Class: YTLJit::VM::Node::GlobalVarSpecialRefNode

Inherits:
GlobalVarRefNode show all
Includes:
NodeUtil, TypeListWithoutSignature, SendNodeCodeGen, UnboxedArrayUtil
Defined in:
lib/ytljit/vm.rb

Constant Summary

Constants included from AbsArch

AbsArch::AL, AbsArch::BL, AbsArch::CL, AbsArch::DL, AbsArch::FUNC_ARG, AbsArch::FUNC_ARG_YTL, AbsArch::FUNC_FLOAT_ARG, AbsArch::FUNC_FLOAT_ARG_YTL, AbsArch::INDIRECT_BPR, AbsArch::INDIRECT_RETR, AbsArch::INDIRECT_SPR, AbsArch::INDIRECT_TMPR, AbsArch::INDIRECT_TMPR2, AbsArch::INDIRECT_TMPR3

Constants included from SSE

SSE::XMM0, SSE::XMM1, SSE::XMM2, SSE::XMM3, SSE::XMM4, SSE::XMM5, SSE::XMM6, SSE::XMM7

Constants inherited from BaseNode

BaseNode::ESCAPE_LEVEL

Instance Attribute Summary

Attributes inherited from BaseNode

#code_space, #debug_info, #element_node_list, #id, #is_escape, #parent, #ti_observee, #ti_observer, #type

Instance Method Summary collapse

Methods included from SendNodeCodeGen

#gen_make_argv

Methods included from CommonCodeGen

#dump_context, #gen_alloca, #gen_call, #gen_save_thepr

Methods included from UnboxedArrayUtil

#compile_array_unboxed, #gen_ref_element, #gen_set_element

Methods included from UnboxedObjectUtil

#compile_object_unboxed

Methods included from TypeListWithoutSignature

#add_type, #set_type_list, #type_list, #type_list_initvar

Methods included from NodeUtil

#search_class_top, #search_end, #search_frame_info, #search_top

Methods inherited from GlobalVarRefNode

#collect_info, instance

Methods inherited from BaseNode

#add_element_node, #add_element_node_backward, #add_element_node_backward_aux, #collect_info, #decide_type, #decide_type_core, #decide_type_once, #gen_type_inference_proc, #get_constant_value, #inference_type, #marge_element_node, #marge_type, #same_type, #search_valid_signature, #set_escape_node, #set_escape_node_backward, #ti_add_observer, #ti_changed, #ti_del_link, #ti_reset, #ti_update

Methods included from TypeListWithSignature

#add_type, #set_type_list, #type_list, #type_list_initvar

Methods included from Inspect

#inspect_by_graph

Constructor Details

#initialize(parent, name) ⇒ GlobalVarSpecialRefNode

Returns a new instance of GlobalVarSpecialRefNode.



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# File 'lib/ytljit/vm.rb', line 3899

def initialize(parent, name)
  super(parent)
  @name = name
  @assign_nodes = nil
  @offset = nil
end

Instance Method Details

#collect_candidate_type(context) ⇒ Object 



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# File 'lib/ytljit/vm.rb', line 3906

def collect_candidate_type(context)
  tt = RubyType::BaseType.from_object(eval(@name.to_s))
  sig = context.to_signature
  add_type(sig, tt)
  
  context
end

#compile(context) ⇒ Object 



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# File 'lib/ytljit/vm.rb', line 3914

def compile(context)
  asm = context.assembler
  add = lambda { 
    a = address_of("rb_global_entry")
    $symbol_table[a] = "rb_global_entry"
    a
  }
  gentry = OpVarMemAddress.new(add)

  add = lambda { 
    a = address_of("rb_gvar_get")
    $symbol_table[a] = "rb_gvar_get"
    a
  }
  gget = OpVarMemAddress.new(add)
  wsize = AsmType::MACHINE_WORD.size
  symid = ((@name.__id__ << 1) / (5 * wsize))
  asm.with_retry do
    asm.mov(FUNC_ARG[0], symid)
  end
  context = gen_save_thepr(context)
  context = gen_call(context, gentry, 1)

  asm.with_retry do
    asm.mov(FUNC_ARG[0], RETR)
  end
  context = gen_save_thepr(context)
  context = gen_call(context, gget, 1)

  context.ret_reg = RETR
  context
end