Implement CodeGen for C++11 thread_local, following the Itanium ABI specification as discussed on cxx-abi-dev.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@179858 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 11 insertions, 0 deletions

diff --git a/lib/CodeGen/CodeGenModule.h b/lib/CodeGen/CodeGenModule.h
index 1a803f38c0..0f4fe8ae51 100644
--- a/lib/CodeGen/CodeGenModule.h
+++ b/lib/CodeGen/CodeGenModule.h
@@ -317,6 +317,14 @@ class CodeGenModule : public CodeGenTypeCache {
                           llvm::GlobalValue *> StaticExternCMap;
   StaticExternCMap StaticExternCValues;
 
+  /// \brief thread_local variables defined or used in this TU.
+  std::vector<std::pair<const VarDecl *, llvm::GlobalVariable *> >
+    CXXThreadLocals;
+
+  /// \brief thread_local variables with initializers that need to run
+  /// before any thread_local variable in this TU is odr-used.
+  std::vector<llvm::Constant*> CXXThreadLocalInits;
+
   /// CXXGlobalInits - Global variables with initializers that need to run
   /// before main.
   std::vector<llvm::Constant*> CXXGlobalInits;
@@ -1026,6 +1034,9 @@ private:
   /// a C++ destructor Decl.
   void EmitCXXDestructor(const CXXDestructorDecl *D, CXXDtorType Type);
 
+  /// \brief Emit the function that initializes C++ thread_local variables.
+  void EmitCXXThreadLocalInitFunc();
+
   /// EmitCXXGlobalInitFunc - Emit the function that initializes C++ globals.
   void EmitCXXGlobalInitFunc();