(or (memq x *policy-qualities*)
(assq x *policy-dependent-qualities*)))
+;;; Is it deprecated?
+(defun policy-quality-deprecation-warning (quality spec)
+ (when (member quality '(stack-allocate-dynamic-extent stack-allocate-vector
+ stack-allocate-value-cells))
+ (make-instance 'simple-reference-warning
+ :format-control "~@<Ignoring deprecated optimization quality ~S in:~_ ~S~:>"
+ :format-arguments (list quality spec)
+ :references (list '(:sbcl :variable *stack-allocate-dynamic-extent*)
+ '(:sbcl :node "Dynamic-extent allocation")))))
+
;;; *POLICY* holds the current global compiler policy information, as
;;; an alist mapping from optimization quality name to quality value.
;;; Inside the scope of declarations, new entries are added at the