//===----------------------------------------------------------------------===//
#include "llvm/LTO/LTOModule.h"
-#include "llvm/ADT/OwningPtr.h"
#include "llvm/ADT/Triple.h"
#include "llvm/Bitcode/ReaderWriter.h"
#include "llvm/IR/Constants.h"
#include "llvm/IR/LLVMContext.h"
+#include "llvm/IR/Metadata.h"
#include "llvm/IR/Module.h"
#include "llvm/MC/MCExpr.h"
#include "llvm/MC/MCInst.h"
#include "llvm/MC/MCInstrInfo.h"
#include "llvm/MC/MCParser/MCAsmParser.h"
+#include "llvm/MC/MCSection.h"
#include "llvm/MC/MCStreamer.h"
#include "llvm/MC/MCSubtargetInfo.h"
#include "llvm/MC/MCSymbol.h"
#include "llvm/MC/MCTargetAsmParser.h"
#include "llvm/MC/SubtargetFeature.h"
#include "llvm/Support/CommandLine.h"
-#include "llvm/Support/Host.h"
#include "llvm/Support/FileSystem.h"
+#include "llvm/Support/Host.h"
#include "llvm/Support/MemoryBuffer.h"
#include "llvm/Support/Path.h"
#include "llvm/Support/SourceMgr.h"
#include "llvm/Support/TargetRegistry.h"
#include "llvm/Support/TargetSelect.h"
#include "llvm/Support/system_error.h"
+#include "llvm/Target/TargetLowering.h"
+#include "llvm/Target/TargetLoweringObjectFile.h"
#include "llvm/Target/TargetRegisterInfo.h"
#include "llvm/Transforms/Utils/GlobalStatus.h"
using namespace llvm;
LTOModule::LTOModule(llvm::Module *m, llvm::TargetMachine *t)
: _module(m), _target(t),
- _context(_target->getMCAsmInfo(), _target->getRegisterInfo(), NULL),
- _mangler(t) {}
+ _context(_target->getMCAsmInfo(), _target->getRegisterInfo(), &ObjFileInfo),
+ _mangler(t->getDataLayout()) {
+ ObjFileInfo.InitMCObjectFileInfo(t->getTargetTriple(),
+ t->getRelocationModel(), t->getCodeModel(),
+ _context);
+}
/// isBitcodeFile - Returns 'true' if the file (or memory contents) is LLVM
/// bitcode.
bool LTOModule::isBitcodeFileForTarget(const char *path,
const char *triplePrefix) {
- OwningPtr<MemoryBuffer> buffer;
+ std::unique_ptr<MemoryBuffer> buffer;
if (MemoryBuffer::getFile(path, buffer))
return false;
- return isTargetMatch(buffer.take(), triplePrefix);
+ return isTargetMatch(buffer.release(), triplePrefix);
}
/// isTargetMatch - Returns 'true' if the memory buffer is for the specified
/// the buffer.
LTOModule *LTOModule::makeLTOModule(const char *path, TargetOptions options,
std::string &errMsg) {
- OwningPtr<MemoryBuffer> buffer;
+ std::unique_ptr<MemoryBuffer> buffer;
if (error_code ec = MemoryBuffer::getFile(path, buffer)) {
errMsg = ec.message();
- return NULL;
+ return nullptr;
}
- return makeLTOModule(buffer.take(), options, errMsg);
+ return makeLTOModule(buffer.release(), options, errMsg);
}
LTOModule *LTOModule::makeLTOModule(int fd, const char *path,
off_t offset,
TargetOptions options,
std::string &errMsg) {
- OwningPtr<MemoryBuffer> buffer;
+ std::unique_ptr<MemoryBuffer> buffer;
if (error_code ec =
MemoryBuffer::getOpenFileSlice(fd, path, buffer, map_size, offset)) {
errMsg = ec.message();
- return NULL;
+ return nullptr;
}
- return makeLTOModule(buffer.take(), options, errMsg);
+ return makeLTOModule(buffer.release(), options, errMsg);
}
LTOModule *LTOModule::makeLTOModule(const void *mem, size_t length,
