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Add plumbing for the `linker_private' linkage type. This type is meant for

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"private" symbols which the assember shouldn't strip, but which the linker may
remove after evaluation. This is mostly useful for Objective-C metadata.

This is plumbing, so we don't have a use of it yet. More to come, etc.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76385 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Bill Wendling 2009-07-20 01:03:30 +00:00
parent 3f189a3eb4
commit 3d10a5a757
29 changed files with 199 additions and 96 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

26
docs/LangRef.html
View File

@ -20,7 +20,24 @@
<li><a href="#highlevel">High Level Structure</a>
<ol>
<li><a href="#modulestructure">Module Structure</a></li>
<li><a href="#linkage">Linkage Types</a></li>
<li><a href="#linkage">Linkage Types</a>
<ol>
<li><a href="#linkage_private">private</a></li>
<li><a href="#linkage_linker_private">linker_private</a></li>
<li><a href="#linkage_internal">internal</a></li>
<li><a href="#linkage_available_externally">available_externally</a></li>
<li><a href="#linkage_linkonce">linkonce</a></li>
<li><a href="#linkage_common">common</a></li>
<li><a href="#linkage_weak">weak</a></li>
<li><a href="#linkage_appending">appending</a></li>
<li><a href="#linkage_externweak">extern_weak</a></li>
<li><a href="#linkage_linkonce">linkonce_odr</a></li>
<li><a href="#linkage_weak">weak_odr</a></li>
<li><a href="#linkage_external">externally visible</a></li>
<li><a href="#linkage_dllimport">dllimport</a></li>
<li><a href="#linkage_dllexport">dllexport</a></li>
</ol>
</li>
<li><a href="#callingconv">Calling Conventions</a></li>
<li><a href="#namedtypes">Named Types</a></li>
<li><a href="#globalvars">Global Variables</a></li>
@ -502,6 +519,11 @@ All Global Variables and Functions have one of the following types of linkage:
object file.
</dd>
<dt><tt><b><a name="linkage_linker_private">linker_private</a></b></tt>: </dt>
<dd>Similar to private, but the symbol is passed through the assembler and
removed by the linker after evaluation.</dd>
<dt><tt><b><a name="linkage_internal">internal</a></b></tt>: </dt>
<dd> Similar to private, but the value shows as a local symbol (STB_LOCAL in
@ -509,7 +531,7 @@ All Global Variables and Functions have one of the following types of linkage:
'<tt>static</tt>' keyword in C.
</dd>
<dt><tt><b><a name="available_externally">available_externally</a></b></tt>:
<dt><tt><b><a name="linkage_available_externally">available_externally</a></b></tt>:
</dt>
<dd>Globals with "<tt>available_externally</tt>" linkage are never emitted

1
include/llvm-c/Core.h
View File

@ -141,6 +141,7 @@ typedef enum {
LLVMInternalLinkage, /**< Rename collisions when linking (static
functions) */
LLVMPrivateLinkage, /**< Like Internal, but omit from symbol table */
LLVMLinkerPrivateLinkage, /**< Like Private, but linker removes. */
LLVMDLLImportLinkage, /**< Function to be imported from DLL */
LLVMDLLExportLinkage, /**< Function to be accessible from DLL */
LLVMExternalWeakLinkage,/**< ExternalWeak linkage description */

17
include/llvm/GlobalValue.h
View File

@ -37,13 +37,14 @@ public:
WeakAnyLinkage, ///< Keep one copy of named function when linking (weak)
WeakODRLinkage, ///< Same, but only replaced by something equivalent.
AppendingLinkage, ///< Special purpose, only applies to global arrays
InternalLinkage, ///< Rename collisions when linking (static functions)
PrivateLinkage, ///< Like Internal, but omit from symbol table
InternalLinkage, ///< Rename collisions when linking (static functions).
PrivateLinkage, ///< Like Internal, but omit from symbol table.
LinkerPrivateLinkage, ///< Like Private, but linker removes.
DLLImportLinkage, ///< Function to be imported from DLL
DLLExportLinkage, ///< Function to be accessible from DLL
ExternalWeakLinkage,///< ExternalWeak linkage description
GhostLinkage, ///< Stand-in functions for streaming fns from BC files
CommonLinkage ///< Tentative definitions
DLLExportLinkage, ///< Function to be accessible from DLL.
ExternalWeakLinkage,///< ExternalWeak linkage description.
GhostLinkage, ///< Stand-in functions for streaming fns from BC files.
CommonLinkage ///< Tentative definitions.
};
/// @brief An enumeration for the kinds of visibility of global values.
@ -123,8 +124,10 @@ public:
bool hasAppendingLinkage() const { return Linkage == AppendingLinkage; }
bool hasInternalLinkage() const { return Linkage == InternalLinkage; }
bool hasPrivateLinkage() const { return Linkage == PrivateLinkage; }
bool hasLinkerPrivateLinkage() const { return Linkage==LinkerPrivateLinkage; }
bool hasLocalLinkage() const {
return Linkage == InternalLinkage || Linkage == PrivateLinkage;
return hasInternalLinkage() || hasPrivateLinkage() ||
hasLinkerPrivateLinkage();
}
bool hasDLLImportLinkage() const { return Linkage == DLLImportLinkage; }
bool hasDLLExportLinkage() const { return Linkage == DLLExportLinkage; }

