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/Driver/ToolChain.cpp b/clang/lib/Driver/ToolChain.cpp
@@ -796,7 +796,13 @@ ToolChain::getTargetSubDirPath(StringRef BaseDir) const {
 std::optional<std::string> ToolChain::getRuntimePath() const {
   SmallString<128> P(D.ResourceDir);
   llvm::sys::path::append(P, "lib");
-  return getTargetSubDirPath(P);
+  if (auto Ret = getTargetSubDirPath(P))
+    return Ret;
+  // Darwin does not use per-target runtime directory.
+  if (Triple.isOSDarwin())
+    return {};
+  llvm::sys::path::append(P, Triple.str());
+  return std::string(P);
 }
 
 std::optional<std::string> ToolChain::getStdlibPath() const {

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/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/arm-compiler-rt.c b/clang/test/Driver/arm-compiler-rt.c
@@ -10,47 +10,47 @@
 // RUN:     -resource-dir=%S/Inputs/resource_dir_with_arch_subdir \
 // RUN:     -rtlib=compiler-rt -### %s 2>&1 \
 // RUN:   | FileCheck %s -check-prefix ARM-GNUEABI
-// ARM-GNUEABI: "{{.*[/\\]}}libclang_rt.builtins-arm.a"
+// ARM-GNUEABI: "{{.*[/\\]}}libclang_rt.builtins.a"
 
 // RUN: %clang -target arm-linux-gnueabi \
 // RUN:     --sysroot=%S/Inputs/resource_dir_with_arch_subdir \
 // RUN:     -resource-dir=%S/Inputs/resource_dir_with_arch_subdir \
 // RUN:     -rtlib=compiler-rt -mfloat-abi=hard -### %s 2>&1 \
 // RUN:   | FileCheck %s -check-prefix ARM-GNUEABI-ABI
-// ARM-GNUEABI-ABI: "{{.*[/\\]}}libclang_rt.builtins-armhf.a"
+// ARM-GNUEABI-ABI: "{{.*[/\\]}}libclang_rt.builtins.a"
 
 // RUN: %clang -target arm-linux-gnueabihf \
 // RUN:     --sysroot=%S/Inputs/resource_dir_with_arch_subdir \
 // RUN:     -resource-dir=%S/Inputs/resource_dir_with_arch_subdir \
 // RUN:     -rtlib=compiler-rt -### %s 2>&1 \
 // RUN:   | FileCheck %s -check-prefix ARM-GNUEABIHF
-// ARM-GNUEABIHF: "{{.*[/\\]}}libclang_rt.builtins-armhf.a"
+// ARM-GNUEABIHF: "{{.*[/\\]}}libclang_rt.builtins.a"
 
 // RUN: %clang -target arm-linux-gnueabihf \
 // RUN:     --sysroot=%S/Inputs/resource_dir_with_arch_subdir \
 // RUN:     -resource-dir=%S/Inputs/resource_dir_with_arch_subdir \
 // RUN:     -rtlib=compiler-rt -mfloat-abi=soft -### %s 2>&1 \
 // RUN:   | FileCheck %s -check-prefix ARM-GNUEABIHF-ABI
-// ARM-GNUEABIHF-ABI: "{{.*[/\\]}}libclang_rt.builtins-arm.a"
+// ARM-GNUEABIHF-ABI: "{{.*[/\\]}}libclang_rt.builtins.a"
 
 // RUN: %clang -target arm-windows-itanium \
 // RUN:     --sysroot=%S/Inputs/resource_dir_with_arch_subdir \
 // RUN:     -resource-dir=%S/Inputs/resource_dir_with_arch_subdir \
 // RUN:     -rtlib=compiler-rt -### %s 2>&1 \
 // RUN:   | FileCheck %s -check-prefix ARM-WINDOWS
-// ARM-WINDOWS: "{{.*[/\\]}}clang_rt.builtins-arm.lib"
+// ARM-WINDOWS: "{{.*[/\\]}}clang_rt.builtins.lib"
 
 // RUN: %clang -target arm-linux-androideabi \
 // RUN:     --sysroot=%S/Inputs/resource_dir_with_arch_subdir \
 // RUN:     -resource-dir=%S/Inputs/resource_dir_with_arch_subdir \
 // RUN:     -rtlib=compiler-rt -### %s 2>&1 \
 // RUN:   | FileCheck %s -check-prefix ARM-ANDROID
-// ARM-ANDROID: "{{.*[/\\]}}libclang_rt.builtins-arm-android.a"
+// ARM-ANDROID: "{{.*[/\\]}}libclang_rt.builtins.a"
 
 // RUN: not %clang --target=arm-linux-androideabi \
 // RUN:     --sysroot=%S/Inputs/resource_dir_with_arch_subdir \
 // RUN:     -resource-dir=%S/Inputs/resource_dir_with_arch_subdir \
 // RUN:     -rtlib=compiler-rt -mfloat-abi=hard -### %s 2>&1 \
 // RUN:   | FileCheck %s -check-prefix ARM-ANDROIDHF
-// ARM-ANDROIDHF: "{{.*[/\\]}}libclang_rt.builtins-armhf-android.a"
+// ARM-ANDROIDHF: "{{.*[/\\]}}libclang_rt.builtins.a"
 
diff --git a/clang/test/Driver/cl-link.c b/clang/test/Driver/cl-link.c
@@ -13,20 +13,20 @@
 // ASAN: link.exe
 // ASAN: "-debug"
 // ASAN: "-incremental:no"
-// ASAN: "{{[^"]*}}clang_rt.asan-i386.lib"
-// ASAN: "-wholearchive:{{.*}}clang_rt.asan-i386.lib"
-// ASAN: "{{[^"]*}}clang_rt.asan_cxx-i386.lib"
-// ASAN: "-wholearchive:{{.*}}clang_rt.asan_cxx-i386.lib"
+// ASAN: "{{[^"]*}}clang_rt.asan.lib"
+// ASAN: "-wholearchive:{{.*}}clang_rt.asan.lib"
+// ASAN: "{{[^"]*}}clang_rt.asan_cxx.lib"
+// ASAN: "-wholearchive:{{.*}}clang_rt.asan_cxx.lib"
 // ASAN: "{{.*}}cl-link{{.*}}.obj"
 
 // RUN: %clang_cl -m32 -arch:IA32 --target=i386-pc-win32 /MD /Tc%s -fuse-ld=link -### -fsanitize=address 2>&1 | FileCheck --check-prefix=ASAN-MD %s
 // ASAN-MD: link.exe
 // ASAN-MD: "-debug"
 // ASAN-MD: "-incremental:no"
-// ASAN-MD: "{{.*}}clang_rt.asan_dynamic-i386.lib"
-// ASAN-MD: "{{[^"]*}}clang_rt.asan_dynamic_runtime_thunk-i386.lib"
+// ASAN-MD: "{{.*}}clang_rt.asan_dynamic.lib"
+// ASAN-MD: "{{[^"]*}}clang_rt.asan_dynamic_runtime_thunk.lib"
 // ASAN-MD: "-include:___asan_seh_interceptor"
-// ASAN-MD: "-wholearchive:{{.*}}clang_rt.asan_dynamic_runtime_thunk-i386.lib"
+// ASAN-MD: "-wholearchive:{{.*}}clang_rt.asan_dynamic_runtime_thunk.lib"
 // ASAN-MD: "{{.*}}cl-link{{.*}}.obj"
 
 // RUN: %clang_cl /LD -fuse-ld=link -### /Tc%s 2>&1 | FileCheck --check-prefix=DLL %s
@@ -40,7 +40,7 @@
 // ASAN-DLL: "-dll"
 // ASAN-DLL: "-debug"
 // ASAN-DLL: "-incremental:no"
-// ASAN-DLL: "{{.*}}clang_rt.asan_dll_thunk-i386.lib"
+// ASAN-DLL: "{{.*}}clang_rt.asan_dll_thunk.lib"
 // ASAN-DLL: "{{.*}}cl-link{{.*}}.obj"
 
