[clang] [llvm] [llvm][clang] Remove `llvm::OwningArrayRef` (PR #169126)

[David Stone via cfe-commits]

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@@ -46,7 +46,7 @@ class BTFParser {
   // A copy of types table from the object file but using native byte
   // order. Should not be too big in practice, e.g. for ~250MiB vmlinux
   // image it is ~4MiB.
-  OwningArrayRef<uint8_t> TypesBuffer;
+  std::vector<uint8_t> TypesBuffer;
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davidstone wrote:

>From the comment, it seems like the expectation is that `TypesBuffer` will typically be much larger than any reasonable small buffer, so my assumption here is that `SmallVector`'s optimization would not help and just be a very minor overhead.

https://github.com/llvm/llvm-project/pull/169126