@antidote @maxsnew And a more modern solution: just use de Bruijn indices! https://ieeexplore.ieee.org/document/8574536
Typically, conventional superscalar processors improve this performance by introducing out-of-order (OoO) execution with register renaming. However, it is also known to increase the complexity and affect the power efficiency. This paper realizes a novel computer architecture called "STRAIGHT" to resolve this dilemma. The key feature is a unique instruction format in which the source operand is given based on the distance from the producer instruction. By leveraging this format, register renaming is completely removed from the pipeline.
(Register renaming is α-renaming!)
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