TargetOptions options,
- std::string &errMsg) {
- OwningPtr<MemoryBuffer> buffer(makeBuffer(mem, length));
+ std::string &errMsg, StringRef path) {
+ std::unique_ptr<MemoryBuffer> buffer(makeBuffer(mem, length, path));
if (!buffer)
- return NULL;
- return makeLTOModule(buffer.take(), options, errMsg);
+ return nullptr;
+ return makeLTOModule(buffer.release(), options, errMsg);
}
LTOModule *LTOModule::makeLTOModule(MemoryBuffer *buffer,
TargetOptions options,
std::string &errMsg) {
// parse bitcode buffer
- OwningPtr<Module> m(getLazyBitcodeModule(buffer, getGlobalContext(),
- &errMsg));
- if (!m) {
+ ErrorOr<Module *> ModuleOrErr =
+ getLazyBitcodeModule(buffer, getGlobalContext());
+ if (error_code EC = ModuleOrErr.getError()) {
+ errMsg = EC.message();
delete buffer;
- return NULL;
+ return nullptr;
}
+ std::unique_ptr<Module> m(ModuleOrErr.get());
std::string TripleStr = m->getTargetTriple();
if (TripleStr.empty())
// find machine architecture for this module
const Target *march = TargetRegistry::lookupTarget(TripleStr, errMsg);
if (!march)
- return NULL;
+ return nullptr;
// construct LTOModule, hand over ownership of module and target
SubtargetFeatures Features;
CPU = "core2";
else if (Triple.getArch() == llvm::Triple::x86)
CPU = "yonah";
+ else if (Triple.getArch() == llvm::Triple::arm64)
+ CPU = "cyclone";
}
TargetMachine *target = march->createTargetMachine(TripleStr, CPU, FeatureStr,
options);
- m->MaterializeAllPermanently();
+ m->materializeAllPermanently();
+
+ LTOModule *Ret = new LTOModule(m.release(), target);
+
+ // We need a MCContext set up in order to get mangled names of private
+ // symbols. It is a bit odd that we need to report uses and definitions
+ // of private symbols, but it does look like ld64 expects to be informed
+ // of at least the ones with an 'l' prefix.
+ MCContext &Context = Ret->_context;
+ const TargetLoweringObjectFile &TLOF =
+ target->getTargetLowering()->getObjFileLowering();
+ const_cast<TargetLoweringObjectFile &>(TLOF).Initialize(Context, *target);
- LTOModule *Ret = new LTOModule(m.take(), target);
if (Ret->parseSymbols(errMsg)) {
delete Ret;
- return NULL;
+ return nullptr;
}
+ Ret->parseMetadata();
+
return Ret;
}
-/// makeBuffer - Create a MemoryBuffer from a memory range.
-MemoryBuffer *LTOModule::makeBuffer(const void *mem, size_t length) {
+/// Create a MemoryBuffer from a memory range with an optional name.
+MemoryBuffer *LTOModule::makeBuffer(const void *mem, size_t length,
+ StringRef name) {
const char *startPtr = (const char*)mem;
- return MemoryBuffer::getMemBuffer(StringRef(startPtr, length), "", false);
+ return MemoryBuffer::getMemBuffer(StringRef(startPtr, length), name, false);
}
/// objcClassNameFromExpression - Get string that the data pointer points to.
}
static bool canBeHidden(const GlobalValue *GV) {
+ // FIXME: this is duplicated with another static function in AsmPrinter.cpp
GlobalValue::LinkageTypes L = GV->getLinkage();
if (L != GlobalValue::LinkOnceODRLinkage)
if (GV->hasUnnamedAddr())
return true;
+ // If it is a non constant variable, it needs to be uniqued across shared
+ // objects.