21
include/llvm/Support/Mangler.h
View File

@ -25,6 +25,14 @@ class Value;
class GlobalValue;
class Mangler {
public:
enum ManglerPrefixTy {
DefaultPrefixTy, ///< Emit default string before each symbol.
PrivatePrefixTy, ///< Emit "private" prefix before each symbol.
LinkerPrivatePrefixTy ///< Emit "linker private" prefix before each symbol.
};
private:
/// Prefix - This string is added to each symbol that is emitted, unless the
/// symbol is marked as not needing this prefix.
const char *Prefix;
@ -33,6 +41,10 @@ class Mangler {
/// linkage.
const char *PrivatePrefix;
/// LinkerPrivatePrefix - This string is emitted before each symbol with
/// "linker_private" linkage.
const char *LinkerPrivatePrefix;
/// UseQuotes - If this is set, the target accepts global names in quotes,
/// e.g. "foo bar" is a legal name. This syntax is used instead of escaping
/// the space character. By default, this is false.
@ -50,12 +62,13 @@ class Mangler {
/// AcceptableChars - This bitfield contains a one for each character that is
/// allowed to be part of an unmangled name.
unsigned AcceptableChars[256/32];
public:
unsigned AcceptableChars[256 / 32];
public:
// Mangler ctor - if a prefix is specified, it will be prepended onto all
// symbols.
Mangler(Module &M, const char *Prefix = "", const char *privatePrefix = "");
Mangler(Module &M, const char *Prefix = "", const char *privatePrefix = "",
const char *linkerPrivatePrefix = "");
/// setUseQuotes - If UseQuotes is set to true, this target accepts quoted
/// strings for assembler labels.
@ -90,7 +103,7 @@ public:
/// from getValueName.
///
std::string makeNameProper(const std::string &x,
bool hasPrivateLinkage = false);
ManglerPrefixTy PrefixTy = DefaultPrefixTy);
};
} // End llvm namespace

1
lib/AsmParser/LLLexer.cpp
View File

@ -474,6 +474,7 @@ lltok::Kind LLLexer::LexIdentifier() {
KEYWORD(global); KEYWORD(constant);
KEYWORD(private);
KEYWORD(linker_private);
KEYWORD(internal);
KEYWORD(available_externally);
KEYWORD(linkonce);

