diff --git a/clang/lib/AST/DeclPrinter.cpp b/clang/lib/AST/DeclPrinter.cpp
@@ -21,6 +21,7 @@
 #include "clang/AST/ExprCXX.h"
 #include "clang/AST/PrettyPrinter.h"
 #include "clang/Basic/Module.h"
+#include "clang/Basic/SourceManager.h"
 #include "llvm/Support/raw_ostream.h"
 using namespace clang;
 
@@ -49,18 +50,6 @@ namespace {
 
     void PrintObjCTypeParams(ObjCTypeParamList *Params);
 
-    enum class AttrPrintLoc {
-      None = 0,
-      Left = 1,
-      Right = 2,
-      Any = Left | Right,
-
-      LLVM_MARK_AS_BITMASK_ENUM(/*DefaultValue=*/Any)
-    };
-
-    void prettyPrintAttributes(Decl *D, raw_ostream &out,
-                               AttrPrintLoc loc = AttrPrintLoc::Any);
-
   public:
     DeclPrinter(raw_ostream &Out, const PrintingPolicy &Policy,
                 const ASTContext &Context, unsigned Indentation = 0,
@@ -129,11 +118,10 @@ namespace {
                                 const TemplateParameterList *Params);
     void printTemplateArguments(llvm::ArrayRef<TemplateArgumentLoc> Args,
                                 const TemplateParameterList *Params);
-
-    inline void prettyPrintAttributes(Decl *D) {
-      prettyPrintAttributes(D, Out);
-    }
-
+    enum class AttrPosAsWritten { Default = 0, Left, Right };
+    void
+    prettyPrintAttributes(const Decl *D,
+                          AttrPosAsWritten Pos = AttrPosAsWritten::Default);
     void prettyPrintPragmas(Decl *D);
     void printDeclType(QualType T, StringRef DeclName, bool Pack = false);
   };
@@ -250,87 +238,48 @@ raw_ostream& DeclPrinter::Indent(unsigned Indentation) {
   return Out;
 }
 
-// For CLANG_ATTR_LIST_CanPrintOnLeft macro.
-#include "clang/Basic/AttrLeftSideCanPrintList.inc"
+static DeclPrinter::AttrPosAsWritten getPosAsWritten(const Attr *A,
+                                                     const Decl *D) {
+  SourceLocation ALoc = A->getLoc();
+  SourceLocation DLoc = D->getLocation();
+  const ASTContext &C = D->getASTContext();
+  if (ALoc.isInvalid() || DLoc.isInvalid())
+    return DeclPrinter::AttrPosAsWritten::Left;
 
-// For CLANG_ATTR_LIST_PrintOnLeft macro.
-#include "clang/Basic/AttrLeftSideMustPrintList.inc"
+  if (C.getSourceManager().isBeforeInTranslationUnit(ALoc, DLoc))
+    return DeclPrinter::AttrPosAsWritten::Left;
 
-static bool canPrintOnLeftSide(attr::Kind kind) {
-#ifdef CLANG_ATTR_LIST_CanPrintOnLeft
-  switch (kind) {
-  CLANG_ATTR_LIST_CanPrintOnLeft
-    return true;
-  default:
-    return false;
-  }
-#else
-  return false;
-#endif
-}
-
-static bool canPrintOnLeftSide(const Attr *A) {
-  if (A->isStandardAttributeSyntax())
-    return false;
-
-  return canPrintOnLeftSide(A->getKind());
+  return DeclPrinter::AttrPosAsWritten::Right;
 }
 
-static bool mustPrintOnLeftSide(attr::Kind kind) {
-#ifdef CLANG_ATTR_LIST_PrintOnLeft
-  switch (kind) {
-  CLANG_ATTR_LIST_PrintOnLeft
-    return true;
-  default:
-    return false;
-  }
-#else
-  return false;
-#endif
-}
-
-static bool mustPrintOnLeftSide(const Attr *A) {
-  if (A->isDeclspecAttribute())
-    return true;
-
-  return mustPrintOnLeftSide(A->getKind());
-}
-
-void DeclPrinter::prettyPrintAttributes(Decl *D, llvm::raw_ostream &Out,
-                                        AttrPrintLoc Loc) {
+void DeclPrinter::prettyPrintAttributes(const Decl *D,
+                                        AttrPosAsWritten Pos /*=Default*/) {
   if (Policy.PolishForDeclaration)
     return;
 
   if (D->hasAttrs()) {
-    AttrVec &Attrs = D->getAttrs();
+    const AttrVec &Attrs = D->getAttrs();
     for (auto *A : Attrs) {
       if (A->isInherited() || A->isImplicit())
         continue;
-
-      AttrPrintLoc AttrLoc = AttrPrintLoc::Right;
-      if (mustPrintOnLeftSide(A)) {
-        // If we must always print on left side (e.g. declspec), then mark as
-        // so.
-        AttrLoc = AttrPrintLoc::Left;
-      } else if (canPrintOnLeftSide(A)) {
-        // For functions with body defined we print the attributes on the left
-        // side so that GCC accept our dumps as well.
-        if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(D);
-            FD && FD->isThisDeclarationADefinition())
-          // In case Decl is a function with a body, then attrs should be print
-          // on the left side.
-          AttrLoc = AttrPrintLoc::Left;
-
-          // In case it is a variable declaration with a ctor, then allow
-          // printing on the left side for readbility.
-        else if (const VarDecl *VD = dyn_cast<VarDecl>(D);
-                   VD && VD->getInit() &&
-                   VD->getInitStyle() == VarDecl::CallInit)
-          AttrLoc = AttrPrintLoc::Left;
+      switch (A->getKind()) {
+#define ATTR(X)
+#define PRAGMA_SPELLING_ATTR(X) case attr::X:
+#include "clang/Basic/AttrList.inc"
+        break;
+      default:
+        AttrPosAsWritten APos = getPosAsWritten(A, D);
+        assert(APos != AttrPosAsWritten::Default &&
+               "Default not a valid for an attribute location");
+        if (Pos == AttrPosAsWritten::Default || Pos == APos) {
+          if (Pos != AttrPosAsWritten::Left)
+            Out << ' ';
+          A->printPretty(Out, Policy);
+          if (Pos == AttrPosAsWritten::Left)
+            Out << ' ';
+        }
+        break;
       }
-      // Only print the side matches the user requested.
-      if ((Loc & AttrLoc) != AttrPrintLoc::None)
-        A->printPretty(Out, Policy);
     }
   }
 }
@@ -691,8 +640,10 @@ static void MaybePrintTagKeywordIfSupressingScopes(PrintingPolicy &Policy,
 
 void DeclPrinter::VisitFunctionDecl(FunctionDecl *D) {
   if (!D->getDescribedFunctionTemplate() &&
-      !D->isFunctionTemplateSpecialization())
+      !D->isFunctionTemplateSpecialization()) {
     prettyPrintPragmas(D);
+    prettyPrintAttributes(D, AttrPosAsWritten::Left);
+  }
 
   if (D->isFunctionTemplateSpecialization())
     Out << "template<> ";
@@ -702,22 +653,6 @@ void DeclPrinter::VisitFunctionDecl(FunctionDecl *D) {
       printTemplateParameters(D->getTemplateParameterList(I));
   }
 
-  std::string LeftsideAttrs;
-  llvm::raw_string_ostream LSAS(LeftsideAttrs);
-
-  prettyPrintAttributes(D, LSAS, AttrPrintLoc::Left);
-
-  // prettyPrintAttributes print a space on left side of the attribute.
-  if (LeftsideAttrs[0] == ' ') {
-    // Skip the space prettyPrintAttributes generated.
-    LeftsideAttrs.erase(0, LeftsideAttrs.find_first_not_of(' '));
-
-    // Add a single space between the attribute and the Decl name.
-    LSAS << ' ';
-  }
-
-  Out << LeftsideAttrs;
-
   CXXConstructorDecl *CDecl = dyn_cast<CXXConstructorDecl>(D);
   CXXConversionDecl *ConversionDecl = dyn_cast<CXXConversionDecl>(D);
   CXXDeductionGuideDecl *GuideDecl = dyn_cast<CXXDeductionGuideDecl>(D);
@@ -883,7 +818,7 @@ void DeclPrinter::VisitFunctionDecl(FunctionDecl *D) {
     Ty.print(Out, Policy, Proto);
   }
 
-  prettyPrintAttributes(D, Out, AttrPrintLoc::Right);
+  prettyPrintAttributes(D, AttrPosAsWritten::Right);
 
   if (D->isPureVirtual())
     Out << " = 0";
@@ -976,27 +911,12 @@ void DeclPrinter::VisitLabelDecl(LabelDecl *D) {
 void DeclPrinter::VisitVarDecl(VarDecl *D) {
   prettyPrintPragmas(D);
 
+  prettyPrintAttributes(D, AttrPosAsWritten::Left);
+
   if (const auto *Param = dyn_cast<ParmVarDecl>(D);
       Param && Param->isExplicitObjectParameter())
     Out << "this ";
 
-  std::string LeftSide;
-  llvm::raw_string_ostream LeftSideStream(LeftSide);
-
-  // Print attributes that should be placed on the left, such as __declspec.
-  prettyPrintAttributes(D, LeftSideStream, AttrPrintLoc::Left);
-
-  // prettyPrintAttributes print a space on left side of the attribute.
-  if (LeftSide[0] == ' ') {
-    // Skip the space prettyPrintAttributes generated.
-    LeftSide.erase(0, LeftSide.find_first_not_of(' '));
-
-    // Add a single space between the attribute and the Decl name.
-    LeftSideStream << ' ';
-  }
-
-  Out << LeftSide;
-
   QualType T = D->getTypeSourceInfo()
     ? D->getTypeSourceInfo()->getType()
     : D->getASTContext().getUnqualifiedObjCPointerType(D->getType());
@@ -1029,21 +949,16 @@ void DeclPrinter::VisitVarDecl(VarDecl *D) {
     }
   }
 
-  StringRef Name;
-
-  Name = (isa<ParmVarDecl>(D) && Policy.CleanUglifiedParameters &&
-          D->getIdentifier())
-             ? D->getIdentifier()->deuglifiedName()
-             : D->getName();
-
   if (!Policy.SuppressTagKeyword && Policy.SuppressScope &&
       !Policy.SuppressUnwrittenScope)
     MaybePrintTagKeywordIfSupressingScopes(Policy, T, Out);
-  printDeclType(T, Name);
 
-  // Print the attributes that should be placed right before the end of the
-  // decl.
-  prettyPrintAttributes(D, Out, AttrPrintLoc::Right);
+  printDeclType(T, (isa<ParmVarDecl>(D) && Policy.CleanUglifiedParameters &&
+                    D->getIdentifier())
+                       ? D->getIdentifier()->deuglifiedName()
+                       : D->getName());
+
+  prettyPrintAttributes(D, AttrPosAsWritten::Right);
 
   Expr *Init = D->getInit();
   if (!Policy.SuppressInitializers && Init) {

diff --git a/clang/lib/AST/Interp/ByteCodeExprGen.cpp b/clang/lib/AST/Interp/ByteCodeExprGen.cpp
@@ -1084,6 +1084,9 @@ static CharUnits AlignOfType(QualType T, const ASTContext &ASTCtx,
   if (const auto *Ref = T->getAs<ReferenceType>())
     T = Ref->getPointeeType();
 
+  if (T.getQualifiers().hasUnaligned())
+    return CharUnits::One();
+
   // __alignof is defined to return the preferred alignment.
   // Before 8, clang returned the preferred alignment for alignof and
   // _Alignof as well.

diff --git a/clang/lib/AST/Interp/Disasm.cpp b/clang/lib/AST/Interp/Disasm.cpp
@@ -233,3 +233,34 @@ LLVM_DUMP_METHOD void InterpFrame::dump(llvm::raw_ostream &OS,
     F = F->Caller;
   }
 }
+
+LLVM_DUMP_METHOD void Record::dump(llvm::raw_ostream &OS, unsigned Indentation,
+                                   unsigned Offset) const {
+  unsigned Indent = Indentation * 2;
+  OS.indent(Indent);
+  {
+    ColorScope SC(OS, true, {llvm::raw_ostream::BLUE, true});
+    OS << getName() << "\n";
+  }
+
+  unsigned I = 0;
+  for (const Record::Base &B : bases()) {
+    OS.indent(Indent) << "- Base " << I << ". Offset " << (Offset + B.Offset)
+                      << "\n";
+    B.R->dump(OS, Indentation + 1, Offset + B.Offset);
+    ++I;
+  }
+
+  // FIXME: Virtual bases.
+
+  I = 0;
+  for (const Record::Field &F : fields()) {
+    OS.indent(Indent) << "- Field " << I << ": ";
+    {
+      ColorScope SC(OS, true, {llvm::raw_ostream::BRIGHT_RED, true});
+      OS << F.Decl->getName();
+    }
+    OS << ". Offset " << (Offset + F.Offset) << "\n";
+    ++I;
+  }
+}
diff --git a/clang/lib/AST/Interp/Interp.h b/clang/lib/AST/Interp/Interp.h
@@ -801,6 +801,18 @@ inline bool CmpHelperEQ<Pointer>(InterpState &S, CodePtr OpPC, CompareFn Fn) {
     return true;
   }
 
+  for (const auto &P : {LHS, RHS}) {
+    if (P.isZero())
+      continue;
+    if (const ValueDecl *VD = P.getDeclDesc()->asValueDecl();
+        VD && VD->isWeak()) {
+      const SourceInfo &Loc = S.Current->getSource(OpPC);
+      S.FFDiag(Loc, diag::note_constexpr_pointer_weak_comparison)
+          << P.toDiagnosticString(S.getCtx());
+      return false;
+    }
+  }
+
   if (!Pointer::hasSameBase(LHS, RHS)) {
     S.Stk.push<BoolT>(BoolT::from(Fn(ComparisonCategoryResult::Unordered)));
     return true;
@@ -1333,6 +1345,11 @@ inline bool FinishInit(InterpState &S, CodePtr OpPC) {
   return true;
 }
 
+inline bool Dump(InterpState &S, CodePtr OpPC) {
+  S.Stk.dump();
+  return true;
+}
+
 inline bool VirtBaseHelper(InterpState &S, CodePtr OpPC, const RecordDecl *Decl,
                            const Pointer &Ptr) {
   Pointer Base = Ptr;
@@ -1841,6 +1858,15 @@ inline bool This(InterpState &S, CodePtr OpPC) {
   if (!CheckThis(S, OpPC, This))
     return false;
 
+  // Ensure the This pointer has been cast to the correct base.
+  if (!This.isDummy()) {
+    assert(isa<CXXMethodDecl>(S.Current->getFunction()->getDecl()));
+    assert(This.getRecord());
+    assert(
+        This.getRecord()->getDecl() ==
+        cast<CXXMethodDecl>(S.Current->getFunction()->getDecl())->getParent());
+  }
+
   S.Stk.push<Pointer>(This);
   return true;
 }

diff --git a/clang/lib/AST/Interp/Opcodes.td b/clang/lib/AST/Interp/Opcodes.td
@@ -723,3 +723,8 @@ def CheckNonNullArg : Opcode {
 }
 
 def Memcpy : Opcode;
+
+//===----------------------------------------------------------------------===//
+// Debugging.
+//===----------------------------------------------------------------------===//
+def Dump : Opcode;
diff --git a/clang/lib/AST/Interp/Pointer.cpp b/clang/lib/AST/Interp/Pointer.cpp
@@ -177,6 +177,10 @@ void Pointer::initialize() const {
     if (isStatic() && Base == 0)
       return;
 
+    // Nothing to do for these.
+    if (Desc->getNumElems() == 0)
+      return;
+
     InitMapPtr &IM = getInitMap();
     if (!IM)
       IM =

diff --git a/clang/lib/AST/Interp/Record.cpp b/clang/lib/AST/Interp/Record.cpp
@@ -7,6 +7,7 @@
 //===----------------------------------------------------------------------===//
 
 #include "Record.h"
+#include "clang/AST/ASTContext.h"
 
 using namespace clang;
 using namespace clang::interp;
@@ -27,6 +28,14 @@ Record::Record(const RecordDecl *Decl, BaseList &&SrcBases,
     VirtualBaseMap[V.Decl] = &V;
 }
 
