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

[Steven Wu via Phabricator via cfe-commits]

steven_wu added a comment.

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`.


Repository:
  rG LLVM Github Monorepo

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  https://reviews.llvm.org/D155824/new/

https://reviews.llvm.org/D155824