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simplify the __init

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admittedly more source code, but half the runtime
mainly just using message (not new)
made possible by call sequence change
This commit is contained in:
Torsten Ruger 2015-11-07 21:58:19 +02:00
parent 2315ad6920
commit f2c7ed827d
1 changed files with 10 additions and 5 deletions
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15
lib/register/builtin/kernel.rb
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@ -15,15 +15,20 @@ module Register
#Set up the Space as self upon init
space = Parfait::Space.object_space
space_reg = Register.tmp_reg(:Space)
space_reg = compiler.use_reg(:Space)
compiler.add_code LoadConstant.new(source, space , space_reg)
message_ind = Register.resolve_index( :space , :first_message )
# Load the message to new message register (r1)
compiler.add_code Register.get_slot( source , space_reg , message_ind , :new_message)
compiler.add_code Register.get_slot( source , space_reg , message_ind , :message)
# And store the space as the new self (so the call can move it back as self)
compiler.add_code Register.set_slot( source, space_reg , :new_message , :receiver)
# now we are set up to issue a call to the main
Register.issue_call( compiler , Register.machine.space.get_main)
compiler.add_code Register.set_slot( source, space_reg , :message , :receiver)
exit_label = Label.new("_exit_label" , "#{compiler.clazz.name}.#{compiler.method.name}" )
ret_tmp = compiler.use_reg(:Label)
compiler.add_code Register::LoadConstant.new(source, exit_label , ret_tmp)
compiler.add_code Register.set_slot(source, ret_tmp , :message , :return_address)
# do the register call
compiler.add_code FunctionCall.new( source , Register.machine.space.get_main )
compiler.add_code exit_label
emit_syscall( compiler , :exit )
return compiler.method
end