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transforms.lisp
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;;;; Copyright (c) 2017 Henry Harrington <henry.harrington@gmail.com>
;;;; This code is licensed under the MIT license.
(in-package :sys.c)
(defun apply-transforms (lambda target-architecture)
(apply-transforms-1 lambda target-architecture))
(defgeneric apply-transforms-1 (form target-architecture))
(defmethod apply-transforms-1 ((form lexical-variable) target-architecture)
form)
(defmethod apply-transforms-1 ((form lambda-information) target-architecture)
(let ((*current-lambda* form))
(dolist (arg (lambda-information-optional-args form))
(setf (second arg) (apply-transforms-1 (second arg) target-architecture)))
(dolist (arg (lambda-information-key-args form))
(setf (second arg) (apply-transforms-1 (second arg) target-architecture)))
(setf (lambda-information-body form)
(apply-transforms-1 (lambda-information-body form) target-architecture)))
form)
(defmethod apply-transforms-1 ((form ast-call) target-architecture)
(let* ((matching-transform (match-transform form 't target-architecture))
(new-form (if matching-transform
(apply-transform matching-transform (arguments form) form)
nil)))
(cond (new-form
(change-made)
new-form)
(t
(setf (arguments form) (loop
for arg in (arguments form)
collect (apply-transforms-1 arg target-architecture)))
form))))
(defmethod apply-transforms-1 ((form ast-block) target-architecture)
(setf (body form) (apply-transforms-1 (body form) target-architecture))
form)
(defmethod apply-transforms-1 ((form ast-function) target-architecture)
(declare (ignore target-architecture))
form)
(defmethod apply-transforms-1 ((form ast-go) target-architecture)
(setf (info form) (apply-transforms-1 (info form) target-architecture))
form)
(defmethod apply-transforms-1 ((form ast-if) target-architecture)
(setf (test form) (apply-transforms-1 (test form) target-architecture)
(if-then form) (apply-transforms-1 (if-then form) target-architecture)
(if-else form) (apply-transforms-1 (if-else form) target-architecture))
form)
(defmethod apply-transforms-1 ((form ast-let) target-architecture)
(setf (bindings form) (loop
for (var initform) in (bindings form)
collect (list var (apply-transforms-1 initform target-architecture))))
(setf (body form) (apply-transforms-1 (body form) target-architecture))
form)
(defmethod apply-transforms-1 ((form ast-multiple-value-bind) target-architecture)
(setf (value-form form) (apply-transforms-1 (value-form form) target-architecture)
(body form) (apply-transforms-1 (body form) target-architecture))
form)
(defmethod apply-transforms-1 ((form ast-multiple-value-call) target-architecture)
(setf (function-form form) (apply-transforms-1 (function-form form) target-architecture)
(value-form form) (apply-transforms-1 (value-form form) target-architecture))
form)
(defmethod apply-transforms-1 ((form ast-multiple-value-prog1) target-architecture)
(setf (value-form form) (apply-transforms-1 (value-form form) target-architecture)
(body form) (apply-transforms-1 (body form) target-architecture))
form)
(defmethod apply-transforms-1 ((form ast-progn) target-architecture)
(setf (forms form) (loop
for subform in (forms form)
collect (apply-transforms-1 subform target-architecture)))
form)
(defmethod apply-transforms-1 ((form ast-quote) target-architecture)
(declare (ignore target-architecture))
form)
(defmethod apply-transforms-1 ((form ast-return-from) target-architecture)
(setf (value form) (apply-transforms-1 (value form) target-architecture)
(info form) (apply-transforms-1 (info form) target-architecture))
form)
(defmethod apply-transforms-1 ((form ast-setq) target-architecture)
(setf (value form) (apply-transforms-1 (value form) target-architecture))
form)
(defmethod apply-transforms-1 ((form ast-tagbody) target-architecture)
(setf (statements form)
(loop
for (go-tag statement) in (statements form)
collect (list go-tag (apply-transforms-1 statement target-architecture))))
form)
(defmethod apply-transforms-1 ((form ast-the) target-architecture)
(cond ((typep (value form) 'ast-call)
(let* ((matching-transform (match-transform (value form) (the-type form) target-architecture))
(new-form (if matching-transform
(apply-transform matching-transform
(arguments (value form))
(value form))
nil)))
(cond (new-form
(change-made)
