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-rw-r--r--lib/LTO/LLVMBuild.txt2
-rw-r--r--lib/LTO/LTOCodeGenerator.cpp34
-rw-r--r--lib/LTO/LTOModule.cpp486
3 files changed, 139 insertions, 383 deletions
diff --git a/lib/LTO/LLVMBuild.txt b/lib/LTO/LLVMBuild.txt
index c9b5212..29ed92c 100644
--- a/lib/LTO/LLVMBuild.txt
+++ b/lib/LTO/LLVMBuild.txt
@@ -19,4 +19,4 @@
type = Library
name = LTO
parent = Libraries
-required_libraries = BitReader BitWriter Core IPA IPO InstCombine Linker MC MCParser ObjCARC Scalar Support Target TransformUtils
+required_libraries = BitReader BitWriter Core IPA IPO InstCombine Linker MC MCParser ObjCARC Object Scalar Support Target TransformUtils
diff --git a/lib/LTO/LTOCodeGenerator.cpp b/lib/LTO/LTOCodeGenerator.cpp
index 99236bd..335197a 100644
--- a/lib/LTO/LTOCodeGenerator.cpp
+++ b/lib/LTO/LTOCodeGenerator.cpp
@@ -44,7 +44,6 @@
#include "llvm/Support/TargetSelect.h"
#include "llvm/Support/ToolOutputFile.h"
#include "llvm/Support/raw_ostream.h"
-#include "llvm/Support/system_error.h"
#include "llvm/Target/TargetLibraryInfo.h"
#include "llvm/Target/TargetLowering.h"
#include "llvm/Target/TargetOptions.h"
@@ -52,6 +51,7 @@
#include "llvm/Transforms/IPO.h"
#include "llvm/Transforms/IPO/PassManagerBuilder.h"
#include "llvm/Transforms/ObjCARC.h"
+#include <system_error>
using namespace llvm;
const char* LTOCodeGenerator::getVersionString() {
@@ -114,7 +114,7 @@ void LTOCodeGenerator::initializeLTOPasses() {
}
bool LTOCodeGenerator::addModule(LTOModule* mod, std::string& errMsg) {
- bool ret = IRLinker.linkInModule(mod->getLLVVMModule(), &errMsg);
+ bool ret = IRLinker.linkInModule(&mod->getModule(), &errMsg);
const std::vector<const char*> &undefs = mod->getAsmUndefinedRefs();
for (int i = 0, e = undefs.size(); i != e; ++i)
@@ -124,23 +124,7 @@ bool LTOCodeGenerator::addModule(LTOModule* mod, std::string& errMsg) {
}
void LTOCodeGenerator::setTargetOptions(TargetOptions options) {
- Options.LessPreciseFPMADOption = options.LessPreciseFPMADOption;
- Options.NoFramePointerElim = options.NoFramePointerElim;
- Options.AllowFPOpFusion = options.AllowFPOpFusion;
- Options.UnsafeFPMath = options.UnsafeFPMath;
- Options.NoInfsFPMath = options.NoInfsFPMath;
- Options.NoNaNsFPMath = options.NoNaNsFPMath;
- Options.HonorSignDependentRoundingFPMathOption =
- options.HonorSignDependentRoundingFPMathOption;
- Options.UseSoftFloat = options.UseSoftFloat;
- Options.FloatABIType = options.FloatABIType;
- Options.NoZerosInBSS = options.NoZerosInBSS;
- Options.GuaranteedTailCallOpt = options.GuaranteedTailCallOpt;
- Options.DisableTailCalls = options.DisableTailCalls;
- Options.StackAlignmentOverride = options.StackAlignmentOverride;
- Options.TrapFuncName = options.TrapFuncName;
- Options.PositionIndependentExecutable = options.PositionIndependentExecutable;
- Options.UseInitArray = options.UseInitArray;
+ Options = options;
}
void LTOCodeGenerator::setDebugInfo(lto_debug_model debug) {
@@ -208,7 +192,8 @@ bool LTOCodeGenerator::compile_to_file(const char** name,
// make unique temp .o file to put generated object file
