X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=src%2Fcompiler%2Fsrctran.lisp;h=f9b0161ea2392f07b699e4345aae598211866de3;hb=ad1aa2961d81ed8db9dac59068c6861199c29a3a;hp=35b35b19cbbef59cf115599c43897181dcb20001;hpb=2d75f4246b8451a9c2c95cd36673d98c82c9845f;p=sbcl.git diff --git a/src/compiler/srctran.lisp b/src/compiler/srctran.lisp index 35b35b1..f9b0161 100644 --- a/src/compiler/srctran.lisp +++ b/src/compiler/srctran.lisp @@ -15,22 +15,22 @@ ;;; Convert into an IF so that IF optimizations will eliminate redundant ;;; negations. -(def-source-transform not (x) `(if ,x nil t)) -(def-source-transform null (x) `(if ,x nil t)) +(define-source-transform not (x) `(if ,x nil t)) +(define-source-transform null (x) `(if ,x nil t)) ;;; ENDP is just NULL with a LIST assertion. The assertion will be ;;; optimized away when SAFETY optimization is low; hopefully that ;;; is consistent with ANSI's "should return an error". -(def-source-transform endp (x) `(null (the list ,x))) +(define-source-transform endp (x) `(null (the list ,x))) ;;; We turn IDENTITY into PROG1 so that it is obvious that it just ;;; returns the first value of its argument. Ditto for VALUES with one ;;; arg. -(def-source-transform identity (x) `(prog1 ,x)) -(def-source-transform values (x) `(prog1 ,x)) +(define-source-transform identity (x) `(prog1 ,x)) +(define-source-transform values (x) `(prog1 ,x)) ;;; Bind the values and make a closure that returns them. -(def-source-transform constantly (value) +(define-source-transform constantly (value) (let ((rest (gensym "CONSTANTLY-REST-"))) `(lambda (&rest ,rest) (declare (ignore ,rest)) @@ -40,10 +40,10 @@ ;;; lambda with the appropriate fixed number of args. If the ;;; destination is a FUNCALL, then do the &REST APPLY thing, and let ;;; MV optimization figure things out. -(deftransform complement ((fun) * * :node node :when :both) +(deftransform complement ((fun) * * :node node) "open code" (multiple-value-bind (min max) - (function-type-nargs (continuation-type fun)) + (fun-type-nargs (continuation-type fun)) (cond ((and min (eql min max)) (let ((dums (make-gensym-list min))) @@ -62,7 +62,7 @@ ;;; Translate CxR into CAR/CDR combos. (defun source-transform-cxr (form) - (if (or (byte-compiling) (/= (length form) 2)) + (if (/= (length form) 2) (values nil t) (let ((name (symbol-name (car form)))) (do ((i (- (length name) 2) (1- i)) @@ -97,31 +97,31 @@ ;;; whatever is right for them is right for us. FIFTH..TENTH turn into ;;; Nth, which can be expanded into a CAR/CDR later on if policy ;;; favors it. -(def-source-transform first (x) `(car ,x)) -(def-source-transform rest (x) `(cdr ,x)) -(def-source-transform second (x) `(cadr ,x)) -(def-source-transform third (x) `(caddr ,x)) -(def-source-transform fourth (x) `(cadddr ,x)) -(def-source-transform fifth (x) `(nth 4 ,x)) -(def-source-transform sixth (x) `(nth 5 ,x)) -(def-source-transform seventh (x) `(nth 6 ,x)) -(def-source-transform eighth (x) `(nth 7 ,x)) -(def-source-transform ninth (x) `(nth 8 ,x)) -(def-source-transform tenth (x) `(nth 9 ,x)) +(define-source-transform first (x) `(car ,x)) +(define-source-transform rest (x) `(cdr ,x)) +(define-source-transform second (x) `(cadr ,x)) +(define-source-transform third (x) `(caddr ,x)) +(define-source-transform fourth (x) `(cadddr ,x)) +(define-source-transform fifth (x) `(nth 4 ,x)) +(define-source-transform sixth (x) `(nth 5 ,x)) +(define-source-transform seventh (x) `(nth 6 ,x)) +(define-source-transform eighth (x) `(nth 7 ,x)) +(define-source-transform ninth (x) `(nth 8 ,x)) +(define-source-transform tenth (x) `(nth 9 ,x)) ;;; Translate RPLACx to LET and SETF. -(def-source-transform rplaca (x y) +(define-source-transform rplaca (x y) (once-only ((n-x x)) `(progn (setf (car ,n-x) ,y) ,n-x))) -(def-source-transform rplacd (x y) +(define-source-transform rplacd (x y) (once-only ((n-x x)) `(progn (setf (cdr ,n-x) ,y) ,n-x))) -(def-source-transform nth (n l) `(car (nthcdr ,n ,l))) +(define-source-transform nth (n l) `(car (nthcdr ,n ,l))) (defvar *default-nthcdr-open-code-limit* 6) (defvar *extreme-nthcdr-open-code-limit* 20) @@ -145,21 +145,21 @@ ;;;; arithmetic and numerology -(def-source-transform plusp (x) `(> ,x 0)) -(def-source-transform minusp (x) `(< ,x 0)) -(def-source-transform zerop (x) `(= ,x 0)) +(define-source-transform plusp (x) `(> ,x 0)) +(define-source-transform minusp (x) `(< ,x 0)) +(define-source-transform zerop (x) `(= ,x 0)) -(def-source-transform 1+ (x) `(+ ,x 1)) -(def-source-transform 1- (x) `(- ,x 1)) +(define-source-transform 1+ (x) `(+ ,x 1)) +(define-source-transform 1- (x) `(- ,x 1)) -(def-source-transform oddp (x) `(not (zerop (logand ,x 1)))) -(def-source-transform evenp (x) `(zerop (logand ,x 1))) +(define-source-transform oddp (x) `(not (zerop (logand ,x 1)))) +(define-source-transform evenp (x) `(zerop (logand ,x 1))) ;;; Note that all the integer division functions are available for ;;; inline expansion. (macrolet ((deffrob (fun) - `(def-source-transform ,fun (x &optional (y nil y-p)) + `(define-source-transform ,fun (x &optional (y nil y-p)) (declare (ignore y)) (if y-p (values nil t) @@ -171,29 +171,30 @@ #-sb-xc-host ; (See CROSS-FLOAT-INFINITY-KLUDGE.) (deffrob ceiling)) -(def-source-transform lognand (x y) `(lognot (logand ,x ,y))) -(def-source-transform lognor (x y) `(lognot (logior ,x ,y))) -(def-source-transform logandc1 (x y) `(logand (lognot ,x) ,y)) -(def-source-transform logandc2 (x y) `(logand ,x (lognot ,y))) -(def-source-transform logorc1 (x y) `(logior (lognot ,x) ,y)) -(def-source-transform logorc2 (x y) `(logior ,x (lognot ,y))) -(def-source-transform logtest (x y) `(not (zerop (logand ,x ,y)))) -(def-source-transform logbitp (index integer) +(define-source-transform lognand (x y) `(lognot (logand ,x ,y))) +(define-source-transform lognor (x y) `(lognot (logior ,x ,y))) +(define-source-transform logandc1 (x y) `(logand (lognot ,x) ,y)) +(define-source-transform logandc2 (x y) `(logand ,x (lognot ,y))) +(define-source-transform logorc1 (x y) `(logior (lognot ,x) ,y)) +(define-source-transform logorc2 (x y) `(logior ,x (lognot ,y))) +(define-source-transform logtest (x y) `(not (zerop (logand ,x ,y)))) +(define-source-transform logbitp (index integer) `(not (zerop (logand (ash 1 ,index) ,integer)))) -(def-source-transform byte (size position) `(cons ,size ,position)) -(def-source-transform byte-size (spec) `(car ,spec)) -(def-source-transform byte-position (spec) `(cdr ,spec)) -(def-source-transform ldb-test (bytespec integer) +(define-source-transform byte (size position) + `(cons ,size ,position)) +(define-source-transform byte-size (spec) `(car ,spec)) +(define-source-transform byte-position (spec) `(cdr ,spec)) +(define-source-transform ldb-test (bytespec integer) `(not (zerop (mask-field ,bytespec ,integer)))) ;;; With the ratio and complex accessors, we pick off the "identity" ;;; case, and use a primitive to handle the cell access case. -(def-source-transform numerator (num) +(define-source-transform numerator (num) (once-only ((n-num `(the rational ,num))) `(if (ratiop ,n-num) (%numerator ,n-num) ,n-num))) -(def-source-transform denominator (num) +(define-source-transform denominator (num) (once-only ((n-num `(the rational ,num))) `(if (ratiop ,n-num) (%denominator ,n-num) @@ -355,11 +356,11 @@ (defun interval-bounded-p (x how) (declare (type interval x)) (ecase how - ('above + (above (interval-high x)) - ('below + (below (interval-low x)) - ('both + (both (and (interval-low x) (interval-high x))))) ;;; signed zero comparison functions. Use these functions if we need @@ -630,7 +631,7 @@ :low (bound-mul (interval-low x) (interval-low y)) :high (bound-mul (interval-high x) (interval-high y)))) (t - (error "internal error in INTERVAL-MUL")))))) + (bug "excluded case in INTERVAL-MUL")))))) ;;; Divide two intervals. (defun interval-div (top bot) @@ -680,7 +681,7 @@ :low (bound-div (interval-low