57
lib/AsmParser/LLParser.cpp
View File

@ -123,18 +123,19 @@ bool LLParser::ParseTopLevelEntities() {
// optional leading prefixes, the production is:
// GlobalVar ::= OptionalLinkage OptionalVisibility OptionalThreadLocal
// OptionalAddrSpace ('constant'|'global') ...
case lltok::kw_private: // OptionalLinkage
case lltok::kw_internal: // OptionalLinkage
case lltok::kw_weak: // OptionalLinkage
case lltok::kw_weak_odr: // OptionalLinkage
case lltok::kw_linkonce: // OptionalLinkage
case lltok::kw_linkonce_odr: // OptionalLinkage
case lltok::kw_appending: // OptionalLinkage
case lltok::kw_dllexport: // OptionalLinkage
case lltok::kw_common: // OptionalLinkage
case lltok::kw_dllimport: // OptionalLinkage
case lltok::kw_extern_weak: // OptionalLinkage
case lltok::kw_external: { // OptionalLinkage
case lltok::kw_private : // OptionalLinkage
case lltok::kw_linker_private: // OptionalLinkage
case lltok::kw_internal: // OptionalLinkage
case lltok::kw_weak: // OptionalLinkage
case lltok::kw_weak_odr: // OptionalLinkage
case lltok::kw_linkonce: // OptionalLinkage
case lltok::kw_linkonce_odr: // OptionalLinkage
case lltok::kw_appending: // OptionalLinkage
case lltok::kw_dllexport: // OptionalLinkage
case lltok::kw_common: // OptionalLinkage
case lltok::kw_dllimport: // OptionalLinkage
case lltok::kw_extern_weak: // OptionalLinkage
case lltok::kw_external: { // OptionalLinkage
unsigned Linkage, Visibility;
if (ParseOptionalLinkage(Linkage) ||
ParseOptionalVisibility(Visibility) ||
@ -420,7 +421,8 @@ bool LLParser::ParseAlias(const std::string &Name, LocTy NameLoc,
Linkage != GlobalValue::WeakAnyLinkage &&
Linkage != GlobalValue::WeakODRLinkage &&
Linkage != GlobalValue::InternalLinkage &&
Linkage != GlobalValue::PrivateLinkage)
Linkage != GlobalValue::PrivateLinkage &&
Linkage != GlobalValue::LinkerPrivateLinkage)
return Error(LinkageLoc, "invalid linkage type for alias");
Constant *Aliasee;
@ -792,6 +794,7 @@ bool LLParser::ParseOptionalAttrs(unsigned &Attrs, unsigned AttrKind) {
/// ParseOptionalLinkage
/// ::= /*empty*/
/// ::= 'private'
/// ::= 'linker_private'
/// ::= 'internal'
/// ::= 'weak'
/// ::= 'weak_odr'
@ -806,22 +809,23 @@ bool LLParser::ParseOptionalAttrs(unsigned &Attrs, unsigned AttrKind) {
bool LLParser::ParseOptionalLinkage(unsigned &Res, bool &HasLinkage) {
HasLinkage = false;
switch (Lex.getKind()) {
default: Res = GlobalValue::ExternalLinkage; return false;
case lltok::kw_private: Res = GlobalValue::PrivateLinkage; 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;
case lltok::kw_linkonce: Res = GlobalValue::LinkOnceAnyLinkage; break;
case lltok::kw_linkonce_odr: Res = GlobalValue::LinkOnceODRLinkage; break;
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_internal: Res = GlobalValue::InternalLinkage; break;
case lltok::kw_weak: Res = GlobalValue::WeakAnyLinkage; break;
case lltok::kw_weak_odr: Res = GlobalValue::WeakODRLinkage; break;
case lltok::kw_linkonce: Res = GlobalValue::LinkOnceAnyLinkage; break;
case lltok::kw_linkonce_odr: Res = GlobalValue::LinkOnceODRLinkage; break;
case lltok::kw_available_externally:
Res = GlobalValue::AvailableExternallyLinkage;
break;
case lltok::kw_appending: Res = GlobalValue::AppendingLinkage; break;
case lltok::kw_dllexport: Res = GlobalValue::DLLExportLinkage; break;
case lltok::kw_common: Res = GlobalValue::CommonLinkage; break;
case lltok::kw_dllimport: Res = GlobalValue::DLLImportLinkage; break;
case lltok::kw_extern_weak: Res = GlobalValue::ExternalWeakLinkage; break;
case lltok::kw_external: Res = GlobalValue::ExternalLinkage; break;
case lltok::kw_appending: Res = GlobalValue::AppendingLinkage; break;
case lltok::kw_dllexport: Res = GlobalValue::DLLExportLinkage; break;
case lltok::kw_common: Res = GlobalValue::CommonLinkage; break;
case lltok::kw_dllimport: Res = GlobalValue::DLLImportLinkage; break;
case lltok::kw_extern_weak: Res = GlobalValue::ExternalWeakLinkage; break;
case lltok::kw_external: Res = GlobalValue::ExternalLinkage; break;
}
Lex.Lex();
HasLinkage = true;
@ -2211,6 +2215,7 @@ bool LLParser::ParseFunctionHeader(Function *&Fn, bool isDefine) {
return Error(LinkageLoc, "invalid linkage for function definition");
break;
case GlobalValue::PrivateLinkage:
case GlobalValue::LinkerPrivateLinkage:
case GlobalValue::InternalLinkage:
case GlobalValue::AvailableExternallyLinkage:
case GlobalValue::LinkOnceAnyLinkage:

5
lib/AsmParser/LLToken.h
View File

@ -36,8 +36,9 @@ namespace lltok {
kw_declare, kw_define,
kw_global, kw_constant,
kw_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_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,
kw_external, kw_thread_local,

