On Fri, Oct 25, 2024 at 10:14:08PM -0700, Rong Xu wrote:
> Enable the machine function split optimization for AutoFDO in Clang.
>
> Machine function split (MFS) is a pass in the Clang compiler that
> splits a function into hot and cold parts. The linker groups all
> cold blocks across functions to
Enable the machine function split optimization for AutoFDO in Clang.
Machine function split (MFS) is a pass in the Clang compiler that
splits a function into hot and cold parts. The linker groups all
cold blocks across functions together. This decreases hot code
fragmentation and improves iCache a