 // RUN: %clang_cl /Zi /Tc%s -fuse-ld=link -### 2>&1 | FileCheck --check-prefix=DEBUG %s

diff --git a/clang/test/Driver/compiler-rt-unwind.c b/clang/test/Driver/compiler-rt-unwind.c
@@ -98,14 +98,14 @@
 // RUN:     --target=x86_64-w64-mingw32 -rtlib=compiler-rt --unwindlib=libunwind \
 // RUN:     -shared-libgcc \
 // RUN:   | FileCheck --check-prefix=MINGW-RTLIB-COMPILER-RT-SHARED-UNWINDLIB-COMPILER-RT %s
-// MINGW-RTLIB-COMPILER-RT-SHARED-UNWINDLIB-COMPILER-RT: "{{.*}}libclang_rt.builtins-x86_64.a"
+// MINGW-RTLIB-COMPILER-RT-SHARED-UNWINDLIB-COMPILER-RT: "{{.*}}libclang_rt.builtins.a"
 // MINGW-RTLIB-COMPILER-RT-SHARED-UNWINDLIB-COMPILER-RT-SAME: "-l:libunwind.dll.a"
 //
 // RUN: %clang -### %s 2>&1 \
 // RUN:     --target=x86_64-w64-mingw32 -rtlib=compiler-rt --unwindlib=libunwind \
 // RUN:     -static-libgcc \
 // RUN:   | FileCheck --check-prefix=MINGW-RTLIB-COMPILER-RT-STATIC-UNWINDLIB-COMPILER-RT %s
-// MINGW-RTLIB-COMPILER-RT-STATIC-UNWINDLIB-COMPILER-RT: "{{.*}}libclang_rt.builtins-x86_64.a"
+// MINGW-RTLIB-COMPILER-RT-STATIC-UNWINDLIB-COMPILER-RT: "{{.*}}libclang_rt.builtins.a"
 // MINGW-RTLIB-COMPILER-RT-STATIC-UNWINDLIB-COMPILER-RT-SAME: "-l:libunwind.a"
 //
 // RUN: %clang -### %s 2>&1 \
@@ -114,5 +114,5 @@
 // RUN: %clangxx -### %s 2>&1 \
 // RUN:     --target=x86_64-w64-mingw32 -rtlib=compiler-rt --unwindlib=libunwind \
 // RUN:   | FileCheck --check-prefix=MINGW-RTLIB-COMPILER-RT-UNWINDLIB-COMPILER-RT %s
-// MINGW-RTLIB-COMPILER-RT-UNWINDLIB-COMPILER-RT: "{{.*}}libclang_rt.builtins-x86_64.a"
+// MINGW-RTLIB-COMPILER-RT-UNWINDLIB-COMPILER-RT: "{{.*}}libclang_rt.builtins.a"
 // MINGW-RTLIB-COMPILER-RT-UNWINDLIB-COMPILER-RT-SAME: "-lunwind"
diff --git a/clang/test/Driver/coverage-ld.c b/clang/test/Driver/coverage-ld.c
@@ -33,7 +33,7 @@
 // RUN:   | FileCheck --check-prefix=CHECK-FREEBSD-X86-64 %s
 //
 // CHECK-FREEBSD-X86-64: "{{(.*[^-.0-9A-Z_a-z])?}}ld{{(.exe)?}}"
-// CHECK-FREEBSD-X86-64: "{{.*}}/Inputs/resource_dir{{/|\\\\}}lib{{/|\\\\}}freebsd{{/|\\\\}}libclang_rt.profile-x86_64.a"
+// CHECK-FREEBSD-X86-64: "{{.*}}/Inputs/resource_dir{{/|\\\\}}lib{{/|\\\\}}x86_64-unknown-freebsd{{/|\\\\}}libclang_rt.profile.a"
 //
 // RUN: %clang -### %s 2>&1 \
 // RUN:     --target=x86_64-unknown-netbsd --coverage -fuse-ld=ld \
@@ -42,7 +42,7 @@
 // RUN:   | FileCheck --check-prefix=CHECK-NETBSD-X86-64 %s
 
 // CHECK-NETBSD-X86-64: "{{(.*[^-.0-9A-Z_a-z])?}}ld{{(.exe)?}}"
-// CHECK-NETBSD-X86-64: "{{.*}}/Inputs/resource_dir{{/|\\\\}}lib{{/|\\\\}}netbsd{{/|\\\\}}libclang_rt.profile-x86_64.a"
+// CHECK-NETBSD-X86-64: "{{.*}}/Inputs/resource_dir{{/|\\\\}}lib{{/|\\\\}}x86_64-unknown-netbsd{{/|\\\\}}libclang_rt.profile.a"
 
 // RUN: %clang -### %s 2>&1 \
 // RUN:     --target=x86_64-unknown-openbsd --coverage -fuse-ld=ld \
@@ -51,7 +51,7 @@
 // RUN:   | FileCheck --check-prefix=CHECK-OPENBSD-X86-64 %s
 
 // CHECK-OPENBSD-X86-64: "{{(.*[^-.0-9A-Z_a-z])?}}ld{{(.exe)?}}"
-// CHECK-OPENBSD-X86-64: "{{.*}}/Inputs/resource_dir{{/|\\\\}}lib{{/|\\\\}}openbsd{{/|\\\\}}libclang_rt.profile-x86_64.a"
+// CHECK-OPENBSD-X86-64: "{{.*}}/Inputs/resource_dir{{/|\\\\}}lib{{/|\\\\}}x86_64-unknown-openbsd{{/|\\\\}}libclang_rt.profile.a"
 
 // RUN: %clang -### %s 2>&1 \
 // RUN:     --target=arm-linux-androideabi --coverage -fuse-ld=ld \
@@ -60,4 +60,4 @@
 // RUN:   | FileCheck --check-prefix=CHECK-ANDROID-ARM %s
 //
 // CHECK-ANDROID-ARM: "{{(.*[^.0-9A-Z_a-z])?}}ld.lld{{(.exe)?}}"
-// CHECK-ANDROID-ARM: "{{.*}}/Inputs/resource_dir{{/|\\\\}}lib{{/|\\\\}}linux{{/|\\\\}}libclang_rt.profile-arm-android.a"
+// CHECK-ANDROID-ARM: "{{.*}}/Inputs/resource_dir{{/|\\\\}}lib{{/|\\\\}}arm-unknown-linux-android{{/|\\\\}}libclang_rt.profile.a"
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/Driver/instrprof-ld.c b/clang/test/Driver/instrprof-ld.c
@@ -34,7 +34,7 @@
 // RUN:   | FileCheck --check-prefix=CHECK-FREEBSD-X86-64 %s
 //
 // CHECK-FREEBSD-X86-64: "{{(.*[^-.0-9A-Z_a-z])?}}ld{{(.exe)?}}"
-// CHECK-FREEBSD-X86-64: "{{.*}}/Inputs/resource_dir{{/|\\\\}}lib{{/|\\\\}}freebsd{{/|\\\\}}libclang_rt.profile-x86_64.a"
+// CHECK-FREEBSD-X86-64: "{{.*}}/Inputs/resource_dir{{/|\\\\}}lib{{/|\\\\}}x86_64-unknown-freebsd{{/|\\\\}}libclang_rt.profile.a"
 //
 // RUN: %clang -### %s 2>&1 \
 // RUN:     --target=x86_64-unknown-netbsd -fprofile-instr-generate -fuse-ld=ld \
@@ -43,7 +43,7 @@
 // RUN:   | FileCheck --check-prefix=CHECK-NETBSD-X86-64 %s
 
 // CHECK-NETBSD-X86-64: "{{(.*[^-.0-9A-Z_a-z])?}}ld{{(.exe)?}}"
-// CHECK-NETBSD-X86-64: "{{.*}}/Inputs/resource_dir{{/|\\\\}}lib{{/|\\\\}}netbsd{{/|\\\\}}libclang_rt.profile-x86_64.a"
+// CHECK-NETBSD-X86-64: "{{.*}}/Inputs/resource_dir{{/|\\\\}}lib{{/|\\\\}}x86_64-unknown-netbsd{{/|\\\\}}libclang_rt.profile.a"
 
 // RUN: %clang -### %s 2>&1 \
 // RUN:     --target=x86_64-unknown-openbsd -fprofile-instr-generate -fuse-ld=ld \
@@ -52,7 +52,7 @@
 // RUN:   | FileCheck --check-prefix=CHECK-OPENBSD-X86-64 %s
 