21
lib/Bitcode/Reader/BitcodeReader.cpp
View File

@ -60,19 +60,20 @@ static bool ConvertToString(SmallVector<uint64_t, 64> &Record, unsigned Idx,
static GlobalValue::LinkageTypes GetDecodedLinkage(unsigned Val) {
switch (Val) {
default: // Map unknown/new linkages to external
case 0: return GlobalValue::ExternalLinkage;
case 1: return GlobalValue::WeakAnyLinkage;
case 2: return GlobalValue::AppendingLinkage;
case 3: return GlobalValue::InternalLinkage;
case 4: return GlobalValue::LinkOnceAnyLinkage;
case 5: return GlobalValue::DLLImportLinkage;
case 6: return GlobalValue::DLLExportLinkage;
case 7: return GlobalValue::ExternalWeakLinkage;
case 8: return GlobalValue::CommonLinkage;
case 9: return GlobalValue::PrivateLinkage;
case 0: return GlobalValue::ExternalLinkage;
case 1: return GlobalValue::WeakAnyLinkage;
case 2: return GlobalValue::AppendingLinkage;
case 3: return GlobalValue::InternalLinkage;
case 4: return GlobalValue::LinkOnceAnyLinkage;
case 5: return GlobalValue::DLLImportLinkage;
case 6: return GlobalValue::DLLExportLinkage;
case 7: return GlobalValue::ExternalWeakLinkage;
case 8: return GlobalValue::CommonLinkage;
case 9: return GlobalValue::PrivateLinkage;
case 10: return GlobalValue::WeakODRLinkage;
case 11: return GlobalValue::LinkOnceODRLinkage;
case 12: return GlobalValue::AvailableExternallyLinkage;
case 13: return GlobalValue::LinkerPrivateLinkage;
}
}

27
lib/Bitcode/Writer/BitcodeWriter.cpp
View File

@ -281,19 +281,20 @@ static unsigned getEncodedLinkage(const GlobalValue *GV) {
switch (GV->getLinkage()) {
default: llvm_unreachable("Invalid linkage!");
case GlobalValue::GhostLinkage: // Map ghost linkage onto external.
case GlobalValue::ExternalLinkage: return 0;
case GlobalValue::WeakAnyLinkage: return 1;
case GlobalValue::AppendingLinkage: return 2;
case GlobalValue::InternalLinkage: return 3;
case GlobalValue::LinkOnceAnyLinkage: return 4;
case GlobalValue::DLLImportLinkage: return 5;
case GlobalValue::DLLExportLinkage: return 6;
case GlobalValue::ExternalWeakLinkage: return 7;
case GlobalValue::CommonLinkage: return 8;
case GlobalValue::PrivateLinkage: return 9;
case GlobalValue::WeakODRLinkage: return 10;
case GlobalValue::LinkOnceODRLinkage: return 11;
case GlobalValue::AvailableExternallyLinkage: return 12;
case GlobalValue::ExternalLinkage: return 0;
case GlobalValue::WeakAnyLinkage: return 1;
case GlobalValue::AppendingLinkage: return 2;
case GlobalValue::InternalLinkage: return 3;
case GlobalValue::LinkOnceAnyLinkage: return 4;
case GlobalValue::DLLImportLinkage: return 5;
case GlobalValue::DLLExportLinkage: return 6;
case GlobalValue::ExternalWeakLinkage: return 7;
case GlobalValue::CommonLinkage: return 8;
case GlobalValue::PrivateLinkage: return 9;
case GlobalValue::WeakODRLinkage: return 10;
case GlobalValue::LinkOnceODRLinkage: return 11;
case GlobalValue::AvailableExternallyLinkage: return 12;
case GlobalValue::LinkerPrivateLinkage: return 13;
}
}

3
lib/CodeGen/MachOWriter.cpp
View File

@ -764,6 +764,9 @@ MachOSym::MachOSym(const GlobalValue *gv, std::string name, uint8_t sect,
case GlobalValue::PrivateLinkage:
GVName = TAI->getPrivateGlobalPrefix() + name;
break;
case GlobalValue::LinkerPrivateLinkage:
GVName = TAI->getLessPrivateGlobalPrefix() + name;
break;
case GlobalValue::InternalLinkage:
GVName = TAI->getGlobalPrefix() + name;
break;

3
lib/Linker/LinkModules.cpp
View File

@ -709,6 +709,9 @@ CalculateAliasLinkage(const GlobalValue *SGV, const GlobalValue *DGV) {
else if (SL == GlobalValue::InternalLinkage &&
DL == GlobalValue::InternalLinkage)
return GlobalValue::InternalLinkage;
else if (SL == GlobalValue::LinkerPrivateLinkage &&
DL == GlobalValue::LinkerPrivateLinkage)
return GlobalValue::LinkerPrivateLinkage;
else {
assert (SL == GlobalValue::PrivateLinkage &&
DL == GlobalValue::PrivateLinkage && "Unexpected linkage type");

