[PATCH] D155824: [LoongArch] Support -march=native and -mtune=

Mon Jul 31 16:56:17 PDT 2023

steven_wu added a comment.

In D155824#4548921 <https://reviews.llvm.org/D155824#4548921>, @SixWeining wrote:

> In D155824#4548677 <https://reviews.llvm.org/D155824#4548677>, @steven_wu wrote:
>
>> After another look, I will need to request to revert this because this implementation doesn't work with `-fno-integrated-cc1` at all. You can't setCPU/Tune in the driver into a global variable and expect that will work during compilation.
>>
>> You can reproduce with `-fno-integrated-cc1` option or build clang with cmake option `-DCLANG_SPAWN_CC1=On`.
>
> Thanks. I’ll investigate as soon as possible. BTW, did it break any buildbot?

Yes, I only know this bootstrap job (has CMAKE configuration that sets CLANG_SPAWN_CC1). https://green.lab.llvm.org/green/job/clang-stage2-Rthinlto

My local revert is clean and all tests passed. I will just go ahead and revert that.

Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D155824/new/

https://reviews.llvm.org/D155824