 // CHECK-OPENBSD-X86-64: "{{(.*[^-.0-9A-Z_a-z])?}}ld{{(.exe)?}}"
-// CHECK-OPENBSD-X86-64: "{{.*}}/Inputs/resource_dir{{/|\\\\}}lib{{/|\\\\}}openbsd{{/|\\\\}}libclang_rt.profile-x86_64.a"
+// CHECK-OPENBSD-X86-64: "{{.*}}/Inputs/resource_dir{{/|\\\\}}lib{{/|\\\\}}x86_64-unknown-openbsd{{/|\\\\}}libclang_rt.profile.a"
 
 // RUN: %clang -### %s 2>&1 \
 // RUN:     -shared \
@@ -72,7 +72,7 @@
 // RUN:   | FileCheck --check-prefix=CHECK-LINUX-X86-64-SHARED %s
 //
 // CHECK-LINUX-X86-64-SHARED: "{{(.*[^-.0-9A-Z_a-z])?}}ld{{(.exe)?}}"
-// CHECK-LINUX-X86-64-SHARED: "{{.*}}/Inputs/resource_dir{{/|\\\\}}lib{{.*}}linux{{.*}}libclang_rt.profile.a" {{.*}} "-lc"
+// CHECK-LINUX-X86-64-SHARED: "{{.*}}/Inputs/resource_dir{{/|\\\\}}lib{{.*}}x86_64-unknown-linux{{.*}}libclang_rt.profile.a" {{.*}} "-lc"
 //
 // RUN: %clang -### %s 2>&1 \
 // RUN:     -shared \
@@ -82,7 +82,7 @@
 // RUN:   | FileCheck --check-prefix=CHECK-FREEBSD-X86-64-SHARED %s
 //
 // CHECK-FREEBSD-X86-64-SHARED: "{{(.*[^-.0-9A-Z_a-z])?}}ld{{(.exe)?}}"
-// CHECK-FREEBSD-X86-64-SHARED: "{{.*}}/Inputs/resource_dir{{/|\\\\}}lib{{/|\\\\}}freebsd{{/|\\\\}}libclang_rt.profile-x86_64.a"
+// CHECK-FREEBSD-X86-64-SHARED: "{{.*}}/Inputs/resource_dir{{/|\\\\}}lib{{/|\\\\}}x86_64-unknown-freebsd{{/|\\\\}}libclang_rt.profile.a"
 //
 // RUN: %clang -### %s 2>&1 \
 // RUN:     -shared \
@@ -92,7 +92,7 @@
 // RUN:   | FileCheck --check-prefix=CHECK-NETBSD-X86-64-SHARED %s
 
 // CHECK-NETBSD-X86-64-SHARED: "{{(.*[^-.0-9A-Z_a-z])?}}ld{{(.exe)?}}"
-// CHECK-NETBSD-X86-64-SHARED: "{{.*}}/Inputs/resource_dir{{/|\\\\}}lib{{/|\\\\}}netbsd{{/|\\\\}}libclang_rt.profile-x86_64.a"
+// CHECK-NETBSD-X86-64-SHARED: "{{.*}}/Inputs/resource_dir{{/|\\\\}}lib{{/|\\\\}}x86_64-unknown-netbsd{{/|\\\\}}libclang_rt.profile.a"
 
 // RUN: %clang -### %s 2>&1 \
 // RUN:     -shared \
@@ -102,7 +102,7 @@
 // RUN:   | FileCheck --check-prefix=CHECK-OPENBSD-X86-64-SHARED %s
 
 // CHECK-OPENBSD-X86-64-SHARED: "{{(.*[^-.0-9A-Z_a-z])?}}ld{{(.exe)?}}"
-// CHECK-OPENBSD-X86-64-SHARED: "{{.*}}/Inputs/resource_dir{{/|\\\\}}lib{{/|\\\\}}openbsd{{/|\\\\}}libclang_rt.profile-x86_64.a"
+// CHECK-OPENBSD-X86-64-SHARED: "{{.*}}/Inputs/resource_dir{{/|\\\\}}lib{{/|\\\\}}x86_64-unknown-openbsd{{/|\\\\}}libclang_rt.profile.a"
 
 // RUN: %clang -### %s 2>&1 \
 // RUN:     --target=x86_64-apple-darwin14 -fprofile-instr-generate -fuse-ld=ld \
@@ -174,7 +174,7 @@
 // RUN:   | FileCheck --check-prefix=CHECK-MINGW-X86-64 %s
 //
 // CHECK-MINGW-X86-64: "{{(.*[^.0-9A-Z_a-z])?}}ld{{(.exe)?}}"
-// CHECK-MINGW-X86-64: "{{.*}}/Inputs/resource_dir{{/|\\\\}}lib{{/|\\\\}}windows{{/|\\\\}}libclang_rt.profile-x86_64.a"
+// CHECK-MINGW-X86-64: "{{.*}}/Inputs/resource_dir{{/|\\\\}}lib{{/|\\\\}}x86_64-unknown-windows-gnu{{/|\\\\}}libclang_rt.profile.a"
 
 // Test instrumented profiling dependent-lib flags
 //

diff --git a/clang/test/Driver/linux-ld.c b/clang/test/Driver/linux-ld.c
@@ -99,9 +99,9 @@
 // CHECK-LD-RT-ANDROID: "--eh-frame-hdr"
 // CHECK-LD-RT-ANDROID: "-m" "armelf_linux_eabi"
 // CHECK-LD-RT-ANDROID: "-dynamic-linker"
-// CHECK-LD-RT-ANDROID: libclang_rt.builtins-arm-android.a"
+// CHECK-LD-RT-ANDROID: libclang_rt.builtins.a"
 // CHECK-LD-RT-ANDROID: "-lc"
-// CHECK-LD-RT-ANDROID: libclang_rt.builtins-arm-android.a"
+// CHECK-LD-RT-ANDROID: libclang_rt.builtins.a"
 //
 // RUN: %clang -### %s -no-pie 2>&1 \
 // RUN:     --target=x86_64-unknown-linux -rtlib=platform --unwindlib=platform \
@@ -264,7 +264,7 @@
 // RUN:     --sysroot=%S/Inputs/basic_linux_tree \
 // RUN:   | FileCheck --check-prefix=CHECK-CLANG-ANDROID-STATIC %s
 // CHECK-CLANG-ANDROID-STATIC: "{{.*}}ld{{(.exe)?}}" "--sysroot=[[SYSROOT:[^"]+]]"
-// CHECK-CLANG-ANDROID-STATIC: "--start-group" "{{[^"]*}}{{/|\\\\}}libclang_rt.builtins-aarch64-android.a" "-l:libunwind.a" "-lc" "--end-group"
+// CHECK-CLANG-ANDROID-STATIC: "--start-group" "{{[^"]*}}{{/|\\\\}}libclang_rt.builtins.a" "-l:libunwind.a" "-lc" "--end-group"
 //
 // RUN: %clang -### %s 2>&1      \
 // RUN:     --target=x86_64-unknown-linux -rtlib=platform --unwindlib=platform \

diff --git a/clang/test/Driver/mingw-sanitizers.c b/clang/test/Driver/mingw-sanitizers.c
@@ -4,17 +4,17 @@
 //
 // ASAN-ALL-NOT:"-l{{[^"]+"]}}"
 // ASAN-ALL-NOT:"[[INPUT]]"
-// ASAN-I686:   "{{[^"]*}}libclang_rt.asan_dynamic-i386.dll.a"
-// ASAN-X86_64: "{{[^"]*}}libclang_rt.asan_dynamic-x86_64.dll.a"
+// ASAN-I686:   "{{[^"]*}}libclang_rt.asan_dynamic.dll.a"
+// ASAN-X86_64: "{{[^"]*}}libclang_rt.asan_dynamic.dll.a"
 // ASAN-ALL:    "-lcomponent"
 // ASAN-ALL:    "[[INPUT]]"
-// ASAN-I686:   "{{[^"]*}}libclang_rt.asan_dynamic-i386.dll.a"
-// ASAN-I686:   "{{[^"]*}}libclang_rt.asan_dynamic_runtime_thunk-i386.a"
+// ASAN-I686:   "{{[^"]*}}libclang_rt.asan_dynamic.dll.a"
+// ASAN-I686:   "{{[^"]*}}libclang_rt.asan_dynamic_runtime_thunk.a"
 // ASAN-I686:   "--require-defined" "___asan_seh_interceptor"
-// ASAN-I686:   "--whole-archive" "{{[^"]*}}libclang_rt.asan_dynamic_runtime_thunk-i386.a" "--no-whole-archive"
-// ASAN-X86_64: "{{[^"]*}}libclang_rt.asan_dynamic-x86_64.dll.a"
-// ASAN-X86_64: "{{[^"]*}}libclang_rt.asan_dynamic_runtime_thunk-x86_64.a"
+// ASAN-I686:   "--whole-archive" "{{[^"]*}}libclang_rt.asan_dynamic_runtime_thunk.a" "--no-whole-archive"
+// ASAN-X86_64: "{{[^"]*}}libclang_rt.asan_dynamic.dll.a"
+// ASAN-X86_64: "{{[^"]*}}libclang_rt.asan_dynamic_runtime_thunk.a"
 // ASAN-X86_64: "--require-defined" "__asan_seh_interceptor"
-// ASAN-X86_64: "--whole-archive" "{{[^"]*}}libclang_rt.asan_dynamic_runtime_thunk-x86_64.a" "--no-whole-archive"
+// ASAN-X86_64: "--whole-archive" "{{[^"]*}}libclang_rt.asan_dynamic_runtime_thunk.a" "--no-whole-archive"
 
