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Name	Size	Permission
closure-conversion.scm	35.09 KB	-rw-r--r--
compile-bytecode.scm	28.33 KB	-rw-r--r--
constructors.scm	3.71 KB	-rw-r--r--
contification.scm	18.34 KB	-rw-r--r--
cse.scm	17.17 KB	-rw-r--r--
dce.scm	14.91 KB	-rw-r--r--
effects-analysis.scm	22.37 KB	-rw-r--r--
elide-values.scm	3.36 KB	-rw-r--r--
handle-interrupts.scm	2.54 KB	-rw-r--r--
intmap.scm	28.24 KB	-rw-r--r--
intset.scm	29.58 KB	-rw-r--r--
licm.scm	13.95 KB	-rw-r--r--
optimize.scm	4.89 KB	-rw-r--r--
peel-loops.scm	12.08 KB	-rw-r--r--
primitives.scm	4.43 KB	-rw-r--r--
prune-bailouts.scm	3.12 KB	-rw-r--r--
prune-top-level-scopes.scm	2.25 KB	-rw-r--r--
reify-primitives.scm	6.75 KB	-rw-r--r--
renumber.scm	9.39 KB	-rw-r--r--
rotate-loops.scm	10.68 KB	-rw-r--r--
self-references.scm	3.22 KB	-rw-r--r--
simplify.scm	10.88 KB	-rw-r--r--
slot-allocation.scm	41.93 KB	-rw-r--r--
specialize-numbers.scm	29.3 KB	-rw-r--r--
specialize-primcalls.scm	3.97 KB	-rw-r--r--
spec.scm	1.76 KB	-rw-r--r--
split-rec.scm	7.13 KB	-rw-r--r--
type-checks.scm	3.12 KB	-rw-r--r--
type-fold.scm	17.35 KB	-rw-r--r--
types.scm	66.76 KB	-rw-r--r--
utils.scm	20.62 KB	-rw-r--r--
verify.scm	10.52 KB	-rw-r--r--
with-cps.scm	5.72 KB	-rw-r--r--

Code Editor : specialize-primcalls.scm

;;; Continuation-passing style (CPS) intermediate language (IL)

;;;; This library is free software; you can redistribute it and/or
;;;; modify it under the terms of the GNU Lesser General Public
;;;; License as published by the Free Software Foundation; either
;;;; version 3 of the License, or (at your option) any later version.
;;;;
;;;; This library is distributed in the hope that it will be useful,
;;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
;;;; Lesser General Public License for more details.
;;;;
;;;; You should have received a copy of the GNU Lesser General Public
;;;; License along with this library; if not, write to the Free Software
;;;; Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

;;; Commentary:
;;;
;;; Some bytecode operations can encode an immediate as an operand.
;;; This pass tranforms generic primcalls to these specialized
;;; primcalls, if possible.
;;;
;;; Code:

(define-module (language cps specialize-primcalls)
  #:use-module (ice-9 match)
  #:use-module (language cps)
  #:use-module (language cps utils)
  #:use-module (language cps intmap)
  #:export (specialize-primcalls))

(define (specialize-primcalls conts)
  (let ((constants (compute-constant-values conts)))
    (define (u6? var)
      (let ((val (intmap-ref constants var (lambda (_) #f))))
        (and (exact-integer? val) (<= 0 val 63))))
    (define (u8? var)
      (let ((val (intmap-ref constants var (lambda (_) #f))))
        (and (exact-integer? val) (<= 0 val 255))))
    (define (u64? var)
      (let ((val (intmap-ref constants var (lambda (_) #f))))
        (and (exact-integer? val) (<= 0 val #xffffFFFFffffFFFF))))
    (define (s64? var)
      (let ((val (intmap-ref constants var (lambda (_) #f))))
        (and (exact-integer? val)
             (<= (- #x8000000000000000) val #x7fffFFFFffffFFFF))))
    (define (f64? var)
      (let ((val (intmap-ref constants var (lambda (_) #f))))
        (and (number? val) (inexact? val) (real? val))))
    (define (specialize-primcall name args)
      (define (rename name)
        (build-exp ($primcall name args)))
      (match (cons name args)
        (('make-vector (? u8? n) init) (rename 'make-vector/immediate))
        (('vector-ref v (? u8? n)) (rename 'vector-ref/immediate))
        (('vector-set! v (? u8? n) x) (rename 'vector-set!/immediate))
        (('allocate-struct v (? u8? n)) (rename 'allocate-struct/immediate))
        (('struct-ref s (? u8? n)) (rename 'struct-ref/immediate))
        (('struct-set! s (? u8? n) x) (rename 'struct-set!/immediate))
        (('add x (? u8? y)) (build-exp ($primcall 'add/immediate (x y))))
        (('add (? u8? x) y) (build-exp ($primcall 'add/immediate (y x))))
        (('sub x (? u8? y)) (build-exp ($primcall 'sub/immediate (x y))))
        (('uadd x (? u8? y)) (build-exp ($primcall 'uadd/immediate (x y))))
        (('uadd (? u8? x) y) (build-exp ($primcall 'uadd/immediate (y x))))
        (('usub x (? u8? y)) (build-exp ($primcall 'usub/immediate (x y))))
        (('umul x (? u8? y)) (build-exp ($primcall 'umul/immediate (x y))))
        (('umul (? u8? x) y) (build-exp ($primcall 'umul/immediate (y x))))
        (('ursh x (? u6? y)) (build-exp ($primcall 'ursh/immediate (x y))))
        (('ulsh x (? u6? y)) (build-exp ($primcall 'ulsh/immediate (x y))))
        (('scm->f64 (? f64?)) (rename 'load-f64))
        (('scm->u64 (? u64?)) (rename 'load-u64))
        (('scm->u64/truncate (? u64?)) (rename 'load-u64))
        (('scm->s64 (? s64?)) (rename 'load-s64))
        (_ #f)))
    (intmap-map
     (lambda (label cont)
       (match cont
         (($ $kargs names vars ($ $continue k src ($ $primcall name args)))
          (let ((exp* (specialize-primcall name args)))
            (if exp*
                (build-cont
                  ($kargs names vars ($continue k src ,exp*)))
                cont)))
         (_ cont)))
     conts)))

${this.title}

Code Editor : specialize-primcalls.scm