SmallString<128> Filename;
int FD;
- error_code EC = sys::fs::createTemporaryFile("lto-llvm", "o", FD, Filename);
+ std::error_code EC =
+ sys::fs::createTemporaryFile("lto-llvm", "o", FD, Filename);
if (EC) {
errMsg = EC.message();
return false;
@@ -251,13 +236,14 @@ const void* LTOCodeGenerator::compile(size_t* length,
delete NativeObjectFile;
// read .o file into memory buffer
- std::unique_ptr<MemoryBuffer> BuffPtr;
- if (error_code ec = MemoryBuffer::getFile(name, BuffPtr, -1, false)) {
- errMsg = ec.message();
+ ErrorOr<std::unique_ptr<MemoryBuffer>> BufferOrErr =
+ MemoryBuffer::getFile(name, -1, false);
+ if (std::error_code EC = BufferOrErr.getError()) {
+ errMsg = EC.message();
sys::fs::remove(NativeObjectPath);
return nullptr;
}
- NativeObjectFile = BuffPtr.release();
+ NativeObjectFile = BufferOrErr.get().release();
// remove temp files
sys::fs::remove(NativeObjectPath);
diff --git a/lib/LTO/LTOModule.cpp b/lib/LTO/LTOModule.cpp
index d117514..844c0f2 100644
--- a/lib/LTO/LTOModule.cpp
+++ b/lib/LTO/LTOModule.cpp
@@ -24,7 +24,6 @@
#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"
@@ -37,21 +36,16 @@
#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"
+#include <system_error>
using namespace llvm;
-LTOModule::LTOModule(llvm::Module *m, llvm::TargetMachine *t)
- : _module(m), _target(t),
- _context(_target->getMCAsmInfo(), _target->getRegisterInfo(), &ObjFileInfo),
- _mangler(t->getDataLayout()) {
- ObjFileInfo.InitMCObjectFileInfo(t->getTargetTriple(),
- t->getRelocationModel(), t->getCodeModel(),
- _context);
-}
+LTOModule::LTOModule(std::unique_ptr<object::IRObjectFile> Obj,
+ llvm::TargetMachine *TM)
+ : IRFile(std::move(Obj)), _target(TM) {}
/// isBitcodeFile - Returns 'true' if the file (or memory contents) is LLVM
/// bitcode.
@@ -67,87 +61,63 @@ bool LTOModule::isBitcodeFile(const char *path) {
return type == sys::fs::file_magic::bitcode;
}
-/// isBitcodeFileForTarget - Returns 'true' if the file (or memory contents) is
-/// LLVM bitcode for the specified triple.
-bool LTOModule::isBitcodeFileForTarget(const void *mem, size_t length,
- const char *triplePrefix) {
- MemoryBuffer *buffer = makeBuffer(mem, length);
- if (!buffer)
- return false;
- return isTargetMatch(buffer, triplePrefix);
-}
-
-bool LTOModule::isBitcodeFileForTarget(const char *path,
- const char *triplePrefix) {
- std::unique_ptr<MemoryBuffer> buffer;
- if (MemoryBuffer::getFile(path, buffer))
- return false;
- return isTargetMatch(buffer.release(), triplePrefix);
-}
-
-/// isTargetMatch - Returns 'true' if the memory buffer is for the specified
-/// target triple.
-bool LTOModule::isTargetMatch(MemoryBuffer *buffer, const char *triplePrefix) {
+bool LTOModule::isBitcodeForTarget(MemoryBuffer *buffer,
+ StringRef triplePrefix) {
std::string Triple = getBitcodeTargetTriple(buffer, getGlobalContext());
- delete buffer;
- return strncmp(Triple.c_str(), triplePrefix, strlen(triplePrefix)) == 0;
+ return StringRef(Triple).startswith(triplePrefix);
}
-/// makeLTOModule - Create an LTOModule. N.B. These methods take ownership of
-/// the buffer.
