LLVMExternalWeakLinkage,
LLVMGhostLinkage,
LLVMCommonLinkage,
- LLVMLinkerPrivateLinkage,
- LLVMLinkerWeakLinkage);
+ LLVMLinkerPrivateLinkage);
for LLVMLinkage use
(LLVMExternalLinkage => 0,
LLVMExternalWeakLinkage => 11,
LLVMGhostLinkage => 12,
LLVMCommonLinkage => 13,
- LLVMLinkerPrivateLinkage => 14,
- LLVMLinkerWeakLinkage => 15);
+ LLVMLinkerPrivateLinkage => 14);
pragma Convention (C, LLVMLinkage);
<ol>
<li><a href="#linkage_private">'<tt>private</tt>' Linkage</a></li>
<li><a href="#linkage_linker_private">'<tt>linker_private</tt>' Linkage</a></li>
- <li><a href="#linkage_linker_weak">'<tt>linker_weak</tt>' Linkage</a></li>
<li><a href="#linkage_internal">'<tt>internal</tt>' Linkage</a></li>
<li><a href="#linkage_available_externally">'<tt>available_externally</tt>' Linkage</a></li>
<li><a href="#linkage_linkonce">'<tt>linkonce</tt>' Linkage</a></li>
<dl>
<dt><tt><b><a name="linkage_private">private</a></b></tt></dt>
- <dd>Global values with "<tt>private</tt>" linkage are only directly accessible
- by objects in the current module. In particular, linking code into a
- module with an private global value may cause the private to be renamed as
- necessary to avoid collisions. Because the symbol is private to the
- module, all references can be updated. This doesn't show up in any symbol
- table in the object file.</dd>
+ <dd>Global values with private linkage are only directly accessible by objects
+ in the current module. In particular, linking code into a module with an
+ private global value may cause the private to be renamed as necessary to
+ avoid collisions. Because the symbol is private to the module, all
+ references can be updated. This doesn't show up in any symbol table in the
+ object file.</dd>
<dt><tt><b><a name="linkage_linker_private">linker_private</a></b></tt></dt>
- <dd>Similar to <tt>private</tt>, but the symbol is passed through the
- assembler and removed by the linker after evaluation. Note that (unlike
- <tt>private</tt> symbols) <tt>linker_private</tt> symbols are subject to
- coalescing by the linker: weak symbols get merged and redefinitions are
- rejected. However, unlike normal strong symbols, they are removed by the
- linker from the final linked image (executable or dynamic library).
- This is currently only used for Objective-C metadata.</dd>
-
- <dt><tt><b><a name="linkage_linker_weak">linker_weak</a></b></tt></dt>
- <dd>Global values with "<tt>linker_weak</tt>" linkage are given weak linkage,
- but are removed by the linker after evaluation. Unlike normal weak
- symbols, linker weak symbols are removed by the linker from the linal
- linked image (executable or dynamic library). This is currently only used
- for Objective-C metadata.</dd>
+ <dd>Similar to private, but the symbol is passed through the assembler and
+ removed by the linker after evaluation. Note that (unlike private
+ symbols) linker_private symbols are subject to coalescing by the linker:
+ weak symbols get merged and redefinitions are rejected. However, unlike
+ normal strong symbols, they are removed by the linker from the final
+ linked image (executable or dynamic library).</dd>
<dt><tt><b><a name="linkage_internal">internal</a></b></tt></dt>
- <dd>Similar to <tt>private</tt>, but the value shows as a local symbol
+ <dd>Similar to private, but the value shows as a local symbol
(<tt>STB_LOCAL</tt> in the case of ELF) in the object file. This
corresponds to the notion of the '<tt>static</tt>' keyword in C.</dd>
LLVMExternalWeakLinkage,/**< ExternalWeak linkage description */
LLVMGhostLinkage, /**< Obsolete */
LLVMCommonLinkage, /**< Tentative definitions */
- LLVMLinkerPrivateLinkage, /**< Like private, but linker removes. */
- LLVMLinkerWeakLinkage /**< Like linker private, but weak. */
+ LLVMLinkerPrivateLinkage /**< Like Private, but linker removes. */
} LLVMLinkage;
typedef enum {
MCSymbol *GetCPISymbol(unsigned CPID) const;
/// GetJTISymbol - Return the symbol for the specified jump table entry.