+const std::string Record::getName() const {
+  std::string Ret;
+  llvm::raw_string_ostream OS(Ret);
+  Decl->getNameForDiagnostic(OS, Decl->getASTContext().getPrintingPolicy(),
+                             /*Qualified=*/true);
+  return Ret;
+}
+
 const Record::Field *Record::getField(const FieldDecl *FD) const {
   auto It = FieldMap.find(FD);
   assert(It != FieldMap.end() && "Missing field");

diff --git a/clang/lib/AST/Interp/Record.h b/clang/lib/AST/Interp/Record.h
@@ -51,7 +51,7 @@ class Record final {
   /// Returns the underlying declaration.
   const RecordDecl *getDecl() const { return Decl; }
   /// Returns the name of the underlying declaration.
-  const std::string getName() const { return Decl->getNameAsString(); }
+  const std::string getName() const;
   /// Checks if the record is a union.
   bool isUnion() const { return getDecl()->isUnion(); }
   /// Returns the size of the record.
@@ -100,6 +100,10 @@ class Record final {
   unsigned getNumVirtualBases() const { return VirtualBases.size(); }
   const Base *getVirtualBase(unsigned I) const { return &VirtualBases[I]; }
 
+  void dump(llvm::raw_ostream &OS, unsigned Indentation = 0,
+            unsigned Offset = 0) const;
+  void dump() const { dump(llvm::errs()); }
+
 private:
   /// Constructor used by Program to create record descriptors.
   Record(const RecordDecl *, BaseList &&Bases, FieldList &&Fields,

diff --git a/clang/lib/AST/StmtPrinter.cpp b/clang/lib/AST/StmtPrinter.cpp
@@ -292,8 +292,11 @@ void StmtPrinter::VisitLabelStmt(LabelStmt *Node) {
 }
 
 void StmtPrinter::VisitAttributedStmt(AttributedStmt *Node) {
-  for (const auto *Attr : Node->getAttrs()) {
+  llvm::ArrayRef<const Attr *> Attrs = Node->getAttrs();
+  for (const auto *Attr : Attrs) {
     Attr->printPretty(OS, Policy);
+    if (Attr != Attrs.back())
+      OS << ' ';
   }
 
   PrintStmt(Node->getSubStmt(), 0);

diff --git a/clang/lib/AST/StmtProfile.cpp b/clang/lib/AST/StmtProfile.cpp
@@ -2011,6 +2011,7 @@ void StmtProfiler::VisitMSPropertySubscriptExpr(
 void StmtProfiler::VisitCXXThisExpr(const CXXThisExpr *S) {
   VisitExpr(S);
   ID.AddBoolean(S->isImplicit());
+  ID.AddBoolean(S->isCapturedByCopyInLambdaWithExplicitObjectParameter());
 }
 
 void StmtProfiler::VisitCXXThrowExpr(const CXXThrowExpr *S) {

diff --git a/clang/lib/AST/TextNodeDumper.cpp b/clang/lib/AST/TextNodeDumper.cpp
@@ -1194,8 +1194,11 @@ void TextNodeDumper::VisitDeclRefExpr(const DeclRefExpr *Node) {
   case NOUR_Constant: OS << " non_odr_use_constant"; break;
   case NOUR_Discarded: OS << " non_odr_use_discarded"; break;
   }
-  if (Node->refersToEnclosingVariableOrCapture())
+  if (Node->isCapturedByCopyInLambdaWithExplicitObjectParameter())
+    OS << " dependent_capture";
+  else if (Node->refersToEnclosingVariableOrCapture())
     OS << " refers_to_enclosing_variable_or_capture";
+
   if (Node->isImmediateEscalating())
     OS << " immediate-escalating";
 }
@@ -1351,6 +1354,8 @@ void TextNodeDumper::VisitCXXBoolLiteralExpr(const CXXBoolLiteralExpr *Node) {
 void TextNodeDumper::VisitCXXThisExpr(const CXXThisExpr *Node) {
   if (Node->isImplicit())
     OS << " implicit";
+  if (Node->isCapturedByCopyInLambdaWithExplicitObjectParameter())
+    OS << " dependent_capture";
   OS << " this";
 }
 

diff --git a/clang/lib/CodeGen/CGBuiltin.cpp b/clang/lib/CodeGen/CGBuiltin.cpp
@@ -17288,6 +17288,16 @@ Value *CodeGenFunction::EmitPPCBuiltinExpr(unsigned BuiltinID,
     Value *Op1 = EmitScalarExpr(E->getArg(1));
     Value *Op2 = EmitScalarExpr(E->getArg(2));
     Value *Op3 = EmitScalarExpr(E->getArg(3));
+    // rldimi is 64-bit instruction, expand the intrinsic before isel to
+    // leverage peephole and avoid legalization efforts.
+    if (BuiltinID == PPC::BI__builtin_ppc_rldimi &&
+        !getTarget().getTriple().isPPC64()) {
+      Function *F = CGM.getIntrinsic(Intrinsic::fshl, Op0->getType());
+      Op2 = Builder.CreateZExt(Op2, Int64Ty);
+      Value *Shift = Builder.CreateCall(F, {Op0, Op0, Op2});
+      return Builder.CreateOr(Builder.CreateAnd(Shift, Op3),
+                              Builder.CreateAnd(Op1, Builder.CreateNot(Op3)));
+    }
     return Builder.CreateCall(
         CGM.getIntrinsic(BuiltinID == PPC::BI__builtin_ppc_rldimi
                              ? Intrinsic::ppc_rldimi

diff --git a/clang/lib/Frontend/FrontendActions.cpp b/clang/lib/Frontend/FrontendActions.cpp
@@ -453,7 +453,7 @@ class DefaultTemplateInstCallback : public TemplateInstantiationCallback {
       return "BuildingBuiltinDumpStructCall";
     case CodeSynthesisContext::BuildingDeductionGuides:
       return "BuildingDeductionGuides";
-    case Sema::CodeSynthesisContext::TypeAliasTemplateInstantiation:
+    case CodeSynthesisContext::TypeAliasTemplateInstantiation:
       return "TypeAliasTemplateInstantiation";
     }
     return "";

diff --git a/clang/lib/Frontend/InitPreprocessor.cpp b/clang/lib/Frontend/InitPreprocessor.cpp
@@ -720,10 +720,7 @@ static void InitializeCPlusPlusFeatureTestMacros(const LangOptions &LangOpts,
   if (LangOpts.CPlusPlus20) {
     Builder.defineMacro("__cpp_aggregate_paren_init", "201902L");
 
-    // P0848 is implemented, but we're still waiting for other concepts
-    // issues to be addressed before bumping __cpp_concepts up to 202002L.
-    // Refer to the discussion of this at https://reviews.llvm.org/D128619.
-    Builder.defineMacro("__cpp_concepts", "201907L");
+    Builder.defineMacro("__cpp_concepts", "202002");
     Builder.defineMacro("__cpp_conditional_explicit", "201806L");
     Builder.defineMacro("__cpp_consteval", "202211L");
     Builder.defineMacro("__cpp_constexpr_dynamic_alloc", "201907L");

diff --git a/clang/lib/Sema/SemaChecking.cpp b/clang/lib/Sema/SemaChecking.cpp
@@ -5232,7 +5232,6 @@ static bool isPPC_64Builtin(unsigned BuiltinID) {
   case PPC::BI__builtin_ppc_fetch_and_andlp:
   case PPC::BI__builtin_ppc_fetch_and_orlp:
   case PPC::BI__builtin_ppc_fetch_and_swaplp:
-  case PPC::BI__builtin_ppc_rldimi:
     return true;
   }
   return false;

diff --git a/clang/lib/Sema/SemaExpr.cpp b/clang/lib/Sema/SemaExpr.cpp
@@ -3442,10 +3442,11 @@ static bool ShouldLookupResultBeMultiVersionOverload(const LookupResult &R) {
 
 ExprResult Sema::BuildDeclarationNameExpr(const CXXScopeSpec &SS,
                                           LookupResult &R, bool NeedsADL,
-                                          bool AcceptInvalidDecl) {
+                                          bool AcceptInvalidDecl,
+                                          bool NeedUnresolved) {
   // If this is a single, fully-resolved result and we don't need ADL,
   // just build an ordinary singleton decl ref.
-  if (!NeedsADL && R.isSingleResult() &&
+  if (!NeedUnresolved && !NeedsADL && R.isSingleResult() &&
       !R.getAsSingle<FunctionTemplateDecl>() &&
       !ShouldLookupResultBeMultiVersionOverload(R))
     return BuildDeclarationNameExpr(SS, R.getLookupNameInfo(), R.getFoundDecl(),
@@ -18981,8 +18982,10 @@ void Sema::MarkFunctionReferenced(SourceLocation Loc, FunctionDecl *Func,
   // Note that we skip the implicit instantiation of templates that are only
   // used in unused default arguments or by recursive calls to themselves.
   // This is formally non-conforming, but seems reasonable in practice.
-  bool NeedDefinition = !IsRecursiveCall && (OdrUse == OdrUseContext::Used ||
-                                             NeededForConstantEvaluation);
+  bool NeedDefinition =
+      !IsRecursiveCall &&
+      (OdrUse == OdrUseContext::Used ||
+       (NeededForConstantEvaluation && !Func->isPureVirtual()));
 
   // C++14 [temp.expl.spec]p6:
   //   If a template [...] is explicitly specialized then that specialization
@@ -20719,20 +20722,42 @@ void Sema::MarkVariableReferenced(SourceLocation Loc, VarDecl *Var) {
 static void FixDependencyOfIdExpressionsInLambdaWithDependentObjectParameter(
     Sema &SemaRef, ValueDecl *D, Expr *E) {
   auto *ID = dyn_cast<DeclRefExpr>(E);
-  if (!ID || ID->isTypeDependent())
+  if (!ID || ID->isTypeDependent() || !ID->refersToEnclosingVariableOrCapture())
     return;
 
+  // If any enclosing lambda with a dependent explicit object parameter either
+  // explicitly captures the variable by value, or has a capture default of '='
+  // and does not capture the variable by reference, then the type of the DRE
+  // is dependent on the type of that lambda's explicit object parameter.
   auto IsDependent = [&]() {
-    const LambdaScopeInfo *LSI = SemaRef.getCurLambda();
-    if (!LSI)
-      return false;
-    if (!LSI->ExplicitObjectParameter ||
-        !LSI->ExplicitObjectParameter->getType()->isDependentType())
-      return false;
-    if (!LSI->CaptureMap.count(D))
-      return false;
-    const Capture &Cap = LSI->getCapture(D);
-    return !Cap.isCopyCapture();
+    for (auto *Scope : llvm::reverse(SemaRef.FunctionScopes)) {
+      auto *LSI = dyn_cast<sema::LambdaScopeInfo>(Scope);
+      if (!LSI)
+        continue;
+
+      if (LSI->Lambda && !LSI->Lambda->Encloses(SemaRef.CurContext) &&
+          LSI->AfterParameterList)
+        return false;
+
+      const auto *MD = LSI->CallOperator;
+      if (MD->getType().isNull())
+        continue;
+
+      const auto *Ty = cast<FunctionProtoType>(MD->getType());
+      if (!Ty || !MD->isExplicitObjectMemberFunction() ||
+          !Ty->getParamType(0)->isDependentType())
+        continue;
+
+      if (auto *C = LSI->CaptureMap.count(D) ? &LSI->getCapture(D) : nullptr) {
+        if (C->isCopyCapture())
+          return true;
+        continue;
+      }
+
+      if (LSI->ImpCaptureStyle == LambdaScopeInfo::ImpCap_LambdaByval)
+        return true;
+    }
+    return false;
   }();
 
   ID->setCapturedByCopyInLambdaWithExplicitObjectParameter(

diff --git a/clang/lib/Sema/SemaExprCXX.cpp b/clang/lib/Sema/SemaExprCXX.cpp
@@ -1415,26 +1415,42 @@ bool Sema::CheckCXXThisCapture(SourceLocation Loc, const bool Explicit,
 }
 
 ExprResult Sema::ActOnCXXThis(SourceLocation Loc) {
-  /// C++ 9.3.2: In the body of a non-static member function, the keyword this
-  /// is a non-lvalue expression whose value is the address of the object for
-  /// which the function is called.
+  // C++20 [expr.prim.this]p1:
+  //   The keyword this names a pointer to the object for which an
+  //   implicit object member function is invoked or a non-static
+  //   data member's initializer is evaluated.
   QualType ThisTy = getCurrentThisType();
 
-  if (ThisTy.isNull()) {
-    DeclContext *DC = getFunctionLevelDeclContext();
+  if (CheckCXXThisType(Loc, ThisTy))
+    return ExprError();
 
-    if (const auto *Method = dyn_cast<CXXMethodDecl>(DC);
-        Method && Method->isExplicitObjectMemberFunction()) {
-      return Diag(Loc, diag::err_invalid_this_use) << 1;
-    }
+  return BuildCXXThisExpr(Loc, ThisTy, /*IsImplicit=*/false);
+}
 
-    if (isLambdaCallWithExplicitObjectParameter(CurContext))
-      return Diag(Loc, diag::err_invalid_this_use) << 1;
+bool Sema::CheckCXXThisType(SourceLocation Loc, QualType Type) {
+  if (!Type.isNull())
+    return false;
 
-    return Diag(Loc, diag::err_invalid_this_use) << 0;
+  // C++20 [expr.prim.this]p3:
+  //   If a declaration declares a member function or member function template
+  //   of a class X, the expression this is a prvalue of type
+  //   "pointer to cv-qualifier-seq X" wherever X is the current class between
+  //   the optional cv-qualifier-seq and the end of the function-definition,
+  //   member-declarator, or declarator. It shall not appear within the
+  //   declaration of either a static member function or an explicit object
+  //   member function of the current class (although its type and value
+  //   category are defined within such member functions as they are within
+  //   an implicit object member function).
+  DeclContext *DC = getFunctionLevelDeclContext();
+  if (const auto *Method = dyn_cast<CXXMethodDecl>(DC);
+      Method && Method->isExplicitObjectMemberFunction()) {
+    Diag(Loc, diag::err_invalid_this_use) << 1;
+  } else if (isLambdaCallWithExplicitObjectParameter(CurContext)) {
+    Diag(Loc, diag::err_invalid_this_use) << 1;
+  } else {
+    Diag(Loc, diag::err_invalid_this_use) << 0;
   }
-
-  return BuildCXXThisExpr(Loc, ThisTy, /*IsImplicit=*/false);
+  return true;
 }
 
 Expr *Sema::BuildCXXThisExpr(SourceLocation Loc, QualType Type,
@@ -1446,6 +1462,42 @@ Expr *Sema::BuildCXXThisExpr(SourceLocation Loc, QualType Type,
 
 void Sema::MarkThisReferenced(CXXThisExpr *This) {
   CheckCXXThisCapture(This->getExprLoc());
+  if (This->isTypeDependent())
+    return;
+
+  // Check if 'this' is captured by value in a lambda with a dependent explicit
+  // object parameter, and mark it as type-dependent as well if so.
+  auto IsDependent = [&]() {
+    for (auto *Scope : llvm::reverse(FunctionScopes)) {
+      auto *LSI = dyn_cast<sema::LambdaScopeInfo>(Scope);
+      if (!LSI)
+        continue;
+
+      if (LSI->Lambda && !LSI->Lambda->Encloses(CurContext) &&
+          LSI->AfterParameterList)
+        return false;
+
+      // If this lambda captures 'this' by value, then 'this' is dependent iff
+      // this lambda has a dependent explicit object parameter. If we can't
+      // determine whether it does (e.g. because the CXXMethodDecl's type is
+      // null), assume it doesn't.
+      if (LSI->isCXXThisCaptured()) {
+        if (!LSI->getCXXThisCapture().isCopyCapture())
+          continue;
+
+        const auto *MD = LSI->CallOperator;
+        if (MD->getType().isNull())
+          return false;
+
+        const auto *Ty = cast<FunctionProtoType>(MD->getType());
+        return Ty && MD->isExplicitObjectMemberFunction() &&
+               Ty->getParamType(0)->isDependentType();
+      }
+    }
+    return false;
+  }();
+
+  This->setCapturedByCopyInLambdaWithExplicitObjectParameter(IsDependent);
 }
 
 bool Sema::isThisOutsideMemberFunctionBody(QualType BaseType) {
@@ -5566,8 +5618,8 @@ static bool EvaluateUnaryTypeTrait(Sema &Self, TypeTrait UTT,
   }
 }
 