+ if (const GlobalVariable *Var = dyn_cast<GlobalVariable>(GV)) {
+ if (!Var->isConstant())
+ return false;
+ }
+
GlobalStatus GS;
if (GlobalStatus::analyzeGlobal(GV, GS))
return false;
// string is owned by _defines
SmallString<64> Buffer;
- _mangler.getNameWithPrefix(Buffer, def, false);
+ _target->getNameWithPrefix(Buffer, def, _mangler);
// set alignment part log2() can have rounding errors
uint32_t align = def->getAlignment();
}
// set definition part
- if (def->hasWeakLinkage() || def->hasLinkOnceLinkage() ||
- def->hasLinkerPrivateWeakLinkage())
+ if (def->hasWeakLinkage() || def->hasLinkOnceLinkage())
attr |= LTO_SYMBOL_DEFINITION_WEAK;
else if (def->hasCommonLinkage())
attr |= LTO_SYMBOL_DEFINITION_TENTATIVE;
else if (canBeHidden(def))
attr |= LTO_SYMBOL_SCOPE_DEFAULT_CAN_BE_HIDDEN;
else if (def->hasExternalLinkage() || def->hasWeakLinkage() ||
- def->hasLinkOnceLinkage() || def->hasCommonLinkage() ||
- def->hasLinkerPrivateWeakLinkage())
+ def->hasLinkOnceLinkage() || def->hasCommonLinkage())
attr |= LTO_SYMBOL_SCOPE_DEFAULT;
else
attr |= LTO_SYMBOL_SCOPE_INTERNAL;
NameAndAttributes &info = _undefines[entry.getKey().data()];
- if (info.symbol == 0) {
+ if (info.symbol == nullptr) {
// FIXME: This is trying to take care of module ASM like this:
//
// module asm ".zerofill __FOO, __foo, _bar_baz_qux, 0"
info.attributes =
LTO_SYMBOL_PERMISSIONS_DATA | LTO_SYMBOL_DEFINITION_REGULAR | scope;
info.isFunction = false;
- info.symbol = 0;
+ info.symbol = nullptr;
// add to table of symbols
_symbols.push_back(info);
if (entry.getValue().name)
return;
- uint32_t attr = LTO_SYMBOL_DEFINITION_UNDEFINED;;
+ uint32_t attr = LTO_SYMBOL_DEFINITION_UNDEFINED;
attr |= LTO_SYMBOL_SCOPE_DEFAULT;
NameAndAttributes info;
info.name = entry.getKey().data();
info.attributes = attr;
info.isFunction = false;
- info.symbol = 0;
+ info.symbol = nullptr;
entry.setValue(info);
}
return;
SmallString<64> name;
- _mangler.getNameWithPrefix(name, decl, false);
+ _target->getNameWithPrefix(name, decl, _mangler);
StringMap<NameAndAttributes>::value_type &entry =
_undefines.GetOrCreateValue(name);
}
namespace {
+
class RecordStreamer : public MCStreamer {
public:
enum State { NeverSeen, Global, Defined, DefinedGlobal, Used };
return Symbols.end();
}
- RecordStreamer(MCContext &Context) : MCStreamer(Context, 0) {}
+ RecordStreamer(MCContext &Context) : MCStreamer(Context) {}
- virtual void EmitInstruction(const MCInst &Inst) {
+ void EmitInstruction(const MCInst &Inst,
+ const MCSubtargetInfo &STI) override {
// Scan for values.
for (unsigned i = Inst.getNumOperands(); i--; )
if (Inst.getOperand(i).isExpr())
AddValueSymbols(Inst.getOperand(i).getExpr());
}
- virtual void EmitLabel(MCSymbol *Symbol) {
+ void EmitLabel(MCSymbol *Symbol) override {
Symbol->setSection(*getCurrentSection().first);
markDefined(*Symbol);
}
- virtual void EmitDebugLabel(MCSymbol *Symbol) {
+ void EmitDebugLabel(MCSymbol *Symbol) override {
EmitLabel(Symbol);
}
- virtual void EmitAssignment(MCSymbol *Symbol, const MCExpr *Value) {
+ void EmitAssignment(MCSymbol *Symbol, const MCExpr *Value) override {
// FIXME: should we handle aliases?
