X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=src%2Fcompiler%2Fir1-translators.lisp;h=e82b3a486e6181146f89a09bf625e18a355bf620;hb=6a8fb906ba96395f2a60f821b2ec7649a2a3ae46;hp=ccb901f9dc8ec10399f59262d0bdf5010f0e83f5;hpb=a52bbbda8ae06f5b501dd0d40c60d89f96d5471c;p=sbcl.git diff --git a/src/compiler/ir1-translators.lisp b/src/compiler/ir1-translators.lisp index ccb901f..e82b3a4 100644 --- a/src/compiler/ir1-translators.lisp +++ b/src/compiler/ir1-translators.lisp @@ -35,6 +35,8 @@ (node (make-if :test pred :consequent then-block :alternative else-block))) + ;; IR1-CONVERT-MAYBE-PREDICATE requires DEST to be CIF, so the + ;; order of the following two forms is important (setf (continuation-dest pred) node) (ir1-convert start pred test) (link-node-to-previous-continuation node pred) @@ -259,37 +261,38 @@ ;;; shared by the special-case top level MACROLET processing code, and ;;; further split so that the special-case MACROLET processing code in ;;; EVAL can likewise make use of it. -(defmacro macrolet-definitionize-fun (context lexenv) - (flet ((make-error-form (control &rest args) +(defun macrolet-definitionize-fun (context lexenv) + (flet ((fail (control &rest args) (ecase context - (:compile `(compiler-error ,control ,@args)) - (:eval `(error 'simple-program-error - :format-control ,control - :format-arguments (list ,@args)))))) - `(lambda (definition) + (:compile (apply #'compiler-error control args)) + (:eval (error 'simple-program-error + :format-control control + :format-arguments args))))) + (lambda (definition) (unless (list-of-length-at-least-p definition 2) - ,(make-error-form "The list ~S is too short to be a legal local macro definition." 'definition)) + (fail "The list ~S is too short to be a legal local macro definition." + definition)) (destructuring-bind (name arglist &body body) definition - (unless (symbolp name) - ,(make-error-form "The local macro name ~S is not a symbol." 'name)) - (unless (listp arglist) - ,(make-error-form "The local macro argument list ~S is not a list." 'arglist)) - (let ((whole (gensym "WHOLE")) - (environment (gensym "ENVIRONMENT"))) - (multiple-value-bind (body local-decls) - (parse-defmacro arglist whole body name 'macrolet - :environment environment) - `(,name macro . - ,(compile-in-lexenv - nil - `(lambda (,whole ,environment) - ,@local-decls - (block ,name ,body)) - ,lexenv)))))))) - -(defun funcall-in-macrolet-lexenv (definitions fun) + (unless (symbolp name) + (fail "The local macro name ~S is not a symbol." name)) + (unless (listp arglist) + (fail "The local macro argument list ~S is not a list." + arglist)) + (with-unique-names (whole environment) + (multiple-value-bind (body local-decls) + (parse-defmacro arglist whole body name 'macrolet + :environment environment) + `(,name macro . + ,(compile-in-lexenv + nil + `(lambda (,whole ,environment) + ,@local-decls + ,body) + lexenv)))))))) + +(defun funcall-in-macrolet-lexenv (definitions fun context) (%funcall-in-foomacrolet-lexenv - (macrolet-definitionize-fun :compile (make-restricted-lexenv *lexenv*)) + (macrolet-definitionize-fun context (make-restricted-lexenv *lexenv*)) :funs definitions fun)) @@ -304,33 +307,31 @@ definitions (lambda (&key funs) (declare (ignore funs)) - (ir1-translate-locally body start cont)))) + (ir1-translate-locally body start cont)) + :compile)) -(defmacro symbol-macrolet-definitionize-fun (context) - (flet ((make-error-form (control &rest args) +(defun symbol-macrolet-definitionize-fun (context) + (flet ((fail (control &rest args) (ecase context - (:compile `(compiler-error ,control ,@args)) - (:eval `(error 'simple-program-error - :format-control ,control - :format-arguments (list ,@args)))))) - `(lambda (definition) + (:compile (apply #'compiler-error control args)) + (:eval (error 'simple-program-error + :format-control control + :format-arguments args))))) + (lambda (definition) (unless (proper-list-of-length-p definition 2) - ,(make-error-form "malformed symbol/expansion pair: ~S" 'definition)) - (destructuring-bind (name expansion) definition - (unless (symbolp name) - ,(make-error-form - "The local symbol macro name ~S is not a symbol." - 'name)) - (let ((kind (info :variable :kind name))) - (when (member kind '(:special :constant)) - ,(make-error-form - "Attempt to bind a ~(~A~) variable with SYMBOL-MACROLET: ~S" - 'kind 'name))) - `(,name . (MACRO . ,expansion))))))1 - -(defun funcall-in-symbol-macrolet-lexenv (definitions fun) + (fail "malformed symbol/expansion pair: ~S" definition)) + (destructuring-bind (name expansion) definition + (unless (symbolp name) + (fail "The local symbol macro name ~S is not a symbol." name)) + (let ((kind (info :variable :kind name))) + (when (member kind '(:special :constant)) + (fail "Attempt to bind a ~(~A~) variable with SYMBOL-MACROLET: ~S" + kind name))) + `(,name . (MACRO . ,expansion)))))) + +(defun funcall-in-symbol-macrolet-lexenv (definitions fun context) (%funcall-in-foomacrolet-lexenv - (symbol-macrolet-definitionize-fun :compile) + (symbol-macrolet-definitionize-fun context) :vars definitions fun)) @@ -343,16 +344,8 @@ (funcall-in-symbol-macrolet-lexenv macrobindings (lambda (&key vars) - (ir1-translate-locally body start cont :vars vars)))) - -;;; not really a special form, but.. -(def-ir1-translator declare ((&rest stuff) start cont) - (declare (ignore stuff)) - ;; We ignore START and CONT too, but we can't use DECLARE IGNORE to - ;; tell the compiler about it here, because the DEF-IR1-TRANSLATOR - ;; macro would put the DECLARE in the wrong place, so.. - start cont - (compiler-error "misplaced declaration")) + (ir1-translate-locally body start cont :vars vars)) + :compile)) ;;;; %PRIMITIVE ;;;; @@ -427,68 +420,29 @@ (reference-constant start cont thing)) ;;;; FUNCTION and NAMED-LAMBDA +(defun fun-name-leaf (thing) + (if (consp thing) + (cond + ((member (car thing) + '(lambda named-lambda instance-lambda lambda-with-lexenv)) + (ir1-convert-lambdalike + thing + :debug-name (debug-namify "#'~S" thing) + :allow-debug-catch-tag t)) + ((legal-fun-name-p thing) + (find-lexically-apparent-fun + thing "as the argument to FUNCTION")) + (t + (compiler-error "~S is not a legal function name." thing))) + (find-lexically-apparent-fun + thing "as the argument to FUNCTION"))) (def-ir1-translator function ((thing) start cont) #!+sb-doc "FUNCTION Name Return the lexically apparent definition of the function Name. Name may also be a lambda expression." - (if (consp thing) - (case (car thing) - ((lambda) - (reference-leaf start - cont - (ir1-convert-lambda thing - :debug-name (debug-namify - "#'~S" thing)))) - ((setf) - (let ((var (find-lexically-apparent-fun - thing "as the argument to FUNCTION"))) - (reference-leaf start cont var))) - ((instance-lambda) - (let ((res (ir1-convert-lambda `(lambda ,@(cdr thing)) - :debug-name (debug-namify "#'~S" - thing)))) - (setf (getf (functional-plist res) :fin-function) t) - (reference-leaf start cont res))) - (t - (compiler-error "~S is not a legal function name." thing))) - (let ((var (find-lexically-apparent-fun - thing "as the argument to FUNCTION"))) - (reference-leaf start cont var)))) - -;;; `(NAMED-LAMBDA ,NAME ,@REST) is like `(FUNCTION (LAMBDA ,@REST)), -;;; except that the value of NAME is passed to the compiler for use in -;;; creation of debug information for the resulting function. -;;; -;;; NAME can be a legal function name or some arbitrary other thing. -;;; -;;; If NAME is a legal function name, then the caller should be -;;; planning to set (FDEFINITION NAME) to the created function. -;;; (Otherwise the debug names will be inconsistent and thus -;;; unnecessarily confusing.) -;;; -;;; Arbitrary other things are appropriate for naming things which are -;;; not the FDEFINITION of NAME. E.g. -;;; NAME = (:FLET FOO BAR) -;;; for the FLET function in -;;; (DEFUN BAR (X) -;;; (FLET ((FOO (Y) (+ X Y))) -;;; FOO)) -;;; or -;;; NAME = (:METHOD PRINT-OBJECT :AROUND (STARSHIP T)) -;;; for the function used to implement -;;; (DEFMETHOD PRINT-OBJECT :AROUND ((SS STARSHIP) STREAM) ...). -(def-ir1-translator named-lambda ((name &rest rest) start cont) - (let* ((fun (if (legal-fun-name-p name) - (ir1-convert-lambda `(lambda ,@rest) - :source-name name) - (ir1-convert-lambda `(lambda ,@rest) - :debug-name name))) - (leaf (reference-leaf start cont fun))) - (when (legal-fun-name-p name) - (assert-global-function-definition-type name fun)) - leaf)) + (reference-leaf start cont (fun-name-leaf thing))) ;;;; FUNCALL @@ -505,10 +459,11 @@ ,@arg-names)))) (def-ir1-translator %funcall ((function &rest args) start cont) - (let ((fun-cont (make-continuation))) - (ir1-convert start fun-cont function) - (assert-continuation-type fun-cont (specifier-type 'function)) - (ir1-convert-combination-args fun-cont cont args))) + (if (and (consp function) (eq (car function) 'function)) + (ir1-convert start cont `(,(fun-name-leaf (second function)) ,@args)) + (let ((fun-cont (make-continuation))) + (ir1-convert start fun-cont `(the function ,function)) + (ir1-convert-combination-args fun-cont cont args)))) ;;; This source transform exists to reduce the amount of work for the ;;; compiler. If the called function is a FUNCTION form, then convert @@ -574,15 +529,17 @@ During evaluation of the Forms, bind the Vars to the result of evaluating the Value forms. The variables are bound in parallel after all of the Values are evaluated." - (multiple-value-bind (forms decls) (parse-body body nil) - (multiple-value-bind (vars values) (extract-let-vars bindings 'let) - (let ((fun-cont (make-continuation))) - (let* ((*lexenv* (process-decls decls vars nil cont)) - (fun (ir1-convert-lambda-body - forms vars - :debug-name (debug-namify "LET ~S" bindings)))) - (reference-leaf start fun-cont fun)) - (ir1-convert-combination-args fun-cont cont values))))) + (if (null bindings) + (ir1-translate-locally body start cont) + (multiple-value-bind (forms decls) (parse-body body nil) + (multiple-value-bind (vars values) (extract-let-vars bindings 'let) + (let ((fun-cont (make-continuation))) + (let* ((*lexenv* (process-decls decls vars nil cont)) + (fun (ir1-convert-lambda-body + forms vars + :debug-name (debug-namify "LET ~S" bindings)))) + (reference-leaf start fun-cont fun)) + (ir1-convert-combination-args fun-cont cont values)))))) (def-ir1-translator let* ((bindings &body body) start cont) @@ -606,7 +563,7 @@ (declare (type list body) (type continuation start cont)) (multiple-value-bind (forms decls) (parse-body body nil) (let ((*lexenv* (process-decls decls vars funs cont))) - (ir1-convert-aux-bindings start cont forms nil nil)))) + (ir1-convert-progn-body start cont forms)))) (def-ir1-translator locally ((&body body) start cont) #!+sb-doc @@ -656,7 +613,8 @@ (ir1-convert-lambda d :source-name n :debug-name (debug-namify - "FLET ~S" n))) + "FLET ~S" n) + :allow-debug-catch-tag t)) names defs)) (*lexenv* (make-lexenv :default (process-decls decls nil fvars cont) @@ -691,7 +649,8 @@ (ir1-convert-lambda def :source-name name :debug-name (debug-namify - "LABELS ~S" name))) + "LABELS ~S" name) + :allow-debug-catch-tag t)) names defs)))) ;; Modify all the references to the dummy function leaves so @@ -713,88 +672,48 @@ ;;;; the THE special operator, and friends -;;; Do stuff to recognize a THE or VALUES declaration. CONT is the -;;; continuation that the assertion applies to, TYPE is the type -;;; specifier and LEXENV is the current lexical environment. NAME is -;;; the name of the declaration we are doing, for use in error -;;; messages. -;;; -;;; This is somewhat involved, since a type assertion may only be made -;;; on a continuation, not on a node. We can't just set the -;;; continuation asserted type and let it go at that, since there may -;;; be parallel THE's for the same continuation, i.e. -;;; (if ... -;;; (the foo ...) -;;; (the bar ...)) -;;; -;;; In this case, our representation can do no better than the union -;;; of these assertions. And if there is a branch with no assertion, -;;; we have nothing at all. We really need to recognize scoping, since -;;; we need to be able to discern between parallel assertions (which -;;; we union) and nested ones (which we intersect). -;;; -;;; We