[llvm] [SLP][modularisation][NFC] Move compress load/store helpers to SLPMemoryUtils (PR #222038)

[Alexey Bataev via llvm-commits]

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@@ -15,15 +15,21 @@
 #define LLVM_LIB_TRANSFORMS_VECTORIZE_SLPVECTORIZER_SLPMEMORYUTILS_H
 
 #include "llvm/ADT/ArrayRef.h"
+#include "llvm/ADT/STLExtras.h"
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alexey-bataev wrote:

```suggestion
#include "llvm/ADT/STLFunctionalExtras.h"
```

https://github.com/llvm/llvm-project/pull/222038