* Request for update of documentation about `-mtune`
@ 2023-10-27 14:56 LIU Hao
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From: LIU Hao @ 2023-10-27 14:56 UTC (permalink / raw)
To: gcc
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Hello,
Today I have noticed that latest GCC documentation still has
(https://gcc.gnu.org/onlinedocs/gcc/x86-Options.html#index-mtune-17)
> -mtune=cpu-type
> ... ...
>
> ‘intel’
> Produce code optimized for the most current Intel processors, which are Haswell and Silvermont for this version of GCC. ...
Is this choice still the case, or is it just that the documentation hasn't been updated?
Haswell and Silvermont were released about a decade ago and shouldn't be considered 'the most
current Intel processors'. `-march=haswell` actually generates code that runs ~15% slower on my
TigerLake CPU.
--
Best regards,
LIU Hao
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2023-10-27 14:56 Request for update of documentation about `-mtune` LIU Hao
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