represent the scoping by throwing our innermost (intersected) -;;; assertion on CONT into the TYPE-RESTRICTIONS. As we go down, we -;;; intersect our assertions together. If CONT has no uses yet, we -;;; have not yet bottomed out on the first COND branch; in this case -;;; we optimistically assume that this type will be the one we end up -;;; with, and set the ASSERTED-TYPE to it. We can never get better -;;; than the type that we have the first time we bottom out. Later -;;; THE's (or the absence thereof) can only weaken this result. -;;; -;;; We make this work by getting USE-CONTINUATION to do the unioning -;;; across COND branches. We can't do it here, since we don't know how -;;; many branches there are going to be. -(defun ir1ize-the-or-values (type cont lexenv place) - (declare (type continuation cont) (type lexenv lexenv)) - (let* ((ctype (if (typep type 'ctype) type (compiler-values-specifier-type type))) - (old-type (or (lexenv-find cont type-restrictions) - *wild-type*)) - (intersects (values-types-equal-or-intersect old-type ctype)) - (new (values-type-intersection old-type ctype))) - (when (null (find-uses cont)) - (setf (continuation-asserted-type cont) new)) - (when (and (not intersects) - ;; FIXME: Is it really right to look at *LEXENV* here, - ;; instead of looking at the LEXENV argument? Why? - (not (policy *lexenv* - (= inhibit-warnings 3)))) ;FIXME: really OK to suppress? - (compiler-warn - "The type ~S ~A conflicts with an enclosing assertion:~% ~S" - (type-specifier ctype) - place - (type-specifier old-type))) - (make-lexenv :type-restrictions `((,cont . ,new)) - :default lexenv))) +;;; A logic shared among THE and TRULY-THE. +(defun the-in-policy (type value policy start cont) + (let ((type (if (ctype-p type) type + (compiler-values-specifier-type type)))) + (cond ((or (eq type *wild-type*) + (eq type *universal-type*) + (and (leaf-p value) + (values-subtypep (make-single-value-type (leaf-type value)) + type)) + (and (sb!xc:constantp value) + (ctypep (constant-form-value value) + (single-value-type type)))) + (ir1-convert start cont value)) + (t (let ((value-cont (make-continuation))) + (ir1-convert start value-cont value) + (let ((cast (make-cast value-cont type policy))) + (link-node-to-previous-continuation cast value-cont) + (setf (continuation-dest value-cont) cast) + (use-continuation cast cont))))))) ;;; Assert that FORM evaluates to the specified type (which may be a -;;; VALUES type). -;;; -;;; FIXME: In a version of CMU CL that I used at Cadabra ca. 20000101, -;;; this didn't seem to expand into an assertion, at least for ALIEN -;;; values. Check that SBCL doesn't have this problem. +;;; VALUES type). TYPE may be a type specifier or (as a hack) a CTYPE. (def-ir1-translator the ((type value) start cont) - (with-continuation-type-assertion (cont (compiler-values-specifier-type type) - "in THE declaration") - (ir1-convert start cont value))) + (the-in-policy type value (lexenv-policy *lexenv*) start cont)) ;;; This is like the THE special form, except that it believes ;;; whatever you tell it. It will never generate a type check, but ;;; will cause a warning if the compiler can prove the assertion is ;;; wrong. -;;; -;;; Since the CONTINUATION-DERIVED-TYPE is computed as the union of -;;; its uses's types, setting it won't work. Instead we must intersect -;;; the type with the uses's DERIVED-TYPE. (def-ir1-translator truly-the ((type value) start cont) #!+sb-doc + "" (declare (inline member)) - (let ((type (compiler-values-specifier-type type)) + #-nil + (let ((type (coerce-to-values (compiler-values-specifier-type type))) (old (find-uses cont))) (ir1-convert start cont value) (do-uses (use cont) (unless (member use old :test #'eq) - (derive-node-type use type))))) + (derive-node-type use type)))) + #+nil + (the-in-policy type value '((type-check . 