Include st_dev to make the result of getUniqueID actually unique.

This will let us use getUniqueID instead of st_dev directly on clang.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@187378 91177308-0d34-0410-b5e6-96231b3b80d8
Delete documentation for deleted options.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@187380 91177308-0d34-0410-b5e6-96231b3b80d8
Make file_status::getUniqueID const.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@187383 91177308-0d34-0410-b5e6-96231b3b80d8
Elaborate a bit on the type unit and ODR conditional code.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@187385 91177308-0d34-0410-b5e6-96231b3b80d8
Clarify comments for types contained in anonymous namespaces and
odr hashes.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@187391 91177308-0d34-0410-b5e6-96231b3b80d8
Make sure we don't emit an ODR hash for types with no name and make
sure the comments for each testcase are a bit easier to distinguish.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@187392 91177308-0d34-0410-b5e6-96231b3b80d8
Fix a truly egregious thinko in anonymous namespace check,
update testcase to make sure we generate debug info for walrus
by adding a non-trivial constructor and verify that we don't
emit an ODR signature for the type.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@187393 91177308-0d34-0410-b5e6-96231b3b80d8