15
lib/Target/ARM/AsmPrinter/ARMAsmPrinter.cpp
View File

@ -93,12 +93,15 @@ namespace {
void Init(const std::string &GV, Mangler *Mang) {
// Already initialized.
if (!Stub.empty()) return;
Stub = Mang->makeNameProper(GV+"$stub", true);
LazyPtr = Mang->makeNameProper(GV+"$lazy_ptr", true);
SLP = Mang->makeNameProper(GV+"$slp", true);
SCV = Mang->makeNameProper(GV+"$scv", true);
Stub = Mang->makeNameProper(GV + "$stub",
Mangler::PrivatePrefixTy);
LazyPtr = Mang->makeNameProper(GV + "$lazy_ptr",
Mangler::PrivatePrefixTy);
SLP = Mang->makeNameProper(GV + "$slp",
Mangler::PrivatePrefixTy);
SCV = Mang->makeNameProper(GV + "$scv",
Mangler::PrivatePrefixTy);
}
};
/// FnStubs - Keeps the set of external function GlobalAddresses that the
@ -256,6 +259,7 @@ bool ARMAsmPrinter::runOnMachineFunction(MachineFunction &MF) {
switch (F->getLinkage()) {
default: llvm_unreachable("Unknown linkage type!");
case Function::PrivateLinkage:
case Function::LinkerPrivateLinkage:
case Function::InternalLinkage:
SwitchToTextSection("\t.text", F);
break;
@ -1184,6 +1188,7 @@ void ARMAsmPrinter::printModuleLevelGV(const GlobalVariable* GVar) {
O << "\t.globl " << name << "\n";
// FALL THROUGH
case GlobalValue::PrivateLinkage:
case GlobalValue::LinkerPrivateLinkage:
case GlobalValue::InternalLinkage:
break;
default:

2
lib/Target/Alpha/AsmPrinter/AlphaAsmPrinter.cpp
View File

@ -157,6 +157,7 @@ bool AlphaAsmPrinter::runOnMachineFunction(MachineFunction &MF) {
default: llvm_unreachable("Unknown linkage type!");
case Function::InternalLinkage: // Symbols default to internal.
case Function::PrivateLinkage:
case Function::LinkerPrivateLinkage:
break;
case Function::ExternalLinkage:
O << "\t.globl " << CurrentFnName << "\n";
@ -245,6 +246,7 @@ void AlphaAsmPrinter::printModuleLevelGV(const GlobalVariable* GVar) {
break;
case GlobalValue::InternalLinkage:
case GlobalValue::PrivateLinkage:
case GlobalValue::LinkerPrivateLinkage:
break;
default:
llvm_unreachable("Unknown linkage type!");

2
lib/Target/CellSPU/AsmPrinter/SPUAsmPrinter.cpp
View File

@ -437,6 +437,7 @@ LinuxAsmPrinter::runOnMachineFunction(MachineFunction &MF)
switch (F->getLinkage()) {
default: llvm_unreachable("Unknown linkage type!");
case Function::PrivateLinkage:
case Function::LinkerPrivateLinkage:
case Function::InternalLinkage: // Symbols default to internal.
break;
case Function::ExternalLinkage:
@ -571,6 +572,7 @@ void LinuxAsmPrinter::printModuleLevelGV(const GlobalVariable* GVar) {
<< "\t.type " << name << ", @object\n";
// FALL THROUGH
case GlobalValue::PrivateLinkage:
case GlobalValue::LinkerPrivateLinkage:
case GlobalValue::InternalLinkage:
break;
default:

2
lib/Target/CppBackend/CPPBackend.cpp
View File

@ -288,6 +288,8 @@ namespace {
Out << "GlobalValue::InternalLinkage"; break;
case GlobalValue::PrivateLinkage:
Out << "GlobalValue::PrivateLinkage"; break;
case GlobalValue::LinkerPrivateLinkage:
Out << "GlobalValue::LinkerPrivateLinkage"; break;
case GlobalValue::AvailableExternallyLinkage:
Out << "GlobalValue::AvailableExternallyLinkage "; break;
case GlobalValue::LinkOnceAnyLinkage:

1
lib/Target/ELFTargetAsmInfo.cpp
View File

@ -77,6 +77,7 @@ ELFTargetAsmInfo::SelectSectionForGlobal(const GlobalValue *GV) const {
switch (F->getLinkage()) {
default: llvm_unreachable("Unknown linkage type!");
case Function::PrivateLinkage:
case Function::LinkerPrivateLinkage:
case Function::InternalLinkage:
case Function::DLLExportLinkage:
case Function::ExternalLinkage:

1
lib/Target/IA64/AsmPrinter/IA64AsmPrinter.cpp
View File

@ -317,6 +317,7 @@ void IA64AsmPrinter::printModuleLevelGV(const GlobalVariable* GVar) {
// FALL THROUGH
case GlobalValue::InternalLinkage:
case GlobalValue::PrivateLinkage:
case GlobalValue::LinkerPrivateLinkage:
break;
case GlobalValue::GhostLinkage:
llvm_unreachable("GhostLinkage cannot appear in IA64AsmPrinter!");