- MCSymbol *GetJTISymbol(unsigned JTID, bool PassToLinker = false) const;
+ MCSymbol *GetJTISymbol(unsigned JTID, bool isLinkerPrivate = false) const;
/// GetJTSetSymbol - Return the symbol for the specified jump table .set
/// FIXME: privatize to AsmPrinter.
//
/// getJTISymbol - Return the MCSymbol for the specified non-empty jump table.
- /// If PassToLinker is specified, an 'l' label is returned, otherwise a normal
- /// 'L' label is returned.
- MCSymbol *getJTISymbol(unsigned JTI, MCContext &Ctx,
- bool PassToLinker = false) const;
+ /// If isLinkerPrivate is specified, an 'l' label is returned, otherwise a
+ /// normal 'L' label is returned.
+ MCSymbol *getJTISymbol(unsigned JTI, MCContext &Ctx,
+ bool isLinkerPrivate = false) const;
};
//===--------------------------------------------------------------------===//
AppendingLinkage, ///< Special purpose, only applies to global arrays
InternalLinkage, ///< Rename collisions when linking (static functions).
PrivateLinkage, ///< Like Internal, but omit from symbol table.
- LinkerPrivateLinkage, ///< Like private, but linker removes.
- LinkerWeakLinkage, ///< Like linker private, but weak.
+ LinkerPrivateLinkage, ///< Like Private, but linker removes.
DLLImportLinkage, ///< Function to be imported from DLL
DLLExportLinkage, ///< Function to be accessible from DLL.
ExternalWeakLinkage,///< ExternalWeak linkage description.
return Linkage == PrivateLinkage;
}
static bool isLinkerPrivateLinkage(LinkageTypes Linkage) {
- return Linkage == LinkerPrivateLinkage;
- }
- static bool isLinkerWeakLinkage(LinkageTypes Linkage) {
- return Linkage == LinkerWeakLinkage;
+ return Linkage==LinkerPrivateLinkage;
}
static bool isLocalLinkage(LinkageTypes Linkage) {
return isInternalLinkage(Linkage) || isPrivateLinkage(Linkage) ||
bool hasInternalLinkage() const { return isInternalLinkage(Linkage); }
bool hasPrivateLinkage() const { return isPrivateLinkage(Linkage); }
bool hasLinkerPrivateLinkage() const { return isLinkerPrivateLinkage(Linkage); }
- bool hasLinkerWeakLinkage() const { return isLinkerWeakLinkage(Linkage); }
bool hasLocalLinkage() const { return isLocalLinkage(Linkage); }
bool hasDLLImportLinkage() const { return isDLLImportLinkage(Linkage); }
bool hasDLLExportLinkage() const { return isDLLExportLinkage(Linkage); }
/// be passed through the assembler but be removed by the linker. This
/// is "l" on Darwin, currently used for some ObjC metadata.
const char *LinkerPrivateGlobalPrefix; // Defaults to ""
-
- /// LinkerWeakGlobalPrefix - This prefix is used for symbols that are marked
- /// "weak" and should be passed through the assembler, but be removed by the
- /// linker. This is "l" on Darwin, currently used for some ObjC metadata.
- const char *LinkerWeakGlobalPrefix; // Defaults to ""
/// InlineAsmStart/End - If these are nonempty, they contain a directive to
/// emit before and after an inline assembly statement.
const char *getLinkerPrivateGlobalPrefix() const {
return LinkerPrivateGlobalPrefix;
}
- const char *getLinkerWeakGlobalPrefix() const {
- return LinkerWeakGlobalPrefix;
- }
const char *getInlineAsmStart() const {
return InlineAsmStart;
}
enum ManglerPrefixTy {
Default, ///< Emit default string before each symbol.
