Restoring authorship annotation for <orivej@yandex-team.ru>. Commit 2 of 2.

1 files changed, 876 insertions, 876 deletions

diff --git a/contrib/libs/llvm12/lib/MC/MCParser/ELFAsmParser.cpp b/contrib/libs/llvm12/lib/MC/MCParser/ELFAsmParser.cpp
index 243cdc2e3e..65ac1d6b5b 100644
--- a/contrib/libs/llvm12/lib/MC/MCParser/ELFAsmParser.cpp
+++ b/contrib/libs/llvm12/lib/MC/MCParser/ELFAsmParser.cpp
@@ -1,888 +1,888 @@
-//===- ELFAsmParser.cpp - ELF Assembly Parser -----------------------------===// 
-// 
-// 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 
-// 
-//===----------------------------------------------------------------------===// 
- 
-#include "llvm/ADT/StringRef.h" 
-#include "llvm/ADT/StringSwitch.h" 
-#include "llvm/BinaryFormat/ELF.h" 
-#include "llvm/MC/MCAsmInfo.h" 
-#include "llvm/MC/MCContext.h" 
-#include "llvm/MC/MCDirectives.h" 
-#include "llvm/MC/MCExpr.h" 
-#include "llvm/MC/MCParser/MCAsmLexer.h" 
-#include "llvm/MC/MCParser/MCAsmParser.h" 
-#include "llvm/MC/MCParser/MCAsmParserExtension.h" 
-#include "llvm/MC/MCSection.h" 
-#include "llvm/MC/MCSectionELF.h" 
-#include "llvm/MC/MCStreamer.h" 
-#include "llvm/MC/MCSymbol.h" 
-#include "llvm/MC/MCSymbolELF.h" 
-#include "llvm/MC/SectionKind.h" 
-#include "llvm/Support/Casting.h" 
-#include "llvm/Support/MathExtras.h" 
-#include "llvm/Support/SMLoc.h" 
-#include <cassert> 
-#include <cstdint> 
-#include <utility> 
- 
-using namespace llvm; 
- 
-namespace { 
- 
-class ELFAsmParser : public MCAsmParserExtension { 
-  template<bool (ELFAsmParser::*HandlerMethod)(StringRef, SMLoc)> 
-  void addDirectiveHandler(StringRef Directive) { 
-    MCAsmParser::ExtensionDirectiveHandler Handler = std::make_pair( 
-        this, HandleDirective<ELFAsmParser, HandlerMethod>); 
- 
-    getParser().addDirectiveHandler(Directive, Handler); 
-  } 
- 
-  bool ParseSectionSwitch(StringRef Section, unsigned Type, unsigned Flags, 
-                          SectionKind Kind); 
- 
-public: 
-  ELFAsmParser() { BracketExpressionsSupported = true; } 
- 
-  void Initialize(MCAsmParser &Parser) override { 
-    // Call the base implementation. 
-    this->MCAsmParserExtension::Initialize(Parser); 
- 
-    addDirectiveHandler<&ELFAsmParser::ParseSectionDirectiveData>(".data"); 
-    addDirectiveHandler<&ELFAsmParser::ParseSectionDirectiveText>(".text"); 
-    addDirectiveHandler<&ELFAsmParser::ParseSectionDirectiveBSS>(".bss"); 
-    addDirectiveHandler<&ELFAsmParser::ParseSectionDirectiveRoData>(".rodata"); 
-    addDirectiveHandler<&ELFAsmParser::ParseSectionDirectiveTData>(".tdata"); 
-    addDirectiveHandler<&ELFAsmParser::ParseSectionDirectiveTBSS>(".tbss"); 
-    addDirectiveHandler< 
-      &ELFAsmParser::ParseSectionDirectiveDataRel>(".data.rel"); 
-    addDirectiveHandler< 
-      &ELFAsmParser::ParseSectionDirectiveDataRelRo>(".data.rel.ro"); 
-    addDirectiveHandler< 
-      &ELFAsmParser::ParseSectionDirectiveEhFrame>(".eh_frame"); 
-    addDirectiveHandler<&ELFAsmParser::ParseDirectiveSection>(".section"); 
-    addDirectiveHandler< 
-      &ELFAsmParser::ParseDirectivePushSection>(".pushsection"); 
-    addDirectiveHandler<&ELFAsmParser::ParseDirectivePopSection>(".popsection"); 
-    addDirectiveHandler<&ELFAsmParser::ParseDirectiveSize>(".size"); 
-    addDirectiveHandler<&ELFAsmParser::ParseDirectivePrevious>(".previous"); 
-    addDirectiveHandler<&ELFAsmParser::ParseDirectiveType>(".type"); 
-    addDirectiveHandler<&ELFAsmParser::ParseDirectiveIdent>(".ident"); 
-    addDirectiveHandler<&ELFAsmParser::ParseDirectiveSymver>(".symver"); 
-    addDirectiveHandler<&ELFAsmParser::ParseDirectiveVersion>(".version"); 
-    addDirectiveHandler<&ELFAsmParser::ParseDirectiveWeakref>(".weakref"); 
-    addDirectiveHandler<&ELFAsmParser::ParseDirectiveSymbolAttribute>(".weak"); 
-    addDirectiveHandler<&ELFAsmParser::ParseDirectiveSymbolAttribute>(".local"); 
-    addDirectiveHandler< 
-      &ELFAsmParser::ParseDirectiveSymbolAttribute>(".protected"); 
-    addDirectiveHandler< 
-      &ELFAsmParser::ParseDirectiveSymbolAttribute>(".internal"); 
-    addDirectiveHandler< 
-      &ELFAsmParser::ParseDirectiveSymbolAttribute>(".hidden"); 
-    addDirectiveHandler<&ELFAsmParser::ParseDirectiveSubsection>(".subsection"); 
-    addDirectiveHandler<&ELFAsmParser::ParseDirectiveCGProfile>(".cg_profile"); 
-  } 
- 
-  // FIXME: Part of this logic is duplicated in the MCELFStreamer. What is 
-  // the best way for us to get access to it? 
-  bool ParseSectionDirectiveData(StringRef, SMLoc) { 
-    return ParseSectionSwitch(".data", ELF::SHT_PROGBITS, 
-                              ELF::SHF_WRITE | ELF::SHF_ALLOC, 
-                              SectionKind::getData()); 
-  } 
-  bool ParseSectionDirectiveText(StringRef, SMLoc) { 
-    return ParseSectionSwitch(".text", ELF::SHT_PROGBITS, 
-                              ELF::SHF_EXECINSTR | 
-                              ELF::SHF_ALLOC, SectionKind::getText()); 
-  } 
-  bool ParseSectionDirectiveBSS(StringRef, SMLoc) { 
-    return ParseSectionSwitch(".bss", ELF::SHT_NOBITS, 
-                              ELF::SHF_WRITE | 
-                              ELF::SHF_ALLOC, SectionKind::getBSS()); 
-  } 
-  bool ParseSectionDirectiveRoData(StringRef, SMLoc) { 
-    return ParseSectionSwitch(".rodata", ELF::SHT_PROGBITS, 
-                              ELF::SHF_ALLOC, 
-                              SectionKind::getReadOnly()); 
-  } 
-  bool ParseSectionDirectiveTData(StringRef, SMLoc) { 
-    return ParseSectionSwitch(".tdata", ELF::SHT_PROGBITS, 
-                              ELF::SHF_ALLOC | 
-                              ELF::SHF_TLS | ELF::SHF_WRITE, 
-                              SectionKind::getThreadData()); 
-  } 
-  bool ParseSectionDirectiveTBSS(StringRef, SMLoc) { 
-    return ParseSectionSwitch(".tbss", ELF::SHT_NOBITS, 
-                              ELF::SHF_ALLOC | 
-                              ELF::SHF_TLS | ELF::SHF_WRITE, 
-                              SectionKind::getThreadBSS()); 
-  } 
-  bool ParseSectionDirectiveDataRel(StringRef, SMLoc) { 
-    return ParseSectionSwitch(".data.rel", ELF::SHT_PROGBITS, 
-                              ELF::SHF_ALLOC | ELF::SHF_WRITE, 
-                              SectionKind::getData()); 
-  } 
-  bool ParseSectionDirectiveDataRelRo(StringRef, SMLoc) { 
-    return ParseSectionSwitch(".data.rel.ro", ELF::SHT_PROGBITS, 
-                              ELF::SHF_ALLOC | 
-                              ELF::SHF_WRITE, 
-                              SectionKind::getReadOnlyWithRel()); 
-  } 
-  bool ParseSectionDirectiveEhFrame(StringRef, SMLoc) { 
-    return ParseSectionSwitch(".eh_frame", ELF::SHT_PROGBITS, 
