Index: cfe/trunk/include/clang/Basic/BuiltinsWebAssembly.def
===================================================================
--- cfe/trunk/include/clang/Basic/BuiltinsWebAssembly.def
+++ cfe/trunk/include/clang/Basic/BuiltinsWebAssembly.def
@@ -0,0 +1,21 @@
+// BuiltinsWebAssembly.def - WebAssembly builtin function database -*- C++ -*-//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+///
+/// \file
+/// \brief This file defines the WebAssembly-specific builtin function database.
+/// Users of this file must define the BUILTIN macro to make use of this
+/// information.
+///
+//===----------------------------------------------------------------------===//
+
+// The format of this database matches clang/Basic/Builtins.def.
+
+BUILTIN(__builtin_wasm_page_size, "z", "nc")
+
+#undef BUILTIN
Index: cfe/trunk/include/clang/Basic/TargetBuiltins.h
===================================================================
--- cfe/trunk/include/clang/Basic/TargetBuiltins.h
+++ cfe/trunk/include/clang/Basic/TargetBuiltins.h
@@ -185,6 +185,17 @@
         LastTSBuiltin
     };
   }
+
+  /// \brief WebAssembly builtins
+  namespace WebAssembly {
+    enum {
+      LastTIBuiltin = clang::Builtin::FirstTSBuiltin-1,
+#define BUILTIN(ID, TYPE, ATTRS) BI##ID,
+#include "clang/Basic/BuiltinsWebAssembly.def"
+      LastTSBuiltin
+    };
+  }
+
 } // end namespace clang.
 
 #endif
Index: cfe/trunk/include/clang/Basic/TargetCXXABI.h
===================================================================
--- cfe/trunk/include/clang/Basic/TargetCXXABI.h
+++ cfe/trunk/include/clang/Basic/TargetCXXABI.h
@@ -85,6 +85,21 @@
     ///   - representation of member function pointers adjusted as in ARM.
     GenericMIPS,
 
+    /// The WebAssembly ABI is a modified version of the Itanium ABI.
+    ///
+    /// The changes from the Itanium ABI are:
+    ///   - representation of member function pointers is adjusted, as in ARM;
+    ///   - member functions are not specially aligned;
+    ///   - constructors and destructors return 'this', as in ARM;
+    ///   - guard variables are 32-bit on wasm32, as in ARM;
+    ///   - unused bits of guard variables are reserved, as in ARM;
+    ///   - inline functions are never key functions, as in ARM;
+    ///   - C++11 POD rules are used for tail padding, as in iOS64.
+    ///
+    /// TODO: At present the WebAssembly ABI is not considered stable, so none
+    /// of these details is necessarily final yet.
+    WebAssembly,
+
     /// The Microsoft ABI is the ABI used by Microsoft Visual Studio (and
     /// compatible compilers).
     ///
@@ -121,6 +136,7 @@
     case iOS:
     case iOS64:
     case GenericMIPS:
+    case WebAssembly:
       return true;
 
     case Microsoft:
@@ -138,6 +154,7 @@
     case iOS:
     case iOS64:
     case GenericMIPS:
+    case WebAssembly:
       return false;
 
     case Microsoft:
@@ -146,6 +163,35 @@
     llvm_unreachable("bad ABI kind");
   }
 
+  /// \brief Are member functions differently aligned?
+  ///
+  /// Many Itanium-style C++ ABIs require member functions to be aligned, so
+  /// that a pointer to such a function is guaranteed to have a zero in the
+  /// least significant bit, so that pointers to member functions can use that
+  /// bit to distinguish between virtual and non-virtual functions. However,
+  /// some Itanium-style C++ ABIs differentiate between virtual and non-virtual
+  /// functions via other means, and consequently don't require that member
+  /// functions be aligned.
+  bool areMemberFunctionsAligned() const {
+    switch (getKind()) {
+    case WebAssembly:
+      // WebAssembly doesn't require any special alignment for member functions.
+      return false;
+    case GenericARM:
+    case GenericAArch64:
+    case GenericMIPS:
+      // TODO: ARM-style pointers to member functions put the discriminator in
+      //       the this adjustment, so they don't require functions to have any
+      //       special alignment and could therefore also return false.
+    case GenericItanium:
+    case iOS:
+    case iOS64:
+    case Microsoft:
+      return true;
+    }
+    llvm_unreachable("bad ABI kind");
+  }
+
   /// \brief Is the default C++ member function calling convention
   /// the same as the default calling convention?
   bool isMemberFunctionCCDefault() const {
@@ -214,6 +260,7 @@
     switch (getKind()) {
     case GenericARM:
     case iOS64:
+    case WebAssembly:
       return false;
 
     case GenericAArch64:
@@ -261,7 +308,7 @@
     switch (getKind()) {
     // To preserve binary compatibility, the generic Itanium ABI has
     // permanently locked the definition of POD to the rules of C++ TR1,
-    // and that trickles down to all the derived ABIs.
+    // and that trickles down to derived ABIs.
     case GenericItanium:
     case GenericAArch64:
     case GenericARM:
@@ -269,9 +316,10 @@
     case GenericMIPS:
       return UseTailPaddingUnlessPOD03;
 
-    // iOS on ARM64 uses the C++11 POD rules.  It does not honor the
-    // Itanium exception about classes with over-large bitfields.
+    // iOS on ARM64 and WebAssembly use the C++11 POD rules.  They do not honor
+    // the Itanium exception about classes with over-large bitfields.
     case iOS64:
+    case WebAssembly:
       return UseTailPaddingUnlessPOD11;
 
     // MSVC always allocates fields in the tail-padding of a base class
Index: cfe/trunk/include/clang/Driver/Options.td
===================================================================
--- cfe/trunk/include/clang/Driver/Options.td
+++ cfe/trunk/include/clang/Driver/Options.td
@@ -80,6 +80,8 @@
 def m_arm_Features_Group  : OptionGroup<"<m arm features group>">, Group<m_Group>;
 def m_aarch64_Features_Group  : OptionGroup<"<m aarch64 features group>">, Group<m_Group>;
 def m_ppc_Features_Group  : OptionGroup<"<m ppc features group>">, Group<m_Group>;
+def m_wasm_Features_Group : OptionGroup<"<m wasm features group>">,
+                                        Group<m_Group>;
 def m_libc_Group          : OptionGroup<"<m libc group>">, Group<m_Group>;
 def u_Group               : OptionGroup<"<u group>">;
 
@@ -1334,6 +1336,9 @@
 def ffixed_x18 : Flag<["-"], "ffixed-x18">, Group<m_aarch64_Features_Group>,
   HelpText<"Reserve the x18 register (AArch64 only)">;
 
+def msimd128 : Flag<["-"], "msimd128">, Group<m_wasm_Features_Group>;
+def mno_simd128 : Flag<["-"], "mno-simd128">, Group<m_wasm_Features_Group>;
+
 def mvsx : Flag<["-"], "mvsx">, Group<m_ppc_Features_Group>;
 def mno_vsx : Flag<["-"], "mno-vsx">, Group<m_ppc_Features_Group>;
 def mpower8_vector : Flag<["-"], "mpower8-vector">,
Index: cfe/trunk/include/clang/module.modulemap
===================================================================
--- cfe/trunk/include/clang/module.modulemap
+++ cfe/trunk/include/clang/module.modulemap
@@ -35,6 +35,7 @@
   textual header "Basic/BuiltinsPPC.def"
   textual header "Basic/BuiltinsR600.def"
   textual header "Basic/BuiltinsSystemZ.def"
+  textual header "Basic/BuiltinsWebAssembly.def"
   textual header "Basic/BuiltinsX86.def"
   textual header "Basic/BuiltinsXCore.def"
   textual header "Basic/DiagnosticOptions.def"
Index: cfe/trunk/lib/AST/ASTContext.cpp
===================================================================
--- cfe/trunk/lib/AST/ASTContext.cpp
+++ cfe/trunk/lib/AST/ASTContext.cpp
@@ -684,6 +684,7 @@
   case TargetCXXABI::GenericAArch64:
   case TargetCXXABI::GenericMIPS:
   case TargetCXXABI::GenericItanium:
+  case TargetCXXABI::WebAssembly:
     return CreateItaniumCXXABI(*this);
   case TargetCXXABI::Microsoft:
     return CreateMicrosoftCXXABI(*this);
@@ -8431,6 +8432,7 @@
   case TargetCXXABI::GenericMIPS:
   case TargetCXXABI::iOS:
   case TargetCXXABI::iOS64:
+  case TargetCXXABI::WebAssembly:
     return ItaniumMangleContext::create(*this, getDiagnostics());
   case TargetCXXABI::Microsoft:
     return MicrosoftMangleContext::create(*this, getDiagnostics());
Index: cfe/trunk/lib/Basic/Targets.cpp
===================================================================
--- cfe/trunk/lib/Basic/Targets.cpp
+++ cfe/trunk/lib/Basic/Targets.cpp
@@ -734,6 +734,35 @@
   }
 };
 
+namespace {
+// WebAssembly target
+template <typename Target>
+class WebAssemblyOSTargetInfo : public OSTargetInfo<Target> {
+  void getOSDefines(const LangOptions &Opts, const llvm::Triple &Triple,
+                    MacroBuilder &Builder) const override final {
+    // A common platform macro.
+    if (Opts.POSIXThreads)
+      Builder.defineMacro("_REENTRANT");
+    // Follow g++ convention and predefine _GNU_SOURCE for C++.
+    if (Opts.CPlusPlus)
+      Builder.defineMacro("_GNU_SOURCE");
+  }
+
+  // As an optimization, group static init code together in a section.
+  const char *getStaticInitSectionSpecifier() const override final {
+    return ".text.__startup";
+  }
+
+public:
+  explicit WebAssemblyOSTargetInfo(const llvm::Triple &Triple)
+      : OSTargetInfo<Target>(Triple) {
+    this->MCountName = "__mcount";
+    this->UserLabelPrefix = "";
+    this->TheCXXABI.set(TargetCXXABI::WebAssembly);
+  }
+};
+} // end anonymous namespace
+
 //===----------------------------------------------------------------------===//
 // Specific target implementations.
 //===----------------------------------------------------------------------===//
@@ -6955,6 +6984,145 @@
 
   bool hasProtectedVisibility() const override { return false; }
 };
+
+class WebAssemblyTargetInfo : public TargetInfo {
+  static const Builtin::Info BuiltinInfo[];
+
+  enum SIMDEnum {
+    NoSIMD,
+    SIMD128,
+  } SIMDLevel;
+
+public:
+  explicit WebAssemblyTargetInfo(const llvm::Triple &T)
+      : TargetInfo(T), SIMDLevel(NoSIMD) {
+    BigEndian = false;
+    NoAsmVariants = true;
+    SuitableAlign = 128;
+    LargeArrayMinWidth = 128;
+    LargeArrayAlign = 128;
+    SimdDefaultAlign = 128;
+  }
+
+protected:
+  void getTargetDefines(const LangOptions &Opts,
+                        MacroBuilder &Builder) const override {
+    defineCPUMacros(Builder, "wasm", /*Tuning=*/false);
+    if (SIMDLevel >= SIMD128)
+      Builder.defineMacro("__wasm_simd128__");
+  }
+
+private:
+  bool initFeatureMap(llvm::StringMap<bool> &Features, DiagnosticsEngine &Diags,
+                      StringRef CPU,
+                      std::vector<std::string> &FeaturesVec) const override {
+    if (CPU == "bleeding-edge")
+      Features["simd128"] = true;
+    return TargetInfo::initFeatureMap(Features, Diags, CPU, FeaturesVec);
+  }
+  bool hasFeature(StringRef Feature) const override final {
+    return llvm::StringSwitch<bool>(Feature)
+        .Case("simd128", SIMDLevel >= SIMD128)
+        .Default(false);
+  }
+  bool handleTargetFeatures(std::vector<std::string> &Features,
+                            DiagnosticsEngine &Diags) override final {
+    for (const auto &Feature : Features) {
+      if (Feature == "+simd128") {
+        SIMDLevel = std::max(SIMDLevel, SIMD128);
+        continue;
+      }
+      if (Feature == "-simd128") {
+        SIMDLevel = std::min(SIMDLevel, SIMDEnum(SIMD128 - 1));
+        continue;
+      }
+
+      Diags.Report(diag::err_opt_not_valid_with_opt) << Feature
+                                                     << "-target-feature";
+      return false;
+    }
+    return true;
+  }
+  bool setCPU(const std::string &Name) override final {
+    return llvm::StringSwitch<bool>(Name)
+              .Case("mvp",           true)
+              .Case("bleeding-edge", true)
+              .Case("generic",       true)
+              .Default(false);
+  }
+  void getTargetBuiltins(const Builtin::Info *&Records,
+                         unsigned &NumRecords) const override final {
+    Records = BuiltinInfo;
+    NumRecords = clang::WebAssembly::LastTSBuiltin - Builtin::FirstTSBuiltin;
+  }
+  BuiltinVaListKind getBuiltinVaListKind() const override final {
+    // TODO: Implement va_list properly.
+    return VoidPtrBuiltinVaList;
+  }
+  void getGCCRegNames(const char *const *&Names,
+                      unsigned &NumNames) const override final {
+    Names = nullptr;
+    NumNames = 0;
+  }
+  void getGCCRegAliases(const GCCRegAlias *&Aliases,
+                        unsigned &NumAliases) const override final {
+    Aliases = nullptr;
+    NumAliases = 0;
+  }
+  bool
+  validateAsmConstraint(const char *&Name,
+                        TargetInfo::ConstraintInfo &Info) const override final {
+    return false;
+  }
+  const char *getClobbers() const override final { return ""; }
+  bool isCLZForZeroUndef() const override final { return false; }
+  bool hasInt128Type() const override final { return true; }
+};
+
+const Builtin::Info WebAssemblyTargetInfo::BuiltinInfo[] = {
+#define BUILTIN(ID, TYPE, ATTRS) \
+  { #ID, TYPE, ATTRS, nullptr, ALL_LANGUAGES, nullptr },
+#define LIBBUILTIN(ID, TYPE, ATTRS, HEADER) \
+  { #ID, TYPE, ATTRS, HEADER, ALL_LANGUAGES, nullptr },
+#include "clang/Basic/BuiltinsWebAssembly.def"
+};
+
+class WebAssembly32TargetInfo : public WebAssemblyTargetInfo {
+public:
+  explicit WebAssembly32TargetInfo(const llvm::Triple &T)
+      : WebAssemblyTargetInfo(T) {
+    // TODO: Set this to the correct value once the spec issues are resolved.
+    MaxAtomicPromoteWidth = MaxAtomicInlineWidth = 0;
+    DataLayoutString = "e-p:32:32-i64:64-n32:64-S128";
+  }
+
+protected:
+  void getTargetDefines(const LangOptions &Opts,
+                        MacroBuilder &Builder) const override {
+    WebAssemblyTargetInfo::getTargetDefines(Opts, Builder);
+    defineCPUMacros(Builder, "wasm32", /*Tuning=*/false);
+  }
+};
+
+class WebAssembly64TargetInfo : public WebAssemblyTargetInfo {
+public:
+  explicit WebAssembly64TargetInfo(const llvm::Triple &T)
+      : WebAssemblyTargetInfo(T) {
+    LongAlign = LongWidth = 64;
+    PointerAlign = PointerWidth = 64;
+    // TODO: Set this to the correct value once the spec issues are resolved.
+    MaxAtomicPromoteWidth = MaxAtomicInlineWidth = 0;
+    DataLayoutString = "e-p:64:64-i64:64-n32:64-S128";
+  }
+
+protected:
+  void getTargetDefines(const LangOptions &Opts,
+                        MacroBuilder &Builder) const override {
+    WebAssemblyTargetInfo::getTargetDefines(Opts, Builder);
+    defineCPUMacros(Builder, "wasm64", /*Tuning=*/false);
+  }
+};
+
 } // end anonymous namespace.
 
 const Builtin::Info Le64TargetInfo::BuiltinInfo[] = {
@@ -7559,6 +7727,14 @@
       return nullptr;
     return new SPIR64TargetInfo(Triple);
   }
+  case llvm::Triple::wasm32:
+    if (!(Triple == llvm::Triple("wasm32-unknown-unknown")))
+      return nullptr;
+    return new WebAssemblyOSTargetInfo<WebAssembly32TargetInfo>(Triple);
+  case llvm::Triple::wasm64:
+    if (!(Triple == llvm::Triple("wasm64-unknown-unknown")))
+      return nullptr;
+    return new WebAssemblyOSTargetInfo<WebAssembly64TargetInfo>(Triple);
   }
 }
 
