X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=src%2Fcompiler%2Fearly-c.lisp;h=b313fcc4f34a54e3a9393c7d8784ca526a5299d8;hb=7f579b076a1fc54587538ead07e506e7f06f3fe8;hp=6e461739f78081d989cb8bce4f7a82997cc40503;hpb=c9c0e648c51317ff374851c4fcc740a15d37acae;p=sbcl.git diff --git a/src/compiler/early-c.lisp b/src/compiler/early-c.lisp index 6e46173..b313fcc 100644 --- a/src/compiler/early-c.lisp +++ b/src/compiler/early-c.lisp @@ -15,14 +15,20 @@ (in-package "SB!C") -(file-comment - "$Header$") - -;;; FIXME: shouldn't SB-C::&MORE be in this list? -(defconstant sb!xc:lambda-list-keywords - '(&optional &rest &key &aux &body &whole &allow-other-keys &environment) +;;; ANSI limits on compilation +(def!constant sb!xc:call-arguments-limit sb!xc:most-positive-fixnum + #!+sb-doc + "The exclusive upper bound on the number of arguments which may be passed + to a function, including &REST args.") +(def!constant sb!xc:lambda-parameters-limit sb!xc:most-positive-fixnum + #!+sb-doc + "The exclusive upper bound on the number of parameters which may be specifed + in a given lambda list. This is actually the limit on required and &OPTIONAL + parameters. With &KEY and &AUX you can get more.") +(def!constant sb!xc:multiple-values-limit sb!xc:most-positive-fixnum #!+sb-doc - "symbols which are magical in a lambda list") + "The exclusive upper bound on the number of multiple VALUES that you can + return.") ;;;; cross-compiler-only versions of CL special variables, so that we ;;;; don't have weird interactions with the host compiler @@ -40,70 +46,37 @@ ;;; the type of LAYOUT-DEPTHOID slot values (def!type sb!kernel::layout-depthoid () '(or index (integer -1 -1))) - -;;; a value for an optimization declaration -(def!type sb!c::cookie-quality () '(or (rational 0 3) null)) -;;; A COOKIE holds information about the compilation environment for a -;;; node. See the LEXENV definition for a description of how it is -;;; used. -(def!struct (cookie (:copier nil)) - (speed nil :type cookie-quality) - (space nil :type cookie-quality) - (safety nil :type cookie-quality) - (cspeed nil :type cookie-quality) - (brevity nil :type cookie-quality) - (debug nil :type cookie-quality)) - -;;; KLUDGE: This needs to be executable in cold init toplevel forms, earlier -;;; than the default copier closure created by DEFSTRUCT toplevel forms would -;;; be available, and earlier than LAYOUT-INFO is initialized (which is a -;;; prerequisite for COPY-STRUCTURE to work), so we define it explicitly using -;;; DEFUN, so that it can be installed by the cold loader, and using -;;; hand-written, hand-maintained slot-by-slot copy it doesn't need to call -;;; COPY-STRUCTURE. -- WHN 19991019 -(defun copy-cookie (cookie) - (make-cookie :speed (cookie-speed cookie) - :space (cookie-space cookie) - :safety (cookie-safety cookie) - :cspeed (cookie-cspeed cookie) - :brevity (cookie-brevity cookie) - :debug (cookie-debug cookie))) - -;;; *DEFAULT-COOKIE* holds the current global compiler policy information. -;;; Whenever the policy is changed, we copy the structure so that old uses will -;;; still get the old values. *DEFAULT-INTERFACE-COOKIE* holds any values -;;; specified by an OPTIMIZE-INTERFACE declaration. -;;; -;;; FIXME: Why isn't COOKIE called POLICY? -(declaim (type cookie *default-cookie* *default-interface-cookie*)) -(defvar *default-cookie*) ; initialized in cold init -(defvar *default-interface-cookie*) ; initialized in cold init - ;;; possible values for the INLINE-ness of a function. (deftype inlinep () '(member :inline :maybe-inline :notinline nil)) -(defconstant inlinep-translations +(defparameter *inlinep-translations* '((inline . :inline) (notinline . :notinline) (maybe-inline . :maybe-inline))) -;;; The lexical environment we are currently converting in. +;;; the lexical environment we are currently converting in (defvar *lexenv*) (declaim (type lexenv *lexenv*)) -;;; *FREE-VARIABLES* translates from