Import prebuilt clang toolchain for linux.
diff --git a/linux-x64/clang/include/llvm/BinaryFormat/Dwarf.h b/linux-x64/clang/include/llvm/BinaryFormat/Dwarf.h
new file mode 100644
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+++ b/linux-x64/clang/include/llvm/BinaryFormat/Dwarf.h
@@ -0,0 +1,620 @@
+//===-- llvm/BinaryFormat/Dwarf.h ---Dwarf Constants-------------*- C++ -*-===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+/// \file
+/// This file contains constants used for implementing Dwarf
+/// debug support.
+///
+/// For details on the Dwarf specfication see the latest DWARF Debugging
+/// Information Format standard document on http://www.dwarfstd.org. This
+/// file often includes support for non-released standard features.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_BINARYFORMAT_DWARF_H
+#define LLVM_BINARYFORMAT_DWARF_H
+
+#include "llvm/ADT/Optional.h"
+#include "llvm/Support/Compiler.h"
+#include "llvm/Support/DataTypes.h"
+#include "llvm/Support/ErrorHandling.h"
+#include "llvm/Support/Format.h"
+#include "llvm/Support/FormatVariadicDetails.h"
+
+namespace llvm {
+class StringRef;
+
+namespace dwarf {
+
+//===----------------------------------------------------------------------===//
+// DWARF constants as gleaned from the DWARF Debugging Information Format V.5
+// reference manual http://www.dwarfstd.org/.
+//
+
+// Do not mix the following two enumerations sets. DW_TAG_invalid changes the
+// enumeration base type.
+
+enum LLVMConstants : uint32_t {
+ // LLVM mock tags (see also llvm/BinaryFormat/Dwarf.def).
+ DW_TAG_invalid = ~0U, // Tag for invalid results.
+ DW_VIRTUALITY_invalid = ~0U, // Virtuality for invalid results.
+ DW_MACINFO_invalid = ~0U, // Macinfo type for invalid results.
+
+ // Other constants.
+ DWARF_VERSION = 4, // Default dwarf version we output.
+ DW_PUBTYPES_VERSION = 2, // Section version number for .debug_pubtypes.
+ DW_PUBNAMES_VERSION = 2, // Section version number for .debug_pubnames.
+ DW_ARANGES_VERSION = 2, // Section version number for .debug_aranges.
+ // Identifiers we use to distinguish vendor extensions.
+ DWARF_VENDOR_DWARF = 0, // Defined in v2 or later of the DWARF standard.
+ DWARF_VENDOR_APPLE = 1,
+ DWARF_VENDOR_BORLAND = 2,
+ DWARF_VENDOR_GNU = 3,
+ DWARF_VENDOR_GOOGLE = 4,
+ DWARF_VENDOR_LLVM = 5,
+ DWARF_VENDOR_MIPS = 6
+};
+
+/// Constants that define the DWARF format as 32 or 64 bit.
+enum DwarfFormat : uint8_t { DWARF32, DWARF64 };
+
+/// Special ID values that distinguish a CIE from a FDE in DWARF CFI.
+/// Not inside an enum because a 64-bit value is needed.
+/// @{
+const uint32_t DW_CIE_ID = UINT32_MAX;
+const uint64_t DW64_CIE_ID = UINT64_MAX;
+/// @}
+
+/// Identifier of an invalid DIE offset in the .debug_info section.
+const uint32_t DW_INVALID_OFFSET = UINT32_MAX;
+
+enum Tag : uint16_t {
+#define HANDLE_DW_TAG(ID, NAME, VERSION, VENDOR) DW_TAG_##NAME = ID,
+#include "llvm/BinaryFormat/Dwarf.def"
+ DW_TAG_lo_user = 0x4080,
+ DW_TAG_hi_user = 0xffff,
+ DW_TAG_user_base = 0x1000 ///< Recommended base for user tags.
+};
+
+inline bool isType(Tag T) {
+ switch (T) {
+ case DW_TAG_array_type:
+ case DW_TAG_class_type:
+ case DW_TAG_interface_type:
+ case DW_TAG_enumeration_type:
+ case DW_TAG_pointer_type:
+ case DW_TAG_reference_type:
+ case DW_TAG_rvalue_reference_type:
+ case DW_TAG_string_type:
+ case DW_TAG_structure_type:
+ case DW_TAG_subroutine_type:
+ case DW_TAG_union_type:
+ case DW_TAG_ptr_to_member_type:
+ case DW_TAG_set_type:
+ case DW_TAG_subrange_type:
+ case DW_TAG_base_type:
+ case DW_TAG_const_type:
+ case DW_TAG_file_type:
+ case DW_TAG_packed_type:
+ case DW_TAG_volatile_type:
+ case DW_TAG_typedef:
+ return true;
+ default:
+ return false;
+ }
+}
+
+/// Attributes.
