Move the functionality of ASTContext::getCanonicalDecl(), into a virtual method Decl::getCanonicalDecl().

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@76273 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 14 insertions, 0 deletions

diff --git a/lib/AST/DeclTemplate.cpp b/lib/AST/DeclTemplate.cpp
index f1bd1b67d2..e096e41aed 100644
--- a/lib/AST/DeclTemplate.cpp
+++ b/lib/AST/DeclTemplate.cpp
@@ -98,6 +98,13 @@ void FunctionTemplateDecl::Destroy(ASTContext &C) {
   Decl::Destroy(C);
 }
 
+FunctionTemplateDecl *FunctionTemplateDecl::getCanonicalDecl() {
+  FunctionTemplateDecl *FunTmpl = this;
+  while (FunTmpl->getPreviousDeclaration())
+    FunTmpl = FunTmpl->getPreviousDeclaration();
+  return FunTmpl;
+}
+
 FunctionTemplateDecl::Common *FunctionTemplateDecl::getCommonPtr() {
   // Find the first declaration of this function template.
   FunctionTemplateDecl *First = this;
@@ -115,6 +122,13 @@ FunctionTemplateDecl::Common *FunctionTemplateDecl::getCommonPtr() {
 // ClassTemplateDecl Implementation
 //===----------------------------------------------------------------------===//
 
+ClassTemplateDecl *ClassTemplateDecl::getCanonicalDecl() {
+  ClassTemplateDecl *Template = this;
+  while (Template->getPreviousDeclaration())
+    Template = Template->getPreviousDeclaration();
+  return Template;
+}
+
 ClassTemplateDecl *ClassTemplateDecl::Create(ASTContext &C,
                                              DeclContext *DC,
                                              SourceLocation L,