[llvm] [X86] Stop emitting CFI instructions on i386-windows (PR #135648)

[Sergei Barannikov via llvm-commits]

s-barannikov wrote:

It is worth noting that this patch doesn't disable generation of CFI with SJLJ exception handling model in the absence of debug info.
This requires changes to common code that would affect several backends. I'll try to fix this issue separately.


https://github.com/llvm/llvm-project/pull/135648