markDefined(*Symbol);
+ AddValueSymbols(Value);
}
- virtual bool EmitSymbolAttribute(MCSymbol *Symbol, MCSymbolAttr Attribute) {
+ bool EmitSymbolAttribute(MCSymbol *Symbol,
+ MCSymbolAttr Attribute) override {
if (Attribute == MCSA_Global)
markGlobal(*Symbol);
return true;
}
- virtual void EmitZerofill(const MCSection *Section, MCSymbol *Symbol,
- uint64_t Size , unsigned ByteAlignment) {
+ void EmitZerofill(const MCSection *Section, MCSymbol *Symbol,
+ uint64_t Size , unsigned ByteAlignment) override {
markDefined(*Symbol);
}
- virtual void EmitCommonSymbol(MCSymbol *Symbol, uint64_t Size,
- unsigned ByteAlignment) {
+ void EmitCommonSymbol(MCSymbol *Symbol, uint64_t Size,
+ unsigned ByteAlignment) override {
markDefined(*Symbol);
}
- virtual void EmitBundleAlignMode(unsigned AlignPow2) {}
- virtual void EmitBundleLock(bool AlignToEnd) {}
- virtual void EmitBundleUnlock() {}
+ void EmitBundleAlignMode(unsigned AlignPow2) override {}
+ void EmitBundleLock(bool AlignToEnd) override {}
+ void EmitBundleUnlock() override {}
// Noop calls.
- virtual void ChangeSection(const MCSection *Section,
- const MCExpr *Subsection) {}
- virtual void InitToTextSection() {}
- virtual void InitSections() {}
- virtual void EmitAssemblerFlag(MCAssemblerFlag Flag) {}
- virtual void EmitThumbFunc(MCSymbol *Func) {}
- virtual void EmitSymbolDesc(MCSymbol *Symbol, unsigned DescValue) {}
- virtual void EmitWeakReference(MCSymbol *Alias, const MCSymbol *Symbol) {}
- virtual void BeginCOFFSymbolDef(const MCSymbol *Symbol) {}
- virtual void EmitCOFFSymbolStorageClass(int StorageClass) {}
- virtual void EmitCOFFSymbolType(int Type) {}
- virtual void EndCOFFSymbolDef() {}
- virtual void EmitELFSize(MCSymbol *Symbol, const MCExpr *Value) {}
- virtual void EmitLocalCommonSymbol(MCSymbol *Symbol, uint64_t Size,
- unsigned ByteAlignment) {}
- virtual void EmitTBSSSymbol(const MCSection *Section, MCSymbol *Symbol,
- uint64_t Size, unsigned ByteAlignment) {}
- virtual void EmitBytes(StringRef Data) {}
- virtual void EmitValueImpl(const MCExpr *Value, unsigned Size) {}
- virtual void EmitULEB128Value(const MCExpr *Value) {}
- virtual void EmitSLEB128Value(const MCExpr *Value) {}
- virtual void EmitValueToAlignment(unsigned ByteAlignment, int64_t Value,
- unsigned ValueSize,
- unsigned MaxBytesToEmit) {}
- virtual void EmitCodeAlignment(unsigned ByteAlignment,
- unsigned MaxBytesToEmit) {}
- virtual bool EmitValueToOffset(const MCExpr *Offset,
- unsigned char Value ) { return false; }
- virtual void EmitFileDirective(StringRef Filename) {}
- virtual void EmitDwarfAdvanceLineAddr(int64_t LineDelta,
- const MCSymbol *LastLabel,
- const MCSymbol *Label,
- unsigned PointerSize) {}
- virtual void FinishImpl() {}
- virtual void EmitCFIEndProcImpl(MCDwarfFrameInfo &Frame) {
+ void ChangeSection(const MCSection *Section,
+ const MCExpr *Subsection) override {}
+ void EmitAssemblerFlag(MCAssemblerFlag Flag) override {}
+ void EmitThumbFunc(MCSymbol *Func) override {}
+ void EmitSymbolDesc(MCSymbol *Symbol, unsigned DescValue) override {}
+ void EmitWeakReference(MCSymbol *Alias, const MCSymbol *Symbol) override {}
+ void BeginCOFFSymbolDef(const MCSymbol *Symbol) override {}
+ void EmitCOFFSymbolStorageClass(int StorageClass) override {}
+ void EmitCOFFSymbolType(int Type) override {}
+ void EndCOFFSymbolDef() override {}
+ void EmitELFSize(MCSymbol *Symbol, const MCExpr *Value) override {}