Index: cfe/trunk/lib/CodeGen/CGBuiltin.cpp
===================================================================
--- cfe/trunk/lib/CodeGen/CGBuiltin.cpp
+++ cfe/trunk/lib/CodeGen/CGBuiltin.cpp
@@ -1888,6 +1888,9 @@
   case llvm::Triple::nvptx:
   case llvm::Triple::nvptx64:
     return EmitNVPTXBuiltinExpr(BuiltinID, E);
+  case llvm::Triple::wasm32:
+  case llvm::Triple::wasm64:
+    return EmitWebAssemblyBuiltinExpr(BuiltinID, E);
   default:
     return nullptr;
   }
@@ -7032,3 +7035,17 @@
     return nullptr;
   }
 }
+
+Value *CodeGenFunction::EmitWebAssemblyBuiltinExpr(unsigned BuiltinID,
+                                                   const CallExpr *E) {
+  switch (BuiltinID) {
+  case WebAssembly::BI__builtin_wasm_page_size: {
+    llvm::Type *ResultType = ConvertType(E->getType());
+    Value *Callee = CGM.getIntrinsic(Intrinsic::wasm_page_size, ResultType);
+    return Builder.CreateCall(Callee);
+  }
+
+  default:
+    return nullptr;
+  }
+}
Index: cfe/trunk/lib/CodeGen/CodeGenFunction.h
===================================================================
--- cfe/trunk/lib/CodeGen/CodeGenFunction.h
+++ cfe/trunk/lib/CodeGen/CodeGenFunction.h
@@ -2626,6 +2626,8 @@
   llvm::Value *EmitAMDGPUBuiltinExpr(unsigned BuiltinID, const CallExpr *E);
   llvm::Value *EmitSystemZBuiltinExpr(unsigned BuiltinID, const CallExpr *E);
   llvm::Value *EmitNVPTXBuiltinExpr(unsigned BuiltinID, const CallExpr *E);
+  llvm::Value *EmitWebAssemblyBuiltinExpr(unsigned BuiltinID,
+                                          const CallExpr *E);
 
   llvm::Value *EmitObjCProtocolExpr(const ObjCProtocolExpr *E);
   llvm::Value *EmitObjCStringLiteral(const ObjCStringLiteral *E);
Index: cfe/trunk/lib/CodeGen/CodeGenModule.cpp
===================================================================
--- cfe/trunk/lib/CodeGen/CodeGenModule.cpp
+++ cfe/trunk/lib/CodeGen/CodeGenModule.cpp
@@ -66,6 +66,7 @@
   case TargetCXXABI::iOS64:
   case TargetCXXABI::GenericMIPS:
   case TargetCXXABI::GenericItanium:
+  case TargetCXXABI::WebAssembly:
     return CreateItaniumCXXABI(CGM);
   case TargetCXXABI::Microsoft:
     return CreateMicrosoftCXXABI(CGM);
@@ -819,9 +820,14 @@
   if (alignment)
     F->setAlignment(alignment);
 
-  // C++ ABI requires 2-byte alignment for member functions.
-  if (F->getAlignment() < 2 && isa<CXXMethodDecl>(D))
-    F->setAlignment(2);
+  // Some C++ ABIs require 2-byte alignment for member functions, in order to
+  // reserve a bit for differentiating between virtual and non-virtual member
+  // functions. If the current target's C++ ABI requires this and this is a
+  // member function, set its alignment accordingly.
+  if (getTarget().getCXXABI().areMemberFunctionsAligned()) {
+    if (F->getAlignment() < 2 && isa<CXXMethodDecl>(D))
+      F->setAlignment(2);
+  }
 }
 
 void CodeGenModule::SetCommonAttributes(const Decl *D,
Index: cfe/trunk/lib/CodeGen/ItaniumCXXABI.cpp
===================================================================
--- cfe/trunk/lib/CodeGen/ItaniumCXXABI.cpp
+++ cfe/trunk/lib/CodeGen/ItaniumCXXABI.cpp
@@ -354,6 +354,20 @@
   // ARM64 libraries are prepared for non-unique RTTI.
   bool shouldRTTIBeUnique() const override { return false; }
 };
+
+class WebAssemblyCXXABI final : public ItaniumCXXABI {
+public:
+  explicit WebAssemblyCXXABI(CodeGen::CodeGenModule &CGM)
+      : ItaniumCXXABI(CGM, /*UseARMMethodPtrABI=*/true,
+                      /*UseARMGuardVarABI=*/true) {}
+
+private:
+  bool HasThisReturn(GlobalDecl GD) const override {
+    return isa<CXXConstructorDecl>(GD.getDecl()) ||
+           (isa<CXXDestructorDecl>(GD.getDecl()) &&
+            GD.getDtorType() != Dtor_Deleting);
+  }
+};
 }
 
 CodeGen::CGCXXABI *CodeGen::CreateItaniumCXXABI(CodeGenModule &CGM) {
@@ -377,6 +391,9 @@
   case TargetCXXABI::GenericMIPS:
     return new ItaniumCXXABI(CGM, /* UseARMMethodPtrABI = */ true);
 
+  case TargetCXXABI::WebAssembly:
+    return new WebAssemblyCXXABI(CGM);
+
   case TargetCXXABI::GenericItanium:
     if (CGM.getContext().getTargetInfo().getTriple().getArch()
         == llvm::Triple::le32) {
Index: cfe/trunk/lib/CodeGen/TargetInfo.cpp
===================================================================
--- cfe/trunk/lib/CodeGen/TargetInfo.cpp
+++ cfe/trunk/lib/CodeGen/TargetInfo.cpp
@@ -445,6 +445,83 @@
 }
 
 //===----------------------------------------------------------------------===//
+// WebAssembly ABI Implementation
+//
+// This is a very simple ABI that relies a lot on DefaultABIInfo.
+//===----------------------------------------------------------------------===//
+
+class WebAssemblyABIInfo final : public DefaultABIInfo {
+public:
+  explicit WebAssemblyABIInfo(CodeGen::CodeGenTypes &CGT)
+      : DefaultABIInfo(CGT) {}
+
+private:
+  ABIArgInfo classifyReturnType(QualType RetTy) const;
+  ABIArgInfo classifyArgumentType(QualType Ty) const;
+
+  // DefaultABIInfo's classifyReturnType and classifyArgumentType are
+  // non-virtual, but computeInfo is virtual, so we overload that.
+  void computeInfo(CGFunctionInfo &FI) const override {
+    if (!getCXXABI().classifyReturnType(FI))
+      FI.getReturnInfo() = classifyReturnType(FI.getReturnType());
+    for (auto &Arg : FI.arguments())
+      Arg.info = classifyArgumentType(Arg.type);
+  }
+};
+
+class WebAssemblyTargetCodeGenInfo final : public TargetCodeGenInfo {
+public:
+  explicit WebAssemblyTargetCodeGenInfo(CodeGen::CodeGenTypes &CGT)
+      : TargetCodeGenInfo(new WebAssemblyABIInfo(CGT)) {}
+};
+
+/// \brief Classify argument of given type \p Ty.
+ABIArgInfo WebAssemblyABIInfo::classifyArgumentType(QualType Ty) const {
+  Ty = useFirstFieldIfTransparentUnion(Ty);
+
+  if (isAggregateTypeForABI(Ty)) {
+    // Records with non-trivial destructors/copy-constructors should not be
+    // passed by value.
+    unsigned TypeAlign = getContext().getTypeAlignInChars(Ty).getQuantity();
+    if (auto RAA = getRecordArgABI(Ty, getCXXABI()))
+      return ABIArgInfo::getIndirect(TypeAlign,
+                                     RAA == CGCXXABI::RAA_DirectInMemory);
+    // Ignore empty structs/unions.
+    if (isEmptyRecord(getContext(), Ty, true))
+      return ABIArgInfo::getIgnore();
+    // Lower single-element structs to just pass a regular value. TODO: We
+    // could do reasonable-size multiple-element structs too, using getExpand(),
+    // though watch out for things like bitfields.
+    if (const Type *SeltTy = isSingleElementStruct(Ty, getContext()))
+      return ABIArgInfo::getDirect(CGT.ConvertType(QualType(SeltTy, 0)));
+    return ABIArgInfo::getIndirect(TypeAlign);
+  }
+
+  // Otherwise just do the default thing.
+  return DefaultABIInfo::classifyArgumentType(Ty);
+}
+
+ABIArgInfo WebAssemblyABIInfo::classifyReturnType(QualType RetTy) const {
+  if (isAggregateTypeForABI(RetTy)) {
+    // Records with non-trivial destructors/copy-constructors should not be
+    // returned by value.
+    if (!getRecordArgABI(RetTy, getCXXABI())) {
+      // Ignore empty structs/unions.
+      if (isEmptyRecord(getContext(), RetTy, true))
+        return ABIArgInfo::getIgnore();
+      // Lower single-element structs to just return a regular value. TODO: We
+      // could do reasonable-size multiple-element structs too, using
+      // ABIArgInfo::getDirect().
+      if (const Type *SeltTy = isSingleElementStruct(RetTy, getContext()))
+        return ABIArgInfo::getDirect(CGT.ConvertType(QualType(SeltTy, 0)));
+    }
+  }
+
+  // Otherwise just do the default thing.
+  return DefaultABIInfo::classifyReturnType(RetTy);
+}
+
+//===----------------------------------------------------------------------===//
 // le32/PNaCl bitcode ABI Implementation
 //
 // This is a simplified version of the x86_32 ABI.  Arguments and return values
@@ -7155,6 +7232,10 @@
     return *(TheTargetCodeGenInfo = new AArch64TargetCodeGenInfo(Types, Kind));
   }
 
+  case llvm::Triple::wasm32:
+  case llvm::Triple::wasm64:
+    return *(TheTargetCodeGenInfo = new WebAssemblyTargetCodeGenInfo(Types));
+
   case llvm::Triple::arm:
   case llvm::Triple::armeb:
   case llvm::Triple::thumb:
Index: cfe/trunk/lib/Driver/Driver.cpp
===================================================================
--- cfe/trunk/lib/Driver/Driver.cpp
+++ cfe/trunk/lib/Driver/Driver.cpp
@@ -2265,6 +2265,10 @@
       case llvm::Triple::shave:
         TC = new toolchains::SHAVEToolChain(*this, Target, Args);
         break;
+      case llvm::Triple::wasm32:
+      case llvm::Triple::wasm64:
+        TC = new toolchains::WebAssembly(*this, Target, Args);
+        break;
       default:
         if (Target.isOSBinFormatELF())
           TC = new toolchains::Generic_ELF(*this, Target, Args);
Index: cfe/trunk/lib/Driver/ToolChain.cpp
===================================================================
--- cfe/trunk/lib/Driver/ToolChain.cpp
+++ cfe/trunk/lib/Driver/ToolChain.cpp
@@ -244,11 +244,13 @@
 
 bool ToolChain::isThreadModelSupported(const StringRef Model) const {
   if (Model == "single") {
-    // FIXME: 'single' is only supported on ARM so far.
+    // FIXME: 'single' is only supported on ARM and WebAssembly so far.
     return Triple.getArch() == llvm::Triple::arm ||
            Triple.getArch() == llvm::Triple::armeb ||
            Triple.getArch() == llvm::Triple::thumb ||
-           Triple.getArch() == llvm::Triple::thumbeb;
+           Triple.getArch() == llvm::Triple::thumbeb ||
+           Triple.getArch() == llvm::Triple::wasm32 ||
+           Triple.getArch() == llvm::Triple::wasm64;
   } else if (Model == "posix")
     return true;
 
Index: cfe/trunk/lib/Driver/ToolChains.h
===================================================================
--- cfe/trunk/lib/Driver/ToolChains.h
+++ cfe/trunk/lib/Driver/ToolChains.h
@@ -931,6 +931,27 @@
   mutable std::unique_ptr<Tool> Assembler;
 };
 
+class LLVM_LIBRARY_VISIBILITY WebAssembly final : public ToolChain {
+public:
+  WebAssembly(const Driver &D, const llvm::Triple &Triple,
+              const llvm::opt::ArgList &Args)
+      : ToolChain(D, Triple, Args) {}
+
+private:
+  bool IsMathErrnoDefault() const override;
+  bool IsObjCNonFragileABIDefault() const override;
+  bool UseObjCMixedDispatch() const override;
+  bool isPICDefault() const override;
+  bool isPIEDefault() const override;
+  bool isPICDefaultForced() const override;
+  bool IsIntegratedAssemblerDefault() const override;
+  bool hasBlocksRuntime() const override;
+  bool SupportsObjCGC() const override;
+  bool SupportsProfiling() const override;
+  void addClangTargetOptions(const llvm::opt::ArgList &DriverArgs,
+                             llvm::opt::ArgStringList &CC1Args) const override;
+};
+
 } // end namespace toolchains
 } // end namespace driver
 } // end namespace clang
Index: cfe/trunk/lib/Driver/ToolChains.cpp
===================================================================
--- cfe/trunk/lib/Driver/ToolChains.cpp
+++ cfe/trunk/lib/Driver/ToolChains.cpp
@@ -3937,3 +3937,32 @@
   // assembler to the driver, except not the way it expects.
   llvm_unreachable("SHAVEToolChain can't buildAssembler");
 }
+
+bool WebAssembly::IsMathErrnoDefault() const { return false; }
+
+bool WebAssembly::IsObjCNonFragileABIDefault() const { return true; }
+
+bool WebAssembly::UseObjCMixedDispatch() const { return true; }
+
+bool WebAssembly::isPICDefault() const { return false; }
+
+bool WebAssembly::isPIEDefault() const { return false; }
+
+bool WebAssembly::isPICDefaultForced() const { return false; }
+
+bool WebAssembly::IsIntegratedAssemblerDefault() const { return true; }
+
+// TODO: Support Objective C stuff.
+bool WebAssembly::SupportsObjCGC() const { return false; }
+
+bool WebAssembly::hasBlocksRuntime() const { return false; }
+
+// TODO: Support profiling.
+bool WebAssembly::SupportsProfiling() const { return false; }
+
+void WebAssembly::addClangTargetOptions(const ArgList &DriverArgs,
+                                        ArgStringList &CC1Args) const {
+  if (DriverArgs.hasFlag(options::OPT_fuse_init_array,
+                         options::OPT_fno_use_init_array, true))
+    CC1Args.push_back("-fuse-init-array");
+}
Index: cfe/trunk/lib/Driver/Tools.cpp
===================================================================
--- cfe/trunk/lib/Driver/Tools.cpp
+++ cfe/trunk/lib/Driver/Tools.cpp
@@ -484,6 +484,8 @@
     return false;
 
   case llvm::Triple::xcore:
+  case llvm::Triple::wasm32:
+  case llvm::Triple::wasm64:
     return true;
   }
 }
@@ -1553,6 +1555,25 @@
   }
 }
 
+/// Get the (LLVM) name of the WebAssembly cpu we are targeting.
+static StringRef getWebAssemblyTargetCPU(const ArgList &Args) {
+  // If we have -mcpu=, use that.
+  if (Arg *A = Args.getLastArg(options::OPT_mcpu_EQ)) {
+    StringRef CPU = A->getValue();
+
+#ifdef __wasm__
+    // Handle "native" by examining the host. "native" isn't meaningful when
+    // cross compiling, so only support this when the host is also WebAssembly.
+    if (CPU == "native")
+      return llvm::sys::getHostCPUName();
+#endif
+
+    return CPU;
+  }
+
+  return "generic";
+}
+
 static std::string getCPUName(const ArgList &Args, const llvm::Triple &T,
                               bool FromAs = false) {
   switch (T.getArch()) {
@@ -1625,6 +1646,10 @@
   case llvm::Triple::r600:
   case llvm::Triple::amdgcn:
     return getR600TargetGPU(Args);
+
+  case llvm::Triple::wasm32:
+  case llvm::Triple::wasm64:
+    return getWebAssemblyTargetCPU(Args);
   }
 }
 
@@ -2074,6 +2099,24 @@
     Features.push_back("+reserve-x18");
 }
 
+static void getWebAssemblyTargetFeatures(const ArgList &Args,
+                                         std::vector<const char *> &Features) {
+  for (const Arg *A : Args.filtered(options::OPT_m_wasm_Features_Group)) {
+    StringRef Name = A->getOption().getName();
+    A->claim();
+
+    // Skip over "-m".
+    assert(Name.startswith("m") && "Invalid feature name.");
+    Name = Name.substr(1);
+
+    bool IsNegative = Name.startswith("no-");
+    if (IsNegative)
+      Name = Name.substr(3);
+
+    Features.push_back(Args.MakeArgString((IsNegative ? "-" : "+") + Name));
+  }
+}
+
 static void getTargetFeatures(const Driver &D, const llvm::Triple &Triple,
                               const ArgList &Args, ArgStringList &CmdArgs,
                               bool ForAS) {
@@ -2111,6 +2154,10 @@
   case llvm::Triple::x86_64:
     getX86TargetFeatures(D, Triple, Args, Features);
     break;
+  case llvm::Triple::wasm32:
+  case llvm::Triple::wasm64:
+    getWebAssemblyTargetFeatures(Args, Features);
+    break;
   }
 
