[llvm] [DA] Ensure nsw flag is checked for StrongSIV addrecs (PR #178047)

[Ryotaro Kasuga via llvm-commits]

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@@ -179,4 +179,4 @@ for.end26.loopexit:                               ; preds = %for.inc24
 
 for.end26:                                        ; preds = %for.end26.loopexit, %entry
   ret void
-}
\ No newline at end of file
+}
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kasuga-fj wrote:

Avoid unrelated change.

https://github.com/llvm/llvm-project/pull/178047