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Andreas Fried authoredWhen a Sub node is rematerialized, only its flags will be needed. In this case, the Sub can be replaced by a Cmp and there is no need to have a scratch register to store the Sub's result.
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When a Sub node is rematerialized, only its flags will be needed. In this case, the Sub can be replaced by a Cmp and there is no need to have a scratch register to store the Sub's result.