+enum Attribute : uint16_t {
+#define HANDLE_DW_AT(ID, NAME, VERSION, VENDOR) DW_AT_##NAME = ID,
+#include "llvm/BinaryFormat/Dwarf.def"
+ DW_AT_lo_user = 0x2000,
+ DW_AT_hi_user = 0x3fff,
+};
+
+enum Form : uint16_t {
+#define HANDLE_DW_FORM(ID, NAME, VERSION, VENDOR) DW_FORM_##NAME = ID,
+#include "llvm/BinaryFormat/Dwarf.def"
+ DW_FORM_lo_user = 0x1f00, ///< Not specified by DWARF.
+};
+
+enum LocationAtom {
+#define HANDLE_DW_OP(ID, NAME, VERSION, VENDOR) DW_OP_##NAME = ID,
+#include "llvm/BinaryFormat/Dwarf.def"
+ DW_OP_lo_user = 0xe0,
+ DW_OP_hi_user = 0xff,
+ DW_OP_LLVM_fragment = 0x1000 ///< Only used in LLVM metadata.
+};
+
+enum TypeKind : uint8_t {
+#define HANDLE_DW_ATE(ID, NAME, VERSION, VENDOR) DW_ATE_##NAME = ID,
+#include "llvm/BinaryFormat/Dwarf.def"
+ DW_ATE_lo_user = 0x80,
+ DW_ATE_hi_user = 0xff
+};
+
+enum DecimalSignEncoding {
+ // Decimal sign attribute values
+ DW_DS_unsigned = 0x01,
+ DW_DS_leading_overpunch = 0x02,
+ DW_DS_trailing_overpunch = 0x03,
+ DW_DS_leading_separate = 0x04,
+ DW_DS_trailing_separate = 0x05
+};
+
+enum EndianityEncoding {
+ // Endianity attribute values
+ DW_END_default = 0x00,
+ DW_END_big = 0x01,
+ DW_END_little = 0x02,
+ DW_END_lo_user = 0x40,
+ DW_END_hi_user = 0xff
+};
+
+enum AccessAttribute {
+ // Accessibility codes
+ DW_ACCESS_public = 0x01,
+ DW_ACCESS_protected = 0x02,
+ DW_ACCESS_private = 0x03
+};
+
+enum VisibilityAttribute {
+ // Visibility codes
+ DW_VIS_local = 0x01,
+ DW_VIS_exported = 0x02,
+ DW_VIS_qualified = 0x03
+};
+
+enum VirtualityAttribute {
+#define HANDLE_DW_VIRTUALITY(ID, NAME) DW_VIRTUALITY_##NAME = ID,
+#include "llvm/BinaryFormat/Dwarf.def"
+ DW_VIRTUALITY_max = 0x02
+};
+
+enum DefaultedMemberAttribute {
+#define HANDLE_DW_DEFAULTED(ID, NAME) DW_DEFAULTED_##NAME = ID,
+#include "llvm/BinaryFormat/Dwarf.def"
+ DW_DEFAULTED_max = 0x02
+};
+
+enum SourceLanguage {
+#define HANDLE_DW_LANG(ID, NAME, VERSION, VENDOR) DW_LANG_##NAME = ID,
+#include "llvm/BinaryFormat/Dwarf.def"
+ DW_LANG_lo_user = 0x8000,
+ DW_LANG_hi_user = 0xffff
+};
+
+enum CaseSensitivity {
+ // Identifier case codes
+ DW_ID_case_sensitive = 0x00,
+ DW_ID_up_case = 0x01,
+ DW_ID_down_case = 0x02,
+ DW_ID_case_insensitive = 0x03
+};
+
+enum CallingConvention {
+// Calling convention codes
+#define HANDLE_DW_CC(ID, NAME) DW_CC_##NAME = ID,
+#include "llvm/BinaryFormat/Dwarf.def"
+ DW_CC_lo_user = 0x40,
+ DW_CC_hi_user = 0xff
+};
+
+enum InlineAttribute {
+ // Inline codes
+ DW_INL_not_inlined = 0x00,
+ DW_INL_inlined = 0x01,
+ DW_INL_declared_not_inlined = 0x02,
+ DW_INL_declared_inlined = 0x03
+};
+
+enum ArrayDimensionOrdering {
+ // Array ordering
+ DW_ORD_row_major = 0x00,
+ DW_ORD_col_major = 0x01
+};
+
+enum DiscriminantList {
+ // Discriminant descriptor values
+ DW_DSC_label = 0x00,
+ DW_DSC_range = 0x01
+};
+
+/// Line Number Standard Opcode Encodings.
