#include "llvm/Target/TargetLoweringObjectFile.h"
#include "llvm/Target/TargetOptions.h"
#include "llvm/Target/TargetRegisterInfo.h"
+#include "llvm/Transforms/Utils/GlobalStatus.h"
using namespace llvm;
static const char *const DWARFGroupName = "DWARF Emission";
OutContext(Streamer.getContext()),
OutStreamer(Streamer),
LastMI(0), LastFn(0), Counter(~0U), SetCounter(0) {
- DD = 0; DE = 0; MMI = 0; LI = 0; MF = 0;
+ DD = 0; MMI = 0; LI = 0; MF = 0;
CurrentFnSym = CurrentFnSymForSize = 0;
GCMetadataPrinters = 0;
VerboseAsm = Streamer.isVerboseAsm();
}
AsmPrinter::~AsmPrinter() {
- assert(DD == 0 && DE == 0 && "Debug/EH info didn't get finalized");
+ assert(DD == 0 && Handlers.empty() && "Debug/EH info didn't get finalized");
if (GCMetadataPrinters != 0) {
gcp_map_type &GCMap = getGCMap(GCMetadataPrinters);
OutStreamer.InitStreamer();
- Mang = new Mangler(OutContext, &TM);
+ Mang = new Mangler(&TM);
// Allow the target to emit any magic that it wants at the start of the file.
EmitStartOfAsmFile(M);
OutStreamer.AddBlankLine();
}
- if (MAI->doesSupportDebugInformation())
+ if (MAI->doesSupportDebugInformation()) {
DD = new DwarfDebug(this, &M);
+ Handlers.push_back(HandlerInfo(DD, DbgTimerName, DWARFGroupName));
+ }
+ DwarfException *DE = 0;
switch (MAI->getExceptionHandlingType()) {
case ExceptionHandling::None:
- return false;
+ break;
case ExceptionHandling::SjLj:
case ExceptionHandling::DwarfCFI:
DE = new DwarfCFIException(this);
- return false;
+ break;
case ExceptionHandling::ARM:
DE = new ARMException(this);
- return false;
+ break;
case ExceptionHandling::Win64:
DE = new Win64Exception(this);
- return false;
+ break;
}
-
- llvm_unreachable("Unknown exception type.");
+ if (DE)
+ Handlers.push_back(HandlerInfo(DE, EHTimerName, DWARFGroupName));
+ return false;
}
-void AsmPrinter::EmitLinkage(unsigned Linkage, MCSymbol *GVSym) const {
- switch ((GlobalValue::LinkageTypes)Linkage) {
+void AsmPrinter::EmitLinkage(const GlobalValue *GV, MCSymbol *GVSym) const {
+ GlobalValue::LinkageTypes Linkage = GV->getLinkage();
+ switch (Linkage) {
case GlobalValue::CommonLinkage:
case GlobalValue::LinkOnceAnyLinkage:
case GlobalValue::LinkOnceODRLinkage:
- case GlobalValue::LinkOnceODRAutoHideLinkage:
case GlobalValue::WeakAnyLinkage:
case GlobalValue::WeakODRLinkage:
case GlobalValue::LinkerPrivateWeakLinkage:
- if (MAI->getWeakDefDirective() != 0) {
+ if (MAI->hasWeakDefDirective()) {
// .globl _foo
OutStreamer.EmitSymbolAttribute(GVSym, MCSA_Global);
- if ((GlobalValue::LinkageTypes)Linkage !=
- GlobalValue::LinkOnceODRAutoHideLinkage)
+ bool CanBeHidden = false;
+
+ if (Linkage == GlobalValue::LinkOnceODRLinkage &&
+ MAI->hasWeakDefCanBeHiddenDirective()) {
+ if (GV->hasUnnamedAddr()) {
+ CanBeHidden = true;
+ } else {
+ GlobalStatus GS;
+ if (!GlobalStatus::analyzeGlobal(GV, GS) && !GS.IsCompared)
+ CanBeHidden = true;
+ }
+ }
+
+ if (!CanBeHidden)
// .weak_definition _foo
OutStreamer.EmitSymbolAttribute(GVSym, MCSA_WeakDefinition);
else
OutStreamer.EmitSymbolAttribute(GVSym, MCSA_WeakDefAutoPrivate);
- } else if (MAI->getLinkOnceDirective() != 0) {
+ } else if (MAI->hasLinkOnceDirective()) {
// .globl _foo
OutStreamer.EmitSymbolAttribute(GVSym, MCSA_Global);
//NOTE: linkonce is handled by the section the symbol was assigned to.
