Merge "Update prebuilt Clang to r353983." into p9.0HEADp9.0-backupp9.0

1 files changed, 588 insertions, 0 deletions

diff --git a/clang-r353983/include/clang/Driver/ToolChain.h b/clang-r353983/include/clang/Driver/ToolChain.h
new file mode 100644
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--- /dev/null
+++ b/clang-r353983/include/clang/Driver/ToolChain.h
@@ -0,0 +1,588 @@
+//===- ToolChain.h - Collections of tools for one platform ------*- C++ -*-===//
+//
+// 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
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_CLANG_DRIVER_TOOLCHAIN_H
+#define LLVM_CLANG_DRIVER_TOOLCHAIN_H
+
+#include "clang/Basic/DebugInfoOptions.h"
+#include "clang/Basic/LLVM.h"
+#include "clang/Basic/LangOptions.h"
+#include "clang/Basic/Sanitizers.h"
+#include "clang/Driver/Action.h"
+#include "clang/Driver/Multilib.h"
+#include "clang/Driver/Types.h"
+#include "llvm/ADT/ArrayRef.h"
+#include "llvm/ADT/SmallVector.h"
+#include "llvm/ADT/StringRef.h"
+#include "llvm/ADT/Triple.h"
+#include "llvm/MC/MCTargetOptions.h"
+#include "llvm/Option/Option.h"
+#include "llvm/Support/VersionTuple.h"
+#include "llvm/Target/TargetOptions.h"
+#include <cassert>
+#include <memory>
+#include <string>
+#include <utility>
+
+namespace llvm {
+namespace opt {
+
+class Arg;
+class ArgList;
+class DerivedArgList;
+
+} // namespace opt
+namespace vfs {
+
+class FileSystem;
+
+} // namespace vfs
+} // namespace llvm
+
+namespace clang {
+
+class ObjCRuntime;
+
+namespace driver {
+
+class Driver;
+class InputInfo;
+class SanitizerArgs;
+class Tool;
+class XRayArgs;
+
+/// Helper structure used to pass information extracted from clang executable
+/// name such as `i686-linux-android-g++`.
+struct ParsedClangName {
+  /// Target part of the executable name, as `i686-linux-android`.
+  std::string TargetPrefix;
+
+  /// Driver mode part of the executable name, as `g++`.
+  std::string ModeSuffix;
+
+  /// Corresponding driver mode argument, as '--driver-mode=g++'
+  const char *DriverMode = nullptr;
+
+  /// True if TargetPrefix is recognized as a registered target name.
+  bool TargetIsValid = false;
+
+  ParsedClangName() = default;
+  ParsedClangName(std::string Suffix, const char *Mode)
+      : ModeSuffix(Suffix), DriverMode(Mode) {}
+  ParsedClangName(std::string Target, std::string Suffix, const char *Mode,
+                  bool IsRegistered)
+      : TargetPrefix(Target), ModeSuffix(Suffix), DriverMode(Mode),
+        TargetIsValid(IsRegistered) {}
+
+  bool isEmpty() const {
+    return TargetPrefix.empty() && ModeSuffix.empty() && DriverMode == nullptr;
+  }
+};
+
+/// ToolChain - Access to tools for a single platform.
+class ToolChain {
+public:
+  using path_list = SmallVector<std::string, 16>;
+
+  enum CXXStdlibType {
+    CST_Libcxx,
+    CST_Libstdcxx
+  };
+
+  enum RuntimeLibType {
+    RLT_CompilerRT,
+    RLT_Libgcc
+  };
+
+  enum RTTIMode {
+    RM_Enabled,
+    RM_Disabled,
+  };
+
+private:
+  friend class RegisterEffectiveTriple;
+
+  const Driver &D;
+  llvm::Triple Triple;
+  const llvm::opt::ArgList &Args;
+
+  // We need to initialize CachedRTTIArg before CachedRTTIMode
+  const llvm::opt::Arg *const CachedRTTIArg;
+
+  const RTTIMode CachedRTTIMode;
+
+  /// The list of toolchain specific path prefixes to search for libraries.
+  path_list LibraryPaths;
+
+  /// The list of toolchain specific path prefixes to search for files.
