[mach-o] Add support for upward linking

To deal with cycles in shared library dependencies, the darwin linker supports
marking specific link dependencies as "upward".  An upward link is when a
lower level library links against a higher level library.

llvm-svn: 219949

1 files changed, 2 insertions, 1 deletions

diff --git a/lld/lib/Driver/DarwinInputGraph.cpp b/lld/lib/Driver/DarwinInputGraph.cpp
index 5a337086420..1ddde24b534 100644
--- a/lld/lib/Driver/DarwinInputGraph.cpp
+++ b/lld/lib/Driver/DarwinInputGraph.cpp
@@ -57,7 +57,8 @@ std::error_code MachOFileNode::parse(const LinkingContext &ctx,
   for (std::unique_ptr<File> &pf : parsedFiles) {
     // If a dylib was parsed, inform LinkingContext about it.
     if (SharedLibraryFile *shl = dyn_cast<SharedLibraryFile>(pf.get())) {
-      _context.registerDylib(reinterpret_cast<mach_o::MachODylibFile*>(shl));
+      _context.registerDylib(reinterpret_cast<mach_o::MachODylibFile*>(shl),
+                             _upwardDylib);
     }
     _files.push_back(std::move(pf));
   }