Torsten
0ce14bdfd1
starting to implement register allocation by first creating SA Single Assignment means a register is only every assigned a value once. Hence for any operation involving another register, a new register is created. We do this with a naming scheme for the registers in dot notation (as it would be in c) which means 2 registers with the same name, should have the same contents. This does not apply to temporaries, but that is another day. Starting WIP now, and will create many red commits before merging when green.
46 lines
1.5 KiB
Ruby
46 lines
1.5 KiB
Ruby
require_relative "../helper"
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module Risc
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class TestRegisterValue1 < MiniTest::Test
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def setup
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Parfait.boot!(Parfait.default_test_options)
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@r0 = RegisterValue.new(:message , :Message)
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@r1 = RegisterValue.new(:id_1234 , :Space)
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@compiler = Risc.test_compiler
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end
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def test_resolves_index_ok
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assert_equal 6 , @r0.resolve_index(:caller)
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end
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def test_resolves_index_fail
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assert_raises {@r0.resolve_index(:something)}
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end
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def test_reduce_int
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ins = @r0.reduce_int
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assert_equal SlotToReg , ins.class
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assert_equal Parfait::Integer.integer_index , ins.index
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end
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def test_get_new_left_0
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assert_equal RegisterValue , @r0.get_new_left(:caller , @compiler).class
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end
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def test_get_new_left_no_extra
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assert @r0.get_new_left(:caller , @compiler).extra.empty?
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end
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def test_get_new_left_0_reg
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assert_equal :"message.caller" , @r0.get_new_left(:caller , @compiler).symbol
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end
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def test_get_new_left_1
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assert_equal RegisterValue , @r0.get_new_left(:caller , @compiler).class
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end
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def test_get_new_left_1_reg
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assert_equal :"id_1234.classes" , @r1.get_new_left(:classes , @compiler).symbol
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end
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def test_get_left_uses_extra
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@r1 = RegisterValue.new(:message , :Space , type_arguments: @r0.type)
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# works with nil as compiler, because extra is used
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assert_equal :Message , @r1.get_new_left(:arguments , nil).type.class_name
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end
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end
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end
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