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Date:   Tue, 8 Dec 2020 21:55:46 +0100
From:   Rasmus Villemoes <>
To:     Christophe Leroy <>,
        Li Yang <>,
        "David S. Miller" <>,
        Jakub Kicinski <>
Cc:     Vladimir Oltean <>,,,, Zhao Qiang <>
Subject: Re: [PATCH 18/20] ethernet: ucc_geth: add helper to replace repeated
 switch statements

On 08/12/2020 16.21, Christophe Leroy wrote:
> Le 05/12/2020 à 20:17, Rasmus Villemoes a écrit :
>> The translation from the ucc_geth_num_of_threads enum value to the
>> actual count can be written somewhat more compactly with a small
>> lookup table, allowing us to replace the four switch statements.
> I think you would allow GCC to provide a much better optimisation with
> something like:

Your version compiles to 120 bytes of object code, mine around 49
(including the 5 byte lookup table). They're about the same in line count.


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