Class: CastOff::Compiler::SimpleIR::Concatstrings

Inherits:

VMInsnIR

• Object
• IR
• CallIR
• VMInsnIR
• CastOff::Compiler::SimpleIR::Concatstrings

Defined in:

lib/cast_off/compile/ir/call_ir.rb

Constant Summary

Constants included from Instruction

Instruction::BlockSeparator, Instruction::BranchInstruction, Instruction::IgnoreInstruction, Instruction::JumpOrReturnInstruction, Instruction::SupportInstruction, Instruction::TypeInfoUser, Instruction::VM_CALL_ARGS_BLOCKARG_BIT, Instruction::VM_CALL_ARGS_SPLAT_BIT, Instruction::VM_CALL_FCALL_BIT, Instruction::VM_CALL_OPT_SEND_BIT, Instruction::VM_CALL_SUPER_BIT, Instruction::VM_CALL_TAILCALL_BIT, Instruction::VM_CALL_TAILRECURSION_BIT, Instruction::VM_CALL_VCALL_BIT

Instance Attribute Summary

Attributes inherited from VMInsnIR

#argv

Attributes inherited from CallIR

#argc, #result_variable, #return_value, #values, #variables, #variables_without_result

Attributes inherited from IR

#alias, #insn

Instance Method Summary

• #harmless?(recv_p) ⇒ Boolean
• #initialize(param, argc, return_value, insn, cfg) ⇒ Concatstrings constructor

  A new instance of Concatstrings.

• #propergate_exact_class(defs) ⇒ Object
• #propergate_guard_usage ⇒ Object
• #side_effect? ⇒ Boolean
• #to_c(params) ⇒ Object
• #type_propergation(defs) ⇒ Object

Methods inherited from VMInsnIR

#dont_duplicate_if_harmless, #should_be_alive?

Methods inherited from CallIR

#can_not_unbox, #mark, #param_irs, #param_variables, #propergate_boxed_value, #sampling_return_value, #sampling_return_value?, #should_be_alive?, #unboxing_prelude

Methods included from Util

#bug, #dlog, #todo, #vlog

Methods inherited from IR

#add_sampling_variable, #alive, #alive?, #dispatch_method?, #generate_guard, #get_definition, #get_definition_str, #get_usage, #get_variable, #inlining_target?, #propergate_boxed_value, #reset, #sampling_variable, #set_info, #standard_guard_target, #unboxing_prelude, #vanish, #vanish?

Constructor Details

#initialize(param, argc, return_value, insn, cfg) ⇒ Concatstrings

Returns a new instance of Concatstrings.

# File 'lib/cast_off/compile/ir/call_ir.rb', line 454

def initialize(param, argc, return_value, insn, cfg)
  super(param, argc, return_value, insn, cfg)
end

Instance Method Details

#harmless?(recv_p) ⇒ Boolean

Returns:

• (Boolean)

# File 'lib/cast_off/compile/ir/call_ir.rb', line 482

def harmless?(recv_p)
  true
end

#propergate_exact_class(defs) ⇒ Object

# File 'lib/cast_off/compile/ir/call_ir.rb', line 463

def propergate_exact_class(defs)
  @return_value.class_exact? ? false : @return_value.is_class_exact()
end

#propergate_guard_usage ⇒ Object

# File 'lib/cast_off/compile/ir/call_ir.rb', line 458

def propergate_guard_usage()
  params = param_irs()
  params.each{|p| p.need_guard(false)}
end

#side_effect? ⇒ Boolean

Returns:

• (Boolean)

# File 'lib/cast_off/compile/ir/call_ir.rb', line 486

def side_effect?
  false
end

#to_c(params) ⇒ Object

# File 'lib/cast_off/compile/ir/call_ir.rb', line 467

def to_c(params)
  ret = []
  ret << super(params)
  param = param_variables()
  ret << "  cast_off_tmp = rb_str_new(0, 0);"
  @argc.times{ret << "  rb_str_append(cast_off_tmp, #{param.shift});"}
  ret << "  #{@return_value} = cast_off_tmp;"
  bug() unless param.empty?
  ret.join("\n")
end

#type_propergation(defs) ⇒ Object

# File 'lib/cast_off/compile/ir/call_ir.rb', line 478

def type_propergation(defs)
  @return_value.is_static([String])
end