+enum LineNumberOps : uint8_t {
+#define HANDLE_DW_LNS(ID, NAME) DW_LNS_##NAME = ID,
+#include "llvm/BinaryFormat/Dwarf.def"
+};
+
+/// Line Number Extended Opcode Encodings.
+enum LineNumberExtendedOps {
+#define HANDLE_DW_LNE(ID, NAME) DW_LNE_##NAME = ID,
+#include "llvm/BinaryFormat/Dwarf.def"
+ DW_LNE_lo_user = 0x80,
+ DW_LNE_hi_user = 0xff
+};
+
+enum LineNumberEntryFormat {
+#define HANDLE_DW_LNCT(ID, NAME) DW_LNCT_##NAME = ID,
+#include "llvm/BinaryFormat/Dwarf.def"
+ DW_LNCT_lo_user = 0x2000,
+ DW_LNCT_hi_user = 0x3fff,
+};
+
+enum MacinfoRecordType {
+ // Macinfo Type Encodings
+ DW_MACINFO_define = 0x01,
+ DW_MACINFO_undef = 0x02,
+ DW_MACINFO_start_file = 0x03,
+ DW_MACINFO_end_file = 0x04,
+ DW_MACINFO_vendor_ext = 0xff
+};
+
+/// DWARF v5 macro information entry type encodings.
+enum MacroEntryType {
+#define HANDLE_DW_MACRO(ID, NAME) DW_MACRO_##NAME = ID,
+#include "llvm/BinaryFormat/Dwarf.def"
+ DW_MACRO_lo_user = 0xe0,
+ DW_MACRO_hi_user = 0xff
+};
+
+/// DWARF v5 range list entry encoding values.
+enum RangeListEntries {
+#define HANDLE_DW_RLE(ID, NAME) DW_RLE_##NAME = ID,
+#include "llvm/BinaryFormat/Dwarf.def"
+};
+
+/// Call frame instruction encodings.
+enum CallFrameInfo {
+#define HANDLE_DW_CFA(ID, NAME) DW_CFA_##NAME = ID,
+#include "llvm/BinaryFormat/Dwarf.def"
+ DW_CFA_extended = 0x00,
+
+ DW_CFA_lo_user = 0x1c,
+ DW_CFA_hi_user = 0x3f
+};
+
+enum Constants {
+ // Children flag
+ DW_CHILDREN_no = 0x00,
+ DW_CHILDREN_yes = 0x01,
+
+ DW_EH_PE_absptr = 0x00,
+ DW_EH_PE_omit = 0xff,
+ DW_EH_PE_uleb128 = 0x01,
+ DW_EH_PE_udata2 = 0x02,
+ DW_EH_PE_udata4 = 0x03,
+ DW_EH_PE_udata8 = 0x04,
+ DW_EH_PE_sleb128 = 0x09,
+ DW_EH_PE_sdata2 = 0x0A,
+ DW_EH_PE_sdata4 = 0x0B,
+ DW_EH_PE_sdata8 = 0x0C,
+ DW_EH_PE_signed = 0x08,
+ DW_EH_PE_pcrel = 0x10,
+ DW_EH_PE_textrel = 0x20,
+ DW_EH_PE_datarel = 0x30,
+ DW_EH_PE_funcrel = 0x40,
+ DW_EH_PE_aligned = 0x50,
+ DW_EH_PE_indirect = 0x80
+};
+
+/// Constants for location lists in DWARF v5.
