X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;ds=sidebyside;f=src%2Fcompiler%2Fearly-c.lisp;h=b51bf8b6c0c492baa36e615c868df8dce1d57aca;hb=b63c4fb9b98fa8188e17ba926e150ba417a74635;hp=4e75b2353ed9d4da71d7fdccd28a7951682c7fe0;hpb=64bf93a97814ea1caf62bbdcc7ef43e2fbfc8f73;p=sbcl.git diff --git a/src/compiler/early-c.lisp b/src/compiler/early-c.lisp index 4e75b23..b51bf8b 100644 --- a/src/compiler/early-c.lisp +++ b/src/compiler/early-c.lisp @@ -15,11 +15,33 @@ (in-package "SB!C") -;;; FIXME: Shouldn't SB!C::&MORE be in this list? -(defconstant-eqx 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 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 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 most-positive-fixnum + #!+sb-doc + "The exclusive upper bound on the number of multiple VALUES that you can + return.") + +(defconstant-eqx sb!xc:lambda-list-keywords + '(&allow-other-keys + &aux + &body + &environment + &key + &more + &optional + &rest + &whole) #'equal + #!+sb-doc "symbols which are magical in a lambda list") ;;;; cross-compiler-only versions of CL special variables, so that we @@ -38,62 +60,6 @@ ;;; 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::policy-quality () '(or (rational 0 3) null)) - -;;;; policy stuff - -;;; a map from optimization policy quality to corresponding POLICY -;;; slot name, used to automatically keep POLICY-related definitions -;;; in sync even if future maintenance changes POLICY slots -(eval-when (:compile-toplevel :load-toplevel :execute) - (defstruct (policy-quality-slot (:constructor %make-pqs (quality accessor))) - ;; the name of the quality - (quality (required-argument) :type symbol) - ;; the name of the structure slot accessor - (accessor (required-argument) :type symbol)) - (defparameter *policy-quality-slots* - (list (%make-pqs 'speed 'policy-speed) - (%make-pqs 'space 'policy-space) - (%make-pqs 'safety 'policy-safety) - (%make-pqs 'cspeed 'policy-cspeed) - (%make-pqs 'brevity 'policy-brevity) - (%make-pqs 'debug 'policy-debug))) - (defun named-policy-quality-slot (name) - (find name *policy-quality-slots* :key #'policy-quality-slot-quality))) - -;;; A POLICY object holds information about the compilation policy for -;;; a node. See the LEXENV definition for a description of how it is used. -#.`(def!struct (policy - (:copier nil)) ; (but see DEFUN COPY-POLICY) - ,@(mapcar (lambda (pqs) - `(,(policy-quality-slot-quality pqs) nil - :type policy-quality)) - *policy-quality-slots*)) - -;;; an annoyingly hairy way of doing COPY-STRUCTURE on POLICY objects -;;; -;;; (We need this explicit, separate, hairy DEFUN only because we need -;;; to be able to copy POLICY objects 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).) -#.`(defun copy-policy (policy) - (make-policy - ,@(mapcan (lambda (pqs) - `(,(keywordicate (policy-quality-slot-quality pqs)) - (,(policy-quality-slot-accessor pqs) policy))) - *policy-quality-slots*))) - -;;; *DEFAULT-POLICY* 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-POLICY* holds any values specified by an -;;; OPTIMIZE-INTERFACE declaration. -(declaim (type policy *default-policy* *default-interface-policy*)) -(defvar *default-policy*) ; initialized in cold init -(defvar *default-interface-policy*) ; initialized in cold init ;;; possible values for the INLINE-ness of a function. (deftype inlinep () @@ -103,22 +69,28 @@ (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*) @@ -129,18 +101,21 @@ (defvar *compiler-warning-count*) (defvar *compiler-style-warning-count*) (defvar *compiler-note-count*) -(defvar *converting-for-interpreter*) +(defvar *compiler-trace-output*) +(defvar *constraint-number*) (defvar *count-vop-usages*) (defvar *current-path*) (defvar *current-component*) -(defvar *default-policy*) -(defvar *default-interface-policy*) +(defvar *delayed-ir1-transforms*) +(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*) (defvar *lexenv*) @@ -148,6 +123,23 @@ (defvar *trace-table*) (defvar *undefined-warnings*) (defvar *warnings-p*) + +;;; This lock is seized in the compiler, and related areas: the +;;; compiler is not presently thread-safe +(defvar *big-compiler-lock* + (sb!thread:make-mutex :name "big compiler lock")) + +;;; 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 @@ -158,7 +150,7 @@ 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) @@ -170,7 +162,6 @@ ;;; 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 ;; foo.lisp: @@ -181,10 +172,65 @@ ;; (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))))) - ;; FIXME: should be COMPILER-STYLE-WARNING? - (style-warn "using the lexical binding of the symbol ~S, not the~@ + (when (looks-like-name-of-special-var-p symbol) + ;; FIXME: should be COMPILER-STYLE-WARNING? + (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))) +convention (names like *FOO*) for special variables" symbol)) (values)) + +;;; Hacky (duplicating machinery found elsewhere because this function +;;; turns out to be on a critical path in the compiler) shorthand for +;;; creating debug names from source names or other stems, e.g. +;;; +;;; (DEBUG-NAMIFY "FLET " SOURCE-NAME) -> "FLET FOO:BAR" +;;; (DEBUG-NAMIFY "top level form " FORM) -> "top level form (QUUX :FOO)" +;;; +;;; If ALT is given it must be a string -- it is then used in place of +;;; either HEAD or TAIL if either of them is EQ to SB-C::.ANONYMOUS. +;;; +(declaim (inline debug-namify)) +(defun debug-namify (head tail &optional alt) + (declare (type (or null string) alt)) + (flet ((symbol-debug-name (symbol) + ;; KLUDGE: (OAOOM warning) very much akin to OUTPUT-SYMBOL. + (if (and alt (eq '.anonymous. symbol)) + alt + (let ((package (symbol-package symbol)) + (name (symbol-name symbol))) + (cond + ((eq package *keyword-package*) + (concatenate 'string ":" name)) + ((eq package *cl-package*) + name) + ((null package) + (concatenate 'string "#:" name)) + (t + (multiple-value-bind (symbol status) + (find-symbol name package) + (declare (ignore symbol)) + (concatenate 'string + (package-name package) + (if (eq status :external) ":" "::") + name)))))))) + (cond ((and (stringp head) (stringp tail)) + (concatenate 'string head tail)) + ((and (stringp head) (symbolp tail)) + (concatenate 'string head (symbol-debug-name tail))) + ((and (symbolp head) (stringp tail)) + (concatenate 'string (symbol-debug-name head) tail)) + (t + (macrolet ((out (obj s) + `(typecase ,obj + (string (write-string ,obj ,s)) + (symbol (write-string (symbol-debug-name ,obj) ,s)) + (t (prin1 ,obj ,s))))) + (with-standard-io-syntax + (let ((*print-readably* nil) + (*print-pretty* nil) + (*package* *cl-package*) + (*print-length* 3) + (*print-level* 2)) + (with-output-to-string (s) + (out head s) + (out tail s)))))))))