-                              ELF::SHF_ALLOC | ELF::SHF_WRITE, 
-                              SectionKind::getData()); 
-  } 
-  bool ParseDirectivePushSection(StringRef, SMLoc); 
-  bool ParseDirectivePopSection(StringRef, SMLoc); 
-  bool ParseDirectiveSection(StringRef, SMLoc); 
-  bool ParseDirectiveSize(StringRef, SMLoc); 
-  bool ParseDirectivePrevious(StringRef, SMLoc); 
-  bool ParseDirectiveType(StringRef, SMLoc); 
-  bool ParseDirectiveIdent(StringRef, SMLoc); 
-  bool ParseDirectiveSymver(StringRef, SMLoc); 
-  bool ParseDirectiveVersion(StringRef, SMLoc); 
-  bool ParseDirectiveWeakref(StringRef, SMLoc); 
-  bool ParseDirectiveSymbolAttribute(StringRef, SMLoc); 
-  bool ParseDirectiveSubsection(StringRef, SMLoc); 
-  bool ParseDirectiveCGProfile(StringRef, SMLoc); 
- 
-private: 
-  bool ParseSectionName(StringRef &SectionName); 
-  bool ParseSectionArguments(bool IsPush, SMLoc loc); 
-  unsigned parseSunStyleSectionFlags(); 
-  bool maybeParseSectionType(StringRef &TypeName); 
-  bool parseMergeSize(int64_t &Size); 
-  bool parseGroup(StringRef &GroupName); 
-  bool parseLinkedToSym(MCSymbolELF *&LinkedToSym); 
-  bool maybeParseUniqueID(int64_t &UniqueID); 
-}; 
- 
-} // end anonymous namespace 
- 
-/// ParseDirectiveSymbolAttribute 
-///  ::= { ".local", ".weak", ... } [ identifier ( , identifier )* ] 
-bool ELFAsmParser::ParseDirectiveSymbolAttribute(StringRef Directive, SMLoc) { 
-  MCSymbolAttr Attr = StringSwitch<MCSymbolAttr>(Directive) 
-    .Case(".weak", MCSA_Weak) 
-    .Case(".local", MCSA_Local) 
-    .Case(".hidden", MCSA_Hidden) 
-    .Case(".internal", MCSA_Internal) 
-    .Case(".protected", MCSA_Protected) 
-    .Default(MCSA_Invalid); 
-  assert(Attr != MCSA_Invalid && "unexpected symbol attribute directive!"); 
-  if (getLexer().isNot(AsmToken::EndOfStatement)) { 
-    while (true) { 
-      StringRef Name; 
- 
-      if (getParser().parseIdentifier(Name)) 
-        return TokError("expected identifier in directive"); 
- 
-      MCSymbol *Sym = getContext().getOrCreateSymbol(Name); 
- 
-      getStreamer().emitSymbolAttribute(Sym, Attr); 
- 
-      if (getLexer().is(AsmToken::EndOfStatement)) 
-        break; 
- 
-      if (getLexer().isNot(AsmToken::Comma)) 
-        return TokError("unexpected token in directive"); 
-      Lex(); 
-    } 
-  } 
- 
-  Lex(); 
-  return false; 
-} 
- 
-bool ELFAsmParser::ParseSectionSwitch(StringRef Section, unsigned Type, 
-                                      unsigned Flags, SectionKind Kind) { 
-  const MCExpr *Subsection = nullptr; 
-  if (getLexer().isNot(AsmToken::EndOfStatement)) { 
-    if (getParser().parseExpression(Subsection)) 
-      return true; 
-  } 
-  Lex(); 
- 
-  getStreamer().SwitchSection(getContext().getELFSection(Section, Type, Flags), 
-                              Subsection); 
- 
-  return false; 
-} 
- 
-bool ELFAsmParser::ParseDirectiveSize(StringRef, SMLoc) { 
-  StringRef Name; 
-  if (getParser().parseIdentifier(Name)) 
-    return TokError("expected identifier in directive"); 
-  MCSymbolELF *Sym = cast<MCSymbolELF>(getContext().getOrCreateSymbol(Name)); 
- 
-  if (getLexer().isNot(AsmToken::Comma)) 
-    return TokError("unexpected token in directive"); 
-  Lex(); 
- 
-  const MCExpr *Expr; 
-  if (getParser().parseExpression(Expr)) 
-    return true; 
- 
-  if (getLexer().isNot(AsmToken::EndOfStatement)) 
-    return TokError("unexpected token in directive"); 
-  Lex(); 
- 
-  getStreamer().emitELFSize(Sym, Expr); 
-  return false; 
-} 
- 
-bool ELFAsmParser::ParseSectionName(StringRef &SectionName) { 
-  // A section name can contain -, so we cannot just use 
-  // parseIdentifier. 
-  SMLoc FirstLoc = getLexer().getLoc(); 
-  unsigned Size = 0; 
- 
-  if (getLexer().is(AsmToken::String)) { 
-    SectionName = getTok().getIdentifier(); 
-    Lex(); 
-    return false; 
-  } 
- 
-  while (!getParser().hasPendingError()) { 
-    SMLoc PrevLoc = getLexer().getLoc(); 
-    if (getLexer().is(AsmToken::Comma) || 
-      getLexer().is(AsmToken::EndOfStatement)) 
-      break; 
- 
-    unsigned CurSize; 
-    if (getLexer().is(AsmToken::String)) { 
-      CurSize = getTok().getIdentifier().size() + 2; 
-      Lex(); 
-    } else if (getLexer().is(AsmToken::Identifier)) { 
-      CurSize = getTok().getIdentifier().size(); 
-      Lex(); 
-    } else { 
-      CurSize = getTok().getString().size(); 
-      Lex(); 
-    } 
-    Size += CurSize; 
-    SectionName = StringRef(FirstLoc.getPointer(), Size); 
- 
-    // Make sure the following token is adjacent. 
-    if (PrevLoc.getPointer() + CurSize != getTok().getLoc().getPointer()) 
-      break; 
-  } 
-  if (Size == 0) 
-    return true; 
- 
-  return false; 
-} 
- 
-static unsigned parseSectionFlags(StringRef flagsStr, bool *UseLastGroup) { 
-  unsigned flags = 0; 
- 
-  // If a valid numerical value is set for the section flag, use it verbatim 
-  if (!flagsStr.getAsInteger(0, flags)) 
-    return flags; 
- 
-  for (char i : flagsStr) { 
-    switch (i) { 
-    case 'a': 
-      flags |= ELF::SHF_ALLOC; 
-      break; 
-    case 'e': 
-      flags |= ELF::SHF_EXCLUDE; 
-      break; 
-    case 'x': 
-      flags |= ELF::SHF_EXECINSTR; 
-      break; 
-    case 'w': 
-      flags |= ELF::SHF_WRITE; 
-      break; 
-    case 'o': 
-      flags |= ELF::SHF_LINK_ORDER; 
-      break; 
-    case 'M': 
-      flags |= ELF::SHF_MERGE; 
-      break; 
-    case 'S': 
-      flags |= ELF::SHF_STRINGS; 
-      break; 
-    case 'T': 
-      flags |= ELF::SHF_TLS; 
-      break; 
-    case 'c': 
-      flags |= ELF::XCORE_SHF_CP_SECTION; 
-      break; 
-    case 'd': 
-      flags |= ELF::XCORE_SHF_DP_SECTION; 
-      break; 
-    case 'y': 
-      flags |= ELF::SHF_ARM_PURECODE; 
-      break; 
-    case 's': 
-      flags |= ELF::SHF_HEX_GPREL; 
-      break; 
-    case 'G': 
-      flags |= ELF::SHF_GROUP; 
-      break; 
-    case '?': 
-      *UseLastGroup = true; 
-      break; 
-    default: 
-      return -1U; 
-    } 
-  } 
- 
-  return flags; 
-} 
- 
-unsigned ELFAsmParser::parseSunStyleSectionFlags() { 
-  unsigned flags = 0; 
-  while (getLexer().is(AsmToken::Hash)) { 
-    Lex(); // Eat the #. 
- 
-    if (!getLexer().is(AsmToken::Identifier)) 
-      return -1U; 
- 
-    StringRef flagId = getTok().getIdentifier(); 
-    if (flagId == "alloc") 
-      flags |= ELF::SHF_ALLOC; 
-    else if (flagId == "execinstr") 
-      flags |= ELF::SHF_EXECINSTR; 
-    else if (flagId == "write") 
-      flags |= ELF::SHF_WRITE; 
-    else if (flagId == "tls") 
-      flags |= ELF::SHF_TLS; 
-    else 
-      return -1U; 
- 
-    Lex(); // Eat the flag. 
- 
-    if (!getLexer().is(AsmToken::Comma)) 
-        break; 
-    Lex(); // Eat the comma. 