// .weak _foo
OutStreamer.EmitSymbolAttribute(GVSym, MCSA_Weak);
}
- break;
+ return;
case GlobalValue::DLLExportLinkage:
case GlobalValue::AppendingLinkage:
// FIXME: appending linkage variables should go into a section of
// If external or appending, declare as a global symbol.
// .globl _foo
OutStreamer.EmitSymbolAttribute(GVSym, MCSA_Global);
- break;
+ return;
case GlobalValue::PrivateLinkage:
case GlobalValue::InternalLinkage:
case GlobalValue::LinkerPrivateLinkage:
- break;
- default:
- llvm_unreachable("Unknown linkage type!");
+ return;
+ case GlobalValue::AvailableExternallyLinkage:
+ llvm_unreachable("Should never emit this");
+ case GlobalValue::DLLImportLinkage:
+ case GlobalValue::ExternalWeakLinkage:
+ llvm_unreachable("Don't know how to emit these");
}
+ llvm_unreachable("Unknown linkage type!");
}
+MCSymbol *AsmPrinter::getSymbol(const GlobalValue *GV) const {
+ return getObjFileLowering().getSymbol(*Mang, GV);
+}
/// EmitGlobalVariable - Emit the specified global variable to the .s file.
void AsmPrinter::EmitGlobalVariable(const GlobalVariable *GV) {
}
}
- MCSymbol *GVSym = Mang->getSymbol(GV);
+ MCSymbol *GVSym = getSymbol(GV);
EmitVisibility(GVSym, GV->getVisibility(), !GV->isDeclaration());
if (!GV->hasInitializer()) // External globals require no extra code.
// sections and expected to be contiguous (e.g. ObjC metadata).
unsigned AlignLog = getGVAlignmentLog2(GV, *DL);
- if (DD)
- DD->setSymbolSize(GVSym, Size);
+ for (unsigned I = 0, E = Handlers.size(); I != E; ++I) {
+ const HandlerInfo &OI = Handlers[I];
+ NamedRegionTimer T(OI.TimerName, OI.TimerGroupName, TimePassesIsEnabled);
+ OI.Handler->setSymbolSize(GVSym, Size);
+ }
// Handle common and BSS local symbols (.lcomm).
if (GVKind.isCommon() || GVKind.isBSSLocal()) {
OutStreamer.SwitchSection(TLVSect);
// Emit the linkage here.
- EmitLinkage(GV->getLinkage(), GVSym);
+ EmitLinkage(GV, GVSym);
OutStreamer.EmitLabel(GVSym);
// Three pointers in size:
// - __tlv_bootstrap - used to make sure support exists
// - spare pointer, used when mapped by the runtime
// - pointer to mangled symbol above with initializer
- unsigned PtrSize = DL->getPointerSizeInBits()/8;
+ unsigned PtrSize = DL->getPointerTypeSize(GV->getType());
OutStreamer.EmitSymbolValue(GetExternalSymbolSymbol("_tlv_bootstrap"),
PtrSize);
OutStreamer.EmitIntValue(0, PtrSize);
OutStreamer.SwitchSection(TheSection);
- EmitLinkage(GV->getLinkage(), GVSym);
+ EmitLinkage(GV, GVSym);
EmitAlignment(AlignLog, GV);
OutStreamer.EmitLabel(GVSym);
OutStreamer.SwitchSection(getObjFileLowering().SectionForGlobal(F, Mang, TM));
EmitVisibility(CurrentFnSym, F->getVisibility());
- EmitLinkage(F->getLinkage(), CurrentFnSym);
+ EmitLinkage(F, CurrentFnSym);
EmitAlignment(MF->getAlignment(), F);
if (MAI->hasDotTypeDotSizeDirective())
OutStreamer.EmitLabel(DeadBlockSyms[i]);
}
+ // Emit pre-function debug and/or EH information.
