[compiler-rt] [profile] Implement a non-mmap path when reading profile files from a non-local filesystem (PR #131177)

[Wael Yehia via llvm-commits]

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@@ -31,6 +31,25 @@ int lprofUnlockFileHandle(FILE *F);
  * lock for exclusive access. The caller will block
  * if the lock is already held by another process. */
 FILE *lprofOpenFileEx(const char *Filename);
+
+enum MemoryStatus {
+  MM_INVALID = 0x1, // Addr is not a valid address
+  MM_MMAP = 0x2,    // Addr was mmap'ed
+  MM_MALLOC = 0x4   // Addr was malloc'ed
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w2yehia wrote:

MM is for ManagedMemory, but yea MS_ makes more sense. Changed.
I made them bit flags in case in the future there'll be a need for it. 
Since this field is not being serialized to disk, we can use natural ordering for now and change it later if needed. 

https://github.com/llvm/llvm-project/pull/131177