Provide a hook for the benefit of clients using clang IR gen as a subroutine:

emit metadata associating allocas and global values with a Decl*.  This feature
is controlled by an option that (intentionally) cannot be enabled on the command
line.

To use this feature, simply set
  CodeGenOptions.EmitDeclMetadata = true;
and then interpret the completely underspecified metadata. :)



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@107739 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 4 insertions, 0 deletions

diff --git a/include/clang/Frontend/CodeGenOptions.h b/include/clang/Frontend/CodeGenOptions.h
index c25cfb32e6..2918f4e9d3 100644
--- a/include/clang/Frontend/CodeGenOptions.h
+++ b/include/clang/Frontend/CodeGenOptions.h
@@ -67,6 +67,9 @@ public:
   unsigned UnwindTables      : 1; /// Emit unwind tables.
   unsigned VerifyModule      : 1; /// Control whether the module should be run
                                   /// through the LLVM Verifier.
+  unsigned EmitDeclMetadata  : 1; /// Emit special metadata indicating what Decl*
+                                  /// various IR entities came from.  Only useful
+                                  /// when running CodeGen as a subroutine.
 
   /// The code model to use (-mcmodel).
   std::string CodeModel;
@@ -122,6 +125,7 @@ public:
     UnrollLoops = 0;
     UnwindTables = 0;
     VerifyModule = 1;
+    EmitDeclMetadata = 0;
 
     Inlining = NoInlining;
     RelocationModel = "pic";