[OPENMP50]Initial codegen for declare variant implementation vendor.

Initial implementation of global aliases emission for the declare
variant pragma with implementation vendor context selector set.

llvm-svn: 373387

1 files changed, 9 insertions, 0 deletions

diff --git a/clang/lib/CodeGen/CGOpenMPRuntime.h b/clang/lib/CodeGen/CGOpenMPRuntime.h
index afec628feb2..032cb23f206 100644
--- a/clang/lib/CodeGen/CGOpenMPRuntime.h
+++ b/clang/lib/CodeGen/CGOpenMPRuntime.h
@@ -644,6 +644,12 @@ private:
   /// must be emitted.
   llvm::SmallDenseSet<const VarDecl *> DeferredGlobalVariables;
 
+  /// Mapping of the original functions to their variants and original global
+  /// decl.
+  llvm::MapVector<CanonicalDeclPtr<const FunctionDecl>,
+                  std::pair<GlobalDecl, GlobalDecl>>
+      DeferredVariantFunction;
+
   /// Flag for keeping track of weather a requires unified_shared_memory
   /// directive is present.
   bool HasRequiresUnifiedSharedMemory = false;
@@ -1652,6 +1658,9 @@ public:
 
   /// Return whether the unified_shared_memory has been specified.
   bool hasRequiresUnifiedSharedMemory() const;
+
+  /// Emits the definition of the declare variant function.
+  virtual bool emitDeclareVariant(GlobalDecl GD, bool IsForDefinition);
 };
 
 /// Class supports emissionof SIMD-only code.