 // RUN: %clang -target x86_64-windows-gnu %s -### -fsanitize=vptr
diff --git a/clang/test/Driver/msp430-toolchain.c b/clang/test/Driver/msp430-toolchain.c
@@ -103,8 +103,8 @@
 // LIBS-COMPILER-RT-POS: "{{.*}}/Inputs/basic_msp430_tree/lib/gcc/msp430-elf/8.3.1/430{{/|\\\\}}crtbegin_no_eh.o"
 // LIBS-COMPILER-RT-POS: "-L{{.*}}/Inputs/basic_msp430_tree/lib/gcc/msp430-elf/8.3.1/430"
 // LIBS-COMPILER-RT-POS: "-L{{.*}}/Inputs/basic_msp430_tree{{/|\\\\}}msp430-elf{{/|\\\\}}lib/430"
-// LIBS-COMPILER-RT-POS: "{{[^"]*}}libclang_rt.builtins-msp430.a" "--start-group" "-lmul_none" "-lc" "{{[^"]*}}libclang_rt.builtins-msp430.a" "-lcrt" "-lnosys" "--end-group" "{{[^"]*}}libclang_rt.builtins-msp430.a"
-// LIBS-COMPILER-RT-POS: "{{.*}}/Inputs/basic_msp430_tree/lib/gcc/msp430-elf/8.3.1/430{{/|\\\\}}crtend_no_eh.o" "{{[^"]*}}libclang_rt.builtins-msp430.a"
+// LIBS-COMPILER-RT-POS: "{{[^"]*}}libclang_rt.builtins.a" "--start-group" "-lmul_none" "-lc" "{{[^"]*}}libclang_rt.builtins.a" "-lcrt" "-lnosys" "--end-group" "{{[^"]*}}libclang_rt.builtins.a"
+// LIBS-COMPILER-RT-POS: "{{.*}}/Inputs/basic_msp430_tree/lib/gcc/msp430-elf/8.3.1/430{{/|\\\\}}crtend_no_eh.o" "{{[^"]*}}libclang_rt.builtins.a"
 // LIBS-COMPILER-RT-NEG-NOT: crtbegin.o
 // LIBS-COMPILER-RT-NEG-NOT: -lssp_nonshared
 // LIBS-COMPILER-RT-NEG-NOT: -lssp

diff --git a/clang/test/Driver/print-libgcc-file-name-clangrt.c b/clang/test/Driver/print-libgcc-file-name-clangrt.c
@@ -5,14 +5,14 @@
 // RUN:     --sysroot=%S/Inputs/resource_dir_with_arch_subdir \
 // RUN:     -resource-dir=%S/Inputs/resource_dir_with_arch_subdir 2>&1 \
 // RUN:   | FileCheck --check-prefix=CHECK-CLANGRT-X8664 %s
-// CHECK-CLANGRT-X8664: libclang_rt.builtins-x86_64.a
+// CHECK-CLANGRT-X8664: libclang_rt.builtins.a
 
 // RUN: %clang -rtlib=compiler-rt -print-libgcc-file-name \
 // RUN:     --target=i386-pc-linux \
 // RUN:     --sysroot=%S/Inputs/resource_dir_with_arch_subdir \
 // RUN:     -resource-dir=%S/Inputs/resource_dir_with_arch_subdir 2>&1 \
 // RUN:   | FileCheck --check-prefix=CHECK-CLANGRT-I386 %s
-// CHECK-CLANGRT-I386: libclang_rt.builtins-i386.a
+// CHECK-CLANGRT-I386: libclang_rt.builtins.a
 
 // Check whether alternate arch values map to the correct library.
 //
@@ -27,28 +27,28 @@
 // RUN:     --sysroot=%S/Inputs/resource_dir_with_arch_subdir \
 // RUN:     -resource-dir=%S/Inputs/resource_dir_with_arch_subdir 2>&1 \
 // RUN:   | FileCheck --check-prefix=CHECK-CLANGRT-ARM %s
-// CHECK-CLANGRT-ARM: libclang_rt.builtins-arm.a
+// CHECK-CLANGRT-ARM: libclang_rt.builtins.a
 
 // RUN: %clang -rtlib=compiler-rt -print-libgcc-file-name \
 // RUN:     --target=arm-linux-androideabi \
 // RUN:     --sysroot=%S/Inputs/resource_dir_with_arch_subdir \
 // RUN:     -resource-dir=%S/Inputs/resource_dir_with_arch_subdir 2>&1 \
 // RUN:   | FileCheck --check-prefix=CHECK-CLANGRT-ARM-ANDROID %s
-// CHECK-CLANGRT-ARM-ANDROID: libclang_rt.builtins-arm-android.a
+// CHECK-CLANGRT-ARM-ANDROID: libclang_rt.builtins.a
 
 // RUN: %clang -rtlib=compiler-rt -print-libgcc-file-name \
 // RUN:     --target=arm-linux-gnueabihf \
 // RUN:     --sysroot=%S/Inputs/resource_dir_with_arch_subdir \
 // RUN:     -resource-dir=%S/Inputs/resource_dir_with_arch_subdir 2>&1 \
 // RUN:   | FileCheck --check-prefix=CHECK-CLANGRT-ARMHF %s
-// CHECK-CLANGRT-ARMHF: libclang_rt.builtins-armhf.a
+// CHECK-CLANGRT-ARMHF: libclang_rt.builtins.a
 
 // RUN: %clang -rtlib=compiler-rt -print-libgcc-file-name \
 // RUN:     --target=arm-linux-gnueabi -mfloat-abi=hard \
 // RUN:     --sysroot=%S/Inputs/resource_dir_with_arch_subdir \
 // RUN:     -resource-dir=%S/Inputs/resource_dir_with_arch_subdir 2>&1 \
 // RUN:   | FileCheck --check-prefix=CHECK-CLANGRT-ARM-ABI %s
-// CHECK-CLANGRT-ARM-ABI: libclang_rt.builtins-armhf.a
+// CHECK-CLANGRT-ARM-ABI: libclang_rt.builtins.a
 
 // RUN: %clang -rtlib=compiler-rt -print-libgcc-file-name \
 // RUN:     --target=armv7m-none-eabi \

diff --git a/clang/test/Driver/print-runtime-dir.c b/clang/test/Driver/print-runtime-dir.c
@@ -1,9 +1,3 @@
-// Default directory layout
-// RUN: %clang -print-runtime-dir --target=x86_64-pc-windows-msvc \
-// RUN:   -resource-dir=%S/Inputs/resource_dir \
-// RUN:   | FileCheck --check-prefix=PRINT-RUNTIME-DIR -DFILE=%S/Inputs/resource_dir %s
-// PRINT-RUNTIME-DIR: [[FILE]]{{/|\\}}lib{{/|\\}}windows
-
 // Per-target directory layout
 // RUN: %clang -print-runtime-dir --target=x86_64-pc-windows-msvc \
 // RUN:   -resource-dir=%S/Inputs/resource_dir_with_per_target_subdir \

