Update clang, llvm, lld, lldb, compiler-rt and libc++ to 4.0.0 release:

MFC r309142 (by emaste):

Add WITH_LLD_AS_LD build knob

If set it installs LLD as /usr/bin/ld.  LLD (as of version 3.9) is not
capable of linking the world and kernel, but can self-host and link many
substantial applications. GNU ld continues to be used for the world and
kernel build, regardless of how this knob is set.

It is on by default for arm64, and off for all other CPU architectures.

Sponsored by:	The FreeBSD Foundation

MFC r310840:

Reapply 310775, now it also builds correctly if lldb is disabled:

Move llvm-objdump from CLANG_EXTRAS to installed by default

We currently install three tools from binutils 2.17.50: as, ld, and
objdump. Work is underway to migrate to a permissively-licensed
tool-chain, with one goal being the retirement of binutils 2.17.50.

LLVM's llvm-objdump is intended to be compatible with GNU objdump
although it is currently missing some options and may have formatting
differences. Enable it by default for testing and further investigation.
It may later be changed to install as /usr/bin/objdump, it becomes a
fully viable replacement.

Reviewed by:	emaste
Differential Revision:	https://reviews.freebsd.org/D8879

MFC r312855 (by emaste):

Rename LLD_AS_LD to LLD_IS_LD, for consistency with CLANG_IS_CC

Reported by:	Dan McGregor <dan.mcgregor usask.ca>

MFC r313559 | glebius | 2017-02-10 18:34:48 +0100 (Fri, 10 Feb 2017) | 5 lines

Don't check struct rtentry on FreeBSD, it is an internal kernel structure.
On other systems it may be API structure for SIOCADDRT/SIOCDELRT.

Reviewed by:	emaste, dim

MFC r314152 (by jkim):

Remove an assembler flag, which is redundant since r309124.  The upstream
took care of it by introducing a macro NO_EXEC_STACK_DIRECTIVE.

http://llvm.org/viewvc/llvm-project?rev=273500&view=rev

Reviewed by:	dim

MFC r314564:

Upgrade our copies of clang, llvm, lld, lldb, compiler-rt and libc++ to
4.0.0 (branches/release_40 296509).  The release will follow soon.

Please note that from 3.5.0 onwards, clang, llvm and lldb require C++11
support to build; see UPDATING for more information.

Also note that as of 4.0.0, lld should be able to link the base system
on amd64 and aarch64.  See the WITH_LLD_IS_LLD setting in src.conf(5).
Though please be aware that this is work in progress.

Release notes for llvm, clang and lld will be available here:
<http://releases.llvm.org/4.0.0/docs/ReleaseNotes.html>
<http://releases.llvm.org/4.0.0/tools/clang/docs/ReleaseNotes.html>
<http://releases.llvm.org/4.0.0/tools/lld/docs/ReleaseNotes.html>

Thanks to Ed Maste, Jan Beich, Antoine Brodin and Eric Fiselier for
their help.

Relnotes:	yes
Exp-run:	antoine
PR:		215969, 216008

MFC r314708:

For now, revert r287232 from upstream llvm trunk (by Daniil Fukalov):

  [SCEV] limit recursion depth of CompareSCEVComplexity

  Summary:
  CompareSCEVComplexity goes too deep (50+ on a quite a big unrolled
  loop) and runs almost infinite time.

  Added cache of "equal" SCEV pairs to earlier cutoff of further
  estimation. Recursion depth limit was also introduced as a parameter.

  Reviewers: sanjoy

  Subscribers: mzolotukhin, tstellarAMD, llvm-commits

  Differential Revision: https://reviews.llvm.org/D26389

This commit is the cause of excessive compile times on skein_block.c
(and possibly other files) during kernel builds on amd64.

We never saw the problematic behavior described in this upstream commit,
so for now it is better to revert it.  An upstream bug has been filed
here: https://bugs.llvm.org/show_bug.cgi?id=32142

Reported by:	mjg

MFC r314795:

Reapply r287232 from upstream llvm trunk (by Daniil Fukalov):

  [SCEV] limit recursion depth of CompareSCEVComplexity

  Summary:
  CompareSCEVComplexity goes too deep (50+ on a quite a big unrolled
  loop) and runs almost infinite time.