+enum LocationListEntry : unsigned char {
+ DW_LLE_end_of_list = 0x00,
+ DW_LLE_base_addressx = 0x01,
+ DW_LLE_startx_endx = 0x02,
+ DW_LLE_startx_length = 0x03,
+ DW_LLE_offset_pair = 0x04,
+ DW_LLE_default_location = 0x05,
+ DW_LLE_base_address = 0x06,
+ DW_LLE_start_end = 0x07,
+ DW_LLE_start_length = 0x08
+};
+
+/// Constants for the DW_APPLE_PROPERTY_attributes attribute.
+/// Keep this list in sync with clang's DeclSpec.h ObjCPropertyAttributeKind!
+enum ApplePropertyAttributes {
+#define HANDLE_DW_APPLE_PROPERTY(ID, NAME) DW_APPLE_PROPERTY_##NAME = ID,
+#include "llvm/BinaryFormat/Dwarf.def"
+};
+
+/// Constants for unit types in DWARF v5.
+enum UnitType : unsigned char {
+#define HANDLE_DW_UT(ID, NAME) DW_UT_##NAME = ID,
+#include "llvm/BinaryFormat/Dwarf.def"
+ DW_UT_lo_user = 0x80,
+ DW_UT_hi_user = 0xff
+};
+
+enum Index {
+#define HANDLE_DW_IDX(ID, NAME) DW_IDX_##NAME = ID,
+#include "llvm/BinaryFormat/Dwarf.def"
+ DW_IDX_lo_user = 0x2000,
+ DW_IDX_hi_user = 0x3fff
+};
+
+inline bool isUnitType(uint8_t UnitType) {
+ switch (UnitType) {
+ case DW_UT_compile:
+ case DW_UT_type:
+ case DW_UT_partial:
+ case DW_UT_skeleton:
+ case DW_UT_split_compile:
+ case DW_UT_split_type:
+ return true;
+ default:
+ return false;
+ }
+}
+
+inline bool isUnitType(dwarf::Tag T) {
+ switch (T) {
+ case DW_TAG_compile_unit:
+ case DW_TAG_type_unit:
+ case DW_TAG_partial_unit:
+ case DW_TAG_skeleton_unit:
+ return true;
+ default:
+ return false;
+ }
+}
+
+// Constants for the DWARF v5 Accelerator Table Proposal
+enum AcceleratorTable {
+ // Data layout descriptors.
+ DW_ATOM_null = 0u, /// Marker as the end of a list of atoms.
+ DW_ATOM_die_offset = 1u, // DIE offset in the debug_info section.
+ DW_ATOM_cu_offset = 2u, // Offset of the compile unit header that contains the
+ // item in question.
+ DW_ATOM_die_tag = 3u, // A tag entry.
+ DW_ATOM_type_flags = 4u, // Set of flags for a type.
+
+ DW_ATOM_type_type_flags = 5u, // Dsymutil type extension.
+ DW_ATOM_qual_name_hash = 6u, // Dsymutil qualified hash extension.
+
+ // DW_ATOM_type_flags values.
+
+ // Always set for C++, only set for ObjC if this is the @implementation for a
+ // class.
+ DW_FLAG_type_implementation = 2u,
+
+ // Hash functions.
+
+ // Daniel J. Bernstein hash.
+ DW_hash_function_djb = 0u
+};
+
+// Constants for the GNU pubnames/pubtypes extensions supporting gdb index.
+enum GDBIndexEntryKind {
+ GIEK_NONE,
+ GIEK_TYPE,
+ GIEK_VARIABLE,
+ GIEK_FUNCTION,
+ GIEK_OTHER,
+ GIEK_UNUSED5,
+ GIEK_UNUSED6,
+ GIEK_UNUSED7
+};
+
+enum GDBIndexEntryLinkage { GIEL_EXTERNAL, GIEL_STATIC };
+
+/// \defgroup DwarfConstantsDumping Dwarf constants dumping functions
+///
+/// All these functions map their argument's value back to the
+/// corresponding enumerator name or return an empty StringRef if the value
+/// isn't known.