   // Find the last of each feature.
@@ -2590,9 +2637,15 @@
 
 static bool shouldUseFramePointerForTarget(const ArgList &Args,
                                            const llvm::Triple &Triple) {
-  // XCore never wants frame pointers, regardless of OS.
-  if (Triple.getArch() == llvm::Triple::xcore) {
+  switch (Triple.getArch()) {
+  case llvm::Triple::xcore:
+  case llvm::Triple::wasm32:
+  case llvm::Triple::wasm64:
+    // XCore never wants frame pointers, regardless of OS.
+    // WebAssembly never wants frame pointers.
     return false;
+  default:
+    break;
   }
 
   if (Triple.isOSLinux()) {
Index: cfe/trunk/test/CodeGen/align-wasm.c
===================================================================
--- cfe/trunk/test/CodeGen/align-wasm.c
+++ cfe/trunk/test/CodeGen/align-wasm.c
@@ -0,0 +1,13 @@
+// RUN: %clang_cc1 -triple wasm32-unknown-unknown -emit-llvm %s -o - \
+// RUN:   | FileCheck %s
+// RUN: %clang_cc1 -triple wasm64-unknown-unknown -emit-llvm %s -o - \
+// RUN:   | FileCheck %s
+
+void test1_f(void *);
+
+void test1_g(void) {
+  float x[4];
+  test1_f(x);
+}
+// CHECK: @test1_g
+// CHECK: alloca [4 x float], align 16
Index: cfe/trunk/test/CodeGen/builtins-wasm.c
===================================================================
--- cfe/trunk/test/CodeGen/builtins-wasm.c
+++ cfe/trunk/test/CodeGen/builtins-wasm.c
@@ -0,0 +1,10 @@
+// RUN: %clang_cc1 -triple wasm32-unknown-unknown -O3 -emit-llvm -o - %s \
+// RUN:   | FileCheck %s -check-prefix=WEBASSEMBLY32
+// RUN: %clang_cc1 -triple wasm64-unknown-unknown -O3 -emit-llvm -o - %s \
+// RUN:   | FileCheck %s -check-prefix=WEBASSEMBLY64
+
+__SIZE_TYPE__ f0(void) {
+  return __builtin_wasm_page_size();
+// WEBASSEMBLY32: call {{i.*}} @llvm.wasm.page.size.i32()
+// WEBASSEMBLY64: call {{i.*}} @llvm.wasm.page.size.i64()
+}
Index: cfe/trunk/test/CodeGen/target-data.c
===================================================================
--- cfe/trunk/test/CodeGen/target-data.c
+++ cfe/trunk/test/CodeGen/target-data.c
@@ -78,6 +78,14 @@
 // RUN: FileCheck %s -check-prefix=LE32-NACL
 // LE32-NACL: target datalayout = "e-p:32:32-i64:64"
 
+// RUN: %clang_cc1 -triple wasm32-unknown-unknown -o - -emit-llvm %s | \
+// RUN: FileCheck %s -check-prefix=WEBASSEMBLY32
+// WEBASSEMBLY32: target datalayout = "e-p:32:32-i64:64-n32:64-S128"
+
+// RUN: %clang_cc1 -triple wasm64-unknown-unknown -o - -emit-llvm %s | \
+// RUN: FileCheck %s -check-prefix=WEBASSEMBLY64
+// WEBASSEMBLY64: target datalayout = "e-p:64:64-i64:64-n32:64-S128"
+
 // RUN: %clang_cc1 -triple powerpc-unknown -o - -emit-llvm %s | \
 // RUN: FileCheck %s -check-prefix=PPC
 // PPC: target datalayout = "E-m:e-p:32:32-i64:64-n32"
Index: cfe/trunk/test/CodeGen/wasm-arguments.c
===================================================================
--- cfe/trunk/test/CodeGen/wasm-arguments.c
+++ cfe/trunk/test/CodeGen/wasm-arguments.c
@@ -0,0 +1,93 @@
+// RUN: %clang_cc1 -triple wasm32-unknown-unknown %s -emit-llvm -o - \
+// RUN:   | FileCheck %s -check-prefix=WEBASSEMBLY32
+// RUN: %clang_cc1 -triple wasm64-unknown-unknown %s -emit-llvm -o - \
+// RUN:   | FileCheck %s -check-prefix=WEBASSEMBLY64
+
+// Basic argument/attribute tests for WebAssembly
+
+// WEBASSEMBLY32: define void @f0(i32 %i, i32 %j, i64 %k, double %l, double %m)
+// WEBASSEMBLY64: define void @f0(i32 %i, i64 %j, i64 %k, double %l, double %m)
+void f0(int i, long j, long long k, double l, long double m) {}
+
+typedef struct {
+  int aa;
+  int bb;
+} s1;
+// Structs should be passed byval and not split up.
+// WEBASSEMBLY32: define void @f1(%struct.s1* byval align 4 %i)
+// WEBASSEMBLY64: define void @f1(%struct.s1* byval align 4 %i)
+void f1(s1 i) {}
+
+typedef struct {
+  int cc;
+} s2;
+// Single-element structs should be returned as the one element.
+// WEBASSEMBLY32: define i32 @f2()
+// WEBASSEMBLY64: define i32 @f2()
+s2 f2() {
+  s2 foo;
+  return foo;
+}
+
+typedef struct {
+  int cc;
+  int dd;
+} s3;
+// Structs should be returned sret and not simplified by the frontend.
+// WEBASSEMBLY32: define void @f3(%struct.s3* noalias sret %agg.result)
+// WEBASSEMBLY64: define void @f3(%struct.s3* noalias sret %agg.result)
+s3 f3() {
+  s3 foo;
+  return foo;
+}
+
+// WEBASSEMBLY32: define void @f4(i64 %i)
+// WEBASSEMBLY64: define void @f4(i64 %i)
+void f4(long long i) {}
+
+// i8/i16 should be signext, i32 and higher should not.
+// WEBASSEMBLY32: define void @f5(i8 signext %a, i16 signext %b)
+// WEBASSEMBLY64: define void @f5(i8 signext %a, i16 signext %b)
+void f5(char a, short b) {}
+
+// WEBASSEMBLY32: define void @f6(i8 zeroext %a, i16 zeroext %b)
+// WEBASSEMBLY64: define void @f6(i8 zeroext %a, i16 zeroext %b)
+void f6(unsigned char a, unsigned short b) {}
+
+
+enum my_enum {
+  ENUM1,
+  ENUM2,
+  ENUM3,
+};
+// Enums should be treated as the underlying i32.
+// WEBASSEMBLY32: define void @f7(i32 %a)
+// WEBASSEMBLY64: define void @f7(i32 %a)
+void f7(enum my_enum a) {}
+
+enum my_big_enum {
+  ENUM4 = 0xFFFFFFFFFFFFFFFF,
+};
+// Big enums should be treated as the underlying i64.
+// WEBASSEMBLY32: define void @f8(i64 %a)
+// WEBASSEMBLY64: define void @f8(i64 %a)
+void f8(enum my_big_enum a) {}
+
+union simple_union {
+  int a;
+  char b;
+};
+// Unions should be passed as byval structs.
+// WEBASSEMBLY32: define void @f9(%union.simple_union* byval align 4 %s)
+// WEBASSEMBLY64: define void @f9(%union.simple_union* byval align 4 %s)
+void f9(union simple_union s) {}
+
+typedef struct {
+  int b4 : 4;
+  int b3 : 3;
+  int b8 : 8;
+} bitfield1;
+// Bitfields should be passed as byval structs.
+// WEBASSEMBLY32: define void @f10(%struct.bitfield1* byval align 4 %bf1)
+// WEBASSEMBLY64: define void @f10(%struct.bitfield1* byval align 4 %bf1)
+void f10(bitfield1 bf1) {}
Index: cfe/trunk/test/CodeGen/wasm-regparm.c
===================================================================
--- cfe/trunk/test/CodeGen/wasm-regparm.c
+++ cfe/trunk/test/CodeGen/wasm-regparm.c
@@ -0,0 +1,4 @@
+// RUN: %clang_cc1 -triple wasm32-unknown-unknown %s -fsyntax-only -verify
+// RUN: %clang_cc1 -triple wasm64-unknown-unknown %s -fsyntax-only -verify
+
+void __attribute__((regparm(2))) fc_f1(int i, int j, int k) {} // expected-error{{'regparm' is not valid on this platform}}
Index: cfe/trunk/test/CodeGenCXX/constructor-destructor-return-this.cpp
===================================================================
--- cfe/trunk/test/CodeGenCXX/constructor-destructor-return-this.cpp
+++ cfe/trunk/test/CodeGenCXX/constructor-destructor-return-this.cpp
@@ -1,6 +1,8 @@
 //RUN: %clang_cc1 %s -emit-llvm -o - -triple=i686-unknown-linux | FileCheck --check-prefix=CHECKGEN %s
 //RUN: %clang_cc1 %s -emit-llvm -o - -triple=thumbv7-apple-ios6.0 -target-abi apcs-gnu | FileCheck --check-prefix=CHECKARM %s
 //RUN: %clang_cc1 %s -emit-llvm -o - -triple=thumbv7-apple-ios5.0 -target-abi apcs-gnu | FileCheck --check-prefix=CHECKIOS5 %s
+//RUN: %clang_cc1 %s -emit-llvm -o - -triple=wasm32-unknown-unknown \
+//RUN:   | FileCheck --check-prefix=CHECKARM %s
 //RUN: %clang_cc1 %s -emit-llvm -o - -triple=i386-pc-win32 -fno-rtti | FileCheck --check-prefix=CHECKMS %s
 // FIXME: these tests crash on the bots when run with -triple=x86_64-pc-win32
 
Index: cfe/trunk/test/CodeGenCXX/member-alignment.cpp
===================================================================
--- cfe/trunk/test/CodeGenCXX/member-alignment.cpp
+++ cfe/trunk/test/CodeGenCXX/member-alignment.cpp
@@ -1,4 +1,9 @@
-// RUN: %clang_cc1 -emit-llvm -triple %itanium_abi_triple %s -o - | FileCheck %s
+// RUN: %clang_cc1 -emit-llvm -triple %itanium_abi_triple %s -o - | \
+// RUN: FileCheck -check-prefix CHECK-ITANIUM %s
+// RUN: %clang_cc1 -emit-llvm -triple wasm32-unknown-unknown %s -o - | \
+// RUN: FileCheck -check-prefix CHECK-WEBASSEMBLY32 %s
+// RUN: %clang_cc1 -emit-llvm -triple wasm64-unknown-unknown %s -o - | \
+// RUN: FileCheck -check-prefix CHECK-WEBASSEMBLY64 %s
 
 // rdar://7268289
 
@@ -10,10 +15,14 @@
 
 void
 t::bar(void) {
-// CHECK: _ZN1t3barEv{{.*}} align 2
+// CHECK-ITANIUM: @_ZN1t3barEv({{.*}}) #0 align 2 {
+// CHECK-WEBASSEMBLY32: @_ZN1t3barEv({{.*}}) #0 {
+// CHECK-WEBASSEMBLY64: @_ZN1t3barEv({{.*}}) #0 {
 }
 
 void
 t::foo(void) {
-// CHECK: _ZN1t3fooEv{{.*}} align 2
+// CHECK-ITANIUM: @_ZN1t3fooEv({{.*}}) unnamed_addr #0 align 2 {
+// CHECK-WEBASSEMBLY32: @_ZN1t3fooEv({{.*}}) unnamed_addr #0 {
+// CHECK-WEBASSEMBLY64: @_ZN1t3fooEv({{.*}}) unnamed_addr #0 {
 }
Index: cfe/trunk/test/CodeGenCXX/member-function-pointers.cpp
===================================================================
--- cfe/trunk/test/CodeGenCXX/member-function-pointers.cpp
+++ cfe/trunk/test/CodeGenCXX/member-function-pointers.cpp
@@ -8,6 +8,8 @@
 // RUN: %clang_cc1 %s -emit-llvm -o - -triple=le32-unknown-nacl | FileCheck -check-prefix GLOBAL-ARM %s
 // MIPS uses the same representation of method pointers as ARM.
 // RUN: %clang_cc1 %s -emit-llvm -o - -triple=mips-unknown-linux-gnu | FileCheck -check-prefix GLOBAL-ARM %s
+// WebAssembly uses the same representation of method pointers as ARM.
+// RUN: %clang_cc1 %s -emit-llvm -o - -triple=wasm32-unknown-unknown | FileCheck -check-prefix GLOBAL-ARM %s
 