-static bool EvaluateBinaryTypeTrait(Sema &Self, TypeTrait BTT, QualType LhsT,
-                                    QualType RhsT, SourceLocation KeyLoc);
+static bool EvaluateBinaryTypeTrait(Sema &Self, TypeTrait BTT, const TypeSourceInfo *Lhs,
+                                    const TypeSourceInfo *Rhs, SourceLocation KeyLoc);
 
 static bool EvaluateBooleanTypeTrait(Sema &S, TypeTrait Kind,
                                      SourceLocation KWLoc,
@@ -5583,8 +5635,8 @@ static bool EvaluateBooleanTypeTrait(Sema &S, TypeTrait Kind,
   // Evaluate ReferenceBindsToTemporary and ReferenceConstructsFromTemporary
   // alongside the IsConstructible traits to avoid duplication.
   if (Kind <= BTT_Last && Kind != BTT_ReferenceBindsToTemporary && Kind != BTT_ReferenceConstructsFromTemporary)
-    return EvaluateBinaryTypeTrait(S, Kind, Args[0]->getType(),
-                                   Args[1]->getType(), RParenLoc);
+    return EvaluateBinaryTypeTrait(S, Kind, Args[0],
+                                   Args[1], RParenLoc);
 
   switch (Kind) {
   case clang::BTT_ReferenceBindsToTemporary:
@@ -5679,8 +5731,8 @@ static bool EvaluateBooleanTypeTrait(Sema &S, TypeTrait Kind,
       if (U->isReferenceType())
         return false;
 
-      QualType TPtr = S.Context.getPointerType(S.BuiltinRemoveReference(T, UnaryTransformType::RemoveCVRef, {}));
-      QualType UPtr = S.Context.getPointerType(S.BuiltinRemoveReference(U, UnaryTransformType::RemoveCVRef, {}));
+      TypeSourceInfo *TPtr = S.Context.CreateTypeSourceInfo(S.Context.getPointerType(S.BuiltinRemoveReference(T, UnaryTransformType::RemoveCVRef, {})));
+      TypeSourceInfo *UPtr = S.Context.CreateTypeSourceInfo(S.Context.getPointerType(S.BuiltinRemoveReference(U, UnaryTransformType::RemoveCVRef, {})));
       return EvaluateBinaryTypeTrait(S, TypeTrait::BTT_IsConvertibleTo, UPtr, TPtr, RParenLoc);
     }
 
@@ -5814,8 +5866,11 @@ ExprResult Sema::ActOnTypeTrait(TypeTrait Kind, SourceLocation KWLoc,
   return BuildTypeTrait(Kind, KWLoc, ConvertedArgs, RParenLoc);
 }
 
-static bool EvaluateBinaryTypeTrait(Sema &Self, TypeTrait BTT, QualType LhsT,
-                                    QualType RhsT, SourceLocation KeyLoc) {
+static bool EvaluateBinaryTypeTrait(Sema &Self, TypeTrait BTT, const TypeSourceInfo *Lhs,
+                                    const TypeSourceInfo *Rhs, SourceLocation KeyLoc) {
+  QualType LhsT = Lhs->getType();
+  QualType RhsT = Rhs->getType();
+
   assert(!LhsT->isDependentType() && !RhsT->isDependentType() &&
          "Cannot evaluate traits of dependent types");
 

diff --git a/clang/lib/Sema/SemaExprMember.cpp b/clang/lib/Sema/SemaExprMember.cpp
@@ -61,6 +61,10 @@ enum IMAKind {
   /// The reference is a contextually-permitted abstract member reference.
   IMA_Abstract,
 
+  /// Whether the context is static is dependent on the enclosing template (i.e.
+  /// in a dependent class scope explicit specialization).
+  IMA_Dependent,
+
   /// The reference may be to an unresolved using declaration and the
   /// context is not an instance method.
   IMA_Unresolved_StaticOrExplicitContext,
@@ -91,10 +95,18 @@ static IMAKind ClassifyImplicitMemberAccess(Sema &SemaRef,
 
   DeclContext *DC = SemaRef.getFunctionLevelDeclContext();
 
-  bool isStaticOrExplicitContext =
-      SemaRef.CXXThisTypeOverride.isNull() &&
-      (!isa<CXXMethodDecl>(DC) || cast<CXXMethodDecl>(DC)->isStatic() ||
-       cast<CXXMethodDecl>(DC)->isExplicitObjectMemberFunction());
+  bool couldInstantiateToStatic = false;
+  bool isStaticOrExplicitContext = SemaRef.CXXThisTypeOverride.isNull();
+
+  if (auto *MD = dyn_cast<CXXMethodDecl>(DC)) {
+    if (MD->isImplicitObjectMemberFunction()) {
+      isStaticOrExplicitContext = false;
+      // A dependent class scope function template explicit specialization
+      // that is neither declared 'static' nor with an explicit object
+      // parameter could instantiate to a static or non-static member function.
+      couldInstantiateToStatic = MD->getDependentSpecializationInfo();
+    }
+  }
 
   if (R.isUnresolvableResult())
     return isStaticOrExplicitContext ? IMA_Unresolved_StaticOrExplicitContext
@@ -123,6 +135,9 @@ static IMAKind ClassifyImplicitMemberAccess(Sema &SemaRef,
   if (Classes.empty())
     return IMA_Static;
 
+  if (couldInstantiateToStatic)
+    return IMA_Dependent;
+
   // C++11 [expr.prim.general]p12:
   //   An id-expression that denotes a non-static data member or non-static
   //   member function of a class can only be used:
@@ -268,27 +283,30 @@ ExprResult Sema::BuildPossibleImplicitMemberExpr(
     const CXXScopeSpec &SS, SourceLocation TemplateKWLoc, LookupResult &R,
     const TemplateArgumentListInfo *TemplateArgs, const Scope *S,
     UnresolvedLookupExpr *AsULE) {
-  switch (ClassifyImplicitMemberAccess(*this, R)) {
+  switch (IMAKind Classification = ClassifyImplicitMemberAccess(*this, R)) {
   case IMA_Instance:
-    return BuildImplicitMemberExpr(SS, TemplateKWLoc, R, TemplateArgs, true, S);
-
   case IMA_Mixed:
   case IMA_Mixed_Unrelated:
   case IMA_Unresolved:
-    return BuildImplicitMemberExpr(SS, TemplateKWLoc, R, TemplateArgs, false,
-                                   S);
-
+    return BuildImplicitMemberExpr(
+        SS, TemplateKWLoc, R, TemplateArgs,
+        /*IsKnownInstance=*/Classification == IMA_Instance, S);
   case IMA_Field_Uneval_Context:
     Diag(R.getNameLoc(), diag::warn_cxx98_compat_non_static_member_use)
       << R.getLookupNameInfo().getName();
     [[fallthrough]];
   case IMA_Static:
   case IMA_Abstract:
+  case IMA_Dependent:
   case IMA_Mixed_StaticOrExplicitContext:
   case IMA_Unresolved_StaticOrExplicitContext:
     if (TemplateArgs || TemplateKWLoc.isValid())
-      return BuildTemplateIdExpr(SS, TemplateKWLoc, R, false, TemplateArgs);
-    return AsULE ? AsULE : BuildDeclarationNameExpr(SS, R, false);
+      return BuildTemplateIdExpr(SS, TemplateKWLoc, R, /*RequiresADL=*/false,
+                                 TemplateArgs);
+    return AsULE ? AsULE
+                 : BuildDeclarationNameExpr(
+                       SS, R, /*NeedsADL=*/false, /*AcceptInvalidDecl=*/false,
+                       /*NeedUnresolved=*/Classification == IMA_Dependent);
 
   case IMA_Error_StaticOrExplicitContext:
   case IMA_Error_Unrelated:

diff --git a/clang/lib/Sema/SemaOpenACC.cpp b/clang/lib/Sema/SemaOpenACC.cpp
@@ -39,14 +39,11 @@ bool diagnoseConstructAppertainment(SemaOpenACC &S, OpenACCDirectiveKind K,
 
 bool doesClauseApplyToDirective(OpenACCDirectiveKind DirectiveKind,
                                 OpenACCClauseKind ClauseKind) {
-  switch (ClauseKind) {
-    // FIXME: For each clause as we implement them, we can add the
-    // 'legalization' list here.
-  default:
-    // Do nothing so we can go to the 'unimplemented' diagnostic instead.
-    return true;
-  }
-  llvm_unreachable("Invalid clause kind");
+  // FIXME: For each clause as we implement them, we can add the
+  // 'legalization' list here.
+
+  // Do nothing so we can go to the 'unimplemented' diagnostic instead.
+  return true;
 }
 } // namespace
 

diff --git a/clang/lib/Sema/SemaTemplate.cpp b/clang/lib/Sema/SemaTemplate.cpp
@@ -4494,15 +4494,13 @@ QualType Sema::CheckTemplateIdType(TemplateName Name,
         AliasTemplate->getTemplateParameters()->getDepth());
 
     LocalInstantiationScope Scope(*this);
-    InstantiatingTemplate Inst(*this, TemplateLoc, Template);
+    InstantiatingTemplate Inst(
+        *this, /*PointOfInstantiation=*/TemplateLoc,
+        /*Entity=*/AliasTemplate,
+        /*TemplateArgs=*/TemplateArgLists.getInnermost());
     if (Inst.isInvalid())
       return QualType();
 
-    InstantiatingTemplate InstTemplate(
-        *this, /*PointOfInstantiation=*/AliasTemplate->getBeginLoc(),
-        /*Template=*/AliasTemplate,
-        /*TemplateArgs=*/TemplateArgLists.getInnermost());
-
     std::optional<ContextRAII> SavedContext;
     if (!AliasTemplate->getDeclContext()->isFileContext())
       SavedContext.emplace(*this, AliasTemplate->getDeclContext());

diff --git a/clang/lib/Sema/SemaTemplateInstantiate.cpp b/clang/lib/Sema/SemaTemplateInstantiate.cpp
@@ -737,11 +737,11 @@ Sema::InstantiatingTemplate::InstantiatingTemplate(
 
 Sema::InstantiatingTemplate::InstantiatingTemplate(
     Sema &SemaRef, SourceLocation PointOfInstantiation,
-    TypeAliasTemplateDecl *Template, ArrayRef<TemplateArgument> TemplateArgs,
+    TypeAliasTemplateDecl *Entity, ArrayRef<TemplateArgument> TemplateArgs,
     SourceRange InstantiationRange)
     : InstantiatingTemplate(
-          SemaRef, Sema::CodeSynthesisContext::TypeAliasTemplateInstantiation,
-          PointOfInstantiation, InstantiationRange, /*Entity=*/Template,
+          SemaRef, CodeSynthesisContext::TypeAliasTemplateInstantiation,
+          PointOfInstantiation, InstantiationRange, /*Entity=*/Entity,
           /*Template=*/nullptr, TemplateArgs) {}
 
 Sema::InstantiatingTemplate::InstantiatingTemplate(
@@ -983,11 +983,6 @@ void Sema::PrintInstantiationStack() {
         Diags.Report(Active->PointOfInstantiation,
                      diag::note_template_class_instantiation_here)
             << CTD << Active->InstantiationRange;
-      } else {
-        Diags.Report(Active->PointOfInstantiation,
-                     diag::note_template_type_alias_instantiation_here)
-          << cast<TypeAliasTemplateDecl>(D)
-          << Active->InstantiationRange;
       }
       break;
     }
@@ -1262,6 +1257,10 @@ void Sema::PrintInstantiationStack() {
                    diag::note_building_deduction_guide_here);
       break;
     case CodeSynthesisContext::TypeAliasTemplateInstantiation:
+      Diags.Report(Active->PointOfInstantiation,
+                   diag::note_template_type_alias_instantiation_here)
+          << cast<TypeAliasTemplateDecl>(Active->Entity)
+          << Active->InstantiationRange;
       break;
     }
   }
@@ -1278,12 +1277,13 @@ std::optional<TemplateDeductionInfo *> Sema::isSFINAEContext() const {
        ++Active)
   {
     switch (Active->Kind) {
-    case CodeSynthesisContext::TemplateInstantiation:
+    case CodeSynthesisContext::TypeAliasTemplateInstantiation:
       // An instantiation of an alias template may or may not be a SFINAE
       // context, depending on what else is on the stack.
       if (isa<TypeAliasTemplateDecl>(Active->Entity))
         break;
       [[fallthrough]];
+    case CodeSynthesisContext::TemplateInstantiation:
     case CodeSynthesisContext::DefaultFunctionArgumentInstantiation:
     case CodeSynthesisContext::ExceptionSpecInstantiation:
     case CodeSynthesisContext::ConstraintsCheck:
@@ -1340,7 +1340,6 @@ std::optional<TemplateDeductionInfo *> Sema::isSFINAEContext() const {
       break;
 
     case CodeSynthesisContext::Memoization:
-    case CodeSynthesisContext::TypeAliasTemplateInstantiation:
       break;
     }
 

diff --git a/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp b/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp
@@ -1119,6 +1119,8 @@ TemplateDeclInstantiator::VisitTypeAliasTemplateDecl(TypeAliasTemplateDecl *D) {
           : (TemplateArgs.begin() + TemplateArgs.getNumLevels() - 1 -
              D->getTemplateDepth())
                 ->Args);
+  if (InstTemplate.isInvalid())
+    return nullptr;
 
   TypeAliasTemplateDecl *PrevAliasTemplate = nullptr;
   if (getPreviousDeclForInstantiation<TypedefNameDecl>(Pattern)) {
@@ -5091,6 +5093,14 @@ void Sema::InstantiateFunctionDefinition(SourceLocation PointOfInstantiation,
   EnterExpressionEvaluationContext EvalContext(
       *this, Sema::ExpressionEvaluationContext::PotentiallyEvaluated);
 
+  Qualifiers ThisTypeQuals;
+  CXXRecordDecl *ThisContext = nullptr;
+  if (CXXMethodDecl *Method = dyn_cast<CXXMethodDecl>(Function)) {
+    ThisContext = Method->getParent();
+    ThisTypeQuals = Method->getMethodQualifiers();
+  }
+  CXXThisScopeRAII ThisScope(*this, ThisContext, ThisTypeQuals);
+
   // Introduce a new scope where local variable instantiations will be
   // recorded, unless we're actually a member function within a local
   // class, in which case we need to merge our results with the parent

diff --git a/clang/lib/Sema/TreeTransform.h b/clang/lib/Sema/TreeTransform.h
@@ -3307,12 +3307,13 @@ class TreeTransform {
 
   /// Build a new C++ "this" expression.
   ///
-  /// By default, builds a new "this" expression without performing any
-  /// semantic analysis. Subclasses may override this routine to provide
-  /// different behavior.
+  /// By default, performs semantic analysis to build a new "this" expression.
+  /// Subclasses may override this routine to provide different behavior.
   ExprResult RebuildCXXThisExpr(SourceLocation ThisLoc,
                                 QualType ThisType,
                                 bool isImplicit) {
+    if (getSema().CheckCXXThisType(ThisLoc, ThisType))
+      return ExprError();
     return getSema().BuildCXXThisExpr(ThisLoc, ThisType, isImplicit);
   }
 
