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Add support for unboxed s64 values

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* libguile/frames.c (enum stack_item_representation):
  (scm_to_stack_item_representation):
  (scm_frame_local_ref, scm_frame_local_set_x): Support for S64
  representations.

* libguile/frames.h (union scm_vm_stack_element): Add signed 64-bit
  integer field.

* libguile/vm-engine.c (scm->s64, s64->scm, load-s64): New
  instructions.

* module/language/cps/compile-bytecode.scm (compile-function):
* module/language/cps/cse.scm (compute-equivalent-subexpressions):
* module/language/cps/effects-analysis.scm:
* module/language/cps/slot-allocation.scm (compute-var-representations)
  (compute-needs-slot, allocate-slots):
* module/language/cps/utils.scm (compute-constant-values):
* module/language/cps/specialize-primcalls.scm (specialize-primcalls):
  Add support for new primcalls.

* module/language/cps/types.scm (&s64): New type.
  (&s64-min, &s64-max, &u64-max): New convenience definitions.
  (&range-min, &range-max): Use &s64-min and &u64-max names.
  (scm->s64, load-s64, s64->scm): Add support for new primcalls.

* module/system/vm/assembler.scm (emit-scm->s64, emit-s64->scm)
  (emit-load-s64): New exports.
* module/system/vm/assembler.scm (write-arities): Support for s64
  slots.

* module/system/vm/debug.scm (arity-definitions): Support for s64
  slots.
This commit is contained in:
Andy Wingo 2015-11-21 10:32:33 +01:00
parent f34688ad25
commit 8bf77f7192
12 changed files with 116 additions and 15 deletions
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49
libguile/vm-engine.c
View file

@ -257,6 +257,9 @@
#define SP_REF_U64(i) (sp[i].as_u64)
#define SP_SET_U64(i,o) (sp[i].as_u64 = o)
#define SP_REF_S64(i) (sp[i].as_s64)
#define SP_SET_S64(i,o) (sp[i].as_s64 = o)
#define VARIABLE_REF(v) SCM_VARIABLE_REF (v)
#define VARIABLE_SET(v,o) SCM_VARIABLE_SET (v, o)
#define VARIABLE_BOUNDP(v) (!scm_is_eq (VARIABLE_REF (v), SCM_UNDEFINED))
@ -3530,9 +3533,49 @@ VM_NAME (scm_i_thread *thread, struct scm_vm *vp,
NEXT (3);
}
VM_DEFINE_OP (157, unused_157, NULL, NOP)
VM_DEFINE_OP (158, unused_158, NULL, NOP)
VM_DEFINE_OP (159, unused_159, NULL, NOP)
/* scm->s64 dst:12 src:12
*
* Unpack a signed 64-bit integer from SRC and place it in DST.
*/
VM_DEFINE_OP (157, scm_to_s64, "scm->s64", OP1 (X8_S12_S12) | OP_DST)
{
scm_t_uint16 dst, src;
UNPACK_12_12 (op, dst, src);
SYNC_IP ();
SP_SET_S64 (dst, scm_to_int64 (SP_REF (src)));
NEXT (1);
}
/* s64->scm dst:12 src:12
*
* Pack an signed 64-bit integer into a SCM value.
*/
VM_DEFINE_OP (158, s64_to_scm, "s64->scm", OP1 (X8_S12_S12) | OP_DST)
{
scm_t_uint16 dst, src;
UNPACK_12_12 (op, dst, src);
SYNC_IP ();
SP_SET (dst, scm_from_int64 (SP_REF_S64 (src)));
NEXT (1);
}
/* load-s64 dst:24 high-bits:32 low-bits:32
*
* Make an unsigned 64-bit integer with HIGH-BITS and LOW-BITS.
*/
VM_DEFINE_OP (159, load_s64, "load-s64", OP3 (X8_S24, AS32, BS32) | OP_DST)
{
scm_t_uint32 dst;
scm_t_uint64 val;
UNPACK_24 (op, dst);
val = ip[1];
val <<= 32;
val |= ip[2];
SP_SET_U64 (dst, val);
NEXT (3);
}
VM_DEFINE_OP (160, unused_160, NULL, NOP)
VM_DEFINE_OP (161, unused_161, NULL, NOP)
VM_DEFINE_OP (162, unused_162, NULL, NOP)