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remove virtual new_frame instruction

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resolved to one register instruction, not worth the hassle
This commit is contained in:
Torsten Ruger 2015-10-16 17:58:42 +03:00
parent 3b07f625a7
commit 3a622efe9a
5 changed files with 1 additions and 31 deletions
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22
lib/register/passes/frame_implementation.rb
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@ -1,22 +0,0 @@
module Register
# This implements the creation of a new frame object.
# Or to be more precise, it makes the frame available in a register, as the message (any message)
# carries a frame around which is reused.
# Just as a reminder: a message object is used to send and holds return address/message
# and arguments + self
# frames are used by a method and hold local and temporary variables
class FrameImplementation
def run block
block.codes.dup.each do |code|
next unless code.is_a?(Virtual::NewFrame)
# load the frame from message by index, simple get_slot
new_codes = [ Register.get_slot( code, :message , :frame , Register.resolve_to_register(:frame))]
block.replace(code , new_codes )
end
end
end
Virtual.machine.add_pass "Register::FrameImplementation"
end

1
lib/register/register.rb
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@ -1,7 +1,6 @@
require_relative "instruction"
require_relative "register_value"
require_relative "assembler"
require_relative "passes/frame_implementation"
require_relative "passes/return_implementation"
require_relative "passes/call_implementation"

1
lib/virtual/instruction.rb
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@ -17,4 +17,3 @@ require_relative "instructions/halt"
require_relative "instructions/method_call"
require_relative "instructions/method_enter"
require_relative "instructions/method_return"
require_relative "instructions/new_frame"

6
lib/virtual/instructions/new_frame.rb
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@ -1,6 +0,0 @@
module Virtual
class NewFrame < Instruction
end
end

2
lib/virtual/passes/enter_implementation.rb
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@ -9,7 +9,7 @@ module Virtual
new_codes << Register.save_return(code, :message , :return_address)
# and create a new frame if needed
unless code.method.locals.empty?
new_codes << Virtual::NewFrame.new
new_codes << Register.get_slot( code, :message , :frame , Register.resolve_to_register(:frame))
end
block.replace(code , new_codes )
end