When deserializing a declaration, don't look for redeclarations if its
kind indicates that it can never be redeclared. Good for a 1% speedup,
and redeclaration searching drops off the profile.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@173054 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Serialization/ASTCommon.cpp b/lib/Serialization/ASTCommon.cpp
index df87165..6ac4a26 100644
--- a/lib/Serialization/ASTCommon.cpp
+++ b/lib/Serialization/ASTCommon.cpp
@@ -141,5 +141,68 @@
}
return 0;
+}
+bool serialization::isRedeclarableDeclKind(unsigned Kind) {
+ switch (static_cast<Decl::Kind>(Kind)) {
+ case Decl::TranslationUnit: // Special case of a "merged" declaration.
+ case Decl::Namespace:
+ case Decl::NamespaceAlias: // FIXME: Not yet redeclarable, but will be.
+ case Decl::Typedef:
+ case Decl::TypeAlias:
+ case Decl::Enum:
+ case Decl::Record:
+ case Decl::CXXRecord:
+ case Decl::ClassTemplateSpecialization:
+ case Decl::ClassTemplatePartialSpecialization:
+ case Decl::Function:
+ case Decl::CXXMethod:
+ case Decl::CXXConstructor:
+ case Decl::CXXDestructor:
+ case Decl::CXXConversion:
+ case Decl::Var:
+ case Decl::FunctionTemplate:
+ case Decl::ClassTemplate:
+ case Decl::TypeAliasTemplate:
+ case Decl::ObjCProtocol:
+ case Decl::ObjCInterface:
+ return true;
+
+ // Never redeclarable.
+ case Decl::UsingDirective:
+ case Decl::Label:
+ case Decl::UnresolvedUsingTypename:
+ case Decl::TemplateTypeParm:
+ case Decl::EnumConstant:
+ case Decl::UnresolvedUsingValue:
+ case Decl::IndirectField:
+ case Decl::Field:
+ case Decl::ObjCIvar:
+ case Decl::ObjCAtDefsField:
+ case Decl::ImplicitParam:
+ case Decl::ParmVar:
+ case Decl::NonTypeTemplateParm:
+ case Decl::TemplateTemplateParm:
+ case Decl::Using:
+ case Decl::UsingShadow:
+ case Decl::ObjCMethod:
+ case Decl::ObjCCategory:
+ case Decl::ObjCCategoryImpl:
+ case Decl::ObjCImplementation:
+ case Decl::ObjCProperty:
+ case Decl::ObjCCompatibleAlias:
+ case Decl::LinkageSpec:
+ case Decl::ObjCPropertyImpl:
+ case Decl::FileScopeAsm:
+ case Decl::AccessSpec:
+ case Decl::Friend:
+ case Decl::FriendTemplate:
+ case Decl::StaticAssert:
+ case Decl::Block:
+ case Decl::ClassScopeFunctionSpecialization:
+ case Decl::Import:
+ return false;
+ }
+
+ llvm_unreachable("Unhandled declaration kind");
}