Merge branch 'users/chapuni/cov/single/pair' into users/chapuni/cov/single/nextcount-baseusers/chapuni/cov/single/nextcount-base

17 files changed, 283 insertions, 24 deletions

diff --git a/clang/lib/Basic/Builtins.cpp b/clang/lib/Basic/Builtins.cpp
index 8dd1888..5881837 100644
--- a/clang/lib/Basic/Builtins.cpp
+++ b/clang/lib/Basic/Builtins.cpp
@@ -163,6 +163,10 @@ void Builtin::Context::initializeBuiltins(IdentifierTable &Table,
   }
 }
 
+std::string Builtin::Context::getQuotedName(unsigned ID) const {
+  return (llvm::Twine("'") + getName(ID) + "'").str();
+}
+
 unsigned Builtin::Context::getRequiredVectorWidth(unsigned ID) const {
   const char *WidthPos = ::strchr(getRecord(ID).Attributes, 'V');
   if (!WidthPos)
diff --git a/clang/lib/Basic/CMakeLists.txt b/clang/lib/Basic/CMakeLists.txt
index e11e1ac..331dfbb 100644
--- a/clang/lib/Basic/CMakeLists.txt
+++ b/clang/lib/Basic/CMakeLists.txt
@@ -120,6 +120,7 @@ add_clang_library(clangBasic
   Targets/WebAssembly.cpp
   Targets/X86.cpp
   Targets/XCore.cpp
+  Targets/Xtensa.cpp
   TokenKinds.cpp
   TypeTraits.cpp
   Version.cpp
diff --git a/clang/lib/Basic/CodeGenOptions.cpp b/clang/lib/Basic/CodeGenOptions.cpp
index 79d7153..95e65ba 100644
--- a/clang/lib/Basic/CodeGenOptions.cpp
+++ b/clang/lib/Basic/CodeGenOptions.cpp
@@ -17,7 +17,6 @@ CodeGenOptions::CodeGenOptions() {
 #include "clang/Basic/CodeGenOptions.def"
 
   RelocationModel = llvm::Reloc::PIC_;
-  memcpy(CoverageVersion, "408*", 4);
 }
 
 void CodeGenOptions::resetNonModularOptions(StringRef ModuleFormat) {
@@ -54,7 +53,6 @@ void CodeGenOptions::resetNonModularOptions(StringRef ModuleFormat) {
   }
 
   RelocationModel = llvm::Reloc::PIC_;
-  memcpy(CoverageVersion, "408*", 4);
 }
 
 }  // end namespace clang
diff --git a/clang/lib/Basic/Targets.cpp b/clang/lib/Basic/Targets.cpp
index 706a391..be5dedb 100644
--- a/clang/lib/Basic/Targets.cpp
+++ b/clang/lib/Basic/Targets.cpp
@@ -40,6 +40,7 @@
 #include "Targets/WebAssembly.h"
 #include "Targets/X86.h"
 #include "Targets/XCore.h"
+#include "Targets/Xtensa.h"
 #include "clang/Basic/Diagnostic.h"
 #include "clang/Basic/DiagnosticFrontend.h"
 #include "llvm/ADT/StringExtras.h"
@@ -297,6 +298,14 @@ std::unique_ptr<TargetInfo> AllocateTarget(const llvm::Triple &Triple,
     case llvm::Triple::NaCl:
       return std::make_unique<NaClTargetInfo<NaClMips32TargetInfo>>(Triple,
                                                                     Opts);
+    case llvm::Triple::Win32:
+      switch (Triple.getEnvironment()) {
+      case llvm::Triple::GNU:
+        return std::make_unique<MinGWMipsTargetInfo>(Triple, Opts);
+      case llvm::Triple::MSVC:
+      default: // Assume MSVC for unknown environments
+        return std::make_unique<MicrosoftMipsTargetInfo>(Triple, Opts);
+      }
     default:
       return std::make_unique<MipsTargetInfo>(Triple, Opts);
     }
@@ -743,6 +752,9 @@ std::unique_ptr<TargetInfo> AllocateTarget(const llvm::Triple &Triple,
     default:
         return std::make_unique<LoongArch64TargetInfo>(Triple, Opts);
     }
+
+  case llvm::Triple::xtensa:
+    return std::make_unique<XtensaTargetInfo>(Triple, Opts);
   }
 }
 } // namespace targets
diff --git a/clang/lib/Basic/Targets/AArch64.cpp b/clang/lib/Basic/Targets/AArch64.cpp
index 53e102b..2b4b954d 100644
--- a/clang/lib/Basic/Targets/AArch64.cpp
+++ b/clang/lib/Basic/Targets/AArch64.cpp
@@ -714,7 +714,7 @@ AArch64TargetInfo::getVScaleRange(const LangOptions &LangOpts) const {
   return std::nullopt;
 }
 
