Relates :
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Relates :
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This is an important step in order to actually improve the spill heuristics ( which is bug https://jbs.oracle.com/bugs/browse/JDK-7022320 ). By cleaning up the existing code we can get a better understanding of what's happening and hopefully find things to improve. Dead code is removed and the main method Split() will instead be a class consisting of many functions in order to improve readability and isolate the code from the rest of the register allocator.
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