[llvm-dev] Raising the default baseline for a target

[John Paul Adrian Glaubitz via llvm-dev]

Hello!

Thanks for the answer!

On 1/21/22 14:01, Nemanja Ivanovic wrote:
> It would seem that the default in the back end is "v9" for 64-bit and "v8" otherwise
> as per: https://llvm.org/doxygen/SparcSubtarget_8cpp_source.html#l00028 <https://llvm.org/doxygen/SparcSubtarget_8cpp_source.html#l00028>
> 
> In clang, it looks like tools::getCPUName() (https://clang.llvm.org/doxygen/namespaceclang_1_1driver_1_1tools.html#a4aa5f09d301ea25099c8badc35a4e09d <https://clang.llvm.org/doxygen/namespaceclang_1_1driver_1_1tools.html#a4aa5f09d301ea25099c8badc35a4e09d>) returns "v9" for Solaris and an empty string otherwise. Presumably if you set it to what it should be set for, you will get what you want.

Yes, that is what I am planning to do now, although I still need to make changes
to compiler-rt since even with V9, __sync_val_compare_and_swap_8 are not available
with GCC.

I opened a bug report for that matter [1]. I will also check whether I can fix something
on the GCC side.

Adrian

> [1] https://github.com/llvm/llvm-project/issues/53337

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 .''`.  John Paul Adrian Glaubitz
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