-  } 
-  return flags; 
-} 
- 
- 
-bool ELFAsmParser::ParseDirectivePushSection(StringRef s, SMLoc loc) { 
-  getStreamer().PushSection(); 
- 
-  if (ParseSectionArguments(/*IsPush=*/true, loc)) { 
-    getStreamer().PopSection(); 
-    return true; 
-  } 
- 
-  return false; 
-} 
- 
-bool ELFAsmParser::ParseDirectivePopSection(StringRef, SMLoc) { 
-  if (!getStreamer().PopSection()) 
-    return TokError(".popsection without corresponding .pushsection"); 
-  return false; 
-} 
- 
-bool ELFAsmParser::ParseDirectiveSection(StringRef, SMLoc loc) { 
-  return ParseSectionArguments(/*IsPush=*/false, loc); 
-} 
- 
-bool ELFAsmParser::maybeParseSectionType(StringRef &TypeName) { 
-  MCAsmLexer &L = getLexer(); 
-  if (L.isNot(AsmToken::Comma)) 
-    return false; 
-  Lex(); 
-  if (L.isNot(AsmToken::At) && L.isNot(AsmToken::Percent) && 
-      L.isNot(AsmToken::String)) { 
-    if (L.getAllowAtInIdentifier()) 
-      return TokError("expected '@<type>', '%<type>' or \"<type>\""); 
-    else 
-      return TokError("expected '%<type>' or \"<type>\""); 
-  } 
-  if (!L.is(AsmToken::String)) 
-    Lex(); 
-  if (L.is(AsmToken::Integer)) { 
-    TypeName = getTok().getString(); 
-    Lex(); 
-  } else if (getParser().parseIdentifier(TypeName)) 
-    return TokError("expected identifier in directive"); 
-  return false; 
-} 
- 
-bool ELFAsmParser::parseMergeSize(int64_t &Size) { 
-  if (getLexer().isNot(AsmToken::Comma)) 
-    return TokError("expected the entry size"); 
-  Lex(); 
-  if (getParser().parseAbsoluteExpression(Size)) 
-    return true; 
-  if (Size <= 0) 
-    return TokError("entry size must be positive"); 
-  return false; 
-} 
- 
-bool ELFAsmParser::parseGroup(StringRef &GroupName) { 
-  MCAsmLexer &L = getLexer(); 
-  if (L.isNot(AsmToken::Comma)) 
-    return TokError("expected group name"); 
-  Lex(); 
-  if (L.is(AsmToken::Integer)) { 
-    GroupName = getTok().getString(); 
-    Lex(); 
-  } else if (getParser().parseIdentifier(GroupName)) { 
-    return TokError("invalid group name"); 
-  } 
-  if (L.is(AsmToken::Comma)) { 
-    Lex(); 
-    StringRef Linkage; 
-    if (getParser().parseIdentifier(Linkage)) 
-      return TokError("invalid linkage"); 
-    if (Linkage != "comdat") 
-      return TokError("Linkage must be 'comdat'"); 
-  } 
-  return false; 
-} 
- 
-bool ELFAsmParser::parseLinkedToSym(MCSymbolELF *&LinkedToSym) { 
-  MCAsmLexer &L = getLexer(); 
-  if (L.isNot(AsmToken::Comma)) 
-    return TokError("expected linked-to symbol"); 
-  Lex(); 
-  StringRef Name; 
-  SMLoc StartLoc = L.getLoc(); 
+//===- ELFAsmParser.cpp - ELF Assembly Parser -----------------------------===//
+//
+// 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
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/ADT/StringRef.h"
+#include "llvm/ADT/StringSwitch.h"
+#include "llvm/BinaryFormat/ELF.h"
+#include "llvm/MC/MCAsmInfo.h"
+#include "llvm/MC/MCContext.h"
+#include "llvm/MC/MCDirectives.h"
+#include "llvm/MC/MCExpr.h"
+#include "llvm/MC/MCParser/MCAsmLexer.h"
+#include "llvm/MC/MCParser/MCAsmParser.h"
+#include "llvm/MC/MCParser/MCAsmParserExtension.h"
+#include "llvm/MC/MCSection.h"
+#include "llvm/MC/MCSectionELF.h"
+#include "llvm/MC/MCStreamer.h"
+#include "llvm/MC/MCSymbol.h"
+#include "llvm/MC/MCSymbolELF.h"
+#include "llvm/MC/SectionKind.h"
+#include "llvm/Support/Casting.h"
+#include "llvm/Support/MathExtras.h"
+#include "llvm/Support/SMLoc.h"
+#include <cassert>
+#include <cstdint>
+#include <utility>
+
+using namespace llvm;
+
+namespace {
+
+class ELFAsmParser : public MCAsmParserExtension {
+  template<bool (ELFAsmParser::*HandlerMethod)(StringRef, SMLoc)>
+  void addDirectiveHandler(StringRef Directive) {
+    MCAsmParser::ExtensionDirectiveHandler Handler = std::make_pair(
+        this, HandleDirective<ELFAsmParser, HandlerMethod>);
+
+    getParser().addDirectiveHandler(Directive, Handler);
+  }
+
+  bool ParseSectionSwitch(StringRef Section, unsigned Type, unsigned Flags,
+                          SectionKind Kind);
+
+public:
+  ELFAsmParser() { BracketExpressionsSupported = true; }
+
+  void Initialize(MCAsmParser &Parser) override {
+    // Call the base implementation.
+    this->MCAsmParserExtension::Initialize(Parser);
+
+    addDirectiveHandler<&ELFAsmParser::ParseSectionDirectiveData>(".data");
+    addDirectiveHandler<&ELFAsmParser::ParseSectionDirectiveText>(".text");
+    addDirectiveHandler<&ELFAsmParser::ParseSectionDirectiveBSS>(".bss");
+    addDirectiveHandler<&ELFAsmParser::ParseSectionDirectiveRoData>(".rodata");
+    addDirectiveHandler<&ELFAsmParser::ParseSectionDirectiveTData>(".tdata");
+    addDirectiveHandler<&ELFAsmParser::ParseSectionDirectiveTBSS>(".tbss");
+    addDirectiveHandler<
+      &ELFAsmParser::ParseSectionDirectiveDataRel>(".data.rel");
+    addDirectiveHandler<
+      &ELFAsmParser::ParseSectionDirectiveDataRelRo>(".data.rel.ro");
+    addDirectiveHandler<
+      &ELFAsmParser::ParseSectionDirectiveEhFrame>(".eh_frame");
+    addDirectiveHandler<&ELFAsmParser::ParseDirectiveSection>(".section");
+    addDirectiveHandler<
+      &ELFAsmParser::ParseDirectivePushSection>(".pushsection");
+    addDirectiveHandler<&ELFAsmParser::ParseDirectivePopSection>(".popsection");
+    addDirectiveHandler<&ELFAsmParser::ParseDirectiveSize>(".size");
+    addDirectiveHandler<&ELFAsmParser::ParseDirectivePrevious>(".previous");
+    addDirectiveHandler<&ELFAsmParser::ParseDirectiveType>(".type");
+    addDirectiveHandler<&ELFAsmParser::ParseDirectiveIdent>(".ident");
+    addDirectiveHandler<&ELFAsmParser::ParseDirectiveSymver>(".symver");
+    addDirectiveHandler<&ELFAsmParser::ParseDirectiveVersion>(".version");
+    addDirectiveHandler<&ELFAsmParser::ParseDirectiveWeakref>(".weakref");
+    addDirectiveHandler<&ELFAsmParser::ParseDirectiveSymbolAttribute>(".weak");
+    addDirectiveHandler<&ELFAsmParser::ParseDirectiveSymbolAttribute>(".local");
+    addDirectiveHandler<
+      &ELFAsmParser::ParseDirectiveSymbolAttribute>(".protected");
+    addDirectiveHandler<
+      &ELFAsmParser::ParseDirectiveSymbolAttribute>(".internal");
+    addDirectiveHandler<
+      &ELFAsmParser::ParseDirectiveSymbolAttribute>(".hidden");
+    addDirectiveHandler<&ELFAsmParser::ParseDirectiveSubsection>(".subsection");
+    addDirectiveHandler<&ELFAsmParser::ParseDirectiveCGProfile>(".cg_profile");
+  }
+
+  // FIXME: Part of this logic is duplicated in the MCELFStreamer. What is
+  // the best way for us to get access to it?
+  bool ParseSectionDirectiveData(StringRef, SMLoc) {
+    return ParseSectionSwitch(".data", ELF::SHT_PROGBITS,
+                              ELF::SHF_WRITE | ELF::SHF_ALLOC,
+                              SectionKind::getData());
+  }
+  bool ParseSectionDirectiveText(StringRef, SMLoc) {
+    return ParseSectionSwitch(".text", ELF::SHT_PROGBITS,
+                              ELF::SHF_EXECINSTR |
+                              ELF::SHF_ALLOC, SectionKind::getText());
+  }
+  bool ParseSectionDirectiveBSS(StringRef, SMLoc) {
+    return ParseSectionSwitch(".bss", ELF::SHT_NOBITS,
+                              ELF::SHF_WRITE |
+                              ELF::SHF_ALLOC, SectionKind::getBSS());
+  }
+  bool ParseSectionDirectiveRoData(StringRef, SMLoc) {
+    return ParseSectionSwitch(".rodata", ELF::SHT_PROGBITS,
+                              ELF::SHF_ALLOC,
+                              SectionKind::getReadOnly());
+  }
+  bool ParseSectionDirectiveTData(StringRef, SMLoc) {
+    return ParseSectionSwitch(".tdata", ELF::SHT_PROGBITS,
+                              ELF::SHF_ALLOC |