  Added cache of "equal" SCEV pairs to earlier cutoff of further
  estimation. Recursion depth limit was also introduced as a parameter.

  Reviewers: sanjoy

  Subscribers: mzolotukhin, tstellarAMD, llvm-commits

  Differential Revision: https://reviews.llvm.org/D26389

Pull in r296992 from upstream llvm trunk (by Sanjoy Das):

  [SCEV] Decrease the recursion threshold for CompareValueComplexity

  Fixes PR32142.

  r287232 accidentally increased the recursion threshold for
  CompareValueComplexity from 2 to 32.  This change reverses that
  change by introducing a separate flag for CompareValueComplexity's
  threshold.

The latter revision fixes the excessive compile times for skein_block.c.

MFC r314907 | mmel | 2017-03-08 12:40:27 +0100 (Wed, 08 Mar 2017) | 7 lines

Unbreak ARMv6 world.

The new compiler_rt library imported with clang 4.0.0 have several fatal
issues (non-functional __udivsi3 for example) with ARM specific instrict
functions. As temporary workaround, until upstream solve these problems,
disable all thumb[1][2] related feature.

MFC r315016:

Update clang, llvm, lld, lldb, compiler-rt and libc++ to 4.0.0 release.
We were already very close to the last release candidate, so this is a
pretty minor update.

Relnotes:	yes

MFC r316005:

Revert r314907, and pull in r298713 from upstream compiler-rt trunk (by
Weiming Zhao):

  builtins: Select correct code fragments when compiling for Thumb1/Thum2/ARM ISA.

  Summary:
  Value of __ARM_ARCH_ISA_THUMB isn't based on the actual compilation
  mode (-mthumb, -marm), it reflect's capability of given CPU.

  Due to this:
   - use  __tbumb__ and __thumb2__ insteand of __ARM_ARCH_ISA_THUMB
   - use '.thumb' directive consistently  in all affected files
   - decorate all thumb functions using
     DEFINE_COMPILERRT_THUMB_FUNCTION()

  ---------
  Note: This patch doesn't fix broken Thumb1 variant of __udivsi3 !

  Reviewers: weimingz, rengolin, compnerd

  Subscribers: aemerson, dim

  Differential Revision: https://reviews.llvm.org/D30938

Discussed with:	mmel

1 files changed, 24 insertions, 412 deletions

diff --git a/contrib/llvm/lib/DebugInfo/DWARF/DWARFDebugInfoEntry.cpp b/contrib/llvm/lib/DebugInfo/DWARF/DWARFDebugInfoEntry.cpp
index 62d5e66..c487e1d 100644
--- a/contrib/llvm/lib/DebugInfo/DWARF/DWARFDebugInfoEntry.cpp
+++ b/contrib/llvm/lib/DebugInfo/DWARF/DWARFDebugInfoEntry.cpp
@@ -22,170 +22,17 @@ using namespace llvm;
 using namespace dwarf;
 using namespace syntax;
 
