;; cached type of this continuation's value. If NIL, then this must
;; be recomputed: see CONTINUATION-DERIVED-TYPE.
(%derived-type nil :type (or ctype null))
- ;; Node where this continuation is used, if unique. This is always
+ ;; 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
(defstruct (node (:constructor nil)
(:copier nil))
+ ;; unique ID for debugging
+ #!+sb-show (id (new-object-id) :read-only t)
;; the bottom-up derived type for this node. This does not take into
;; consideration output type assertions on this node (actually on its CONT).
(derived-type *wild-type* :type ctype)
;;; checking blocks we have already checked.
;;; -- DELETE-P is true when this block is used to indicate that this block
;;; has been determined to be unreachable and should be deleted. IR1
-;;; phases should not attempt to examine or modify blocks with DELETE-P
+;;; phases should not attempt to examine or modify blocks with DELETE-P
;;; set, since they may:
;;; - be in the process of being deleted, or
;;; - have no successors, or
(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
+;;; findable by grep for 'def.*block-delete-p'.
(macrolet ((frob (slot)
`(defmacro ,(symbolicate "BLOCK-" slot) (block)
`(block-attributep (block-flags ,block) ,',slot))))
(out nil)
;; the component this block is in, or NIL temporarily during IR1
;; conversion and in deleted blocks
- (component *current-component* :type (or component null))
+ (component (progn
+ (aver-live-component *current-component*)
+ *current-component*)
+ :type (or component null))
;; a flag used by various graph-walking code to determine whether
;; this block has been processed already or what. We make this
;; initially NIL so that FIND-INITIAL-DFO doesn't have to scan the
(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~D" (cont-num (block-start cblock)))))
+ (format stream ":START c~W" (cont-num (block-start cblock)))))
;;; The BLOCK-ANNOTATION class is inherited (via :INCLUDE) by
;;; different BLOCK-INFO annotation structures so that code
;; The IR1 block that this block is in the INFO for.
(block (missing-arg) :type cblock)
;; the next and previous block in emission order (not DFO). This
- ;; determines which block we drop though to, and also used to chain
- ;; together overflow blocks that result from splitting of IR2 blocks
- ;; in lifetime analysis.
+ ;; determines which block we drop though to, and is also used to
+ ;; chain together overflow blocks that result from splitting of IR2
+ ;; blocks in lifetime analysis.
(next nil :type (or block-annotation null))
(prev nil :type (or block-annotation null)))
;;; A COMPONENT structure provides a handle on a connected piece of
;;; the flow graph. Most of the passes in the compiler operate on
;;; COMPONENTs rather than on the entire flow graph.
+;;;
+;;; According to the CMU CL internals/front.tex, the reason for
+;;; separating compilation into COMPONENTs is
+;;; to increase the efficiency of large block compilations. In
+;;; addition to improving locality of reference and reducing the
+;;; size of flow analysis problems, this allows back-end data
+;;; structures to be reclaimed after the compilation of each
+;;; component.
(defstruct (component (:copier nil))
+ ;; unique ID for debugging
+ #!+sb-show (id (new-object-id) :read-only t)
;; the kind of component
;;
;; (The terminology here is left over from before
(reanalyze nil :type boolean)
;; some sort of name for the code in this component
(name "<unknown>" :type simple-string)
- ;; some kind of info used by the back end
- (info nil)
+ ;; When I am a child, this is :NO-IR2-YET.
+ ;; In my adulthood, IR2 stores notes to itself here.
+ ;; After I have left the great wheel and am staring into the GC, this
+ ;; is set to :DEAD to indicate that it's a gruesome error to operate
+ ;; on me (e.g. by using me as *CURRENT-COMPONENT*, or by pushing
+ ;; LAMBDAs onto my NEW-FUNS, as in sbcl-0.pre7.115).