@@ -11177,8 +11178,8 @@ TreeTransform<Derived>::TransformDeclRefExpr(DeclRefExpr *E) {
   }
 
   if (!getDerived().AlwaysRebuild() &&
-      QualifierLoc == E->getQualifierLoc() &&
-      ND == E->getDecl() &&
+      !E->isCapturedByCopyInLambdaWithExplicitObjectParameter() &&
+      QualifierLoc == E->getQualifierLoc() && ND == E->getDecl() &&
       Found == E->getFoundDecl() &&
       NameInfo.getName() == E->getDecl()->getDeclName() &&
       !E->hasExplicitTemplateArgs()) {
@@ -12641,9 +12642,17 @@ TreeTransform<Derived>::TransformCXXThisExpr(CXXThisExpr *E) {
   //
   // In other contexts, the type of `this` may be overrided
   // for type deduction, so we need to recompute it.
-  QualType T = getSema().getCurLambda() ?
-                   getDerived().TransformType(E->getType())
-                 : getSema().getCurrentThisType();
+  //
+  // Always recompute the type if we're in the body of a lambda, and
+  // 'this' is dependent on a lambda's explicit object parameter.
+  QualType T = [&]() {
+    auto &S = getSema();
+    if (E->isCapturedByCopyInLambdaWithExplicitObjectParameter())
+      return S.getCurrentThisType();
+    if (S.getCurLambda())
+      return getDerived().TransformType(E->getType());
+    return S.getCurrentThisType();
+  }();
 
   if (!getDerived().AlwaysRebuild() && T == E->getType()) {
     // Mark it referenced in the new context regardless.

diff --git a/clang/lib/Serialization/ASTReaderDecl.cpp b/clang/lib/Serialization/ASTReaderDecl.cpp
@@ -94,8 +94,6 @@ namespace clang {
     GlobalDeclID NamedDeclForTagDecl = 0;
     IdentifierInfo *TypedefNameForLinkage = nullptr;
 
-    bool HasPendingBody = false;
-
     ///A flag to carry the information for a decl from the entity is
     /// used. We use it to delay the marking of the canonical decl as used until
     /// the entire declaration is deserialized and merged.
@@ -314,9 +312,6 @@ namespace clang {
     static void markIncompleteDeclChainImpl(Redeclarable<DeclT> *D);
     static void markIncompleteDeclChainImpl(...);
 
-    /// Determine whether this declaration has a pending body.
-    bool hasPendingBody() const { return HasPendingBody; }
-
     void ReadFunctionDefinition(FunctionDecl *FD);
     void Visit(Decl *D);
 
@@ -541,7 +536,6 @@ void ASTDeclReader::ReadFunctionDefinition(FunctionDecl *FD) {
   }
   // Store the offset of the body so we can lazily load it later.
   Reader.PendingBodies[FD] = GetCurrentCursorOffset();
-  HasPendingBody = true;
 }
 
 void ASTDeclReader::Visit(Decl *D) {
@@ -1164,7 +1158,6 @@ void ASTDeclReader::VisitObjCMethodDecl(ObjCMethodDecl *MD) {
     // Load the body on-demand. Most clients won't care, because method
     // definitions rarely show up in headers.
     Reader.PendingBodies[MD] = GetCurrentCursorOffset();
-    HasPendingBody = true;
   }
   MD->setSelfDecl(readDeclAs<ImplicitParamDecl>());
   MD->setCmdDecl(readDeclAs<ImplicitParamDecl>());
@@ -4156,8 +4149,7 @@ Decl *ASTReader::ReadDeclRecord(DeclID ID) {
   // AST consumer might need to know about, queue it.
   // We don't pass it to the consumer immediately because we may be in recursive
   // loading, and some declarations may still be initializing.
-  PotentiallyInterestingDecls.push_back(
-      InterestingDecl(D, Reader.hasPendingBody()));
+  PotentiallyInterestingDecls.push_back(D);
 
   return D;
 }
@@ -4179,10 +4171,10 @@ void ASTReader::PassInterestingDeclsToConsumer() {
   EagerlyDeserializedDecls.clear();
 
   while (!PotentiallyInterestingDecls.empty()) {
-    InterestingDecl D = PotentiallyInterestingDecls.front();
+    Decl *D = PotentiallyInterestingDecls.front();
     PotentiallyInterestingDecls.pop_front();
-    if (isConsumerInterestedIn(getContext(), D.getDecl(), D.hasPendingBody()))
-      PassInterestingDeclToConsumer(D.getDecl());
+    if (isConsumerInterestedIn(getContext(), D, PendingBodies.count(D)))
+      PassInterestingDeclToConsumer(D);
   }
 }
 
@@ -4239,9 +4231,8 @@ void ASTReader::loadDeclUpdateRecords(PendingUpdateRecord &Record) {
       // We might have made this declaration interesting. If so, remember that
       // we need to hand it off to the consumer.
       if (!WasInteresting &&
-          isConsumerInterestedIn(getContext(), D, Reader.hasPendingBody())) {
-        PotentiallyInterestingDecls.push_back(
-            InterestingDecl(D, Reader.hasPendingBody()));
+          isConsumerInterestedIn(getContext(), D, PendingBodies.count(D))) {
+        PotentiallyInterestingDecls.push_back(D);
         WasInteresting = true;
       }
     }

diff --git a/clang/lib/Serialization/ASTReaderStmt.cpp b/clang/lib/Serialization/ASTReaderStmt.cpp
@@ -1841,6 +1841,7 @@ void ASTStmtReader::VisitCXXThisExpr(CXXThisExpr *E) {
   VisitExpr(E);
   E->setLocation(readSourceLocation());
   E->setImplicit(Record.readInt());
+  E->setCapturedByCopyInLambdaWithExplicitObjectParameter(Record.readInt());
 }
 
 void ASTStmtReader::VisitCXXThrowExpr(CXXThrowExpr *E) {

diff --git a/clang/lib/Serialization/ASTWriterStmt.cpp b/clang/lib/Serialization/ASTWriterStmt.cpp
@@ -1839,6 +1839,7 @@ void ASTStmtWriter::VisitCXXThisExpr(CXXThisExpr *E) {
   VisitExpr(E);
   Record.AddSourceLocation(E->getLocation());
   Record.push_back(E->isImplicit());
+  Record.push_back(E->isCapturedByCopyInLambdaWithExplicitObjectParameter());
 
   Code = serialization::EXPR_CXX_THIS;
 }

diff --git a/clang/test/APINotes/retain-count-convention.m b/clang/test/APINotes/retain-count-convention.m
@@ -5,15 +5,15 @@
 
 #import <SimpleKit/SimpleKit.h>
 
-// CHECK: void *getCFOwnedToUnowned(void) __attribute__((cf_returns_not_retained));
-// CHECK: void *getCFUnownedToOwned(void) __attribute__((cf_returns_retained));
-// CHECK: void *getCFOwnedToNone(void) __attribute__((cf_unknown_transfer));
-// CHECK: id getObjCOwnedToUnowned(void) __attribute__((ns_returns_not_retained));
-// CHECK: id getObjCUnownedToOwned(void) __attribute__((ns_returns_retained));
-// CHECK: int indirectGetCFOwnedToUnowned(void * _Nullable *out __attribute__((cf_returns_not_retained)));
-// CHECK: int indirectGetCFUnownedToOwned(void * _Nullable *out __attribute__((cf_returns_retained)));
+// CHECK: __attribute__((cf_returns_not_retained)) void *getCFOwnedToUnowned(void);
+// CHECK: __attribute__((cf_returns_retained)) void *getCFUnownedToOwned(void);
+// CHECK: __attribute__((cf_unknown_transfer)) void *getCFOwnedToNone(void);
+// CHECK: __attribute__((ns_returns_not_retained)) id getObjCOwnedToUnowned(void);
+// CHECK: __attribute__((ns_returns_retained)) id getObjCUnownedToOwned(void);
+// CHECK: int indirectGetCFOwnedToUnowned(__attribute__((cf_returns_not_retained)) void * _Nullable *out);
+// CHECK: int indirectGetCFUnownedToOwned(__attribute__((cf_returns_retained)) void * _Nullable *out);
 // CHECK: int indirectGetCFOwnedToNone(void * _Nullable *out);
-// CHECK: int indirectGetCFNoneToOwned(void **out __attribute__((cf_returns_not_retained)));
+// CHECK: int indirectGetCFNoneToOwned(__attribute__((cf_returns_not_retained)) void **out);
 
 // CHECK-LABEL: @interface MethodTest
 // CHECK: - (id)getOwnedToUnowned __attribute__((ns_returns_not_retained));

diff --git a/clang/test/APINotes/versioned.m b/clang/test/APINotes/versioned.m
@@ -13,7 +13,7 @@
 #import <VersionedKit/VersionedKit.h>
 
 // CHECK-UNVERSIONED: void moveToPointDUMP(double x, double y) __attribute__((swift_name("moveTo(x:y:)")));
-// CHECK-VERSIONED: void moveToPointDUMP(double x, double y) __attribute__((swift_name("moveTo(a:b:)")));
+// CHECK-VERSIONED:__attribute__((swift_name("moveTo(a:b:)"))) void moveToPointDUMP(double x, double y);
 
 // CHECK-DUMP-LABEL: Dumping moveToPointDUMP
 // CHECK-VERSIONED-DUMP: SwiftVersionedAdditionAttr {{.+}} Implicit 3.0 IsReplacedByActive{{$}}
@@ -65,7 +65,7 @@
 
 // CHECK-DUMP-NOT: Dumping
 
-// CHECK-UNVERSIONED: void acceptClosure(void (^block)(void) __attribute__((noescape)));
+// CHECK-UNVERSIONED: void acceptClosure(__attribute__((noescape)) void (^block)(void));
 // CHECK-VERSIONED: void acceptClosure(void (^block)(void));
 
 // CHECK-UNVERSIONED: void privateFunc(void) __attribute__((swift_private));

diff --git a/clang/test/AST/Interp/arrays.cpp b/clang/test/AST/Interp/arrays.cpp
@@ -566,3 +566,7 @@ char melchizedek[2200000000];
 typedef decltype(melchizedek[1] - melchizedek[0]) ptrdiff_t;
 constexpr ptrdiff_t d1 = &melchizedek[0x7fffffff] - &melchizedek[0]; // ok
 constexpr ptrdiff_t d3 = &melchizedek[0] - &melchizedek[0x80000000u]; // ok
+
+/// GH#88018
+const int SZA[] = {};
+void testZeroSizedArrayAccess() { unsigned c = SZA[4]; }
diff --git a/clang/test/AST/Interp/ms.cpp b/clang/test/AST/Interp/ms.cpp
@@ -6,3 +6,5 @@
 
 /// Used to assert because the two parameters to _rotl do not have the same type.
 static_assert(_rotl(0x01, 5) == 32);
+
+static_assert(alignof(__unaligned int) == 1, "");
diff --git a/clang/test/AST/Interp/weak.cpp b/clang/test/AST/Interp/weak.cpp
@@ -0,0 +1,15 @@
+// RUN: %clang_cc1 -std=c++20 -fexperimental-new-constant-interpreter -verify=expected,both %s
+// RUN: %clang_cc1 -std=c++20 -verify=ref,both %s
+
+
+
+
+/// FIXME: The new interpreter also emits the "address of weak declaration" note in the pointer-to-bool case.
+
+[[gnu::weak]] extern int a;
+int ha[(bool)&a]; // both-warning {{variable length arrays in C++ are a Clang extension}} \
+                  // expected-note {{comparison against address of weak declaration}} \
+                  // both-error {{variable length array declaration not allowed at file scope}}
+int ha2[&a == nullptr]; // both-warning {{variable length arrays in C++ are a Clang extension}} \
+                        // both-note {{comparison against address of weak declaration '&a' can only be performed at runtime}} \
+                        // both-error {{variable length array declaration not allowed at file scope}}
diff --git a/clang/test/AST/ast-print-method-decl.cpp b/clang/test/AST/ast-print-method-decl.cpp
@@ -94,7 +94,7 @@ struct DefMethodsWithoutBody {
   // CHECK-NEXT: DefMethodsWithoutBody() = default;
   ~DefMethodsWithoutBody() = default;
 
-  // CHECK-NEXT: __attribute__((alias("X"))) void m1();
+  // CHECK-NEXT: void m1() __attribute__((alias("X")));
   void m1() __attribute__((alias("X")));
 
   // CHECK-NEXT: };

diff --git a/clang/test/AST/ast-print-no-sanitize.cpp b/clang/test/AST/ast-print-no-sanitize.cpp
@@ -4,4 +4,4 @@ void should_not_crash_1() __attribute__((no_sanitize_memory));
 [[clang::no_sanitize_memory]] void should_not_crash_2();
 
 // CHECK: void should_not_crash_1() __attribute__((no_sanitize("memory")));
-// CHECK: void should_not_crash_2() {{\[\[}}clang::no_sanitize("memory"){{\]\]}};
+// CHECK: {{\[\[}}clang::no_sanitize("memory"){{\]\]}} void should_not_crash_2();
diff --git a/clang/test/AST/attr-print-emit.cpp b/clang/test/AST/attr-print-emit.cpp
@@ -73,3 +73,18 @@ class C {
   // CHECK: void pwtt(void *, int) __attribute__((pointer_with_type_tag(foo, 2, 3)));
   void pwtt(void *, int) __attribute__((pointer_with_type_tag(foo, 2, 3)));
 };
+
+#define ANNOTATE_ATTR __attribute__((annotate("Annotated")))
+ANNOTATE_ATTR int annotated_attr ANNOTATE_ATTR = 0;
+// CHECK: __attribute__((annotate("Annotated"))) int annotated_attr __attribute__((annotate("Annotated"))) = 0;
+
+// FIXME: We do not print the attribute as written after the type specifier.
+int ANNOTATE_ATTR annotated_attr_fixme = 0;
+// CHECK: __attribute__((annotate("Annotated"))) int annotated_attr_fixme = 0;
+
+#define NONNULL_ATTR  __attribute__((nonnull(1)))
+ANNOTATE_ATTR NONNULL_ATTR void fn_non_null_annotated_attr(int *) __attribute__((annotate("AnnotatedRHS")));
+// CHECK:__attribute__((annotate("Annotated"))) __attribute__((nonnull(1))) void fn_non_null_annotated_attr(int *) __attribute__((annotate("AnnotatedRHS")));
+
+[[gnu::nonnull(1)]] [[gnu::always_inline]] void cxx11_attr(int*) ANNOTATE_ATTR;
+// CHECK: {{\[\[}}gnu::nonnull(1)]] {{\[\[}}gnu::always_inline]] void cxx11_attr(int *) __attribute__((annotate("Annotated")));
diff --git a/clang/test/Analysis/scopes-cfg-output.cpp b/clang/test/Analysis/scopes-cfg-output.cpp
@@ -1469,7 +1469,7 @@ void test_cleanup_functions2(int m) {
 // CHECK:       [B1]
 // CHECK-NEXT:    1: CFGScopeBegin(f)
 // CHECK-NEXT:    2:  (CXXConstructExpr, [B1.3], F)
-// CHECK-NEXT:    3: __attribute__((cleanup(cleanup_F))) F f;
+// CHECK-NEXT:    3: F f __attribute__((cleanup(cleanup_F)));
 // CHECK-NEXT:    4: CleanupFunction (cleanup_F)
 // CHECK-NEXT:    5: [B1.3].~F() (Implicit destructor)
 // CHECK-NEXT:    6: CFGScopeEnd(f)

diff --git a/clang/test/C/C11/n1514.c b/clang/test/C/C11/n1514.c
@@ -0,0 +1,14 @@
+// RUN: %clang_cc1 -verify -std=c11 %s
+// expected-no-diagnostics
+
+/* WG14 N1514: Yes
+ * Conditional normative status for Annex G
+ */
+
+// We don't support Annex G (which introduces imaginary types), but support for
+// this annex is conditional in C11. So we can test for conformance to this
+// paper by ensuring we don't define the macro claiming we support Annex G.
+
+#ifdef __STDC_IEC_559_COMPLEX__
+#error "when did this happen??"
+#endif
diff --git a/clang/test/CodeGen/PowerPC/builtins-ppc-xlcompat-error.c b/clang/test/CodeGen/PowerPC/builtins-ppc-xlcompat-error.c
@@ -24,7 +24,6 @@ void test_trap(void) {
   __tw(ia, ib, 0); //expected-error {{argument value 0 is outside the valid range [1, 31]}}
 }
 