+  path_list FilePaths;
+
+  /// The list of toolchain specific path prefixes to search for programs.
+  path_list ProgramPaths;
+
+  mutable std::unique_ptr<Tool> Clang;
+  mutable std::unique_ptr<Tool> Assemble;
+  mutable std::unique_ptr<Tool> Link;
+  mutable std::unique_ptr<Tool> OffloadBundler;
+
+  Tool *getClang() const;
+  Tool *getAssemble() const;
+  Tool *getLink() const;
+  Tool *getClangAs() const;
+  Tool *getOffloadBundler() const;
+
+  mutable std::unique_ptr<SanitizerArgs> SanitizerArguments;
+  mutable std::unique_ptr<XRayArgs> XRayArguments;
+
+  /// The effective clang triple for the current Job.
+  mutable llvm::Triple EffectiveTriple;
+
+  /// Set the toolchain's effective clang triple.
+  void setEffectiveTriple(llvm::Triple ET) const {
+    EffectiveTriple = std::move(ET);
+  }
+
+protected:
+  MultilibSet Multilibs;
+  Multilib SelectedMultilib;
+
+  ToolChain(const Driver &D, const llvm::Triple &T,
+            const llvm::opt::ArgList &Args);
+
+  void setTripleEnvironment(llvm::Triple::EnvironmentType Env);
+
+  virtual Tool *buildAssembler() const;
+  virtual Tool *buildLinker() const;
+  virtual Tool *getTool(Action::ActionClass AC) const;
+
+  /// \name Utilities for implementing subclasses.
+  ///@{
+  static void addSystemInclude(const llvm::opt::ArgList &DriverArgs,
+                               llvm::opt::ArgStringList &CC1Args,
+                               const Twine &Path);
+  static void addExternCSystemInclude(const llvm::opt::ArgList &DriverArgs,
+                                      llvm::opt::ArgStringList &CC1Args,
+                                      const Twine &Path);
+  static void
+      addExternCSystemIncludeIfExists(const llvm::opt::ArgList &DriverArgs,
+                                      llvm::opt::ArgStringList &CC1Args,
+                                      const Twine &Path);
+  static void addSystemIncludes(const llvm::opt::ArgList &DriverArgs,
+                                llvm::opt::ArgStringList &CC1Args,
+                                ArrayRef<StringRef> Paths);
+  ///@}
+
+public:
+  virtual ~ToolChain();
+
+  // Accessors
+
+  const Driver &getDriver() const { return D; }
+  llvm::vfs::FileSystem &getVFS() const;
+  const llvm::Triple &getTriple() const { return Triple; }
+
+  /// Get the toolchain's aux triple, if it has one.
+  ///
+  /// Exactly what the aux triple represents depends on the toolchain, but for
+  /// example when compiling CUDA code for the GPU, the triple might be NVPTX,
+  /// while the aux triple is the host (CPU) toolchain, e.g. x86-linux-gnu.
+  virtual const llvm::Triple *getAuxTriple() const { return nullptr; }
+
+  /// Some toolchains need to modify the file name, for example to replace the
+  /// extension for object files with .cubin for OpenMP offloading to Nvidia
+  /// GPUs.
+  virtual std::string getInputFilename(const InputInfo &Input) const;
+
+  llvm::Triple::ArchType getArch() const { return Triple.getArch(); }
+  StringRef getArchName() const { return Triple.getArchName(); }
+  StringRef getPlatform() const { return Triple.getVendorName(); }
+  StringRef getOS() const { return Triple.getOSName(); }
+
+  /// Provide the default architecture name (as expected by -arch) for
+  /// this toolchain.
+  StringRef getDefaultUniversalArchName() const;
+
+  std::string getTripleString() const {
+    return Triple.getTriple();
+  }
+
+  /// Get the toolchain's effective clang triple.