diff --git a/clang/test/Driver/riscv32-toolchain-extra.c b/clang/test/Driver/riscv32-toolchain-extra.c
@@ -29,8 +29,8 @@
 // C-RV32-BAREMETAL-ILP32-NOGCC: "-internal-isystem" "{{.*}}/riscv32-nogcc/bin/../riscv32-unknown-elf/include"
 // C-RV32-BAREMETAL-ILP32-NOGCC: "{{.*}}/riscv32-nogcc/bin/riscv32-unknown-elf-ld"
 // C-RV32-BAREMETAL-ILP32-NOGCC: "{{.*}}/riscv32-nogcc/bin/../riscv32-unknown-elf/lib/crt0.o"
-// C-RV32-BAREMETAL-ILP32-NOGCC: "{{.*}}/riscv32-nogcc/{{.*}}/lib/clang_rt.crtbegin-riscv32.o"
+// C-RV32-BAREMETAL-ILP32-NOGCC: "{{.*}}/riscv32-nogcc/{{.*}}/riscv32-unknown-unknown-elf/clang_rt.crtbegin.o"
 // C-RV32-BAREMETAL-ILP32-NOGCC: "{{.*}}/riscv32-nogcc/bin/../riscv32-unknown-elf/lib"
 // C-RV32-BAREMETAL-ILP32-NOGCC: "--start-group" "-lc" "-lgloss" "--end-group"
-// C-RV32-BAREMETAL-ILP32-NOGCC: "{{.*}}/riscv32-nogcc/{{.*}}/lib/libclang_rt.builtins-riscv32.a"
-// C-RV32-BAREMETAL-ILP32-NOGCC: "{{.*}}/riscv32-nogcc/{{.*}}/lib/clang_rt.crtend-riscv32.o"
+// C-RV32-BAREMETAL-ILP32-NOGCC: "{{.*}}/riscv32-nogcc/{{.*}}/riscv32-unknown-unknown-elf/libclang_rt.builtins.a"
+// C-RV32-BAREMETAL-ILP32-NOGCC: "{{.*}}/riscv32-nogcc/{{.*}}/riscv32-unknown-unknown-elf/clang_rt.crtend.o"
diff --git a/clang/test/Driver/riscv32-toolchain.c b/clang/test/Driver/riscv32-toolchain.c
@@ -195,9 +195,9 @@
 // RUN:   --target=riscv32-unknown-elf --rtlib=compiler-rt --unwindlib=compiler-rt 2>&1 \
 // RUN:   | FileCheck -check-prefix=C-RV32-RTLIB-COMPILERRT-ILP32 %s
 // C-RV32-RTLIB-COMPILERRT-ILP32: "{{.*}}crt0.o"
-// C-RV32-RTLIB-COMPILERRT-ILP32: "{{.*}}clang_rt.crtbegin-riscv32.o"
-// C-RV32-RTLIB-COMPILERRT-ILP32: "--start-group" "-lc" "-lgloss" "--end-group" "{{.*}}libclang_rt.builtins-riscv32.a"
-// C-RV32-RTLIB-COMPILERRT-ILP32: "{{.*}}clang_rt.crtend-riscv32.o"
+// C-RV32-RTLIB-COMPILERRT-ILP32: "{{.*}}clang_rt.crtbegin.o"
+// C-RV32-RTLIB-COMPILERRT-ILP32: "--start-group" "-lc" "-lgloss" "--end-group" "{{.*}}libclang_rt.builtins.a"
+// C-RV32-RTLIB-COMPILERRT-ILP32: "{{.*}}clang_rt.crtend.o"
 
 // RUN: %clang -### %s --target=riscv32 \
 // RUN:   --gcc-toolchain=%S/Inputs/basic_riscv32_tree --sysroot= \

diff --git a/clang/test/Driver/riscv64-toolchain-extra.c b/clang/test/Driver/riscv64-toolchain-extra.c
@@ -29,8 +29,8 @@
 // C-RV64-BAREMETAL-LP64-NOGCC: "-internal-isystem" "{{.*}}/riscv64-nogcc/bin/../riscv64-unknown-elf/include"
 // C-RV64-BAREMETAL-LP64-NOGCC: "{{.*}}/riscv64-nogcc/bin/riscv64-unknown-elf-ld"
 // C-RV64-BAREMETAL-LP64-NOGCC: "{{.*}}/riscv64-nogcc/bin/../riscv64-unknown-elf/lib/crt0.o"
-// C-RV64-BAREMETAL-LP64-NOGCC: "{{.*}}/riscv64-nogcc/{{.*}}/lib/clang_rt.crtbegin-riscv64.o"
+// C-RV64-BAREMETAL-LP64-NOGCC: "{{.*}}/riscv64-nogcc/{{.*}}/riscv64-unknown-unknown-elf/clang_rt.crtbegin.o"
 // C-RV64-BAREMETAL-LP64-NOGCC: "{{.*}}/riscv64-nogcc/bin/../riscv64-unknown-elf/lib"
 // C-RV64-BAREMETAL-LP64-NOGCC: "--start-group" "-lc" "-lgloss" "--end-group"
-// C-RV64-BAREMETAL-LP64-NOGCC: "{{.*}}/riscv64-nogcc/{{.*}}/lib/libclang_rt.builtins-riscv64.a"
-// C-RV64-BAREMETAL-LP64-NOGCC: "{{.*}}/riscv64-nogcc/{{.*}}/lib/clang_rt.crtend-riscv64.o"
+// C-RV64-BAREMETAL-LP64-NOGCC: "{{.*}}/riscv64-nogcc/{{.*}}/riscv64-unknown-unknown-elf/libclang_rt.builtins.a"
+// C-RV64-BAREMETAL-LP64-NOGCC: "{{.*}}/riscv64-nogcc/{{.*}}/riscv64-unknown-unknown-elf/clang_rt.crtend.o"
diff --git a/clang/test/Driver/riscv64-toolchain.c b/clang/test/Driver/riscv64-toolchain.c
@@ -151,9 +151,9 @@
 // RUN:   --target=riscv64-unknown-elf --rtlib=compiler-rt --unwindlib=compiler-rt 2>&1 \
 // RUN:   | FileCheck -check-prefix=C-RV64-RTLIB-COMPILERRT-LP64 %s
 // C-RV64-RTLIB-COMPILERRT-LP64: "{{.*}}crt0.o"
-// C-RV64-RTLIB-COMPILERRT-LP64: "{{.*}}clang_rt.crtbegin-riscv64.o"
-// C-RV64-RTLIB-COMPILERRT-LP64: "--start-group" "-lc" "-lgloss" "--end-group" "{{.*}}libclang_rt.builtins-riscv64.a"
-// C-RV64-RTLIB-COMPILERRT-LP64: "{{.*}}clang_rt.crtend-riscv64.o"
+// C-RV64-RTLIB-COMPILERRT-LP64: "{{.*}}clang_rt.crtbegin.o"
+// C-RV64-RTLIB-COMPILERRT-LP64: "--start-group" "-lc" "-lgloss" "--end-group" "{{.*}}libclang_rt.builtins.a"
+// C-RV64-RTLIB-COMPILERRT-LP64: "{{.*}}clang_rt.crtend.o"
 
 // RUN: %clang -### %s --target=riscv64 \
 // RUN:   --gcc-toolchain=%S/Inputs/basic_riscv64_tree --sysroot= \