-// Small helper to extract a DIE pointed by a reference
-// attribute. It looks up the Unit containing the DIE and calls
-// DIE.extractFast with the right unit. Returns new unit on success,
-// nullptr otherwise.
-static const DWARFUnit *findUnitAndExtractFast(DWARFDebugInfoEntryMinimal &DIE,
-                                               const DWARFUnit *Unit,
-                                               uint32_t *Offset) {
-  Unit = Unit->getUnitSection().getUnitForOffset(*Offset);
-  return (Unit && DIE.extractFast(Unit, Offset)) ? Unit : nullptr;
-}
-
-void DWARFDebugInfoEntryMinimal::dump(raw_ostream &OS, DWARFUnit *u,
-                                      unsigned recurseDepth,
-                                      unsigned indent) const {
-  DataExtractor debug_info_data = u->getDebugInfoExtractor();
-  uint32_t offset = Offset;
-
-  if (debug_info_data.isValidOffset(offset)) {
-    uint32_t abbrCode = debug_info_data.getULEB128(&offset);
-    WithColor(OS, syntax::Address).get() << format("\n0x%8.8x: ", Offset);
-
-    if (abbrCode) {
-      if (AbbrevDecl) {
-          const char *tagString = TagString(getTag());
-          if (tagString)
-            WithColor(OS, syntax::Tag).get().indent(indent) << tagString;
-          else
-            WithColor(OS, syntax::Tag).get().indent(indent) <<
-              format("DW_TAG_Unknown_%x", getTag());
-
-        OS << format(" [%u] %c\n", abbrCode,
-                     AbbrevDecl->hasChildren() ? '*' : ' ');
-
-        // Dump all data in the DIE for the attributes.
-        for (const auto &AttrSpec : AbbrevDecl->attributes()) {
-          dumpAttribute(OS, u, &offset, AttrSpec.Attr, AttrSpec.Form, indent);
-        }
-
-        const DWARFDebugInfoEntryMinimal *child = getFirstChild();
-        if (recurseDepth > 0 && child) {
-          while (child) {
-            child->dump(OS, u, recurseDepth-1, indent+2);
-            child = child->getSibling();
-          }
-        }
-      } else {
-        OS << "Abbreviation code not found in 'debug_abbrev' class for code: "
-           << abbrCode << '\n';
-      }
-    } else {
-      OS.indent(indent) << "NULL\n";
-    }
-  }
-}
-
-static void dumpApplePropertyAttribute(raw_ostream &OS, uint64_t Val) {
-  OS << " (";
-  do {
-    uint64_t Shift = countTrailingZeros(Val);
-    assert(Shift < 64 && "undefined behavior");
-    uint64_t Bit = 1ULL << Shift;
-    if (const char *PropName = ApplePropertyString(Bit))
-      OS << PropName;
-    else
-      OS << format("DW_APPLE_PROPERTY_0x%" PRIx64, Bit);
-    if (!(Val ^= Bit))
-      break;
-    OS << ", ";
-  } while (true);
-  OS << ")";
-}
-
-static void dumpRanges(raw_ostream &OS, const DWARFAddressRangesVector& Ranges,
-                       unsigned AddressSize, unsigned Indent) {
-  if (Ranges.empty())
-    return;
-
-  for (const auto &Range: Ranges) {
-    OS << '\n';
-    OS.indent(Indent);
-    OS << format("[0x%0*" PRIx64 " - 0x%0*" PRIx64 ")",
-                 AddressSize*2, Range.first,
-                 AddressSize*2, Range.second);
-  }
-}
-
-void DWARFDebugInfoEntryMinimal::dumpAttribute(raw_ostream &OS,
-                                               DWARFUnit *u,
-                                               uint32_t *offset_ptr,
-                                               uint16_t attr, uint16_t form,
-                                               unsigned indent) const {
-  const char BaseIndent[] = "            ";
-  OS << BaseIndent;
-  OS.indent(indent+2);
-  const char *attrString = AttributeString(attr);
-  if (attrString)
-    WithColor(OS, syntax::Attribute) << attrString;
-  else
-    WithColor(OS, syntax::Attribute).get() << format("DW_AT_Unknown_%x", attr);
-
-  const char *formString = FormEncodingString(form);
-  if (formString)
