[llvm] [DA] Check if the multiplication overflows in strong SIV test (PR #164704)

[Ehsan Amiri via llvm-commits]

https://github.com/amehsan approved this pull request.

@1997alireza when I checkout your PR locally, in git log I see your email as "a00917109 <alireza.torabian at huawei.com>" and your name in git blame appears as this id as well. Your previous commits are OK though. Please check it.

https://github.com/llvm/llvm-project/pull/164704