-unsigned AArch64TargetInfo::getFMVPriority(ArrayRef<StringRef> Features) const {
+uint64_t AArch64TargetInfo::getFMVPriority(ArrayRef<StringRef> Features) const {
   return llvm::AArch64::getFMVPriority(Features);
 }
 
diff --git a/clang/lib/Basic/Targets/AArch64.h b/clang/lib/Basic/Targets/AArch64.h
index 68a8b1e..4e927c0 100644
--- a/clang/lib/Basic/Targets/AArch64.h
+++ b/clang/lib/Basic/Targets/AArch64.h
@@ -137,7 +137,7 @@ public:
   void fillValidCPUList(SmallVectorImpl<StringRef> &Values) const override;
   bool setCPU(const std::string &Name) override;
 
-  unsigned getFMVPriority(ArrayRef<StringRef> Features) const override;
+  uint64_t getFMVPriority(ArrayRef<StringRef> Features) const override;
 
   bool useFP16ConversionIntrinsics() const override {
     return false;
diff --git a/clang/lib/Basic/Targets/Mips.cpp b/clang/lib/Basic/Targets/Mips.cpp
index 174bc9d..d56995e 100644
--- a/clang/lib/Basic/Targets/Mips.cpp
+++ b/clang/lib/Basic/Targets/Mips.cpp
@@ -304,3 +304,62 @@ bool MipsTargetInfo::validateTarget(DiagnosticsEngine &Diags) const {
 
   return true;
 }
+
+WindowsMipsTargetInfo::WindowsMipsTargetInfo(const llvm::Triple &Triple,
+                                             const TargetOptions &Opts)
+    : WindowsTargetInfo<MipsTargetInfo>(Triple, Opts), Triple(Triple) {}
+
+void WindowsMipsTargetInfo::getVisualStudioDefines(
+    const LangOptions &Opts, MacroBuilder &Builder) const {
+  Builder.defineMacro("_M_MRX000", "4000");
+}
+
+TargetInfo::BuiltinVaListKind
+WindowsMipsTargetInfo::getBuiltinVaListKind() const {
+  return TargetInfo::CharPtrBuiltinVaList;
+}
+
+TargetInfo::CallingConvCheckResult
+WindowsMipsTargetInfo::checkCallingConvention(CallingConv CC) const {
+  switch (CC) {
+  case CC_X86StdCall:
+  case CC_X86ThisCall:
+  case CC_X86FastCall:
+  case CC_X86VectorCall:
+    return CCCR_Ignore;
+  case CC_C:
+  case CC_OpenCLKernel:
+  case CC_PreserveMost:
+  case CC_PreserveAll:
+  case CC_Swift:
+  case CC_SwiftAsync:
+    return CCCR_OK;
+  default:
+    return CCCR_Warning;
+  }
+}
+
+// Windows MIPS, MS (C++) ABI
+MicrosoftMipsTargetInfo::MicrosoftMipsTargetInfo(const llvm::Triple &Triple,
+                                                 const TargetOptions &Opts)
+    : WindowsMipsTargetInfo(Triple, Opts) {
+  TheCXXABI.set(TargetCXXABI::Microsoft);
+}
+
+void MicrosoftMipsTargetInfo::getTargetDefines(const LangOptions &Opts,
+                                               MacroBuilder &Builder) const {
+  WindowsMipsTargetInfo::getTargetDefines(Opts, Builder);
+  WindowsMipsTargetInfo::getVisualStudioDefines(Opts, Builder);
+}
+
+MinGWMipsTargetInfo::MinGWMipsTargetInfo(const llvm::Triple &Triple,
+                                         const TargetOptions &Opts)
+    : WindowsMipsTargetInfo(Triple, Opts) {
+  TheCXXABI.set(TargetCXXABI::GenericMIPS);
+}
+
+void MinGWMipsTargetInfo::getTargetDefines(const LangOptions &Opts,
+                                           MacroBuilder &Builder) const {
+  WindowsMipsTargetInfo::getTargetDefines(Opts, Builder);
+  Builder.defineMacro("_MIPS_");
+}
diff --git a/clang/lib/Basic/Targets/Mips.h b/clang/lib/Basic/Targets/Mips.h
index 8acaf56..7ddcd57 100644
--- a/clang/lib/Basic/Targets/Mips.h
+++ b/clang/lib/Basic/Targets/Mips.h
@@ -13,6 +13,7 @@
 #ifndef LLVM_CLANG_LIB_BASIC_TARGETS_MIPS_H
 #define LLVM_CLANG_LIB_BASIC_TARGETS_MIPS_H
 