-    OS << " [" << formString << ']';
-  else
-    OS << format(" [DW_FORM_Unknown_%x]", form);
-
-  DWARFFormValue formValue(form);
-
-  if (!formValue.extractValue(u->getDebugInfoExtractor(), offset_ptr, u))
-    return;
-
-  OS << "\t(";
-  
-  const char *Name = nullptr;
-  std::string File;
-  auto Color = syntax::Enumerator;
-  if (attr == DW_AT_decl_file || attr == DW_AT_call_file) {
-    Color = syntax::String;
-    if (const auto *LT = u->getContext().getLineTableForUnit(u))
-      if (LT->getFileNameByIndex(
-             formValue.getAsUnsignedConstant().getValue(),
-             u->getCompilationDir(),
-             DILineInfoSpecifier::FileLineInfoKind::AbsoluteFilePath, File)) {
-        File = '"' + File + '"';
-        Name = File.c_str();
-      }
-  } else if (Optional<uint64_t> Val = formValue.getAsUnsignedConstant())
-    Name = AttributeValueString(attr, *Val);
-
-  if (Name)
-    WithColor(OS, Color) << Name;
-  else if (attr == DW_AT_decl_line || attr == DW_AT_call_line)
-    OS << *formValue.getAsUnsignedConstant();
-  else
-    formValue.dump(OS, u);
-
-  // We have dumped the attribute raw value. For some attributes
-  // having both the raw value and the pretty-printed value is
-  // interesting. These attributes are handled below.
-  if (attr == DW_AT_specification || attr == DW_AT_abstract_origin) {
-    Optional<uint64_t> Ref = formValue.getAsReference(u);
-    if (Ref.hasValue()) {
-      uint32_t RefOffset = Ref.getValue();
-      DWARFDebugInfoEntryMinimal DIE;
-      if (const DWARFUnit *RefU = findUnitAndExtractFast(DIE, u, &RefOffset))
-        if (const char *Name = DIE.getName(RefU, DINameKind::LinkageName))
-          OS << " \"" << Name << '\"';
-    }
-  } else if (attr == DW_AT_APPLE_property_attribute) {
-    if (Optional<uint64_t> OptVal = formValue.getAsUnsignedConstant())
-      dumpApplePropertyAttribute(OS, *OptVal);
-  } else if (attr == DW_AT_ranges) {
-    dumpRanges(OS, getAddressRanges(u), u->getAddressByteSize(),
-               sizeof(BaseIndent)+indent+4);
-  }
-
-  OS << ")\n";
-}
-
-bool DWARFDebugInfoEntryMinimal::extractFast(const DWARFUnit *U,
+bool DWARFDebugInfoEntry::extractFast(const DWARFUnit &U,
                                              uint32_t *OffsetPtr) {
+  DataExtractor DebugInfoData = U.getDebugInfoExtractor();
+  const uint32_t UEndOffset = U.getNextUnitOffset();
+  return extractFast(U, OffsetPtr, DebugInfoData, UEndOffset, 0);
+}
+bool DWARFDebugInfoEntry::extractFast(const DWARFUnit &U, uint32_t *OffsetPtr,
+                                      const DataExtractor &DebugInfoData,
+                                      uint32_t UEndOffset, uint32_t D) {
   Offset = *OffsetPtr;
-  DataExtractor DebugInfoData = U->getDebugInfoExtractor();
-  uint32_t UEndOffset = U->getNextUnitOffset();
+  Depth = D;
   if (Offset >= UEndOffset || !DebugInfoData.isValidOffset(Offset))
     return false;
   uint64_t AbbrCode = DebugInfoData.getULEB128(OffsetPtr);
@@ -194,267 +41,32 @@ bool DWARFDebugInfoEntryMinimal::extractFast(const DWARFUnit *U,
     AbbrevDecl = nullptr;
     return true;
   }
-  AbbrevDecl = U->getAbbreviations()->getAbbreviationDeclaration(AbbrCode);
+  AbbrevDecl = U.getAbbreviations()->getAbbreviationDeclaration(AbbrCode);
   if (nullptr == AbbrevDecl) {
     // Restore the original offset.
     *OffsetPtr = Offset;
     return false;
   }
-  ArrayRef<uint8_t> FixedFormSizes = DWARFFormValue::getFixedFormSizes(
-      U->getAddressByteSize(), U->getVersion());
-  assert(FixedFormSizes.size() > 0);
+  // See if all attributes in this DIE have fixed byte sizes. If so, we can
+  // just add this size to the offset to skip to the next DIE.
+  if (Optional<size_t> FixedSize = AbbrevDecl->getFixedAttributesByteSize(U)) {
+    *OffsetPtr += *FixedSize;
+    return true;
+  }
 