1
lib/Target/MSP430/MSP430AsmPrinter.cpp
View File

@ -103,6 +103,7 @@ void MSP430AsmPrinter::emitFunctionHeader(const MachineFunction &MF) {
default: llvm_unreachable("Unknown linkage type!");
case Function::InternalLinkage: // Symbols default to internal.
case Function::PrivateLinkage:
case Function::LinkerPrivateLinkage:
break;
case Function::ExternalLinkage:
O << "\t.globl\t" << CurrentFnName << '\n';

1
lib/Target/Mips/AsmPrinter/MipsAsmPrinter.cpp
View File

@ -538,6 +538,7 @@ printModuleLevelGV(const GlobalVariable* GVar) {
O << TAI->getGlobalDirective() << name << '\n';
// Fall Through
case GlobalValue::PrivateLinkage:
case GlobalValue::LinkerPrivateLinkage:
case GlobalValue::InternalLinkage:
if (CVA && CVA->isCString())
printSizeAndType = false;

13
lib/Target/PowerPC/AsmPrinter/PPCAsmPrinter.cpp
View File

@ -70,9 +70,12 @@ namespace {
void Init(const std::string &GV, Mangler *Mang) {
// Already initialized.
if (!Stub.empty()) return;
Stub = Mang->makeNameProper(GV+"$stub", true);
LazyPtr = Mang->makeNameProper(GV+"$lazy_ptr", true);
AnonSymbol = Mang->makeNameProper(GV+"$stub$tmp", true);
Stub = Mang->makeNameProper(GV + "$stub",
Mangler::PrivatePrefixTy);
LazyPtr = Mang->makeNameProper(GV + "$lazy_ptr",
Mangler::PrivatePrefixTy);
AnonSymbol = Mang->makeNameProper(GV + "$stub$tmp",
Mangler::PrivatePrefixTy);
}
};
@ -594,6 +597,7 @@ bool PPCLinuxAsmPrinter::runOnMachineFunction(MachineFunction &MF) {
switch (F->getLinkage()) {
default: llvm_unreachable("Unknown linkage type!");
case Function::PrivateLinkage:
case Function::LinkerPrivateLinkage:
case Function::InternalLinkage: // Symbols default to internal.
break;
case Function::ExternalLinkage:
@ -725,6 +729,7 @@ void PPCLinuxAsmPrinter::printModuleLevelGV(const GlobalVariable* GVar) {
// FALL THROUGH
case GlobalValue::InternalLinkage:
case GlobalValue::PrivateLinkage:
case GlobalValue::LinkerPrivateLinkage:
break;
default:
llvm_unreachable("Unknown linkage type!");
@ -771,6 +776,7 @@ bool PPCDarwinAsmPrinter::runOnMachineFunction(MachineFunction &MF) {
switch (F->getLinkage()) {
default: llvm_unreachable("Unknown linkage type!");
case Function::PrivateLinkage:
case Function::LinkerPrivateLinkage:
case Function::InternalLinkage: // Symbols default to internal.
break;
case Function::ExternalLinkage:
@ -954,6 +960,7 @@ void PPCDarwinAsmPrinter::printModuleLevelGV(const GlobalVariable* GVar) {
// FALL THROUGH
case GlobalValue::InternalLinkage:
case GlobalValue::PrivateLinkage:
case GlobalValue::LinkerPrivateLinkage:
break;
default:
llvm_unreachable("Unknown linkage type!");

1
lib/Target/Sparc/AsmPrinter/SparcAsmPrinter.cpp
View File

@ -294,6 +294,7 @@ void SparcAsmPrinter::printModuleLevelGV(const GlobalVariable* GVar) {
O << TAI->getGlobalDirective() << name << '\n';
// FALL THROUGH
case GlobalValue::PrivateLinkage:
case GlobalValue::LinkerPrivateLinkage:
case GlobalValue::InternalLinkage:
break;
case GlobalValue::GhostLinkage:

2
lib/Target/SystemZ/AsmPrinter/SystemZAsmPrinter.cpp
View File

@ -118,6 +118,7 @@ void SystemZAsmPrinter::emitFunctionHeader(const MachineFunction &MF) {
default: assert(0 && "Unknown linkage type!");
case Function::InternalLinkage: // Symbols default to internal.
case Function::PrivateLinkage:
case Function::LinkerPrivateLinkage:
break;
case Function::ExternalLinkage:
O << "\t.globl\t" << CurrentFnName << '\n';
@ -396,6 +397,7 @@ void SystemZAsmPrinter::printModuleLevelGV(const GlobalVariable* GVar) {
O << "\t.globl " << name << '\n';
// FALL THROUGH
case GlobalValue::PrivateLinkage:
case GlobalValue::LinkerPrivateLinkage:
case GlobalValue::InternalLinkage:
break;
default:

