[llvm] [llvm][LICM] Add flag to control re-association (PR #149829)

[Theodoros Theodoridis via llvm-commits]

thetheodor wrote:

> Hi @thetheodor, Yep, limiting the multi-use case to FP/vector ops would still work.

Hello, just to clarify, do you mean the following? 
- FP: allow multi-use
- Vector Int: allow multi-use
- Scalar Int: disallow multi-use

https://github.com/llvm/llvm-project/pull/149829