Index: clang/lib/CodeGen/CGDebugInfo.cpp
===================================================================
--- clang/lib/CodeGen/CGDebugInfo.cpp
+++ clang/lib/CodeGen/CGDebugInfo.cpp
@@ -292,13 +292,6 @@
     }
   } else if (const auto *OCD = dyn_cast<ObjCCategoryImplDecl>(DC)) {
     OS << OCD->getClassInterface()->getName() << '(' << OCD->getName() << ')';
-  } else if (isa<ObjCProtocolDecl>(DC)) {
-    // We can extract the type of the class from the self pointer.
-    if (ImplicitParamDecl *SelfDecl = OMD->getSelfDecl()) {
-      QualType ClassTy =
-          cast<ObjCObjectPointerType>(SelfDecl->getType())->getPointeeType();
-      ClassTy.print(OS, PrintingPolicy(LangOptions()));
-    }
   }
   OS << ' ' << OMD->getSelector().getAsString() << ']';
 
Index: clang/lib/CodeGen/CGObjCMac.cpp
===================================================================
--- clang/lib/CodeGen/CGObjCMac.cpp
+++ clang/lib/CodeGen/CGObjCMac.cpp
@@ -4027,7 +4027,7 @@
 llvm::Function *
 CGObjCCommonMac::GenerateDirectMethod(const ObjCMethodDecl *OMD,
                                       const ObjCContainerDecl *CD) {
-  auto I = DirectMethodDefinitions.find(OMD);
+  auto I = DirectMethodDefinitions.find(OMD->getCanonicalDecl());
   if (I != DirectMethodDefinitions.end())
     return I->second;
 
@@ -4040,7 +4040,7 @@
   llvm::Function *Method =
       llvm::Function::Create(MethodTy, llvm::GlobalValue::ExternalLinkage,
                              Name.str(), &CGM.getModule());
-  DirectMethodDefinitions.insert(std::make_pair(OMD, Method));
+  DirectMethodDefinitions.insert(std::make_pair(OMD->getCanonicalDecl(), Method));
 
   return Method;
 }
Index: clang/lib/Sema/SemaDeclObjC.cpp
===================================================================
--- clang/lib/Sema/SemaDeclObjC.cpp
+++ clang/lib/Sema/SemaDeclObjC.cpp
@@ -383,9 +383,6 @@
   // Create Decl objects for each parameter, entrring them in the scope for
   // binding to their use.
 
-  // Insert the invisible arguments, self and _cmd!
-  MDecl->createImplicitParams(Context, MDecl->getClassInterface());
-
   PushOnScopeChains(MDecl->getSelfDecl(), FnBodyScope);
   PushOnScopeChains(MDecl->getCmdDecl(), FnBodyScope);
 
@@ -4869,6 +4866,9 @@
     }
   }
 
+  // Insert the invisible arguments, self and _cmd!
+  ObjCMethod->createImplicitParams(Context, ObjCMethod->getClassInterface());
+
   ActOnDocumentableDecl(ObjCMethod);
 
   return ObjCMethod;
Index: clang/lib/Serialization/ASTWriterDecl.cpp
===================================================================
--- clang/lib/Serialization/ASTWriterDecl.cpp
+++ clang/lib/Serialization/ASTWriterDecl.cpp
@@ -664,8 +664,7 @@
   VisitNamedDecl(D);
   // FIXME: convert to LazyStmtPtr?
   // Unlike C/C++, method bodies will never be in header files.
-  bool HasBodyStuff = D->getBody() != nullptr     ||
-                      D->getSelfDecl() != nullptr || D->getCmdDecl() != nullptr;
+  bool HasBodyStuff = D->getBody() != nullptr;
   Record.push_back(HasBodyStuff);
   if (HasBodyStuff) {
     Record.AddStmt(D->getBody());
Index: clang/lib/StaticAnalyzer/Frontend/AnalysisConsumer.cpp
===================================================================
--- clang/lib/StaticAnalyzer/Frontend/AnalysisConsumer.cpp
+++ clang/lib/StaticAnalyzer/Frontend/AnalysisConsumer.cpp
@@ -722,13 +722,6 @@
     } else if (const auto *OCD = dyn_cast<ObjCCategoryImplDecl>(DC)) {
       OS << OCD->getClassInterface()->getName() << '('
          << OCD->getName() << ')';
-    } else if (isa<ObjCProtocolDecl>(DC)) {
-      // We can extract the type of the class from the self pointer.
-      if (ImplicitParamDecl *SelfDecl = OMD->getSelfDecl()) {
-        QualType ClassTy =
-            cast<ObjCObjectPointerType>(SelfDecl->getType())->getPointeeType();
-        ClassTy.print(OS, PrintingPolicy(LangOptions()));
-      }
     }
     OS << ' ' << OMD->getSelector().getAsString() << ']';
 
Index: clang/test/CodeGenObjC/direct-method.m
===================================================================
--- clang/test/CodeGenObjC/direct-method.m
+++ clang/test/CodeGenObjC/direct-method.m
@@ -11,9 +11,17 @@
 
 __attribute__((objc_root_class))
 @interface Root
+- (int)getInt __attribute__((objc_direct));
+@property(direct, readonly) int intProperty;
+@property(direct, readonly) int intProperty2;
 @end
 
 @implementation Root
+// CHECK-LABEL: define hidden i32 @"\01-[Root intProperty2]"
+- (int)intProperty2 {
+  return 42;
+}
+
 // CHECK-LABEL: define hidden i32 @"\01-[Root getInt]"(
 - (int)getInt __attribute__((objc_direct)) {
   // loading parameters
@@ -152,6 +160,7 @@
 }
 
 @end
+// CHECK-LABEL: define hidden i32 @"\01-[Root intProperty]"
 
 @interface Foo : Root {
   id __strong _cause_cxx_destruct;
@@ -173,3 +182,11 @@
 // CHECK-LABEL: define hidden void @"\01-[Foo setGetDynamic_setDirect:]"(
 // CHECK-LABEL: define internal void @"\01-[Foo .cxx_destruct]"(
 @end
+
+int useRoot(Root *r) {
+  // CHECK-LABEL: define i32 @useRoot
+  // CHECK: %{{[^ ]*}} = call i32 bitcast {{.*}} @"\01-[Root getInt]"
+  // CHECK: %{{[^ ]*}} = call i32 bitcast {{.*}} @"\01-[Root intProperty]"
+  // CHECK: %{{[^ ]*}} = call i32 bitcast {{.*}} @"\01-[Root intProperty2]"
+  return [r getInt] + [r intProperty] + [r intProperty2];
+}