[llvm] change contents of ScalarEvolution from private to protected (PR #83052)

[Nikita Popov via llvm-commits]

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@@ -0,0 +1,70 @@
+
+#include "llvm/Analysis/AliasAnalysis.h"
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nikic wrote:

Drop this file now?

https://github.com/llvm/llvm-project/pull/83052