+                              ELF::SHF_TLS | ELF::SHF_WRITE,
+                              SectionKind::getThreadData());
+  }
+  bool ParseSectionDirectiveTBSS(StringRef, SMLoc) {
+    return ParseSectionSwitch(".tbss", ELF::SHT_NOBITS,
+                              ELF::SHF_ALLOC |
+                              ELF::SHF_TLS | ELF::SHF_WRITE,
+                              SectionKind::getThreadBSS());
+  }
+  bool ParseSectionDirectiveDataRel(StringRef, SMLoc) {
+    return ParseSectionSwitch(".data.rel", ELF::SHT_PROGBITS,
+                              ELF::SHF_ALLOC | ELF::SHF_WRITE,
+                              SectionKind::getData());
+  }
+  bool ParseSectionDirectiveDataRelRo(StringRef, SMLoc) {
+    return ParseSectionSwitch(".data.rel.ro", ELF::SHT_PROGBITS,
+                              ELF::SHF_ALLOC |
+                              ELF::SHF_WRITE,
+                              SectionKind::getReadOnlyWithRel());
+  }
+  bool ParseSectionDirectiveEhFrame(StringRef, SMLoc) {
+    return ParseSectionSwitch(".eh_frame", ELF::SHT_PROGBITS,
+                              ELF::SHF_ALLOC | ELF::SHF_WRITE,
+                              SectionKind::getData());
+  }
+  bool ParseDirectivePushSection(StringRef, SMLoc);
+  bool ParseDirectivePopSection(StringRef, SMLoc);
+  bool ParseDirectiveSection(StringRef, SMLoc);
+  bool ParseDirectiveSize(StringRef, SMLoc);
+  bool ParseDirectivePrevious(StringRef, SMLoc);
+  bool ParseDirectiveType(StringRef, SMLoc);
+  bool ParseDirectiveIdent(StringRef, SMLoc);
+  bool ParseDirectiveSymver(StringRef, SMLoc);
+  bool ParseDirectiveVersion(StringRef, SMLoc);
+  bool ParseDirectiveWeakref(StringRef, SMLoc);
+  bool ParseDirectiveSymbolAttribute(StringRef, SMLoc);
+  bool ParseDirectiveSubsection(StringRef, SMLoc);
+  bool ParseDirectiveCGProfile(StringRef, SMLoc);
+
+private:
+  bool ParseSectionName(StringRef &SectionName);
+  bool ParseSectionArguments(bool IsPush, SMLoc loc);
+  unsigned parseSunStyleSectionFlags();
+  bool maybeParseSectionType(StringRef &TypeName);
+  bool parseMergeSize(int64_t &Size);
+  bool parseGroup(StringRef &GroupName);
+  bool parseLinkedToSym(MCSymbolELF *&LinkedToSym);
+  bool maybeParseUniqueID(int64_t &UniqueID);
+};
+
+} // end anonymous namespace
+
+/// ParseDirectiveSymbolAttribute
+///  ::= { ".local", ".weak", ... } [ identifier ( , identifier )* ]
+bool ELFAsmParser::ParseDirectiveSymbolAttribute(StringRef Directive, SMLoc) {
+  MCSymbolAttr Attr = StringSwitch<MCSymbolAttr>(Directive)
+    .Case(".weak", MCSA_Weak)
+    .Case(".local", MCSA_Local)
+    .Case(".hidden", MCSA_Hidden)
+    .Case(".internal", MCSA_Internal)
+    .Case(".protected", MCSA_Protected)
+    .Default(MCSA_Invalid);
+  assert(Attr != MCSA_Invalid && "unexpected symbol attribute directive!");
+  if (getLexer().isNot(AsmToken::EndOfStatement)) {
+    while (true) {
+      StringRef Name;
+
+      if (getParser().parseIdentifier(Name))
+        return TokError("expected identifier in directive");
+
+      MCSymbol *Sym = getContext().getOrCreateSymbol(Name);
+
+      getStreamer().emitSymbolAttribute(Sym, Attr);
+
+      if (getLexer().is(AsmToken::EndOfStatement))
+        break;
+
+      if (getLexer().isNot(AsmToken::Comma))
+        return TokError("unexpected token in directive");
+      Lex();
+    }
+  }
+
+  Lex();
+  return false;
+}
+
+bool ELFAsmParser::ParseSectionSwitch(StringRef Section, unsigned Type,
+                                      unsigned Flags, SectionKind Kind) {
+  const MCExpr *Subsection = nullptr;
+  if (getLexer().isNot(AsmToken::EndOfStatement)) {
+    if (getParser().parseExpression(Subsection))
+      return true;
+  }
+  Lex();
+
+  getStreamer().SwitchSection(getContext().getELFSection(Section, Type, Flags),
+                              Subsection);
+
+  return false;
+}
+
+bool ELFAsmParser::ParseDirectiveSize(StringRef, SMLoc) {
+  StringRef Name;
+  if (getParser().parseIdentifier(Name))
+    return TokError("expected identifier in directive");
+  MCSymbolELF *Sym = cast<MCSymbolELF>(getContext().getOrCreateSymbol(Name));
+
+  if (getLexer().isNot(AsmToken::Comma))
+    return TokError("unexpected token in directive");
+  Lex();
+
+  const MCExpr *Expr;
+  if (getParser().parseExpression(Expr))
+    return true;
+
+  if (getLexer().isNot(AsmToken::EndOfStatement))
+    return TokError("unexpected token in directive");
+  Lex();
+
+  getStreamer().emitELFSize(Sym, Expr);
+  return false;
+}
+
+bool ELFAsmParser::ParseSectionName(StringRef &SectionName) {
+  // A section name can contain -, so we cannot just use
+  // parseIdentifier.
+  SMLoc FirstLoc = getLexer().getLoc();
+  unsigned Size = 0;
+
+  if (getLexer().is(AsmToken::String)) {
+    SectionName = getTok().getIdentifier();
+    Lex();
+    return false;
+  }
+
+  while (!getParser().hasPendingError()) {
+    SMLoc PrevLoc = getLexer().getLoc();
+    if (getLexer().is(AsmToken::Comma) ||
+      getLexer().is(AsmToken::EndOfStatement))
+      break;
+
+    unsigned CurSize;
+    if (getLexer().is(AsmToken::String)) {
+      CurSize = getTok().getIdentifier().size() + 2;
+      Lex();
+    } else if (getLexer().is(AsmToken::Identifier)) {
+      CurSize = getTok().getIdentifier().size();
+      Lex();
+    } else {
+      CurSize = getTok().getString().size();
+      Lex();
+    }
+    Size += CurSize;
+    SectionName = StringRef(FirstLoc.getPointer(), Size);
+
+    // Make sure the following token is adjacent.
+    if (PrevLoc.getPointer() + CurSize != getTok().getLoc().getPointer())
+      break;
+  }
+  if (Size == 0)
+    return true;
+
+  return false;
+}
+
+static unsigned parseSectionFlags(StringRef flagsStr, bool *UseLastGroup) {
+  unsigned flags = 0;
+
+  // If a valid numerical value is set for the section flag, use it verbatim
+  if (!flagsStr.getAsInteger(0, flags))
+    return flags;
+
+  for (char i : flagsStr) {
+    switch (i) {
+    case 'a':
+      flags |= ELF::SHF_ALLOC;
+      break;
+    case 'e':
+      flags |= ELF::SHF_EXCLUDE;
+      break;
+    case 'x':
+      flags |= ELF::SHF_EXECINSTR;
+      break;
+    case 'w':
+      flags |= ELF::SHF_WRITE;
+      break;
+    case 'o':
+      flags |= ELF::SHF_LINK_ORDER;
+      break;
+    case 'M':
+      flags |= ELF::SHF_MERGE;
+      break;
+    case 'S':
+      flags |= ELF::SHF_STRINGS;
+      break;
+    case 'T':
+      flags |= ELF::SHF_TLS;
+      break;
+    case 'c':
+      flags |= ELF::XCORE_SHF_CP_SECTION;
+      break;
+    case 'd':
+      flags |= ELF::XCORE_SHF_DP_SECTION;
+      break;
+    case 'y':
+      flags |= ELF::SHF_ARM_PURECODE;
+      break;
+    case 's':
+      flags |= ELF::SHF_HEX_GPREL;
+      break;
+    case 'G':
+      flags |= ELF::SHF_GROUP;
+      break;
+    case '?':
+      *UseLastGroup = true;
+      break;
+    default:
+      return -1U;
+    }
+  }
+
+  return flags;
+}
+
+unsigned ELFAsmParser::parseSunStyleSectionFlags() {
+  unsigned flags = 0;
+  while (getLexer().is(AsmToken::Hash)) {
+    Lex(); // Eat the #.
+
+    if (!getLexer().is(AsmToken::Identifier))
+      return -1U;
+
+    StringRef flagId = getTok().getIdentifier();
+    if (flagId == "alloc")
+      flags |= ELF::SHF_ALLOC;
+    else if (flagId == "execinstr")
+      flags |= ELF::SHF_EXECINSTR;
+    else if (flagId == "write")
+      flags |= ELF::SHF_WRITE;
+    else if (flagId == "tls")
+      flags |= ELF::SHF_TLS;
+    else
+      return -1U;
+
+    Lex(); // Eat the flag.
+
+    if (!getLexer().is(AsmToken::Comma))
+        break;
+    Lex(); // Eat the comma.