-#ifdef __PPC64__
 void test_builtin_ppc_rldimi() {
   unsigned int shift;
   unsigned long long mask;
@@ -33,7 +32,6 @@ void test_builtin_ppc_rldimi() {
   res = __builtin_ppc_rldimi(ull, ull, 63, 0xFFFF000000000F00);      // expected-error {{argument 3 value should represent a contiguous bit field}}
   res = __builtin_ppc_rldimi(ull, ull, 64, 0xFFFF000000000000);      // expected-error {{argument value 64 is outside the valid range [0, 63]}}
 }
-#endif
 
 void test_builtin_ppc_rlwimi() {
   unsigned int shift;
@@ -86,10 +84,6 @@ void testalignx(const void *pointer, unsigned int alignment) {
 }
 
 #ifndef __PPC64__
-unsigned long long testrldimi32() {
-  return __rldimi(ull, ui, 3, 0x7ffff8ULL); //expected-error {{this builtin is only available on 64-bit targets}}
-}
-
 long long testbpermd(long long bit_selector, long long source) {
   return __bpermd(bit_selector, source); //expected-error {{this builtin is only available on 64-bit targets}}
 }

diff --git a/clang/test/CodeGen/ubsan-bitfield-conversion.c b/clang/test/CodeGen/ubsan-bitfield-conversion.c
@@ -17,7 +17,7 @@ void foo1(int x) {
   // CHECK-NEXT: [[BFRESULTASHR:%.*]] = ashr i8 [[BFRESULTSHL]], 5
   // CHECK-NEXT: [[BFRESULTCAST:%.*]] = sext i8 [[BFRESULTASHR]] to i32
   // CHECK-BITFIELD-CONVERSION: call void @__ubsan_handle_implicit_conversion
-  // CHECK-BITFIELD-CONVERSION-NEXT: br label %[[CONT:.*]], !nosanitize !6
+  // CHECK-BITFIELD-CONVERSION-NEXT: br label %[[CONT:.*]], !nosanitize
   // CHECK-BITFIELD-CONVERSION: [[CONT]]:
   // CHECK-NEXT: ret void
 }
@@ -29,7 +29,7 @@ void foo2(int x) {
   // CHECK-NEXT: [[BFRESULTSHL:%.*]] = shl i8 {{.*}}, 6
   // CHECK-NEXT: [[BFRESULTASHR:%.*]] = ashr i8 [[BFRESULTSHL]], 6
   // CHECK-BITFIELD-CONVERSION: call void @__ubsan_handle_implicit_conversion
-  // CHECK-BITFIELD-CONVERSION-NEXT: br label %[[CONT:.*]], !nosanitize !6
+  // CHECK-BITFIELD-CONVERSION-NEXT: br label %[[CONT:.*]], !nosanitize
   // CHECK-BITFIELD-CONVERSION: [[CONT]]:
   // CHECK-NEXT: ret void
 }
@@ -42,7 +42,7 @@ void foo3() {
   // CHECK-NEXT: [[BFRESULTASHR:%.*]] = ashr i8 [[BFRESULTSHL]], 5
   // CHECK-NEXT: [[BFRESULTCAST:%.*]] = sext i8 [[BFRESULTASHR]] to i32
   // CHECK-BITFIELD-CONVERSION: call void @__ubsan_handle_implicit_conversion
-  // CHECK-BITFIELD-CONVERSION-NEXT: br label %[[CONT:.*]], !nosanitize !6
+  // CHECK-BITFIELD-CONVERSION-NEXT: br label %[[CONT:.*]], !nosanitize
   // CHECK-BITFIELD-CONVERSION: [[CONT]]:
   // CHECK-NEXT: ret void
 }
@@ -55,7 +55,7 @@ void foo4(int x) {
   // CHECK-NEXT: [[BFRESULTASHR:%.*]] = ashr i8 [[BFRESULTSHL]], 5
   // CHECK-NEXT: [[BFRESULTCAST:%.*]] = sext i8 [[BFRESULTASHR]] to i32
   // CHECK-BITFIELD-CONVERSION: call void @__ubsan_handle_implicit_conversion
-  // CHECK-BITFIELD-CONVERSION-NEXT: br label %[[CONT:.*]], !nosanitize !6
+  // CHECK-BITFIELD-CONVERSION-NEXT: br label %[[CONT:.*]], !nosanitize
   // CHECK-BITFIELD-CONVERSION: [[CONT]]:
   // CHECK-NEXT: ret void
 }
diff --git a/clang/test/CodeGenCXX/cxx2b-deducing-this.cpp b/clang/test/CodeGenCXX/cxx2b-deducing-this.cpp
@@ -109,3 +109,76 @@ void test_temporary() {
 //CHECK:    %ref.tmp = alloca %struct.MaterializedTemporary, align 1
 //CHECK:    call void @_ZN21MaterializedTemporaryC1Ev(ptr noundef nonnull align 1 dereferenceable(1) %ref.tmp){{.*}}
 //CHECK     invoke void @_ZNH21MaterializedTemporary3fooEOS_(ptr noundef nonnull align 1 dereferenceable(1) %ref.tmp){{.*}}
+
+namespace GH86399 {
+volatile int a = 0;
+struct function {
+  function& operator=(function const&) {
+    a = 1;
+    return *this;
+  }
+};
+
+void f() {
+  function list;
+
+  //CHECK-LABEL: define internal void @"_ZZN7GH863991f{{.*}}"(ptr %{{.*}})
+  //CHECK: call {{.*}} @_ZN7GH863998functionaSERKS0_
+  //CHECK-NEXT: ret void
+  [&list](this auto self) {
+    list = function{};
+  }();
+}
+}
+
+namespace GH84163 {
+// Just check that this doesn't crash (we were previously not instantiating
+// everything that needs instantiating in here).
+template <typename> struct S {};
+
+void a() {
+  int x;
+  const auto l = [&x](this auto&) { S<decltype(x)> q; };
+  l();
+}
+}
+
+namespace GH84425 {
+// As above.
+void do_thing(int x) {
+    auto second = [&](this auto const& self, int b) -> int {
+        if (x) return x;
+        else return self(x);
+    };
+
+     second(1);
+}
+
+void do_thing2(int x) {
+    auto second = [&](this auto const& self)  {
+        if (true) return x;
+        else return x;
+    };
+
+     second();
+}
+}
+
+namespace GH79754 {
+// As above.
+void f() {
+  int x;
+  [&x](this auto&&) {return x;}();
+}
+}
+
+namespace GH70604 {
+auto dothing(int num)
+{
+  auto fun =  [&num](this auto&& self) -> void {
+    auto copy = num;
+  };
+
+  fun();
+}
+}
diff --git a/clang/test/CodeGenCXX/ubsan-bitfield-conversion.cpp b/clang/test/CodeGenCXX/ubsan-bitfield-conversion.cpp
@@ -23,14 +23,14 @@ void foo1(int x) {
   // CHECK-BITFIELD-CONVERSION-NEXT: [[BFRESULTASHR:%.*]] = ashr i8 [[BFRESULTSHL]], 5
   // CHECK-BITFIELD-CONVERSION-NEXT: [[BFRESULTCAST:%.*]] = sext i8 [[BFRESULTASHR]] to i32
   // CHECK-BITFIELD-CONVERSION: call void @__ubsan_handle_implicit_conversion
-  // CHECK-BITFIELD-CONVERSION-NEXT: br label %[[CONT:.*]], !nosanitize !6
+  // CHECK-BITFIELD-CONVERSION-NEXT: br label %[[CONT:.*]], !nosanitize
   c.a = x;
   // CHECK: store i8 %{{.*}}
   // CHECK-BITFIELD-CONVERSION: [[BFRESULTSHL:%.*]] = shl i8 {{.*}}, 5
   // CHECK-BITFIELD-CONVERSION-NEXT: [[BFRESULTASHR:%.*]] = ashr i8 [[BFRESULTSHL]], 5
   // CHECK-BITFIELD-CONVERSION-NEXT: [[BFRESULTCAST:%.*]] = sext i8 [[BFRESULTASHR]] to i32
   // CHECK-BITFIELD-CONVERSION: call void @__ubsan_handle_implicit_conversion
-  // CHECK-BITFIELD-CONVERSION-NEXT: br label %[[CONT:.*]], !nosanitize !6
+  // CHECK-BITFIELD-CONVERSION-NEXT: br label %[[CONT:.*]], !nosanitize
   // CHECK-BITFIELD-CONVERSION: [[CONT]]:
   // CHECK-NEXT: ret void
 }
@@ -42,13 +42,13 @@ void foo2(int x) {
   // CHECK-BITFIELD-CONVERSION: [[BFRESULTSHL:%.*]] = shl i8 {{.*}}, 6
   // CHECK-BITFIELD-CONVERSION-NEXT: [[BFRESULTASHR:%.*]] = ashr i8 [[BFRESULTSHL]], 6
   // CHECK-BITFIELD-CONVERSION: call void @__ubsan_handle_implicit_conversion
-  // CHECK-BITFIELD-CONVERSION-NEXT: br label %[[CONT:.*]], !nosanitize !6
+  // CHECK-BITFIELD-CONVERSION-NEXT: br label %[[CONT:.*]], !nosanitize
   c.b = x;
   // CHECK: store i8 %{{.*}}
   // CHECK-BITFIELD-CONVERSION: [[BFRESULTSHL:%.*]] = shl i8 {{.*}}, 6
   // CHECK-BITFIELD-CONVERSION-NEXT: [[BFRESULTASHR:%.*]] = ashr i8 [[BFRESULTSHL]], 6
   // CHECK-BITFIELD-CONVERSION: call void @__ubsan_handle_implicit_conversion
-  // CHECK-BITFIELD-CONVERSION-NEXT: br label %[[CONT:.*]], !nosanitize !6
+  // CHECK-BITFIELD-CONVERSION-NEXT: br label %[[CONT:.*]], !nosanitize
   // CHECK-BITFIELD-CONVERSION: [[CONT]]:
   // CHECK-NEXT: ret void
 }
@@ -61,14 +61,14 @@ void foo3() {
   // CHECK-NEXT: [[BFRESULTASHR:%.*]] = ashr i8 [[BFRESULTSHL]], 5
   // CHECK-NEXT: [[BFRESULTCAST:%.*]] = sext i8 [[BFRESULTASHR]] to i32
   // CHECK-BITFIELD-CONVERSION: call void @__ubsan_handle_implicit_conversion
-  // CHECK-BITFIELD-CONVERSION-NEXT: br label %[[CONT:.*]], !nosanitize !6
+  // CHECK-BITFIELD-CONVERSION-NEXT: br label %[[CONT:.*]], !nosanitize
   c.a++;
   // CHECK: store i8 %{{.*}}
   // CHECK-NEXT: [[BFRESULTSHL:%.*]] = shl i8 {{.*}}, 5
   // CHECK-NEXT: [[BFRESULTASHR:%.*]] = ashr i8 [[BFRESULTSHL]], 5
   // CHECK-NEXT: [[BFRESULTCAST:%.*]] = sext i8 [[BFRESULTASHR]] to i32
   // CHECK-BITFIELD-CONVERSION: call void @__ubsan_handle_implicit_conversion
-  // CHECK-BITFIELD-CONVERSION-NEXT: br label %[[CONT:.*]], !nosanitize !6
+  // CHECK-BITFIELD-CONVERSION-NEXT: br label %[[CONT:.*]], !nosanitize
   // CHECK-BITFIELD-CONVERSION: [[CONT]]:
   // CHECK-NEXT: ret void
 }
@@ -81,14 +81,14 @@ void foo4(int x) {
   // CHECK-NEXT: [[BFRESULTASHR:%.*]] = ashr i8 [[BFRESULTSHL]], 5
   // CHECK-NEXT: [[BFRESULTCAST:%.*]] = sext i8 [[BFRESULTASHR]] to i32
   // CHECK-BITFIELD-CONVERSION: call void @__ubsan_handle_implicit_conversion
-  // CHECK-BITFIELD-CONVERSION-NEXT: br label %[[CONT:.*]], !nosanitize !6
+  // CHECK-BITFIELD-CONVERSION-NEXT: br label %[[CONT:.*]], !nosanitize
   c.a += x;
   // CHECK: store i8 %{{.*}}
   // CHECK-NEXT: [[BFRESULTSHL:%.*]] = shl i8 {{.*}}, 5
   // CHECK-NEXT: [[BFRESULTASHR:%.*]] = ashr i8 [[BFRESULTSHL]], 5
   // CHECK-NEXT: [[BFRESULTCAST:%.*]] = sext i8 [[BFRESULTASHR]] to i32
   // CHECK-BITFIELD-CONVERSION: call void @__ubsan_handle_implicit_conversion
-  // CHECK-BITFIELD-CONVERSION-NEXT: br label %[[CONT:.*]], !nosanitize !6
+  // CHECK-BITFIELD-CONVERSION-NEXT: br label %[[CONT:.*]], !nosanitize
   // CHECK-BITFIELD-CONVERSION: [[CONT]]:
   // CHECK-NEXT: ret void
 }
diff --git a/clang/test/Driver/cuda-external-tools.cu b/clang/test/Driver/cuda-external-tools.cu
@@ -89,7 +89,7 @@
 // Check -Xcuda-ptxas with clang-cl
 // RUN: %clang_cl -### -c -Xcuda-ptxas -foo1 \
 // RUN:   --offload-arch=sm_35 --cuda-path=%S/Inputs/CUDA/usr/local/cuda \
-// RUN:   -Xcuda-ptxas -foo2 %s 2>&1 \
+// RUN:   -Xcuda-ptxas -foo2 -- %s 2>&1 \
 // RUN: | FileCheck -check-prefixes=CHECK,SM35,PTXAS-EXTRA %s
 
 // MacOS spot-checks

diff --git a/clang/test/Lexer/cxx-features.cpp b/clang/test/Lexer/cxx-features.cpp
@@ -85,7 +85,7 @@
 #error "wrong value for __cpp_char8_t"
 #endif
 
-#if check(concepts, 0, 0, 0, 0, 201907, 201907, 201907)
+#if check(concepts, 0, 0, 0, 0, 202002, 202002, 202002)
 #error "wrong value for __cpp_concepts"
 #endif
 

diff --git a/clang/test/Misc/warning-flags.c b/clang/test/Misc/warning-flags.c
@@ -18,7 +18,7 @@ This test serves two purposes:
 
 The list of warnings below should NEVER grow.  It should gradually shrink to 0.
 