+#include "OSTargets.h"
 #include "clang/Basic/TargetInfo.h"
 #include "clang/Basic/TargetOptions.h"
 #include "llvm/Support/Compiler.h"
@@ -450,6 +451,42 @@ public:
     return std::make_pair(32, 32);
   }
 };
+
+class LLVM_LIBRARY_VISIBILITY WindowsMipsTargetInfo
+    : public WindowsTargetInfo<MipsTargetInfo> {
+  const llvm::Triple Triple;
+
+public:
+  WindowsMipsTargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts);
+
+  void getVisualStudioDefines(const LangOptions &Opts,
+                              MacroBuilder &Builder) const;
+
+  BuiltinVaListKind getBuiltinVaListKind() const override;
+
+  CallingConvCheckResult checkCallingConvention(CallingConv CC) const override;
+};
+
+// Windows MIPS, MS (C++) ABI
+class LLVM_LIBRARY_VISIBILITY MicrosoftMipsTargetInfo
+    : public WindowsMipsTargetInfo {
+public:
+  MicrosoftMipsTargetInfo(const llvm::Triple &Triple,
+                          const TargetOptions &Opts);
+
+  void getTargetDefines(const LangOptions &Opts,
+                        MacroBuilder &Builder) const override;
+};
+
+// MIPS MinGW target
+class LLVM_LIBRARY_VISIBILITY MinGWMipsTargetInfo
+    : public WindowsMipsTargetInfo {
+public:
+  MinGWMipsTargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts);
+
+  void getTargetDefines(const LangOptions &Opts,
+                        MacroBuilder &Builder) const override;
+};
 } // namespace targets
 } // namespace clang
 
diff --git a/clang/lib/Basic/Targets/OSTargets.cpp b/clang/lib/Basic/Targets/OSTargets.cpp
index 88c0541..6f98353 100644
--- a/clang/lib/Basic/Targets/OSTargets.cpp
+++ b/clang/lib/Basic/Targets/OSTargets.cpp
@@ -114,9 +114,6 @@ void getDarwinDefines(MacroBuilder &Builder, const LangOptions &Opts,
     assert(OsVersion.getMinor().value_or(0) < 100 &&
            OsVersion.getSubminor().value_or(0) < 100 && "Invalid version!");
     Builder.defineMacro("__ENVIRONMENT_OS_VERSION_MIN_REQUIRED__", Str);
-
-    // Tell users about the kernel if there is one.
-    Builder.defineMacro("__MACH__");
   }
 
   PlatformMinVersion = OsVersion;
diff --git a/clang/lib/Basic/Targets/RISCV.cpp b/clang/lib/Basic/Targets/RISCV.cpp
index a541dfed..db23b0c 100644
--- a/clang/lib/Basic/Targets/RISCV.cpp
+++ b/clang/lib/Basic/Targets/RISCV.cpp
@@ -489,7 +489,7 @@ ParsedTargetAttr RISCVTargetInfo::parseTargetAttr(StringRef Features) const {
   return Ret;
 }
 