+///
+/// @{
+StringRef TagString(unsigned Tag);
+StringRef ChildrenString(unsigned Children);
+StringRef AttributeString(unsigned Attribute);
+StringRef FormEncodingString(unsigned Encoding);
+StringRef OperationEncodingString(unsigned Encoding);
+StringRef AttributeEncodingString(unsigned Encoding);
+StringRef DecimalSignString(unsigned Sign);
+StringRef EndianityString(unsigned Endian);
+StringRef AccessibilityString(unsigned Access);
+StringRef VisibilityString(unsigned Visibility);
+StringRef VirtualityString(unsigned Virtuality);
+StringRef LanguageString(unsigned Language);
+StringRef CaseString(unsigned Case);
+StringRef ConventionString(unsigned Convention);
+StringRef InlineCodeString(unsigned Code);
+StringRef ArrayOrderString(unsigned Order);
+StringRef LNStandardString(unsigned Standard);
+StringRef LNExtendedString(unsigned Encoding);
+StringRef MacinfoString(unsigned Encoding);
+StringRef RangeListEncodingString(unsigned Encoding);
+StringRef CallFrameString(unsigned Encoding);
+StringRef ApplePropertyString(unsigned);
+StringRef UnitTypeString(unsigned);
+StringRef AtomTypeString(unsigned Atom);
+StringRef GDBIndexEntryKindString(GDBIndexEntryKind Kind);
+StringRef GDBIndexEntryLinkageString(GDBIndexEntryLinkage Linkage);
+StringRef IndexString(unsigned Idx);
+/// @}
+
+/// \defgroup DwarfConstantsParsing Dwarf constants parsing functions
+///
+/// These functions map their strings back to the corresponding enumeration
+/// value or return 0 if there is none, except for these exceptions:
+///
+/// \li \a getTag() returns \a DW_TAG_invalid on invalid input.
+/// \li \a getVirtuality() returns \a DW_VIRTUALITY_invalid on invalid input.
+/// \li \a getMacinfo() returns \a DW_MACINFO_invalid on invalid input.
+///
+/// @{
+unsigned getTag(StringRef TagString);
+unsigned getOperationEncoding(StringRef OperationEncodingString);
+unsigned getVirtuality(StringRef VirtualityString);
+unsigned getLanguage(StringRef LanguageString);
+unsigned getCallingConvention(StringRef LanguageString);
+unsigned getAttributeEncoding(StringRef EncodingString);
+unsigned getMacinfo(StringRef MacinfoString);
+/// @}
+
+/// \defgroup DwarfConstantsVersioning Dwarf version for constants
+///
+/// For constants defined by DWARF, returns the DWARF version when the constant
+/// was first defined. For vendor extensions, if there is a version-related
+/// policy for when to emit it, returns a version number for that policy.
+/// Otherwise returns 0.
+///
+/// @{
+unsigned TagVersion(Tag T);
+unsigned AttributeVersion(Attribute A);
+unsigned FormVersion(Form F);
+unsigned OperationVersion(LocationAtom O);
+unsigned AttributeEncodingVersion(TypeKind E);
+unsigned LanguageVersion(SourceLanguage L);
+/// @}
+
+/// \defgroup DwarfConstantsVendor Dwarf "vendor" for constants
+///
+/// These functions return an identifier describing "who" defined the constant,
+/// either the DWARF standard itself or the vendor who defined the extension.
+///
+/// @{
+unsigned TagVendor(Tag T);
+unsigned AttributeVendor(Attribute A);
+unsigned FormVendor(Form F);
+unsigned OperationVendor(LocationAtom O);
+unsigned AttributeEncodingVendor(TypeKind E);
+unsigned LanguageVendor(SourceLanguage L);
+/// @}
+
+/// A helper struct providing information about the byte size of DW_FORM
+/// values that vary in size depending on the DWARF version, address byte
+/// size, or DWARF32/DWARF64.
+struct FormParams {
+ uint16_t Version;
+ uint8_t AddrSize;
+ DwarfFormat Format;
+
+ /// The definition of the size of form DW_FORM_ref_addr depends on the
+ /// version. In DWARF v2 it's the size of an address; after that, it's the
+ /// size of a reference.
+ uint8_t getRefAddrByteSize() const {
+ if (Version == 2)
+ return AddrSize;
+ return getDwarfOffsetByteSize();
+ }
+
+ /// The size of a reference is determined by the DWARF 32/64-bit format.
+ uint8_t getDwarfOffsetByteSize() const {
+ switch (Format) {
+ case DwarfFormat::DWARF32:
+ return 4;
+ case DwarfFormat::DWARF64:
+ return 8;
+ }
+ llvm_unreachable("Invalid Format value");
+ }
+
+ explicit operator bool() const { return Version && AddrSize; }
+};
+
+/// Get the fixed byte size for a given form.
