;; until it is assigned a block, and may be also be temporarily
;; unused during later manipulations of IR1. In a consistent
;; state there should never be any mention of :UNUSED
- ;; continuations. Next can have a non-null value if the next node
+ ;; continuations. NEXT can have a non-null value if the next node
;; has already been determined.
;;
;; :DELETED
;; the node where this continuation is used, if unique. This is always
;; null in :DELETED and :UNUSED continuations, and is never null in
;; :INSIDE-BLOCK continuations. In a :BLOCK-START continuation, the
- ;; Block's START-USES indicate whether NIL means no uses or more
+ ;; BLOCK's START-USES indicate whether NIL means no uses or more
;; than one use.
(use nil :type (or node null))
;; the basic block this continuation is in. This is null only in
;;; is set when a continuation type assertion is strengthened.
;;; TEST-MODIFIED is set whenever the test for the ending IF has
;;; changed (may be true when there is no IF.)
-(def-boolean-attribute block
+(!def-boolean-attribute block
reoptimize flush-p type-check delete-p type-asserted test-modified)
;;; FIXME: Tweak so that definitions of e.g. BLOCK-DELETE-P is
(flags (block-attributes reoptimize flush-p type-check type-asserted
test-modified)
:type attributes)
- ;; CMU CL had a KILL slot here, documented as "set used by
- ;; constraint propagation", which was used in constraint propagation
- ;; as a list of LAMBDA-VARs killed, and in copy propagation as an
- ;; SSET, representing I dunno what. I (WHN) found this confusing,
- ;; and furthermore it caused type errors when I was trying to make
- ;; the compiler produce fully general LAMBDA functions directly
- ;; (instead of doing as CMU CL always did, producing extra little
- ;; functions which return the LAMDBA you need) and therefore taking
- ;; a new path through the compiler. So I split this into two:
- ;; KILL-LIST = list of LAMBDA-VARs killed, used in constraint propagation
- ;; KILL-SSET = an SSET value, used in copy propagation
- (kill-list nil :type list)
- (kill-sset nil :type (or sset null))
+ ;; in constraint propagation: list of LAMBDA-VARs killed in this block
+ ;; in copy propagation: list of killed TNs
+ (kill nil)
;; other sets used in constraint propagation and/or copy propagation
(gen nil)
(in nil)
(flag nil)
;; some kind of info used by the back end
(info nil)
- ;; If true, then constraints that hold in this block and its
- ;; successors by merit of being tested by its IF predecessor.
+ ;; constraints that hold in this block and its successors by merit
+ ;; of being tested by its IF predecessors.
(test-constraint nil :type (or sset null)))
(def!method print-object ((cblock cblock) stream)
(print-unreadable-object (cblock stream :type t :identity t)
- (format stream ":START c~W" (cont-num (block-start cblock)))))
+ (format stream "~W :START c~W"
+ (block-number cblock)
+ (cont-num (block-start cblock)))))
;;; The BLOCK-ANNOTATION class is inherited (via :INCLUDE) by
;;; different BLOCK-INFO annotation structures so that code
(sets () :type list))
;;; The GLOBAL-VAR structure represents a value hung off of the symbol
-;;; NAME. We use a :CONSTANT VAR when we know that the thing is a
-;;; constant, but don't know what the value is at compile time.
+;;; NAME.
(def!struct (global-var (:include basic-var))
;; kind of variable described
(kind (missing-arg)
;; Unlike the SOURCE-NAME slot, this slot's value should never
;; affect ordinary code behavior, only debugging/diagnostic behavior.
;;
+ ;; Ha. Ah, the starry-eyed idealism of the writer of the above
+ ;; paragraph. FUNCTION-LAMBDA-EXPRESSION's behaviour, as of
+ ;; sbcl-0.7.11.x, differs if the name of the a function is a string
+ ;; or not, as if it is a valid function name then it can look for an
+ ;; inline expansion.
+ ;;
;; The value of this slot can be anything, except that it shouldn't
;; be a legal function name, since otherwise debugging gets
;; confusing. (If a legal function name is a good name for the
projects / sbcl.git / blobdiff