   // Skip all data in the .debug_info for the attributes
   for (const auto &AttrSpec : AbbrevDecl->attributes()) {
-    uint16_t Form = AttrSpec.Form;
-
-    uint8_t FixedFormSize =
-        (Form < FixedFormSizes.size()) ? FixedFormSizes[Form] : 0;
-    if (FixedFormSize)
-      *OffsetPtr += FixedFormSize;
-    else if (!DWARFFormValue::skipValue(Form, DebugInfoData, OffsetPtr, U)) {
-      // Restore the original offset.
+    // Check if this attribute has a fixed byte size.
+    if (auto FixedSize = AttrSpec.getByteSize(U)) {
+      // Attribute byte size if fixed, just add the size to the offset.
+      *OffsetPtr += *FixedSize;
+    } else if (!DWARFFormValue::skipValue(AttrSpec.Form, DebugInfoData,
+                                          OffsetPtr, &U)) {
+      // We failed to skip this attribute's value, restore the original offset
+      // and return the failure status.
       *OffsetPtr = Offset;
       return false;
     }
   }
   return true;
 }
-
-bool DWARFDebugInfoEntryMinimal::isSubprogramDIE() const {
-  return getTag() == DW_TAG_subprogram;
-}
-
-bool DWARFDebugInfoEntryMinimal::isSubroutineDIE() const {
-  uint32_t Tag = getTag();
-  return Tag == DW_TAG_subprogram ||
-         Tag == DW_TAG_inlined_subroutine;
-}
-
-bool DWARFDebugInfoEntryMinimal::getAttributeValue(
-    const DWARFUnit *U, const uint16_t Attr, DWARFFormValue &FormValue) const {
-  if (!AbbrevDecl)
-    return false;
-
-  uint32_t AttrIdx = AbbrevDecl->findAttributeIndex(Attr);
-  if (AttrIdx == -1U)
-    return false;
-
-  DataExtractor DebugInfoData = U->getDebugInfoExtractor();
-  uint32_t DebugInfoOffset = getOffset();
-
-  // Skip the abbreviation code so we are at the data for the attributes
-  DebugInfoData.getULEB128(&DebugInfoOffset);
-
-  // Skip preceding attribute values.
-  for (uint32_t i = 0; i < AttrIdx; ++i) {
-    DWARFFormValue::skipValue(AbbrevDecl->getFormByIndex(i),
-                              DebugInfoData, &DebugInfoOffset, U);
-  }
-
-  FormValue = DWARFFormValue(AbbrevDecl->getFormByIndex(AttrIdx));
-  return FormValue.extractValue(DebugInfoData, &DebugInfoOffset, U);
-}
-
-const char *DWARFDebugInfoEntryMinimal::getAttributeValueAsString(
-    const DWARFUnit *U, const uint16_t Attr, const char *FailValue) const {
-  DWARFFormValue FormValue;
-  if (!getAttributeValue(U, Attr, FormValue))
-    return FailValue;
-  Optional<const char *> Result = FormValue.getAsCString(U);
-  return Result.hasValue() ? Result.getValue() : FailValue;
-}
-
-uint64_t DWARFDebugInfoEntryMinimal::getAttributeValueAsAddress(
-    const DWARFUnit *U, const uint16_t Attr, uint64_t FailValue) const {
-  DWARFFormValue FormValue;
-  if (!getAttributeValue(U, Attr, FormValue))
-    return FailValue;
-  Optional<uint64_t> Result = FormValue.getAsAddress(U);
-  return Result.hasValue() ? Result.getValue() : FailValue;
-}
-
-uint64_t DWARFDebugInfoEntryMinimal::getAttributeValueAsUnsignedConstant(
-    const DWARFUnit *U, const uint16_t Attr, uint64_t FailValue) const {
-  DWARFFormValue FormValue;
-  if (!getAttributeValue(U, Attr, FormValue))
-    return FailValue;
-  Optional<uint64_t> Result = FormValue.getAsUnsignedConstant();
-  return Result.hasValue() ? Result.getValue() : FailValue;
-}
-
-uint64_t DWARFDebugInfoEntryMinimal::getAttributeValueAsReference(