-unsigned RISCVTargetInfo::getFMVPriority(ArrayRef<StringRef> Features) const {
+uint64_t RISCVTargetInfo::getFMVPriority(ArrayRef<StringRef> Features) const {
   // Priority is explicitly specified on RISC-V unlike on other targets, where
   // it is derived by all the features of a specific version. Therefore if a
   // feature contains the priority string, then return it immediately.
@@ -501,7 +501,7 @@ unsigned RISCVTargetInfo::getFMVPriority(ArrayRef<StringRef> Features) const {
       Feature = RHS;
     else
       continue;
-    unsigned Priority;
+    uint64_t Priority;
     if (!Feature.getAsInteger(0, Priority))
       return Priority;
   }
diff --git a/clang/lib/Basic/Targets/RISCV.h b/clang/lib/Basic/Targets/RISCV.h
index 68f10e7..bb3f3a5 100644
--- a/clang/lib/Basic/Targets/RISCV.h
+++ b/clang/lib/Basic/Targets/RISCV.h
@@ -122,7 +122,7 @@ public:
   void fillValidTuneCPUList(SmallVectorImpl<StringRef> &Values) const override;
   bool supportsTargetAttributeTune() const override { return true; }
   ParsedTargetAttr parseTargetAttr(StringRef Str) const override;
-  unsigned getFMVPriority(ArrayRef<StringRef> Features) const override;
+  uint64_t getFMVPriority(ArrayRef<StringRef> Features) const override;
 
   std::pair<unsigned, unsigned> hardwareInterferenceSizes() const override {
     return std::make_pair(32, 32);
diff --git a/clang/lib/Basic/Targets/SPIR.cpp b/clang/lib/Basic/Targets/SPIR.cpp
index 0403039..f242fed 100644
--- a/clang/lib/Basic/Targets/SPIR.cpp
+++ b/clang/lib/Basic/Targets/SPIR.cpp
@@ -13,11 +13,24 @@
 #include "SPIR.h"
 #include "AMDGPU.h"
 #include "Targets.h"
+#include "clang/Basic/MacroBuilder.h"
+#include "clang/Basic/TargetBuiltins.h"
 #include "llvm/TargetParser/TargetParser.h"
 
 using namespace clang;
 using namespace clang::targets;
 
+static constexpr Builtin::Info BuiltinInfo[] = {
+#define BUILTIN(ID, TYPE, ATTRS)                                               \
+  {#ID, TYPE, ATTRS, nullptr, HeaderDesc::NO_HEADER, ALL_LANGUAGES},
+#include "clang/Basic/BuiltinsSPIRV.inc"
+};
+
+ArrayRef<Builtin::Info> SPIRVTargetInfo::getTargetBuiltins() const {
+  return llvm::ArrayRef(BuiltinInfo,
+                        clang::SPIRV::LastTSBuiltin - Builtin::FirstTSBuiltin);
+}
+
 void SPIRTargetInfo::getTargetDefines(const LangOptions &Opts,
                                       MacroBuilder &Builder) const {
   DefineStd(Builder, "SPIR", Opts);
diff --git a/clang/lib/Basic/Targets/SPIR.h b/clang/lib/Basic/Targets/SPIR.h
index 85e4bd9..5a328b9c 100644
--- a/clang/lib/Basic/Targets/SPIR.h
+++ b/clang/lib/Basic/Targets/SPIR.h
@@ -313,7 +313,7 @@ public:
     resetDataLayout("e-i64:64-v16:16-v24:32-v32:32-v48:64-v96:128-v192:256-"
                     "v256:256-v512:512-v1024:1024-n8:16:32:64-G1");
   }
-
+  ArrayRef<Builtin::Info> getTargetBuiltins() const override;
   void getTargetDefines(const LangOptions &Opts,
                         MacroBuilder &Builder) const override;
 };
diff --git a/clang/lib/Basic/Targets/X86.cpp b/clang/lib/Basic/Targets/X86.cpp
index 1b16888..40ad8fd 100644
--- a/clang/lib/Basic/Targets/X86.cpp
+++ b/clang/lib/Basic/Targets/X86.cpp
@@ -30,14 +30,6 @@ static constexpr Builtin::Info BuiltinInfoX86[] = {
   {#ID, TYPE, ATTRS, FEATURE, HeaderDesc::NO_HEADER, ALL_LANGUAGES},
 #define TARGET_HEADER_BUILTIN(ID, TYPE, ATTRS, HEADER, LANGS, FEATURE)         \
   {#ID, TYPE, ATTRS, FEATURE, HeaderDesc::HEADER, LANGS},
-#include "clang/Basic/BuiltinsX86.def"
-
-#define BUILTIN(ID, TYPE, ATTRS)                                               \
-  {#ID, TYPE, ATTRS, nullptr, HeaderDesc::NO_HEADER, ALL_LANGUAGES},
-#define TARGET_BUILTIN(ID, TYPE, ATTRS, FEATURE)                               \
-  {#ID, TYPE, ATTRS, FEATURE, HeaderDesc::NO_HEADER, ALL_LANGUAGES},
-#define TARGET_HEADER_BUILTIN(ID, TYPE, ATTRS, HEADER, LANGS, FEATURE)         \
-  {#ID, TYPE, ATTRS, FEATURE, HeaderDesc::HEADER, LANGS},
 #include "clang/Basic/BuiltinsX86.inc"
 
