[llvm] [CodeGen] Inline stack guard check on Windows (PR #136290)

[Omair Javaid via llvm-commits]

omjavaid wrote:

> This all makes sense to me; my only high-level question is if we care about preserving the old codegen at -Oz.

Thanks! .. I think we can skip this behavior in case of Oz, for that I am making a change to skip this optimization in the presence of MinSize enabled.

https://github.com/llvm/llvm-project/pull/136290