-    const DWARFUnit *U, const uint16_t Attr, uint64_t FailValue) const {
-  DWARFFormValue FormValue;
-  if (!getAttributeValue(U, Attr, FormValue))
-    return FailValue;
-  Optional<uint64_t> Result = FormValue.getAsReference(U);
-  return Result.hasValue() ? Result.getValue() : FailValue;
-}
-
-uint64_t DWARFDebugInfoEntryMinimal::getAttributeValueAsSectionOffset(
-    const DWARFUnit *U, const uint16_t Attr, uint64_t FailValue) const {
-  DWARFFormValue FormValue;
-  if (!getAttributeValue(U, Attr, FormValue))
-    return FailValue;
-  Optional<uint64_t> Result = FormValue.getAsSectionOffset();
-  return Result.hasValue() ? Result.getValue() : FailValue;
-}
-
-uint64_t
-DWARFDebugInfoEntryMinimal::getRangesBaseAttribute(const DWARFUnit *U,
-                                                   uint64_t FailValue) const {
-  uint64_t Result =
-      getAttributeValueAsSectionOffset(U, DW_AT_ranges_base, -1ULL);
-  if (Result != -1ULL)
-    return Result;
-  return getAttributeValueAsSectionOffset(U, DW_AT_GNU_ranges_base, FailValue);
-}
-
-bool DWARFDebugInfoEntryMinimal::getLowAndHighPC(const DWARFUnit *U,
-                                                 uint64_t &LowPC,
-                                                 uint64_t &HighPC) const {
-  LowPC = getAttributeValueAsAddress(U, DW_AT_low_pc, -1ULL);
-  if (LowPC == -1ULL)
-    return false;
-  HighPC = getAttributeValueAsAddress(U, DW_AT_high_pc, -1ULL);
-  if (HighPC == -1ULL) {
-    // Since DWARF4, DW_AT_high_pc may also be of class constant, in which case
-    // it represents function size.
-    HighPC = getAttributeValueAsUnsignedConstant(U, DW_AT_high_pc, -1ULL);
-    if (HighPC != -1ULL)
-      HighPC += LowPC;
-  }
-  return (HighPC != -1ULL);
-}
-
-DWARFAddressRangesVector
-DWARFDebugInfoEntryMinimal::getAddressRanges(const DWARFUnit *U) const {
-  if (isNULL())
-    return DWARFAddressRangesVector();
-  // Single range specified by low/high PC.
-  uint64_t LowPC, HighPC;
-  if (getLowAndHighPC(U, LowPC, HighPC)) {
-    return DWARFAddressRangesVector(1, std::make_pair(LowPC, HighPC));
-  }
-  // Multiple ranges from .debug_ranges section.
-  uint32_t RangesOffset =
-      getAttributeValueAsSectionOffset(U, DW_AT_ranges, -1U);
-  if (RangesOffset != -1U) {
-    DWARFDebugRangeList RangeList;
-    if (U->extractRangeList(RangesOffset, RangeList))
-      return RangeList.getAbsoluteRanges(U->getBaseAddress());
-  }
-  return DWARFAddressRangesVector();
-}
-
-void DWARFDebugInfoEntryMinimal::collectChildrenAddressRanges(
-    const DWARFUnit *U, DWARFAddressRangesVector& Ranges) const {
-  if (isNULL())
-    return;
-  if (isSubprogramDIE()) {
-    const auto &DIERanges = getAddressRanges(U);
-    Ranges.insert(Ranges.end(), DIERanges.begin(), DIERanges.end());
-  }
-
-  const DWARFDebugInfoEntryMinimal *Child = getFirstChild();
-  while (Child) {
-    Child->collectChildrenAddressRanges(U, Ranges);
-    Child = Child->getSibling();
-  }
-}
-
-bool DWARFDebugInfoEntryMinimal::addressRangeContainsAddress(
-    const DWARFUnit *U, const uint64_t Address) const {
-  for (const auto& R : getAddressRanges(U)) {
-    if (R.first <= Address && Address < R.second)
-      return true;
-  }
-  return false;
-}
-
-const char *