2
lib/Target/X86/AsmPrinter/X86ATTAsmPrinter.cpp
View File

@ -171,6 +171,7 @@ void X86ATTAsmPrinter::emitFunctionHeader(const MachineFunction &MF) {
default: llvm_unreachable("Unknown linkage type!");
case Function::InternalLinkage: // Symbols default to internal.
case Function::PrivateLinkage:
case Function::LinkerPrivateLinkage:
EmitAlignment(FnAlign, F);
break;
case Function::DLLExportLinkage:
@ -877,6 +878,7 @@ void X86ATTAsmPrinter::printModuleLevelGV(const GlobalVariable* GVar) {
O << "\t.globl " << name << '\n';
// FALL THROUGH
case GlobalValue::PrivateLinkage:
case GlobalValue::LinkerPrivateLinkage:
case GlobalValue::InternalLinkage:
break;
default:

1
lib/Target/X86/AsmPrinter/X86IntelAsmPrinter.cpp
View File

@ -146,6 +146,7 @@ bool X86IntelAsmPrinter::runOnMachineFunction(MachineFunction &MF) {
switch (F->getLinkage()) {
default: llvm_unreachable("Unsupported linkage type!");
case Function::PrivateLinkage:
case Function::LinkerPrivateLinkage:
case Function::InternalLinkage:
EmitAlignment(FnAlign);
break;

2
lib/Target/XCore/XCoreAsmPrinter.cpp
View File

@ -172,6 +172,7 @@ emitGlobal(const GlobalVariable *GV)
// FALL THROUGH
case GlobalValue::InternalLinkage:
case GlobalValue::PrivateLinkage:
case GlobalValue::LinkerPrivateLinkage:
break;
case GlobalValue::GhostLinkage:
llvm_unreachable("Should not have any unmaterialized functions!");
@ -228,6 +229,7 @@ emitFunctionStart(MachineFunction &MF)
default: llvm_unreachable("Unknown linkage type!");
case Function::InternalLinkage: // Symbols default to internal.
case Function::PrivateLinkage:
case Function::LinkerPrivateLinkage:
break;
case Function::ExternalLinkage:
emitGlobalDirective(CurrentFnName);

1
lib/Transforms/IPO/MergeFunctions.cpp
View File

@ -451,6 +451,7 @@ static LinkageCategory categorize(const Function *F) {
switch (F->getLinkage()) {
case GlobalValue::InternalLinkage:
case GlobalValue::PrivateLinkage:
case GlobalValue::LinkerPrivateLinkage:
return Internal;
case GlobalValue::WeakAnyLinkage:

25
lib/VMCore/AsmWriter.cpp
View File

@ -1334,21 +1334,22 @@ void AssemblyWriter::printModule(const Module *M) {
static void PrintLinkage(GlobalValue::LinkageTypes LT, raw_ostream &Out) {
switch (LT) {
case GlobalValue::PrivateLinkage: Out << "private "; break;
case GlobalValue::InternalLinkage: Out << "internal "; break;
case GlobalValue::ExternalLinkage: break;
case GlobalValue::PrivateLinkage: Out << "private "; break;
case GlobalValue::LinkerPrivateLinkage: Out << "linker_private "; break;
case GlobalValue::InternalLinkage: Out << "internal "; break;
case GlobalValue::LinkOnceAnyLinkage: Out << "linkonce "; break;
case GlobalValue::LinkOnceODRLinkage: Out << "linkonce_odr "; break;
case GlobalValue::WeakAnyLinkage: Out << "weak "; break;
case GlobalValue::WeakODRLinkage: Out << "weak_odr "; break;
case GlobalValue::CommonLinkage: Out << "common "; break;
case GlobalValue::AppendingLinkage: Out << "appending "; break;
case GlobalValue::DLLImportLinkage: Out << "dllimport "; break;
case GlobalValue::DLLExportLinkage: Out << "dllexport "; break;
case GlobalValue::ExternalWeakLinkage: Out << "extern_weak "; break;
case GlobalValue::AvailableExternallyLinkage:
Out << "available_externally ";
break;
case GlobalValue::LinkOnceAnyLinkage: Out << "linkonce "; break;
case GlobalValue::LinkOnceODRLinkage: Out << "linkonce_odr "; break;
case GlobalValue::WeakAnyLinkage: Out << "weak "; break;
case GlobalValue::WeakODRLinkage: Out << "weak_odr "; break;
case GlobalValue::CommonLinkage: Out << "common "; break;
case GlobalValue::AppendingLinkage: Out << "appending "; break;
case GlobalValue::DLLImportLinkage: Out << "dllimport "; break;
case GlobalValue::DLLExportLinkage: Out << "dllexport "; break;
case GlobalValue::ExternalWeakLinkage: Out << "extern_weak "; break;
case GlobalValue::ExternalLinkage: break;
case GlobalValue::GhostLinkage:
llvm_unreachable("GhostLinkage not allowed in AsmWriter!");
}