-LTOModule *LTOModule::makeLTOModule(const char *path, TargetOptions options,
- std::string &errMsg) {
- std::unique_ptr<MemoryBuffer> buffer;
- if (error_code ec = MemoryBuffer::getFile(path, buffer)) {
- errMsg = ec.message();
+LTOModule *LTOModule::createFromFile(const char *path, TargetOptions options,
+ std::string &errMsg) {
+ ErrorOr<std::unique_ptr<MemoryBuffer>> BufferOrErr =
+ MemoryBuffer::getFile(path);
+ if (std::error_code EC = BufferOrErr.getError()) {
+ errMsg = EC.message();
return nullptr;
}
- return makeLTOModule(buffer.release(), options, errMsg);
+ return makeLTOModule(std::move(BufferOrErr.get()), options, errMsg);
}
-LTOModule *LTOModule::makeLTOModule(int fd, const char *path,
- size_t size, TargetOptions options,
- std::string &errMsg) {
- return makeLTOModule(fd, path, size, 0, options, errMsg);
+LTOModule *LTOModule::createFromOpenFile(int fd, const char *path, size_t size,
+ TargetOptions options,
+ std::string &errMsg) {
+ return createFromOpenFileSlice(fd, path, size, 0, options, errMsg);
}
-LTOModule *LTOModule::makeLTOModule(int fd, const char *path,
- size_t map_size,
- off_t offset,
- TargetOptions options,
- std::string &errMsg) {
- std::unique_ptr<MemoryBuffer> buffer;
- if (error_code ec =
- MemoryBuffer::getOpenFileSlice(fd, path, buffer, map_size, offset)) {
- errMsg = ec.message();
+LTOModule *LTOModule::createFromOpenFileSlice(int fd, const char *path,
+ size_t map_size, off_t offset,
+ TargetOptions options,
+ std::string &errMsg) {
+ ErrorOr<std::unique_ptr<MemoryBuffer>> BufferOrErr =
+ MemoryBuffer::getOpenFileSlice(fd, path, map_size, offset);
+ if (std::error_code EC = BufferOrErr.getError()) {
+ errMsg = EC.message();
return nullptr;
}
- return makeLTOModule(buffer.release(), options, errMsg);
+ return makeLTOModule(std::move(BufferOrErr.get()), options, errMsg);
}
-LTOModule *LTOModule::makeLTOModule(const void *mem, size_t length,
- TargetOptions options,
- std::string &errMsg, StringRef path) {
+LTOModule *LTOModule::createFromBuffer(const void *mem, size_t length,
+ TargetOptions options,
+ std::string &errMsg, StringRef path) {
std::unique_ptr<MemoryBuffer> buffer(makeBuffer(mem, length, path));
if (!buffer)
return nullptr;
- return makeLTOModule(buffer.release(), options, errMsg);
+ return makeLTOModule(std::move(buffer), options, errMsg);
}
-LTOModule *LTOModule::makeLTOModule(MemoryBuffer *buffer,
+LTOModule *LTOModule::makeLTOModule(std::unique_ptr<MemoryBuffer> Buffer,
TargetOptions options,
std::string &errMsg) {
- // parse bitcode buffer
- ErrorOr<Module *> ModuleOrErr =
- getLazyBitcodeModule(buffer, getGlobalContext());
- if (error_code EC = ModuleOrErr.getError()) {
+ ErrorOr<Module *> MOrErr =
+ getLazyBitcodeModule(Buffer.get(), getGlobalContext());
+ if (std::error_code EC = MOrErr.getError()) {
errMsg = EC.message();
- delete buffer;
return nullptr;
}
- std::unique_ptr<Module> m(ModuleOrErr.get());
+ std::unique_ptr<Module> M(MOrErr.get());
- std::string TripleStr = m->getTargetTriple();
+ std::string TripleStr = M->getTargetTriple();
if (TripleStr.empty())
TripleStr = sys::getDefaultTargetTriple();
llvm::Triple Triple(TripleStr);
@@ -175,18 +145,13 @@ LTOModule *LTOModule::makeLTOModule(MemoryBuffer *buffer,
TargetMachine *target = march->createTargetMachine(TripleStr, CPU, FeatureStr,
options);
- m->materializeAllPermanently();
+ M->materializeAllPermanently(true);
+ M->setDataLayout(target->getDataLayout());
- LTOModule *Ret = new LTOModule(m.release(), target);
+ std::unique_ptr<object::IRObjectFile> IRObj(
+ new object::IRObjectFile(std::move(Buffer), std::move(M)));
- // 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(std::move(IRObj), target);
if (Ret->parseSymbols(errMsg)) {
delete Ret;
@@ -305,10 +270,20 @@ void LTOModule::addObjCClassRef(const GlobalVariable *clgv) {
entry.setValue(info);
}
-/// addDefinedDataSymbol - Add a data symbol as defined to the list.