 struct A { int a; void f(); virtual void vf1(); virtual void vf2(); };
 struct B { int b; virtual void g(); };
Index: cfe/trunk/test/CodeGenCXX/static-init-wasm.cpp
===================================================================
--- cfe/trunk/test/CodeGenCXX/static-init-wasm.cpp
+++ cfe/trunk/test/CodeGenCXX/static-init-wasm.cpp
@@ -0,0 +1,54 @@
+// RUN: %clang_cc1 -emit-llvm -triple=wasm32-unknown-unknown -o - %s \
+// RUN:   | FileCheck %s -check-prefix=WEBASSEMBLY32
+// RUN: %clang_cc1 -emit-llvm -triple=wasm64-unknown-unknown -o - %s \
+// RUN:   | FileCheck %s -check-prefix=WEBASSEMBLY64
+
+// Test that we don't create common blocks.
+int tentative;
+// WEBASSEMBLY32: @tentative = global i32 0, align 4
+// WEBASSEMBLY64: @tentative = global i32 0, align 4
+
+// Test that WebAssembly uses the ARM-style ABI in which the static
+// variable's guard variable is tested via "load i8 and test the
+// bottom bit" rather than the Itanium/x86 ABI which uses "load i8
+// and compare with zero".
+int f();
+void g() {
+  static int a = f();
+}
+// WEBASSEMBLY32-LABEL: @_Z1gv()
+// WEBASSEMBLY32:       %[[R0:.+]] = load atomic i8, i8* bitcast (i32* @_ZGVZ1gvE1a to i8*) acquire, align 1
+// WEBASSEMBLY32-NEXT:  %[[R1:.+]] = and i8 %[[R0]], 1
+// WEBASSEMBLY32-NEXT:  %[[R2:.+]] = icmp eq i8 %[[R1]], 0
+// WEBASSEMBLY32-NEXT:  br i1 %[[R2]], label %[[CHECK:.+]], label %[[END:.+]]
+// WEBASSEMBLY32:       [[CHECK]]
+// WEBASSEMBLY32:       call i32 @__cxa_guard_acquire
+// WEBASSEMBLY32:       [[END]]
+// WEBASSEMBLY32:       call void @__cxa_guard_release
+//
+// WEBASSEMBLY64-LABEL: @_Z1gv()
+// WEBASSEMBLY64:       %[[R0:.+]] = load atomic i8, i8* bitcast (i64* @_ZGVZ1gvE1a to i8*) acquire, align 1
+// WEBASSEMBLY64-NEXT:  %[[R1:.+]] = and i8 %[[R0]], 1
+// WEBASSEMBLY64-NEXT:  %[[R2:.+]] = icmp eq i8 %[[R1]], 0
+// WEBASSEMBLY64-NEXT:  br i1 %[[R2]], label %[[CHECK:.+]], label %[[END:.+]]
+// WEBASSEMBLY64:       [[CHECK]]
+// WEBASSEMBLY64:       call i32 @__cxa_guard_acquire
+// WEBASSEMBLY64:       [[END]]
+// WEBASSEMBLY64:       call void @__cxa_guard_release
+
+// Test various aspects of static constructor calls.
+struct A {
+    A();
+};
+
+A theA;
+
+// WEBASSEMBLY32: define internal void @__cxx_global_var_init() #0 section ".text.__startup" {
+// WEBASSEMBLY32: call %struct.A* @_ZN1AC1Ev(%struct.A* @theA)
+// WEBASSEMBLY32: define internal void @_GLOBAL__sub_I_static_init_wasm.cpp() #0 section ".text.__startup" {
+// WEBASSEMBLY32: call void @__cxx_global_var_init()
+//
+// WEBASSEMBLY64: define internal void @__cxx_global_var_init() #0 section ".text.__startup" {
+// WEBASSEMBLY64: call %struct.A* @_ZN1AC1Ev(%struct.A* @theA)
+// WEBASSEMBLY64: define internal void @_GLOBAL__sub_I_static_init_wasm.cpp() #0 section ".text.__startup" {
+// WEBASSEMBLY64: call void @__cxx_global_var_init()
Index: cfe/trunk/test/CodeGenCXX/wasm-args-returns.cpp
===================================================================
--- cfe/trunk/test/CodeGenCXX/wasm-args-returns.cpp
+++ cfe/trunk/test/CodeGenCXX/wasm-args-returns.cpp
@@ -0,0 +1,100 @@
+// RUN: %clang_cc1 -O1 -triple wasm32-unknown-unknown -emit-llvm -o - %s \
+// RUN:   | FileCheck %s
+// RUN: %clang_cc1 -O1 -triple wasm64-unknown-unknown -emit-llvm -o - %s \
+// RUN:   | FileCheck %s
+
+#define concat_(x, y) x ## y
+#define concat(x, y) concat_(x, y)
+
+#define test(T) \
+  T forward(T x) { return x; } \
+  void use(T x); \
+  T concat(def_, T)(void); \
+  void concat(test_, T)(void) { use(concat(def_, T)()); }
+
+struct one_field { double d; };
+test(one_field);
+// CHECK: define double @_Z7forward9one_field(double %{{.*}})
+//
+// CHECK: define void @_Z14test_one_fieldv()
+// CHECK: %[[call:.*]] = tail call double @_Z13def_one_fieldv()
+// CHECK: tail call void @_Z3use9one_field(double %[[call]])
+// CHECK: ret void
+//
+// CHECK: declare void @_Z3use9one_field(double)
+// CHECK: declare double @_Z13def_one_fieldv()
+
+struct two_fields { double d, e; };
+test(two_fields);
+// CHECK: define void @_Z7forward10two_fields(%struct.two_fields* noalias nocapture sret %{{.*}}, %struct.two_fields* byval nocapture readonly align 8 %{{.*}})
+//
+// CHECK: define void @_Z15test_two_fieldsv()
+// CHECK: %[[tmp:.*]] = alloca %struct.two_fields, align 8
+// CHECK: call void @_Z14def_two_fieldsv(%struct.two_fields* nonnull sret %[[tmp]])
+// CHECK: call void @_Z3use10two_fields(%struct.two_fields* byval nonnull align 8 %[[tmp]])
+// CHECK: ret void
+//
+// CHECK: declare void @_Z3use10two_fields(%struct.two_fields* byval align 8)
+// CHECK: declare void @_Z14def_two_fieldsv(%struct.two_fields* sret)
+
+struct copy_ctor {
+    double d;
+    copy_ctor(copy_ctor const&);
+};
+test(copy_ctor);
+// CHECK: define void @_Z7forward9copy_ctor(%struct.copy_ctor* noalias sret %{{.*}}, %struct.copy_ctor* align 8 %{{.*}})
+//
+// CHECK: declare %struct.copy_ctor* @_ZN9copy_ctorC1ERKS_(%struct.copy_ctor* returned, %struct.copy_ctor* dereferenceable(8))
+//
+// CHECK: define void @_Z14test_copy_ctorv()
+// CHECK: %[[tmp:.*]] = alloca %struct.copy_ctor, align 8
+// CHECK: call void @_Z13def_copy_ctorv(%struct.copy_ctor* nonnull sret %[[tmp]])
+// CHECK: call void @_Z3use9copy_ctor(%struct.copy_ctor* nonnull align 8 %[[tmp]])
+// CHECK: ret void
+//
+// CHECK: declare void @_Z3use9copy_ctor(%struct.copy_ctor* align 8)
+// CHECK: declare void @_Z13def_copy_ctorv(%struct.copy_ctor* sret)
+
+struct __attribute__((aligned(16))) aligned_copy_ctor {
+    double d, e;
+    aligned_copy_ctor(aligned_copy_ctor const&);
+};
+test(aligned_copy_ctor);
+// CHECK: define void @_Z7forward17aligned_copy_ctor(%struct.aligned_copy_ctor* noalias sret %{{.*}}, %struct.aligned_copy_ctor* align 16 %{{.*}})
+//
+// CHECK: declare %struct.aligned_copy_ctor* @_ZN17aligned_copy_ctorC1ERKS_(%struct.aligned_copy_ctor* returned, %struct.aligned_copy_ctor* dereferenceable(16))
+//
+// CHECK: define void @_Z22test_aligned_copy_ctorv()
+// CHECK: %[[tmp:.*]] = alloca %struct.aligned_copy_ctor, align 16
+// CHECK: call void @_Z21def_aligned_copy_ctorv(%struct.aligned_copy_ctor* nonnull sret %[[tmp]])
+// CHECK: call void @_Z3use17aligned_copy_ctor(%struct.aligned_copy_ctor* nonnull align 16 %[[tmp]])
+// CHECK: ret void
+//
+// CHECK: declare void @_Z3use17aligned_copy_ctor(%struct.aligned_copy_ctor* align 16)
+// CHECK: declare void @_Z21def_aligned_copy_ctorv(%struct.aligned_copy_ctor* sret)
+
+struct empty {};
+test(empty);
+// CHECK: define void @_Z7forward5empty()
+//
+// CHECK: define void @_Z10test_emptyv()
+// CHECK: tail call void @_Z9def_emptyv()
+// CHECK: tail call void @_Z3use5empty()
+// CHECK: ret void
+//
+// CHECK: declare void @_Z3use5empty()
+// CHECK: declare void @_Z9def_emptyv()
+
+struct one_bitfield {
+    int d:3;
+};
+test(one_bitfield);
+// CHECK: define i32 @_Z7forward12one_bitfield(i32 %{{.*}})
+//
+// CHECK: define void @_Z17test_one_bitfieldv()
+// CHECK: %[[call:.*]] = tail call i32 @_Z16def_one_bitfieldv()
+// CHECK: tail call void @_Z3use12one_bitfield(i32 %[[call]])
+// CHECK: ret void
+//
+// CHECK: declare void @_Z3use12one_bitfield(i32)
+// CHECK: declare i32 @_Z16def_one_bitfieldv()
Index: cfe/trunk/test/Driver/thread-model.c
===================================================================
--- cfe/trunk/test/Driver/thread-model.c
+++ cfe/trunk/test/Driver/thread-model.c
@@ -13,3 +13,19 @@
 // CHECK-LINUX-SINGLE: Thread model: single
 // CHECK-LINUX-SINGLE: "-mthread-model" "single"
 // CHECK-LINUX-INVALID-NOT: Thread model:
+
+// RUN: %clang -### -target wasm32-unknown-linux-gnu -c %s -v 2>&1 | FileCheck -check-prefix=CHECK-WEBASSEMBLY-DEFAULT %s
+// RUN: %clang -### -target wasm32-unknown-linux-gnu -c %s -v -mthread-model single 2>&1 | FileCheck -check-prefix=CHECK-WEBASSEMBLY-SINGLE %s
+// RUN: %clang -### -target wasm32-unknown-linux-gnu -c %s -v -mthread-model posix 2>&1 | FileCheck -check-prefix=CHECK-WEBASSEMBLY-POSIX %s
+// RUN: %clang -### -target wasm32-unknown-linux-gnu -c %s -v -mthread-model silly 2>&1 | FileCheck -check-prefix=CHECK-WEBASSEMBLY-INVALID %s
+// RUN: %clang -### -target wasm64-unknown-linux-gnu -c %s -v 2>&1 | FileCheck -check-prefix=CHECK-WEBASSEMBLY-DEFAULT %s
+// RUN: %clang -### -target wasm64-unknown-linux-gnu -c %s -v -mthread-model single 2>&1 | FileCheck -check-prefix=CHECK-WEBASSEMBLY-SINGLE %s
+// RUN: %clang -### -target wasm64-unknown-linux-gnu -c %s -v -mthread-model posix 2>&1 | FileCheck -check-prefix=CHECK-WEBASSEMBLY-POSIX %s
+// RUN: %clang -### -target wasm64-unknown-linux-gnu -c %s -v -mthread-model silly 2>&1 | FileCheck -check-prefix=CHECK-WEBASSEMBLY-INVALID %s
+// CHECK-WEBASSEMBLY-DEFAULT: Thread model: posix
+// CHECK-WEBASSEMBLY-DEFAULT: "-mthread-model" "posix"
+// CHECK-WEBASSEMBLY-SINGLE: Thread model: single
+// CHECK-WEBASSEMBLY-SINGLE: "-mthread-model" "single"
+// CHECK-WEBASSEMBLY-POSIX: Thread model: posix
+// CHECK-WEBASSEMBLY-POSIX: "-mthread-model" "posix"
+// CHECK-WEBASSEMBLY-INVALID-NOT: Thread model:
Index: cfe/trunk/test/Driver/wasm32-unknown-unknown.cpp
===================================================================
--- cfe/trunk/test/Driver/wasm32-unknown-unknown.cpp
+++ cfe/trunk/test/Driver/wasm32-unknown-unknown.cpp
@@ -0,0 +1,119 @@
+// RUN: %clang -target wasm32-unknown-unknown -### %s -emit-llvm-only -c 2>&1 \
+// RUN:   | FileCheck %s -check-prefix=ECHO
+// RUN: %clang -target wasm32-unknown-unknown %s -emit-llvm -S -o - \
+// RUN:   | FileCheck %s
+// RUN: %clang -target wasm32-unknown-unknown %s -emit-llvm -S -pthread -o - \
+// RUN:   | FileCheck %s -check-prefix=THREADS
+
+// ECHO: {{.*}} "-cc1" {{.*}}wasm32-unknown-unknown.c
+
+typedef __builtin_va_list va_list;
+typedef __SIZE_TYPE__ size_t;
+typedef __PTRDIFF_TYPE__ ptrdiff_t;
+
+extern "C" {
+
+// CHECK: @align_c = global i32 1
+int align_c = __alignof(char);
+
+// CHECK: @align_s = global i32 2
+int align_s = __alignof(short);
+
+// CHECK: @align_i = global i32 4
+int align_i = __alignof(int);
+
+// CHECK: @align_l = global i32 4
+int align_l = __alignof(long);
+
+// CHECK: @align_ll = global i32 8
+int align_ll = __alignof(long long);
+
+// CHECK: @align_p = global i32 4
+int align_p = __alignof(void*);
+
+// CHECK: @align_f = global i32 4
+int align_f = __alignof(float);
+
+// CHECK: @align_d = global i32 8
+int align_d = __alignof(double);
+
+// CHECK: @align_ld = global i32 8
+int align_ld = __alignof(long double);
+
+// CHECK: @align_vl = global i32 4
+int align_vl = __alignof(va_list);
+
+// CHECK: _GNU_SOURCEdefined
+#ifdef _GNU_SOURCE
+void _GNU_SOURCEdefined() {}
+#endif
+
+// THREADS: _REENTRANTdefined
+// CHECK: _REENTRANTundefined
+#ifdef _REENTRANT
+void _REENTRANTdefined() {}
+#else
+void _REENTRANTundefined() {}
+#endif
+
+// Check types
+
+// CHECK: signext i8 @check_char()
+char check_char() { return 0; }
+
+// CHECK: signext i16 @check_short()
+short check_short() { return 0; }
+
+// CHECK: i32 @check_int()
+int check_int() { return 0; }
+
+// CHECK: i32 @check_long()
