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Re: [PATCH]: Add new bytecode op `switch' for implementing branch tables

From: Stefan Monnier
Subject: Re: [PATCH]: Add new bytecode op `switch' for implementing branch tables.
Date: Tue, 07 Feb 2017 09:41:22 -0500
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/26.0.50 (gnu/linux)

>> Hmm... so goto-if-nil is never used any more?  Aren't there cases where
>> byte-switch results in slower code than goto-if-nil?
> Once linear search for gethash when the number of keys are small is
> implemented, byte-switch should still be faster, as all byte-goto-if-nil
> and byte-goto-if-nil-else-pop bytecode is "replaced" with native linear
> search code.

Does that mean you answered "yes" to the first question?
I thought goto-if-nil is also used in other circumstances.


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