-CHECK: Warnings without flags (67):
+CHECK: Warnings without flags (66):
 
 CHECK-NEXT:   ext_expected_semi_decl_list
 CHECK-NEXT:   ext_explicit_specialization_storage_class
@@ -80,7 +80,6 @@ CHECK-NEXT:   warn_register_objc_catch_parm
 CHECK-NEXT:   warn_related_result_type_compatibility_class
 CHECK-NEXT:   warn_related_result_type_compatibility_protocol
 CHECK-NEXT:   warn_template_export_unsupported
-CHECK-NEXT:   warn_tentative_incomplete_array
 CHECK-NEXT:   warn_typecheck_function_qualifiers
 CHECK-NEXT:   warn_undef_interface
 CHECK-NEXT:   warn_undef_interface_suggest

diff --git a/clang/test/OpenMP/assumes_codegen.cpp b/clang/test/OpenMP/assumes_codegen.cpp
@@ -67,7 +67,7 @@ int lambda_outer() {
 }
 #pragma omp end assumes
 
-// AST:      __attribute__((assume("omp_no_openmp_routines,ompx_another_warning,ompx_after_invalid_clauses"))) __attribute__((assume("omp_no_openmp"))) void foo() {
+// AST:      void foo() __attribute__((assume("omp_no_openmp_routines,ompx_another_warning,ompx_after_invalid_clauses"))) __attribute__((assume("omp_no_openmp"))) {
 // AST-NEXT: }
 // AST-NEXT: class BAR {
 // AST-NEXT: public:
@@ -81,7 +81,7 @@ int lambda_outer() {
 // AST-NEXT:  __attribute__((assume("ompx_range_bar_only"))) __attribute__((assume("ompx_range_bar_only_2"))) __attribute__((assume("omp_no_openmp_routines,ompx_another_warning,ompx_after_invalid_clauses"))) __attribute__((assume("omp_no_openmp"))) void bar() {
 // AST-NEXT:     BAR b;
 // AST-NEXT: }
-// AST-NEXT: void baz() __attribute__((assume("ompx_1234"))) __attribute__((assume("omp_no_openmp_routines,ompx_another_warning,ompx_after_invalid_clauses"))) __attribute__((assume("omp_no_openmp")));
+// AST-NEXT: __attribute__((assume("ompx_1234"))) __attribute__((assume("omp_no_openmp_routines,ompx_another_warning,ompx_after_invalid_clauses"))) __attribute__((assume("omp_no_openmp"))) void baz();
 // AST-NEXT: template <typename T> class BAZ {
 // AST-NEXT: public:
 // AST-NEXT:     __attribute__((assume("ompx_1234"))) __attribute__((assume("omp_no_openmp_routines,ompx_another_warning,ompx_after_invalid_clauses"))) __attribute__((assume("omp_no_openmp"))) BAZ<T>()      {
@@ -95,8 +95,8 @@ int lambda_outer() {
 // AST-NEXT: public:
 // AST-NEXT:     __attribute__((assume("ompx_1234"))) __attribute__((assume("omp_no_openmp_routines,ompx_another_warning,ompx_after_invalid_clauses"))) __attribute__((assume("omp_no_openmp"))) __attribute__((assume("omp_no_openmp_routines,ompx_another_warning,ompx_after_invalid_clauses"))) __attribute__((assume("omp_no_openmp")))  BAZ()    {
 // AST-NEXT:     }
-// AST-NEXT:     void baz1() __attribute__((assume("ompx_1234"))) __attribute__((assume("omp_no_openmp_routines,ompx_another_warning,ompx_after_invalid_clauses"))) __attribute__((assume("omp_no_openmp"))) __attribute__((assume("omp_no_openmp_routines,ompx_another_warning,ompx_after_invalid_clauses"))) __attribute__((assume("omp_no_openmp")));
-// AST-NEXT:     static void baz2() __attribute__((assume("ompx_1234"))) __attribute__((assume("omp_no_openmp_routines,ompx_another_warning,ompx_after_invalid_clauses"))) __attribute__((assume("omp_no_openmp"))) __attribute__((assume("omp_no_openmp_routines,ompx_another_warning,ompx_after_invalid_clauses"))) __attribute__((assume("omp_no_openmp")));
+// AST-NEXT:     __attribute__((assume("ompx_1234"))) __attribute__((assume("omp_no_openmp_routines,ompx_another_warning,ompx_after_invalid_clauses"))) __attribute__((assume("omp_no_openmp"))) __attribute__((assume("omp_no_openmp_routines,ompx_another_warning,ompx_after_invalid_clauses"))) __attribute__((assume("omp_no_openmp"))) void baz1();
+// AST-NEXT:     __attribute__((assume("ompx_1234"))) __attribute__((assume("omp_no_openmp_routines,ompx_another_warning,ompx_after_invalid_clauses"))) __attribute__((assume("omp_no_openmp"))) __attribute__((assume("omp_no_openmp_routines,ompx_another_warning,ompx_after_invalid_clauses"))) __attribute__((assume("omp_no_openmp"))) static void baz2();
 // AST-NEXT: };
 // AST-NEXT: __attribute__((assume("ompx_1234"))) __attribute__((assume("omp_no_openmp_routines,ompx_another_warning,ompx_after_invalid_clauses"))) __attribute__((assume("omp_no_openmp"))) void baz() {
 // AST-NEXT:     BAZ<float> b;

diff --git a/clang/test/OpenMP/assumes_print.cpp b/clang/test/OpenMP/assumes_print.cpp
@@ -37,7 +37,7 @@ void baz() {
 }
 #pragma omp end assumes
 
-// CHECK: __attribute__((assume("omp_no_openmp_routines"))) __attribute__((assume("omp_no_openmp"))) void foo()
+// CHECK: void foo() __attribute__((assume("omp_no_openmp_routines"))) __attribute__((assume("omp_no_openmp")))
 // CHECK: __attribute__((assume("ompx_range_bar_only"))) __attribute__((assume("ompx_range_bar_only_2"))) __attribute__((assume("omp_no_openmp_routines"))) __attribute__((assume("omp_no_openmp"))) void bar()
 // CHECK: __attribute__((assume("ompx_1234"))) __attribute__((assume("omp_no_openmp_routines"))) __attribute__((assume("omp_no_openmp"))) void baz()
 

diff --git a/clang/test/OpenMP/assumes_template_print.cpp b/clang/test/OpenMP/assumes_template_print.cpp
@@ -17,23 +17,23 @@ template <typename T>
 struct S {
   int a;
 // CHECK: template <typename T> struct S {
-// CHECK:     __attribute__((assume("ompx_global_assumption"))) void foo()     {
+// CHECK:     void foo() __attribute__((assume("ompx_global_assumption")))     {
   void foo() {
     #pragma omp parallel
     {}
   }
 };
 
 // CHECK: template<> struct S<int> {
-// CHECK:     __attribute__((assume("ompx_global_assumption"))) void foo()     {
+// CHECK:     void foo() __attribute__((assume("ompx_global_assumption")))     {
 
 #pragma omp begin assumes no_openmp
-// CHECK: __attribute__((assume("omp_no_openmp"))) __attribute__((assume("ompx_global_assumption"))) void S_with_assumes_no_call() {
+// CHECK: __attribute__((assume("omp_no_openmp"))) void S_with_assumes_no_call() __attribute__((assume("ompx_global_assumption"))) {
 void S_with_assumes_no_call() {
   S<int> s;
   s.a = 0;
 }
-// CHECK: __attribute__((assume("omp_no_openmp"))) __attribute__((assume("ompx_global_assumption"))) void S_with_assumes_call() {
+// CHECK: __attribute__((assume("omp_no_openmp"))) void S_with_assumes_call() __attribute__((assume("ompx_global_assumption"))) {
 void S_with_assumes_call() {
   S<int> s;
   s.a = 0;
@@ -42,7 +42,7 @@ void S_with_assumes_call() {
 }
 #pragma omp end assumes
 
-// CHECK: __attribute__((assume("ompx_global_assumption"))) void S_without_assumes() {
+// CHECK: void S_without_assumes() __attribute__((assume("ompx_global_assumption"))) {
 void S_without_assumes() {
   S<int> s;
   s.foo();

diff --git a/clang/test/OpenMP/declare_simd_ast_print.cpp b/clang/test/OpenMP/declare_simd_ast_print.cpp
@@ -60,11 +60,11 @@ void h(int *hp, int *hp2, int *hq, int *lin)
 
 class VV {
   // CHECK: #pragma omp declare simd uniform(this, a) linear(val(b): a)
-  // CHECK-NEXT:  __attribute__((cold)) int add(int a, int b)     {
+  // CHECK-NEXT: int add(int a, int b) __attribute__((cold))    {
   // CHECK-NEXT: return a + b;
   // CHECK-NEXT: }
   #pragma omp declare simd uniform(this, a) linear(val(b): a)
-  __attribute__((cold)) int add(int a, int b) { return a + b; }
+  int add(int a, int b) __attribute__((cold)) { return a + b; }
 
   // CHECK: #pragma omp declare simd aligned(b: 4) aligned(a) linear(ref(b): 4) linear(val(this)) linear(val(a))
   // CHECK-NEXT: float taddpf(float *a, float *&b)     {

diff --git a/clang/test/PCH/cxx23-deducing-this-lambda.cpp b/clang/test/PCH/cxx23-deducing-this-lambda.cpp
@@ -0,0 +1,35 @@
+// RUN: %clang_cc1 -emit-pch -std=c++23 -o %t %s
+// RUN: %clang_cc1 -include-pch %t -verify -fsyntax-only -DTEST -std=c++23 %s
+
+// Test that dependence of 'this' and DREs due to by-value capture by a
+// lambda with an explicit object parameter is serialised/deserialised
+// properly.
+
+#ifndef HEADER
+#define HEADER
+struct S {
+  int x;
+  auto f() {
+    return [*this] (this auto&&) {
+      int y;
+      x = 42;
+
+      const auto l = [y] (this auto&&) { y = 42; };
+      l();
+    };
+  }
+};
+#endif
+
+// expected-error@* {{read-only variable is not assignable}}
+// expected-error@* {{cannot assign to a variable captured by copy in a non-mutable lambda}}
+// expected-note@* 2 {{in instantiation of}}
+
+#ifdef TEST
+void f() {
+  const auto l = S{}.f();
+  l(); // expected-note {{in instantiation of}}
+}
+#endif
+
+
diff --git a/clang/test/Sema/tentative-array-decl.c b/clang/test/Sema/tentative-array-decl.c
@@ -0,0 +1,5 @@
+// RUN: %clang_cc1 -verify %s
+// RUN: %clang_cc1 -verify=good -Wno-tentative-definition-array %s
+// good-no-diagnostics
+
+int foo[]; // expected-warning {{tentative array definition assumed to have one element}}
diff --git a/clang/test/SemaCXX/attr-no-sanitize.cpp b/clang/test/SemaCXX/attr-no-sanitize.cpp
@@ -16,12 +16,12 @@ int f3() __attribute__((no_sanitize("address")));
 
 // DUMP-LABEL: FunctionDecl {{.*}} f4
 // DUMP: NoSanitizeAttr {{.*}} thread
-// PRINT: int f4() {{\[\[}}clang::no_sanitize("thread")]]
+// PRINT: {{\[\[}}clang::no_sanitize("thread")]] int f4()
 [[clang::no_sanitize("thread")]] int f4();
 
 // DUMP-LABEL: FunctionDecl {{.*}} f4
 // DUMP: NoSanitizeAttr {{.*}} hwaddress
-// PRINT: int f4() {{\[\[}}clang::no_sanitize("hwaddress")]]
+// PRINT: {{\[\[}}clang::no_sanitize("hwaddress")]] int f4()
 [[clang::no_sanitize("hwaddress")]] int f4();
 
 // DUMP-LABEL: FunctionDecl {{.*}} f5
@@ -36,5 +36,5 @@ int f6() __attribute__((no_sanitize("unknown"))); // expected-warning{{unknown s
 
 // DUMP-LABEL: FunctionDecl {{.*}} f7
 // DUMP: NoSanitizeAttr {{.*}} memtag
-// PRINT: int f7() {{\[\[}}clang::no_sanitize("memtag")]]
+// PRINT: {{\[\[}}clang::no_sanitize("memtag")]] int f7()
 [[clang::no_sanitize("memtag")]] int f7();
diff --git a/clang/test/SemaCXX/cxx11-attr-print.cpp b/clang/test/SemaCXX/cxx11-attr-print.cpp
@@ -24,10 +24,10 @@ int d [[deprecated("warning")]];
 // CHECK: __attribute__((deprecated("warning", "fixit")));
 int e __attribute__((deprecated("warning", "fixit")));
 
-// CHECK: int cxx11_alignas alignas(4);
+// CHECK: alignas(4) int cxx11_alignas;
 alignas(4) int cxx11_alignas;
 
-// CHECK: int c11_alignas _Alignas(int);
+// CHECK: _Alignas(int) int c11_alignas;
 _Alignas(int) int c11_alignas;
 
 // CHECK: int foo() __attribute__((const));
@@ -66,7 +66,7 @@ void f8 (void *, const char *, ...) __attribute__ ((format (printf, 2, 3)));
 // CHECK: int n alignas(4
 // CHECK: int p alignas(int
 // CHECK: __attribute__((pure)) static int f()
-// CHECK: static int g() {{\[}}[gnu::pure]]
+// CHECK: {{\[}}[gnu::pure]] static int g()
 template <typename T> struct S {
   __attribute__((aligned(4))) int m;
   alignas(4) int n;
@@ -82,7 +82,7 @@ template <typename T> struct S {
 // CHECK: int m __attribute__((aligned(4
 // CHECK: int n alignas(4
 // CHECK: __attribute__((pure)) static int f()
-// CHECK: static int g() {{\[}}[gnu::pure]]
+// CHECK: {{\[}}[gnu::pure]] static int g()
 template struct S<int>;
 
 // CHECK: using Small2 {{\[}}[gnu::mode(byte)]] = int;

diff --git a/clang/test/SemaCXX/cxx2b-deducing-this.cpp b/clang/test/SemaCXX/cxx2b-deducing-this.cpp
@@ -200,6 +200,118 @@ void TestMutationInLambda() {
     [i = 0](this auto){ i++; }();
     [i = 0](this const auto&){ i++; }();
     // expected-error@-1 {{cannot assign to a variable captured by copy in a non-mutable lambda}}
+    // expected-note@-2 {{in instantiation of}}
+
+    int x;
+    const auto l1 = [x](this auto&) { x = 42; }; // expected-error {{cannot assign to a variable captured by copy in a non-mutable lambda}}
+    const auto l2 = [=](this auto&) { x = 42; }; // expected-error {{cannot assign to a variable captured by copy in a non-mutable lambda}}
+
+    const auto l3 = [&x](this auto&) {
+        const auto l3a = [x](this auto&) { x = 42; }; // expected-error {{cannot assign to a variable captured by copy in a non-mutable lambda}}
+        l3a(); // expected-note {{in instantiation of}}
+    };
+
+    const auto l4 = [&x](this auto&) {
+        const auto l4a = [=](this auto&) { x = 42; }; // expected-error {{cannot assign to a variable captured by copy in a non-mutable lambda}}
+        l4a(); // expected-note {{in instantiation of}}
+    };
+
+    const auto l5 = [x](this auto&) {
+        const auto l5a = [x](this auto&) { x = 42; }; // expected-error {{cannot assign to a variable captured by copy in a non-mutable lambda}}
+        l5a(); // expected-note {{in instantiation of}}
+    };
+
+    const auto l6 = [=](this auto&) {
+        const auto l6a = [=](this auto&) { x = 42; }; // expected-error {{cannot assign to a variable captured by copy in a non-mutable lambda}}
+        l6a(); // expected-note {{in instantiation of}}
+    };
+
+    const auto l7 = [x](this auto&) {
+        const auto l7a = [=](this auto&) { x = 42; }; // expected-error {{cannot assign to a variable captured by copy in a non-mutable lambda}}
+        l7a(); // expected-note {{in instantiation of}}
+    };
+
+    const auto l8 = [=](this auto&) {
+        const auto l8a = [x](this auto&) { x = 42; }; // expected-error {{cannot assign to a variable captured by copy in a non-mutable lambda}}
+        l8a(); // expected-note {{in instantiation of}}
+    };
+
+    const auto l9 = [&](this auto&) {
+        const auto l9a = [x](this auto&) { x = 42; }; // expected-error {{cannot assign to a variable captured by copy in a non-mutable lambda}}
+        l9a(); // expected-note {{in instantiation of}}
+    };
+
+    const auto l10 = [&](this auto&) {
+        const auto l10a = [=](this auto&) { x = 42; }; // expected-error {{cannot assign to a variable captured by copy in a non-mutable lambda}}
+        l10a(); // expected-note {{in instantiation of}}
+    };
+
+    const auto l11 = [x](this auto&) {
+        const auto l11a = [&x](this auto&) { x = 42; }; // expected-error {{cannot assign to a variable captured by copy in a non-mutable lambda}} expected-note {{while substituting}}
+        l11a();
+    };
+
+    const auto l12 = [x](this auto&) {
+        const auto l12a = [&](this auto&) { x = 42; }; // expected-error {{cannot assign to a variable captured by copy in a non-mutable lambda}} expected-note {{while substituting}}
+        l12a();
+    };
+
+    const auto l13 = [=](this auto&) {
+        const auto l13a = [&x](this auto&) { x = 42; }; // expected-error {{cannot assign to a variable captured by copy in a non-mutable lambda}} expected-note {{while substituting}}
+        l13a();
+    };
+
+    struct S {
+        int x;
+        auto f() {
+            return [*this] (this auto&&) {
+                x = 42; // expected-error {{read-only variable is not assignable}}
+                [*this] () mutable { x = 42; } ();
+                [*this] (this auto&&) { x = 42; } ();
+                [*this] () { x = 42; } (); // expected-error {{read-only variable is not assignable}}
+                const auto l = [*this] (this auto&&) { x = 42; }; // expected-error {{read-only variable is not assignable}}
+                l(); // expected-note {{in instantiation of}}
+
+                struct T {
+                    int x;
+                    auto g() {
+                        return [&] (this auto&&) {
+                            x = 42;
+                            const auto l = [*this] (this auto&&) { x = 42; }; // expected-error {{read-only variable is not assignable}}
+                            l(); // expected-note {{in instantiation of}}
+                        };
+                    }
+                };
+
+                const auto l2 = T{}.g();
+                l2(); // expected-note {{in instantiation of}}
+            };
+        }
+    };
+
+    const auto l14 = S{}.f();
+
+    l1(); // expected-note {{in instantiation of}}
+    l2(); // expected-note {{in instantiation of}}
+    l3(); // expected-note {{in instantiation of}}
+    l4(); // expected-note {{in instantiation of}}
+    l5(); // expected-note {{in instantiation of}}
+    l6(); // expected-note {{in instantiation of}}
+    l7(); // expected-note {{in instantiation of}}
+    l8(); // expected-note {{in instantiation of}}
+    l9(); // expected-note {{in instantiation of}}
+    l10(); // expected-note {{in instantiation of}}
+    l11(); // expected-note {{in instantiation of}}
+    l12(); // expected-note {{in instantiation of}}
+    l13(); // expected-note {{in instantiation of}}
+    l14(); // expected-note 3 {{in instantiation of}}
+
+    {
+      const auto l1 = [&x](this auto&) { x = 42; };
+      const auto l2 = [&](this auto&) { x = 42; };
+      l1();
+      l2();
+    }
 }
 
