Use export_as for autolinking frameworks

framework module SomeKitCore {
  ...
  export_as SomeKit
}

Given the module above, while generting autolink information during
codegen, clang should to emit '-framework SomeKitCore' only if SomeKit
was not imported in the relevant TU, otherwise it should use '-framework
SomeKit' instead.

rdar://problem/38269782

llvm-svn: 330152

1 files changed, 6 insertions, 0 deletions

diff --git a/clang/lib/Frontend/CompilerInstance.cpp b/clang/lib/Frontend/CompilerInstance.cpp
index b8f55b61427..f57246bec09 100644
--- a/clang/lib/Frontend/CompilerInstance.cpp
+++ b/clang/lib/Frontend/CompilerInstance.cpp
@@ -1979,6 +1979,12 @@ CompilerInstance::loadModule(SourceLocation ImportLoc,
                      Module, ImportLoc);
   }
 
+  // Resolve any remaining module using export_as for this one.
+  getPreprocessor()
+      .getHeaderSearchInfo()
+      .getModuleMap()
+      .resolveLinkAsDependencies(TopModule);
+
   LastModuleImportLoc = ImportLoc;
   LastModuleImportResult = ModuleLoadResult(Module);
   return LastModuleImportResult;