[llvm] [X86] Try Folding icmp of v8i32 -> fcmp of v8f32 on AVX (PR #82290)

[Timothy Herchen via llvm-commits]

anematode wrote:

Maybe we're talking about different things then, sorry. I thought this was in relation to when we can or cannot bitcast integers to floats and do comparison as floats. For example, I think the restriction on C in `src_ule_bitcast -> tgt_ule_bitcast` is that it must be between 1 << 23 and the existing bound, not just 0 and the bound.

https://github.com/llvm/llvm-project/pull/82290