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Reflection support for unboxed f64 slots

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* module/system/vm/assembler.scm (emit-definition): Add representation
  field.
  (write-arities): Emit representations into the arities section.

* module/system/vm/debug.scm (arity-definitions): Read representations.

* module/system/vm/frame.scm (<binding>): Add representation field and
  binding-representation getter.
  (available-bindings): Pass representation to make-binding.
  (frame-binding-set!, frame-binding-ref, frame-call-representation):
  Pass representation to frame-local-ref / frame-local-set!.

* test-suite/tests/rtl.test: Update definition instructions.

* module/language/cps/slot-allocation.scm ($allocation): Add
  representations field.
  (lookup-representation): New public function.
  (allocate-slots): Pass representations to make-$allocation.

* module/language/cps/compile-bytecode.scm (compile-function): Adapt to
  emit-definition change.

* libguile/frames.h:
* libguile/frames.c (scm_frame_local_ref, scm_frame_local_set_x): Take
  representation argument.
  (scm_to_stack_item_representation): New internal helper.
This commit is contained in:
Andy Wingo 2015-10-28 17:03:42 +00:00
parent e7660a607c
commit e3cc0eeb3a
9 changed files with 149 additions and 77 deletions
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15
module/system/vm/assembler.scm
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@ -1162,10 +1162,9 @@ returned instead."
(define-macro-assembler (source asm source)
(set-asm-sources! asm (acons (asm-start asm) source (asm-sources asm))))
(define-macro-assembler (definition asm name slot)
(define-macro-assembler (definition asm name slot representation)
(let* ((arity (car (meta-arities (car (asm-meta asm)))))
(def (vector name
slot
(def (vector name slot representation
(* (- (asm-start asm) (arity-low-pc arity)) 4))))
(set-arity-definitions! arity (cons def (arity-definitions arity)))))
@ -1876,7 +1875,7 @@ procedure with label @var{rw-init}. @var{rw-init} may be false. If
(let lp ((definitions (arity-definitions arity)))
(match definitions
(() relocs)
((#(name slot def) . definitions)
((#(name slot representation def) . definitions)
(let ((sym (if (symbol? name)
(string-table-intern! strtab (symbol->string name))
0)))
@ -1886,9 +1885,13 @@ procedure with label @var{rw-init}. @var{rw-init} may be false. If
(let lp ((definitions (arity-definitions arity)))
(match definitions
(() relocs)
((#(name slot def) . definitions)
((#(name slot representation def) . definitions)
(put-uleb128 names-port def)
(put-uleb128 names-port slot)
(let ((tag (case representation
((scm) 0)
((f64) 1)
(else (error "what!" representation)))))
(put-uleb128 names-port (logior (ash slot 2) tag)))
(lp definitions))))))
(let lp ((metas metas) (pos arities-prefix-len) (relocs '()))
(match metas