20 lines
662 B
Ruby
20 lines
662 B
Ruby
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module Virtual
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class SetOptimisation
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def run block
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block.codes.dup.each_with_index do |code , i|
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next unless code.is_a? Virtual::Set
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next_code = block.codes[i+1]
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next unless next_code.is_a? Virtual::Set
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next unless code.to == next_code.from
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# TODO: a correct implementation would have to check that the code.to
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# is not used in further blocks, before being assigned to
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new_code = Virtual::Set.new(code.from , next_code.to )
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block.replace(code , [new_code] )
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block.replace(next_code , [] )
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end
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end
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end
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Virtual.machine.add_pass "Virtual::SetOptimisation"
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end
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