 #define BUILTIN(ID, TYPE, ATTRS)                                               \
@@ -46,7 +38,7 @@ static constexpr Builtin::Info BuiltinInfoX86[] = {
   {#ID, TYPE, ATTRS, FEATURE, HeaderDesc::NO_HEADER, ALL_LANGUAGES},
 #define TARGET_HEADER_BUILTIN(ID, TYPE, ATTRS, HEADER, LANGS, FEATURE)         \
   {#ID, TYPE, ATTRS, FEATURE, HeaderDesc::HEADER, LANGS},
-#include "clang/Basic/BuiltinsX86_64.def"
+#include "clang/Basic/BuiltinsX86_64.inc"
 };
 
 static const char *const GCCRegNames[] = {
@@ -1365,8 +1357,8 @@ static llvm::X86::ProcessorFeatures getFeature(StringRef Name) {
   // correct, so it asserts if the value is out of range.
 }
 
-unsigned X86TargetInfo::getFMVPriority(ArrayRef<StringRef> Features) const {
-  auto getPriority = [](StringRef Feature) -> unsigned {
+uint64_t X86TargetInfo::getFMVPriority(ArrayRef<StringRef> Features) const {
+  auto getPriority = [](StringRef Feature) -> uint64_t {
     // Valid CPUs have a 'key feature' that compares just better than its key
     // feature.
     using namespace llvm::X86;
@@ -1380,7 +1372,7 @@ unsigned X86TargetInfo::getFMVPriority(ArrayRef<StringRef> Features) const {
     return getFeaturePriority(getFeature(Feature)) << 1;
   };
 
-  unsigned Priority = 0;
+  uint64_t Priority = 0;
   for (StringRef Feature : Features)
     if (!Feature.empty())
       Priority = std::max(Priority, getPriority(Feature));
diff --git a/clang/lib/Basic/Targets/X86.h b/clang/lib/Basic/Targets/X86.h
index 553c452..35aceb1 100644
--- a/clang/lib/Basic/Targets/X86.h
+++ b/clang/lib/Basic/Targets/X86.h
@@ -384,7 +384,7 @@ public:
     return CPU != llvm::X86::CK_None;
   }
 
-  unsigned getFMVPriority(ArrayRef<StringRef> Features) const override;
+  uint64_t getFMVPriority(ArrayRef<StringRef> Features) const override;
 
   bool setFPMath(StringRef Name) override;
 
