[llvm] [profcheck][coro] Adding Branch weights PGO in Coroutines Passes (PR #184466)

[Jin Huang via llvm-commits]

jinhuang1102 wrote:

I implement a new fixing for PGO profile in `CoroSplit.cpp` see https://github.com/llvm/llvm-project/issues/185949#issuecomment-4703198841 for details.

https://github.com/llvm/llvm-project/pull/184466