diff --git a/clang/test/Driver/sanitizer-ld.c b/clang/test/Driver/sanitizer-ld.c
@@ -111,7 +111,7 @@
 // CHECK-ASAN-FREEBSD: "{{(.*[^-.0-9A-Z_a-z])?}}ld{{(.exe)?}}"
 // CHECK-ASAN-FREEBSD-NOT: "-lc"
 // CHECK-ASAN-FREEBSD-NOT: libclang_rt.asan_cxx
-// CHECK-ASAN-FREEBSD: freebsd{{/|\\+}}libclang_rt.asan-i386.a"
+// CHECK-ASAN-FREEBSD: freebsd{{/|\\+}}libclang_rt.asan.a"
 // CHECK-ASAN-FREEBSD-NOT: libclang_rt.asan_cxx
 // CHECK-ASAN-FREEBSD-NOT: "--dynamic-list"
 // CHECK-ASAN-FREEBSD: "--export-dynamic"
@@ -135,8 +135,8 @@
 //
 // CHECK-ASAN-LINUX-CXX: "{{(.*[^-.0-9A-Z_a-z])?}}ld{{(.exe)?}}"
 // CHECK-ASAN-LINUX-CXX-NOT: "-lc"
-// CHECK-ASAN-LINUX-CXX: "--whole-archive" "{{.*}}libclang_rt.asan-i386.a" "--no-whole-archive"
-// CHECK-ASAN-LINUX-CXX: "--whole-archive" "{{.*}}libclang_rt.asan_cxx-i386.a" "--no-whole-archive"
+// CHECK-ASAN-LINUX-CXX: "--whole-archive" "{{.*}}libclang_rt.asan.a" "--no-whole-archive"
+// CHECK-ASAN-LINUX-CXX: "--whole-archive" "{{.*}}libclang_rt.asan_cxx.a" "--no-whole-archive"
 // CHECK-ASAN-LINUX-CXX-NOT: "--dynamic-list"
 // CHECK-ASAN-LINUX-CXX: "--export-dynamic"
 // CHECK-ASAN-LINUX-CXX: stdc++
@@ -163,7 +163,7 @@
 //
 // CHECK-ASAN-ARM: "{{(.*[^.0-9A-Z_a-z])?}}ld{{(.exe)?}}"
 // CHECK-ASAN-ARM-NOT: "-lc"
-// CHECK-ASAN-ARM: libclang_rt.asan-arm.a"
+// CHECK-ASAN-ARM: libclang_rt.asan.a"
 //
 // RUN: %clang -### %s 2>&1 \
 // RUN:     --target=armv7l-linux-gnueabi -fuse-ld=ld -fsanitize=address \
@@ -172,7 +172,7 @@
 //
 // CHECK-ASAN-ARMv7: "{{(.*[^.0-9A-Z_a-z])?}}ld{{(.exe)?}}"
 // CHECK-ASAN-ARMv7-NOT: "-lc"
-// CHECK-ASAN-ARMv7: libclang_rt.asan-arm.a"
+// CHECK-ASAN-ARMv7: libclang_rt.asan.a"
 
 // RUN: %clang -### %s 2>&1 \
 // RUN:     --target=arm-linux-androideabi -fuse-ld=ld -fsanitize=address \
@@ -184,7 +184,7 @@
 // CHECK-ASAN-ANDROID-NOT: "-lc"
 // CHECK-ASAN-ANDROID-NOT: "-lpthread"
 // CHECK-ASAN-ANDROID-NOT: "-lresolv"
-// CHECK-ASAN-ANDROID: libclang_rt.asan-arm-android.so"
+// CHECK-ASAN-ANDROID: libclang_rt.asan.so"
 // CHECK-ASAN-ANDROID-NOT: "-lpthread"
 // CHECK-ASAN-ANDROID-NOT: "-lresolv"
 
@@ -195,7 +195,7 @@
 // RUN:   | FileCheck --check-prefix=CHECK-ASAN-ANDROID-STATICLIBASAN %s
 //
 // CHECK-ASAN-ANDROID-STATICLIBASAN: "{{(.*[^.0-9A-Z_a-z])?}}ld.lld{{(.exe)?}}"
-// CHECK-ASAN-ANDROID-STATICLIBASAN: libclang_rt.asan-arm-android.a"
+// CHECK-ASAN-ANDROID-STATICLIBASAN: libclang_rt.asan.a"
 // CHECK-ASAN-ANDROID-STATICLIBASAN-NOT: "-lpthread"
 // CHECK-ASAN-ANDROID-STATICLIBASAN-NOT: "-lrt"
 // CHECK-ASAN-ANDROID-STATICLIBASAN-NOT: "-lresolv"
@@ -210,7 +210,7 @@
 // CHECK-UBSAN-ANDROID-NOT: "-lc"
 // CHECK-UBSAN-ANDROID-NOT: "-lpthread"
 // CHECK-UBSAN-ANDROID-NOT: "-lresolv"
-// CHECK-UBSAN-ANDROID: libclang_rt.ubsan_standalone-arm-android.so"
+// CHECK-UBSAN-ANDROID: libclang_rt.ubsan_standalone.so"
 // CHECK-UBSAN-ANDROID-NOT: "-lpthread"
 // CHECK-UBSAN-ANDROID-NOT: "-lresolv"
 
@@ -221,7 +221,7 @@
 // RUN:   | FileCheck --check-prefix=CHECK-UBSAN-ANDROID-STATICLIBASAN %s
 //
 // CHECK-UBSAN-ANDROID-STATICLIBASAN: "{{(.*[^.0-9A-Z_a-z])?}}ld.lld{{(.exe)?}}"
-// CHECK-UBSAN-ANDROID-STATICLIBASAN: libclang_rt.ubsan_standalone-arm-android.a"
+// CHECK-UBSAN-ANDROID-STATICLIBASAN: libclang_rt.ubsan_standalone.a"
 // CHECK-UBSAN-ANDROID-STATICLIBASAN-NOT: "-lpthread"
 // CHECK-UBSAN-ANDROID-STATICLIBASAN-NOT: "-lrt"
 // CHECK-UBSAN-ANDROID-STATICLIBASAN-NOT: "-lresolv"
@@ -237,7 +237,7 @@
 // CHECK-ASAN-ANDROID-X86-NOT: "-lc"
 // CHECK-ASAN-ANDROID-X86-NOT: "-lpthread"
 // CHECK-ASAN-ANDROID-X86-NOT: "-lresolv"
-// CHECK-ASAN-ANDROID-X86: libclang_rt.asan-i686-android.so"
+// CHECK-ASAN-ANDROID-X86: libclang_rt.asan.so"
 // CHECK-ASAN-ANDROID-X86-NOT: "-lpthread"
 // CHECK-ASAN-ANDROID-X86-NOT: "-lresolv"
 //
@@ -257,7 +257,7 @@
 //
 // CHECK-ASAN-ANDROID-SHARED: "{{(.*[^.0-9A-Z_a-z])?}}ld.lld{{(.exe)?}}"
 // CHECK-ASAN-ANDROID-SHARED-NOT: "-lc"
-// CHECK-ASAN-ANDROID-SHARED: libclang_rt.asan-arm-android.so"
+// CHECK-ASAN-ANDROID-SHARED: libclang_rt.asan.so"
 // CHECK-ASAN-ANDROID-SHARED-NOT: "-lpthread"
 // CHECK-ASAN-ANDROID-SHARED-NOT: "-lresolv"
 
@@ -347,7 +347,7 @@
 // CHECK-UBSAN-LINUX: "{{.*}}ld{{(.exe)?}}"
 // CHECK-UBSAN-LINUX-NOT: libclang_rt.asan
 // CHECK-UBSAN-LINUX-NOT: libclang_rt.ubsan_standalone_cxx
-// CHECK-UBSAN-LINUX: "--whole-archive" "{{.*}}libclang_rt.ubsan_standalone-x32.a" "--no-whole-archive"
+// CHECK-UBSAN-LINUX: "--whole-archive" "{{.*}}libclang_rt.ubsan_standalone.a" "--no-whole-archive"
 // CHECK-UBSAN-LINUX-NOT: libclang_rt.asan
 // CHECK-UBSAN-LINUX-NOT: libclang_rt.ubsan_standalone_cxx
 // CHECK-UBSAN-LINUX-NOT: "-lstdc++"
@@ -678,7 +678,7 @@
 // RUN:     --sysroot=%S/Inputs/basic_android_tree \
 // RUN:   | FileCheck --check-prefix=CHECK-CFI-CROSS-DSO-DIAG-ANDROID %s
 // CHECK-CFI-CROSS-DSO-DIAG-ANDROID: "{{.*}}ld{{(.exe)?}}"
-// CHECK-CFI-CROSS-DSO-DIAG-ANDROID: "{{[^"]*}}libclang_rt.ubsan_standalone-aarch64-android.so"
+// CHECK-CFI-CROSS-DSO-DIAG-ANDROID: "{{[^"]*}}libclang_rt.ubsan_standalone.so"
 // CHECK-CFI-CROSS-DSO-DIAG-ANDROID: "--export-dynamic-symbol=__cfi_check"
 
 // RUN: %clangxx -fsanitize=address -### %s 2>&1 \
@@ -929,7 +929,7 @@
 // CHECK-SCUDO-ANDROID: "-pie"
 // CHECK-SCUDO-ANDROID-NOT: "-lpthread"
 // CHECK-SCUDO-ANDROID-NOT: "-lresolv"
-// CHECK-SCUDO-ANDROID: libclang_rt.scudo_standalone-arm-android.so"
+// CHECK-SCUDO-ANDROID: libclang_rt.scudo_standalone.so"
 // CHECK-SCUDO-ANDROID-NOT: "-lpthread"
 // CHECK-SCUDO-ANDROID-NOT: "-lresolv"
 
