FreddyYe added a comment.
In D135937#3898228 <https://reviews.llvm.org/D135937#3898228>, @FreddyYe wrote:
> For saving capacity of ProcessorSubtypes, gcc decided to not support part of
> compiler features of these two cpus:
>
> __builtin_cpu_is("meteorlake")
> __attribute__((target("arch=raptorlake")))
> ... some others I don't know.
>
> Gcc's related patch:
> raptorlake
> <https://gcc.gnu.org/git/?p=gcc.git;a=commit;h=470a0659b508d684148f362c4dc0eccf5a83a23e>
> and meteorlake
> <https://gcc.gnu.org/git/?p=gcc.git;a=commit;h=fd206f0e95fb6f41b96eaaaab1dc0c30378e5e08>
> Updated to align with gcc first. Welcome opinions and review!
My opinion is to aligin with gcc first: supported basic -march=xxx only for
these two cpus and to support the features mentioned above in the future if
needed. Moreover, these two cpus may have dedicated AdditionalTuning features
in the future, we can also add at that time.
Repository:
rG LLVM Github Monorepo
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D135937/new/
https://reviews.llvm.org/D135937
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