Implement parsing, AST, (de-)serialization, and placeholder global
metadata for linking against the libraries/frameworks for imported
modules.
The module map language is extended with a new "link" directive that
specifies what library or framework to link against when a module is
imported, e.g.,
link "clangAST"
or
link framework "MyFramework"
Importing the corresponding module (or any of its submodules) will
eventually link against the named library/framework.
For now, I've added some placeholder global metadata that encodes the
imported libraries/frameworks, so that we can test that this
information gets through to the IR. The format of the data is still
under discussion.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@172437 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Serialization/ASTWriter.cpp b/lib/Serialization/ASTWriter.cpp
index fe498be..d4b0367 100644
--- a/lib/Serialization/ASTWriter.cpp
+++ b/lib/Serialization/ASTWriter.cpp
@@ -2107,6 +2107,12 @@
Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
unsigned ExcludedHeaderAbbrev = Stream.EmitAbbrev(Abbrev);
+ Abbrev = new BitCodeAbbrev();
+ Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_LINK_LIBRARY));
+ Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsFramework
+ Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
+ unsigned LinkLibraryAbbrev = Stream.EmitAbbrev(Abbrev);
+
// Write the submodule metadata block.
RecordData Record;
Record.push_back(getNumberOfModules(WritingModule));
@@ -2209,7 +2215,16 @@
}
Stream.EmitRecord(SUBMODULE_EXPORTS, Record);
}
-
+
+ // Emit the link libraries.
+ for (unsigned I = 0, N = Mod->LinkLibraries.size(); I != N; ++I) {
+ Record.clear();
+ Record.push_back(SUBMODULE_LINK_LIBRARY);
+ Record.push_back(Mod->LinkLibraries[I].IsFramework);
+ Stream.EmitRecordWithBlob(LinkLibraryAbbrev, Record,
+ Mod->LinkLibraries[I].Library);
+ }
+
// Queue up the submodules of this module.
for (Module::submodule_iterator Sub = Mod->submodule_begin(),
SubEnd = Mod->submodule_end();