@@ -940,7 +940,7 @@
 // RUN:   | FileCheck --check-prefix=CHECK-SCUDO-ANDROID-STATIC %s
 // CHECK-SCUDO-ANDROID-STATIC: "{{(.*[^.0-9A-Z_a-z])?}}ld.lld{{(.exe)?}}"
 // CHECK-SCUDO-ANDROID-STATIC: "-pie"
-// CHECK-SCUDO-ANDROID-STATIC: "--whole-archive" "{{.*}}libclang_rt.scudo_standalone-arm-android.a" "--no-whole-archive"
+// CHECK-SCUDO-ANDROID-STATIC: "--whole-archive" "{{.*}}libclang_rt.scudo_standalone.a" "--no-whole-archive"
 // CHECK-SCUDO-ANDROID-STATIC-NOT: "-lstdc++"
 // CHECK-SCUDO-ANDROID-STATIC-NOT: "-lpthread"
 // CHECK-SCUDO-ANDROID-STATIC-NOT: "-lrt"

diff --git a/clang/test/Driver/wasm-toolchain.c b/clang/test/Driver/wasm-toolchain.c
@@ -17,42 +17,42 @@
 // RUN: %clang -### --target=wasm32-unknown-unknown --sysroot=/foo %s 2>&1 \
 // RUN:   | FileCheck -check-prefix=LINK %s
 // LINK: "-cc1" {{.*}} "-o" "[[temp:[^"]*]]"
-// LINK: wasm-ld{{.*}}" "-L/foo/lib" "crt1.o" "[[temp]]" "-lc" "{{.*[/\\]}}libclang_rt.builtins-wasm32.a" "-o" "a.out"
+// LINK: wasm-ld{{.*}}" "-L/foo/lib" "crt1.o" "[[temp]]" "-lc" "{{.*[/\\]}}libclang_rt.builtins.a" "-o" "a.out"
 
 // A basic C link command-line with optimization with unknown OS.
 
 // RUN: %clang -### -O2 --target=wasm32-unknown-unknown --sysroot=/foo %s 2>&1 \
 // RUN:   | FileCheck -check-prefix=LINK_OPT %s
 // LINK_OPT: "-cc1" {{.*}} "-o" "[[temp:[^"]*]]"
-// LINK_OPT: wasm-ld{{.*}}" "-L/foo/lib" "crt1.o" "[[temp]]" "-lc" "{{.*[/\\]}}libclang_rt.builtins-wasm32.a" "-o" "a.out"
+// LINK_OPT: wasm-ld{{.*}}" "-L/foo/lib" "crt1.o" "[[temp]]" "-lc" "{{.*[/\\]}}libclang_rt.builtins.a" "-o" "a.out"
 
 // A basic C link command-line with known OS.
 
 // RUN: %clang -### --target=wasm32-wasi --sysroot=/foo %s 2>&1 \
 // RUN:   | FileCheck -check-prefix=LINK_KNOWN %s
 // LINK_KNOWN: "-cc1" {{.*}} "-o" "[[temp:[^"]*]]"
-// LINK_KNOWN: wasm-ld{{.*}}" "-L/foo/lib/wasm32-wasi" "crt1.o" "[[temp]]" "-lc" "{{.*[/\\]}}libclang_rt.builtins-wasm32.a" "-o" "a.out"
+// LINK_KNOWN: wasm-ld{{.*}}" "-L/foo/lib/wasm32-wasi" "crt1.o" "[[temp]]" "-lc" "{{.*[/\\]}}libclang_rt.builtins.a" "-o" "a.out"
 
 // -shared should be passed through to `wasm-ld` and include crt1-reactor.o with a known OS.
 
 // RUN: %clang -### -shared -mexec-model=reactor --target=wasm32-wasi --sysroot=/foo %s 2>&1 \
 // RUN:   | FileCheck -check-prefix=LINK_KNOWN_SHARED %s
 // LINK_KNOWN_SHARED: "-cc1" {{.*}} "-o" "[[temp:[^"]*]]"
-// LINK_KNOWN_SHARED: wasm-ld{{.*}}" "-L/foo/lib/wasm32-wasi" "crt1-reactor.o" "--entry" "_initialize" "-shared" "[[temp]]" "-lc" "{{.*[/\\]}}libclang_rt.builtins-wasm32.a" "-o" "a.out"
+// LINK_KNOWN_SHARED: wasm-ld{{.*}}" "-L/foo/lib/wasm32-wasi" "crt1-reactor.o" "--entry" "_initialize" "-shared" "[[temp]]" "-lc" "{{.*[/\\]}}libclang_rt.builtins.a" "-o" "a.out"
 
 // -shared should be passed through to `wasm-ld` and include crt1-reactor.o with an unknown OS.
 
 // RUN: %clang -### -shared -mexec-model=reactor --target=wasm32-unknown-unknown --sysroot=/foo %s 2>&1 \
 // RUN:   | FileCheck -check-prefix=LINK_UNKNOWN_SHARED %s
 // LINK_UNKNOWN_SHARED: "-cc1" {{.*}} "-o" "[[temp:[^"]*]]"
-// LINK_UNKNOWN_SHARED: wasm-ld{{.*}}" "crt1-reactor.o" "--entry" "_initialize" "-shared" "[[temp]]" "-lc" "{{.*[/\\]}}libclang_rt.builtins-wasm32.a" "-o" "a.out"
+// LINK_UNKNOWN_SHARED: wasm-ld{{.*}}" "crt1-reactor.o" "--entry" "_initialize" "-shared" "[[temp]]" "-lc" "{{.*[/\\]}}libclang_rt.builtins.a" "-o" "a.out"
 
 // A basic C link command-line with optimization with known OS.
 
 // RUN: %clang -### -O2 --target=wasm32-wasi --sysroot=/foo %s 2>&1 \
 // RUN:   | FileCheck -check-prefix=LINK_OPT_KNOWN %s
 // LINK_OPT_KNOWN: "-cc1" {{.*}} "-o" "[[temp:[^"]*]]"
-// LINK_OPT_KNOWN: wasm-ld{{.*}}" "-L/foo/lib/wasm32-wasi" "crt1.o" "[[temp]]" "-lc" "{{.*[/\\]}}libclang_rt.builtins-wasm32.a" "-o" "a.out"
+// LINK_OPT_KNOWN: wasm-ld{{.*}}" "-L/foo/lib/wasm32-wasi" "crt1.o" "[[temp]]" "-lc" "{{.*[/\\]}}libclang_rt.builtins.a" "-o" "a.out"
 
 // A basic C compile command-line with known OS.
 
@@ -180,12 +180,12 @@
 // RUN: %clang -### %s --target=wasm32-unknown-unknown --sysroot=%s/no-sysroot-there -mexec-model=command 2>&1 \
 // RUN:   | FileCheck -check-prefix=CHECK-COMMAND %s
 // CHECK-COMMAND: "-cc1" {{.*}} "-o" "[[temp:[^"]*]]"
-// CHECK-COMMAND: wasm-ld{{.*}}" "crt1.o" "[[temp]]" "-lc" "{{.*[/\\]}}libclang_rt.builtins-wasm32.a" "-o" "a.out"
+// CHECK-COMMAND: wasm-ld{{.*}}" "crt1.o" "[[temp]]" "-lc" "{{.*[/\\]}}libclang_rt.builtins.a" "-o" "a.out"
 
 // RUN: %clang -### %s --target=wasm32-unknown-unknown --sysroot=%s/no-sysroot-there -mexec-model=reactor 2>&1 \
 // RUN:   | FileCheck -check-prefix=CHECK-REACTOR %s
 // CHECK-REACTOR: "-cc1" {{.*}} "-o" "[[temp:[^"]*]]"
-// CHECK-REACTOR: wasm-ld{{.*}}" "crt1-reactor.o" "--entry" "_initialize" "[[temp]]" "-lc" "{{.*[/\\]}}libclang_rt.builtins-wasm32.a" "-o" "a.out"
+// CHECK-REACTOR: wasm-ld{{.*}}" "crt1-reactor.o" "--entry" "_initialize" "[[temp]]" "-lc" "{{.*[/\\]}}libclang_rt.builtins.a" "-o" "a.out"
 