0)) start cont)) ;;;; SETQ @@ -826,6 +745,7 @@ (setq-var start cont leaf (second things))) (cons (aver (eq (car leaf) 'MACRO)) + ;; FIXME: [Free] type declaration. -- APD, 2002-01-26 (ir1-convert start cont `(setf ,(cdr leaf) ,(second things)))) (heap-alien-info (ir1-convert start cont @@ -840,9 +760,10 @@ ;;; This should only need to be called in SETQ. (defun setq-var (start cont var value) (declare (type continuation start cont) (type basic-var var)) - (let ((dest (make-continuation))) - (setf (continuation-asserted-type dest) (leaf-type var)) - (ir1-convert start dest value) + (let ((dest (make-continuation)) + (type (or (lexenv-find var type-restrictions) + (leaf-type var)))) + (ir1-convert start dest `(the ,type ,value)) (let ((res (make-set :var var :value dest))) (setf (continuation-dest dest) res) (setf (leaf-ever-used var) t) @@ -852,7 +773,7 @@ ;;;; CATCH, THROW and UNWIND-PROTECT -;;; We turn THROW into a multiple-value-call of a magical function, +;;; We turn THROW into a MULTIPLE-VALUE-CALL of a magical function, ;;; since as as far as IR1 is concerned, it has no interesting ;;; properties other than receiving multiple-values. (def-ir1-translator throw ((tag result) start cont) @@ -909,45 +830,40 @@ (setf (functional-kind fun) :cleanup) (reference-leaf start cont fun))) -;;; We represent the possibility of the control transfer by making an -;;; "escape function" that does a lexical exit, and instantiate the -;;; cleanup using %WITHIN-CLEANUP. (def-ir1-translator catch ((tag &body body) start cont) #!+sb-doc "Catch Tag Form* - Evaluates Tag and instantiates it as a catcher while the body forms are - evaluated in an implicit PROGN. If a THROW is done to Tag within the dynamic + Evaluate TAG and instantiate it as a catcher while the body forms are + evaluated in an implicit PROGN. If a THROW is done to TAG within the dynamic scope of the body, then control will be transferred to the end of the body and the thrown values will be returned." + ;; We represent the possibility of the control transfer by making an + ;; "escape function" that does a lexical exit, and instantiate the + ;; cleanup using %WITHIN-CLEANUP. (ir1-convert start cont - (let ((exit-block (gensym "EXIT-BLOCK-"))) + (with-unique-names (exit-block) `(block ,exit-block (%within-cleanup :catch (%catch (%escape-fun ,exit-block) ,tag) ,@body))))) -;;; UNWIND-PROTECT is similar to CATCH, but hairier. We make the -;;; cleanup forms into a local function so that they can be referenced -;;; both in the case where we are unwound and in any local exits. We -;;; use %CLEANUP-FUN on this to indicate that reference by -;;; %UNWIND-PROTECT isn't "real", and thus doesn't cause creation of -;;; an XEP. (def-ir1-translator unwind-protect ((protected &body cleanup) start cont) #!+sb-doc "Unwind-Protect Protected Cleanup* - Evaluate the form Protected, returning its values. The cleanup forms are - evaluated whenever the dynamic scope of the Protected form is exited (either + Evaluate the form PROTECTED, returning its values. The CLEANUP forms are + evaluated whenever the dynamic scope of the PROTECTED form is exited (either due to normal completion or a non-local exit such as THROW)." + ;; UNWIND-PROTECT is similar to CATCH, but hairier. We make the + ;; cleanup forms into a local function so that they can be referenced + ;; both in the case where we are unwound and in any local exits. We + ;; use %CLEANUP-FUN on this to indicate that reference by + ;; %UNWIND-PROTECT isn't "real", and thus doesn't cause creation of + ;; an XEP. (ir1-convert start cont - (let ((cleanup-fun (gensym "CLEANUP-FUN-")) - (drop-thru-tag (gensym "DROP-THRU-TAG-")) - (exit-tag (gensym "EXIT-TAG-")) - (next (gensym "NEXT")) - (start (gensym "START")) - (count (gensym "COUNT"))) + (with-unique-names (cleanup-fun drop-thru-tag exit-tag next start count) `(flet ((,cleanup-fun () ,@cleanup nil)) ;; FIXME: If we ever get DYNAMIC-EXTENT working, then ;; ,CLEANUP-FUN should probably be declared DYNAMIC-EXTENT, @@ -966,29 +882,28 @@ ;;;; multiple-value stuff -;;; If there are arguments, MULTIPLE-VALUE-CALL turns into an -;;; MV-COMBINATION. -;;; -;;; If there are no arguments, then we convert to a normal -;;; combination, ensuring that a MV-COMBINATION always has at least -;;; one argument. This can be regarded as an optimization, but it is -;;; more important for simplifying compilation of MV-COMBINATIONS. (def-ir1-translator multiple-value-call ((fun &rest args) start cont) #!