[llvm] [Analysis] Ensure use of strict fp exceptions in ConstantFolding (PR #136139)

[Antonio Frighetto via llvm-commits]

https://github.com/antoniofrighetto commented:

@pratlucas It seems like there is no equivalent fine-grained option as in Clang, but `-ftrapping-math` should be the one that let GCC assume that FP operations can trap.

https://github.com/llvm/llvm-project/pull/136139