-void LTOModule::addDefinedDataSymbol(const GlobalValue *v) {
+void LTOModule::addDefinedDataSymbol(const object::BasicSymbolRef &Sym) {
+ SmallString<64> Buffer;
+ {
+ raw_svector_ostream OS(Buffer);
+ Sym.printName(OS);
+ }
+
+ const GlobalValue *V = IRFile->getSymbolGV(Sym.getRawDataRefImpl());
+ addDefinedDataSymbol(Buffer.c_str(), V);
+}
+
+void LTOModule::addDefinedDataSymbol(const char *Name, const GlobalValue *v) {
// Add to list of defined symbols.
- addDefinedSymbol(v, false);
+ addDefinedSymbol(Name, v, false);
if (!v->hasSection() /* || !isTargetDarwin */)
return;
@@ -334,31 +309,43 @@ void LTOModule::addDefinedDataSymbol(const GlobalValue *v) {
// from the ObjC data structures generated by the front end.
// special case if this data blob is an ObjC class definition
- if (v->getSection().compare(0, 15, "__OBJC,__class,") == 0) {
+ std::string Section = v->getSection();
+ if (Section.compare(0, 15, "__OBJC,__class,") == 0) {
if (const GlobalVariable *gv = dyn_cast<GlobalVariable>(v)) {
addObjCClass(gv);
}
}
// special case if this data blob is an ObjC category definition
- else if (v->getSection().compare(0, 18, "__OBJC,__category,") == 0) {
+ else if (Section.compare(0, 18, "__OBJC,__category,") == 0) {
if (const GlobalVariable *gv = dyn_cast<GlobalVariable>(v)) {
addObjCCategory(gv);
}
}
// special case if this data blob is the list of referenced classes
- else if (v->getSection().compare(0, 18, "__OBJC,__cls_refs,") == 0) {
+ else if (Section.compare(0, 18, "__OBJC,__cls_refs,") == 0) {
if (const GlobalVariable *gv = dyn_cast<GlobalVariable>(v)) {
addObjCClassRef(gv);
}
}
}
-/// addDefinedFunctionSymbol - Add a function symbol as defined to the list.
-void LTOModule::addDefinedFunctionSymbol(const Function *f) {
+void LTOModule::addDefinedFunctionSymbol(const object::BasicSymbolRef &Sym) {
+ SmallString<64> Buffer;
+ {
+ raw_svector_ostream OS(Buffer);
+ Sym.printName(OS);
+ }
+
+ const Function *F =
+ cast<Function>(IRFile->getSymbolGV(Sym.getRawDataRefImpl()));
+ addDefinedFunctionSymbol(Buffer.c_str(), F);
+}
+
+void LTOModule::addDefinedFunctionSymbol(const char *Name, const Function *F) {
// add to list of defined symbols
- addDefinedSymbol(f, true);
+ addDefinedSymbol(Name, F, true);
}
static bool canBeHidden(const GlobalValue *GV) {
@@ -385,16 +372,8 @@ static bool canBeHidden(const GlobalValue *GV) {
return !GS.IsCompared;
}
-/// addDefinedSymbol - Add a defined symbol to the list.
-void LTOModule::addDefinedSymbol(const GlobalValue *def, bool isFunction) {
- // ignore all llvm.* symbols
- if (def->getName().startswith("llvm."))
