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Add low-level support for unboxed 64-bit unsigned ints

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* libguile/frames.c (enum stack_item_representation)
* libguile/frames.c (scm_to_stack_item_representation):
  (scm_frame_local_ref, scm_frame_local_set_x): Support 'u64 slots.
* libguile/frames.h (union scm_vm_stack_element): Add as_u64 member.

* libguile/vm-engine.c (SP_REF_U64, SP_SET_U64): New helpers.
  (scm->u64, u64->scm): New instructions.

* module/language/cps/cse.scm (compute-equivalent-subexpressions):
  Scalar replacement for u64->scm and scm->u64.

* module/language/cps/effects-analysis.scm (scm->u64, u64->scm): Add
  cases.

* module/language/cps/slot-allocation.scm (compute-var-representations):
  (allocate-slots): Represent the result of scm->u64 as a "u64" slot.

* module/language/cps/types.scm (&u64): New type.
  (scm->u64, u64->scm): Add support for these ops.

* module/system/vm/assembler.scm (write-arities):
* module/system/vm/debug.scm (arity-definitions): Support u64
  representations.
This commit is contained in:
Andy Wingo 2015-11-12 21:44:24 +01:00
parent 58153e3a08
commit dfbe869e24
9 changed files with 73 additions and 10 deletions
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1
module/system/vm/assembler.scm
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@ -1895,6 +1895,7 @@ procedure with label @var{rw-init}. @var{rw-init} may be false. If
(let ((tag (case representation
((scm) 0)
((f64) 1)
((u64) 2)
(else (error "what!" representation)))))
(put-uleb128 names-port (logior (ash slot 2) tag)))
(lp definitions))))))