Add a -gmodules option to the driver and a -dwarf-ext-refs to cc1

to enable the use of external type references in the debug info
(a.k.a. module debugging).

The driver expands -gmodules to "-g -fmodule-format=obj -dwarf-ext-refs"
and passes that to cc1. All this does at the moment is set a flag
codegenopts.

http://reviews.llvm.org/D11958

llvm-svn: 246192

1 files changed, 3 insertions, 3 deletions

diff --git a/clang/lib/Frontend/FrontendAction.cpp b/clang/lib/Frontend/FrontendAction.cpp
index 5b7494da58c..14921229042 100644
--- a/clang/lib/Frontend/FrontendAction.cpp
+++ b/clang/lib/Frontend/FrontendAction.cpp
@@ -190,9 +190,9 @@ bool FrontendAction::BeginSourceFile(CompilerInstance &CI,
 
     IntrusiveRefCntPtr<DiagnosticsEngine> Diags(&CI.getDiagnostics());
 
-    std::unique_ptr<ASTUnit> AST =
-        ASTUnit::LoadFromASTFile(InputFile, CI.getPCHContainerReader(),
-                                 Diags, CI.getFileSystemOpts());
+    std::unique_ptr<ASTUnit> AST = ASTUnit::LoadFromASTFile(
+        InputFile, CI.getPCHContainerReader(), Diags, CI.getFileSystemOpts(),
+        CI.getCodeGenOpts().DebugTypeExtRefs);
 
     if (!AST)
       goto failure;