(setf (value form) new-form))
(t
(setf (value form) (apply-transforms-1 (value form) target-architecture))))))
(t
(setf (value form) (apply-transforms-1 (value form) target-architecture))))
form)
(defmethod apply-transforms-1 ((form ast-unwind-protect) target-architecture)
(setf (protected-form form) (apply-transforms-1 (protected-form form) target-architecture))
(setf (cleanup-function form) (apply-transforms-1 (cleanup-function form) target-architecture))
form)
(defmethod apply-transforms-1 ((form ast-jump-table) target-architecture)
(setf (value form) (apply-transforms-1 (value form) target-architecture))
(setf (targets form) (kt-implicit-progn (targets form) target-architecture))
form)
(defclass transform ()
((%function :initarg :function :reader transform-function)
(%lambda-list :initarg :lambda-list :reader transform-lambda-list)
(%argument-types :initarg :argument-types :reader transform-argument-types)
(%result-type :initarg :result-type :reader transform-result-type)
(%optimize :initarg :optimize :reader transform-optimize)
(%architecture :initarg :architecture :reader transform-architecture)
(%body :initarg :body :reader transform-body)
(%documentation :initarg :documentation :reader transform-documentation))
(:default-initargs
:result-type 't
:optimize '()
:architecture 't
:documentation nil))
(defmethod print-object ((object transform) stream)
(print-unreadable-object (object stream :type t :identity t)
(format stream "~S ~S -> ~S"
(transform-function object)
(mapcar #'list (transform-lambda-list object) (transform-argument-types object))
(transform-result-type object))))
(defvar *transforms* '())
(defmacro define-transform (function lambda-list options &body body)
(let ((lambda-parameters (loop
for l in lambda-list
collect (if (symbolp l)
l
(first l)))))
`(register-transform (make-instance 'transform
:function ',function
:lambda-list ',lambda-parameters
:argument-types ',(loop
for l in lambda-list
collect (if (symbolp l)
't
(or (second l) 't)))
:body (lambda ,lambda-parameters
(declare (ignorable ,@lambda-parameters))
,@body)
,@(loop for (option . rest) in options
collect option
collect (ecase option
(:documentation `',(first rest))
(:result-type `',(first rest))
(:optimize `',rest)
(:architecture `',rest)))))))
(defun register-transform (transform)
(push transform *transforms*))
(defun match-optimize-settings (call optimize-qualities)
(dolist (setting optimize-qualities
t)
(when (not (funcall (first setting)
(if (integerp (second setting))
(second setting)
(optimize-quality call (second setting)))
(if (integerp (third setting))
(third setting)
(optimize-quality call (third setting)))))
(return nil))))
(defun match-transform-type (transform-type type)
(and (not (compiler-subtypep type 'nil))
(compiler-subtypep type transform-type)))
(defun match-transform-argument (transform-type argument)
(cond ((eql transform-type 't))
((typep argument 'ast-the)
(match-transform-type transform-type (the-type argument)))
((typep argument 'ast-quote)
(typep (value argument) transform-type))))
(defun match-one-transform (transform call result-type target-architecture)
(and (equal (transform-function transform) (ast-name call))
(or (eql (transform-architecture transform) 't)
(member target-architecture (transform-architecture transform)))
(match-optimize-settings call (transform-optimize transform))
(match-transform-type (transform-result-type transform) result-type)
(eql (length (arguments call)) (length (transform-lambda-list transform)))
(every #'match-transform-argument
(transform-argument-types transform)
(arguments call))))
(defun match-transform (call result-type target-architecture)
(dolist (transform *transforms* nil)
(when (match-one-transform transform call result-type target-architecture)
(return transform))))
(defun apply-transform (transform arguments inherit)
;; Enforce left-to-right order of evaluation for arguments.
(let* ((temps (loop
for arg in arguments
collect (make-instance 'lexical-variable
:inherit arg
:name (gensym)
:definition-point *current-lambda*
:use-count 1)))
(new-form (apply (transform-body transform) temps)))
(if new-form
(ast `(let ,(loop
for temp in temps
for arg in arguments
collect (list temp arg))
,new-form)
inherit)
nil)))
;;; Unboxed fixnum arithmetic.
;;; These only apply at safety 0 as they can produce invalid values which
;;; can damage the system.