+ for (unsigned I = 0, E = Handlers.size(); I != E; ++I) {
+ const HandlerInfo &OI = Handlers[I];
+ NamedRegionTimer T(OI.TimerName, OI.TimerGroupName, TimePassesIsEnabled);
+ OI.Handler->beginFunction(MF);
+ }
+
// Emit the prefix data.
if (F->hasPrefixData())
EmitGlobalConstant(F->getPrefixData());
-
- // Emit pre-function debug and/or EH information.
- if (DE) {
- NamedRegionTimer T(EHTimerName, DWARFGroupName, TimePassesIsEnabled);
- DE->BeginFunction(MF);
- }
- if (DD) {
- NamedRegionTimer T(DbgTimerName, DWARFGroupName, TimePassesIsEnabled);
- DD->beginFunction(MF);
- }
}
/// EmitFunctionEntryLabel - Emit the label that is the entrypoint for the
raw_svector_ostream OS(Str);
OS << '\t' << AP.MAI->getCommentString() << "DEBUG_VALUE: ";
- // cast away const; DIetc do not take const operands for some reason.
- DIVariable V(const_cast<MDNode*>(MI->getOperand(2).getMetadata()));
+ DIVariable V(MI->getOperand(2).getMetadata());
if (V.getContext().isSubprogram()) {
StringRef Name = DISubprogram(V.getContext()).getDisplayName();
if (!Name.empty())
// Emit target-specific gunk before the function body.
EmitFunctionBodyStart();
- bool ShouldPrintDebugScopes = DD && MMI->hasDebugInfo();
+ bool ShouldPrintDebugScopes = MMI->hasDebugInfo();
// Print out code for the function.
bool HasAnyRealCode = false;
}
if (ShouldPrintDebugScopes) {
- NamedRegionTimer T(DbgTimerName, DWARFGroupName, TimePassesIsEnabled);
- DD->beginInstruction(II);
+ for (unsigned III = 0, EEE = Handlers.size(); III != EEE; ++III) {
+ const HandlerInfo &OI = Handlers[III];
+ NamedRegionTimer T(OI.TimerName, OI.TimerGroupName,
+ TimePassesIsEnabled);
+ OI.Handler->beginInstruction(II);
+ }
}
if (isVerbose())
}
if (ShouldPrintDebugScopes) {
- NamedRegionTimer T(DbgTimerName, DWARFGroupName, TimePassesIsEnabled);
- DD->endInstruction(II);
+ for (unsigned III = 0, EEE = Handlers.size(); III != EEE; ++III) {
+ const HandlerInfo &OI = Handlers[III];
+ NamedRegionTimer T(OI.TimerName, OI.TimerGroupName,
+ TimePassesIsEnabled);
+ OI.Handler->endInstruction();
+ }
}
}
}
OutStreamer.EmitELFSize(CurrentFnSym, SizeExp);
}
- // Emit post-function debug information.
- if (DD) {
- NamedRegionTimer T(DbgTimerName, DWARFGroupName, TimePassesIsEnabled);
- DD->endFunction(MF);
- }
- if (DE) {
- NamedRegionTimer T(EHTimerName, DWARFGroupName, TimePassesIsEnabled);
- DE->EndFunction();
+ // Emit post-function debug and/or EH information.
+ for (unsigned I = 0, E = Handlers.size(); I != E; ++I) {
+ const HandlerInfo &OI = Handlers[I];
+ NamedRegionTimer T(OI.TimerName, OI.TimerGroupName, TimePassesIsEnabled);
+ OI.Handler->endFunction(MF);
}
MMI->EndFunction();
if (V == GlobalValue::DefaultVisibility)
continue;
- MCSymbol *Name = Mang->getSymbol(&F);
+ MCSymbol *Name = getSymbol(&F);
EmitVisibility(Name, V, false);
}
OutStreamer.Flush();
// Finalize debug and EH information.