+///
+/// If the form has a fixed byte size, then an Optional with a value will be
+/// returned. If the form is always encoded using a variable length storage
+/// format (ULEB or SLEB numbers or blocks) then None will be returned.
+///
+/// \param Form DWARF form to get the fixed byte size for.
+/// \param Params DWARF parameters to help interpret forms.
+/// \returns Optional<uint8_t> value with the fixed byte size or None if
+/// \p Form doesn't have a fixed byte size.
+Optional<uint8_t> getFixedFormByteSize(dwarf::Form Form, FormParams Params);
+
+/// Tells whether the specified form is defined in the specified version,
+/// or is an extension if extensions are allowed.
+bool isValidFormForVersion(Form F, unsigned Version, bool ExtensionsOk = true);
+
+/// Returns the symbolic string representing Val when used as a value
+/// for attribute Attr.
+StringRef AttributeValueString(uint16_t Attr, unsigned Val);
+
+/// Describes an entry of the various gnu_pub* debug sections.
+///
+/// The gnu_pub* kind looks like:
+///
+/// 0-3 reserved
+/// 4-6 symbol kind
+/// 7 0 == global, 1 == static
+///
+/// A gdb_index descriptor includes the above kind, shifted 24 bits up with the
+/// offset of the cu within the debug_info section stored in those 24 bits.
+struct PubIndexEntryDescriptor {
+ GDBIndexEntryKind Kind;
+ GDBIndexEntryLinkage Linkage;
+ PubIndexEntryDescriptor(GDBIndexEntryKind Kind, GDBIndexEntryLinkage Linkage)
+ : Kind(Kind), Linkage(Linkage) {}
+ /* implicit */ PubIndexEntryDescriptor(GDBIndexEntryKind Kind)
+ : Kind(Kind), Linkage(GIEL_EXTERNAL) {}
+ explicit PubIndexEntryDescriptor(uint8_t Value)
+ : Kind(
+ static_cast<GDBIndexEntryKind>((Value & KIND_MASK) >> KIND_OFFSET)),
+ Linkage(static_cast<GDBIndexEntryLinkage>((Value & LINKAGE_MASK) >>
+ LINKAGE_OFFSET)) {}
+ uint8_t toBits() const {
+ return Kind << KIND_OFFSET | Linkage << LINKAGE_OFFSET;
+ }
+
+private:
+ enum {
+ KIND_OFFSET = 4,
+ KIND_MASK = 7 << KIND_OFFSET,
+ LINKAGE_OFFSET = 7,
+ LINKAGE_MASK = 1 << LINKAGE_OFFSET
+ };
+};
+
+template <typename Enum> struct EnumTraits : public std::false_type {};
+
+template <> struct EnumTraits<Attribute> : public std::true_type {
+ static constexpr char Type[3] = "AT";
+ static constexpr StringRef (*StringFn)(unsigned) = &AttributeString;
+};
+
+template <> struct EnumTraits<Form> : public std::true_type {
+ static constexpr char Type[5] = "FORM";
+ static constexpr StringRef (*StringFn)(unsigned) = &FormEncodingString;
+};
+
+template <> struct EnumTraits<Index> : public std::true_type {
+ static constexpr char Type[4] = "IDX";
+ static constexpr StringRef (*StringFn)(unsigned) = &IndexString;
+};
+
+template <> struct EnumTraits<Tag> : public std::true_type {
+ static constexpr char Type[4] = "TAG";
+ static constexpr StringRef (*StringFn)(unsigned) = &TagString;
+};
+} // End of namespace dwarf
+
+/// Dwarf constants format_provider
+///
+/// Specialization of the format_provider template for dwarf enums. Unlike the
+/// dumping functions above, these format unknown enumerator values as
+/// DW_TYPE_unknown_1234 (e.g. DW_TAG_unknown_ffff).
+template <typename Enum>
+struct format_provider<
+ Enum, typename std::enable_if<dwarf::EnumTraits<Enum>::value>::type> {
+ static void format(const Enum &E, raw_ostream &OS, StringRef Style) {
+ StringRef Str = dwarf::EnumTraits<Enum>::StringFn(E);
+ if (Str.empty()) {
+ OS << "DW_" << dwarf::EnumTraits<Enum>::Type << "_unknown_"
+ << llvm::format("%x", E);
+ } else
+ OS << Str;
+ }
+};
+} // End of namespace llvm
+
+#endif