+long check_long() { return 0; }
+
+// CHECK: i64 @check_longlong()
+long long check_longlong() { return 0; }
+
+// CHECK: zeroext i8 @check_uchar()
+unsigned char check_uchar() { return 0; }
+
+// CHECK: zeroext i16 @check_ushort()
+unsigned short check_ushort() { return 0; }
+
+// CHECK: i32 @check_uint()
+unsigned int check_uint() { return 0; }
+
+// CHECK: i32 @check_ulong()
+unsigned long check_ulong() { return 0; }
+
+// CHECK: i64 @check_ulonglong()
+unsigned long long check_ulonglong() { return 0; }
+
+// CHECK: i32 @check_size_t()
+size_t check_size_t() { return 0; }
+
+// CHECK: float @check_float()
+float check_float() { return 0; }
+
+// CHECK: double @check_double()
+double check_double() { return 0; }
+
+// CHECK: double @check_longdouble()
+long double check_longdouble() { return 0; }
+
+}
+
+template<int> void Switch();
+template<> void Switch<4>();
+template<> void Switch<8>();
+template<> void Switch<16>();
+
+void check_pointer_size() {
+  // CHECK: SwitchILi4
+  Switch<sizeof(void*)>();
+
+  // CHECK: SwitchILi8
+  Switch<sizeof(long long)>();
+
+  // CHECK: SwitchILi4
+  Switch<sizeof(va_list)>();
+}
Index: cfe/trunk/test/Driver/wasm64-unknown-unknown.cpp
===================================================================
--- cfe/trunk/test/Driver/wasm64-unknown-unknown.cpp
+++ cfe/trunk/test/Driver/wasm64-unknown-unknown.cpp
@@ -0,0 +1,119 @@
+// RUN: %clang -target wasm64-unknown-unknown -### %s -emit-llvm-only -c 2>&1 \
+// RUN:   | FileCheck %s -check-prefix=ECHO
+// RUN: %clang -target wasm64-unknown-unknown %s -emit-llvm -S -o - \
+// RUN:   | FileCheck %s
+// RUN: %clang -target wasm64-unknown-unknown %s -emit-llvm -S -pthread -o - \
+// RUN:   | FileCheck %s -check-prefix=THREADS
+
+// ECHO: {{.*}} "-cc1" {{.*}}wasm64-unknown-unknown.c
+
+typedef __builtin_va_list va_list;
+typedef __SIZE_TYPE__ size_t;
+typedef __PTRDIFF_TYPE__ ptrdiff_t;
+
+extern "C" {
+
+// CHECK: @align_c = global i32 1
+int align_c = __alignof(char);
+
+// CHECK: @align_s = global i32 2
+int align_s = __alignof(short);
+
+// CHECK: @align_i = global i32 4
+int align_i = __alignof(int);
+
+// CHECK: @align_l = global i32 8
+int align_l = __alignof(long);
+
+// CHECK: @align_ll = global i32 8
+int align_ll = __alignof(long long);
+
+// CHECK: @align_p = global i32 8
+int align_p = __alignof(void*);
+
+// CHECK: @align_f = global i32 4
+int align_f = __alignof(float);
+
+// CHECK: @align_d = global i32 8
+int align_d = __alignof(double);
+
+// CHECK: @align_ld = global i32 8
+int align_ld = __alignof(long double);
+
+// CHECK: @align_vl = global i32 8
+int align_vl = __alignof(va_list);
+
+// CHECK: _GNU_SOURCEdefined
+#ifdef _GNU_SOURCE
+void _GNU_SOURCEdefined() {}
+#endif
+
+// THREADS: _REENTRANTdefined
+// CHECK: _REENTRANTundefined
+#ifdef _REENTRANT
+void _REENTRANTdefined() {}
+#else
+void _REENTRANTundefined() {}
+#endif
+
+// Check types
+
+// CHECK: signext i8 @check_char()
+char check_char() { return 0; }
+
+// CHECK: signext i16 @check_short()
+short check_short() { return 0; }
+
+// CHECK: i32 @check_int()
+int check_int() { return 0; }
+
+// CHECK: i64 @check_long()
+long check_long() { return 0; }
+
+// CHECK: i64 @check_longlong()
+long long check_longlong() { return 0; }
+
+// CHECK: zeroext i8 @check_uchar()
+unsigned char check_uchar() { return 0; }
+
+// CHECK: zeroext i16 @check_ushort()
+unsigned short check_ushort() { return 0; }
+
+// CHECK: i32 @check_uint()
+unsigned int check_uint() { return 0; }
+
+// CHECK: i64 @check_ulong()
+unsigned long check_ulong() { return 0; }
+
+// CHECK: i64 @check_ulonglong()
+unsigned long long check_ulonglong() { return 0; }
+
+// CHECK: i64 @check_size_t()
+size_t check_size_t() { return 0; }
+
+// CHECK: float @check_float()
+float check_float() { return 0; }
+
+// CHECK: double @check_double()
+double check_double() { return 0; }
+
+// CHECK: double @check_longdouble()
+long double check_longdouble() { return 0; }
+
+}
+
+template<int> void Switch();
+template<> void Switch<4>();
+template<> void Switch<8>();
+template<> void Switch<16>();
+
+void check_pointer_size() {
+  // CHECK: SwitchILi8
+  Switch<sizeof(void*)>();
+
+  // CHECK: SwitchILi8
+  Switch<sizeof(long long)>();
+
+  // CHECK: SwitchILi8
+  Switch<sizeof(va_list)>();
+}
Index: cfe/trunk/test/Preprocessor/init.c
===================================================================
--- cfe/trunk/test/Preprocessor/init.c
+++ cfe/trunk/test/Preprocessor/init.c
@@ -8419,3 +8419,635 @@
 // XCORE:#define __BYTE_ORDER__ __ORDER_LITTLE_ENDIAN__
 // XCORE:#define __LITTLE_ENDIAN__ 1
 // XCORE:#define __XS1B__ 1
+//
+// RUN: %clang_cc1 -E -dM -ffreestanding -triple=wasm32-unknown-unknown \
+// RUN:   < /dev/null \
+// RUN:   | FileCheck -check-prefix=WEBASSEMBLY32 %s
+//
+// WEBASSEMBLY32:#define _ILP32 1{{$}}
+// WEBASSEMBLY32-NOT:#define _LP64
+// WEBASSEMBLY32-NEXT:#define __ATOMIC_ACQUIRE 2{{$}}
+// WEBASSEMBLY32-NEXT:#define __ATOMIC_ACQ_REL 4{{$}}
+// WEBASSEMBLY32-NEXT:#define __ATOMIC_CONSUME 1{{$}}
+// WEBASSEMBLY32-NEXT:#define __ATOMIC_RELAXED 0{{$}}
+// WEBASSEMBLY32-NEXT:#define __ATOMIC_RELEASE 3{{$}}
+// WEBASSEMBLY32-NEXT:#define __ATOMIC_SEQ_CST 5{{$}}
+// WEBASSEMBLY32-NEXT:#define __BIGGEST_ALIGNMENT__ 16{{$}}
+// WEBASSEMBLY32-NEXT:#define __BYTE_ORDER__ __ORDER_LITTLE_ENDIAN__{{$}}
+// WEBASSEMBLY32-NEXT:#define __CHAR16_TYPE__ unsigned short{{$}}
+// WEBASSEMBLY32-NEXT:#define __CHAR32_TYPE__ unsigned int{{$}}
+// WEBASSEMBLY32-NEXT:#define __CHAR_BIT__ 8{{$}}
+// WEBASSEMBLY32-NOT:#define __CHAR_UNSIGNED__
+// WEBASSEMBLY32-NEXT:#define __CONSTANT_CFSTRINGS__ 1{{$}}
+// WEBASSEMBLY32-NEXT:#define __DBL_DECIMAL_DIG__ 17{{$}}
+// WEBASSEMBLY32-NEXT:#define __DBL_DENORM_MIN__ 4.9406564584124654e-324{{$}}
+// WEBASSEMBLY32-NEXT:#define __DBL_DIG__ 15{{$}}
+// WEBASSEMBLY32-NEXT:#define __DBL_EPSILON__ 2.2204460492503131e-16{{$}}
+// WEBASSEMBLY32-NEXT:#define __DBL_HAS_DENORM__ 1{{$}}
+// WEBASSEMBLY32-NEXT:#define __DBL_HAS_INFINITY__ 1{{$}}
+// WEBASSEMBLY32-NEXT:#define __DBL_HAS_QUIET_NAN__ 1{{$}}
+// WEBASSEMBLY32-NEXT:#define __DBL_MANT_DIG__ 53{{$}}
+// WEBASSEMBLY32-NEXT:#define __DBL_MAX_10_EXP__ 308{{$}}
+// WEBASSEMBLY32-NEXT:#define __DBL_MAX_EXP__ 1024{{$}}
+// WEBASSEMBLY32-NEXT:#define __DBL_MAX__ 1.7976931348623157e+308{{$}}
+// WEBASSEMBLY32-NEXT:#define __DBL_MIN_10_EXP__ (-307){{$}}
+// WEBASSEMBLY32-NEXT:#define __DBL_MIN_EXP__ (-1021){{$}}
+// WEBASSEMBLY32-NEXT:#define __DBL_MIN__ 2.2250738585072014e-308{{$}}
+// WEBASSEMBLY32-NEXT:#define __DECIMAL_DIG__ __LDBL_DECIMAL_DIG__{{$}}
+// WEBASSEMBLY32-NOT:#define __ELF__
+// WEBASSEMBLY32-NEXT:#define __FINITE_MATH_ONLY__ 0{{$}}
+// WEBASSEMBLY32-NEXT:#define __FLT_DECIMAL_DIG__ 9{{$}}
+// WEBASSEMBLY32-NEXT:#define __FLT_DENORM_MIN__ 1.40129846e-45F{{$}}
+// WEBASSEMBLY32-NEXT:#define __FLT_DIG__ 6{{$}}
+// WEBASSEMBLY32-NEXT:#define __FLT_EPSILON__ 1.19209290e-7F{{$}}
+// WEBASSEMBLY32-NEXT:#define __FLT_EVAL_METHOD__ 0{{$}}
+// WEBASSEMBLY32-NEXT:#define __FLT_HAS_DENORM__ 1{{$}}
+// WEBASSEMBLY32-NEXT:#define __FLT_HAS_INFINITY__ 1{{$}}
+// WEBASSEMBLY32-NEXT:#define __FLT_HAS_QUIET_NAN__ 1{{$}}
+// WEBASSEMBLY32-NEXT:#define __FLT_MANT_DIG__ 24{{$}}
+// WEBASSEMBLY32-NEXT:#define __FLT_MAX_10_EXP__ 38{{$}}
+// WEBASSEMBLY32-NEXT:#define __FLT_MAX_EXP__ 128{{$}}
+// WEBASSEMBLY32-NEXT:#define __FLT_MAX__ 3.40282347e+38F{{$}}
+// WEBASSEMBLY32-NEXT:#define __FLT_MIN_10_EXP__ (-37){{$}}
+// WEBASSEMBLY32-NEXT:#define __FLT_MIN_EXP__ (-125){{$}}
+// WEBASSEMBLY32-NEXT:#define __FLT_MIN__ 1.17549435e-38F{{$}}
+// WEBASSEMBLY32-NEXT:#define __FLT_RADIX__ 2{{$}}
+// WEBASSEMBLY32-NEXT:#define __GCC_ATOMIC_BOOL_LOCK_FREE 1{{$}}
+// WEBASSEMBLY32-NEXT:#define __GCC_ATOMIC_CHAR16_T_LOCK_FREE 1{{$}}
+// WEBASSEMBLY32-NEXT:#define __GCC_ATOMIC_CHAR32_T_LOCK_FREE 1{{$}}
+// WEBASSEMBLY32-NEXT:#define __GCC_ATOMIC_CHAR_LOCK_FREE 1{{$}}
+// WEBASSEMBLY32-NEXT:#define __GCC_ATOMIC_INT_LOCK_FREE 1{{$}}
+// WEBASSEMBLY32-NEXT:#define __GCC_ATOMIC_LLONG_LOCK_FREE 1{{$}}
+// WEBASSEMBLY32-NEXT:#define __GCC_ATOMIC_LONG_LOCK_FREE 1{{$}}
+// WEBASSEMBLY32-NEXT:#define __GCC_ATOMIC_POINTER_LOCK_FREE 1{{$}}
+// WEBASSEMBLY32-NEXT:#define __GCC_ATOMIC_SHORT_LOCK_FREE 1{{$}}
+// WEBASSEMBLY32-NEXT:#define __GCC_ATOMIC_TEST_AND_SET_TRUEVAL 1{{$}}
+// WEBASSEMBLY32-NEXT:#define __GCC_ATOMIC_WCHAR_T_LOCK_FREE 1{{$}}
+// WEBASSEMBLY32-NEXT:#define __GNUC_MINOR__ {{.}}
+// WEBASSEMBLY32-NEXT:#define __GNUC_PATCHLEVEL__ {{.}}
+// WEBASSEMBLY32-NEXT:#define __GNUC_STDC_INLINE__ 1{{$}}
+// WEBASSEMBLY32-NEXT:#define __GNUC__ {{.}}
+// WEBASSEMBLY32-NEXT:#define __GXX_ABI_VERSION 1002{{$}}
+// WEBASSEMBLY32-NEXT:#define __GXX_RTTI 1{{$}}
+// WEBASSEMBLY32-NEXT:#define __ILP32__ 1{{$}}
+// WEBASSEMBLY32-NEXT:#define __INT16_C_SUFFIX__ {{$}}
+// WEBASSEMBLY32-NEXT:#define __INT16_FMTd__ "hd"{{$}}
+// WEBASSEMBLY32-NEXT:#define __INT16_FMTi__ "hi"{{$}}
+// WEBASSEMBLY32-NEXT:#define __INT16_MAX__ 32767{{$}}
+// WEBASSEMBLY32-NEXT:#define __INT16_TYPE__ short{{$}}
+// WEBASSEMBLY32-NEXT:#define __INT32_C_SUFFIX__ {{$}}
+// WEBASSEMBLY32-NEXT:#define __INT32_FMTd__ "d"{{$}}
+// WEBASSEMBLY32-NEXT:#define __INT32_FMTi__ "i"{{$}}
+// WEBASSEMBLY32-NEXT:#define __INT32_MAX__ 2147483647{{$}}
+// WEBASSEMBLY32-NEXT:#define __INT32_TYPE__ int{{$}}
+// WEBASSEMBLY32-NEXT:#define __INT64_C_SUFFIX__ LL{{$}}
+// WEBASSEMBLY32-NEXT:#define __INT64_FMTd__ "lld"{{$}}
+// WEBASSEMBLY32-NEXT:#define __INT64_FMTi__ "lli"{{$}}
+// WEBASSEMBLY32-NEXT:#define __INT64_MAX__ 9223372036854775807LL{{$}}
+// WEBASSEMBLY32-NEXT:#define __INT64_TYPE__ long long int{{$}}
+// WEBASSEMBLY32-NEXT:#define __INT8_C_SUFFIX__ {{$}}
+// WEBASSEMBLY32-NEXT:#define __INT8_FMTd__ "hhd"{{$}}
+// WEBASSEMBLY32-NEXT:#define __INT8_FMTi__ "hhi"{{$}}
+// WEBASSEMBLY32-NEXT:#define __INT8_MAX__ 127{{$}}
+// WEBASSEMBLY32-NEXT:#define __INT8_TYPE__ signed char{{$}}
+// WEBASSEMBLY32-NEXT:#define __INTMAX_C_SUFFIX__ LL{{$}}
+// WEBASSEMBLY32-NEXT:#define __INTMAX_FMTd__ "lld"{{$}}
+// WEBASSEMBLY32-NEXT:#define __INTMAX_FMTi__ "lli"{{$}}
+// WEBASSEMBLY32-NEXT:#define __INTMAX_MAX__ 9223372036854775807LL{{$}}
+// WEBASSEMBLY32-NEXT:#define __INTMAX_TYPE__ long long int{{$}}
+// WEBASSEMBLY32-NEXT:#define __INTMAX_WIDTH__ 64{{$}}
+// WEBASSEMBLY32-NEXT:#define __INTPTR_FMTd__ "ld"{{$}}
+// WEBASSEMBLY32-NEXT:#define __INTPTR_FMTi__ "li"{{$}}
+// WEBASSEMBLY32-NEXT:#define __INTPTR_MAX__ 2147483647L{{$}}
+// WEBASSEMBLY32-NEXT:#define __INTPTR_TYPE__ long int{{$}}
+// WEBASSEMBLY32-NEXT:#define __INTPTR_WIDTH__ 32{{$}}
+// WEBASSEMBLY32-NEXT:#define __INT_FAST16_FMTd__ "hd"{{$}}
+// WEBASSEMBLY32-NEXT:#define __INT_FAST16_FMTi__ "hi"{{$}}
+// WEBASSEMBLY32-NEXT:#define __INT_FAST16_MAX__ 32767{{$}}
+// WEBASSEMBLY32-NEXT:#define __INT_FAST16_TYPE__ short{{$}}
+// WEBASSEMBLY32-NEXT:#define __INT_FAST32_FMTd__ "d"{{$}}
+// WEBASSEMBLY32-NEXT:#define __INT_FAST32_FMTi__ "i"{{$}}
+// WEBASSEMBLY32-NEXT:#define __INT_FAST32_MAX__ 2147483647{{$}}