- if (DE) {
- {
- NamedRegionTimer T(EHTimerName, DWARFGroupName, TimePassesIsEnabled);
- DE->EndModule();
- }
- delete DE; DE = 0;
- }
- if (DD) {
- {
- NamedRegionTimer T(DbgTimerName, DWARFGroupName, TimePassesIsEnabled);
- DD->endModule();
- }
- delete DD; DD = 0;
+ for (unsigned I = 0, E = Handlers.size(); I != E; ++I) {
+ const HandlerInfo &OI = Handlers[I];
+ NamedRegionTimer T(OI.TimerName, OI.TimerGroupName,
+ TimePassesIsEnabled);
+ OI.Handler->endModule();
+ delete OI.Handler;
}
+ Handlers.clear();
+ DD = 0;
// If the target wants to know about weak references, print them all.
if (MAI->getWeakRefDirective()) {
for (Module::const_global_iterator I = M.global_begin(), E = M.global_end();
I != E; ++I) {
if (!I->hasExternalWeakLinkage()) continue;
- OutStreamer.EmitSymbolAttribute(Mang->getSymbol(I), MCSA_WeakReference);
+ OutStreamer.EmitSymbolAttribute(getSymbol(I), MCSA_WeakReference);
}
for (Module::const_iterator I = M.begin(), E = M.end(); I != E; ++I) {
if (!I->hasExternalWeakLinkage()) continue;
- OutStreamer.EmitSymbolAttribute(Mang->getSymbol(I), MCSA_WeakReference);
+ OutStreamer.EmitSymbolAttribute(getSymbol(I), MCSA_WeakReference);
}
}
OutStreamer.AddBlankLine();
for (Module::const_alias_iterator I = M.alias_begin(), E = M.alias_end();
I != E; ++I) {
- MCSymbol *Name = Mang->getSymbol(I);
+ MCSymbol *Name = getSymbol(I);
const GlobalValue *GV = I->getAliasedGlobal();
- MCSymbol *Target = Mang->getSymbol(GV);
+ if (GV->isDeclaration()) {
+ report_fatal_error(Name->getName() +
+ ": Target doesn't support aliases to declarations");
+ }
+
+ MCSymbol *Target = getSymbol(GV);
if (I->hasExternalLinkage() || !MAI->getWeakRefDirective())
OutStreamer.EmitSymbolAttribute(Name, MCSA_Global);
void AsmPrinter::SetupMachineFunction(MachineFunction &MF) {
this->MF = &MF;
// Get the function symbol.
- CurrentFnSym = Mang->getSymbol(MF.getFunction());
+ CurrentFnSym = getSymbol(MF.getFunction());
CurrentFnSymForSize = CurrentFnSym;
if (isVerbose())
const GlobalValue *GV =
dyn_cast<GlobalValue>(InitList->getOperand(i)->stripPointerCasts());
if (GV && getObjFileLowering().shouldEmitUsedDirectiveFor(GV, Mang))
- OutStreamer.EmitSymbolAttribute(Mang->getSymbol(GV), MCSA_NoDeadStrip);
+ OutStreamer.EmitSymbolAttribute(getSymbol(GV), MCSA_NoDeadStrip);
}
}
/// where the size in bytes of the directive is specified by Size and Hi/Lo
/// specify the labels. This implicitly uses .set if it is available.
void AsmPrinter::EmitLabelOffsetDifference(const MCSymbol *Hi, uint64_t Offset,
- const MCSymbol *Lo, unsigned Size)
- const {
+ const MCSymbol *Lo,
+ unsigned Size) const {
// Emit Hi+Offset - Lo
// Get the Hi+Offset expression.
OutContext);
if (!MAI->hasSetDirective())
- OutStreamer.EmitValue(Diff, 4);
+ OutStreamer.EmitValue(Diff, Size);
else {
// Otherwise, emit with .set (aka assignment).
