[llvm] [RISCV][Zicfilp] Enable Zicfilp CFI compiler behaviors by looking at module flags (PR #152121)

[Ming-Yi Lai via llvm-commits]

mylai-mtk wrote:

@lenary 

> you need to ensure that when LTO merges two modules, that you get the right errors or merge behaviour. ... Please write a test for this ...

Thanks for pointing this out. I had added the LTO tests.

https://github.com/llvm/llvm-project/pull/152121