+ void EmitLocalCommonSymbol(MCSymbol *Symbol, uint64_t Size,
+ unsigned ByteAlignment) override {}
+ void EmitTBSSSymbol(const MCSection *Section, MCSymbol *Symbol,
+ uint64_t Size, unsigned ByteAlignment) override {}
+ void EmitBytes(StringRef Data) override {}
+ void EmitValueImpl(const MCExpr *Value, unsigned Size,
+ const SMLoc &Loc) override {}
+ void EmitULEB128Value(const MCExpr *Value) override {}
+ void EmitSLEB128Value(const MCExpr *Value) override {}
+ void EmitValueToAlignment(unsigned ByteAlignment, int64_t Value,
+ unsigned ValueSize,
+ unsigned MaxBytesToEmit) override {}
+ void EmitCodeAlignment(unsigned ByteAlignment,
+ unsigned MaxBytesToEmit) override {}
+ bool EmitValueToOffset(const MCExpr *Offset,
+ unsigned char Value) override { return false; }
+ void EmitFileDirective(StringRef Filename) override {}
+ void EmitDwarfAdvanceLineAddr(int64_t LineDelta, const MCSymbol *LastLabel,
+ const MCSymbol *Label,
+ unsigned PointerSize) override {}
+ void FinishImpl() override {}
+ void EmitCFIEndProcImpl(MCDwarfFrameInfo &Frame) override {
RecordProcEnd(Frame);
}
};
if (inlineAsm.empty())
return false;
- OwningPtr<RecordStreamer> Streamer(new RecordStreamer(_context));
+ std::unique_ptr<RecordStreamer> Streamer(new RecordStreamer(_context));
MemoryBuffer *Buffer = MemoryBuffer::getMemBuffer(inlineAsm);
SourceMgr SrcMgr;
SrcMgr.AddNewSourceBuffer(Buffer, SMLoc());
- OwningPtr<MCAsmParser> Parser(createMCAsmParser(SrcMgr,
- _context, *Streamer,
- *_target->getMCAsmInfo()));
+ std::unique_ptr<MCAsmParser> Parser(
+ createMCAsmParser(SrcMgr, _context, *Streamer, *_target->getMCAsmInfo()));
const Target &T = _target->getTarget();
- OwningPtr<MCInstrInfo> MCII(T.createMCInstrInfo());
- OwningPtr<MCSubtargetInfo>
- STI(T.createMCSubtargetInfo(_target->getTargetTriple(),
- _target->getTargetCPU(),
- _target->getTargetFeatureString()));
- OwningPtr<MCTargetAsmParser> TAP(T.createMCAsmParser(*STI, *Parser.get(), *MCII));
+ std::unique_ptr<MCInstrInfo> MCII(T.createMCInstrInfo());
+ std::unique_ptr<MCSubtargetInfo> STI(T.createMCSubtargetInfo(
+ _target->getTargetTriple(), _target->getTargetCPU(),
+ _target->getTargetFeatureString()));
+ std::unique_ptr<MCTargetAsmParser> TAP(
+ T.createMCAsmParser(*STI, *Parser.get(), *MCII,
+ _target->Options.MCOptions));
if (!TAP) {
errMsg = "target " + std::string(T.getName()) +
" does not define AsmParser.";
return false;
}
+
+/// parseMetadata - Parse metadata from the module
+void LTOModule::parseMetadata() {
+ // Linker Options
+ if (Value *Val = _module->getModuleFlag("Linker Options")) {
+ MDNode *LinkerOptions = cast<MDNode>(Val);
+ for (unsigned i = 0, e = LinkerOptions->getNumOperands(); i != e; ++i) {
+ MDNode *MDOptions = cast<MDNode>(LinkerOptions->getOperand(i));
+ for (unsigned ii = 0, ie = MDOptions->getNumOperands(); ii != ie; ++ii) {
+ MDString *MDOption = cast<MDString>(MDOptions->getOperand(ii));
+ StringRef Op = _linkeropt_strings.
+ GetOrCreateValue(MDOption->getString()).getKey();
+ StringRef DepLibName = _target->getTargetLowering()->
+ getObjFileLowering().getDepLibFromLinkerOpt(Op);
+ if (!DepLibName.empty())
+ _deplibs.push_back(DepLibName.data());
+ else if (!Op.empty())
+ _linkeropts.push_back(Op.data());
+ }
+ }
+ }
+
+ // Add other interesting metadata here.
+}
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