 struct Over_Call_Func_Example {
@@ -650,3 +762,67 @@ int bug() {
   S{}.f(0);
 }
 }
+
+namespace GH84163 {
+struct S {
+  int x;
+
+  auto foo() {
+    return [*this](this auto&&) {
+      x = 10; // expected-error {{read-only variable is not assignable}}
+    };
+  }
+};
+
+int f() {
+  S s{ 5 };
+  const auto l = s.foo();
+  l(); // expected-note {{in instantiation of}}
+
+  const auto g = [x = 10](this auto&& self) { x = 20; }; // expected-error {{cannot assign to a variable captured by copy in a non-mutable lambda}}
+  g(); // expected-note {{in instantiation of}}
+}
+}
+
+namespace GH86054 {
+template<typename M>
+struct unique_lock {
+  unique_lock(M&) {}
+};
+int f() {
+  struct mutex {} cursor_guard;
+  [&cursor_guard](this auto self) {
+    unique_lock a(cursor_guard);
+  }();
+}
+}
+
+namespace GH86398 {
+struct function {}; // expected-note 2 {{not viable}}
+int f() {
+  function list;
+  [&list](this auto self) {
+    list = self; // expected-error {{no viable overloaded '='}}
+  }(); // expected-note {{in instantiation of}}
+}
+
+struct function2 {
+  function2& operator=(function2 const&) = delete; // expected-note {{candidate function not viable}}
+};
+int g() {
+  function2 list;
+  [&list](this auto self) {
+    list = self; // expected-error {{no viable overloaded '='}}
+  }(); // expected-note {{in instantiation of}}
+}
+
+struct function3 {
+  function3& operator=(function3 const&) = delete; // expected-note {{has been explicitly deleted}}
+};
+int h() {
+  function3 list;
+  [&list](this auto self) {
+    list = function3{}; // expected-error {{selected deleted operator '='}}
+  }();
+}
+}
diff --git a/clang/test/SemaTemplate/instantiate-pure-virtual-function.cpp b/clang/test/SemaTemplate/instantiate-pure-virtual-function.cpp
@@ -0,0 +1,67 @@
+// RUN: %clang_cc1 -fsyntax-only -verify -Wundefined-func-template %s
+
+namespace GH74016 {
+  template <typename T> class B {
+  public:
+    constexpr void foo(const T &) { bar(1); }
+    virtual constexpr void bar(unsigned int) = 0;
+  };
+
+  template <typename T> class D : public B<T> {
+  public:
+    constexpr void bar(unsigned int) override {}
+  };
+
+  void test() {
+    auto t = D<int>();
+    t.foo(0);
+  }
+};
+
+namespace call_pure_virtual_function_from_virtual {
+  template <typename T> class B {
+  public:
+    const void foo(const T &) { B::bar(1); } // expected-warning {{instantiation of function 'call_pure_virtual_function_from_virtual::B<int>::bar' required here, but no definition is available}}
+    // expected-note@-1 {{add an explicit instantiation declaration to suppress this warning if 'call_pure_virtual_function_from_virtual::B<int>::bar' is explicitly instantiated in another translation unit}}
+    virtual const void bar(unsigned int) = 0; // expected-note {{forward declaration of template entity is here}}
+  };
+
+  template <typename T> class D : public B<T> {
+  public:
+    const void bar(unsigned int) override {}
+  };
+
+  void test() {
+    auto t = D<int>();
+    t.foo(0); // expected-note {{in instantiation of member function 'call_pure_virtual_function_from_virtual::B<int>::foo' requested here}}
+  }
+};
+
+namespace non_pure_virtual_function {
+  template <typename T> class B {
+  public:
+    constexpr void foo(const T &) { bar(1); }
+
+    virtual constexpr void bar(unsigned int); // expected-warning {{inline function 'non_pure_virtual_function::B<int>::bar' is not defined}}
+    // expected-note@-1 {{forward declaration of template entity is here}}
+    // expected-note@-2 {{forward declaration of template entity is here}}
+    // expected-note@-3 {{forward declaration of template entity is here}}
+  };
+
+  template <typename T> class D : public B<T> { // expected-warning {{instantiation of function 'non_pure_virtual_function::B<int>::bar' required here, but no definition is available}}
+// expected-warning@-1 {{instantiation of function 'non_pure_virtual_function::B<int>::bar' required here, but no definition is available}}
+// expected-warning@-2 {{instantiation of function 'non_pure_virtual_function::B<int>::bar' required here, but no definition is available}}
+// expected-note@-3 {{add an explicit instantiation declaration to suppress this warning if 'non_pure_virtual_function::B<int>::bar' is explicitly instantiated in another translation unit}}
+// expected-note@-4 {{add an explicit instantiation declaration to suppress this warning if 'non_pure_virtual_function::B<int>::bar' is explicitly instantiated in another translation unit}}
+// expected-note@-5 {{add an explicit instantiation declaration to suppress this warning if 'non_pure_virtual_function::B<int>::bar' is explicitly instantiated in another translation unit}}
+// expected-note@-6 {{used here}}
+
+  public:
+    constexpr void bar(unsigned int) override { }
+  };
+
+  void test() {
+    auto t = D<int>();
+    t.foo(0);
+  }
+};
diff --git a/clang/test/SemaTemplate/ms-function-specialization-class-scope.cpp b/clang/test/SemaTemplate/ms-function-specialization-class-scope.cpp
@@ -1,7 +1,6 @@
-// RUN: %clang_cc1 -fms-extensions -fsyntax-only -verify %s
-// RUN: %clang_cc1 -fms-extensions -fdelayed-template-parsing -fsyntax-only -verify %s
+// RUN: %clang_cc1 -fms-extensions -fsyntax-only -Wno-unused-value -verify %s
+// RUN: %clang_cc1 -fms-extensions -fdelayed-template-parsing -fsyntax-only -Wno-unused-value -verify %s
 
-// expected-no-diagnostics
 class A {
 public:
   template<class U> A(U p) {}
@@ -76,3 +75,42 @@ struct S {
   int f<0>(int);
 };
 }
+
+namespace UsesThis {
+  template<typename T>
+  struct A {
+    int x;
+
+    template<typename U>
+    static void f();
+
+    template<>
+    void f<int>() {
+      this->x; // expected-error {{invalid use of 'this' outside of a non-static member function}}
+      x; // expected-error {{invalid use of member 'x' in static member function}}
+      A::x; // expected-error {{invalid use of member 'x' in static member function}}
+      +x; // expected-error {{invalid use of member 'x' in static member function}}
+      +A::x; // expected-error {{invalid use of member 'x' in static member function}}
+    }
+
+    template<typename U>
+    void g();
+
+    template<>
+    void g<int>() {
+      this->x;
+      x;
+      A::x;
+      +x;
+      +A::x;
+    }
+
+    template<typename U>
+    static auto h() -> A*;
+
+    template<>
+    auto h<int>() -> decltype(this); // expected-error {{'this' cannot be used in a static member function declaration}}
+  };
+
+  template struct A<int>; // expected-note 2{{in instantiation of}}
+}
diff --git a/clang/unittests/AST/Interp/CMakeLists.txt b/clang/unittests/AST/Interp/CMakeLists.txt
@@ -1,5 +1,6 @@
 add_clang_unittest(InterpTests
   Descriptor.cpp
+  toAPValue.cpp
   )
 
 clang_target_link_libraries(InterpTests

diff --git a/clang/unittests/AST/Interp/toAPValue.cpp b/clang/unittests/AST/Interp/toAPValue.cpp
@@ -0,0 +1,90 @@
+#include "../../../lib/AST/Interp/Context.h"
+#include "../../../lib/AST/Interp/Descriptor.h"
+#include "../../../lib/AST/Interp/Program.h"
+#include "clang/AST/ASTContext.h"
+#include "clang/AST/Decl.h"
+#include "clang/ASTMatchers/ASTMatchFinder.h"
+#include "clang/ASTMatchers/ASTMatchers.h"
+#include "clang/Tooling/Tooling.h"
+#include "gtest/gtest.h"
+
+using namespace clang;
+using namespace clang::interp;
+using namespace clang::ast_matchers;
+
+/// Test the various toAPValue implementations.
+TEST(ToAPValue, Pointers) {
+  constexpr char Code[] =
+      "struct A { bool a; bool z; };\n"
+      "struct S {\n"
+      "  A a[3];\n"
+      "};\n"
+      "constexpr S d = {{{true, false}, {false, true}, {false, false}}};\n"
+      "constexpr const bool *b = &d.a[1].z;\n";
+
+  auto AST = tooling::buildASTFromCodeWithArgs(
+      Code, {"-fexperimental-new-constant-interpreter"});
+
+  auto &Ctx = AST->getASTContext().getInterpContext();
+  Program &Prog = Ctx.getProgram();
+
+  auto getDecl = [&](const char *Name) -> const ValueDecl * {
+    auto Nodes =
+        match(valueDecl(hasName(Name)).bind("var"), AST->getASTContext());
+    assert(Nodes.size() == 1);
+    const auto *D = Nodes[0].getNodeAs<ValueDecl>("var");
+    assert(D);
+    return D;
+  };
+  auto getGlobalPtr = [&](const char *Name) -> Pointer {
+    const VarDecl *D = cast<VarDecl>(getDecl(Name));
+    return Prog.getPtrGlobal(*Prog.getGlobal(D));
+  };
+
+  const Pointer &GP = getGlobalPtr("b");
+  const Pointer &P = GP.deref<Pointer>();
+  ASSERT_TRUE(P.isLive());
+  APValue A = P.toAPValue();
+  ASSERT_TRUE(A.isLValue());
+  ASSERT_TRUE(A.hasLValuePath());
+  const auto &Path = A.getLValuePath();
+  ASSERT_EQ(Path.size(), 3u);
+  ASSERT_EQ(A.getLValueBase(), getDecl("d"));
+}
+
+TEST(ToAPValue, FunctionPointers) {
+  constexpr char Code[] = " constexpr bool foo() { return true; }\n"
+                          " constexpr bool (*func)() = foo;\n";
+
+  auto AST = tooling::buildASTFromCodeWithArgs(
+      Code, {"-fexperimental-new-constant-interpreter"});
+
+  auto &Ctx = AST->getASTContext().getInterpContext();
+  Program &Prog = Ctx.getProgram();
+
+  auto getDecl = [&](const char *Name) -> const ValueDecl * {
+    auto Nodes =
+        match(valueDecl(hasName(Name)).bind("var"), AST->getASTContext());
+    assert(Nodes.size() == 1);
+    const auto *D = Nodes[0].getNodeAs<ValueDecl>("var");
+    assert(D);
+    return D;
+  };
+
+  auto getGlobalPtr = [&](const char *Name) -> Pointer {
+    const VarDecl *D = cast<VarDecl>(getDecl(Name));
+    return Prog.getPtrGlobal(*Prog.getGlobal(D));
+  };
+
+  const Pointer &GP = getGlobalPtr("func");
+  const FunctionPointer &FP = GP.deref<FunctionPointer>();
+  ASSERT_FALSE(FP.isZero());
+  APValue A = FP.toAPValue();
+  ASSERT_TRUE(A.hasValue());
+  ASSERT_TRUE(A.isLValue());
+  ASSERT_TRUE(A.hasLValuePath());
+  const auto &Path = A.getLValuePath();
+  ASSERT_EQ(Path.size(), 0u);
+  ASSERT_FALSE(A.getLValueBase().isNull());
+  ASSERT_EQ(A.getLValueBase().dyn_cast<const ValueDecl *>(), getDecl("foo"));
+}
diff --git a/clang/unittests/ASTMatchers/ASTMatchersNodeTest.cpp b/clang/unittests/ASTMatchers/ASTMatchersNodeTest.cpp
@@ -2321,6 +2321,8 @@ TEST_P(ASTMatchersTest, LambdaCaptureTest_BindsToCaptureOfVarDecl) {
       matches("int main() { int cc; auto f = [=](){ return cc; }; }", matcher));
   EXPECT_TRUE(
       matches("int main() { int cc; auto f = [&](){ return cc; }; }", matcher));
+  EXPECT_TRUE(matches(
+      "void f(int a) { int cc[a]; auto f = [&](){ return cc;}; }", matcher));
 }
 
 TEST_P(ASTMatchersTest, LambdaCaptureTest_BindsToCaptureWithInitializer) {

diff --git a/clang/unittests/Format/FormatTest.cpp b/clang/unittests/Format/FormatTest.cpp
@@ -7977,39 +7977,37 @@ TEST_F(FormatTest, AllowAllArgumentsOnNextLineDontAlign) {
 }
 
 TEST_F(FormatTest, BreakFunctionDefinitionParameters) {
-  FormatStyle Style = getLLVMStyle();
-  EXPECT_FALSE(Style.BreakFunctionDefinitionParameters);
   StringRef Input = "void functionDecl(paramA, paramB, paramC);\n"
                     "void emptyFunctionDefinition() {}\n"
                     "void functionDefinition(int A, int B, int C) {}\n"
-                    "Class::Class(int A, int B) : m_A(A), m_B(B) {}\n";
-  verifyFormat(StringRef("void functionDecl(paramA, paramB, paramC);\n"
-                         "void emptyFunctionDefinition() {}\n"
-                         "void functionDefinition(int A, int B, int C) {}\n"
-                         "Class::Class(int A, int B) : m_A(A), m_B(B) {}\n"),
-               Input, Style);
+                    "Class::Class(int A, int B) : m_A(A), m_B(B) {}";
+  verifyFormat(Input);
+
+  FormatStyle Style = getLLVMStyle();
+  EXPECT_FALSE(Style.BreakFunctionDefinitionParameters);
   Style.BreakFunctionDefinitionParameters = true;
-  verifyFormat(StringRef("void functionDecl(paramA, paramB, paramC);\n"
-                         "void emptyFunctionDefinition() {}\n"
-                         "void functionDefinition(\n"
-                         "    int A, int B, int C) {}\n"
-                         "Class::Class(\n"
-                         "    int A, int B)\n"
-                         "    : m_A(A), m_B(B) {}\n"),
+  verifyFormat("void functionDecl(paramA, paramB, paramC);\n"
+               "void emptyFunctionDefinition() {}\n"
+               "void functionDefinition(\n"
+               "    int A, int B, int C) {}\n"
+               "Class::Class(\n"
+               "    int A, int B)\n"
+               "    : m_A(A), m_B(B) {}",
                Input, Style);
-  // Test the style where all parameters are on their own lines
+
+  // Test the style where all parameters are on their own lines.
   Style.AllowAllParametersOfDeclarationOnNextLine = false;
   Style.BinPackParameters = false;
-  verifyFormat(StringRef("void functionDecl(paramA, paramB, paramC);\n"
-                         "void emptyFunctionDefinition() {}\n"
-                         "void functionDefinition(\n"
-                         "    int A,\n"
-                         "    int B,\n"
-                         "    int C) {}\n"
-                         "Class::Class(\n"
-                         "    int A,\n"
-                         "    int B)\n"
-                         "    : m_A(A), m_B(B) {}\n"),
+  verifyFormat("void functionDecl(paramA, paramB, paramC);\n"
+               "void emptyFunctionDefinition() {}\n"
+               "void functionDefinition(\n"
+               "    int A,\n"
+               "    int B,\n"
+               "    int C) {}\n"
+               "Class::Class(\n"
+               "    int A,\n"
+               "    int B)\n"
+               "    : m_A(A), m_B(B) {}",
                Input, Style);
 }
 

diff --git a/clang/unittests/Format/FormatTestTableGen.cpp b/clang/unittests/Format/FormatTestTableGen.cpp
@@ -72,7 +72,7 @@ TEST_F(FormatTestTableGen, LiteralsAndIdentifiers) {
                "  let 0startID = $TokVarName;\n"
                "  let 0xstartInteger = 0x42;\n"
                "  let someIdentifier = $TokVarName;\n"
-               "}\n");
+               "}");
 }
 