Private, ///< Emit "private" prefix before each symbol.
- LinkerPrivate, ///< Emit "linker private" prefix before each symbol.
- LinkerWeak ///< Emit "linker weak" prefix before each symbol.
+ LinkerPrivate ///< Emit "linker private" prefix before each symbol.
};
private:
KEYWORD(private);
KEYWORD(linker_private);
- KEYWORD(linker_weak);
KEYWORD(internal);
KEYWORD(available_externally);
KEYWORD(linkonce);
// OptionalAddrSpace ('constant'|'global') ...
case lltok::kw_private : // OptionalLinkage
case lltok::kw_linker_private: // OptionalLinkage
- case lltok::kw_linker_weak: // OptionalLinkage
case lltok::kw_internal: // OptionalLinkage
case lltok::kw_weak: // OptionalLinkage
case lltok::kw_weak_odr: // OptionalLinkage
Linkage != GlobalValue::WeakODRLinkage &&
Linkage != GlobalValue::InternalLinkage &&
Linkage != GlobalValue::PrivateLinkage &&
- Linkage != GlobalValue::LinkerPrivateLinkage &&
- Linkage != GlobalValue::LinkerWeakLinkage)
+ Linkage != GlobalValue::LinkerPrivateLinkage)
return Error(LinkageLoc, "invalid linkage type for alias");
Constant *Aliasee;
/// ::= /*empty*/
/// ::= 'private'
/// ::= 'linker_private'
-/// ::= 'linker_weak'
/// ::= 'internal'
/// ::= 'weak'
/// ::= 'weak_odr'
default: Res=GlobalValue::ExternalLinkage; return false;
case lltok::kw_private: Res = GlobalValue::PrivateLinkage; break;
case lltok::kw_linker_private: Res = GlobalValue::LinkerPrivateLinkage; break;
- case lltok::kw_linker_weak: Res = GlobalValue::LinkerWeakLinkage; break;
case lltok::kw_internal: Res = GlobalValue::InternalLinkage; break;
case lltok::kw_weak: Res = GlobalValue::WeakAnyLinkage; break;
case lltok::kw_weak_odr: Res = GlobalValue::WeakODRLinkage; break;
break;
case GlobalValue::PrivateLinkage:
case GlobalValue::LinkerPrivateLinkage:
- case GlobalValue::LinkerWeakLinkage:
case GlobalValue::InternalLinkage:
case GlobalValue::AvailableExternallyLinkage:
case GlobalValue::LinkOnceAnyLinkage:
kw_declare, kw_define,
kw_global, kw_constant,
- kw_private, kw_linker_private, kw_linker_weak, kw_internal, kw_linkonce,
- kw_linkonce_odr, kw_weak, kw_weak_odr, kw_appending, kw_dllimport,
- kw_dllexport, kw_common,
+ kw_private, kw_linker_private, kw_internal, kw_linkonce, kw_linkonce_odr,
+ kw_weak, kw_weak_odr, kw_appending, kw_dllimport, kw_dllexport, kw_common,
kw_available_externally,
kw_default, kw_hidden, kw_protected,
kw_extern_weak,
case 11: return GlobalValue::LinkOnceODRLinkage;
case 12: return GlobalValue::AvailableExternallyLinkage;
case 13: return GlobalValue::LinkerPrivateLinkage;
- case 14: return GlobalValue::LinkerWeakLinkage;
}
}
case GlobalValue::LinkOnceODRLinkage: return 11;
case GlobalValue::AvailableExternallyLinkage: return 12;
case GlobalValue::LinkerPrivateLinkage: return 13;
- case GlobalValue::LinkerWeakLinkage: return 14;
}
}
case GlobalValue::LinkOnceODRLinkage:
case GlobalValue::WeakAnyLinkage:
case GlobalValue::WeakODRLinkage:
- case GlobalValue::LinkerWeakLinkage:
case GlobalValue::LinkerPrivateLinkage:
if (MAI->getWeakDefDirective() != 0) {
// .globl _foo
}
/// GetJTISymbol - Return the symbol for the specified jump table entry.