 // -fPIC implies +mutable-globals
 
@@ -204,7 +204,7 @@
 // RUN: %clang -### -O2 --target=wasm32-wasip2 %s --sysroot /foo 2>&1 \
 // RUN:   | FileCheck -check-prefix=LINK_WASIP2 %s
 // LINK_WASIP2: "-cc1" {{.*}} "-o" "[[temp:[^"]*]]"
-// LINK_WASIP2: wasm-component-ld{{.*}}" "-L/foo/lib/wasm32-wasip2" "crt1.o" "[[temp]]" "-lc" "{{.*[/\\]}}libclang_rt.builtins-wasm32.a" "-o" "a.out"
+// LINK_WASIP2: wasm-component-ld{{.*}}" "-L/foo/lib/wasm32-wasip2" "crt1.o" "[[temp]]" "-lc" "{{.*[/\\]}}libclang_rt.builtins.a" "-o" "a.out"
 
 // Test that on `wasm32-wasip2` the `wasm-component-ld` programs is told where
 // to find `wasm-ld` by default.

diff --git a/clang/test/Driver/wasm-toolchain.cpp b/clang/test/Driver/wasm-toolchain.cpp
@@ -17,48 +17,48 @@
 // RUN: %clangxx -### --target=wasm32-unknown-unknown --sysroot=/foo --stdlib=libc++ %s 2>&1 \
 // RUN:   | FileCheck -check-prefix=LINK %s
 // LINK: "-cc1" {{.*}} "-o" "[[temp:[^"]*]]"
-// LINK: wasm-ld{{.*}}" "-L/foo/lib" "crt1.o" "[[temp]]" "-lc++" "-lc++abi" "-lc" "{{.*[/\\]}}libclang_rt.builtins-wasm32.a" "-o" "a.out"
+// LINK: wasm-ld{{.*}}" "-L/foo/lib" "crt1.o" "[[temp]]" "-lc++" "-lc++abi" "-lc" "{{.*[/\\]}}libclang_rt.builtins.a" "-o" "a.out"
 
 // RUN: %clangxx -### --target=wasm32-unknown-unknown --sysroot=/foo --stdlib=libstdc++ %s 2>&1 \
 // RUN:   | FileCheck -check-prefix=LINK_STDCXX %s
 // LINK_STDCXX: "-cc1" {{.*}} "-o" "[[temp:[^"]*]]"
-// LINK_STDCXX: wasm-ld{{.*}}" "-L/foo/lib" "crt1.o" "[[temp]]" "-lstdc++" "-lc" "{{.*[/\\]}}libclang_rt.builtins-wasm32.a" "-o" "a.out"
+// LINK_STDCXX: wasm-ld{{.*}}" "-L/foo/lib" "crt1.o" "[[temp]]" "-lstdc++" "-lc" "{{.*[/\\]}}libclang_rt.builtins.a" "-o" "a.out"
 
 // A basic C++ link command-line with optimization with unknown OS.
 
 // RUN: %clangxx -### -O2 --target=wasm32-unknown-unknown --sysroot=/foo %s --stdlib=libc++ 2>&1 \
 // RUN:   | FileCheck -check-prefix=LINK_OPT %s
 // LINK_OPT: "-cc1" {{.*}} "-o" "[[temp:[^"]*]]"
-// LINK_OPT: wasm-ld{{.*}}" "-L/foo/lib" "crt1.o" "[[temp]]" "-lc++" "-lc++abi" "-lc" "{{.*[/\\]}}libclang_rt.builtins-wasm32.a" "-o" "a.out"
+// LINK_OPT: wasm-ld{{.*}}" "-L/foo/lib" "crt1.o" "[[temp]]" "-lc++" "-lc++abi" "-lc" "{{.*[/\\]}}libclang_rt.builtins.a" "-o" "a.out"
 
 // RUN: %clangxx -### -O2 --target=wasm32-unknown-unknown --sysroot=/foo %s --stdlib=libstdc++ 2>&1 \
 // RUN:   | FileCheck -check-prefix=LINK_OPT_STDCXX %s
 // LINK_OPT_STDCXX: "-cc1" {{.*}} "-o" "[[temp:[^"]*]]"
-// LINK_OPT_STDCXX: wasm-ld{{.*}}" "-L/foo/lib" "crt1.o" "[[temp]]" "-lstdc++" "-lc" "{{.*[/\\]}}libclang_rt.builtins-wasm32.a" "-o" "a.out"
+// LINK_OPT_STDCXX: wasm-ld{{.*}}" "-L/foo/lib" "crt1.o" "[[temp]]" "-lstdc++" "-lc" "{{.*[/\\]}}libclang_rt.builtins.a" "-o" "a.out"
 
 // A basic C++ link command-line with known OS.
 
 // RUN: %clangxx -### --target=wasm32-wasi --sysroot=/foo --stdlib=libc++ %s 2>&1 \
 // RUN:   | FileCheck -check-prefix=LINK_KNOWN %s
 // LINK_KNOWN: "-cc1" {{.*}} "-o" "[[temp:[^"]*]]"
-// LINK_KNOWN: wasm-ld{{.*}}" "-L/foo/lib/wasm32-wasi" "crt1.o" "[[temp]]" "-lc++" "-lc++abi" "-lc" "{{.*[/\\]}}libclang_rt.builtins-wasm32.a" "-o" "a.out"
+// LINK_KNOWN: wasm-ld{{.*}}" "-L/foo/lib/wasm32-wasi" "crt1.o" "[[temp]]" "-lc++" "-lc++abi" "-lc" "{{.*[/\\]}}libclang_rt.builtins.a" "-o" "a.out"
 
 // RUN: %clangxx -### --target=wasm32-wasi --sysroot=/foo --stdlib=libstdc++ %s 2>&1 \
 // RUN:   | FileCheck -check-prefix=LINK_KNOWN_STDCXX %s
 // LINK_KNOWN_STDCXX: "-cc1" {{.*}} "-o" "[[temp:[^"]*]]"
-// LINK_KNOWN_STDCXX: wasm-ld{{.*}}" "-L/foo/lib/wasm32-wasi" "crt1.o" "[[temp]]" "-lstdc++" "-lc" "{{.*[/\\]}}libclang_rt.builtins-wasm32.a" "-o" "a.out"
+// LINK_KNOWN_STDCXX: wasm-ld{{.*}}" "-L/foo/lib/wasm32-wasi" "crt1.o" "[[temp]]" "-lstdc++" "-lc" "{{.*[/\\]}}libclang_rt.builtins.a" "-o" "a.out"
 
 // A basic C++ link command-line with optimization with known OS.
 
 // RUN: %clangxx -### -O2 --target=wasm32-wasi --sysroot=/foo %s --stdlib=libc++ 2>&1 \
 // RUN:   | FileCheck -check-prefix=LINK_OPT_KNOWN %s
 // LINK_OPT_KNOWN: "-cc1" {{.*}} "-o" "[[temp:[^"]*]]"
-// LINK_OPT_KNOWN: wasm-ld{{.*}}" "-L/foo/lib/wasm32-wasi" "crt1.o" "[[temp]]" "-lc++" "-lc++abi" "-lc" "{{.*[/\\]}}libclang_rt.builtins-wasm32.a" "-o" "a.out"
+// LINK_OPT_KNOWN: wasm-ld{{.*}}" "-L/foo/lib/wasm32-wasi" "crt1.o" "[[temp]]" "-lc++" "-lc++abi" "-lc" "{{.*[/\\]}}libclang_rt.builtins.a" "-o" "a.out"
 
 // RUN: %clangxx -### -O2 --target=wasm32-wasi --sysroot=/foo %s --stdlib=libstdc++ 2>&1 \
 // RUN:   | FileCheck -check-prefix=LINK_OPT_KNOWN_STDCXX %s
 // LINK_OPT_KNOWN_STDCXX: "-cc1" {{.*}} "-o" "[[temp:[^"]*]]"
-// LINK_OPT_KNOWN_STDCXX: wasm-ld{{.*}}" "-L/foo/lib/wasm32-wasi" "crt1.o" "[[temp]]" "-lstdc++" "-lc" "{{.*[/\\]}}libclang_rt.builtins-wasm32.a" "-o" "a.out"
+// LINK_OPT_KNOWN_STDCXX: wasm-ld{{.*}}" "-L/foo/lib/wasm32-wasi" "crt1.o" "[[temp]]" "-lstdc++" "-lc" "{{.*[/\\]}}libclang_rt.builtins.a" "-o" "a.out"
 
 // A basic C++ compile command-line with known OS.
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, "");