diff --git a/clang/lib/Basic/Targets/Xtensa.cpp b/clang/lib/Basic/Targets/Xtensa.cpp
new file mode 100644
index 0000000..f3216f4
--- /dev/null
+++ b/clang/lib/Basic/Targets/Xtensa.cpp
@@ -0,0 +1,35 @@
+//===--- Xtensa.cpp - Implement Xtensa target feature support -------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// This file implements Xtensa TargetInfo objects.
+//
+//===----------------------------------------------------------------------===//
+
+#include "Xtensa.h"
+#include "clang/Basic/Builtins.h"
+#include "clang/Basic/MacroBuilder.h"
+#include "clang/Basic/TargetBuiltins.h"
+
+using namespace clang;
+using namespace clang::targets;
+
+void XtensaTargetInfo::getTargetDefines(const LangOptions &Opts,
+                                        MacroBuilder &Builder) const {
+  Builder.defineMacro("__xtensa__");
+  Builder.defineMacro("__XTENSA__");
+  if (BigEndian)
+    Builder.defineMacro("__XTENSA_EB__");
+  else
+    Builder.defineMacro("__XTENSA_EL__");
+  Builder.defineMacro("__XCHAL_HAVE_BE", BigEndian ? "1" : "0");
+  Builder.defineMacro("__XCHAL_HAVE_ABS");  // core arch
+  Builder.defineMacro("__XCHAL_HAVE_ADDX"); // core arch
+  Builder.defineMacro("__XCHAL_HAVE_L32R"); // core arch
+}
diff --git a/clang/lib/Basic/Targets/Xtensa.h b/clang/lib/Basic/Targets/Xtensa.h
new file mode 100644
index 0000000..a440ba8
--- /dev/null
+++ b/clang/lib/Basic/Targets/Xtensa.h
@@ -0,0 +1,111 @@
+//===--- Xtensa.h - Declare Xtensa target feature support -------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// This file declares Xtensa TargetInfo objects.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_CLANG_LIB_BASIC_TARGETS_XTENSA_H
+#define LLVM_CLANG_LIB_BASIC_TARGETS_XTENSA_H
+
+#include "clang/Basic/TargetInfo.h"
+#include "clang/Basic/TargetOptions.h"
+#include "llvm/ADT/StringSwitch.h"
+#include "llvm/Support/Compiler.h"
+#include "llvm/TargetParser/Triple.h"
+
+#include "clang/Basic/Builtins.h"
+#include "clang/Basic/MacroBuilder.h"
+#include "clang/Basic/TargetBuiltins.h"
+
+namespace clang {
+namespace targets {
+
+class LLVM_LIBRARY_VISIBILITY XtensaTargetInfo : public TargetInfo {
+  static const Builtin::Info BuiltinInfo[];
+
+protected:
+  std::string CPU;
+
+public:
+  XtensaTargetInfo(const llvm::Triple &Triple, const TargetOptions &)
+      : TargetInfo(Triple) {
+    // no big-endianess support yet
+    BigEndian = false;
+    NoAsmVariants = true;
+    LongLongAlign = 64;
+    SuitableAlign = 32;
+    DoubleAlign = LongDoubleAlign = 64;
+    SizeType = UnsignedInt;
+    PtrDiffType = SignedInt;
+    IntPtrType = SignedInt;
+    WCharType = SignedInt;
+    WIntType = UnsignedInt;
+    UseZeroLengthBitfieldAlignment = true;
+    MaxAtomicPromoteWidth = MaxAtomicInlineWidth = 32;
+    resetDataLayout("e-m:e-p:32:32-i8:8:32-i16:16:32-i64:64-n32");
+  }
+
+  void getTargetDefines(const LangOptions &Opts,
+                        MacroBuilder &Builder) const override;
+
+  ArrayRef<Builtin::Info> getTargetBuiltins() const override {
+    return std::nullopt;
+  }
+
+  BuiltinVaListKind getBuiltinVaListKind() const override {
+    return TargetInfo::XtensaABIBuiltinVaList;
+  }
+
+  std::string_view getClobbers() const override { return ""; }
+
+  ArrayRef<const char *> getGCCRegNames() const override {
+    static const char *const GCCRegNames[] = {
+        // General register name
+        "a0", "sp", "a1", "a2", "a3", "a4", "a5", "a6", "a7", "a8", "a9", "a10",
+        "a11", "a12", "a13", "a14", "a15",
+        // Special register name
+        "sar"};
+    return llvm::ArrayRef(GCCRegNames);
+  }
+
+  ArrayRef<TargetInfo::GCCRegAlias> getGCCRegAliases() const override {
+    return std::nullopt;
+  }
+
+  bool validateAsmConstraint(const char *&Name,
+                             TargetInfo::ConstraintInfo &Info) const override {
+    switch (*Name) {
+    default:
+      return false;
+    case 'a':
+      Info.setAllowsRegister();
+      return true;
+    }
+    return false;
+  }
+
+  int getEHDataRegisterNumber(unsigned RegNo) const override {
+    return (RegNo < 2) ? RegNo : -1;
+  }
+
+  bool isValidCPUName(StringRef Name) const override {
+    return llvm::StringSwitch<bool>(Name).Case("generic", true).Default(false);
+  }
+
+  bool setCPU(const std::string &Name) override {
+    CPU = Name;
+    return isValidCPUName(Name);
+  }
+};
+
+} // namespace targets
+} // namespace clang
+#endif // LLVM_CLANG_LIB_BASIC_TARGETS_XTENSA_H