#include "llvm/CodeGen/AsmPrinter.h"
#include "DwarfDebug.h"
#include "DwarfException.h"
+#include "Win64Exception.h"
#include "WinCodeViewLineTables.h"
#include "llvm/ADT/SmallString.h"
#include "llvm/ADT/Statistic.h"
#include "llvm/Analysis/ConstantFolding.h"
#include "llvm/Analysis/JumpInstrTableInfo.h"
+#include "llvm/CodeGen/Analysis.h"
#include "llvm/CodeGen/GCMetadataPrinter.h"
#include "llvm/CodeGen/MachineConstantPool.h"
#include "llvm/CodeGen/MachineFrameInfo.h"
#include "llvm/Target/TargetLoweringObjectFile.h"
#include "llvm/Target/TargetRegisterInfo.h"
#include "llvm/Target/TargetSubtargetInfo.h"
-#include "llvm/Transforms/Utils/GlobalStatus.h"
using namespace llvm;
#define DEBUG_TYPE "asm-printer"
}
AsmPrinter::AsmPrinter(TargetMachine &tm, MCStreamer &Streamer)
- : MachineFunctionPass(ID),
- TM(tm), MAI(tm.getMCAsmInfo()), MII(tm.getInstrInfo()),
- OutContext(Streamer.getContext()),
- OutStreamer(Streamer),
- LastMI(nullptr), LastFn(0), Counter(~0U), SetCounter(0) {
+ : MachineFunctionPass(ID), TM(tm), MAI(tm.getMCAsmInfo()),
+ MII(tm.getSubtargetImpl()->getInstrInfo()),
+ OutContext(Streamer.getContext()), OutStreamer(Streamer), LastMI(nullptr),
+ LastFn(0), Counter(~0U), SetCounter(0) {
DD = nullptr; MMI = nullptr; LI = nullptr; MF = nullptr;
CurrentFnSym = CurrentFnSymForSize = nullptr;
GCMetadataPrinters = nullptr;
}
const TargetLoweringObjectFile &AsmPrinter::getObjFileLowering() const {
- return TM.getTargetLowering()->getObjFileLowering();
+ return TM.getSubtargetImpl()->getTargetLowering()->getObjFileLowering();
}
/// getDataLayout - Return information about data layout.
const DataLayout &AsmPrinter::getDataLayout() const {
- return *TM.getDataLayout();
+ return *TM.getSubtargetImpl()->getDataLayout();
}
const MCSubtargetInfo &AsmPrinter::getSubtargetInfo() const {
const_cast<TargetLoweringObjectFile&>(getObjFileLowering())
.Initialize(OutContext, TM);
- OutStreamer.InitSections();
+ OutStreamer.InitSections(false);
- Mang = new Mangler(TM.getDataLayout());
+ Mang = new Mangler(TM.getSubtargetImpl()->getDataLayout());
// Emit the version-min deplyment target directive if needed.
//
}
if (MAI->doesSupportDebugInformation()) {
- if (Triple(TM.getTargetTriple()).isKnownWindowsMSVCEnvironment()) {
+ if (Triple(TM.getTargetTriple()).isKnownWindowsMSVCEnvironment())
Handlers.push_back(HandlerInfo(new WinCodeViewLineTables(this),
DbgTimerName,
CodeViewLineTablesGroupName));
- } else {
- DD = new DwarfDebug(this, &M);
- Handlers.push_back(HandlerInfo(DD, DbgTimerName, DWARFGroupName));
- }
+ DD = new DwarfDebug(this, &M);
+ Handlers.push_back(HandlerInfo(DD, DbgTimerName, DWARFGroupName));
}
EHStreamer *ES = nullptr;
case ExceptionHandling::ARM:
ES = new ARMException(this);
break;
- case ExceptionHandling::Win64:
- ES = new Win64Exception(this);
+ case ExceptionHandling::WinEH:
+ switch (MAI->getWinEHEncodingType()) {
+ default: llvm_unreachable("unsupported unwinding information encoding");
+ case WinEH::EncodingType::Itanium:
+ ES = new Win64Exception(this);
+ break;
+ }
break;
}
if (ES)
}
static bool canBeHidden(const GlobalValue *GV, const MCAsmInfo &MAI) {
- GlobalValue::LinkageTypes Linkage = GV->getLinkage();
- if (Linkage != GlobalValue::LinkOnceODRLinkage)
- return false;
-
if (!MAI.hasWeakDefCanBeHiddenDirective())
return false;
- if (GV->hasUnnamedAddr())
- return true;
-
- // This is only used for MachO, so right now it doesn't really matter how
- // we handle alias. Revisit this once the MachO linker implements aliases.