-MCSymbol *AsmPrinter::GetJTISymbol(unsigned JTID, bool PassToLinker) const {
- return MF->getJTISymbol(JTID, OutContext, PassToLinker);
+MCSymbol *AsmPrinter::GetJTISymbol(unsigned JTID, bool isLinkerPrivate) const {
+ return MF->getJTISymbol(JTID, OutContext, isLinkerPrivate);
}
/// GetJTSetSymbol - Return the symbol for the specified jump table .set
}
/// getJTISymbol - Return the MCSymbol for the specified non-empty jump table.
-/// If isLinkerPrivate or isLinkerWeak is specified, an 'l' label is returned,
-/// otherwise a normal 'L' label is returned.
-MCSymbol *MachineFunction::getJTISymbol(unsigned JTI, MCContext &Ctx,
- bool PassToLinker) const {
+/// If isLinkerPrivate is specified, an 'l' label is returned, otherwise a
+/// normal 'L' label is returned.
+MCSymbol *MachineFunction::getJTISymbol(unsigned JTI, MCContext &Ctx,
+ bool isLinkerPrivate) const {
assert(JumpTableInfo && "No jump tables");
assert(JTI < JumpTableInfo->getJumpTables().size() && "Invalid JTI!");
const MCAsmInfo &MAI = *getTarget().getMCAsmInfo();
- const char *Prefix = PassToLinker ?
- MAI.getLinkerPrivateGlobalPrefix() :
- MAI.getPrivateGlobalPrefix();
+ const char *Prefix = isLinkerPrivate ? MAI.getLinkerPrivateGlobalPrefix() :
+ MAI.getPrivateGlobalPrefix();
SmallString<60> Name;
raw_svector_ostream(Name)
<< Prefix << "JTI" << getFunctionNumber() << '_' << JTI;
/// the directive emitted (this occurs in ObjC metadata).
if (!GV) return false;
- // Check whether the mangled name has the "Private", "LinkerPrivate", or
- // "LinkerWeak" prefix.
+ // Check whether the mangled name has the "Private" or "LinkerPrivate" prefix.
if (GV->hasLocalLinkage() && !isa<Function>(GV)) {
// FIXME: ObjC metadata is currently emitted as internal symbols that have
- // \1L and \1l prefixes on them. Fix them to be Private / LinkerPrivate /
- // LinkerWeak and this horrible hack can go away.
+ // \1L and \0l prefixes on them. Fix them to be Private/LinkerPrivate and
+ // this horrible hack can go away.
