2 files changed, 20 insertions, 0 deletions
diff --git a/lib/AST/ASTContext.cpp b/lib/AST/ASTContext.cpp
index 6f68c2dc2f..055ed7c08c 100644
--- a/lib/AST/ASTContext.cpp
+++ b/lib/AST/ASTContext.cpp
@@ -6516,3 +6516,14 @@ size_t ASTContext::getSideTableAllocatedMemory() const {
     + llvm::capacity_in_bytes(VariableArrayTypes)
     + llvm::capacity_in_bytes(ClassScopeSpecializationPattern);
 }
+
+void ASTContext::setParameterIndex(const ParmVarDecl *D, unsigned int index) {
+  ParamIndices[D] = index;
+}
+
+unsigned ASTContext::getParameterIndex(const ParmVarDecl *D) const {
+  ParameterIndexTable::const_iterator I = ParamIndices.find(D);
+  assert(I != ParamIndices.end() && 
+         "ParmIndices lacks entry set by ParmVarDecl");
+  return I->second;
+}
diff --git a/lib/AST/Decl.cpp b/lib/AST/Decl.cpp
index a4608eb81c..9870c8ea6b 100644
--- a/lib/AST/Decl.cpp
+++ b/lib/AST/Decl.cpp
@@ -1441,6 +1441,15 @@ bool ParmVarDecl::isParameterPack() const {
   return isa<PackExpansionType>(getType());
 }
 
+void ParmVarDecl::setParameterIndexLarge(unsigned parameterIndex) {
+  getASTContext().setParameterIndex(this, parameterIndex);
+  ParmVarDeclBits.ParameterIndex = ParameterIndexSentinel;
+}
+
+unsigned ParmVarDecl::getParameterIndexLarge() const {
+  return getASTContext().getParameterIndex(this);
+}
+
 //===----------------------------------------------------------------------===//
 // FunctionDecl Implementation
 //===----------------------------------------------------------------------===//