+  const llvm::Triple &getEffectiveTriple() const {
+    assert(!EffectiveTriple.getTriple().empty() && "No effective triple");
+    return EffectiveTriple;
+  }
+
+  path_list &getLibraryPaths() { return LibraryPaths; }
+  const path_list &getLibraryPaths() const { return LibraryPaths; }
+
+  path_list &getFilePaths() { return FilePaths; }
+  const path_list &getFilePaths() const { return FilePaths; }
+
+  path_list &getProgramPaths() { return ProgramPaths; }
+  const path_list &getProgramPaths() const { return ProgramPaths; }
+
+  const MultilibSet &getMultilibs() const { return Multilibs; }
+
+  const Multilib &getMultilib() const { return SelectedMultilib; }
+
+  const SanitizerArgs& getSanitizerArgs() const;
+
+  const XRayArgs& getXRayArgs() const;
+
+  // Returns the Arg * that explicitly turned on/off rtti, or nullptr.
+  const llvm::opt::Arg *getRTTIArg() const { return CachedRTTIArg; }
+
+  // Returns the RTTIMode for the toolchain with the current arguments.
+  RTTIMode getRTTIMode() const { return CachedRTTIMode; }
+
+  /// Return any implicit target and/or mode flag for an invocation of
+  /// the compiler driver as `ProgName`.
+  ///
+  /// For example, when called with i686-linux-android-g++, the first element
+  /// of the return value will be set to `"i686-linux-android"` and the second
+  /// will be set to "--driver-mode=g++"`.
+  /// It is OK if the target name is not registered. In this case the return
+  /// value contains false in the field TargetIsValid.
+  ///
+  /// \pre `llvm::InitializeAllTargets()` has been called.
+  /// \param ProgName The name the Clang driver was invoked with (from,
+  /// e.g., argv[0]).
+  /// \return A structure of type ParsedClangName that contains the executable
+  /// name parts.
+  static ParsedClangName getTargetAndModeFromProgramName(StringRef ProgName);
+
+  // Tool access.
+
+  /// TranslateArgs - Create a new derived argument list for any argument
+  /// translations this ToolChain may wish to perform, or 0 if no tool chain
+  /// specific translations are needed. If \p DeviceOffloadKind is specified
+  /// the translation specific for that offload kind is performed.
+  ///
+  /// \param BoundArch - The bound architecture name, or 0.
+  /// \param DeviceOffloadKind - The device offload kind used for the
+  /// translation.
+  virtual llvm::opt::DerivedArgList *
+  TranslateArgs(const llvm::opt::DerivedArgList &Args, StringRef BoundArch,
+                Action::OffloadKind DeviceOffloadKind) const {
+    return nullptr;
+  }
+
+  /// TranslateOpenMPTargetArgs - Create a new derived argument list for
+  /// that contains the OpenMP target specific flags passed via
+  /// -Xopenmp-target -opt=val OR -Xopenmp-target=<triple> -opt=val
+  virtual llvm::opt::DerivedArgList *TranslateOpenMPTargetArgs(
+      const llvm::opt::DerivedArgList &Args, bool SameTripleAsHost,
+      SmallVectorImpl<llvm::opt::Arg *> &AllocatedArgs) const;
+
+  /// Choose a tool to use to handle the action \p JA.
+  ///
+  /// This can be overridden when a particular ToolChain needs to use
+  /// a compiler other than Clang.
+  virtual Tool *SelectTool(const JobAction &JA) const;
+
+  // Helper methods
+
+  std::string GetFilePath(const char *Name) const;
+  std::string GetProgramPath(const char *Name) const;
+
+  /// Returns the linker path, respecting the -fuse-ld= argument to determine
+  /// the linker suffix or name.
+  std::string GetLinkerPath() const;
+
+  /// Dispatch to the specific toolchain for verbose printing.
+  ///
+  /// This is used when handling the verbose option to print detailed,
+  /// toolchain-specific information useful for understanding the behavior of
+  /// the driver on a specific platform.
+  virtual void printVerboseInfo(raw_ostream &OS) const {}
+
+  // Platform defaults information
+
+  /// Returns true if the toolchain is targeting a non-native
+  /// architecture.
+  virtual bool isCrossCompiling() const;
+
+  /// HasNativeLTOLinker - Check whether the linker and related tools have
+  /// native LLVM support.
+  virtual bool HasNativeLLVMSupport() const;
+
+  /// LookupTypeForExtension - Return the default language type to use for the
+  /// given extension.
+  virtual types::ID LookupTypeForExtension(StringRef Ext) const;
+
+  /// IsBlocksDefault - Does this tool chain enable -fblocks by default.