top) (interval-high bot) t) :high (bound-div (interval-high top) (interval-low bot) nil))) (t - (error "internal error in INTERVAL-DIV")))))) + (bug "excluded case in INTERVAL-DIV")))))) ;;; Apply the function F to the interval X. If X = [a, b], then the ;;; result is [f(a), f(b)]. It is up to the user to make sure the @@ -732,9 +733,9 @@ (defun interval-abs (x) (declare (type interval x)) (case (interval-range-info x) - ('+ + (+ (copy-interval x)) - ('- + (- (interval-neg x)) (t (destructuring-bind (x- x+) (interval-split 0 x t t) @@ -1354,14 +1355,14 @@ (flet ((ash-outer (n s) (when (and (fixnump s) (<= s 64) - (> s sb!vm:*target-most-negative-fixnum*)) + (> s sb!xc:most-negative-fixnum)) (ash n s))) ;; KLUDGE: The bare 64's here should be related to ;; symbolic machine word size values somehow. (ash-inner (n s) (if (and (fixnump s) - (> s sb!vm:*target-most-negative-fixnum*)) + (> s sb!xc:most-negative-fixnum)) (ash n (min s 64)) (if (minusp n) -1 0)))) (or (and (csubtypep n-type (specifier-type 'integer)) @@ -1647,7 +1648,7 @@ ;;; Define optimizers for FLOOR and CEILING. (macrolet - ((frob-opt (name q-name r-name) + ((def (name q-name r-name) (let ((q-aux (symbolicate q-name "-AUX")) (r-aux (symbolicate r-name "-AUX"))) `(progn @@ -1711,54 +1712,52 @@ (when (and quot rem) (make-values-type :required (list quot rem)))))))))) - ;; FIXME: DEF-FROB-OPT, not just FROB-OPT - (frob-opt floor floor-quotient-bound floor-rem-bound) - (frob-opt ceiling ceiling-quotient-bound ceiling-rem-bound)) + (def floor floor-quotient-bound floor-rem-bound) + (def ceiling ceiling-quotient-bound ceiling-rem-bound)) ;;; Define optimizers for FFLOOR and FCEILING -(macrolet - ((frob-opt (name q-name r-name) - (let ((q-aux (symbolicate "F" q-name "-AUX")) - (r-aux (symbolicate r-name "-AUX"))) - `(progn - ;; Compute type of quotient (first) result. - (defun ,q-aux (number-type divisor-type) - (let* ((number-interval - (numeric-type->interval number-type)) - (divisor-interval - (numeric-type->interval divisor-type)) - (quot (,q-name (interval-div number-interval - divisor-interval))) - (res-type (numeric-contagion number-type divisor-type))) - (make-numeric-type - :class (numeric-type-class res-type) - :format (numeric-type-format res-type) - :low (interval-low quot) - :high (interval-high quot)))) - - (defoptimizer (,name derive-type) ((number divisor)) - (flet ((derive-q (n d same-arg) - (declare (ignore same-arg)) - (if (and (numeric-type-real-p n) - (numeric-type-real-p d)) - (,q-aux n d) - *empty-type*)) - (derive-r (n d same-arg) - (declare (ignore same-arg)) - (if (and (numeric-type-real-p n) - (numeric-type-real-p d)) - (,r-aux n d) - *empty-type*))) - (let ((quot (two-arg-derive-type - number divisor #'derive-q #',name)) - (rem (two-arg-derive-type - number divisor #'derive-r #'mod))) - (when (and quot rem) - (make-values-type :required (list quot rem)))))))))) - - ;; FIXME: DEF-FROB-OPT, not just FROB-OPT - (frob-opt ffloor floor-quotient-bound floor-rem-bound) - (frob-opt fceiling ceiling-quotient-bound ceiling-rem-bound)) +(macrolet ((def (name q-name r-name) + (let ((q-aux (symbolicate "F" q-name "-AUX")) + (r-aux (symbolicate r-name "-AUX"))) + `(progn + ;; Compute type of quotient (first) result. + (defun ,q-aux (number-type divisor-type) + (let* ((number-interval + (numeric-type->interval number-type)) + (divisor-interval + (numeric-type->interval divisor-type)) + (quot (,q-name (interval-div number-interval + divisor-interval))) + (res-type (numeric-contagion number-type + divisor-type))) + (make-numeric-type + :class (numeric-type-class res-type) + :format (numeric-type-format res-type) + :low (interval-low quot) + :high (interval-high quot)))) + + (defoptimizer (,name derive-type) ((number divisor)) + (flet ((derive-q (n d same-arg) + (declare (ignore same-arg)) + (if (and (numeric-type-real-p n) + (numeric-type-real-p d)) + (,q-aux n d) + *empty-type*)) + (derive-r (n d same-arg) + (declare (ignore same-arg)) + (if (and (numeric-type-real-p n) + (numeric-type-real-p d)) + (,r-aux n d) + *empty-type*))) + (let ((quot (two-arg-derive-type + number divisor #'derive-q #',name)) + (rem (two-arg-derive-type + number divisor #'derive-r #'mod))) + (when (and quot rem) + (make-values-type :required (list quot rem)))))))))) + + (def ffloor floor-quotient-bound floor-rem-bound) + (def fceiling ceiling-quotient-bound ceiling-rem-bound)) ;;; functions to compute the bounds on the quotient and remainder for ;;; the FLOOR function @@ -2298,8 +2297,8 @@ (defoptimizer (values derive-type) ((&rest values)) (values-specifier-type - `(values ,@(mapcar #'(lambda (x) - (type-specifier (continuation-type x))) + `(values ,@(mapcar (lambda (x) + (type-specifier (continuation-type x))) values)))) ;;;; byte operations @@ -2334,19 +2333,19 @@ `(let ((,,temp ,,spec)) ,,@body)))))) - (def-source-transform ldb (spec int) + (define-source-transform ldb (spec int) (with-byte-specifier (size pos spec) `(%ldb ,size ,pos ,int))) - (def-source-transform dpb (newbyte spec int) + (define-source-transform dpb (newbyte spec int) (with-byte-specifier (size pos spec) `(%dpb ,newbyte ,size ,pos ,int))) - (def-source-transform mask-field (spec int) + (define-source-transform mask-field (spec int) (with-byte-specifier (size pos spec) `(%mask-field ,size ,pos ,int))) - (def-source-transform deposit-field (newbyte spec int) + (define-source-transform deposit-field (newbyte spec int) (with-byte-specifier (size pos spec) `(%deposit-field ,newbyte ,size ,pos ,int)))) @@ -2355,7 +2354,7 @@ (if (and (numeric-type-p size) (csubtypep size (specifier-type 'integer))) (let ((size-high (numeric-type-high size))) - (if (and size-high (<= size-high sb!vm:word-bits)) + (if (and size-high (<= size-high sb!vm:n-word-bits)) (specifier-type `(unsigned-byte ,size-high)) (specifier-type 'unsigned-byte))) *universal-type*))) @@ -2370,7 +2369,7 @@ (let ((size-high (numeric-type-high size)) (posn-high (numeric-type-high posn))) (if (and size-high posn-high - (<= (+ size-high posn-high) sb!vm:word-bits)) + (<= (+ size-high posn-high) sb!vm:n-word-bits)) (specifier-type `(unsigned-byte ,(+ size-high posn-high))) (specifier-type 'unsigned-byte))) *universal-type*))) @@ -2390,7 +2389,7 @@ (high (numeric-type-high int)) (low (numeric-type-low int))) (if (and size-high posn-high high low - (<= (+ size-high posn-high) sb!vm:word-bits)) + (<= (+ size-high posn-high) sb!vm:n-word-bits)) (specifier-type (list (if (minusp low) 'signed-byte 'unsigned-byte) (max (integer-length high) @@ -2414,7 +2413,7 @@ (high (numeric-type-high int)) (low (numeric-type-low int))) (if (and size-high posn-high high low - (<= (+ size-high posn-high) sb!vm:word-bits)) + (<= (+ size-high posn-high) sb!vm:n-word-bits)) (specifier-type (list (if (minusp low) 'signed-byte 'unsigned-byte) (max (integer-length high) @@ -2425,19 +2424,19 @@ (deftransform %ldb ((size posn int) (fixnum fixnum integer) - (unsigned-byte #.sb!vm:word-bits)) + (unsigned-byte #.sb!vm:n-word-bits)) "convert to inline logical operations" `(logand (ash int (- posn)) - (ash ,(1- (ash 1 sb!vm:word-bits)) - (- size ,sb!vm:word-bits)))) + (ash ,(1- (ash 1 sb!vm:n-word-bits)) + (- size ,sb!vm:n-word-bits)))) (deftransform %mask-field ((size posn int) (fixnum fixnum integer) - (unsigned-byte #.sb!vm:word-bits)) + (unsigned-byte #.sb!vm:n-word-bits)) "convert to inline logical operations" `(logand int - (ash (ash ,(1- (ash 1 sb!vm:word-bits)) - (- size ,sb!vm:word-bits)) + (ash (ash ,(1- (ash 1 sb!vm:n-word-bits)) + (- size ,sb!vm:n-word-bits)) posn))) ;;; Note: for %DPB and %DEPOSIT-FIELD, we can't use @@ -2448,7 +2447,7 @@ (deftransform %dpb ((new size posn int) * - (unsigned-byte #.sb!vm:word-bits)) + (unsigned-byte #.sb!vm:n-word-bits)) "convert to inline logical operations" `(let ((mask (ldb (byte size 0) -1))) (logior (ash (logand new mask) posn) @@ -2456,7 +2455,7 @@ (deftransform %dpb ((new size posn