(defmacro define-fast-fixnum-transform-arith-two-arg (binary-fn fast-fn &key (result 'fixnum))
`(define-transform ,binary-fn ((lhs fixnum) (rhs fixnum))
((:result-type ,result)
(:optimize (= safety 0) (= speed 3)))
`(the fixnum (call ,',fast-fn ,lhs ,rhs))))
(define-fast-fixnum-transform-arith-two-arg sys.int::binary-+ %fast-fixnum-+)
(define-fast-fixnum-transform-arith-two-arg sys.int::binary-- %fast-fixnum--)
(define-fast-fixnum-transform-arith-two-arg sys.int::binary-* %fast-fixnum-*)
(define-fast-fixnum-transform-arith-two-arg sys.int::%truncate %fast-fixnum-truncate)
(define-fast-fixnum-transform-arith-two-arg rem %fast-fixnum-rem)
(define-fast-fixnum-transform-arith-two-arg sys.int::binary-logior %fast-fixnum-logior :result t)
(define-fast-fixnum-transform-arith-two-arg sys.int::binary-logxor %fast-fixnum-logxor :result t)
(define-fast-fixnum-transform-arith-two-arg sys.int::binary-logand %fast-fixnum-logand :result t)
(define-fast-fixnum-transform-arith-two-arg mezzano.runtime::%fixnum-left-shift %fast-fixnum-left-shift)
;;; Fixnum comparisons.
(define-transform sys.int::binary-= ((lhs fixnum) (rhs fixnum))
((:optimize (= safety 0) (= speed 3)))
`(call eq ,lhs ,rhs))
(define-transform sys.int::binary-< ((lhs fixnum) (rhs fixnum))
((:optimize (= safety 0) (= speed 3)))
`(call mezzano.runtime::%fixnum-< ,lhs ,rhs))
(define-transform sys.int::binary->= ((lhs fixnum) (rhs fixnum))
((:optimize (= safety 0) (= speed 3)))
`(call not (call mezzano.runtime::%fixnum-< ,lhs ,rhs)))
(define-transform sys.int::binary-> ((lhs fixnum) (rhs fixnum))
((:optimize (= safety 0) (= speed 3)))
`(call mezzano.runtime::%fixnum-< ,rhs ,lhs))
(define-transform sys.int::binary-<= ((lhs fixnum) (rhs fixnum))
((:optimize (= safety 0) (= speed 3)))
`(call not (call mezzano.runtime::%fixnum-< ,rhs ,lhs)))
;;; Single-Float arithmetic.
(defmacro define-fast-single-float-transform-arith-two-arg (binary-fn fast-fn)
`(define-transform ,binary-fn ((lhs single-float) (rhs single-float))
((:optimize (= safety 0) (= speed 3)))
`(the single-float (call ,',fast-fn ,lhs ,rhs))))
(define-fast-single-float-transform-arith-two-arg sys.int::binary-+ sys.int::%%single-float-+)
(define-fast-single-float-transform-arith-two-arg sys.int::binary-- sys.int::%%single-float--)
(define-fast-single-float-transform-arith-two-arg sys.int::binary-* sys.int::%%single-float-*)
(define-fast-single-float-transform-arith-two-arg sys.int::binary-/ sys.int::%%single-float-/)
(define-transform float ((number fixnum) (prototype single-float))
((:optimize (= safety 0) (= speed 3)))
`(the single-float
(call mezzano.runtime::%%coerce-fixnum-to-single-float ,number)))
(define-transform float ((number fixnum))
((:optimize (= safety 0) (= speed 3)))
`(the single-float (call mezzano.runtime::%%coerce-fixnum-to-single-float ,number)))
(define-transform sys.int::binary-= ((lhs single-float) (rhs single-float))
((:optimize (= safety 0) (= speed 3)))
`(call eq ,lhs ,rhs))
(define-transform sys.int::binary-< ((lhs single-float) (rhs single-float))
((:optimize (= safety 0) (= speed 3)))
`(call sys.int::%%single-float-< ,lhs ,rhs))
(define-transform sys.int::binary->= ((lhs single-float) (rhs single-float))
((:optimize (= safety 0) (= speed 3)))
`(call not (call sys.int::%%single-float-< ,lhs ,rhs)))
(define-transform sys.int::binary-> ((lhs single-float) (rhs single-float))
((:optimize (= safety 0) (= speed 3)))
`(call sys.int::%%single-float-< ,rhs ,lhs))
(define-transform sys.int::binary-<= ((lhs single-float) (rhs single-float))
((:optimize (= safety 0) (= speed 3)))
`(call not (call sys.int::%%single-float-< ,rhs ,lhs)))
;;; Double-Float arithmetic.