+  virtual bool IsBlocksDefault() const { return false; }
+
+  /// IsIntegratedAssemblerDefault - Does this tool chain enable -integrated-as
+  /// by default.
+  virtual bool IsIntegratedAssemblerDefault() const { return false; }
+
+  /// Check if the toolchain should use the integrated assembler.
+  virtual bool useIntegratedAs() const;
+
+  /// IsMathErrnoDefault - Does this tool chain use -fmath-errno by default.
+  virtual bool IsMathErrnoDefault() const { return true; }
+
+  /// IsEncodeExtendedBlockSignatureDefault - Does this tool chain enable
+  /// -fencode-extended-block-signature by default.
+  virtual bool IsEncodeExtendedBlockSignatureDefault() const { return false; }
+
+  /// IsObjCNonFragileABIDefault - Does this tool chain set
+  /// -fobjc-nonfragile-abi by default.
+  virtual bool IsObjCNonFragileABIDefault() const { return false; }
+
+  /// UseObjCMixedDispatchDefault - When using non-legacy dispatch, should the
+  /// mixed dispatch method be used?
+  virtual bool UseObjCMixedDispatch() const { return false; }
+
+  /// Check whether to enable x86 relax relocations by default.
+  virtual bool useRelaxRelocations() const;
+
+  /// GetDefaultStackProtectorLevel - Get the default stack protector level for
+  /// this tool chain (0=off, 1=on, 2=strong, 3=all).
+  virtual unsigned GetDefaultStackProtectorLevel(bool KernelOrKext) const {
+    return 0;
+  }
+
+  /// Get the default trivial automatic variable initialization.
+  virtual LangOptions::TrivialAutoVarInitKind
+  GetDefaultTrivialAutoVarInit() const {
+    return LangOptions::TrivialAutoVarInitKind::Uninitialized;
+  }
+
+  /// GetDefaultLinker - Get the default linker to use.
+  virtual const char *getDefaultLinker() const { return "ld"; }
+
+  /// GetDefaultRuntimeLibType - Get the default runtime library variant to use.
+  virtual RuntimeLibType GetDefaultRuntimeLibType() const {
+    return ToolChain::RLT_Libgcc;
+  }
+
+  virtual CXXStdlibType GetDefaultCXXStdlibType() const {
+    return ToolChain::CST_Libstdcxx;
+  }
+
+  virtual std::string getCompilerRTPath() const;
+
+  virtual std::string getCompilerRT(const llvm::opt::ArgList &Args,
+                                    StringRef Component,
+                                    bool Shared = false) const;
+
+  const char *getCompilerRTArgString(const llvm::opt::ArgList &Args,
+                                     StringRef Component,
+                                     bool Shared = false) const;
+
+  // Returns <ResourceDir>/lib/<OSName>/<arch>.  This is used by runtimes (such
+  // as OpenMP) to find arch-specific libraries.
+  std::string getArchSpecificLibPath() const;
+
+  // Returns <OSname> part of above.
+  StringRef getOSLibName() const;
+
+  /// needsProfileRT - returns true if instrumentation profile is on.
+  static bool needsProfileRT(const llvm::opt::ArgList &Args);
+
+  /// Returns true if gcov instrumentation (-fprofile-arcs or --coverage) is on.
+  static bool needsGCovInstrumentation(const llvm::opt::ArgList &Args);
+
+  /// IsUnwindTablesDefault - Does this tool chain use -funwind-tables
+  /// by default.
+  virtual bool IsUnwindTablesDefault(const llvm::opt::ArgList &Args) const;
+
+  /// Test whether this toolchain defaults to PIC.
+  virtual bool isPICDefault() const = 0;
+
+  /// Test whether this toolchain defaults to PIE.
+  virtual bool isPIEDefault() const = 0;
+
+  /// Tests whether this toolchain forces its default for PIC, PIE or
+  /// non-PIC.  If this returns true, any PIC related flags should be ignored
+  /// and instead the results of \c isPICDefault() and \c isPIEDefault() are
+  /// used exclusively.
+  virtual bool isPICDefaultForced() const = 0;
+
+  /// SupportsProfiling - Does this tool chain support -pg.
+  virtual bool SupportsProfiling() const { return true; }
+
+  /// Complain if this tool chain doesn't support Objective-C ARC.