+sb-doc "MULTIPLE-VALUE-CALL Function Values-Form* - Call Function, passing all the values of each Values-Form as arguments, - values from the first Values-Form making up the first argument, etc." + Call FUNCTION, passing all the values of each VALUES-FORM as arguments, + values from the first VALUES-FORM making up the first argument, etc." (let* ((fun-cont (make-continuation)) (node (if args + ;; If there are arguments, MULTIPLE-VALUE-CALL + ;; turns into an MV-COMBINATION. (make-mv-combination fun-cont) + ;; If there are no arguments, then we convert to a + ;; normal combination, ensuring that a MV-COMBINATION + ;; always has at least one argument. This can be + ;; regarded as an optimization, but it is more + ;; important for simplifying compilation of + ;; MV-COMBINATIONS. (make-combination fun-cont)))) (ir1-convert start fun-cont (if (and (consp fun) (eq (car fun) 'function)) fun `(%coerce-callable-to-fun ,fun))) (setf (continuation-dest fun-cont) node) - (assert-continuation-type fun-cont - (specifier-type '(or function symbol))) (collect ((arg-conts)) (let ((this-start fun-cont)) (dolist (arg args) @@ -1037,10 +952,7 @@ (continuation-starts-block dummy-start) (ir1-convert start dummy-start result) - (with-continuation-type-assertion - (cont (continuation-asserted-type dummy-start) - "of the first form") - (substitute-continuation-uses cont dummy-start)) + (substitute-continuation-uses cont dummy-start) (continuation-starts-block dummy-result) (ir1-convert-progn-body dummy-start dummy-result forms) @@ -1054,20 +966,17 @@ ;;;; interface to defining macros -;;;; FIXME: -;;;; classic CMU CL comment: -;;;; DEFMACRO and DEFUN expand into calls to %DEFxxx functions -;;;; so that we get a chance to see what is going on. We define -;;;; IR1 translators for these functions which look at the -;;;; definition and then generate a call to the %%DEFxxx function. -;;;; Alas, this implementation doesn't do the right thing for -;;;; non-toplevel uses of these forms, so this should probably -;;;; be changed to use EVAL-WHEN instead. - -;;; Return a new source path with any stuff intervening between the -;;; current path and the first form beginning with NAME stripped off. -;;; This is used to hide the guts of DEFmumble macros to prevent -;;; annoying error messages. +;;; Old CMUCL comment: +;;; +;;; Return a new source path with any stuff intervening between the +;;; current path and the first form beginning with NAME stripped +;;; off. This is used to hide the guts of DEFmumble macros to +;;; prevent annoying error messages. +;;; +;;; Now that we have implementations of DEFmumble macros in terms of +;;; EVAL-WHEN, this function is no longer used. However, it might be +;;; worth figuring out why it was used, and maybe doing analogous +;;; munging to the functions created in the expanders for the macros. (defun revert-source-path (name) (do ((path *current-path* (cdr path))) ((null path) *current-path*) @@ -1075,28 +984,3 @@ (when (or (eq first name) (eq first 'original-source-start)) (return path))))) - -(def-ir1-translator %define-compiler-macro ((name def lambda-list doc) - start cont - :kind :function) - (let ((name (eval name)) - (def (second def))) ; We don't want to make a function just yet... - - (when (eq (info :function :kind name) :special-form) - (compiler-error "attempt to define a compiler-macro for special form ~S" - name)) - - (setf (info :function :compiler-macro-function name) - (coerce def 'function)) - - (let* ((*current-path* (revert-source-path 'define-compiler-macro)) - (fun (ir1-convert-lambda def - :debug-name (debug-namify - "DEFINE-COMPILER-MACRO ~S" - name)))) - (setf (functional-arg-documentation fun) (eval lambda-list)) - - (ir1-convert start cont `(%%define-compiler-macro ',name ,fun ,doc))) - - (when sb!xc:*compile-print* - (compiler-mumble "~&; converted ~S~%" name))))