38
lib/VMCore/Mangler.cpp
View File

@ -32,7 +32,7 @@ static std::string MangleLetter(unsigned char C) {
/// in them, so mangle them as appropriate.
///
std::string Mangler::makeNameProper(const std::string &X,
bool hasPrivateLinkage) {
ManglerPrefixTy PrefixTy) {
assert(!X.empty() && "Cannot mangle empty strings");
if (!UseQuotes) {
@ -59,9 +59,13 @@ std::string Mangler::makeNameProper(const std::string &X,
if (NeedPrefix) {
Result = Prefix + Result;
if (hasPrivateLinkage)
if (PrefixTy == PrivatePrefixTy)
Result = PrivatePrefix + Result;
else if (PrefixTy == LinkerPrivatePrefixTy)
Result = LinkerPrivatePrefix + Result;
}
return Result;
}
@ -93,8 +97,12 @@ std::string Mangler::makeNameProper(const std::string &X,
return X.substr(1); // Strip off the \001.
Result = Prefix + X;
if (hasPrivateLinkage)
if (PrefixTy == PrivatePrefixTy)
Result = PrivatePrefix + Result;
else if (PrefixTy == LinkerPrivatePrefixTy)
Result = LinkerPrivatePrefix + Result;
return Result;
}
@ -112,9 +120,13 @@ std::string Mangler::makeNameProper(const std::string &X,
if (NeedPrefix) {
Result = Prefix + Result;
if (hasPrivateLinkage)
if (PrefixTy == PrivatePrefixTy)
Result = PrivatePrefix + Result;
else if (PrefixTy == LinkerPrivatePrefixTy)
Result = LinkerPrivatePrefix + Result;
}
Result = '"' + Result + '"';
return Result;
}
@ -128,10 +140,13 @@ std::string Mangler::getMangledName(const GlobalValue *GV, const char *Suffix,
bool ForcePrivate) {
assert((!isa<Function>(GV) || !cast<Function>(GV)->isIntrinsic()) &&
"Intrinsic functions cannot be mangled by Mangler");
ManglerPrefixTy PrefixTy =
(GV->hasPrivateLinkage() || ForcePrivate) ? PrivatePrefixTy :
GV->hasLinkerPrivateLinkage() ? LinkerPrivatePrefixTy : DefaultPrefixTy;
if (GV->hasName())
return makeNameProper(GV->getName() + Suffix,
GV->hasPrivateLinkage() | ForcePrivate);
return makeNameProper(GV->getName() + Suffix, PrefixTy);
// Get the ID for the global, assigning a new one if we haven't got one
// already.
@ -139,12 +154,13 @@ std::string Mangler::getMangledName(const GlobalValue *GV, const char *Suffix,
if (ID == 0) ID = NextAnonGlobalID++;
// Must mangle the global into a unique ID.
return makeNameProper("__unnamed_" + utostr(ID) + Suffix,
GV->hasPrivateLinkage() | ForcePrivate);
return makeNameProper("__unnamed_" + utostr(ID) + Suffix, PrefixTy);
}
Mangler::Mangler(Module &M, const char *prefix, const char *privatePrefix)
: Prefix(prefix), PrivatePrefix (privatePrefix), UseQuotes(false),
Mangler::Mangler(Module &M, const char *prefix, const char *privatePrefix,
const char *linkerPrivatePrefix)
: Prefix(prefix), PrivatePrefix(privatePrefix),
LinkerPrivatePrefix(linkerPrivatePrefix), UseQuotes(false),
NextAnonGlobalID(1) {
std::fill(AcceptableChars, array_endof(AcceptableChars), 0);

3
tools/llvm-nm/llvm-nm.cpp
View File

@ -88,7 +88,8 @@ static char TypeCharForSymbol(GlobalValue &GV) {
static void DumpSymbolNameForGlobalValue(GlobalValue &GV) {
// Private linkage and available_externally linkage don't exist in symtab.
if (GV.hasPrivateLinkage() || GV.hasAvailableExternallyLinkage()) return;
if (GV.hasPrivateLinkage() || GV.hasLinkerPrivateLinkage() ||
GV.hasAvailableExternallyLinkage()) return;
const std::string SymbolAddrStr = " "; // Not used yet...
char TypeChar = TypeCharForSymbol(GV);