[compiler-rt] [PGO][compiler-rt] Add a test to ensure include files do not diverge (PR #97775)

[Snehasish Kumar via llvm-commits]

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@@ -0,0 +1,7 @@
+;
+; NOTE: if this test fails, please make sure the relevant copies are identical
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snehasish wrote:

nit: s/relevant copies/files/

https://github.com/llvm/llvm-project/pull/97775