)))

Theorem: vl-expr-simp-binary-bitor-vl-expr-equiv-congruence-on-x

(defthm vl-expr-simp-binary-bitor-vl-expr-equiv-congruence-on-x
  (implies (vl-expr-equiv x x-equiv)
           (equal (vl-expr-simp-binary-bitor x args)
                  (vl-expr-simp-binary-bitor x-equiv args)))
  :rule-classes :congruence)

Theorem: vl-expr-simp-binary-bitor-of-vl-exprlist-fix-args

(defthm vl-expr-simp-binary-bitor-of-vl-exprlist-fix-args
  (equal (vl-expr-simp-binary-bitor x (vl-exprlist-fix args))
         (vl-expr-simp-binary-bitor x args)))

Theorem: vl-expr-simp-binary-bitor-vl-exprlist-equiv-congruence-on-args

(defthm
     vl-expr-simp-binary-bitor-vl-exprlist-equiv-congruence-on-args
  (implies (vl-exprlist-equiv args args-equiv)
           (equal (vl-expr-simp-binary-bitor x args)
                  (vl-expr-simp-binary-bitor x args-equiv)))
  :rule-classes :congruence)