+  }
+  return flags;
+}
+
+
+bool ELFAsmParser::ParseDirectivePushSection(StringRef s, SMLoc loc) {
+  getStreamer().PushSection();
+
+  if (ParseSectionArguments(/*IsPush=*/true, loc)) {
+    getStreamer().PopSection();
+    return true;
+  }
+
+  return false;
+}
+
+bool ELFAsmParser::ParseDirectivePopSection(StringRef, SMLoc) {
+  if (!getStreamer().PopSection())
+    return TokError(".popsection without corresponding .pushsection");
+  return false;
+}
+
+bool ELFAsmParser::ParseDirectiveSection(StringRef, SMLoc loc) {
+  return ParseSectionArguments(/*IsPush=*/false, loc);
+}
+
+bool ELFAsmParser::maybeParseSectionType(StringRef &TypeName) {
+  MCAsmLexer &L = getLexer();
+  if (L.isNot(AsmToken::Comma))
+    return false;
+  Lex();
+  if (L.isNot(AsmToken::At) && L.isNot(AsmToken::Percent) &&
+      L.isNot(AsmToken::String)) {
+    if (L.getAllowAtInIdentifier())
+      return TokError("expected '@<type>', '%<type>' or \"<type>\"");
+    else
+      return TokError("expected '%<type>' or \"<type>\"");
+  }
+  if (!L.is(AsmToken::String))
+    Lex();
+  if (L.is(AsmToken::Integer)) {
+    TypeName = getTok().getString();
+    Lex();
+  } else if (getParser().parseIdentifier(TypeName))
+    return TokError("expected identifier in directive");
+  return false;
+}
+
+bool ELFAsmParser::parseMergeSize(int64_t &Size) {
+  if (getLexer().isNot(AsmToken::Comma))
+    return TokError("expected the entry size");
+  Lex();
+  if (getParser().parseAbsoluteExpression(Size))
+    return true;
+  if (Size <= 0)
+    return TokError("entry size must be positive");
+  return false;
+}
+
+bool ELFAsmParser::parseGroup(StringRef &GroupName) {
+  MCAsmLexer &L = getLexer();
+  if (L.isNot(AsmToken::Comma))
+    return TokError("expected group name");
+  Lex();
+  if (L.is(AsmToken::Integer)) {
+    GroupName = getTok().getString();
+    Lex();
+  } else if (getParser().parseIdentifier(GroupName)) {
+    return TokError("invalid group name");
+  }
+  if (L.is(AsmToken::Comma)) {
+    Lex();
+    StringRef Linkage;
+    if (getParser().parseIdentifier(Linkage))
+      return TokError("invalid linkage");
+    if (Linkage != "comdat")
+      return TokError("Linkage must be 'comdat'");
+  }
+  return false;
+}
+
+bool ELFAsmParser::parseLinkedToSym(MCSymbolELF *&LinkedToSym) {
+  MCAsmLexer &L = getLexer();
+  if (L.isNot(AsmToken::Comma))
+    return TokError("expected linked-to symbol");
+  Lex();
+  StringRef Name;
+  SMLoc StartLoc = L.getLoc();
   if (getParser().parseIdentifier(Name)) {
     if (getParser().getTok().getString() == "0") {
       getParser().Lex();
       LinkedToSym = nullptr;
       return false;
     }
-    return TokError("invalid linked-to symbol"); 
+    return TokError("invalid linked-to symbol");
   }
-  LinkedToSym = dyn_cast_or_null<MCSymbolELF>(getContext().lookupSymbol(Name)); 
-  if (!LinkedToSym || !LinkedToSym->isInSection()) 
-    return Error(StartLoc, "linked-to symbol is not in a section: " + Name); 
-  return false; 
-} 
- 
-bool ELFAsmParser::maybeParseUniqueID(int64_t &UniqueID) { 
-  MCAsmLexer &L = getLexer(); 
-  if (L.isNot(AsmToken::Comma)) 
-    return false; 
-  Lex(); 
-  StringRef UniqueStr; 
-  if (getParser().parseIdentifier(UniqueStr)) 
-    return TokError("expected identifier in directive"); 
-  if (UniqueStr != "unique") 
-    return TokError("expected 'unique'"); 
-  if (L.isNot(AsmToken::Comma)) 
-    return TokError("expected commma"); 
-  Lex(); 
-  if (getParser().parseAbsoluteExpression(UniqueID)) 
-    return true; 
-  if (UniqueID < 0) 
-    return TokError("unique id must be positive"); 
-  if (!isUInt<32>(UniqueID) || UniqueID == ~0U) 
-    return TokError("unique id is too large"); 
-  return false; 
-} 
- 
-static bool hasPrefix(StringRef SectionName, StringRef Prefix) { 
-  return SectionName.startswith(Prefix) || SectionName == Prefix.drop_back(); 
-} 
- 
-bool ELFAsmParser::ParseSectionArguments(bool IsPush, SMLoc loc) { 
-  StringRef SectionName; 
- 
-  if (ParseSectionName(SectionName)) 
-    return TokError("expected identifier in directive"); 
- 
-  StringRef TypeName; 
-  int64_t Size = 0; 
-  StringRef GroupName; 
-  unsigned Flags = 0; 
-  const MCExpr *Subsection = nullptr; 
-  bool UseLastGroup = false; 
-  MCSymbolELF *LinkedToSym = nullptr; 
-  int64_t UniqueID = ~0; 
- 
-  // Set the defaults first. 
-  if (hasPrefix(SectionName, ".rodata.") || SectionName == ".rodata1") 
-    Flags |= ELF::SHF_ALLOC; 
-  else if (SectionName == ".fini" || SectionName == ".init" || 
-           hasPrefix(SectionName, ".text.")) 
-    Flags |= ELF::SHF_ALLOC | ELF::SHF_EXECINSTR; 
-  else if (hasPrefix(SectionName, ".data.") || SectionName == ".data1" || 
-           hasPrefix(SectionName, ".bss.") || 
-           hasPrefix(SectionName, ".init_array.") || 
-           hasPrefix(SectionName, ".fini_array.") || 
-           hasPrefix(SectionName, ".preinit_array.")) 
-    Flags |= ELF::SHF_ALLOC | ELF::SHF_WRITE; 
-  else if (hasPrefix(SectionName, ".tdata.") || 
-           hasPrefix(SectionName, ".tbss.")) 
-    Flags |= ELF::SHF_ALLOC | ELF::SHF_WRITE | ELF::SHF_TLS; 
- 
-  if (getLexer().is(AsmToken::Comma)) { 
-    Lex(); 
- 
-    if (IsPush && getLexer().isNot(AsmToken::String)) { 
-      if (getParser().parseExpression(Subsection)) 
-        return true; 
-      if (getLexer().isNot(AsmToken::Comma)) 
-        goto EndStmt; 
-      Lex(); 
-    } 
- 
-    unsigned extraFlags; 
- 
-    if (getLexer().isNot(AsmToken::String)) { 
-      if (!getContext().getAsmInfo()->usesSunStyleELFSectionSwitchSyntax() 
-          || getLexer().isNot(AsmToken::Hash)) 
-        return TokError("expected string in directive"); 
-      extraFlags = parseSunStyleSectionFlags(); 
-    } else { 
-      StringRef FlagsStr = getTok().getStringContents(); 
-      Lex(); 
-      extraFlags = parseSectionFlags(FlagsStr, &UseLastGroup); 
-    } 
- 
-    if (extraFlags == -1U) 
-      return TokError("unknown flag"); 
-    Flags |= extraFlags; 
- 
-    bool Mergeable = Flags & ELF::SHF_MERGE; 
-    bool Group = Flags & ELF::SHF_GROUP; 
-    if (Group && UseLastGroup) 
-      return TokError("Section cannot specifiy a group name while also acting " 
-                      "as a member of the last group"); 
- 
-    if (maybeParseSectionType(TypeName)) 
-      return true; 
- 
-    MCAsmLexer &L = getLexer(); 
-    if (TypeName.empty()) { 
-      if (Mergeable) 
-        return TokError("Mergeable section must specify the type"); 
-      if (Group) 
-        return TokError("Group section must specify the type"); 
-      if (L.isNot(AsmToken::EndOfStatement)) 
-        return TokError("unexpected token in directive"); 
-    } 
- 
-    if (Mergeable) 
-      if (parseMergeSize(Size)) 
-        return true; 
-    if (Group) 
-      if (parseGroup(GroupName)) 
-        return true; 
-    if (Flags & ELF::SHF_LINK_ORDER) 
-      if (parseLinkedToSym(LinkedToSym)) 
-        return true; 
-    if (maybeParseUniqueID(UniqueID)) 
-      return true; 
-  } 
- 
-EndStmt: 
-  if (getLexer().isNot(AsmToken::EndOfStatement)) 
-    return TokError("unexpected token in directive"); 
-  Lex(); 
- 
-  unsigned Type = ELF::SHT_PROGBITS; 
- 
-  if (TypeName.empty()) { 
-    if (SectionName.startswith(".note")) 
-      Type = ELF::SHT_NOTE; 
-    else if (hasPrefix(SectionName, ".init_array.")) 
-      Type = ELF::SHT_INIT_ARRAY; 
-    else if (hasPrefix(SectionName, ".bss.")) 
-      Type = ELF::SHT_NOBITS; 
-    else if (hasPrefix(SectionName, ".tbss.")) 
-      Type = ELF::SHT_NOBITS; 
-    else if (hasPrefix(SectionName, ".fini_array.")) 
-      Type = ELF::SHT_FINI_ARRAY; 
-    else if (hasPrefix(SectionName, ".preinit_array.")) 
-      Type = ELF::SHT_PREINIT_ARRAY; 
-  } else { 
-    if (TypeName == "init_array") 
-      Type = ELF::SHT_INIT_ARRAY; 
-    else if (TypeName == "fini_array") 
-      Type = ELF::SHT_FINI_ARRAY; 
-    else if (TypeName == "preinit_array") 
-      Type = ELF::SHT_PREINIT_ARRAY; 
-    else if (TypeName == "nobits") 
-      Type = ELF::SHT_NOBITS; 
-    else if (TypeName == "progbits") 
-      Type = ELF::SHT_PROGBITS; 
-    else if (TypeName == "note") 
-      Type = ELF::SHT_NOTE; 
-    else if (TypeName == "unwind") 
-      Type = ELF::SHT_X86_64_UNWIND; 
-    else if (TypeName == "llvm_odrtab") 
-      Type = ELF::SHT_LLVM_ODRTAB; 
-    else if (TypeName == "llvm_linker_options") 
-      Type = ELF::SHT_LLVM_LINKER_OPTIONS; 
-    else if (TypeName == "llvm_call_graph_profile") 
-      Type = ELF::SHT_LLVM_CALL_GRAPH_PROFILE; 
-    else if (TypeName == "llvm_dependent_libraries") 
-      Type = ELF::SHT_LLVM_DEPENDENT_LIBRARIES; 
-    else if (TypeName == "llvm_sympart") 
-      Type = ELF::SHT_LLVM_SYMPART; 
+  LinkedToSym = dyn_cast_or_null<MCSymbolELF>(getContext().lookupSymbol(Name));
+  if (!LinkedToSym || !LinkedToSym->isInSection())
+    return Error(StartLoc, "linked-to symbol is not in a section: " + Name);
+  return false;
+}
+
+bool ELFAsmParser::maybeParseUniqueID(int64_t &UniqueID) {
+  MCAsmLexer &L = getLexer();
+  if (L.isNot(AsmToken::Comma))
+    return false;
+  Lex();
+  StringRef UniqueStr;
+  if (getParser().parseIdentifier(UniqueStr))
+    return TokError("expected identifier in directive");
+  if (UniqueStr != "unique")
+    return TokError("expected 'unique'");
+  if (L.isNot(AsmToken::Comma))
+    return TokError("expected commma");
+  Lex();
+  if (getParser().parseAbsoluteExpression(UniqueID))
+    return true;
+  if (UniqueID < 0)
+    return TokError("unique id must be positive");
+  if (!isUInt<32>(UniqueID) || UniqueID == ~0U)
+    return TokError("unique id is too large");
+  return false;
+}
+
+static bool hasPrefix(StringRef SectionName, StringRef Prefix) {
+  return SectionName.startswith(Prefix) || SectionName == Prefix.drop_back();
+}
+
+bool ELFAsmParser::ParseSectionArguments(bool IsPush, SMLoc loc) {
+  StringRef SectionName;
+
+  if (ParseSectionName(SectionName))
+    return TokError("expected identifier in directive");
+
+  StringRef TypeName;
+  int64_t Size = 0;
+  StringRef GroupName;
+  unsigned Flags = 0;
+  const MCExpr *Subsection = nullptr;
+  bool UseLastGroup = false;
+  MCSymbolELF *LinkedToSym = nullptr;
+  int64_t UniqueID = ~0;
+
+  // Set the defaults first.