- return;
-
- // string is owned by _defines
- SmallString<64> Buffer;
- _target->getNameWithPrefix(Buffer, def, _mangler);
-
+void LTOModule::addDefinedSymbol(const char *Name, const GlobalValue *def,
+ bool isFunction) {
// set alignment part log2() can have rounding errors
uint32_t align = def->getAlignment();
uint32_t attr = align ? countTrailingZeros(align) : 0;
@@ -431,14 +410,14 @@ void LTOModule::addDefinedSymbol(const GlobalValue *def, bool isFunction) {
else
attr |= LTO_SYMBOL_SCOPE_DEFAULT;
- StringSet::value_type &entry = _defines.GetOrCreateValue(Buffer);
+ StringSet::value_type &entry = _defines.GetOrCreateValue(Name);
entry.setValue(1);
// fill information structure
NameAndAttributes info;
- StringRef Name = entry.getKey();
- info.name = Name.data();
- assert(info.name[Name.size()] == '\0');
+ StringRef NameRef = entry.getKey();
+ info.name = NameRef.data();
+ assert(info.name[NameRef.size()] == '\0');
info.attributes = attr;
info.isFunction = isFunction;
info.symbol = def;
@@ -483,9 +462,9 @@ void LTOModule::addAsmGlobalSymbol(const char *name,
}
if (info.isFunction)
- addDefinedFunctionSymbol(cast<Function>(info.symbol));
+ addDefinedFunctionSymbol(info.name, cast<Function>(info.symbol));
else
- addDefinedDataSymbol(info.symbol);
+ addDefinedDataSymbol(info.name, info.symbol);
_symbols.back().attributes &= ~LTO_SYMBOL_SCOPE_MASK;
_symbols.back().attributes |= scope;
@@ -514,20 +493,14 @@ void LTOModule::addAsmGlobalSymbolUndef(const char *name) {
entry.setValue(info);
}
-/// addPotentialUndefinedSymbol - Add a symbol which isn't defined just yet to a
-/// list to be resolved later.
-void
-LTOModule::addPotentialUndefinedSymbol(const GlobalValue *decl, bool isFunc) {
- // ignore all llvm.* symbols
- if (decl->getName().startswith("llvm."))
- return;
-
- // ignore all aliases
- if (isa<GlobalAlias>(decl))
- return;
-
+/// Add a symbol which isn't defined just yet to a list to be resolved later.
+void LTOModule::addPotentialUndefinedSymbol(const object::BasicSymbolRef &Sym,
+ bool isFunc) {
SmallString<64> name;
- _target->getNameWithPrefix(name, decl, _mangler);
+ {
+ raw_svector_ostream OS(name);
+ Sym.printName(OS);
+ }
StringMap<NameAndAttributes>::value_type &entry =
_undefines.GetOrCreateValue(name);
@@ -540,6 +513,8 @@ LTOModule::addPotentialUndefinedSymbol(const GlobalValue *decl, bool isFunc) {
info.name = entry.getKey().data();
+ const GlobalValue *decl = IRFile->getSymbolGV(Sym.getRawDataRefImpl());
+
if (decl->hasExternalWeakLinkage())
info.attributes = LTO_SYMBOL_DEFINITION_WEAKUNDEF;
else
@@ -551,259 +526,54 @@ LTOModule::addPotentialUndefinedSymbol(const GlobalValue *decl, bool isFunc) {
entry.setValue(info);
}
-namespace {
-
- class RecordStreamer : public MCStreamer {
- public:
- enum State { NeverSeen, Global, Defined, DefinedGlobal, Used };
-
- private:
- StringMap<State> Symbols;
-
- void markDefined(const MCSymbol &Symbol) {
- State &S = Symbols[Symbol.getName()];
- switch (S) {
- case DefinedGlobal:
- case Global:
- S = DefinedGlobal;
- break;
- case NeverSeen:
- case Defined:
- case Used:
- S = Defined;
- break;
- }
- }
- void markGlobal(const MCSymbol &Symbol) {
- State &S = Symbols[Symbol.getName()];
- switch (S) {
- case DefinedGlobal:
- case Defined:
- S = DefinedGlobal;
- break;
-
- case NeverSeen:
- case Global:
- case Used:
- S = Global;
- break;
- }
- }
- void markUsed(const MCSymbol &Symbol) {
- State &S = Symbols[Symbol.getName()];
- switch (S) {
- case DefinedGlobal:
- case Defined:
- case Global:
- break;
-
- case NeverSeen:
- case Used:
- S = Used;
- break;
- }
- }
-
- // FIXME: mostly copied for the obj streamer.