int) * - (signed-byte #.sb!vm:word-bits)) + (signed-byte #.sb!vm:n-word-bits)) "convert to inline logical operations" `(let ((mask (ldb (byte size 0) -1))) (logior (ash (logand new mask) posn) @@ -2464,7 +2463,7 @@ (deftransform %deposit-field ((new size posn int) * - (unsigned-byte #.sb!vm:word-bits)) + (unsigned-byte #.sb!vm:n-word-bits)) "convert to inline logical operations" `(let ((mask (ash (ldb (byte size 0) -1) posn))) (logior (logand new mask) @@ -2472,7 +2471,7 @@ (deftransform %deposit-field ((new size posn int) * - (signed-byte #.sb!vm:word-bits)) + (signed-byte #.sb!vm:n-word-bits)) "convert to inline logical operations" `(let ((mask (ash (ldb (byte size 0) -1) posn))) (logior (logand new mask) @@ -2484,7 +2483,7 @@ (deftransform commutative-arg-swap ((x y) * * :defun-only t :node node) (if (and (constant-continuation-p x) (not (constant-continuation-p y))) - `(,(continuation-function-name (basic-combination-fun node)) + `(,(continuation-fun-name (basic-combination-fun node)) y ,(continuation-value x)) (give-up-ir1-transform))) @@ -2494,7 +2493,7 @@ "place constant arg last")) ;;; Handle the case of a constant BOOLE-CODE. -(deftransform boole ((op x y) * * :when :both) +(deftransform boole ((op x y) * *) "convert to inline logical operations" (unless (constant-continuation-p op) (give-up-ir1-transform "BOOLE code is not a constant.")) @@ -2523,7 +2522,7 @@ ;;;; converting special case multiply/divide to shifts ;;; If arg is a constant power of two, turn * into a shift. -(deftransform * ((x y) (integer integer) * :when :both) +(deftransform * ((x y) (integer integer) *) "convert x*2^k to shift" (unless (constant-continuation-p y) (give-up-ir1-transform)) @@ -2610,7 +2609,7 @@ (frob y t))) ;;; Do the same for MOD. -(deftransform mod ((x y) (integer integer) * :when :both) +(deftransform mod ((x y) (integer integer) *) "convert remainder mod 2^k to LOGAND" (unless (constant-continuation-p y) (give-up-ir1-transform)) @@ -2647,7 +2646,7 @@ (logand x ,mask)))))) ;;; And the same for REM. -(deftransform rem ((x y) (integer integer) * :when :both) +(deftransform rem ((x y) (integer integer) *) "convert remainder mod 2^k to LOGAND" (unless (constant-continuation-p y) (give-up-ir1-transform)) @@ -2665,29 +2664,24 @@ ;;; Flush calls to various arith functions that convert to the ;;; identity function or a constant. -;;; -;;; FIXME: Rewrite as DEF-FROB. -(dolist (stuff '((ash 0 x) - (logand -1 x) - (logand 0 0) - (logior 0 x) - (logior -1 -1) - (logxor -1 (lognot x)) - (logxor 0 x))) - (destructuring-bind (name identity result) stuff - (deftransform name ((x y) `(* (constant-argument (member ,identity))) '* - :eval-name t :when :both) - "fold identity operations" - result))) +(macrolet ((def (name identity result) + `(deftransform ,name ((x y) (* (constant-arg (member ,identity))) *) + "fold identity operations" + ',result))) + (def ash 0 x) + (def logand -1 x) + (def logand 0 0) + (def logior 0 x) + (def logior -1 -1) + (def logxor -1 (lognot x)) + (def logxor 0 x)) ;;; These are restricted to rationals, because (- 0 0.0) is 0.0, not -0.0, and ;;; (* 0 -4.0) is -0.0. -(deftransform - ((x y) ((constant-argument (member 0)) rational) * - :when :both) +(deftransform - ((x y) ((constant-arg (member 0)) rational) *) "convert (- 0 x) to negate" '(%negate y)) -(deftransform * ((x y) (rational (constant-argument (member 0))) * - :when :both) +(deftransform * ((x y) (rational (constant-arg (member 0))) *) "convert (* x 0) to 0" 0) @@ -2729,7 +2723,7 @@ ;;; ;;; If y is not constant, not zerop, or is contagious, or a positive ;;; float +0.0 then give up. -(deftransform + ((x y) (t (constant-argument t)) * :when :both) +(deftransform + ((x y) (t (constant-arg t)) *) "fold zero arg" (let ((val (continuation-value y))) (unless (and (zerop val) @@ -2742,7 +2736,7 @@ ;;; ;;; If y is not constant, not zerop, or is contagious, or a negative ;;; float -0.0 then give up. -(deftransform - ((x y) (t (constant-argument t)) * :when :both) +(deftransform - ((x y) (t (constant-arg t)) *) "fold zero arg" (let ((val (continuation-value y))) (unless (and (zerop val) @@ -2752,22 +2746,21 @@ 'x) ;;; Fold (OP x +/-1) -(dolist (stuff '((* x (%negate x)) - (/ x (%negate x)) - (expt x (/ 1 x)))) - (destructuring-bind (name result minus-result) stuff - (deftransform name ((x y) '(t (constant-argument real)) '* :eval-name t - :when :both) - "fold identity operations" - (let ((val (continuation-value y))) - (unless (and (= (abs val) 1) - (not-more-contagious y x)) - (give-up-ir1-transform)) - (if (minusp val) minus-result result))))) +(macrolet ((def (name result minus-result) + `(deftransform ,name ((x y) (t (constant-arg real)) *) + "fold identity operations" + (let ((val (continuation-value y))) + (unless (and (= (abs val) 1) + (not-more-contagious y x)) + (give-up-ir1-transform)) + (if (minusp val) ',minus-result ',result))))) + (def * x (%negate x)) + (def / x (%negate x)) + (def expt x (/ 1 x))) ;;; Fold (expt x n) into multiplications for small integral values of ;;; N; convert (expt x 1/2) to sqrt. -(deftransform expt ((x y) (t (constant-argument real)) *) +(deftransform expt ((x y) (t (constant-arg real)) *) "recode as multiplication or sqrt" (let ((val (continuation-value y))) ;; If Y would cause the result to be promoted to the same type as @@ -2788,21 +2781,24 @@ ;;; KLUDGE: Shouldn't (/ 0.0 0.0), etc. cause exceptions in these ;;; transformations? ;;; Perhaps we should have to prove that the denominator is nonzero before -;;; doing them? (Also the DOLIST over macro calls is weird. Perhaps -;;; just FROB?) -- WHN 19990917 -;;; -;;; FIXME: What gives with the single quotes in the argument lists -;;; for DEFTRANSFORMs here? Does that work? Is it needed? Why? -(dolist (name '(ash /)) - (deftransform name ((x y) '((constant-argument (integer 0 0)) integer) '* - :eval-name t :when :both) - "fold zero arg" - 0)) -(dolist (name '(truncate round floor ceiling)) - (deftransform name ((x y) '((constant-argument (integer 0 0)) integer) '* - :eval-name t :when :both) - "fold zero arg" - '(values 0 0))) +;;; doing them? -- WHN 19990917 +(macrolet ((def (name) + `(deftransform ,name ((x y) ((constant-arg (integer 0 0)) integer) + *) + "fold zero arg" + 0))) + (def ash) + (def /)) + +(macrolet ((def (name) + `(deftransform ,name ((x y) ((constant-arg (integer 0 0)) integer) + *) + "fold zero arg" + '(values 0 0)))) + (def truncate) + (def round) + (def floor) + (def ceiling)) ;;;; character operations @@ -2850,8 +2846,7 @@ ;;; if there is no intersection between the types of the arguments, ;;; then the result is definitely false. (deftransform simple-equality-transform ((x y) * * - :defun-only t - :when :both) + :defun-only t) (cond ((same-leaf-ref-p x y) t) ((not (types-equal-or-intersect (continuation-type x) @@ -2860,8 +2855,11 @@ (t (give-up-ir1-transform)))) -(dolist (x '(eq char= equal)) - (%deftransform x '(function * *) #'simple-equality-transform)) +(macrolet ((def (x) + `(%deftransform ',x '(function * *) #'simple-equality-transform))) + (def eq) + (def char=) + (def equal)) ;;; This is similar to SIMPLE-EQUALITY-PREDICATE, except that we also ;;; try to convert to a type-specific predicate or EQ: @@ -2876,7 +2874,7 @@ ;;; these interesting cases. ;;; -- If Y is a fixnum, then we quietly pass because the back end can ;;; handle that case, otherwise give an efficiency note. -(deftransform eql ((x y) * * :when :both) +(deftransform eql ((x y) * *) "convert to simpler equality predicate" (let ((x-type (continuation-type x)) (y-type (continuation-type y)) @@ -2902,7 +2900,7 @@ ;;; Convert to EQL if both args are rational and complexp is specified ;;; and the same for both. -(deftransform = ((x y) * * :when :both) +(deftransform = ((x y) * *) "open code" (let ((x-type (continuation-type x)) (y-type (continuation-type y))) @@ -2980,18 +2978,18 @@ (t (give-up-ir1-transform)))))) -(deftransform < ((x y) (integer integer) * :when :both) +(deftransform < ((x y) (integer integer) *) (ir1-transform-< x y x y '>)) -(deftransform > ((x y) (integer integer) * :when :both) +(deftransform > ((x y) (integer integer) *) (ir1-transform-< y x x y '<)) #-sb-xc-host ; (See CROSS-FLOAT-INFINITY-KLUDGE.) -(deftransform < ((x y) (float float) * :when :both) +(deftransform < ((x y) (float float) *) (ir1-transform-< x y x y '>)) #-sb-xc-host ; (See CROSS-FLOAT-INFINITY-KLUDGE.) -(deftransform > ((x y) (float float) * :when :both) +(deftransform > ((x y) (float float) *) (ir1-transform-< y x x y '<)) ;;;; converting N-arg comparisons @@ -3031,31 +3029,31 @@ ((zerop i) `((lambda ,vars ,result) . ,args))))))) -(def-source-transform = (&rest args) (multi-compare '= args nil)) -(def-source-transform < (&rest args) (multi-compare '< args nil)) -(def-source-transform > (&rest args) (multi-compare '> args nil)) -(def-source-transform <= (&rest args) (multi-compare '> args t)) -(def-source-transform >= (&rest args) (multi-compare '< args t)) +(define-source-transform = (&rest args) (multi-compare '= args nil)) +(define-source-transform < (&rest args) (multi-compare '< args nil)) +(define-source-transform > (&rest args) (multi-compare '> args nil)) +(define-source-transform <= (&rest args) (multi-compare '> args t)) +(define-source-transform >= (&rest args) (multi-compare '< args t)) -(def-source-transform char= (&rest args) (multi-compare 'char= args nil)) -(def-source-transform char< (&rest args) (multi-compare 'char< args nil)) -(def-source-transform char> (&rest args) (multi-compare 'char> args nil)) -(def-source-transform char<= (&rest args) (multi-compare 'char> args t)) -(def-source-transform char>= (&rest args) (multi-compare 'char< args t)) +(define-source-transform char= (&rest args) (multi-compare 'char= args nil)) +(define-source-transform char< (&rest args) (multi-compare 'char< args nil)) +(define-source-transform char> (&rest args) (multi-compare 'char> args nil)) +(define-source-transform char<= (&rest args) (multi-compare 'char> args t)) +(define-source-transform char>= (&rest args) (multi-compare 'char< args t)) -(def-source-transform char-equal (&rest args) +(define-source-transform char-equal (&rest args) (multi-compare 'char-equal args nil)) -(def-source-transform char-lessp (&rest args) +(define-source-transform char-lessp (&rest args) (multi-compare 'char-lessp args nil)) -(def-source-transform char-greaterp (&rest args) +(define-source-transform char-greaterp (&rest args) (multi-compare 'char-greaterp args nil)) -(def-source-transform char-not-greaterp (&rest args) +(define-source-transform char-not-greaterp (&rest args) (multi-compare 'char-greaterp args t)) -(def-source-transform char-not-lessp (&rest args) +(define-source-transform char-not-lessp (&rest args) (multi-compare 'char-lessp args t)) ;;; This function does source transformation of N-arg inequality -;;; functions such as /=. This is similar to Multi-Compare in the <3 +;;; functions such as /=. This is similar to MULTI-COMPARE in the <3 ;;; arg cases. If there are more than two args, then we expand into ;;; the appropriate n^2 comparisons only when speed is important. (declaim (ftype (function (symbol list) *) multi-not-equal)) @@ -3080,20 +3078,20 @@ (dolist (v2 next) (setq result `(if (,predicate ,v1 ,v2) nil ,result)))))))))) -(def-source-transform /= (&rest args) (multi-not-equal '= args)) -(def-source-transform char/= (&rest args) (multi-not-equal 'char= args)) -(def-source-transform char-not-equal (&rest args) +(define-source-transform /= (&rest args) (multi-not-equal '= args)) +(define-source-transform char/= (&rest args) (multi-not-equal 'char= args)) +(define-source-transform char-not-equal (&rest args) (multi-not-equal 'char-equal args)) ;;; Expand MAX and MIN into the obvious comparisons. -(def-source-transform max (arg &rest more-args) +(define-source-transform max (arg &rest more-args) (if (null