+  if (hasPrefix(SectionName, ".rodata.") || SectionName == ".rodata1")
+    Flags |= ELF::SHF_ALLOC;
+  else if (SectionName == ".fini" || SectionName == ".init" ||
+           hasPrefix(SectionName, ".text."))
+    Flags |= ELF::SHF_ALLOC | ELF::SHF_EXECINSTR;
+  else if (hasPrefix(SectionName, ".data.") || SectionName == ".data1" ||
+           hasPrefix(SectionName, ".bss.") ||
+           hasPrefix(SectionName, ".init_array.") ||
+           hasPrefix(SectionName, ".fini_array.") ||
+           hasPrefix(SectionName, ".preinit_array."))
+    Flags |= ELF::SHF_ALLOC | ELF::SHF_WRITE;
+  else if (hasPrefix(SectionName, ".tdata.") ||
+           hasPrefix(SectionName, ".tbss."))
+    Flags |= ELF::SHF_ALLOC | ELF::SHF_WRITE | ELF::SHF_TLS;
+
+  if (getLexer().is(AsmToken::Comma)) {
+    Lex();
+
+    if (IsPush && getLexer().isNot(AsmToken::String)) {
+      if (getParser().parseExpression(Subsection))
+        return true;
+      if (getLexer().isNot(AsmToken::Comma))
+        goto EndStmt;
+      Lex();
+    }
+
+    unsigned extraFlags;
+
+    if (getLexer().isNot(AsmToken::String)) {
+      if (!getContext().getAsmInfo()->usesSunStyleELFSectionSwitchSyntax()
+          || getLexer().isNot(AsmToken::Hash))
+        return TokError("expected string in directive");
+      extraFlags = parseSunStyleSectionFlags();
+    } else {
+      StringRef FlagsStr = getTok().getStringContents();
+      Lex();
+      extraFlags = parseSectionFlags(FlagsStr, &UseLastGroup);
+    }
+
+    if (extraFlags == -1U)
+      return TokError("unknown flag");
+    Flags |= extraFlags;
+
+    bool Mergeable = Flags & ELF::SHF_MERGE;
+    bool Group = Flags & ELF::SHF_GROUP;
+    if (Group && UseLastGroup)
+      return TokError("Section cannot specifiy a group name while also acting "
+                      "as a member of the last group");
+
+    if (maybeParseSectionType(TypeName))
+      return true;
+
+    MCAsmLexer &L = getLexer();
+    if (TypeName.empty()) {
+      if (Mergeable)
+        return TokError("Mergeable section must specify the type");
+      if (Group)
+        return TokError("Group section must specify the type");
+      if (L.isNot(AsmToken::EndOfStatement))
+        return TokError("unexpected token in directive");
+    }
+
+    if (Mergeable)
+      if (parseMergeSize(Size))
+        return true;
+    if (Group)
+      if (parseGroup(GroupName))
+        return true;
+    if (Flags & ELF::SHF_LINK_ORDER)
+      if (parseLinkedToSym(LinkedToSym))
+        return true;
+    if (maybeParseUniqueID(UniqueID))
+      return true;
+  }
+
+EndStmt:
+  if (getLexer().isNot(AsmToken::EndOfStatement))
+    return TokError("unexpected token in directive");
+  Lex();
+
+  unsigned Type = ELF::SHT_PROGBITS;
+
+  if (TypeName.empty()) {
+    if (SectionName.startswith(".note"))
+      Type = ELF::SHT_NOTE;
+    else if (hasPrefix(SectionName, ".init_array."))
+      Type = ELF::SHT_INIT_ARRAY;
+    else if (hasPrefix(SectionName, ".bss."))
+      Type = ELF::SHT_NOBITS;
+    else if (hasPrefix(SectionName, ".tbss."))
+      Type = ELF::SHT_NOBITS;
+    else if (hasPrefix(SectionName, ".fini_array."))
+      Type = ELF::SHT_FINI_ARRAY;
+    else if (hasPrefix(SectionName, ".preinit_array."))
+      Type = ELF::SHT_PREINIT_ARRAY;
+  } else {
+    if (TypeName == "init_array")
+      Type = ELF::SHT_INIT_ARRAY;
+    else if (TypeName == "fini_array")
+      Type = ELF::SHT_FINI_ARRAY;
+    else if (TypeName == "preinit_array")
+      Type = ELF::SHT_PREINIT_ARRAY;
+    else if (TypeName == "nobits")
+      Type = ELF::SHT_NOBITS;
+    else if (TypeName == "progbits")
+      Type = ELF::SHT_PROGBITS;
+    else if (TypeName == "note")
+      Type = ELF::SHT_NOTE;
+    else if (TypeName == "unwind")
+      Type = ELF::SHT_X86_64_UNWIND;
+    else if (TypeName == "llvm_odrtab")
+      Type = ELF::SHT_LLVM_ODRTAB;
+    else if (TypeName == "llvm_linker_options")
+      Type = ELF::SHT_LLVM_LINKER_OPTIONS;
+    else if (TypeName == "llvm_call_graph_profile")
+      Type = ELF::SHT_LLVM_CALL_GRAPH_PROFILE;
+    else if (TypeName == "llvm_dependent_libraries")
+      Type = ELF::SHT_LLVM_DEPENDENT_LIBRARIES;
+    else if (TypeName == "llvm_sympart")
+      Type = ELF::SHT_LLVM_SYMPART;
     else if (TypeName == "llvm_bb_addr_map")
       Type = ELF::SHT_LLVM_BB_ADDR_MAP;
-    else if (TypeName.getAsInteger(0, Type)) 
-      return TokError("unknown section type"); 
-  } 
- 
-  if (UseLastGroup) { 
-    MCSectionSubPair CurrentSection = getStreamer().getCurrentSection(); 
-    if (const MCSectionELF *Section = 
-            cast_or_null<MCSectionELF>(CurrentSection.first)) 
-      if (const MCSymbol *Group = Section->getGroup()) { 
-        GroupName = Group->getName(); 
-        Flags |= ELF::SHF_GROUP; 
-      } 
-  } 
- 
-  MCSectionELF *Section = getContext().getELFSection( 
-      SectionName, Type, Flags, Size, GroupName, UniqueID, LinkedToSym); 
-  getStreamer().SwitchSection(Section, Subsection); 
-  // x86-64 psABI names SHT_X86_64_UNWIND as the canonical type for .eh_frame, 
-  // but GNU as emits SHT_PROGBITS .eh_frame for .cfi_* directives. Don't error 
-  // for SHT_PROGBITS .eh_frame 
-  if (Section->getType() != Type && 
-      !(SectionName == ".eh_frame" && Type == ELF::SHT_PROGBITS)) 
-    Error(loc, "changed section type for " + SectionName + ", expected: 0x" + 
-                   utohexstr(Section->getType())); 
-  // Check that flags are used consistently. However, the GNU assembler permits 
-  // to leave out in subsequent uses of the same sections; for compatibility, 
-  // do likewise. 
-  if ((Flags || Size || !TypeName.empty()) && Section->getFlags() != Flags) 
-    Error(loc, "changed section flags for " + SectionName + ", expected: 0x" + 
-                   utohexstr(Section->getFlags())); 
-  if ((Flags || Size || !TypeName.empty()) && Section->getEntrySize() != Size) 
-    Error(loc, "changed section entsize for " + SectionName + 
-                   ", expected: " + Twine(Section->getEntrySize())); 
- 
+    else if (TypeName.getAsInteger(0, Type))
+      return TokError("unknown section type");
+  }
+
+  if (UseLastGroup) {
+    MCSectionSubPair CurrentSection = getStreamer().getCurrentSection();
+    if (const MCSectionELF *Section =
+            cast_or_null<MCSectionELF>(CurrentSection.first))
+      if (const MCSymbol *Group = Section->getGroup()) {
+        GroupName = Group->getName();
+        Flags |= ELF::SHF_GROUP;
+      }
+  }
+
+  MCSectionELF *Section = getContext().getELFSection(
+      SectionName, Type, Flags, Size, GroupName, UniqueID, LinkedToSym);
+  getStreamer().SwitchSection(Section, Subsection);
+  // x86-64 psABI names SHT_X86_64_UNWIND as the canonical type for .eh_frame,
+  // but GNU as emits SHT_PROGBITS .eh_frame for .cfi_* directives. Don't error
+  // for SHT_PROGBITS .eh_frame
+  if (Section->getType() != Type &&
+      !(SectionName == ".eh_frame" && Type == ELF::SHT_PROGBITS))
+    Error(loc, "changed section type for " + SectionName + ", expected: 0x" +
+                   utohexstr(Section->getType()));
+  // Check that flags are used consistently. However, the GNU assembler permits
+  // to leave out in subsequent uses of the same sections; for compatibility,
+  // do likewise.