MCSymbol *Sym = Mang->getSymbol(GV);
if (Sym->getName()[0] == 'L' || Sym->getName()[0] == 'l')
return false;
else if (SL == GlobalValue::LinkerPrivateLinkage &&
DL == GlobalValue::LinkerPrivateLinkage)
return GlobalValue::LinkerPrivateLinkage;
- else if (SL == GlobalValue::LinkerWeakLinkage &&
- DL == GlobalValue::LinkerWeakLinkage)
- return GlobalValue::LinkerWeakLinkage;
else {
assert (SL == GlobalValue::PrivateLinkage &&
DL == GlobalValue::PrivateLinkage && "Unexpected linkage type");
GlobalPrefix = "";
PrivateGlobalPrefix = ".";
LinkerPrivateGlobalPrefix = "";
- LinkerWeakGlobalPrefix = "";
InlineAsmStart = "APP";
InlineAsmEnd = "NO_APP";
AssemblerDialect = 0;
GlobalPrefix = "_";
PrivateGlobalPrefix = "L";
LinkerPrivateGlobalPrefix = "l";
- LinkerWeakGlobalPrefix = "l";
AllowQuotesInName = true;
HasSingleParameterDotFile = false;
HasSubsectionsViaSymbols = true;
Out << "GlobalValue::PrivateLinkage"; break;
case GlobalValue::LinkerPrivateLinkage:
Out << "GlobalValue::LinkerPrivateLinkage"; break;
- case GlobalValue::LinkerWeakLinkage:
- Out << "GlobalValue::LinkerWeakLinkage"; break;
case GlobalValue::AvailableExternallyLinkage:
Out << "GlobalValue::AvailableExternallyLinkage "; break;
case GlobalValue::LinkOnceAnyLinkage:
} else if (PrefixTy == Mangler::LinkerPrivate) {
const char *Prefix = MAI.getLinkerPrivateGlobalPrefix();
OutName.append(Prefix, Prefix+strlen(Prefix));
- } else if (PrefixTy == Mangler::LinkerWeak) {
- const char *Prefix = MAI.getLinkerWeakGlobalPrefix();
- OutName.append(Prefix, Prefix+strlen(Prefix));
}
const char *Prefix = MAI.getGlobalPrefix();
PrefixTy = Mangler::Private;
else if (GV->hasLinkerPrivateLinkage())
PrefixTy = Mangler::LinkerPrivate;
- else if (GV->hasLinkerWeakLinkage())
- PrefixTy = Mangler::LinkerWeak;
// If this global has a name, handle it simply.
if (GV->hasName()) {
case GlobalValue::WeakAnyLinkage:
case GlobalValue::WeakODRLinkage:
case GlobalValue::ExternalLinkage:
- case GlobalValue::LinkerWeakLinkage:
emitArrayBound(GVSym, GV);
OutStreamer.EmitSymbolAttribute(GVSym, MCSA_Global);
case GlobalValue::WeakAnyLinkage:
case GlobalValue::WeakODRLinkage:
case GlobalValue::ExternalWeakLinkage:
- case GlobalValue::LinkerWeakLinkage:
return ExternalWeak;
case GlobalValue::ExternalLinkage:
case GlobalValue::ExternalLinkage: break;
case GlobalValue::PrivateLinkage: Out << "private "; break;
case GlobalValue::LinkerPrivateLinkage: Out << "linker_private "; break;
- case GlobalValue::LinkerWeakLinkage: Out << "linker_weak "; break;
case GlobalValue::InternalLinkage: Out << "internal "; break;
case GlobalValue::LinkOnceAnyLinkage: Out << "linkonce "; break;
case GlobalValue::LinkOnceODRLinkage: Out << "linkonce_odr "; break;
return LLVMPrivateLinkage;
case GlobalValue::LinkerPrivateLinkage:
return LLVMLinkerPrivateLinkage;
- case GlobalValue::LinkerWeakLinkage:
- return LLVMLinkerWeakLinkage;
case GlobalValue::DLLImportLinkage:
return LLVMDLLImportLinkage;
case GlobalValue::DLLExportLinkage:
case LLVMLinkerPrivateLinkage:
GV->setLinkage(GlobalValue::LinkerPrivateLinkage);
break;
- case LLVMLinkerWeakLinkage:
- GV->setLinkage(GlobalValue::LinkerWeakLinkage);
- break;
case LLVMDLLImportLinkage:
GV->setLinkage(GlobalValue::DLLImportLinkage);
break;
static void DumpSymbolNameForGlobalValue(GlobalValue &GV) {
// Private linkage and available_externally linkage don't exist in symtab.
if (GV.hasPrivateLinkage() || GV.hasLinkerPrivateLinkage() ||
- GV.hasLinkerWeakLinkage() || GV.hasAvailableExternallyLinkage())
- return;
+ GV.hasAvailableExternallyLinkage()) return;
const std::string SymbolAddrStr = " "; // Not used yet...
char TypeChar = TypeCharForSymbol(GV);