+ (info :no-ir2-yet :type (or ir2-component (member :no-ir2-yet :dead)))
;; the SOURCE-INFO structure describing where this component was
;; compiled from
(source-info *source-info* :type source-info)
(reanalyze-funs nil :type list))
(defprinter (component :identity t)
name
+ #!+sb-show id
(reanalyze :test reanalyze))
+;;; Check that COMPONENT is suitable for roles which involve adding
+;;; new code. (gotta love imperative programming with lotso in-place
+;;; side-effects...)
+(defun aver-live-component (component)
+ ;; FIXME: As of sbcl-0.pre7.115, we're asserting that
+ ;; COMPILE-COMPONENT hasn't happened yet. Might it be even better
+ ;; (certainly stricter, possibly also correct...) to assert that
+ ;; IR1-FINALIZE hasn't happened yet?
+ (aver (not (eql (component-info component) :dead))))
+
;;; Before sbcl-0.7.0, there were :TOPLEVEL things which were magical
;;; in multiple ways. That's since been refactored into the orthogonal
;;; properties "optimized for locall with no arguments" and "externally
;;; TNs, or eventually stack slots and registers). -- WHN 2001-09-29
(defstruct (physenv (:copier nil))
;; the function that allocates this physical environment
- (function (missing-arg) :type clambda)
+ (lambda (missing-arg) :type clambda :read-only t)
#| ; seems not to be used as of sbcl-0.pre7.51
;; a list of all the lambdas that allocate variables in this
;; physical environment
;; some kind of info used by the back end
(info nil))
(defprinter (physenv :identity t)
- function
+ lambda
(closure :test closure)
(nlx-info :test nlx-info))
;;; hacking the flow graph.
(def!struct (leaf (:make-load-form-fun ignore-it)
(:constructor nil))
+ ;; unique ID for debugging
+ #!+sb-show (id (new-object-id) :read-only t)
;; (For public access to this slot, use LEAF-SOURCE-NAME.)
;;
;; the name of LEAF as it appears in the source, e.g. 'FOO or '(SETF
:type (member :special :global-function :global)))
(defprinter (global-var :identity t)
%source-name
+ #!+sb-show id
(type :test (not (eq type *universal-type*)))
(where-from :test (not (eq where-from :assumed)))
kind)
(functional nil :type (or functional null)))
(defprinter (defined-fun :identity t)
%source-name
+ #!+sb-show id
inlinep
(functional :test functional))
\f
(plist () :type list))
(defprinter (functional :identity t)
%source-name
- %debug-name)
+ %debug-name
+ #!+sb-show id)
;;; FUNCTIONAL name operations
(defun functional-debug-name (functional)
;; If this CLAMBDA is a LET, then this slot holds the LAMBDA whose
;; LETS list we are in, otherwise it is a self-pointer.
(home nil :type (or clambda null))
- ;; a list of all the all the lambdas that have been LET-substituted
- ;; in this lambda. This is only non-null in lambdas that aren't
- ;; LETs.
- (lets () :type list)
- ;; a list of all the ENTRY nodes in this function and its LETs, or
- ;; null in a LET
- (entries () :type list)
- ;; a list of all the functions directly called from this function
- ;; (or one of its LETs) using a non-LET local call. This may include
- ;; deleted functions because nobody bothers to clear them out.
- (calls () :type list)
+ ;; all the lambdas that have been LET-substituted in this lambda.
+ ;; This is only non-null in lambdas that aren't LETs.
+ (lets nil :type list)
+ ;; all the ENTRY nodes in this function and its LETs, or null in a LET
+ (entries nil :type list)
+ ;; CLAMBDAs which are locally called by this lambda, and other
+ ;; objects (closed-over LAMBDA-VARs and XEPs) which this lambda
+ ;; depends on in such a way that DFO shouldn't put them in separate
+ ;; components.
+ (calls-or-closes nil :type list)
;; the TAIL-SET that this LAMBDA is in. This is null during creation.
