Changes

ContentCache: Simplify by always owning the MemoryBuffer

This changes `ContentCache::Buffer` to use
`std::unique_ptr<MemoryBuffer>` instead of the `PointerIntPair`. It
drops the (mostly unused) `DoNotFree` bit, instead creating a (new)
non-owning `MemoryBuffer` instance when passed a `MemoryBufferRef`.

Differential Revision: https://reviews.llvm.org/D67030

[flang] Fix call to CHECK() on erroneous subroutine declaration

When processing declarations in resolve-names.cpp, we were returning a
symbol that had SubprogramName details to PushSubprogramScope(), which
expects a symbol with Subprogram details.

I adjusted the code and added a test.

Differential Revision: https://reviews.llvm.org/D89829

[lldb] Don't strip LLDB.framework on install

The framework build will run dsymutil after LLDB.framework is installed.

SourceManager: Simplify early returns in ContentCache::getBufferOrNone, NFC

As suggested in the review for https://reviews.llvm.org/D89430, simplify
the logic for marking the buffer as invalid in the early return paths.

Differential Revision: https://reviews.llvm.org/D89722

[llvm] Fix ODRViolations for VersionTuple YAML specializations NFC

It appears for Swift there was confusing errors when trying to parse APINotes, when libAPINotes and libInterfaceStub are linked, they both export symbol
`__ZN4llvm4yaml7yamlizeINS_12VersionTupleEEENSt3__19enable_ifIXsr16has_ScalarTraitsIT_EE5valueEvE4typeERNS0_2IOERS5_bRNS0_12EmptyContextE`, and discovered
same symbol defined within llvm-ifs.

This consolidates the boilerplate into YAMLTraits and defers the specific validation in reading the whole input.
fixes: rdar://problem/70450563

Reviewed By: phosek, dblaikie

Differential Revision: https://reviews.llvm.org/D89764

[test] Fix -fbasic-block-sections= test on Windows after D89500

This is a test commit

Revert "This is a test commit"

This reverts commit cbe0ee1a94d11bd32019920c8f55ebd58054542a.

[Polly] Delete unused lambda capture after 7175cffb2133048018df74c1b49d1d4962ea18f2