- if (isa<GlobalAlias>(GV))
- return false;
-
- // 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) && !GS.IsCompared)
- return true;
-
- return false;
+ return canBeOmittedFromSymbolTable(GV);
}
void AsmPrinter::EmitLinkage(const GlobalValue *GV, MCSymbol *GVSym) const {
SectionKind GVKind = TargetLoweringObjectFile::getKindForGlobal(GV, TM);
- const DataLayout *DL = TM.getDataLayout();
+ const DataLayout *DL = TM.getSubtargetImpl()->getDataLayout();
uint64_t Size = DL->getTypeAllocSize(GV->getType()->getElementType());
// If the alignment is specified, we *must* obey it. Overaligning a global
// We assume a single instruction only has a spill or reload, not
// both.
const MachineMemOperand *MMO;
- if (TM.getInstrInfo()->isLoadFromStackSlotPostFE(&MI, FI)) {
+ if (TM.getSubtargetImpl()->getInstrInfo()->isLoadFromStackSlotPostFE(&MI,
+ FI)) {
if (FrameInfo->isSpillSlotObjectIndex(FI)) {
MMO = *MI.memoperands_begin();
CommentOS << MMO->getSize() << "-byte Reload\n";
}
- } else if (TM.getInstrInfo()->hasLoadFromStackSlot(&MI, MMO, FI)) {
+ } else if (TM.getSubtargetImpl()->getInstrInfo()->hasLoadFromStackSlot(
+ &MI, MMO, FI)) {
if (FrameInfo->isSpillSlotObjectIndex(FI))
CommentOS << MMO->getSize() << "-byte Folded Reload\n";
- } else if (TM.getInstrInfo()->isStoreToStackSlotPostFE(&MI, FI)) {
+ } else if (TM.getSubtargetImpl()->getInstrInfo()->isStoreToStackSlotPostFE(
+ &MI, FI)) {
if (FrameInfo->isSpillSlotObjectIndex(FI)) {
MMO = *MI.memoperands_begin();
CommentOS << MMO->getSize() << "-byte Spill\n";
}
- } else if (TM.getInstrInfo()->hasStoreToStackSlot(&MI, MMO, FI)) {
+ } else if (TM.getSubtargetImpl()->getInstrInfo()->hasStoreToStackSlot(
+ &MI, MMO, FI)) {
if (FrameInfo->isSpillSlotObjectIndex(FI))
CommentOS << MMO->getSize() << "-byte Folded Spill\n";
}
/// that is an implicit def.
void AsmPrinter::emitImplicitDef(const MachineInstr *MI) const {
unsigned RegNo = MI->getOperand(0).getReg();
- OutStreamer.AddComment(Twine("implicit-def: ") +
- TM.getRegisterInfo()->getName(RegNo));
+ OutStreamer.AddComment(
+ Twine("implicit-def: ") +
+ TM.getSubtargetImpl()->getRegisterInfo()->getName(RegNo));
OutStreamer.AddBlankLine();
}
const MachineOperand &Op = MI->getOperand(i);
assert(Op.isReg() && "KILL instruction must have only register operands");
Str += ' ';
- Str += AP.TM.getRegisterInfo()->getName(Op.getReg());
+ Str += AP.TM.getSubtargetImpl()->getRegisterInfo()->getName(Op.getReg());
Str += (Op.isDef() ? "<def>" : "<kill>");
}
AP.OutStreamer.AddComment(Str);
/// of DBG_VALUE, returning true if it was able to do so. A false return
/// means the target will need to handle MI in EmitInstruction.
static bool emitDebugValueComment(const MachineInstr *MI, AsmPrinter &AP) {
- // This code handles only the 3-operand target-independent form.