MCSymbol *SetLabel = GetTempSymbol("set", SetCounter++);
OutStreamer.EmitAssignment(SetLabel, Diff);
- OutStreamer.EmitSymbolValue(SetLabel, 4);
+ OutStreamer.EmitSymbolValue(SetLabel, Size);
}
}
/// where the size in bytes of the directive is specified by Size and Label
/// specifies the label. This implicitly uses .set if it is available.
void AsmPrinter::EmitLabelPlusOffset(const MCSymbol *Label, uint64_t Offset,
- unsigned Size, bool IsSectionRelative)
- const {
+ unsigned Size,
+ bool IsSectionRelative) const {
if (MAI->needsDwarfSectionOffsetDirective() && IsSectionRelative) {
OutStreamer.EmitCOFFSecRel32(Label);
return;
// Emit Label+Offset (or just Label if Offset is zero)
const MCExpr *Expr = MCSymbolRefExpr::Create(Label, OutContext);
if (Offset)
- Expr = MCBinaryExpr::CreateAdd(Expr,
- MCConstantExpr::Create(Offset, OutContext),
- OutContext);
+ Expr = MCBinaryExpr::CreateAdd(
+ Expr, MCConstantExpr::Create(Offset, OutContext), OutContext);
OutStreamer.EmitValue(Expr, Size);
}
-
//===----------------------------------------------------------------------===//
// EmitAlignment - Emit an alignment directive to the specified power of
return MCConstantExpr::Create(CI->getZExtValue(), Ctx);
if (const GlobalValue *GV = dyn_cast<GlobalValue>(CV))
- return MCSymbolRefExpr::Create(AP.Mang->getSymbol(GV), Ctx);
+ return MCSymbolRefExpr::Create(AP.getSymbol(GV), Ctx);
if (const BlockAddress *BA = dyn_cast<BlockAddress>(CV))
return MCSymbolRefExpr::Create(AP.GetBlockAddressSymbol(BA), Ctx);
case Instruction::GetElementPtr: {
const DataLayout &DL = *AP.TM.getDataLayout();
// Generate a symbolic expression for the byte address
- APInt OffsetAI(DL.getPointerSizeInBits(), 0);
+ APInt OffsetAI(DL.getPointerTypeSizeInBits(CE->getType()), 0);
cast<GEPOperator>(CE)->accumulateConstantOffset(DL, OffsetAI);
const MCExpr *Base = lowerConstant(CE->getOperand(0), AP);
// Handle casts to pointers by changing them into casts to the appropriate
// integer type. This promotes constant folding and simplifies this code.
Constant *Op = CE->getOperand(0);
- Op = ConstantExpr::getIntegerCast(Op, DL.getIntPtrType(CV->getContext()),
+ Op = ConstantExpr::getIntegerCast(Op, DL.getIntPtrType(CV->getType()),
false/*ZExt*/);
return lowerConstant(Op, AP);
}
Twine(UID) + "_set_" + Twine(MBBID));
}
-/// GetSymbolWithGlobalValueBase - Return the MCSymbol for a symbol with
-/// global value name as its base, with the specified suffix, and where the
-/// symbol is forced to have private linkage if ForcePrivate is true.
-MCSymbol *AsmPrinter::GetSymbolWithGlobalValueBase(const GlobalValue *GV,
- StringRef Suffix,
- bool ForcePrivate) const {
- SmallString<60> NameStr;
- Mang->getNameWithPrefix(NameStr, GV, ForcePrivate);
- NameStr.append(Suffix.begin(), Suffix.end());
- return OutContext.GetOrCreateSymbol(NameStr.str());
+MCSymbol *AsmPrinter::getSymbolWithGlobalValueBase(const GlobalValue *GV,
+ StringRef Suffix) const {
+ return getObjFileLowering().getSymbolWithGlobalValueBase(*Mang, GV, Suffix);
}
/// GetExternalSymbolSymbol - Return the MCSymbol for the specified