[llvm] [RISCV] Add branch folding before branch relaxation (PR #134760)

[Mikhail R. Gadelha via llvm-commits]

mikhailramalho wrote:

> This looks great! What about the compile-time impact?

Sorry I missed your message. I'll collect the data and post it soon.

https://github.com/llvm/llvm-project/pull/134760