+  if ((Flags || Size || !TypeName.empty()) && Section->getFlags() != Flags)
+    Error(loc, "changed section flags for " + SectionName + ", expected: 0x" +
+                   utohexstr(Section->getFlags()));
+  if ((Flags || Size || !TypeName.empty()) && Section->getEntrySize() != Size)
+    Error(loc, "changed section entsize for " + SectionName +
+                   ", expected: " + Twine(Section->getEntrySize()));
+
   if (getContext().getGenDwarfForAssembly() &&
       (Section->getFlags() & ELF::SHF_ALLOC) &&
       (Section->getFlags() & ELF::SHF_EXECINSTR)) {
-    bool InsertResult = getContext().addGenDwarfSection(Section); 
-    if (InsertResult) { 
-      if (getContext().getDwarfVersion() <= 2) 
-        Warning(loc, "DWARF2 only supports one section per compilation unit"); 
- 
-      if (!Section->getBeginSymbol()) { 
-        MCSymbol *SectionStartSymbol = getContext().createTempSymbol(); 
-        getStreamer().emitLabel(SectionStartSymbol); 
-        Section->setBeginSymbol(SectionStartSymbol); 
-      } 
-    } 
-  } 
- 
-  return false; 
-} 
- 
-bool ELFAsmParser::ParseDirectivePrevious(StringRef DirName, SMLoc) { 
-  MCSectionSubPair PreviousSection = getStreamer().getPreviousSection(); 
-  if (PreviousSection.first == nullptr) 
-      return TokError(".previous without corresponding .section"); 
-  getStreamer().SwitchSection(PreviousSection.first, PreviousSection.second); 
- 
-  return false; 
-} 
- 
-static MCSymbolAttr MCAttrForString(StringRef Type) { 
-  return StringSwitch<MCSymbolAttr>(Type) 
-          .Cases("STT_FUNC", "function", MCSA_ELF_TypeFunction) 
-          .Cases("STT_OBJECT", "object", MCSA_ELF_TypeObject) 
-          .Cases("STT_TLS", "tls_object", MCSA_ELF_TypeTLS) 
-          .Cases("STT_COMMON", "common", MCSA_ELF_TypeCommon) 
-          .Cases("STT_NOTYPE", "notype", MCSA_ELF_TypeNoType) 
-          .Cases("STT_GNU_IFUNC", "gnu_indirect_function", 
-                 MCSA_ELF_TypeIndFunction) 
-          .Case("gnu_unique_object", MCSA_ELF_TypeGnuUniqueObject) 
-          .Default(MCSA_Invalid); 
-} 
- 
-/// ParseDirectiveELFType 
-///  ::= .type identifier , STT_<TYPE_IN_UPPER_CASE> 
-///  ::= .type identifier , #attribute 
-///  ::= .type identifier , @attribute 
-///  ::= .type identifier , %attribute 
-///  ::= .type identifier , "attribute" 
-bool ELFAsmParser::ParseDirectiveType(StringRef, SMLoc) { 
-  StringRef Name; 
-  if (getParser().parseIdentifier(Name)) 
-    return TokError("expected identifier in directive"); 
- 
-  // Handle the identifier as the key symbol. 
-  MCSymbol *Sym = getContext().getOrCreateSymbol(Name); 
- 
-  // NOTE the comma is optional in all cases.  It is only documented as being 
-  // optional in the first case, however, GAS will silently treat the comma as 
-  // optional in all cases.  Furthermore, although the documentation states that 
-  // the first form only accepts STT_<TYPE_IN_UPPER_CASE>, in reality, GAS 
-  // accepts both the upper case name as well as the lower case aliases. 
-  if (getLexer().is(AsmToken::Comma)) 
-    Lex(); 
- 
-  if (getLexer().isNot(AsmToken::Identifier) && 
-      getLexer().isNot(AsmToken::Hash) && 
-      getLexer().isNot(AsmToken::Percent) && 
-      getLexer().isNot(AsmToken::String)) { 
-    if (!getLexer().getAllowAtInIdentifier()) 
-      return TokError("expected STT_<TYPE_IN_UPPER_CASE>, '#<type>', " 
-                      "'%<type>' or \"<type>\""); 
-    else if (getLexer().isNot(AsmToken::At)) 
-      return TokError("expected STT_<TYPE_IN_UPPER_CASE>, '#<type>', '@<type>', " 
-                      "'%<type>' or \"<type>\""); 
-  } 
- 
-  if (getLexer().isNot(AsmToken::String) && 
-      getLexer().isNot(AsmToken::Identifier)) 
-    Lex(); 
- 
-  SMLoc TypeLoc = getLexer().getLoc(); 
- 
-  StringRef Type; 
-  if (getParser().parseIdentifier(Type)) 
-    return TokError("expected symbol type in directive"); 
- 
-  MCSymbolAttr Attr = MCAttrForString(Type); 
-  if (Attr == MCSA_Invalid) 
-    return Error(TypeLoc, "unsupported attribute in '.type' directive"); 
- 
-  if (getLexer().isNot(AsmToken::EndOfStatement)) 
-    return TokError("unexpected token in '.type' directive"); 
-  Lex(); 
- 
-  getStreamer().emitSymbolAttribute(Sym, Attr); 
- 
-  return false; 
-} 
- 
-/// ParseDirectiveIdent 
-///  ::= .ident string 
-bool ELFAsmParser::ParseDirectiveIdent(StringRef, SMLoc) { 
-  if (getLexer().isNot(AsmToken::String)) 
-    return TokError("unexpected token in '.ident' directive"); 
- 
-  StringRef Data = getTok().getIdentifier(); 
- 
-  Lex(); 
- 
-  if (getLexer().isNot(AsmToken::EndOfStatement)) 
-    return TokError("unexpected token in '.ident' directive"); 
-  Lex(); 
- 
-  getStreamer().emitIdent(Data); 
-  return false; 
-} 
- 
-/// ParseDirectiveSymver 
-///  ::= .symver foo, bar2@zed 
-bool ELFAsmParser::ParseDirectiveSymver(StringRef, SMLoc) { 
-  StringRef Name; 
-  if (getParser().parseIdentifier(Name)) 
-    return TokError("expected identifier in directive"); 
- 
-  if (getLexer().isNot(AsmToken::Comma)) 
-    return TokError("expected a comma"); 
- 
-  // ARM assembly uses @ for a comment... 
-  // except when parsing the second parameter of the .symver directive. 
-  // Force the next symbol to allow @ in the identifier, which is 
-  // required for this directive and then reset it to its initial state. 
-  const bool AllowAtInIdentifier = getLexer().getAllowAtInIdentifier(); 
-  getLexer().setAllowAtInIdentifier(true); 
-  Lex(); 
-  getLexer().setAllowAtInIdentifier(AllowAtInIdentifier); 
- 
-  StringRef AliasName; 
-  if (getParser().parseIdentifier(AliasName)) 
-    return TokError("expected identifier in directive"); 
- 
-  if (AliasName.find('@') == StringRef::npos) 
-    return TokError("expected a '@' in the name"); 
- 
-  MCSymbol *Sym = getContext().getOrCreateSymbol(Name); 
-  getStreamer().emitELFSymverDirective(AliasName, Sym); 
-  return false; 
-} 
- 
-/// ParseDirectiveVersion 
-///  ::= .version string 
-bool ELFAsmParser::ParseDirectiveVersion(StringRef, SMLoc) { 
-  if (getLexer().isNot(AsmToken::String)) 
-    return TokError("unexpected token in '.version' directive"); 
- 
-  StringRef Data = getTok().getIdentifier(); 
- 
-  Lex(); 
- 
-  MCSection *Note = getContext().getELFSection(".note", ELF::SHT_NOTE, 0); 
- 
-  getStreamer().PushSection(); 
-  getStreamer().SwitchSection(Note); 
-  getStreamer().emitInt32(Data.size() + 1); // namesz 
-  getStreamer().emitInt32(0);               // descsz = 0 (no description). 
-  getStreamer().emitInt32(1);               // type = NT_VERSION 
-  getStreamer().emitBytes(Data);            // name 
-  getStreamer().emitInt8(0);                // NUL 
-  getStreamer().emitValueToAlignment(4); 
-  getStreamer().PopSection(); 
-  return false; 
-} 
- 
-/// ParseDirectiveWeakref 
-///  ::= .weakref foo, bar 
-bool ELFAsmParser::ParseDirectiveWeakref(StringRef, SMLoc) { 
-  // FIXME: Share code with the other alias building directives. 