more-args) `(values ,arg) (once-only ((arg1 arg) (arg2 `(max ,@more-args))) `(if (> ,arg1 ,arg2) ,arg1 ,arg2)))) -(def-source-transform min (arg &rest more-args) +(define-source-transform min (arg &rest more-args) (if (null more-args) `(values ,arg) (once-only ((arg1 arg) @@ -3107,13 +3105,13 @@ ;;;; versions, and degenerate cases are flushed. ;;; Left-associate FIRST-ARG and MORE-ARGS using FUNCTION. -(declaim (ftype (function (symbol t list) list) associate-arguments)) -(defun associate-arguments (function first-arg more-args) +(declaim (ftype (function (symbol t list) list) associate-args)) +(defun associate-args (function first-arg more-args) (let ((next (rest more-args)) (arg (first more-args))) (if (null next) `(,function ,first-arg ,arg) - (associate-arguments function `(,function ,first-arg ,arg) next)))) + (associate-args function `(,function ,first-arg ,arg) next)))) ;;; Do source transformations for transitive functions such as +. ;;; One-arg cases are replaced with the arg and zero arg cases with @@ -3128,18 +3126,20 @@ `(,leaf-fun ,(first args) ,(second args)) (values nil t))) (t - (associate-arguments fun (first args) (rest args))))) + (associate-args fun (first args) (rest args))))) -(def-source-transform + (&rest args) (source-transform-transitive '+ args 0)) -(def-source-transform * (&rest args) (source-transform-transitive '* args 1)) -(def-source-transform logior (&rest args) +(define-source-transform + (&rest args) + (source-transform-transitive '+ args 0)) +(define-source-transform * (&rest args) + (source-transform-transitive '* args 1)) +(define-source-transform logior (&rest args) (source-transform-transitive 'logior args 0)) -(def-source-transform logxor (&rest args) +(define-source-transform logxor (&rest args) (source-transform-transitive 'logxor args 0)) -(def-source-transform logand (&rest args) +(define-source-transform logand (&rest args) (source-transform-transitive 'logand args -1)) -(def-source-transform logeqv (&rest args) +(define-source-transform logeqv (&rest args) (if (evenp (length args)) `(lognot (logxor ,@args)) `(logxor ,@args))) @@ -3148,19 +3148,19 @@ ;;; because when they are given one argument, they return its absolute ;;; value. -(def-source-transform gcd (&rest args) +(define-source-transform gcd (&rest args) (case (length args) (0 0) (1 `(abs (the integer ,(first args)))) (2 (values nil t)) - (t (associate-arguments 'gcd (first args) (rest args))))) + (t (associate-args 'gcd (first args) (rest args))))) -(def-source-transform lcm (&rest args) +(define-source-transform lcm (&rest args) (case (length args) (0 1) (1 `(abs (the integer ,(first args)))) (2 (values nil t)) - (t (associate-arguments 'lcm (first args) (rest args))))) + (t (associate-args 'lcm (first args) (rest args))))) ;;; Do source transformations for intransitive n-arg functions such as ;;; /. With one arg, we form the inverse. With two args we pass. @@ -3170,11 +3170,11 @@ (case (length args) ((0 2) (values nil t)) (1 `(,@inverse ,(first args))) - (t (associate-arguments function (first args) (rest args))))) + (t (associate-args function (first args) (rest args))))) -(def-source-transform - (&rest args) +(define-source-transform - (&rest args) (source-transform-intransitive '- args '(%negate))) -(def-source-transform / (&rest args) +(define-source-transform / (&rest args) (source-transform-intransitive '/ args '(/ 1))) ;;;; transforming APPLY @@ -3182,11 +3182,11 @@ ;;; We convert APPLY into MULTIPLE-VALUE-CALL so that the compiler ;;; only needs to understand one kind of variable-argument call. It is ;;; more efficient to convert APPLY to MV-CALL than MV-CALL to APPLY. -(def-source-transform apply (fun arg &rest more-args) +(define-source-transform apply (fun arg &rest more-args) (let ((args (cons arg more-args))) `(multiple-value-call ,fun - ,@(mapcar #'(lambda (x) - `(values ,x)) + ,@(mapcar (lambda (x) + `(values ,x)) (butlast args)) (values-list ,(car (last args))))))