+  virtual void CheckObjCARC() const {}
+
+  /// Get the default debug info format. Typically, this is DWARF.
+  virtual codegenoptions::DebugInfoFormat getDefaultDebugFormat() const {
+    return codegenoptions::DIF_DWARF;
+  }
+
+  /// UseDwarfDebugFlags - Embed the compile options to clang into the Dwarf
+  /// compile unit information.
+  virtual bool UseDwarfDebugFlags() const { return false; }
+
+  // Return the DWARF version to emit, in the absence of arguments
+  // to the contrary.
+  virtual unsigned GetDefaultDwarfVersion() const { return 4; }
+
+  // True if the driver should assume "-fstandalone-debug"
+  // in the absence of an option specifying otherwise,
+  // provided that debugging was requested in the first place.
+  // i.e. a value of 'true' does not imply that debugging is wanted.
+  virtual bool GetDefaultStandaloneDebug() const { return false; }
+
+  // Return the default debugger "tuning."
+  virtual llvm::DebuggerKind getDefaultDebuggerTuning() const {
+    return llvm::DebuggerKind::GDB;
+  }
+
+  /// Does this toolchain supports given debug info option or not.
+  virtual bool supportsDebugInfoOption(const llvm::opt::Arg *) const {
+    return true;
+  }
+
+  /// Adjust debug information kind considering all passed options.
+  virtual void adjustDebugInfoKind(codegenoptions::DebugInfoKind &DebugInfoKind,
+                                   const llvm::opt::ArgList &Args) const {}
+
+  /// GetExceptionModel - Return the tool chain exception model.
+  virtual llvm::ExceptionHandling
+  GetExceptionModel(const llvm::opt::ArgList &Args) const;
+
+  /// SupportsEmbeddedBitcode - Does this tool chain support embedded bitcode.
+  virtual bool SupportsEmbeddedBitcode() const { return false; }
+
+  /// getThreadModel() - Which thread model does this target use?
+  virtual std::string getThreadModel(const llvm::opt::ArgList &) const {
+    return "posix";
+  }
+
+  /// isThreadModelSupported() - Does this target support a thread model?
+  virtual bool isThreadModelSupported(const StringRef Model) const;
+
+  /// ComputeLLVMTriple - Return the LLVM target triple to use, after taking
+  /// command line arguments into account.
+  virtual std::string
+  ComputeLLVMTriple(const llvm::opt::ArgList &Args,
+                    types::ID InputType = types::TY_INVALID) const;
+
+  /// ComputeEffectiveClangTriple - Return the Clang triple to use for this
+  /// target, which may take into account the command line arguments. For
+  /// example, on Darwin the -mmacosx-version-min= command line argument (which
+  /// sets the deployment target) determines the version in the triple passed to
+  /// Clang.
+  virtual std::string ComputeEffectiveClangTriple(
+      const llvm::opt::ArgList &Args,
+      types::ID InputType = types::TY_INVALID) const;
+
+  /// getDefaultObjCRuntime - Return the default Objective-C runtime
+  /// for this platform.
+  ///
+  /// FIXME: this really belongs on some sort of DeploymentTarget abstraction
+  virtual ObjCRuntime getDefaultObjCRuntime(bool isNonFragile) const;
+
+  /// hasBlocksRuntime - Given that the user is compiling with
+  /// -fblocks, does this tool chain guarantee the existence of a
+  /// blocks runtime?
+  ///
+  /// FIXME: this really belongs on some sort of DeploymentTarget abstraction
+  virtual bool hasBlocksRuntime() const { return true; }
+
+  /// Add the clang cc1 arguments for system include paths.
+  ///
+  /// This routine is responsible for adding the necessary cc1 arguments to
+  /// include headers from standard system header directories.
+  virtual void
+  AddClangSystemIncludeArgs(const llvm::opt::ArgList &DriverArgs,
+                            llvm::opt::ArgStringList &CC1Args) const;
+
+  /// Add options that need to be passed to cc1 for this target.
+  virtual void addClangTargetOptions(const llvm::opt::ArgList &DriverArgs,
+                                     llvm::opt::ArgStringList &CC1Args,
+                                     Action::OffloadKind DeviceOffloadKind) const;
+
+  /// Add warning options that need to be passed to cc1 for this target.