- 
-  StringRef AliasName; 
-  if (getParser().parseIdentifier(AliasName)) 
-    return TokError("expected identifier in directive"); 
- 
-  if (getLexer().isNot(AsmToken::Comma)) 
-    return TokError("expected a comma"); 
- 
-  Lex(); 
- 
-  StringRef Name; 
-  if (getParser().parseIdentifier(Name)) 
-    return TokError("expected identifier in directive"); 
- 
-  MCSymbol *Alias = getContext().getOrCreateSymbol(AliasName); 
- 
-  MCSymbol *Sym = getContext().getOrCreateSymbol(Name); 
- 
-  getStreamer().emitWeakReference(Alias, Sym); 
-  return false; 
-} 
- 
-bool ELFAsmParser::ParseDirectiveSubsection(StringRef, SMLoc) { 
-  const MCExpr *Subsection = nullptr; 
-  if (getLexer().isNot(AsmToken::EndOfStatement)) { 
-    if (getParser().parseExpression(Subsection)) 
-     return true; 
-  } 
- 
-  if (getLexer().isNot(AsmToken::EndOfStatement)) 
-    return TokError("unexpected token in directive"); 
- 
-  Lex(); 
- 
-  getStreamer().SubSection(Subsection); 
-  return false; 
-} 
- 
-bool ELFAsmParser::ParseDirectiveCGProfile(StringRef S, SMLoc Loc) { 
-  return MCAsmParserExtension::ParseDirectiveCGProfile(S, Loc); 
-} 
- 
-namespace llvm { 
- 
-MCAsmParserExtension *createELFAsmParser() { 
-  return new ELFAsmParser; 
-} 
- 
-} // end namespace llvm 
+    bool InsertResult = getContext().addGenDwarfSection(Section);
+    if (InsertResult) {
+      if (getContext().getDwarfVersion() <= 2)
+        Warning(loc, "DWARF2 only supports one section per compilation unit");
+
+      if (!Section->getBeginSymbol()) {
+        MCSymbol *SectionStartSymbol = getContext().createTempSymbol();
+        getStreamer().emitLabel(SectionStartSymbol);
+        Section->setBeginSymbol(SectionStartSymbol);
+      }
+    }
+  }
+
+  return false;
+}
+
+bool ELFAsmParser::ParseDirectivePrevious(StringRef DirName, SMLoc) {
+  MCSectionSubPair PreviousSection = getStreamer().getPreviousSection();
+  if (PreviousSection.first == nullptr)
+      return TokError(".previous without corresponding .section");
+  getStreamer().SwitchSection(PreviousSection.first, PreviousSection.second);
+
+  return false;
+}
+
+static MCSymbolAttr MCAttrForString(StringRef Type) {
+  return StringSwitch<MCSymbolAttr>(Type)
+          .Cases("STT_FUNC", "function", MCSA_ELF_TypeFunction)
+          .Cases("STT_OBJECT", "object", MCSA_ELF_TypeObject)
+          .Cases("STT_TLS", "tls_object", MCSA_ELF_TypeTLS)
+          .Cases("STT_COMMON", "common", MCSA_ELF_TypeCommon)
+          .Cases("STT_NOTYPE", "notype", MCSA_ELF_TypeNoType)
+          .Cases("STT_GNU_IFUNC", "gnu_indirect_function",
+                 MCSA_ELF_TypeIndFunction)
+          .Case("gnu_unique_object", MCSA_ELF_TypeGnuUniqueObject)
+          .Default(MCSA_Invalid);
+}
+
+/// ParseDirectiveELFType
+///  ::= .type identifier , STT_<TYPE_IN_UPPER_CASE>
+///  ::= .type identifier , #attribute
+///  ::= .type identifier , @attribute
+///  ::= .type identifier , %attribute
+///  ::= .type identifier , "attribute"
+bool ELFAsmParser::ParseDirectiveType(StringRef, SMLoc) {
+  StringRef Name;
+  if (getParser().parseIdentifier(Name))
+    return TokError("expected identifier in directive");
+
+  // Handle the identifier as the key symbol.
+  MCSymbol *Sym = getContext().getOrCreateSymbol(Name);
+
+  // NOTE the comma is optional in all cases.  It is only documented as being
+  // optional in the first case, however, GAS will silently treat the comma as
+  // optional in all cases.  Furthermore, although the documentation states that
+  // the first form only accepts STT_<TYPE_IN_UPPER_CASE>, in reality, GAS
+  // accepts both the upper case name as well as the lower case aliases.
+  if (getLexer().is(AsmToken::Comma))
+    Lex();
+
+  if (getLexer().isNot(AsmToken::Identifier) &&
+      getLexer().isNot(AsmToken::Hash) &&
+      getLexer().isNot(AsmToken::Percent) &&
+      getLexer().isNot(AsmToken::String)) {
+    if (!getLexer().getAllowAtInIdentifier())
+      return TokError("expected STT_<TYPE_IN_UPPER_CASE>, '#<type>', "
+                      "'%<type>' or \"<type>\"");
+    else if (getLexer().isNot(AsmToken::At))
+      return TokError("expected STT_<TYPE_IN_UPPER_CASE>, '#<type>', '@<type>', "
+                      "'%<type>' or \"<type>\"");
+  }
+
+  if (getLexer().isNot(AsmToken::String) &&
+      getLexer().isNot(AsmToken::Identifier))
+    Lex();
+
+  SMLoc TypeLoc = getLexer().getLoc();
+
+  StringRef Type;
+  if (getParser().parseIdentifier(Type))
+    return TokError("expected symbol type in directive");
+
+  MCSymbolAttr Attr = MCAttrForString(Type);
+  if (Attr == MCSA_Invalid)
+    return Error(TypeLoc, "unsupported attribute in '.type' directive");
+
+  if (getLexer().isNot(AsmToken::EndOfStatement))
+    return TokError("unexpected token in '.type' directive");
+  Lex();
+
+  getStreamer().emitSymbolAttribute(Sym, Attr);
+
+  return false;
+}
+
+/// ParseDirectiveIdent
+///  ::= .ident string
+bool ELFAsmParser::ParseDirectiveIdent(StringRef, SMLoc) {
+  if (getLexer().isNot(AsmToken::String))
+    return TokError("unexpected token in '.ident' directive");
+
+  StringRef Data = getTok().getIdentifier();
+
+  Lex();
+
+  if (getLexer().isNot(AsmToken::EndOfStatement))
+    return TokError("unexpected token in '.ident' directive");
+  Lex();
+
+  getStreamer().emitIdent(Data);
+  return false;
+}
+
+/// ParseDirectiveSymver
+///  ::= .symver foo, bar2@zed
+bool ELFAsmParser::ParseDirectiveSymver(StringRef, SMLoc) {
+  StringRef Name;
+  if (getParser().parseIdentifier(Name))
+    return TokError("expected identifier in directive");
+
+  if (getLexer().isNot(AsmToken::Comma))
+    return TokError("expected a comma");
+
+  // ARM assembly uses @ for a comment...
+  // except when parsing the second parameter of the .symver directive.
+  // Force the next symbol to allow @ in the identifier, which is
+  // required for this directive and then reset it to its initial state.
+  const bool AllowAtInIdentifier = getLexer().getAllowAtInIdentifier();
+  getLexer().setAllowAtInIdentifier(true);
+  Lex();
+  getLexer().setAllowAtInIdentifier(AllowAtInIdentifier);
+
+  StringRef AliasName;
+  if (getParser().parseIdentifier(AliasName))
+    return TokError("expected identifier in directive");
+
+  if (AliasName.find('@') == StringRef::npos)
+    return TokError("expected a '@' in the name");
+
+  MCSymbol *Sym = getContext().getOrCreateSymbol(Name);
+  getStreamer().emitELFSymverDirective(AliasName, Sym);
+  return false;
+}
+
+/// ParseDirectiveVersion
+///  ::= .version string
+bool ELFAsmParser::ParseDirectiveVersion(StringRef, SMLoc) {
+  if (getLexer().isNot(AsmToken::String))
+    return TokError("unexpected token in '.version' directive");
+
+  StringRef Data = getTok().getIdentifier();
+
+  Lex();
+
+  MCSection *Note = getContext().getELFSection(".note", ELF::SHT_NOTE, 0);
+
+  getStreamer().PushSection();
+  getStreamer().SwitchSection(Note);
+  getStreamer().emitInt32(Data.size() + 1); // namesz
+  getStreamer().emitInt32(0);               // descsz = 0 (no description).
+  getStreamer().emitInt32(1);               // type = NT_VERSION
+  getStreamer().emitBytes(Data);            // name
+  getStreamer().emitInt8(0);                // NUL
+  getStreamer().emitValueToAlignment(4);
+  getStreamer().PopSection();
+  return false;
+}
+
+/// ParseDirectiveWeakref
+///  ::= .weakref foo, bar
+bool ELFAsmParser::ParseDirectiveWeakref(StringRef, SMLoc) {
+  // FIXME: Share code with the other alias building directives.
+
+  StringRef AliasName;
+  if (getParser().parseIdentifier(AliasName))
+    return TokError("expected identifier in directive");
+
+  if (getLexer().isNot(AsmToken::Comma))
+    return TokError("expected a comma");
+
+  Lex();
+
+  StringRef Name;
+  if (getParser().parseIdentifier(Name))
+    return TokError("expected identifier in directive");
+
+  MCSymbol *Alias = getContext().getOrCreateSymbol(AliasName);
+
+  MCSymbol *Sym = getContext().getOrCreateSymbol(Name);
+
+  getStreamer().emitWeakReference(Alias, Sym);
+  return false;
+}
+
+bool ELFAsmParser::ParseDirectiveSubsection(StringRef, SMLoc) {
+  const MCExpr *Subsection = nullptr;
+  if (getLexer().isNot(AsmToken::EndOfStatement)) {
+    if (getParser().parseExpression(Subsection))
+     return true;
+  }
+
+  if (getLexer().isNot(AsmToken::EndOfStatement))
+    return TokError("unexpected token in directive");
+
+  Lex();
+
+  getStreamer().SubSection(Subsection);
+  return false;
+}
+
+bool ELFAsmParser::ParseDirectiveCGProfile(StringRef S, SMLoc Loc) {
+  return MCAsmParserExtension::ParseDirectiveCGProfile(S, Loc);
+}
+
+namespace llvm {
+
+MCAsmParserExtension *createELFAsmParser() {
+  return new ELFAsmParser;
+}
+
+} // end namespace llvm