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Late parsed templates (Microsoft specific) can leave unswallowed "macro"-like tokens. They will seriously confuse the Parser when entering the next source file. So lex until we are EOF.
As emitter objects now own their callback objects, DeclCollector has two owners.
Fix that by using an explicit bridge callback for the Preprocessor that it can own.
The resolution now happens during relocation, not just at the call.
A failure thereof causes the transaction to be reverted which makes
bar() undeclared.
On some platforms, global destructors are registered through a call to
__cxa_atexit(dtor, 0/*args*/, __dso_handle). While __cxa_atexit can be resolved
by the regular MemoryManager, __dso_handle (representing the "current shared
library" such that the corresponding atexit function can be called on its
dlclose) can not be resolved by MCJIT. Instead, we provide our own, poining to
the ExecutionEngine, which in turn holds a "current module" that corresponds in
spirit to the shared library handle.
__cxa_atexit, on the other hand, needs to be re-wired: the interpreter needs to
destruct globals upon its destruction, and those globals from a certain module
when that module is unloaded.
Both is done through a custom MemoryManager, significantly reducing the
complexity of the previous ("JIT without MC") implementation.
The custom MemoryManager also forwards in case of a unknown symbols to the LazyFunctionCreators instead of using the generic
ExecutionEngine::InstallLazyFunctionCreator() which has no effect with MCJIT.