+  virtual void addClangWarningOptions(llvm::opt::ArgStringList &CC1Args) const;
+
+  // GetRuntimeLibType - Determine the runtime library type to use with the
+  // given compilation arguments.
+  virtual RuntimeLibType
+  GetRuntimeLibType(const llvm::opt::ArgList &Args) const;
+
+  // GetCXXStdlibType - Determine the C++ standard library type to use with the
+  // given compilation arguments.
+  virtual CXXStdlibType GetCXXStdlibType(const llvm::opt::ArgList &Args) const;
+
+  /// AddClangCXXStdlibIncludeArgs - Add the clang -cc1 level arguments to set
+  /// the include paths to use for the given C++ standard library type.
+  virtual void
+  AddClangCXXStdlibIncludeArgs(const llvm::opt::ArgList &DriverArgs,
+                               llvm::opt::ArgStringList &CC1Args) const;
+
+  /// Returns if the C++ standard library should be linked in.
+  /// Note that e.g. -lm should still be linked even if this returns false.
+  bool ShouldLinkCXXStdlib(const llvm::opt::ArgList &Args) const;
+
+  /// AddCXXStdlibLibArgs - Add the system specific linker arguments to use
+  /// for the given C++ standard library type.
+  virtual void AddCXXStdlibLibArgs(const llvm::opt::ArgList &Args,
+                                   llvm::opt::ArgStringList &CmdArgs) const;
+
+  /// AddFilePathLibArgs - Add each thing in getFilePaths() as a "-L" option.
+  void AddFilePathLibArgs(const llvm::opt::ArgList &Args,
+                          llvm::opt::ArgStringList &CmdArgs) const;
+
+  /// AddCCKextLibArgs - Add the system specific linker arguments to use
+  /// for kernel extensions (Darwin-specific).
+  virtual void AddCCKextLibArgs(const llvm::opt::ArgList &Args,
+                                llvm::opt::ArgStringList &CmdArgs) const;
+
+  /// AddFastMathRuntimeIfAvailable - If a runtime library exists that sets
+  /// global flags for unsafe floating point math, add it and return true.
+  ///
+  /// This checks for presence of the -Ofast, -ffast-math or -funsafe-math flags.
+  virtual bool AddFastMathRuntimeIfAvailable(
+      const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs) const;
+
+  /// addProfileRTLibs - When -fprofile-instr-profile is specified, try to pass
+  /// a suitable profile runtime library to the linker.
+  virtual void addProfileRTLibs(const llvm::opt::ArgList &Args,
+                                llvm::opt::ArgStringList &CmdArgs) const;
+
+  /// Add arguments to use system-specific CUDA includes.
+  virtual void AddCudaIncludeArgs(const llvm::opt::ArgList &DriverArgs,
+                                  llvm::opt::ArgStringList &CC1Args) const;
+
+  /// Add arguments to use MCU GCC toolchain includes.
+  virtual void AddIAMCUIncludeArgs(const llvm::opt::ArgList &DriverArgs,
+                                   llvm::opt::ArgStringList &CC1Args) const;
+
+  /// On Windows, returns the MSVC compatibility version.
+  virtual VersionTuple computeMSVCVersion(const Driver *D,
+                                          const llvm::opt::ArgList &Args) const;
+
+  /// Return sanitizers which are available in this toolchain.
+  virtual SanitizerMask getSupportedSanitizers() const;
+
+  /// Return sanitizers which are enabled by default.
+  virtual SanitizerMask getDefaultSanitizers() const { return 0; }
+};
+
+/// Set a ToolChain's effective triple. Reset it when the registration object
+/// is destroyed.
+class RegisterEffectiveTriple {
+  const ToolChain &TC;
+
+public:
+  RegisterEffectiveTriple(const ToolChain &TC, llvm::Triple T) : TC(TC) {
+    TC.setEffectiveTriple(std::move(T));
+  }
+
+  ~RegisterEffectiveTriple() { TC.setEffectiveTriple(llvm::Triple()); }
+};
+
+} // namespace driver
+
+} // namespace clang
+
+#endif // LLVM_CLANG_DRIVER_TOOLCHAIN_H