the names of variables referenced -;;; globally to the LEAF structures for them. *FREE-FUNCTIONS* is like -;;; *FREE-VARIABLES*, only it deals with function names. -(defvar *free-variables*) -(defvar *free-functions*) -(declaim (hash-table *free-variables* *free-functions*)) +;;; *FREE-VARS* translates from the names of variables referenced +;;; globally to the LEAF structures for them. *FREE-FUNS* is like +;;; *FREE-VARS*, only it deals with function names. +(defvar *free-vars*) +(defvar *free-funs*) +(declaim (type hash-table *free-vars* *free-funs*)) -;;; We use the same Constant structure to represent all equal anonymous -;;; constants. This hashtable translates from constants to the Leafs that +;;; We use the same CONSTANT structure to represent all equal anonymous +;;; constants. This hashtable translates from constants to the LEAFs that ;;; represent them. (defvar *constants*) -(declaim (hash-table *constants*)) +(declaim (type hash-table *constants*)) + +;;; *ALLOW-INSTRUMENTING* controls whether we should allow the +;;; insertion of instrumenting code (like a (CATCH ...)) around code +;;; to allow the debugger RETURN and STEP commands to function (we +;;; disallow it for internal stuff). +(defvar *allow-instrumenting*) ;;; miscellaneous forward declarations (defvar *code-segment*) @@ -114,25 +87,71 @@ (defvar *compiler-warning-count*) (defvar *compiler-style-warning-count*) (defvar *compiler-note-count*) -(defvar *converting-for-interpreter*) +(defvar *compiler-trace-output*) +(defvar *constraint-universe*) (defvar *count-vop-usages*) (defvar *current-path*) (defvar *current-component*) -(defvar *default-cookie*) -(defvar *default-interface-cookie*) +(defvar *delayed-ir1-transforms*) +(defvar *eval-tlf-index*) +(defvar *handled-conditions*) +(defvar *disabled-package-locks*) +(defvar *policy*) (defvar *dynamic-counts-tn*) (defvar *elsewhere*) (defvar *event-info*) (defvar *event-note-threshold*) (defvar *failure-p*) -(defvar *fixups*) +(defvar *fixup-notes*) (defvar *in-pack*) (defvar *info-environment*) +#!+inline-constants +(progn + (defvar *constant-segment*) + (defvar *constant-table*) + (defvar *constant-vector*)) (defvar *lexenv*) (defvar *source-info*) +(defvar *source-plist*) +(defvar *source-namestring*) (defvar *trace-table*) (defvar *undefined-warnings*) (defvar *warnings-p*) +(defvar *lambda-conversions*) + +(defvar *stack-allocate-dynamic-extent* t + "If true (the default), the compiler respects DYNAMIC-EXTENT declarations +and stack allocates otherwise inaccessible parts of the object whenever +possible. Potentially long (over one page in size) vectors are, however, not +stack allocated except in zero SAFETY code, as such a vector could overflow +the stack without triggering overflow protection.") + +(!begin-collecting-cold-init-forms) +;;; This lock is seized in the compiler, and related areas -- like the +;;; classoid/layout/class system. +(defglobal **world-lock** nil) +(!cold-init-forms + (setf **world-lock** (sb!thread:make-mutex :name "World Lock"))) +(!defun-from-collected-cold-init-forms !world-lock-cold-init) + +(defmacro with-world-lock (() &body body) + `(sb!thread:with-recursive-lock (**world-lock**) + ,@body)) + +(declaim (type fixnum *compiler-sset-counter*)) +(defvar *compiler-sset-counter* 0) + +;;; unique ID for the next object created (to let us track object +;;; identity even across GC, useful for understanding weird compiler +;;; bugs where something is supposed to be unique but is instead +;;; exists as duplicate objects) +#!