-DWARFDebugInfoEntryMinimal::getSubroutineName(const DWARFUnit *U,
-                                              DINameKind Kind) const {
-  if (!isSubroutineDIE())
-    return nullptr;
-  return getName(U, Kind);
-}
-
-const char *
-DWARFDebugInfoEntryMinimal::getName(const DWARFUnit *U,
-                                    DINameKind Kind) const {
-  if (Kind == DINameKind::None)
-    return nullptr;
-  // Try to get mangled name only if it was asked for.
-  if (Kind == DINameKind::LinkageName) {
-    if (const char *name =
-            getAttributeValueAsString(U, DW_AT_MIPS_linkage_name, nullptr))
-      return name;
-    if (const char *name =
-            getAttributeValueAsString(U, DW_AT_linkage_name, nullptr))
-      return name;
-  }
-  if (const char *name = getAttributeValueAsString(U, DW_AT_name, nullptr))
-    return name;
-  // Try to get name from specification DIE.
-  uint32_t spec_ref =
-      getAttributeValueAsReference(U, DW_AT_specification, -1U);
-  if (spec_ref != -1U) {
-    DWARFDebugInfoEntryMinimal spec_die;
-    if (const DWARFUnit *RefU = findUnitAndExtractFast(spec_die, U, &spec_ref)) {
-      if (const char *name = spec_die.getName(RefU, Kind))
-        return name;
-    }
-  }
-  // Try to get name from abstract origin DIE.
-  uint32_t abs_origin_ref =
-      getAttributeValueAsReference(U, DW_AT_abstract_origin, -1U);
-  if (abs_origin_ref != -1U) {
-    DWARFDebugInfoEntryMinimal abs_origin_die;
-    if (const DWARFUnit *RefU = findUnitAndExtractFast(abs_origin_die, U,
-                                                       &abs_origin_ref)) {
-      if (const char *name = abs_origin_die.getName(RefU, Kind))
-        return name;
-    }
-  }
-  return nullptr;
-}
-
-void DWARFDebugInfoEntryMinimal::getCallerFrame(const DWARFUnit *U,
-                                                uint32_t &CallFile,
-                                                uint32_t &CallLine,
-                                                uint32_t &CallColumn) const {
-  CallFile = getAttributeValueAsUnsignedConstant(U, DW_AT_call_file, 0);
-  CallLine = getAttributeValueAsUnsignedConstant(U, DW_AT_call_line, 0);
-  CallColumn = getAttributeValueAsUnsignedConstant(U, DW_AT_call_column, 0);
-}
-
-DWARFDebugInfoEntryInlinedChain
-DWARFDebugInfoEntryMinimal::getInlinedChainForAddress(
-    const DWARFUnit *U, const uint64_t Address) const {
-  DWARFDebugInfoEntryInlinedChain InlinedChain;
-  InlinedChain.U = U;
-  if (isNULL())
-    return InlinedChain;
-  for (const DWARFDebugInfoEntryMinimal *DIE = this; DIE; ) {
-    // Append current DIE to inlined chain only if it has correct tag
-    // (e.g. it is not a lexical block).
-    if (DIE->isSubroutineDIE()) {
-      InlinedChain.DIEs.push_back(*DIE);
-    }
-    // Try to get child which also contains provided address.
-    const DWARFDebugInfoEntryMinimal *Child = DIE->getFirstChild();
-    while (Child) {
-      if (Child->addressRangeContainsAddress(U, Address)) {
-        // Assume there is only one such child.
-        break;
-      }
-      Child = Child->getSibling();
-    }
-    DIE = Child;
-  }
-  // Reverse the obtained chain to make the root of inlined chain last.
-  std::reverse(InlinedChain.DIEs.begin(), InlinedChain.DIEs.end());
-  return InlinedChain;
-}