(defmacro define-fast-double-float-transform-arith-two-arg (binary-fn fast-fn)
`(define-transform ,binary-fn ((lhs double-float) (rhs double-float))
((:optimize (= safety 0) (= speed 3)))
`(the double-float (call ,',fast-fn ,lhs ,rhs))))
(define-fast-double-float-transform-arith-two-arg sys.int::binary-+ sys.int::%%double-float-+)
(define-fast-double-float-transform-arith-two-arg sys.int::binary-- sys.int::%%double-float--)
(define-fast-double-float-transform-arith-two-arg sys.int::binary-* sys.int::%%double-float-*)
(define-fast-double-float-transform-arith-two-arg sys.int::binary-/ sys.int::%%double-float-/)
(define-transform float ((number fixnum) (prototype double-float))
((:optimize (= safety 0) (= speed 3)))
`(the double-float
(call mezzano.runtime::%%coerce-fixnum-to-double-float ,number)))
(define-transform sys.int::binary-= ((lhs double-float) (rhs double-float))
((:optimize (= safety 0) (= speed 3)))
`(call eq ,lhs ,rhs))
(define-transform sys.int::binary-< ((lhs double-float) (rhs double-float))
((:optimize (= safety 0) (= speed 3)))
`(call sys.int::%%double-float-< ,lhs ,rhs))
(define-transform sys.int::binary->= ((lhs double-float) (rhs double-float))
((:optimize (= safety 0) (= speed 3)))
`(call not (call sys.int::%%double-float-< ,lhs ,rhs)))
(define-transform sys.int::binary-> ((lhs double-float) (rhs double-float))
((:optimize (= safety 0) (= speed 3)))
`(call sys.int::%%double-float-< ,rhs ,lhs))
(define-transform sys.int::binary-<= ((lhs double-float) (rhs double-float))
((:optimize (= safety 0) (= speed 3)))
`(call not (call sys.int::%%double-float-< ,rhs ,lhs)))
;;; Fast array accesses. Unbounded and may attack at any time.
;;; Currently only functional on simple 1d arrays.
(defmacro define-fast-array-transform (type accessor)
`(progn
(define-transform sys.int::aref-1 ((array (simple-array ,type (*))) index)
((:optimize (= safety 0) (= speed 3)))
`(the ,',type (call ,',accessor ,array ,index)))
(define-transform (setf sys.int::aref-1) (value (array (simple-array ,type (*))) index)
((:optimize (= safety 0) (= speed 3)))
`(the ,',type (call (setf ,',accessor) ,value ,array ,index)))))
(define-fast-array-transform t sys.int::%object-ref-t)
(define-fast-array-transform fixnum sys.int::%object-ref-t)
(define-fast-array-transform (unsigned-byte 64) sys.int::%object-ref-unsigned-byte-64)
(define-fast-array-transform (unsigned-byte 32) sys.int::%%object-ref-unsigned-byte-32)
(define-fast-array-transform (unsigned-byte 16) sys.int::%%object-ref-unsigned-byte-16)
(define-fast-array-transform (unsigned-byte 8) sys.int::%%object-ref-unsigned-byte-8)
(define-fast-array-transform (signed-byte 64) sys.int::%object-ref-signed-byte-64)
(define-fast-array-transform (signed-byte 32) sys.int::%%object-ref-signed-byte-32)
(define-fast-array-transform (signed-byte 16) sys.int::%%object-ref-signed-byte-16)
(define-fast-array-transform (signed-byte 8) sys.int::%%object-ref-signed-byte-8)
(define-fast-array-transform single-float sys.int::%object-ref-single-float)
(define-fast-array-transform double-float sys.int::%object-ref-double-float)
(define-transform length ((sequence (and (simple-array * (*))
(not (simple-array character (*))))))
((:optimize (= safety 0) (= speed 3)))
`(the (integer 0 ,array-dimension-limit) (call sys.int::%object-header-data ,sequence)))
;;; Misc transforms.
(defmacro define-type-predicate-transform (predicate type)
`(progn
(define-transform ,predicate ((object ,type))
((:optimize (= safety 0) (= speed 3)))
`'t)
(define-transform ,predicate ((object (not ,type)))
((:optimize (= safety 0) (= speed 3)))
`'nil)))
(define-type-predicate-transform consp cons)
(define-type-predicate-transform vectorp vector)
(define-type-predicate-transform sys.int::fixnump fixnum)
(define-transform sys.int::%coerce-to-callable ((object function))
((:optimize (= safety 0) (= speed 3)))
object)
(define-transform sys.int::enable-unsafe-struct-access ()
((:optimize (= safety 0)))
`'t)
(define-transform sys.int::enable-unsafe-struct-access ()
((:optimize (/= safety 0)))
`'nil)