+// WEBASSEMBLY32-NEXT:#define __INT_FAST32_TYPE__ int{{$}}
+// WEBASSEMBLY32-NEXT:#define __INT_FAST64_FMTd__ "lld"{{$}}
+// WEBASSEMBLY32-NEXT:#define __INT_FAST64_FMTi__ "lli"{{$}}
+// WEBASSEMBLY32-NEXT:#define __INT_FAST64_MAX__ 9223372036854775807LL{{$}}
+// WEBASSEMBLY32-NEXT:#define __INT_FAST64_TYPE__ long long int{{$}}
+// WEBASSEMBLY32-NEXT:#define __INT_FAST8_FMTd__ "hhd"{{$}}
+// WEBASSEMBLY32-NEXT:#define __INT_FAST8_FMTi__ "hhi"{{$}}
+// WEBASSEMBLY32-NEXT:#define __INT_FAST8_MAX__ 127{{$}}
+// WEBASSEMBLY32-NEXT:#define __INT_FAST8_TYPE__ signed char{{$}}
+// WEBASSEMBLY32-NEXT:#define __INT_LEAST16_FMTd__ "hd"{{$}}
+// WEBASSEMBLY32-NEXT:#define __INT_LEAST16_FMTi__ "hi"{{$}}
+// WEBASSEMBLY32-NEXT:#define __INT_LEAST16_MAX__ 32767{{$}}
+// WEBASSEMBLY32-NEXT:#define __INT_LEAST16_TYPE__ short{{$}}
+// WEBASSEMBLY32-NEXT:#define __INT_LEAST32_FMTd__ "d"{{$}}
+// WEBASSEMBLY32-NEXT:#define __INT_LEAST32_FMTi__ "i"{{$}}
+// WEBASSEMBLY32-NEXT:#define __INT_LEAST32_MAX__ 2147483647{{$}}
+// WEBASSEMBLY32-NEXT:#define __INT_LEAST32_TYPE__ int{{$}}
+// WEBASSEMBLY32-NEXT:#define __INT_LEAST64_FMTd__ "lld"{{$}}
+// WEBASSEMBLY32-NEXT:#define __INT_LEAST64_FMTi__ "lli"{{$}}
+// WEBASSEMBLY32-NEXT:#define __INT_LEAST64_MAX__ 9223372036854775807LL{{$}}
+// WEBASSEMBLY32-NEXT:#define __INT_LEAST64_TYPE__ long long int{{$}}
+// WEBASSEMBLY32-NEXT:#define __INT_LEAST8_FMTd__ "hhd"{{$}}
+// WEBASSEMBLY32-NEXT:#define __INT_LEAST8_FMTi__ "hhi"{{$}}
+// WEBASSEMBLY32-NEXT:#define __INT_LEAST8_MAX__ 127{{$}}
+// WEBASSEMBLY32-NEXT:#define __INT_LEAST8_TYPE__ signed char{{$}}
+// WEBASSEMBLY32-NEXT:#define __INT_MAX__ 2147483647{{$}}
+// WEBASSEMBLY32-NEXT:#define __LDBL_DECIMAL_DIG__ 17{{$}}
+// WEBASSEMBLY32-NEXT:#define __LDBL_DENORM_MIN__ 4.9406564584124654e-324L{{$}}
+// WEBASSEMBLY32-NEXT:#define __LDBL_DIG__ 15{{$}}
+// WEBASSEMBLY32-NEXT:#define __LDBL_EPSILON__ 2.2204460492503131e-16L{{$}}
+// WEBASSEMBLY32-NEXT:#define __LDBL_HAS_DENORM__ 1{{$}}
+// WEBASSEMBLY32-NEXT:#define __LDBL_HAS_INFINITY__ 1{{$}}
+// WEBASSEMBLY32-NEXT:#define __LDBL_HAS_QUIET_NAN__ 1{{$}}
+// WEBASSEMBLY32-NEXT:#define __LDBL_MANT_DIG__ 53{{$}}
+// WEBASSEMBLY32-NEXT:#define __LDBL_MAX_10_EXP__ 308{{$}}
+// WEBASSEMBLY32-NEXT:#define __LDBL_MAX_EXP__ 1024{{$}}
+// WEBASSEMBLY32-NEXT:#define __LDBL_MAX__ 1.7976931348623157e+308L{{$}}
+// WEBASSEMBLY32-NEXT:#define __LDBL_MIN_10_EXP__ (-307){{$}}
+// WEBASSEMBLY32-NEXT:#define __LDBL_MIN_EXP__ (-1021){{$}}
+// WEBASSEMBLY32-NEXT:#define __LDBL_MIN__ 2.2250738585072014e-308L{{$}}
+// WEBASSEMBLY32-NEXT:#define __LITTLE_ENDIAN__ 1{{$}}
+// WEBASSEMBLY32-NEXT:#define __LONG_LONG_MAX__ 9223372036854775807LL{{$}}
+// WEBASSEMBLY32-NEXT:#define __LONG_MAX__ 2147483647L{{$}}
+// WEBASSEMBLY32-NOT:#define __LP64__
+// WEBASSEMBLY32-NEXT:#define __NO_INLINE__ 1{{$}}
+// WEBASSEMBLY32-NEXT:#define __ORDER_BIG_ENDIAN__ 4321{{$}}
+// WEBASSEMBLY32-NEXT:#define __ORDER_LITTLE_ENDIAN__ 1234{{$}}
+// WEBASSEMBLY32-NEXT:#define __ORDER_PDP_ENDIAN__ 3412{{$}}
+// WEBASSEMBLY32-NEXT:#define __POINTER_WIDTH__ 32{{$}}
+// WEBASSEMBLY32-NEXT:#define __PRAGMA_REDEFINE_EXTNAME 1{{$}}
+// WEBASSEMBLY32-NEXT:#define __PTRDIFF_FMTd__ "ld"{{$}}
+// WEBASSEMBLY32-NEXT:#define __PTRDIFF_FMTi__ "li"{{$}}
+// WEBASSEMBLY32-NEXT:#define __PTRDIFF_MAX__ 2147483647L{{$}}
+// WEBASSEMBLY32-NEXT:#define __PTRDIFF_TYPE__ long int{{$}}
+// WEBASSEMBLY32-NEXT:#define __PTRDIFF_WIDTH__ 32{{$}}
+// WEBASSEMBLY32-NOT:#define __REGISTER_PREFIX__
+// WEBASSEMBLY32-NEXT:#define __SCHAR_MAX__ 127{{$}}
+// WEBASSEMBLY32-NEXT:#define __SHRT_MAX__ 32767{{$}}
+// WEBASSEMBLY32-NEXT:#define __SIG_ATOMIC_MAX__ 2147483647{{$}}
+// WEBASSEMBLY32-NEXT:#define __SIG_ATOMIC_WIDTH__ 32{{$}}
+// WEBASSEMBLY32-NEXT:#define __SIZEOF_DOUBLE__ 8{{$}}
+// WEBASSEMBLY32-NEXT:#define __SIZEOF_FLOAT__ 4{{$}}
+// WEBASSEMBLY32-NEXT:#define __SIZEOF_INT128__ 16{{$}}
+// WEBASSEMBLY32-NEXT:#define __SIZEOF_INT__ 4{{$}}
+// WEBASSEMBLY32-NEXT:#define __SIZEOF_LONG_DOUBLE__ 8{{$}}
+// WEBASSEMBLY32-NEXT:#define __SIZEOF_LONG_LONG__ 8{{$}}
+// WEBASSEMBLY32-NEXT:#define __SIZEOF_LONG__ 4{{$}}
+// WEBASSEMBLY32-NEXT:#define __SIZEOF_POINTER__ 4{{$}}
+// WEBASSEMBLY32-NEXT:#define __SIZEOF_PTRDIFF_T__ 4{{$}}
+// WEBASSEMBLY32-NEXT:#define __SIZEOF_SHORT__ 2{{$}}
+// WEBASSEMBLY32-NEXT:#define __SIZEOF_SIZE_T__ 4{{$}}
+// WEBASSEMBLY32-NEXT:#define __SIZEOF_WCHAR_T__ 4{{$}}
+// WEBASSEMBLY32-NEXT:#define __SIZEOF_WINT_T__ 4{{$}}
+// WEBASSEMBLY32-NEXT:#define __SIZE_FMTX__ "lX"{{$}}
+// WEBASSEMBLY32-NEXT:#define __SIZE_FMTo__ "lo"{{$}}
+// WEBASSEMBLY32-NEXT:#define __SIZE_FMTu__ "lu"{{$}}
+// WEBASSEMBLY32-NEXT:#define __SIZE_FMTx__ "lx"{{$}}
+// WEBASSEMBLY32-NEXT:#define __SIZE_MAX__ 4294967295UL{{$}}
+// WEBASSEMBLY32-NEXT:#define __SIZE_TYPE__ long unsigned int{{$}}
+// WEBASSEMBLY32-NEXT:#define __SIZE_WIDTH__ 32{{$}}
+// WEBASSEMBLY32-NEXT:#define __STDC_HOSTED__ 0{{$}}
+// WEBASSEMBLY32-NOT:#define __STDC_MB_MIGHT_NEQ_WC__
+// WEBASSEMBLY32-NOT:#define __STDC_NO_ATOMICS__
+// WEBASSEMBLY32-NOT:#define __STDC_NO_COMPLEX__
+// WEBASSEMBLY32-NOT:#define __STDC_NO_VLA__
+// WEBASSEMBLY32-NOT:#define __STDC_NO_THREADS__
+// WEBASSEMBLY32-NEXT:#define __STDC_UTF_16__ 1{{$}}
+// WEBASSEMBLY32-NEXT:#define __STDC_UTF_32__ 1{{$}}
+// WEBASSEMBLY32-NEXT:#define __STDC_VERSION__ 201112L{{$}}
+// WEBASSEMBLY32-NEXT:#define __STDC__ 1{{$}}
+// WEBASSEMBLY32-NEXT:#define __UINT16_C_SUFFIX__ {{$}}
+// WEBASSEMBLY32-NEXT:#define __UINT16_FMTX__ "hX"{{$}}
+// WEBASSEMBLY32-NEXT:#define __UINT16_FMTo__ "ho"{{$}}
+// WEBASSEMBLY32-NEXT:#define __UINT16_FMTu__ "hu"{{$}}
+// WEBASSEMBLY32-NEXT:#define __UINT16_FMTx__ "hx"{{$}}
+// WEBASSEMBLY32-NEXT:#define __UINT16_MAX__ 65535{{$}}
+// WEBASSEMBLY32-NEXT:#define __UINT16_TYPE__ unsigned short{{$}}
+// WEBASSEMBLY32-NEXT:#define __UINT32_C_SUFFIX__ U{{$}}
+// WEBASSEMBLY32-NEXT:#define __UINT32_FMTX__ "X"{{$}}
+// WEBASSEMBLY32-NEXT:#define __UINT32_FMTo__ "o"{{$}}
+// WEBASSEMBLY32-NEXT:#define __UINT32_FMTu__ "u"{{$}}
+// WEBASSEMBLY32-NEXT:#define __UINT32_FMTx__ "x"{{$}}
+// WEBASSEMBLY32-NEXT:#define __UINT32_MAX__ 4294967295U{{$}}
+// WEBASSEMBLY32-NEXT:#define __UINT32_TYPE__ unsigned int{{$}}
+// WEBASSEMBLY32-NEXT:#define __UINT64_C_SUFFIX__ ULL{{$}}
+// WEBASSEMBLY32-NEXT:#define __UINT64_FMTX__ "llX"{{$}}
+// WEBASSEMBLY32-NEXT:#define __UINT64_FMTo__ "llo"{{$}}
+// WEBASSEMBLY32-NEXT:#define __UINT64_FMTu__ "llu"{{$}}
+// WEBASSEMBLY32-NEXT:#define __UINT64_FMTx__ "llx"{{$}}
+// WEBASSEMBLY32-NEXT:#define __UINT64_MAX__ 18446744073709551615ULL{{$}}
+// WEBASSEMBLY32-NEXT:#define __UINT64_TYPE__ long long unsigned int{{$}}
+// WEBASSEMBLY32-NEXT:#define __UINT8_C_SUFFIX__ {{$}}
+// WEBASSEMBLY32-NEXT:#define __UINT8_FMTX__ "hhX"{{$}}
+// WEBASSEMBLY32-NEXT:#define __UINT8_FMTo__ "hho"{{$}}
+// WEBASSEMBLY32-NEXT:#define __UINT8_FMTu__ "hhu"{{$}}
+// WEBASSEMBLY32-NEXT:#define __UINT8_FMTx__ "hhx"{{$}}
+// WEBASSEMBLY32-NEXT:#define __UINT8_MAX__ 255{{$}}
+// WEBASSEMBLY32-NEXT:#define __UINT8_TYPE__ unsigned char{{$}}
+// WEBASSEMBLY32-NEXT:#define __UINTMAX_C_SUFFIX__ ULL{{$}}
+// WEBASSEMBLY32-NEXT:#define __UINTMAX_FMTX__ "llX"{{$}}
+// WEBASSEMBLY32-NEXT:#define __UINTMAX_FMTo__ "llo"{{$}}
+// WEBASSEMBLY32-NEXT:#define __UINTMAX_FMTu__ "llu"{{$}}
+// WEBASSEMBLY32-NEXT:#define __UINTMAX_FMTx__ "llx"{{$}}
+// WEBASSEMBLY32-NEXT:#define __UINTMAX_MAX__ 18446744073709551615ULL{{$}}
+// WEBASSEMBLY32-NEXT:#define __UINTMAX_TYPE__ long long unsigned int{{$}}
+// WEBASSEMBLY32-NEXT:#define __UINTMAX_WIDTH__ 64{{$}}
+// WEBASSEMBLY32-NEXT:#define __UINTPTR_FMTX__ "lX"{{$}}
+// WEBASSEMBLY32-NEXT:#define __UINTPTR_FMTo__ "lo"{{$}}
+// WEBASSEMBLY32-NEXT:#define __UINTPTR_FMTu__ "lu"{{$}}
+// WEBASSEMBLY32-NEXT:#define __UINTPTR_FMTx__ "lx"{{$}}
+// WEBASSEMBLY32-NEXT:#define __UINTPTR_MAX__ 4294967295UL{{$}}
+// WEBASSEMBLY32-NEXT:#define __UINTPTR_TYPE__ long unsigned int{{$}}
+// WEBASSEMBLY32-NEXT:#define __UINTPTR_WIDTH__ 32{{$}}
+// WEBASSEMBLY32-NEXT:#define __UINT_FAST16_FMTX__ "hX"{{$}}
+// WEBASSEMBLY32-NEXT:#define __UINT_FAST16_FMTo__ "ho"{{$}}
+// WEBASSEMBLY32-NEXT:#define __UINT_FAST16_FMTu__ "hu"{{$}}
+// WEBASSEMBLY32-NEXT:#define __UINT_FAST16_FMTx__ "hx"{{$}}
+// WEBASSEMBLY32-NEXT:#define __UINT_FAST16_MAX__ 65535{{$}}
+// WEBASSEMBLY32-NEXT:#define __UINT_FAST16_TYPE__ unsigned short{{$}}
+// WEBASSEMBLY32-NEXT:#define __UINT_FAST32_FMTX__ "X"{{$}}
+// WEBASSEMBLY32-NEXT:#define __UINT_FAST32_FMTo__ "o"{{$}}
+// WEBASSEMBLY32-NEXT:#define __UINT_FAST32_FMTu__ "u"{{$}}
+// WEBASSEMBLY32-NEXT:#define __UINT_FAST32_FMTx__ "x"{{$}}
+// WEBASSEMBLY32-NEXT:#define __UINT_FAST32_MAX__ 4294967295U{{$}}
+// WEBASSEMBLY32-NEXT:#define __UINT_FAST32_TYPE__ unsigned int{{$}}
+// WEBASSEMBLY32-NEXT:#define __UINT_FAST64_FMTX__ "llX"{{$}}
+// WEBASSEMBLY32-NEXT:#define __UINT_FAST64_FMTo__ "llo"{{$}}
+// WEBASSEMBLY32-NEXT:#define __UINT_FAST64_FMTu__ "llu"{{$}}
+// WEBASSEMBLY32-NEXT:#define __UINT_FAST64_FMTx__ "llx"{{$}}
+// WEBASSEMBLY32-NEXT:#define __UINT_FAST64_MAX__ 18446744073709551615ULL{{$}}
+// WEBASSEMBLY32-NEXT:#define __UINT_FAST64_TYPE__ long long unsigned int{{$}}
+// WEBASSEMBLY32-NEXT:#define __UINT_FAST8_FMTX__ "hhX"{{$}}
+// WEBASSEMBLY32-NEXT:#define __UINT_FAST8_FMTo__ "hho"{{$}}
+// WEBASSEMBLY32-NEXT:#define __UINT_FAST8_FMTu__ "hhu"{{$}}
+// WEBASSEMBLY32-NEXT:#define __UINT_FAST8_FMTx__ "hhx"{{$}}
+// WEBASSEMBLY32-NEXT:#define __UINT_FAST8_MAX__ 255{{$}}
+// WEBASSEMBLY32-NEXT:#define __UINT_FAST8_TYPE__ unsigned char{{$}}
+// WEBASSEMBLY32-NEXT:#define __UINT_LEAST16_FMTX__ "hX"{{$}}
+// WEBASSEMBLY32-NEXT:#define __UINT_LEAST16_FMTo__ "ho"{{$}}
+// WEBASSEMBLY32-NEXT:#define __UINT_LEAST16_FMTu__ "hu"{{$}}
+// WEBASSEMBLY32-NEXT:#define __UINT_LEAST16_FMTx__ "hx"{{$}}
+// WEBASSEMBLY32-NEXT:#define __UINT_LEAST16_MAX__ 65535{{$}}
+// WEBASSEMBLY32-NEXT:#define __UINT_LEAST16_TYPE__ unsigned short{{$}}
+// WEBASSEMBLY32-NEXT:#define __UINT_LEAST32_FMTX__ "X"{{$}}
+// WEBASSEMBLY32-NEXT:#define __UINT_LEAST32_FMTo__ "o"{{$}}
+// WEBASSEMBLY32-NEXT:#define __UINT_LEAST32_FMTu__ "u"{{$}}
+// WEBASSEMBLY32-NEXT:#define __UINT_LEAST32_FMTx__ "x"{{$}}
+// WEBASSEMBLY32-NEXT:#define __UINT_LEAST32_MAX__ 4294967295U{{$}}
+// WEBASSEMBLY32-NEXT:#define __UINT_LEAST32_TYPE__ unsigned int{{$}}
+// WEBASSEMBLY32-NEXT:#define __UINT_LEAST64_FMTX__ "llX"{{$}}
+// WEBASSEMBLY32-NEXT:#define __UINT_LEAST64_FMTo__ "llo"{{$}}
+// WEBASSEMBLY32-NEXT:#define __UINT_LEAST64_FMTu__ "llu"{{$}}
+// WEBASSEMBLY32-NEXT:#define __UINT_LEAST64_FMTx__ "llx"{{$}}
+// WEBASSEMBLY32-NEXT:#define __UINT_LEAST64_MAX__ 18446744073709551615ULL{{$}}
+// WEBASSEMBLY32-NEXT:#define __UINT_LEAST64_TYPE__ long long unsigned int{{$}}
+// WEBASSEMBLY32-NEXT:#define __UINT_LEAST8_FMTX__ "hhX"{{$}}
+// WEBASSEMBLY32-NEXT:#define __UINT_LEAST8_FMTo__ "hho"{{$}}
+// WEBASSEMBLY32-NEXT:#define __UINT_LEAST8_FMTu__ "hhu"{{$}}
+// WEBASSEMBLY32-NEXT:#define __UINT_LEAST8_FMTx__ "hhx"{{$}}