 TEST_F(FormatTestTableGen, BangOperators) {
@@ -101,22 +101,22 @@ TEST_F(FormatTestTableGen, BangOperators) {
                "                                  \"zerozero\",\n"
                "                                  true:  // default\n"
                "                                  \"positivepositive\");\n"
-               "}\n");
+               "}");
 }
 
 TEST_F(FormatTestTableGen, Include) {
-  verifyFormat("include \"test/IncludeFile.h\"\n");
+  verifyFormat("include \"test/IncludeFile.h\"");
 }
 
 TEST_F(FormatTestTableGen, Types) {
-  verifyFormat("def Types : list<int>, bits<3>, list<list<string>> {}\n");
+  verifyFormat("def Types : list<int>, bits<3>, list<list<string>> {}");
 }
 
 TEST_F(FormatTestTableGen, SimpleValue1_SingleLiterals) {
   verifyFormat("def SimpleValue {\n"
                "  let Integer = 42;\n"
                "  let String = \"some string\";\n"
-               "}\n");
+               "}");
 }
 
 TEST_F(FormatTestTableGen, SimpleValue1_MultilineString) {
@@ -129,7 +129,7 @@ TEST_F(FormatTestTableGen, SimpleValue1_MultilineString) {
       "delimited by \\[{ and }\\]. It  can break across lines and the line "
       "breaks are retained in the string. \n"
       "(https://llvm.org/docs/TableGen/ProgRef.html#grammar-token-TokCode)}];\n"
-      "}\n";
+      "}";
   StringRef DefWithCodeMessedUp =
       "def SimpleValueCode {  let  \n"
       "Code=       \n"
@@ -139,23 +139,23 @@ TEST_F(FormatTestTableGen, SimpleValue1_MultilineString) {
       "breaks are retained in the string. \n"
       "(https://llvm.org/docs/TableGen/ProgRef.html#grammar-token-TokCode)}] \n"
       " ;  \n"
-      "   }    \n";
+      "   }    ";
   verifyFormat(DefWithCode, DefWithCodeMessedUp);
 }
 
 TEST_F(FormatTestTableGen, SimpleValue2) {
   verifyFormat("def SimpleValue2 {\n"
                "  let True = true;\n"
                "  let False = false;\n"
-               "}\n");
+               "}");
 }
 
 TEST_F(FormatTestTableGen, SimpleValue3) {
-  verifyFormat("class SimpleValue3<int x> { int Question = ?; }\n");
+  verifyFormat("class SimpleValue3<int x> { int Question = ?; }");
 }
 
 TEST_F(FormatTestTableGen, SimpleValue4) {
-  verifyFormat("def SimpleValue4 { let ValueList = {1, 2, 3}; }\n");
+  verifyFormat("def SimpleValue4 { let ValueList = {1, 2, 3}; }");
 }
 
 TEST_F(FormatTestTableGen, SimpleValue5) {
@@ -166,7 +166,7 @@ TEST_F(FormatTestTableGen, SimpleValue5) {
                "      list<int>>;\n"
                "  let SquareBitsListWithType = [ {1, 2},\n"
                "                                 {3, 4} ]<list<bits<8>>>;\n"
-               "}\n");
+               "}");
 }
 
 TEST_F(FormatTestTableGen, SimpleValue6) {
@@ -184,15 +184,15 @@ TEST_F(FormatTestTableGen, SimpleValue6) {
                "  );\n"
                "  let DAGArgBang = (!cast<SomeType>(\"Some\") i32:$src1,\n"
                "      i32:$src2);\n"
-               "}\n");
+               "}");
 }
 
 TEST_F(FormatTestTableGen, SimpleValue7) {
-  verifyFormat("def SimpleValue7 { let Identifier = SimpleValue; }\n");
+  verifyFormat("def SimpleValue7 { let Identifier = SimpleValue; }");
 }
 
 TEST_F(FormatTestTableGen, SimpleValue8) {
-  verifyFormat("def SimpleValue8 { let Class = SimpleValue3<3>; }\n");
+  verifyFormat("def SimpleValue8 { let Class = SimpleValue3<3>; }");
 }
 
 TEST_F(FormatTestTableGen, ValueSuffix) {
@@ -203,19 +203,18 @@ TEST_F(FormatTestTableGen, ValueSuffix) {
                "  let Slice1 = value[1, ];\n"
                "  let Slice2 = value[4...7, 17, 2...3, 4];\n"
                "  let Field = value.field;\n"
-               "}\n");
+               "}");
 }
 
 TEST_F(FormatTestTableGen, PasteOperator) {
-  verifyFormat(
-      "def Paste#\"Operator\" { string Paste = \"Paste\"#operator; }\n");
+  verifyFormat("def Paste#\"Operator\" { string Paste = \"Paste\"#operator; }");
 
   verifyFormat("def [\"Traring\", \"Paste\"]# {\n"
                "  string X = Traring#;\n"
                "  string Y = List<\"Operator\">#;\n"
                "  string Z = [\"Traring\", \"Paste\", \"Traring\", \"Paste\",\n"
                "              \"Traring\", \"Paste\"]#;\n"
-               "}\n");
+               "}");
 }
 
 TEST_F(FormatTestTableGen, ClassDefinition) {
@@ -229,9 +228,9 @@ TEST_F(FormatTestTableGen, ClassDefinition) {
                "  defvar Item6 = 6;\n"
                "  let Item7 = ?;\n"
                "  assert !ge(x, 0), \"Assert7\";\n"
-               "}\n");
+               "}");
 
-  verifyFormat("class FPFormat<bits<3> val> { bits<3> Value = val; }\n");
+  verifyFormat("class FPFormat<bits<3> val> { bits<3> Value = val; }");
 }
 
 TEST_F(FormatTestTableGen, Def) {
@@ -240,18 +239,18 @@ TEST_F(FormatTestTableGen, Def) {
                "  let Item2{1, 3...4} = {1, 2};\n"
                "  defvar Item3 = (ops nodty:$node1, nodty:$node2);\n"
                "  assert !le(Item2, 0), \"Assert4\";\n"
-               "}\n");
+               "}");
 
-  verifyFormat("class FPFormat<bits<3> val> { bits<3> Value = val; }\n");
+  verifyFormat("class FPFormat<bits<3> val> { bits<3> Value = val; }");
 
-  verifyFormat("def NotFP : FPFormat<0>;\n");
+  verifyFormat("def NotFP : FPFormat<0>;");
 }
 
 TEST_F(FormatTestTableGen, Let) {
   verifyFormat("let x = 1, y = value<type>,\n"
                "    z = !and(!gt(!add(1, 2), !sub(3, 4)), !isa<Ty>($x)) in {\n"
                "  class Class1 : Parent<x, y> { let Item1 = z; }\n"
-               "}\n");
+               "}");
 }
 
 TEST_F(FormatTestTableGen, MultiClass) {
@@ -287,7 +286,7 @@ TEST_F(FormatTestTableGen, MultiClass) {
                "      }\n"
                "    }\n"
                "  }\n"
-               "}\n");
+               "}");
 }
 
 TEST_F(FormatTestTableGen, MultiClassesWithPasteOperator) {
@@ -297,25 +296,25 @@ TEST_F(FormatTestTableGen, MultiClassesWithPasteOperator) {
                "  def : Def#x<i>;\n"
                "  def : Def#y<i>;\n"
                "}\n"
-               "multiclass MultiClass2<int i> { def : Def#x<i>; }\n");
+               "multiclass MultiClass2<int i> { def : Def#x<i>; }");
 }
 
 TEST_F(FormatTestTableGen, Defm) {
-  verifyFormat("defm : Multiclass<0>;\n");
+  verifyFormat("defm : Multiclass<0>;");
 
-  verifyFormat("defm Defm1 : Multiclass<1>;\n");
+  verifyFormat("defm Defm1 : Multiclass<1>;");
 }
 
 TEST_F(FormatTestTableGen, Defset) {
   verifyFormat("defset list<Class> DefSet1 = {\n"
                "  def Def1 : Class<1>;\n"
                "  def Def2 : Class<2>;\n"
-               "}\n");
+               "}");
 }
 
 TEST_F(FormatTestTableGen, Defvar) {
   verifyFormat("defvar DefVar1 = !cond(!ge(!size(PaseOperator.Paste), 1): 1,\n"
-               "                       true: 0);\n");
+               "                       true: 0);");
 }
 
 TEST_F(FormatTestTableGen, ForEach) {
@@ -325,21 +324,21 @@ TEST_F(FormatTestTableGen, ForEach) {
       "                  (!if(!lt(x, i),\n"
       "                       !shl(!mul(x, i), !size(\"string\")),\n"
       "                       !size(!strconcat(\"a\", \"b\", \"c\"))))>;\n"
-      "}\n");
+      "}");
 }
 
-TEST_F(FormatTestTableGen, Dump) { verifyFormat("dump \"Dump\";\n"); }
+TEST_F(FormatTestTableGen, Dump) { verifyFormat("dump \"Dump\";"); }
 
 TEST_F(FormatTestTableGen, If) {
   verifyFormat("if !gt(x, 0) then {\n"
                "  def : IfThen<x>;\n"
                "} else {\n"
                "  def : IfElse<x>;\n"
-               "}\n");
+               "}");
 }
 
 TEST_F(FormatTestTableGen, Assert) {
-  verifyFormat("assert !le(DefVar1, 0), \"Assert1\";\n");
+  verifyFormat("assert !le(DefVar1, 0), \"Assert1\";");
 }
 
 TEST_F(FormatTestTableGen, DAGArgBreakElements) {
@@ -349,33 +348,33 @@ TEST_F(FormatTestTableGen, DAGArgBreakElements) {
   ASSERT_EQ(Style.TableGenBreakInsideDAGArg, FormatStyle::DAS_DontBreak);
   verifyFormat("def Def : Parent {\n"
                "  let dagarg = (ins a:$src1, aa:$src2, aaa:$src3)\n"
-               "}\n",
+               "}",
                Style);
   // This option forces to break inside the DAGArg.
   Style.TableGenBreakInsideDAGArg = FormatStyle::DAS_BreakElements;
   verifyFormat("def Def : Parent {\n"
                "  let dagarg = (ins a:$src1,\n"
                "                    aa:$src2,\n"
                "                    aaa:$src3);\n"
-               "}\n",
+               "}",
                Style);
   verifyFormat("def Def : Parent {\n"
                "  let dagarg = (other a:$src1,\n"
                "                      aa:$src2,\n"
                "                      aaa:$src3);\n"
-               "}\n",
+               "}",
                Style);
   // Then, limit the DAGArg operator only to "ins".
   Style.TableGenBreakingDAGArgOperators = {"ins"};
   verifyFormat("def Def : Parent {\n"
                "  let dagarg = (ins a:$src1,\n"
                "                    aa:$src2,\n"
                "                    aaa:$src3);\n"
-               "}\n",
+               "}",
                Style);
   verifyFormat("def Def : Parent {\n"
                "  let dagarg = (other a:$src1, aa:$src2, aaa:$src3)\n"
-               "}\n",
+               "}",
                Style);
 }
 
@@ -385,7 +384,7 @@ TEST_F(FormatTestTableGen, DAGArgBreakAll) {
   // By default, the DAGArg does not have a break inside.
   verifyFormat("def Def : Parent {\n"
                "  let dagarg = (ins a:$src1, aa:$src2, aaa:$src3)\n"
-               "}\n",
+               "}",
                Style);
   // This option forces to break inside the DAGArg.
   Style.TableGenBreakInsideDAGArg = FormatStyle::DAS_BreakAll;
@@ -395,15 +394,15 @@ TEST_F(FormatTestTableGen, DAGArgBreakAll) {
                "      aa:$src2,\n"
                "      aaa:$src3\n"
                "  );\n"
-               "}\n",
+               "}",
                Style);
   verifyFormat("def Def : Parent {\n"
                "  let dagarg = (other\n"
                "      a:$src1,\n"
                "      aa:$src2,\n"
                "      aaa:$src3\n"
                "  );\n"
-               "}\n",
+               "}",
                Style);
   // Then, limit the DAGArg operator only to "ins".
   Style.TableGenBreakingDAGArgOperators = {"ins"};
@@ -413,11 +412,11 @@ TEST_F(FormatTestTableGen, DAGArgBreakAll) {
                "      aa:$src2,\n"
                "      aaa:$src3\n"
                "  );\n"
-               "}\n",
+               "}",
                Style);
   verifyFormat("def Def : Parent {\n"
                "  let dagarg = (other a:$src1, aa:$src2, aaa:$src3);\n"
-               "}\n",
+               "}",
                Style);
 }
 
@@ -432,11 +431,11 @@ TEST_F(FormatTestTableGen, DAGArgAlignment) {
                "      aa:$src2,\n"
                "      aaa:$src3\n"
                "  )\n"
-               "}\n",
+               "}",
                Style);
   verifyFormat("def Def : Parent {\n"
                "  let dagarg = (not a:$src1, aa:$src2, aaa:$src2)\n"
-               "}\n",
+               "}",
                Style);
   Style.AlignConsecutiveTableGenBreakingDAGArgColons.Enabled = true;
   verifyFormat("def Def : Parent {\n"
@@ -445,11 +444,11 @@ TEST_F(FormatTestTableGen, DAGArgAlignment) {
                "      aa :$src2,\n"
                "      aaa:$src3\n"
                "  )\n"
-               "}\n",
+               "}",
                Style);
   verifyFormat("def Def : Parent {\n"
                "  let dagarg = (not a:$src1, aa:$src2, aaa:$src2)\n"
-               "}\n",
+               "}",
                Style);
 }
 
@@ -458,12 +457,12 @@ TEST_F(FormatTestTableGen, CondOperatorAlignment) {
   Style.ColumnLimit = 60;
   verifyFormat("let CondOpe1 = !cond(!eq(size, 1): 1,\n"
                "                     !eq(size, 16): 1,\n"
-               "                     true: 0);\n",
+               "                     true: 0);",
                Style);
   Style.AlignConsecutiveTableGenCondOperatorColons.Enabled = true;
   verifyFormat("let CondOpe1 = !cond(!eq(size, 1) : 1,\n"
                "                     !eq(size, 16): 1,\n"
-               "                     true         : 0);\n",
+               "                     true         : 0);",
                Style);
 }
 
@@ -472,12 +471,12 @@ TEST_F(FormatTestTableGen, DefAlignment) {
   Style.ColumnLimit = 60;
   verifyFormat("def Def : Parent {}\n"
                "def DefDef : Parent {}\n"
-               "def DefDefDef : Parent {}\n",
+               "def DefDefDef : Parent {}",
                Style);
   Style.AlignConsecutiveTableGenDefinitionColons.Enabled = true;
   verifyFormat("def Def       : Parent {}\n"
                "def DefDef    : Parent {}\n"
-               "def DefDefDef : Parent {}\n",
+               "def DefDefDef : Parent {}",
                Style);
 }
Original file line number	Diff line number	Diff line change
Expand Up		@@ -6,3 +6,5 @@

		/// Used to assert because the two parameters to _rotl do not have the same type.
		static_assert(_rotl(0x01, 5) == 32);

		static_assert(alignof(__unaligned int) == 1, "");