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dynamic-wind in terms of wind and unwind; remove <dynwind>, @dynamic-wind

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* doc/ref/compiler.texi: Remove mention of <dynwind>.
* libguile/eval.c (eval): Remove SCM_M_DYNWIND case.
* libguile/expand.c: Remove scm_sym_at_dynamic_wind.
* libguile/memoize.c (do_wind, do_unwind): A couple of hacky subrs.  If
  we see a wind or unwind primcall, we expand to a call of a quoted subr
  value.  It works and removes a kind of memoized value from the
  interpreter.  For the compiler,primcalls to wind and unwind are
  handled specially.
  (MAKMEMO_DYNWIND): Remove.
  (scm_tc16_memoizer): Remove.  Yay!
  (memoize): Remove speculative lookup for toplevels to see if they are
  memoizers: there are no more memoizers.  Memoize calls to the wind and
  unwind primitives.
  (m_dynamic_wind): Remove.
  (unmemoize): Remove dynwind case.
  (scm_init_memoize): Add wind and unwind local definitions.

* module/ice-9/boot-9.scm (dynamic-wind): Reimplement in terms of "wind"
  and "unwind" primitives.  These primitives are not exposed to other
  modules.

* module/ice-9/eval.scm (primitive-eval): Remove dynwind case.
* module/language/scheme/decompile-tree-il.scm (do-decompile):
  (choose-output-names): Remove dynwind cases.

* module/language/tree-il.scm: Remove <dynwind>.  Yaaay!

* module/language/tree-il/analyze.scm (analyze-lexicals): Remove dynwind
  cases.

* module/language/tree-il/compile-glil.scm (*primcall-ops*): Add wind
  and unwind.
  (flatten-lambda-case): Remove dynwind case.  Yay!

* module/language/tree-il/cse.scm (cse):
* module/language/tree-il/debug.scm (verify-tree-il):
* module/language/tree-il/effects.scm (make-effects-analyzer):
* module/language/tree-il/peval.scm (singly-valued-expression?, peval):
  Remove <dywind> cases.  Inline primcalls to dynamic-wind.  Add
  constant folding for thunk?.

* module/language/tree-il/primitives.scm (*interesting-primitive-names*):
  Remove @dynamic-wind, and add procedure? and thunk?.
  (*effect+exception-free-primitives*): Add procedure? and thunk?.
  (*multiply-valued-primitives*): Remove @dynamic-wind.
  Remove @dynamic-wind expander.

* test-suite/tests/peval.test ("partial evaluation"): Update tests for
  dynwind desugaring.
This commit is contained in:
Andy Wingo 2013-06-27 18:49:21 +02:00
parent 0fcc39a0a9
commit bb97e4abd4
17 changed files with 108 additions and 280 deletions
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2
libguile/memoize.h
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@ -49,7 +49,6 @@ SCM_API SCM scm_sym_with_fluids;
SCM_API SCM scm_sym_at;
SCM_API SCM scm_sym_atat;
SCM_API SCM scm_sym_delay;
SCM_API SCM scm_sym_at_dynamic_wind;
SCM_API SCM scm_sym_eval_when;
SCM_API SCM scm_sym_arrow;
SCM_API SCM scm_sym_else;
@ -74,7 +73,6 @@ enum
SCM_M_LET,
SCM_M_QUOTE,
SCM_M_DEFINE,
SCM_M_DYNWIND,
SCM_M_WITH_FLUIDS,
SCM_M_APPLY,
SCM_M_CONT,