- void AddValueSymbols(const MCExpr *Value) {
- switch (Value->getKind()) {
- case MCExpr::Target:
- // FIXME: What should we do in here?
- break;
-
- case MCExpr::Constant:
- break;
-
- case MCExpr::Binary: {
- const MCBinaryExpr *BE = cast<MCBinaryExpr>(Value);
- AddValueSymbols(BE->getLHS());
- AddValueSymbols(BE->getRHS());
- break;
- }
-
- case MCExpr::SymbolRef:
- markUsed(cast<MCSymbolRefExpr>(Value)->getSymbol());
- break;
-
- case MCExpr::Unary:
- AddValueSymbols(cast<MCUnaryExpr>(Value)->getSubExpr());
- break;
+/// parseSymbols - Parse the symbols from the module and model-level ASM and add
+/// them to either the defined or undefined lists.
+bool LTOModule::parseSymbols(std::string &errMsg) {
+ for (auto &Sym : IRFile->symbols()) {
+ const GlobalValue *GV = IRFile->getSymbolGV(Sym.getRawDataRefImpl());
+ uint32_t Flags = Sym.getFlags();
+ if (Flags & object::BasicSymbolRef::SF_FormatSpecific)
+ continue;
+
+ bool IsUndefined = Flags & object::BasicSymbolRef::SF_Undefined;
+
+ if (!GV) {
+ SmallString<64> Buffer;
+ {
+ raw_svector_ostream OS(Buffer);
+ Sym.printName(OS);
}
+ const char *Name = Buffer.c_str();
+
+ if (IsUndefined)
+ addAsmGlobalSymbolUndef(Name);
+ else if (Flags & object::BasicSymbolRef::SF_Global)
+ addAsmGlobalSymbol(Name, LTO_SYMBOL_SCOPE_DEFAULT);
+ else
+ addAsmGlobalSymbol(Name, LTO_SYMBOL_SCOPE_INTERNAL);
+ continue;
}
- public:
- typedef StringMap<State>::const_iterator const_iterator;
-
- const_iterator begin() {
- return Symbols.begin();
+ auto *F = dyn_cast<Function>(GV);
+ if (IsUndefined) {
+ addPotentialUndefinedSymbol(Sym, F != nullptr);
+ continue;
}
- const_iterator end() {
- return Symbols.end();
+ if (F) {
+ addDefinedFunctionSymbol(Sym);
+ continue;
}
- RecordStreamer(MCContext &Context) : MCStreamer(Context) {}
-
- 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());
- }
- void EmitLabel(MCSymbol *Symbol) override {
- Symbol->setSection(*getCurrentSection().first);
- markDefined(*Symbol);
- }
- void EmitDebugLabel(MCSymbol *Symbol) override {
- EmitLabel(Symbol);
- }
- void EmitAssignment(MCSymbol *Symbol, const MCExpr *Value) override {
- // FIXME: should we handle aliases?
- markDefined(*Symbol);
- AddValueSymbols(Value);
- }
- bool EmitSymbolAttribute(MCSymbol *Symbol,
- MCSymbolAttr Attribute) override {
- if (Attribute == MCSA_Global)
- markGlobal(*Symbol);
- return true;
+ if (isa<GlobalVariable>(GV)) {
+ addDefinedDataSymbol(Sym);
+ continue;
}
- void EmitZerofill(const MCSection *Section, MCSymbol *Symbol,
- uint64_t Size , unsigned ByteAlignment) override {
- markDefined(*Symbol);
- }
- void EmitCommonSymbol(MCSymbol *Symbol, uint64_t Size,
- unsigned ByteAlignment) override {
- markDefined(*Symbol);
- }
-
- void EmitBundleAlignMode(unsigned AlignPow2) override {}
- void EmitBundleLock(bool AlignToEnd) override {}
- void EmitBundleUnlock() override {}
-
- // Noop calls.
