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Add untag-fixnum instruction

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* libguile/vm-engine.c (untag-fixnum): New instruction.
* module/language/cps/compile-bytecode.scm (compile-function):
* module/system/vm/assembler.scm (untag-fixnum):
* module/language/cps/slot-allocation.scm (compute-var-representations):
* module/language/cps/types.scm (untag-fixnum): Add compiler support for
  untag-fixnum.
This commit is contained in:
Andy Wingo 2017-10-29 19:51:41 +01:00
parent 31e7f44340
commit c9ec866ef9
6 changed files with 22 additions and 7 deletions
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12
libguile/vm-engine.c
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@ -4413,7 +4413,17 @@ VM_NAME (scm_i_thread *thread, struct scm_vm *vp,
NEXT (1);
}
VM_DEFINE_OP (214, unused_214, NULL, NOP)
VM_DEFINE_OP (214, untag_fixnum, "untag-fixnum", OP1 (X8_S12_S12) | OP_DST)
{
scm_t_uint16 dst, src;
UNPACK_12_12 (op, dst, src);
SP_SET_S64 (dst, SCM_I_INUM (SP_REF (src)));
NEXT (1);
}
VM_DEFINE_OP (215, unused_215, NULL, NOP)
VM_DEFINE_OP (216, unused_216, NULL, NOP)
VM_DEFINE_OP (217, unused_217, NULL, NOP)