- if (MI->getNumOperands() != 3)
+ // This code handles only the 4-operand target-independent form.
+ if (MI->getNumOperands() != 4)
return false;
SmallString<128> Str;
raw_svector_ostream OS(Str);
OS << "DEBUG_VALUE: ";
- DIVariable V(MI->getOperand(2).getMetadata());
+ DIVariable V = MI->getDebugVariable();
if (V.getContext().isSubprogram()) {
StringRef Name = DISubprogram(V.getContext()).getDisplayName();
if (!Name.empty())
OS << Name << ":";
}
- OS << V.getName() << " <- ";
+ OS << V.getName();
+
+ DIExpression Expr = MI->getDebugExpression();
+ if (Expr.isVariablePiece())
+ OS << " [piece offset=" << Expr.getPieceOffset()
+ << " size=" << Expr.getPieceSize() << "]";
+ OS << " <- ";
// The second operand is only an offset if it's an immediate.
bool Deref = MI->getOperand(0).isReg() && MI->getOperand(1).isImm();
Reg = MI->getOperand(0).getReg();
} else {
assert(MI->getOperand(0).isFI() && "Unknown operand type");
- const TargetFrameLowering *TFI = AP.TM.getFrameLowering();
+ const TargetFrameLowering *TFI =
+ AP.TM.getSubtargetImpl()->getFrameLowering();
Offset += TFI->getFrameIndexReference(*AP.MF,
MI->getOperand(0).getIndex(), Reg);
Deref = true;
}
if (Deref)
OS << '[';
- OS << AP.TM.getRegisterInfo()->getName(Reg);
+ OS << AP.TM.getSubtargetImpl()->getRegisterInfo()->getName(Reg);
}
if (Deref)
}
bool AsmPrinter::needsSEHMoves() {
- return MAI->getExceptionHandlingType() == ExceptionHandling::Win64 &&
+ return MAI->getExceptionHandlingType() == ExceptionHandling::WinEH &&
MF->getFunction()->needsUnwindTableEntry();
}
void AsmPrinter::emitCFIInstruction(const MachineInstr &MI) {
- ExceptionHandling::ExceptionsType ExceptionHandlingType =
- MAI->getExceptionHandlingType();
+ ExceptionHandling ExceptionHandlingType = MAI->getExceptionHandlingType();
if (ExceptionHandlingType != ExceptionHandling::DwarfCFI &&
ExceptionHandlingType != ExceptionHandling::ARM)
return;
if (needsCFIMoves() == CFI_M_None)
return;
- if (MMI->getCompactUnwindEncoding() != 0)
- OutStreamer.EmitCompactUnwindEncoding(MMI->getCompactUnwindEncoding());
-
const MachineModuleInfo &MMI = MF->getMMI();
const std::vector<MCCFIInstruction> &Instrs = MMI.getFrameInstructions();
unsigned CFIIndex = MI.getOperand(0).getCFIIndex();
// Print out code for the function.
bool HasAnyRealCode = false;
- const MachineInstr *LastMI = nullptr;
for (auto &MBB : *MF) {
// Print a label for the basic block.
EmitBasicBlockStart(MBB);
for (auto &MI : MBB) {
- LastMI = &MI;
// Print the assembly for the instruction.
if (!MI.isPosition() && !MI.isImplicitDef() && !MI.isKill() &&
}
}
}
- }
- // If the last instruction was a prolog label, then we have a situation where
- // we emitted a prolog but no function body. This results in the ending prolog
- // label equaling the end of function label and an invalid "row" in the
- // FDE. We need to emit a noop in this situation so that the FDE's rows are
- // valid.
- bool RequiresNoop = LastMI && LastMI->isCFIInstruction();
+ EmitBasicBlockEnd(MBB);
+ }
// If the function is empty and the object file uses .subsections_via_symbols,
// then we need to emit *something* to the function body to prevent the
// labels from collapsing together. Just emit a noop.