- 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 FinishImpl() override {}
- void EmitCFIEndProcImpl(MCDwarfFrameInfo &Frame) override {
- RecordProcEnd(Frame);
- }
- };
-} // end anonymous namespace
-
-/// addAsmGlobalSymbols - Add global symbols from module-level ASM to the
-/// defined or undefined lists.
-bool LTOModule::addAsmGlobalSymbols(std::string &errMsg) {
- const std::string &inlineAsm = _module->getModuleInlineAsm();
- if (inlineAsm.empty())
- return false;
-
- std::unique_ptr<RecordStreamer> Streamer(new RecordStreamer(_context));
- MemoryBuffer *Buffer = MemoryBuffer::getMemBuffer(inlineAsm);
- SourceMgr SrcMgr;
- SrcMgr.AddNewSourceBuffer(Buffer, SMLoc());
- std::unique_ptr<MCAsmParser> Parser(
- createMCAsmParser(SrcMgr, _context, *Streamer, *_target->getMCAsmInfo()));
- const Target &T = _target->getTarget();
- 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 true;
- }
-
- Parser->setTargetParser(*TAP);
- if (Parser->Run(false))
- return true;
- for (RecordStreamer::const_iterator i = Streamer->begin(),
- e = Streamer->end(); i != e; ++i) {
- StringRef Key = i->first();
- RecordStreamer::State Value = i->second;
- if (Value == RecordStreamer::DefinedGlobal)
- addAsmGlobalSymbol(Key.data(), LTO_SYMBOL_SCOPE_DEFAULT);
- else if (Value == RecordStreamer::Defined)
- addAsmGlobalSymbol(Key.data(), LTO_SYMBOL_SCOPE_INTERNAL);
- else if (Value == RecordStreamer::Global ||
- Value == RecordStreamer::Used)
- addAsmGlobalSymbolUndef(Key.data());
+ assert(isa<GlobalAlias>(GV));
+ addDefinedDataSymbol(Sym);
}
- return false;
-}
-
-/// isDeclaration - Return 'true' if the global value is a declaration.
-static bool isDeclaration(const GlobalValue &V) {
- if (V.hasAvailableExternallyLinkage())
- return true;
-
- if (V.isMaterializable())
- return false;
-
- return V.isDeclaration();
-}
-
-/// parseSymbols - Parse the symbols from the module and model-level ASM and add
-/// them to either the defined or undefined lists.
-bool LTOModule::parseSymbols(std::string &errMsg) {
- // add functions
- for (Module::iterator f = _module->begin(), e = _module->end(); f != e; ++f) {
- if (isDeclaration(*f))
- addPotentialUndefinedSymbol(f, true);
- else
- addDefinedFunctionSymbol(f);
- }
-
- // add data
- for (Module::global_iterator v = _module->global_begin(),
- e = _module->global_end(); v != e; ++v) {
- if (isDeclaration(*v))
- addPotentialUndefinedSymbol(v, false);
- else
- addDefinedDataSymbol(v);
- }
-
- // add asm globals
- if (addAsmGlobalSymbols(errMsg))
- return true;
-
- // add aliases
- for (const auto &Alias : _module->aliases())
- addDefinedDataSymbol(&Alias);
-
// make symbols for all undefines
for (StringMap<NameAndAttributes>::iterator u =_undefines.begin(),
e = _undefines.end(); u != e; ++u) {
@@ -820,7 +590,7 @@ bool LTOModule::parseSymbols(std::string &errMsg) {
/// parseMetadata - Parse metadata from the module
void LTOModule::parseMetadata() {
// Linker Options
- if (Value *Val = _module->getModuleFlag("Linker Options")) {
+ if (Value *Val = getModule().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));
generated by cgit v1.1 at 2024-12-22 22:06:16 +0000