+// WEBASSEMBLY32-NEXT:#define __UINT_LEAST8_MAX__ 255{{$}}
+// WEBASSEMBLY32-NEXT:#define __UINT_LEAST8_TYPE__ unsigned char{{$}}
+// WEBASSEMBLY32-NEXT:#define __USER_LABEL_PREFIX__ {{$}}
+// WEBASSEMBLY32-NEXT:#define __VERSION__ "{{.*}}"{{$}}
+// WEBASSEMBLY32-NEXT:#define __WCHAR_MAX__ 2147483647{{$}}
+// WEBASSEMBLY32-NEXT:#define __WCHAR_TYPE__ int{{$}}
+// WEBASSEMBLY32-NOT:#define __WCHAR_UNSIGNED__
+// WEBASSEMBLY32-NEXT:#define __WCHAR_WIDTH__ 32{{$}}
+// WEBASSEMBLY32-NEXT:#define __WINT_TYPE__ int{{$}}
+// WEBASSEMBLY32-NOT:#define __WINT_UNSIGNED__
+// WEBASSEMBLY32-NEXT:#define __WINT_WIDTH__ 32{{$}}
+// WEBASSEMBLY32-NEXT:#define __clang__ 1{{$}}
+// WEBASSEMBLY32-NEXT:#define __clang_major__ {{.}}
+// WEBASSEMBLY32-NEXT:#define __clang_minor__ {{.}}
+// WEBASSEMBLY32-NEXT:#define __clang_patchlevel__ {{.}}
+// WEBASSEMBLY32-NEXT:#define __clang_version__ "{{.*}}"{{$}}
+// WEBASSEMBLY32-NEXT:#define __llvm__ 1{{$}}
+// WEBASSEMBLY32-NOT:#define __wasm_simd128__
+// WEBASSEMBLY32-NOT:#define __wasm_simd256__
+// WEBASSEMBLY32-NOT:#define __wasm_simd512__
+// WEBASSEMBLY32-NOT:#define __unix
+// WEBASSEMBLY32-NOT:#define __unix__
+// WEBASSEMBLY32-NEXT:#define __wasm 1{{$}}
+// WEBASSEMBLY32-NEXT:#define __wasm32 1{{$}}
+// WEBASSEMBLY32-NEXT:#define __wasm32__ 1{{$}}
+// WEBASSEMBLY32-NOT:#define __wasm64
+// WEBASSEMBLY32-NOT:#define __wasm64__
+// WEBASSEMBLY32-NEXT:#define __wasm__ 1{{$}}
+//
+// RUN: %clang_cc1 -E -dM -ffreestanding -triple=wasm64-unknown-unknown \
+// RUN:   < /dev/null \
+// RUN:   | FileCheck -check-prefix=WEBASSEMBLY64 %s
+//
+// WEBASSEMBLY64-NOT:#define _ILP32
+// WEBASSEMBLY64:#define _LP64 1{{$}}
+// WEBASSEMBLY64-NEXT:#define __ATOMIC_ACQUIRE 2{{$}}
+// WEBASSEMBLY64-NEXT:#define __ATOMIC_ACQ_REL 4{{$}}
+// WEBASSEMBLY64-NEXT:#define __ATOMIC_CONSUME 1{{$}}
+// WEBASSEMBLY64-NEXT:#define __ATOMIC_RELAXED 0{{$}}
+// WEBASSEMBLY64-NEXT:#define __ATOMIC_RELEASE 3{{$}}
+// WEBASSEMBLY64-NEXT:#define __ATOMIC_SEQ_CST 5{{$}}
+// WEBASSEMBLY64-NEXT:#define __BIGGEST_ALIGNMENT__ 16{{$}}
+// WEBASSEMBLY64-NEXT:#define __BYTE_ORDER__ __ORDER_LITTLE_ENDIAN__{{$}}
+// WEBASSEMBLY64-NEXT:#define __CHAR16_TYPE__ unsigned short{{$}}
+// WEBASSEMBLY64-NEXT:#define __CHAR32_TYPE__ unsigned int{{$}}
+// WEBASSEMBLY64-NEXT:#define __CHAR_BIT__ 8{{$}}
+// WEBASSEMBLY64-NOT:#define __CHAR_UNSIGNED__
+// WEBASSEMBLY64-NEXT:#define __CONSTANT_CFSTRINGS__ 1{{$}}
+// WEBASSEMBLY64-NEXT:#define __DBL_DECIMAL_DIG__ 17{{$}}
+// WEBASSEMBLY64-NEXT:#define __DBL_DENORM_MIN__ 4.9406564584124654e-324{{$}}
+// WEBASSEMBLY64-NEXT:#define __DBL_DIG__ 15{{$}}
+// WEBASSEMBLY64-NEXT:#define __DBL_EPSILON__ 2.2204460492503131e-16{{$}}
+// WEBASSEMBLY64-NEXT:#define __DBL_HAS_DENORM__ 1{{$}}
+// WEBASSEMBLY64-NEXT:#define __DBL_HAS_INFINITY__ 1{{$}}
+// WEBASSEMBLY64-NEXT:#define __DBL_HAS_QUIET_NAN__ 1{{$}}
+// WEBASSEMBLY64-NEXT:#define __DBL_MANT_DIG__ 53{{$}}
+// WEBASSEMBLY64-NEXT:#define __DBL_MAX_10_EXP__ 308{{$}}
+// WEBASSEMBLY64-NEXT:#define __DBL_MAX_EXP__ 1024{{$}}
+// WEBASSEMBLY64-NEXT:#define __DBL_MAX__ 1.7976931348623157e+308{{$}}
+// WEBASSEMBLY64-NEXT:#define __DBL_MIN_10_EXP__ (-307){{$}}
+// WEBASSEMBLY64-NEXT:#define __DBL_MIN_EXP__ (-1021){{$}}
+// WEBASSEMBLY64-NEXT:#define __DBL_MIN__ 2.2250738585072014e-308{{$}}
+// WEBASSEMBLY64-NEXT:#define __DECIMAL_DIG__ __LDBL_DECIMAL_DIG__{{$}}
+// WEBASSEMBLY64-NOT:#define __ELF__
+// WEBASSEMBLY64-NEXT:#define __FINITE_MATH_ONLY__ 0{{$}}
+// WEBASSEMBLY64-NEXT:#define __FLT_DECIMAL_DIG__ 9{{$}}
+// WEBASSEMBLY64-NEXT:#define __FLT_DENORM_MIN__ 1.40129846e-45F{{$}}
+// WEBASSEMBLY64-NEXT:#define __FLT_DIG__ 6{{$}}
+// WEBASSEMBLY64-NEXT:#define __FLT_EPSILON__ 1.19209290e-7F{{$}}
+// WEBASSEMBLY64-NEXT:#define __FLT_EVAL_METHOD__ 0{{$}}
+// WEBASSEMBLY64-NEXT:#define __FLT_HAS_DENORM__ 1{{$}}
+// WEBASSEMBLY64-NEXT:#define __FLT_HAS_INFINITY__ 1{{$}}
+// WEBASSEMBLY64-NEXT:#define __FLT_HAS_QUIET_NAN__ 1{{$}}
+// WEBASSEMBLY64-NEXT:#define __FLT_MANT_DIG__ 24{{$}}
+// WEBASSEMBLY64-NEXT:#define __FLT_MAX_10_EXP__ 38{{$}}
+// WEBASSEMBLY64-NEXT:#define __FLT_MAX_EXP__ 128{{$}}
+// WEBASSEMBLY64-NEXT:#define __FLT_MAX__ 3.40282347e+38F{{$}}
+// WEBASSEMBLY64-NEXT:#define __FLT_MIN_10_EXP__ (-37){{$}}
+// WEBASSEMBLY64-NEXT:#define __FLT_MIN_EXP__ (-125){{$}}
+// WEBASSEMBLY64-NEXT:#define __FLT_MIN__ 1.17549435e-38F{{$}}
+// WEBASSEMBLY64-NEXT:#define __FLT_RADIX__ 2{{$}}
+// WEBASSEMBLY64-NEXT:#define __GCC_ATOMIC_BOOL_LOCK_FREE 1{{$}}
+// WEBASSEMBLY64-NEXT:#define __GCC_ATOMIC_CHAR16_T_LOCK_FREE 1{{$}}
+// WEBASSEMBLY64-NEXT:#define __GCC_ATOMIC_CHAR32_T_LOCK_FREE 1{{$}}
+// WEBASSEMBLY64-NEXT:#define __GCC_ATOMIC_CHAR_LOCK_FREE 1{{$}}
+// WEBASSEMBLY64-NEXT:#define __GCC_ATOMIC_INT_LOCK_FREE 1{{$}}
+// WEBASSEMBLY64-NEXT:#define __GCC_ATOMIC_LLONG_LOCK_FREE 1{{$}}
+// WEBASSEMBLY64-NEXT:#define __GCC_ATOMIC_LONG_LOCK_FREE 1{{$}}
+// WEBASSEMBLY64-NEXT:#define __GCC_ATOMIC_POINTER_LOCK_FREE 1{{$}}
+// WEBASSEMBLY64-NEXT:#define __GCC_ATOMIC_SHORT_LOCK_FREE 1{{$}}
+// WEBASSEMBLY64-NEXT:#define __GCC_ATOMIC_TEST_AND_SET_TRUEVAL 1{{$}}
+// WEBASSEMBLY64-NEXT:#define __GCC_ATOMIC_WCHAR_T_LOCK_FREE 1{{$}}
+// WEBASSEMBLY64-NEXT:#define __GNUC_MINOR__ {{.}}
+// WEBASSEMBLY64-NEXT:#define __GNUC_PATCHLEVEL__ {{.}}
+// WEBASSEMBLY64-NEXT:#define __GNUC_STDC_INLINE__ 1{{$}}
+// WEBASSEMBLY64-NEXT:#define __GNUC__ {{.}}
+// WEBASSEMBLY64-NEXT:#define __GXX_ABI_VERSION 1002{{$}}
+// WEBASSEMBLY64-NEXT:#define __GXX_RTTI 1{{$}}
+// WEBASSEMBLY64-NOT:#define __ILP32__
+// WEBASSEMBLY64-NEXT:#define __INT16_C_SUFFIX__ {{$}}
+// WEBASSEMBLY64-NEXT:#define __INT16_FMTd__ "hd"{{$}}
+// WEBASSEMBLY64-NEXT:#define __INT16_FMTi__ "hi"{{$}}
+// WEBASSEMBLY64-NEXT:#define __INT16_MAX__ 32767{{$}}
+// WEBASSEMBLY64-NEXT:#define __INT16_TYPE__ short{{$}}
+// WEBASSEMBLY64-NEXT:#define __INT32_C_SUFFIX__ {{$}}
+// WEBASSEMBLY64-NEXT:#define __INT32_FMTd__ "d"{{$}}
+// WEBASSEMBLY64-NEXT:#define __INT32_FMTi__ "i"{{$}}
+// WEBASSEMBLY64-NEXT:#define __INT32_MAX__ 2147483647{{$}}
+// WEBASSEMBLY64-NEXT:#define __INT32_TYPE__ int{{$}}
+// WEBASSEMBLY64-NEXT:#define __INT64_C_SUFFIX__ LL{{$}}
+// WEBASSEMBLY64-NEXT:#define __INT64_FMTd__ "lld"{{$}}
+// WEBASSEMBLY64-NEXT:#define __INT64_FMTi__ "lli"{{$}}
+// WEBASSEMBLY64-NEXT:#define __INT64_MAX__ 9223372036854775807LL{{$}}
+// WEBASSEMBLY64-NEXT:#define __INT64_TYPE__ long long int{{$}}
+// WEBASSEMBLY64-NEXT:#define __INT8_C_SUFFIX__ {{$}}
+// WEBASSEMBLY64-NEXT:#define __INT8_FMTd__ "hhd"{{$}}
+// WEBASSEMBLY64-NEXT:#define __INT8_FMTi__ "hhi"{{$}}
+// WEBASSEMBLY64-NEXT:#define __INT8_MAX__ 127{{$}}
+// WEBASSEMBLY64-NEXT:#define __INT8_TYPE__ signed char{{$}}
+// WEBASSEMBLY64-NEXT:#define __INTMAX_C_SUFFIX__ LL{{$}}
+// WEBASSEMBLY64-NEXT:#define __INTMAX_FMTd__ "lld"{{$}}
+// WEBASSEMBLY64-NEXT:#define __INTMAX_FMTi__ "lli"{{$}}
+// WEBASSEMBLY64-NEXT:#define __INTMAX_MAX__ 9223372036854775807LL{{$}}
+// WEBASSEMBLY64-NEXT:#define __INTMAX_TYPE__ long long int{{$}}
+// WEBASSEMBLY64-NEXT:#define __INTMAX_WIDTH__ 64{{$}}
+// WEBASSEMBLY64-NEXT:#define __INTPTR_FMTd__ "ld"{{$}}
+// WEBASSEMBLY64-NEXT:#define __INTPTR_FMTi__ "li"{{$}}
+// WEBASSEMBLY64-NEXT:#define __INTPTR_MAX__ 9223372036854775807L{{$}}
+// WEBASSEMBLY64-NEXT:#define __INTPTR_TYPE__ long int{{$}}
+// WEBASSEMBLY64-NEXT:#define __INTPTR_WIDTH__ 64{{$}}
+// WEBASSEMBLY64-NEXT:#define __INT_FAST16_FMTd__ "hd"{{$}}
+// WEBASSEMBLY64-NEXT:#define __INT_FAST16_FMTi__ "hi"{{$}}
+// WEBASSEMBLY64-NEXT:#define __INT_FAST16_MAX__ 32767{{$}}
+// WEBASSEMBLY64-NEXT:#define __INT_FAST16_TYPE__ short{{$}}
+// WEBASSEMBLY64-NEXT:#define __INT_FAST32_FMTd__ "d"{{$}}
+// WEBASSEMBLY64-NEXT:#define __INT_FAST32_FMTi__ "i"{{$}}
+// WEBASSEMBLY64-NEXT:#define __INT_FAST32_MAX__ 2147483647{{$}}
+// WEBASSEMBLY64-NEXT:#define __INT_FAST32_TYPE__ int{{$}}
+// WEBASSEMBLY64-NEXT:#define __INT_FAST64_FMTd__ "ld"{{$}}
+// WEBASSEMBLY64-NEXT:#define __INT_FAST64_FMTi__ "li"{{$}}
+// WEBASSEMBLY64-NEXT:#define __INT_FAST64_MAX__ 9223372036854775807L{{$}}
+// WEBASSEMBLY64-NEXT:#define __INT_FAST64_TYPE__ long int{{$}}
+// WEBASSEMBLY64-NEXT:#define __INT_FAST8_FMTd__ "hhd"{{$}}
+// WEBASSEMBLY64-NEXT:#define __INT_FAST8_FMTi__ "hhi"{{$}}
+// WEBASSEMBLY64-NEXT:#define __INT_FAST8_MAX__ 127{{$}}
+// WEBASSEMBLY64-NEXT:#define __INT_FAST8_TYPE__ signed char{{$}}
+// WEBASSEMBLY64-NEXT:#define __INT_LEAST16_FMTd__ "hd"{{$}}
+// WEBASSEMBLY64-NEXT:#define __INT_LEAST16_FMTi__ "hi"{{$}}
+// WEBASSEMBLY64-NEXT:#define __INT_LEAST16_MAX__ 32767{{$}}
+// WEBASSEMBLY64-NEXT:#define __INT_LEAST16_TYPE__ short{{$}}
+// WEBASSEMBLY64-NEXT:#define __INT_LEAST32_FMTd__ "d"{{$}}
+// WEBASSEMBLY64-NEXT:#define __INT_LEAST32_FMTi__ "i"{{$}}
+// WEBASSEMBLY64-NEXT:#define __INT_LEAST32_MAX__ 2147483647{{$}}
+// WEBASSEMBLY64-NEXT:#define __INT_LEAST32_TYPE__ int{{$}}
+// WEBASSEMBLY64-NEXT:#define __INT_LEAST64_FMTd__ "ld"{{$}}
+// WEBASSEMBLY64-NEXT:#define __INT_LEAST64_FMTi__ "li"{{$}}
+// WEBASSEMBLY64-NEXT:#define __INT_LEAST64_MAX__ 9223372036854775807L{{$}}
+// WEBASSEMBLY64-NEXT:#define __INT_LEAST64_TYPE__ long int{{$}}
+// WEBASSEMBLY64-NEXT:#define __INT_LEAST8_FMTd__ "hhd"{{$}}
+// WEBASSEMBLY64-NEXT:#define __INT_LEAST8_FMTi__ "hhi"{{$}}
+// WEBASSEMBLY64-NEXT:#define __INT_LEAST8_MAX__ 127{{$}}
+// WEBASSEMBLY64-NEXT:#define __INT_LEAST8_TYPE__ signed char{{$}}
+// WEBASSEMBLY64-NEXT:#define __INT_MAX__ 2147483647{{$}}
+// WEBASSEMBLY64-NEXT:#define __LDBL_DECIMAL_DIG__ 17{{$}}
+// WEBASSEMBLY64-NEXT:#define __LDBL_DENORM_MIN__ 4.9406564584124654e-324L{{$}}
+// WEBASSEMBLY64-NEXT:#define __LDBL_DIG__ 15{{$}}
+// WEBASSEMBLY64-NEXT:#define __LDBL_EPSILON__ 2.2204460492503131e-16L{{$}}
+// WEBASSEMBLY64-NEXT:#define __LDBL_HAS_DENORM__ 1{{$}}
+// WEBASSEMBLY64-NEXT:#define __LDBL_HAS_INFINITY__ 1{{$}}
+// WEBASSEMBLY64-NEXT:#define __LDBL_HAS_QUIET_NAN__ 1{{$}}
+// WEBASSEMBLY64-NEXT:#define __LDBL_MANT_DIG__ 53{{$}}
+// WEBASSEMBLY64-NEXT:#define __LDBL_MAX_10_EXP__ 308{{$}}
+// WEBASSEMBLY64-NEXT:#define __LDBL_MAX_EXP__ 1024{{$}}
+// WEBASSEMBLY64-NEXT:#define __LDBL_MAX__ 1.7976931348623157e+308L{{$}}
+// WEBASSEMBLY64-NEXT:#define __LDBL_MIN_10_EXP__ (-307){{$}}
+// WEBASSEMBLY64-NEXT:#define __LDBL_MIN_EXP__ (-1021){{$}}
+// WEBASSEMBLY64-NEXT:#define __LDBL_MIN__ 2.2250738585072014e-308L{{$}}
+// WEBASSEMBLY64-NEXT:#define __LITTLE_ENDIAN__ 1{{$}}
+// WEBASSEMBLY64-NEXT:#define __LONG_LONG_MAX__ 9223372036854775807LL{{$}}
+// WEBASSEMBLY64-NEXT:#define __LONG_MAX__ 9223372036854775807L{{$}}
+// WEBASSEMBLY64-NEXT:#define __LP64__ 1{{$}}
+// WEBASSEMBLY64-NEXT:#define __NO_INLINE__ 1{{$}}
+// WEBASSEMBLY64-NEXT:#define __ORDER_BIG_ENDIAN__ 4321{{$}}
+// WEBASSEMBLY64-NEXT:#define __ORDER_LITTLE_ENDIAN__ 1234{{$}}
+// WEBASSEMBLY64-NEXT:#define __ORDER_PDP_ENDIAN__ 3412{{$}}
+// WEBASSEMBLY64-NEXT:#define __POINTER_WIDTH__ 64{{$}}
+// WEBASSEMBLY64-NEXT:#define __PRAGMA_REDEFINE_EXTNAME 1{{$}}
