We need this because that global state includes tables like llvm[.compiler].used
which would otherwise be sorely missed.
This fixes an issue of the clang importer that would cause us to fail whenever
we imported a function (say it is marked as static inline) that performs an
objective-c method call and we optimize the code. The optimizer would not see
the objective-c selector global variable (which is marked private) as being
"used by unkown i.e the objc runtime" and would rightly assume it could
propagate the value of the global variable's initializer value as a constant to
loads of the global variable.
Now we call the ClangCodeGenerators translation unit finalization code which
will emit these tables and other module flags. We need to take care that we
merge those datastrutures with datastructures that we emit from swift's IRGen.
rdar://21115194
Swift SVN r29176
Per the previous commit we are no longer using this. Minor save in
simplicity and maybe a bit of compilation time as well.
In the long run IRGen probably shouldn't be pulling information from the
AST at all; the SILModule should be able to tell it what types it needs
to emit information for. But this is still an improvement for now.
No functionality change (that was the previous commit).
Swift SVN r24840
This handles things like NSSwapHostLongLongToBig and MKMapRectMake that
are static inline functions that themselves call other static inline
functions.
<rdar://problem/17227237>
Swift SVN r21080