+sb-show +(progn + (defvar *object-id-counter* 0) + (defun new-object-id () + (prog1 + *object-id-counter* + (incf *object-id-counter*)))) ;;;; miscellaneous utilities @@ -140,35 +159,106 @@ ;;; benefit of the compiler, but it's sometimes called from stuff like ;;; type-defining code which isn't logically part of the compiler. (declaim (ftype (function ((or symbol cons) keyword) (values)) - note-name-defined)) + note-name-defined)) (defun note-name-defined (name kind) ;; We do this BOUNDP check because this function can be called when - ;; not in a compilation unit (as when loading top-level forms). + ;; not in a compilation unit (as when loading top level forms). (when (boundp '*undefined-warnings*) (setq *undefined-warnings* - (delete-if (lambda (x) - (and (equal (undefined-warning-name x) name) - (eq (undefined-warning-kind x) kind))) - *undefined-warnings*))) + (delete-if (lambda (x) + (and (equal (undefined-warning-name x) name) + (eq (undefined-warning-kind x) kind))) + *undefined-warnings*))) (values)) ;;; to be called when a variable is lexically bound (declaim (ftype (function (symbol) (values)) note-lexical-binding)) (defun note-lexical-binding (symbol) - (let ((name (symbol-name symbol))) - ;; This check is intended to protect us from getting silently burned when - ;; we define + ;; This check is intended to protect us from getting silently + ;; burned when we define ;; foo.lisp: - ;; (DEFVAR *FOO*) - ;; (DEFUN FOO (X) (1+ X *FOO*)) + ;; (DEFVAR *FOO* -3) + ;; (DEFUN FOO (X) (+ X *FOO*)) ;; bar.lisp: ;; (DEFUN BAR (X) ;; (LET ((*FOO* X)) ;; (FOO 14))) ;; and then we happen to compile bar.lisp before foo.lisp. - (when (and (char= #\* (aref name 0)) - (char= #\* (aref name (1- (length name))))) - (style-warn "using the lexical binding of the symbol ~S, not the~@ -dynamic binding, even though the symbol name follows the usual naming~@ -convention (names like *FOO*) for special variables" symbol))) + (when (looks-like-name-of-special-var-p symbol) + ;; FIXME: should be COMPILER-STYLE-WARNING? + (style-warn 'sb!kernel:asterisks-around-lexical-variable-name + :format-control + "using the lexical binding of the symbol ~ + ~/sb-impl::print-symbol-with-prefix/, not the~@ + dynamic binding" + :format-arguments (list symbol))) (values)) + +(def!struct (debug-name-marker (:make-load-form-fun dump-debug-name-marker) + (:print-function print-debug-name-marker))) + +(defvar *debug-name-level* 4) +(defvar *debug-name-length* 12) +(defvar *debug-name-punt*) +(defvar *debug-name-sharp*) +(defvar *debug-name-ellipsis*) + +(eval-when (#-sb-xc :compile-toplevel :load-toplevel :execute) + (defun dump-debug-name-marker (marker &optional env) + (declare (ignore env)) + (cond ((eq marker *debug-name-sharp*) + `(if (boundp '*debug-name-sharp*) + *debug-name-sharp* + (make-debug-name-marker))) + ((eq marker *debug-name-ellipsis*) + `(if (boundp '*debug-name-ellipsis*) + *debug-name-ellipsis* + (make-debug-name-marker))) + (t + (warn "Dumping unknown debug-name marker.") + '(make-debug-name-marker))))) + +(defun print-debug-name-marker (marker stream level) + (declare (ignore level)) + (cond ((eq marker *debug-name-sharp*) + (write-char #\# stream)) + ((eq marker *debug-name-ellipsis*) + (write-string "..." stream)) + (t + (write-string "???" stream)))) + +(setf *debug-name-sharp* (make-debug-name-marker) + *debug-name-ellipsis* (make-debug-name-marker)) + +(defun debug-name (type thing &optional context) + (let ((*debug-name-punt* nil)) + (labels ((walk (x) + (typecase x + (cons + (if (plusp *debug-name-level*) + (let ((*debug-name-level* (1- *debug-name-level*))) + (do ((tail (cdr x) (cdr tail)) + (name (cons (walk (car x)) nil) + (cons (walk (car tail)) name)) + (n (1- *debug-name-length*) (1- n))) + ((or (not (consp tail)) + (not (plusp n)) + *debug-name-punt*) + (cond (*debug-name-punt* + (setf *debug-name-punt* nil) + (nreverse name)) + ((atom tail) + (nconc (nreverse name) (walk tail))) + (t + (setf *debug-name-punt* t) + (nconc (nreverse name) (list *debug-name-ellipsis*))))))) + *debug-name-sharp*)) + ((or symbol number string) + x) + (t + (type-of x))))) + (let ((name (list* type (walk thing) (when context (name-context))))) + (when (legal-fun-name-p name) + (bug "~S is a legal function name, and cannot be used as a ~ + debug name." name)) + name))))