By populating the memory cache before loading the module, we can avoid a cycle
where a module is imported that is an overlay, which then triggers
ClangImporter, which then (redundantly) triggers the import of the overlay
module, which would reimport the module again, since it's import is still
underway and it hasn't been entered into the cache yet.
rdar://118846313
to match the one specified in LLVM's Mach-O parser.
Otherwise LLDB could not possibly find it!
This name is used by the swift -modulewrap subcommand, which is currently unused
on Darwin, and primarily intended for use under Linux. However, it may be useful
to better support static archives (.a) files with Swift debug info in the
future. To fully support this, dsymutil and LLDB need to know to look for Swift
AST sections in Mach-O objects other than .dSYM bundled.
Implementation note: It would be nice to get the section name out of libObject,
but with the current architecture this needs a major refactoring that didn't
seem justified, given that there is an end-to-end test to prevent such a mishap
in the future.
<rdar://problem/63991514>