- if ((MAI->hasSubsectionsViaSymbols() && !HasAnyRealCode) || RequiresNoop) {
+ if ((MAI->hasSubsectionsViaSymbols() && !HasAnyRealCode)) {
MCInst Noop;
- TM.getInstrInfo()->getNoopForMachoTarget(Noop);
- if (Noop.getOpcode()) {
- OutStreamer.AddComment("avoids zero-length function");
+ TM.getSubtargetImpl()->getInstrInfo()->getNoopForMachoTarget(Noop);
+ OutStreamer.AddComment("avoids zero-length function");
+
+ // Targets can opt-out of emitting the noop here by leaving the opcode
+ // unspecified.
+ if (Noop.getOpcode())
OutStreamer.EmitInstruction(Noop, getSubtargetInfo());
- } else // Target not mc-ized yet.
- OutStreamer.EmitRawText(StringRef("\tnop\n"));
}
const Function *F = MF->getFunction();
unsigned Arch = Triple(getTargetTriple()).getArch();
bool IsThumb = (Arch == Triple::thumb || Arch == Triple::thumbeb);
MCInst TrapInst;
- TM.getInstrInfo()->getTrap(TrapInst);
+ TM.getSubtargetImpl()->getInstrInfo()->getTrap(TrapInst);
+ unsigned LogAlignment = llvm::Log2_64(JITI->entryByteAlignment());
+
+ // Emit the right section for these functions.
+ OutStreamer.SwitchSection(OutContext.getObjectFileInfo()->getTextSection());
for (const auto &KV : JITI->getTables()) {
uint64_t Count = 0;
for (const auto &FunPair : KV.second) {
// Emit the function labels to make this be a function entry point.
MCSymbol *FunSym =
OutContext.GetOrCreateSymbol(FunPair.second->getName());
- OutStreamer.EmitSymbolAttribute(FunSym, MCSA_Global);
- // FIXME: JumpTableInstrInfo should store information about the required
- // alignment of table entries and the size of the padding instruction.
- EmitAlignment(3);
+ EmitAlignment(LogAlignment);
if (IsThumb)
OutStreamer.EmitThumbFunc(FunSym);
if (MAI->hasDotTypeDotSizeDirective())
const MCSymbolRefExpr *TargetSymRef =
MCSymbolRefExpr::Create(TargetSymbol, MCSymbolRefExpr::VK_PLT,
OutContext);
- TM.getInstrInfo()->getUnconditionalBranch(JumpToFun, TargetSymRef);
+ TM.getSubtargetImpl()->getInstrInfo()->getUnconditionalBranch(
+ JumpToFun, TargetSymRef);
OutStreamer.EmitInstruction(JumpToFun, getSubtargetInfo());
++Count;
}
// Emit enough padding instructions to fill up to the next power of two.
- // This assumes that the trap instruction takes 8 bytes or fewer.
uint64_t Remaining = NextPowerOf2(Count) - Count;
for (uint64_t C = 0; C < Remaining; ++C) {
- EmitAlignment(3);
+ EmitAlignment(LogAlignment);
OutStreamer.EmitInstruction(TrapInst, getSubtargetInfo());
}
}
}
- if (MAI->hasSetDirective()) {
- OutStreamer.AddBlankLine();
- for (const auto &Alias : M.aliases()) {
- MCSymbol *Name = getSymbol(&Alias);
+ OutStreamer.AddBlankLine();
+ for (const auto &Alias : M.aliases()) {
+ MCSymbol *Name = getSymbol(&Alias);
- if (Alias.hasExternalLinkage() || !MAI->getWeakRefDirective())
- OutStreamer.EmitSymbolAttribute(Name, MCSA_Global);
- else if (Alias.hasWeakLinkage() || Alias.hasLinkOnceLinkage())
- OutStreamer.EmitSymbolAttribute(Name, MCSA_WeakReference);
- else
- assert(Alias.hasLocalLinkage() && "Invalid alias linkage");
