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Add bind-optionals instruction

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* doc/ref/vm.texi (Function Prologue Instructions): Document new
  instruction.
* libguile/jit.c (compile_bind_optionals): New compiler.
* libguile/vm-engine.c (VM_NAME): New interpreter.
* module/system/vm/assembler.scm (opt-prelude): Emit bind-optionals as
  appropriate.
* module/system/vm/disassembler.scm (define-stack-effect-parser)
  (code-annotation): Handle bind-optionals.
This commit is contained in:
Andy Wingo 2019-06-06 16:20:20 +02:00
parent 12d6e43176
commit 9fd978ed7e
5 changed files with 73 additions and 9 deletions
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13
module/system/vm/assembler.scm
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@ -1,6 +1,6 @@
;;; Guile bytecode assembler
;;; Copyright (C) 2001, 2009, 2010, 2012, 2013, 2014, 2015, 2017, 2018 Free Software Foundation, Inc.
;;; Copyright (C) 2001, 2009-2019 Free Software Foundation, Inc.
;;;
;;; This library is free software; you can redistribute it and/or
;;; modify it under the terms of the GNU Lesser General Public
@ -246,7 +246,6 @@
emit-assert-nargs-ee
emit-assert-nargs-ge
emit-assert-nargs-le
emit-alloc-frame
emit-reset-frame
emit-assert-nargs-ee/locals
emit-bind-kwargs
@ -1478,6 +1477,8 @@ returned instead."
(emit-assert-nargs-ge asm nreq))
(cond
(rest?
(unless (zero? nopt)
(emit-bind-optionals asm (+ nreq nopt)))
(emit-bind-rest asm (+ nreq nopt)))
(alternate
(emit-arguments<=? asm (+ nreq nopt))
@ -1485,9 +1486,13 @@ returned instead."
;; whereas for <, NONE usually indicates greater-than-or-equal,
;; hence the name jge. Perhaps we just need to rename jge to
;; br-if-none.
(emit-jge asm alternate))
(emit-jge asm alternate)
(unless (zero? nopt)
(emit-bind-optionals asm (+ nreq nopt))))
(else
(emit-assert-nargs-le asm (+ nreq nopt))))
(emit-assert-nargs-le asm (+ nreq nopt))
(unless (zero? nopt)
(emit-bind-optionals asm (+ nreq nopt)))))
(emit-alloc-frame asm nlocals))
(define-macro-assembler (kw-prelude asm nreq nopt rest? kw-indices