[llvm] [nfc][InstrProfTest]Add a test fixture to parameterize the read-write test of value profiles (PR #73038)

[Mingming Liu via llvm-commits]

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@@ -6,6 +6,7 @@
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+#include "llvm/ADT/bit.h"
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minglotus-6 wrote:

yes. removed it.

I tried to use a struct to represent test values rather than using `std::tuple` in the middle, and the header is needed in the middle (if I have need `llvm::endianness`). A struct is a little bit more expressive but chose to use `std::tuple` in order to use `testing::Combine` and `testing::Values` to generate test parameters.

https://github.com/llvm/llvm-project/pull/73038