+ if (Alias.hasExternalLinkage() || !MAI->getWeakRefDirective())
+ OutStreamer.EmitSymbolAttribute(Name, MCSA_Global);
+ else if (Alias.hasWeakLinkage() || Alias.hasLinkOnceLinkage())
+ OutStreamer.EmitSymbolAttribute(Name, MCSA_WeakReference);
+ else
+ assert(Alias.hasLocalLinkage() && "Invalid alias linkage");
- EmitVisibility(Name, Alias.getVisibility());
+ EmitVisibility(Name, Alias.getVisibility());
- // Emit the directives as assignments aka .set:
- OutStreamer.EmitAssignment(Name,
- lowerConstant(Alias.getAliasee(), *this));
- }
+ // Emit the directives as assignments aka .set:
+ OutStreamer.EmitAssignment(Name, lowerConstant(Alias.getAliasee(), *this));
}
GCModuleInfo *MI = getAnalysisIfAvailable<GCModuleInfo>();
const MachineConstantPoolEntry &CPE = CP[i];
unsigned Align = CPE.getAlignment();
- SectionKind Kind;
- switch (CPE.getRelocationInfo()) {
- default: llvm_unreachable("Unknown section kind");
- case 2: Kind = SectionKind::getReadOnlyWithRel(); break;
- case 1:
- Kind = SectionKind::getReadOnlyWithRelLocal();
- break;
- case 0:
- switch (TM.getDataLayout()->getTypeAllocSize(CPE.getType())) {
- case 4: Kind = SectionKind::getMergeableConst4(); break;
- case 8: Kind = SectionKind::getMergeableConst8(); break;
- case 16: Kind = SectionKind::getMergeableConst16();break;
- default: Kind = SectionKind::getMergeableConst(); break;
- }
- }
+ SectionKind Kind =
+ CPE.getSectionKind(TM.getSubtargetImpl()->getDataLayout());
+
+ const Constant *C = nullptr;
+ if (!CPE.isMachineConstantPoolEntry())
+ C = CPE.Val.ConstVal;
- const MCSection *S = getObjFileLowering().getSectionForConstant(Kind);
+ const MCSection *S = getObjFileLowering().getSectionForConstant(Kind, C);
// The number of sections are small, just do a linear search from the
// last section to the first.
}
// Now print stuff into the calculated sections.
+ const MCSection *CurSection = nullptr;
+ unsigned Offset = 0;
for (unsigned i = 0, e = CPSections.size(); i != e; ++i) {
- OutStreamer.SwitchSection(CPSections[i].S);
- EmitAlignment(Log2_32(CPSections[i].Alignment));
-
- unsigned Offset = 0;
for (unsigned j = 0, ee = CPSections[i].CPEs.size(); j != ee; ++j) {
unsigned CPI = CPSections[i].CPEs[j];
+ MCSymbol *Sym = GetCPISymbol(CPI);
+ if (!Sym->isUndefined())
+ continue;
+
+ if (CurSection != CPSections[i].S) {
+ OutStreamer.SwitchSection(CPSections[i].S);
+ EmitAlignment(Log2_32(CPSections[i].Alignment));
+ CurSection = CPSections[i].S;
+ Offset = 0;
+ }
+
MachineConstantPoolEntry CPE = CP[CPI];
// Emit inter-object padding for alignment.
OutStreamer.EmitZeros(NewOffset - Offset);
Type *Ty = CPE.getType();
- Offset = NewOffset + TM.getDataLayout()->getTypeAllocSize(Ty);
- OutStreamer.EmitLabel(GetCPISymbol(CPI));
+ Offset = NewOffset +
+ TM.getSubtargetImpl()->getDataLayout()->getTypeAllocSize(Ty);
+ OutStreamer.EmitLabel(Sym);
if (CPE.isMachineConstantPoolEntry())
EmitMachineConstantPoolValue(CPE.Val.MachineCPVal);
else
/// by the current function to the current output stream.
