The int from enum performance drama

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21

If you really want to know what to avoid, you should look at the assembly, rather than start making up rules for yourself based on incomplete knowledge.

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22

Because these little types allowed it in my program I changed the declaration to u8:

pub const CastleType = enum(u8) {
    short,
    long,

    pub fn u(self: CastleType) u8 {
        return @intFromEnum(self);
    }
}

and performance was for 99-100% again.

5 Likes
23

True. My knowledge is very limited, unfortunately.

24

what a great motivation you have to learn! a project that needs more knowledge!

3 Likes
25

That is true, on the other hand: inspecting asm to check if a compiler did its job is not my favorite hobby.

26

It’s not your favourite hobby yet :3

11 Likes