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avoid 8 words of allocation per lambda, whoooo

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* libguile/objcodes.c (scm_bytecode_to_objcode): Check that the length of
  the vector matches the length embedded in the bytecode.

* libguile/programs.c (scm_program_meta): Call through to
  scm_objcode_meta, instead of looking in the object table. Avoids
  consing up a program+objcode slice for the meta until the meta is
  actually called.

* libguile/vm-i-loader.c (load-program): Step past the metadata too.

* module/language/glil/compile-assembly.scm (make-meta): Just return the
  load-program form, or #f.
  (assoc-ref-or-acons, object-index-and-alist, make-object-table): Don't
  write the meta into the object table.
  (glil->assembly): Instead write the meta into the load-program form.
This commit is contained in:
Andy Wingo 2009-02-01 10:50:45 +01:00
parent 1f1ec13b5c
commit ac47d5f639
4 changed files with 29 additions and 29 deletions
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11
libguile/programs.c
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@ -178,10 +178,15 @@ SCM_DEFINE (scm_program_meta, "program-meta", 1, 0, 0,
"")
#define FUNC_NAME s_scm_program_meta
{
SCM objs;
SCM metaobj;
SCM_VALIDATE_PROGRAM (1, program);
objs = SCM_PROGRAM_OBJTABLE (program);
return scm_is_true (objs) ? scm_c_vector_ref (objs, 1) : SCM_BOOL_F;
metaobj = scm_objcode_meta (SCM_PROGRAM_OBJCODE (program));
if (scm_is_true (metaobj))
return scm_make_program (metaobj, SCM_BOOL_F, SCM_EOL);
else
return SCM_BOOL_F;
}
#undef FUNC_NAME