;;
;; In CMU CL, and old SBCL, this was also NILed out when LET
(defprinter (clambda :conc-name lambda- :identity t)
%source-name
%debug-name
+ #!+sb-show id
(type :test (not (eq type *universal-type*)))
(where-from :test (not (eq where-from :assumed)))
(vars :prin1 (mapcar #'leaf-source-name vars)))
(defprinter (optional-dispatch :identity t)
%source-name
%debug-name
+ #!+sb-show id
(type :test (not (eq type *universal-type*)))
(where-from :test (not (eq where-from :assumed)))
arglist
;;; LAMBDA-VARs with no REFs are considered to be deleted; physical
;;; environment analysis isn't done on these variables, so the back
;;; end must check for and ignore unreferenced variables. Note that a
-;;; deleted lambda-var may have sets; in this case the back end is
-;;; still responsible for propagating the Set-Value to the set's Cont.
+;;; deleted LAMBDA-VAR may have sets; in this case the back end is
+;;; still responsible for propagating the SET-VALUE to the set's CONT.
(def!struct (lambda-var (:include basic-var))
;; true if this variable has been declared IGNORE
(ignorep nil :type boolean)
(constraints nil :type (or sset null)))
(defprinter (lambda-var :identity t)
%source-name
+ #!+sb-show id
(type :test (not (eq type *universal-type*)))
(where-from :test (not (eq where-from :assumed)))
(ignorep :test ignorep)
;; The leaf referenced.
(leaf nil :type leaf))
(defprinter (ref :identity t)
+ #!+sb-show id
leaf)
;;; Naturally, the IF node always appears at the end of a block.
;; the kind of function call being made. :LOCAL means that this is a
;; local call to a function in the same component, and that argument
;; syntax checking has been done, etc. Calls to known global
- ;; functions are represented by storing the FUNCTION-INFO for the
+ ;; functions are represented by storing the FUN-INFO for the
;; function in this slot. :FULL is a call to an (as yet) unknown
;; function. :ERROR is like :FULL, but means that we have discovered
;; that the call contains an error, and should not be reconsidered
;; for optimization.
- (kind :full :type (or (member :local :full :error) function-info))
+ (kind :full :type (or (member :local :full :error) fun-info))
;; some kind of information attached to this node by the back end
(info nil))
(:constructor make-combination (fun))
(:copier nil)))
(defprinter (combination :identity t)
+ #!+sb-show id
(fun :prin1 (continuation-use fun))
(args :prin1 (mapcar (lambda (x)
(if x
;;; cleanup.
(defstruct (entry (:include node)
(:copier nil))
- ;; All of the Exit nodes for potential non-local exits to this point.
+ ;; All of the EXIT nodes for potential non-local exits to this point.
(exits nil :type list)
;; The cleanup for this entry. NULL only temporarily.
(cleanup nil :type (or cleanup null)))
-(defprinter (entry :identity t))
+(defprinter (entry :identity t)
+ #!+sb-show id)
;;; The EXIT node marks the place at which exit code would be emitted,
;;; if necessary. This is interposed between the uses of the exit
;;; original exit continuation is the exit node's CONT.
(defstruct (exit (:include node)
(:copier nil))
- ;; The Entry node that this is an exit for. If null, this is a
+ ;; the ENTRY node that this is an exit for. If null, this is a
;; degenerate exit. A degenerate exit is used to "fill" an empty
;; block (which isn't allowed in IR1.) In a degenerate exit, Value
;; is always also null.
(entry nil :type (or entry null))
- ;; The continuation yeilding the value we are to exit with. If NIL,
+ ;; the continuation yielding the value we are to exit with. If NIL,
;; then no value is desired (as in GO).
(value nil :type (or continuation null)))
(defprinter (exit :identity t)
+ #!+sb-show id
(entry :test entry)
(value :test value))
\f
projects / sbcl.git / blobdiff