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rearrange X86ATTAsmPrinter::doFinalization, making a scan of 

the global variable list only happen for COFF targets.

llvm-svn: 82010
This commit is contained in:
Chris Lattner 2009-09-16 05:20:33 +00:00
parent f7ff53d4d9
commit 46dcaadb4a
2 changed files with 45 additions and 35 deletions
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70
llvm/lib/Target/X86/AsmPrinter/X86ATTAsmPrinter.cpp
View File

@ -889,13 +889,6 @@ GetSortedStubs(const DenseMap<MCSymbol*, MCSymbol*> &Map) {
}
bool X86ATTAsmPrinter::doFinalization(Module &M) {
// Print out module-level global variables here.
for (Module::const_global_iterator I = M.global_begin(), E = M.global_end();
I != E; ++I) {
if (I->hasDLLExportLinkage())
DLLExportedGVs.insert(Mang->getMangledName(I));
}
if (Subtarget->isTargetDarwin()) {
// All darwin targets use mach-o.
TargetLoweringObjectFileMachO &TLOFMacho =
@ -903,7 +896,7 @@ bool X86ATTAsmPrinter::doFinalization(Module &M) {
// Add the (possibly multiple) personalities to the set of global value
// stubs. Only referenced functions get into the Personalities list.
if (MAI->doesSupportExceptionHandling() && MMI && !Subtarget->is64Bit()) {
if (!Subtarget->is64Bit()) {
const std::vector<Function*> &Personalities = MMI->getPersonalities();
for (unsigned i = 0, e = Personalities.size(); i != e; ++i) {
if (Personalities[i] == 0)
@ -984,37 +977,46 @@ bool X86ATTAsmPrinter::doFinalization(Module &M) {
// linker can safely perform dead code stripping. Since LLVM never
// generates code that does this, it is always safe to set.
O << "\t.subsections_via_symbols\n";
} else if (Subtarget->isTargetCygMing()) {
// Emit type information for external functions
for (StringSet<>::iterator i = CygMingStubs.begin(), e = CygMingStubs.end();
i != e; ++i) {
O << "\t.def\t " << i->getKeyData()
}
if (Subtarget->isTargetCOFF()) {
for (Module::const_global_iterator I = M.global_begin(), E = M.global_end();
I != E; ++I)
if (I->hasDLLExportLinkage())
DLLExportedGVs.insert(Mang->getMangledName(I));
if (Subtarget->isTargetCygMing()) {
// Emit type information for external functions
for (StringSet<>::iterator i = CygMingStubs.begin(), e = CygMingStubs.end();
i != e; ++i) {
O << "\t.def\t " << i->getKeyData()
<< ";\t.scl\t" << COFF::C_EXT
<< ";\t.type\t" << (COFF::DT_FCN << COFF::N_BTSHFT)
<< ";\t.endef\n";
}
}
// Output linker support code for dllexported globals on windows.
if (!DLLExportedGVs.empty() || !DLLExportedFns.empty()) {
// dllexport symbols only exist on coff targets.
TargetLoweringObjectFileCOFF &TLOFCOFF =
static_cast<TargetLoweringObjectFileCOFF&>(getObjFileLowering());
OutStreamer.SwitchSection(TLOFCOFF.getCOFFSection(".section .drectve",
true,
SectionKind::getMetadata()));
for (StringSet<>::iterator i = DLLExportedGVs.begin(),
e = DLLExportedGVs.end(); i != e; ++i)
O << "\t.ascii \" -export:" << i->getKeyData() << ",data\"\n";
for (StringSet<>::iterator i = DLLExportedFns.begin(),
e = DLLExportedFns.end();
i != e; ++i)
O << "\t.ascii \" -export:" << i->getKeyData() << "\"\n";
}
}
// Output linker support code for dllexported globals on windows.
if (!DLLExportedGVs.empty() || !DLLExportedFns.empty()) {
// dllexport symbols only exist on coff targets.
TargetLoweringObjectFileCOFF &TLOFMacho =
static_cast<TargetLoweringObjectFileCOFF&>(getObjFileLowering());
OutStreamer.SwitchSection(TLOFMacho.getCOFFSection(".section .drectve",true,
SectionKind::getMetadata()));
for (StringSet<>::iterator i = DLLExportedGVs.begin(),
e = DLLExportedGVs.end(); i != e; ++i)
O << "\t.ascii \" -export:" << i->getKeyData() << ",data\"\n";
for (StringSet<>::iterator i = DLLExportedFns.begin(),
e = DLLExportedFns.end();
i != e; ++i)
O << "\t.ascii \" -export:" << i->getKeyData() << "\"\n";
}
// Do common shutdown.
return AsmPrinter::doFinalization(M);
}

10
llvm/lib/Target/X86/X86Subtarget.h
View File

@ -148,12 +148,20 @@ public:
bool isTargetDarwin() const { return TargetType == isDarwin; }
bool isTargetELF() const { return TargetType == isELF; }
bool isTargetWindows() const { return TargetType == isWindows; }
bool isTargetMingw() const { return TargetType == isMingw; }
bool isTargetCygwin() const { return TargetType == isCygwin; }
bool isTargetCygMing() const {
return TargetType == isMingw || TargetType == isCygwin;
}
bool isTargetCygwin() const { return TargetType == isCygwin; }
/// isTargetCOFF - Return true if this is any COFF/Windows target variant.
bool isTargetCOFF() const {
return TargetType == isMingw || TargetType == isCygwin ||
TargetType == isWindows;
}
bool isTargetWin64() const {
return Is64Bit && (TargetType == isMingw || TargetType == isWindows);
}