+// WEBASSEMBLY64-NEXT:#define __PTRDIFF_FMTd__ "ld"{{$}}
+// WEBASSEMBLY64-NEXT:#define __PTRDIFF_FMTi__ "li"{{$}}
+// WEBASSEMBLY64-NEXT:#define __PTRDIFF_MAX__ 9223372036854775807L{{$}}
+// WEBASSEMBLY64-NEXT:#define __PTRDIFF_TYPE__ long int{{$}}
+// WEBASSEMBLY64-NEXT:#define __PTRDIFF_WIDTH__ 64{{$}}
+// WEBASSEMBLY64-NOT:#define __REGISTER_PREFIX__
+// WEBASSEMBLY64-NEXT:#define __SCHAR_MAX__ 127{{$}}
+// WEBASSEMBLY64-NEXT:#define __SHRT_MAX__ 32767{{$}}
+// WEBASSEMBLY64-NEXT:#define __SIG_ATOMIC_MAX__ 2147483647{{$}}
+// WEBASSEMBLY64-NEXT:#define __SIG_ATOMIC_WIDTH__ 32{{$}}
+// WEBASSEMBLY64-NEXT:#define __SIZEOF_DOUBLE__ 8{{$}}
+// WEBASSEMBLY64-NEXT:#define __SIZEOF_FLOAT__ 4{{$}}
+// WEBASSEMBLY64-NEXT:#define __SIZEOF_INT128__ 16{{$}}
+// WEBASSEMBLY64-NEXT:#define __SIZEOF_INT__ 4{{$}}
+// WEBASSEMBLY64-NEXT:#define __SIZEOF_LONG_DOUBLE__ 8{{$}}
+// WEBASSEMBLY64-NEXT:#define __SIZEOF_LONG_LONG__ 8{{$}}
+// WEBASSEMBLY64-NEXT:#define __SIZEOF_LONG__ 8{{$}}
+// WEBASSEMBLY64-NEXT:#define __SIZEOF_POINTER__ 8{{$}}
+// WEBASSEMBLY64-NEXT:#define __SIZEOF_PTRDIFF_T__ 8{{$}}
+// WEBASSEMBLY64-NEXT:#define __SIZEOF_SHORT__ 2{{$}}
+// WEBASSEMBLY64-NEXT:#define __SIZEOF_SIZE_T__ 8{{$}}
+// WEBASSEMBLY64-NEXT:#define __SIZEOF_WCHAR_T__ 4{{$}}
+// WEBASSEMBLY64-NEXT:#define __SIZEOF_WINT_T__ 4{{$}}
+// WEBASSEMBLY64-NEXT:#define __SIZE_FMTX__ "lX"{{$}}
+// WEBASSEMBLY64-NEXT:#define __SIZE_FMTo__ "lo"{{$}}
+// WEBASSEMBLY64-NEXT:#define __SIZE_FMTu__ "lu"{{$}}
+// WEBASSEMBLY64-NEXT:#define __SIZE_FMTx__ "lx"{{$}}
+// WEBASSEMBLY64-NEXT:#define __SIZE_MAX__ 18446744073709551615UL{{$}}
+// WEBASSEMBLY64-NEXT:#define __SIZE_TYPE__ long unsigned int{{$}}
+// WEBASSEMBLY64-NEXT:#define __SIZE_WIDTH__ 64{{$}}
+// WEBASSEMBLY64-NEXT:#define __STDC_HOSTED__ 0{{$}}
+// WEBASSEMBLY64-NOT:#define __STDC_MB_MIGHT_NEQ_WC__
+// WEBASSEMBLY64-NOT:#define __STDC_NO_ATOMICS__
+// WEBASSEMBLY64-NOT:#define __STDC_NO_COMPLEX__
+// WEBASSEMBLY64-NOT:#define __STDC_NO_VLA__
+// WEBASSEMBLY64-NOT:#define __STDC_NO_THREADS__
+// WEBASSEMBLY64-NEXT:#define __STDC_UTF_16__ 1{{$}}
+// WEBASSEMBLY64-NEXT:#define __STDC_UTF_32__ 1{{$}}
+// WEBASSEMBLY64-NEXT:#define __STDC_VERSION__ 201112L{{$}}
+// WEBASSEMBLY64-NEXT:#define __STDC__ 1{{$}}
+// WEBASSEMBLY64-NEXT:#define __UINT16_C_SUFFIX__ {{$}}
+// WEBASSEMBLY64-NEXT:#define __UINT16_FMTX__ "hX"{{$}}
+// WEBASSEMBLY64-NEXT:#define __UINT16_FMTo__ "ho"{{$}}
+// WEBASSEMBLY64-NEXT:#define __UINT16_FMTu__ "hu"{{$}}
+// WEBASSEMBLY64-NEXT:#define __UINT16_FMTx__ "hx"{{$}}
+// WEBASSEMBLY64-NEXT:#define __UINT16_MAX__ 65535{{$}}
+// WEBASSEMBLY64-NEXT:#define __UINT16_TYPE__ unsigned short{{$}}
+// WEBASSEMBLY64-NEXT:#define __UINT32_C_SUFFIX__ U{{$}}
+// WEBASSEMBLY64-NEXT:#define __UINT32_FMTX__ "X"{{$}}
+// WEBASSEMBLY64-NEXT:#define __UINT32_FMTo__ "o"{{$}}
+// WEBASSEMBLY64-NEXT:#define __UINT32_FMTu__ "u"{{$}}
+// WEBASSEMBLY64-NEXT:#define __UINT32_FMTx__ "x"{{$}}
+// WEBASSEMBLY64-NEXT:#define __UINT32_MAX__ 4294967295U{{$}}
+// WEBASSEMBLY64-NEXT:#define __UINT32_TYPE__ unsigned int{{$}}
+// WEBASSEMBLY64-NEXT:#define __UINT64_C_SUFFIX__ ULL{{$}}
+// WEBASSEMBLY64-NEXT:#define __UINT64_FMTX__ "llX"{{$}}
+// WEBASSEMBLY64-NEXT:#define __UINT64_FMTo__ "llo"{{$}}
+// WEBASSEMBLY64-NEXT:#define __UINT64_FMTu__ "llu"{{$}}
+// WEBASSEMBLY64-NEXT:#define __UINT64_FMTx__ "llx"{{$}}
+// WEBASSEMBLY64-NEXT:#define __UINT64_MAX__ 18446744073709551615ULL{{$}}
+// WEBASSEMBLY64-NEXT:#define __UINT64_TYPE__ long long unsigned int{{$}}
+// WEBASSEMBLY64-NEXT:#define __UINT8_C_SUFFIX__ {{$}}
+// WEBASSEMBLY64-NEXT:#define __UINT8_FMTX__ "hhX"{{$}}
+// WEBASSEMBLY64-NEXT:#define __UINT8_FMTo__ "hho"{{$}}
+// WEBASSEMBLY64-NEXT:#define __UINT8_FMTu__ "hhu"{{$}}
+// WEBASSEMBLY64-NEXT:#define __UINT8_FMTx__ "hhx"{{$}}
+// WEBASSEMBLY64-NEXT:#define __UINT8_MAX__ 255{{$}}
+// WEBASSEMBLY64-NEXT:#define __UINT8_TYPE__ unsigned char{{$}}
+// WEBASSEMBLY64-NEXT:#define __UINTMAX_C_SUFFIX__ ULL{{$}}
+// WEBASSEMBLY64-NEXT:#define __UINTMAX_FMTX__ "llX"{{$}}
+// WEBASSEMBLY64-NEXT:#define __UINTMAX_FMTo__ "llo"{{$}}
+// WEBASSEMBLY64-NEXT:#define __UINTMAX_FMTu__ "llu"{{$}}
+// WEBASSEMBLY64-NEXT:#define __UINTMAX_FMTx__ "llx"{{$}}
+// WEBASSEMBLY64-NEXT:#define __UINTMAX_MAX__ 18446744073709551615ULL{{$}}
+// WEBASSEMBLY64-NEXT:#define __UINTMAX_TYPE__ long long unsigned int{{$}}
+// WEBASSEMBLY64-NEXT:#define __UINTMAX_WIDTH__ 64{{$}}
+// WEBASSEMBLY64-NEXT:#define __UINTPTR_FMTX__ "lX"{{$}}
+// WEBASSEMBLY64-NEXT:#define __UINTPTR_FMTo__ "lo"{{$}}
+// WEBASSEMBLY64-NEXT:#define __UINTPTR_FMTu__ "lu"{{$}}
+// WEBASSEMBLY64-NEXT:#define __UINTPTR_FMTx__ "lx"{{$}}
+// WEBASSEMBLY64-NEXT:#define __UINTPTR_MAX__ 18446744073709551615UL{{$}}
+// WEBASSEMBLY64-NEXT:#define __UINTPTR_TYPE__ long unsigned int{{$}}
+// WEBASSEMBLY64-NEXT:#define __UINTPTR_WIDTH__ 64{{$}}
+// WEBASSEMBLY64-NEXT:#define __UINT_FAST16_FMTX__ "hX"{{$}}
+// WEBASSEMBLY64-NEXT:#define __UINT_FAST16_FMTo__ "ho"{{$}}
+// WEBASSEMBLY64-NEXT:#define __UINT_FAST16_FMTu__ "hu"{{$}}
+// WEBASSEMBLY64-NEXT:#define __UINT_FAST16_FMTx__ "hx"{{$}}
+// WEBASSEMBLY64-NEXT:#define __UINT_FAST16_MAX__ 65535{{$}}
+// WEBASSEMBLY64-NEXT:#define __UINT_FAST16_TYPE__ unsigned short{{$}}
+// WEBASSEMBLY64-NEXT:#define __UINT_FAST32_FMTX__ "X"{{$}}
+// WEBASSEMBLY64-NEXT:#define __UINT_FAST32_FMTo__ "o"{{$}}
+// WEBASSEMBLY64-NEXT:#define __UINT_FAST32_FMTu__ "u"{{$}}
+// WEBASSEMBLY64-NEXT:#define __UINT_FAST32_FMTx__ "x"{{$}}
+// WEBASSEMBLY64-NEXT:#define __UINT_FAST32_MAX__ 4294967295U{{$}}
+// WEBASSEMBLY64-NEXT:#define __UINT_FAST32_TYPE__ unsigned int{{$}}
+// WEBASSEMBLY64-NEXT:#define __UINT_FAST64_FMTX__ "lX"{{$}}
+// WEBASSEMBLY64-NEXT:#define __UINT_FAST64_FMTo__ "lo"{{$}}
+// WEBASSEMBLY64-NEXT:#define __UINT_FAST64_FMTu__ "lu"{{$}}
+// WEBASSEMBLY64-NEXT:#define __UINT_FAST64_FMTx__ "lx"{{$}}
+// WEBASSEMBLY64-NEXT:#define __UINT_FAST64_MAX__ 18446744073709551615UL{{$}}
+// WEBASSEMBLY64-NEXT:#define __UINT_FAST64_TYPE__ long unsigned int{{$}}
+// WEBASSEMBLY64-NEXT:#define __UINT_FAST8_FMTX__ "hhX"{{$}}
+// WEBASSEMBLY64-NEXT:#define __UINT_FAST8_FMTo__ "hho"{{$}}
+// WEBASSEMBLY64-NEXT:#define __UINT_FAST8_FMTu__ "hhu"{{$}}
+// WEBASSEMBLY64-NEXT:#define __UINT_FAST8_FMTx__ "hhx"{{$}}
+// WEBASSEMBLY64-NEXT:#define __UINT_FAST8_MAX__ 255{{$}}
+// WEBASSEMBLY64-NEXT:#define __UINT_FAST8_TYPE__ unsigned char{{$}}
+// WEBASSEMBLY64-NEXT:#define __UINT_LEAST16_FMTX__ "hX"{{$}}
+// WEBASSEMBLY64-NEXT:#define __UINT_LEAST16_FMTo__ "ho"{{$}}
+// WEBASSEMBLY64-NEXT:#define __UINT_LEAST16_FMTu__ "hu"{{$}}
+// WEBASSEMBLY64-NEXT:#define __UINT_LEAST16_FMTx__ "hx"{{$}}
+// WEBASSEMBLY64-NEXT:#define __UINT_LEAST16_MAX__ 65535{{$}}
+// WEBASSEMBLY64-NEXT:#define __UINT_LEAST16_TYPE__ unsigned short{{$}}
+// WEBASSEMBLY64-NEXT:#define __UINT_LEAST32_FMTX__ "X"{{$}}
+// WEBASSEMBLY64-NEXT:#define __UINT_LEAST32_FMTo__ "o"{{$}}
+// WEBASSEMBLY64-NEXT:#define __UINT_LEAST32_FMTu__ "u"{{$}}
+// WEBASSEMBLY64-NEXT:#define __UINT_LEAST32_FMTx__ "x"{{$}}
+// WEBASSEMBLY64-NEXT:#define __UINT_LEAST32_MAX__ 4294967295U{{$}}
+// WEBASSEMBLY64-NEXT:#define __UINT_LEAST32_TYPE__ unsigned int{{$}}
+// WEBASSEMBLY64-NEXT:#define __UINT_LEAST64_FMTX__ "lX"{{$}}
+// WEBASSEMBLY64-NEXT:#define __UINT_LEAST64_FMTo__ "lo"{{$}}
+// WEBASSEMBLY64-NEXT:#define __UINT_LEAST64_FMTu__ "lu"{{$}}
+// WEBASSEMBLY64-NEXT:#define __UINT_LEAST64_FMTx__ "lx"{{$}}
+// WEBASSEMBLY64-NEXT:#define __UINT_LEAST64_MAX__ 18446744073709551615UL{{$}}
+// WEBASSEMBLY64-NEXT:#define __UINT_LEAST64_TYPE__ long unsigned int{{$}}
+// WEBASSEMBLY64-NEXT:#define __UINT_LEAST8_FMTX__ "hhX"{{$}}
+// WEBASSEMBLY64-NEXT:#define __UINT_LEAST8_FMTo__ "hho"{{$}}
+// WEBASSEMBLY64-NEXT:#define __UINT_LEAST8_FMTu__ "hhu"{{$}}
+// WEBASSEMBLY64-NEXT:#define __UINT_LEAST8_FMTx__ "hhx"{{$}}
+// WEBASSEMBLY64-NEXT:#define __UINT_LEAST8_MAX__ 255{{$}}
+// WEBASSEMBLY64-NEXT:#define __UINT_LEAST8_TYPE__ unsigned char{{$}}
+// WEBASSEMBLY64-NEXT:#define __USER_LABEL_PREFIX__ {{$}}
+// WEBASSEMBLY64-NEXT:#define __VERSION__ "{{.*}}"{{$}}
+// WEBASSEMBLY64-NEXT:#define __WCHAR_MAX__ 2147483647{{$}}
+// WEBASSEMBLY64-NEXT:#define __WCHAR_TYPE__ int{{$}}
+// WEBASSEMBLY64-NOT:#define __WCHAR_UNSIGNED__
+// WEBASSEMBLY64-NEXT:#define __WCHAR_WIDTH__ 32{{$}}
+// WEBASSEMBLY64-NEXT:#define __WINT_TYPE__ int{{$}}
+// WEBASSEMBLY64-NOT:#define __WINT_UNSIGNED__
+// WEBASSEMBLY64-NEXT:#define __WINT_WIDTH__ 32{{$}}
+// WEBASSEMBLY64-NEXT:#define __clang__ 1{{$}}
+// WEBASSEMBLY64-NEXT:#define __clang_major__ {{.}}
+// WEBASSEMBLY64-NEXT:#define __clang_minor__ {{.}}
+// WEBASSEMBLY64-NEXT:#define __clang_patchlevel__ {{.}}
+// WEBASSEMBLY64-NEXT:#define __clang_version__ "{{.*}}"{{$}}
+// WEBASSEMBLY64-NEXT:#define __llvm__ 1{{$}}
+// WEBASSEMBLY64-NOT:#define __wasm_simd128__
+// WEBASSEMBLY64-NOT:#define __wasm_simd256__
+// WEBASSEMBLY64-NOT:#define __wasm_simd512__
+// WEBASSEMBLY64-NOT:#define __unix
+// WEBASSEMBLY64-NOT:#define __unix__
+// WEBASSEMBLY64-NEXT:#define __wasm 1{{$}}
+// WEBASSEMBLY64-NOT:#define __wasm32
+// WEBASSEMBLY64-NOT:#define __wasm32__
+// WEBASSEMBLY64-NEXT:#define __wasm64 1{{$}}
+// WEBASSEMBLY64-NEXT:#define __wasm64__ 1{{$}}
+// WEBASSEMBLY64-NEXT:#define __wasm__ 1{{$}}
Index: cfe/trunk/test/Preprocessor/wasm-target-features.c
===================================================================
--- cfe/trunk/test/Preprocessor/wasm-target-features.c
+++ cfe/trunk/test/Preprocessor/wasm-target-features.c
@@ -0,0 +1,35 @@
+// RUN: %clang -E -dM %s -o - 2>&1 \
+// RUN:     -target wasm32-unknown-unknown -msimd128 \
+// RUN:   | FileCheck %s -check-prefix=SIMD128
+// RUN: %clang -E -dM %s -o - 2>&1 \
+// RUN:     -target wasm64-unknown-unknown -msimd128 \
+// RUN:   | FileCheck %s -check-prefix=SIMD128
+//
+// SIMD128:#define __wasm_simd128__ 1{{$}}
+//
+// RUN: %clang -E -dM %s -o - 2>&1 \
+// RUN:     -target wasm32-unknown-unknown -mcpu=mvp \
+// RUN:   | FileCheck %s -check-prefix=MVP
+// RUN: %clang -E -dM %s -o - 2>&1 \
+// RUN:     -target wasm64-unknown-unknown -mcpu=mvp \
+// RUN:   | FileCheck %s -check-prefix=MVP
+//
+// MVP-NOT:#define __wasm_simd128__
+//
+// RUN: %clang -E -dM %s -o - 2>&1 \
+// RUN:     -target wasm32-unknown-unknown -mcpu=bleeding-edge \
+// RUN:   | FileCheck %s -check-prefix=BLEEDING_EDGE
+// RUN: %clang -E -dM %s -o - 2>&1 \
+// RUN:     -target wasm64-unknown-unknown -mcpu=bleeding-edge \
+// RUN:   | FileCheck %s -check-prefix=BLEEDING_EDGE
+//
+// BLEEDING_EDGE:#define __wasm_simd128__ 1{{$}}
+//
+// RUN: %clang -E -dM %s -o - 2>&1 \
+// RUN:     -target wasm32-unknown-unknown -mcpu=bleeding-edge -mno-simd128 \
+// RUN:   | FileCheck %s -check-prefix=BLEEDING_EDGE_NO_SIMD128
+// RUN: %clang -E -dM %s -o - 2>&1 \
+// RUN:     -target wasm64-unknown-unknown -mcpu=bleeding-edge -mno-simd128 \
+// RUN:   | FileCheck %s -check-prefix=BLEEDING_EDGE_NO_SIMD128
+//
+// BLEEDING_EDGE_NO_SIMD128-NOT:#define __wasm_simd128__