[PATCH] D68559: [RISCV] Support fast calling convention

[Sam Elliott via Phabricator via llvm-commits]

lenary added a comment.

I was worried about how this would work with varargs, but I see from the IR Reference <https://llvm.org/docs/LangRef.html#callingconv> that fastcc requires both prototypes to match, and disallows varargs.

In the future we should refactor this into a tablegen'd CallingConvention, but that can happen later.


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  https://reviews.llvm.org/D68559/new/

https://reviews.llvm.org/D68559