///
void AsmPrinter::EmitJumpTableInfo() {
- const DataLayout *DL = MF->getTarget().getDataLayout();
+ const DataLayout *DL = MF->getSubtarget().getDataLayout();
const MachineJumpTableInfo *MJTI = MF->getJumpTableInfo();
if (!MJTI) return;
if (MJTI->getEntryKind() == MachineJumpTableInfo::EK_Inline) return;
} else {
// Otherwise, drop it in the readonly section.
const MCSection *ReadOnlySection =
- getObjFileLowering().getSectionForConstant(SectionKind::getReadOnly());
+ getObjFileLowering().getSectionForConstant(SectionKind::getReadOnly(),
+ /*C=*/nullptr);
OutStreamer.SwitchSection(ReadOnlySection);
JTInDiffSection = true;
}
- EmitAlignment(Log2_32(MJTI->getEntryAlignment(*TM.getDataLayout())));
+ EmitAlignment(Log2_32(
+ MJTI->getEntryAlignment(*TM.getSubtargetImpl()->getDataLayout())));
// Jump tables in code sections are marked with a data_region directive
// where that's supported.
// If this jump table was deleted, ignore it.
if (JTBBs.empty()) continue;
- // For the EK_LabelDifference32 entry, if the target supports .set, emit a
- // .set directive for each unique entry. This reduces the number of
- // relocations the assembler will generate for the jump table.
+ // For the EK_LabelDifference32 entry, if using .set avoids a relocation,
+ /// emit a .set directive for each unique entry.
if (MJTI->getEntryKind() == MachineJumpTableInfo::EK_LabelDifference32 &&
- MAI->hasSetDirective()) {
+ MAI->doesSetDirectiveSuppressesReloc()) {
SmallPtrSet<const MachineBasicBlock*, 16> EmittedSets;
- const TargetLowering *TLI = TM.getTargetLowering();
+ const TargetLowering *TLI = TM.getSubtargetImpl()->getTargetLowering();
const MCExpr *Base = TLI->getPICJumpTableRelocBaseExpr(MF,JTI,OutContext);
for (unsigned ii = 0, ee = JTBBs.size(); ii != ee; ++ii) {
const MachineBasicBlock *MBB = JTBBs[ii];
case MachineJumpTableInfo::EK_Inline:
llvm_unreachable("Cannot emit EK_Inline jump table entry");
case MachineJumpTableInfo::EK_Custom32:
- Value = TM.getTargetLowering()->LowerCustomJumpTableEntry(MJTI, MBB, UID,
- OutContext);
+ Value =
+ TM.getSubtargetImpl()->getTargetLowering()->LowerCustomJumpTableEntry(
+ MJTI, MBB, UID, OutContext);
break;
case MachineJumpTableInfo::EK_BlockAddress:
// EK_BlockAddress - Each entry is a plain address of block, e.g.:
}
case MachineJumpTableInfo::EK_LabelDifference32: {
- // EK_LabelDifference32 - Each entry is the address of the block minus
- // the address of the jump table. This is used for PIC jump tables where
- // gprel32 is not supported. e.g.:
+ // Each entry is the address of the block minus the address of the jump
+ // table. This is used for PIC jump tables where gprel32 is not supported.
+ // e.g.:
// .word LBB123 - LJTI1_2
- // If the .set directive is supported, this is emitted as:
+ // If the .set directive avoids relocations, this is emitted as:
// .set L4_5_set_123, LBB123 - LJTI1_2
// .word L4_5_set_123
-
- // If we have emitted set directives for the jump table entries, print
- // them rather than the entries themselves. If we're emitting PIC, then
- // emit the table entries as differences between two text section labels.
- if (MAI->hasSetDirective()) {
- // If we used .set, reference the .set's symbol.
+ if (MAI->doesSetDirectiveSuppressesReloc()) {
Value = MCSymbolRefExpr::Create(GetJTSetSymbol(UID, MBB->getNumber()),
OutContext);
break;
}
- // Otherwise, use the difference as the jump table entry.
Value = MCSymbolRefExpr::Create(MBB->getSymbol(), OutContext);
- const MCExpr *JTI = MCSymbolRefExpr::Create(GetJTISymbol(UID), OutContext);
- Value = MCBinaryExpr::CreateSub(Value, JTI, OutContext);
+ const TargetLowering *TLI = TM.getSubtargetImpl()->getTargetLowering();
+ const MCExpr *Base = TLI->getPICJumpTableRelocBaseExpr(MF, UID, OutContext);
+ Value = MCBinaryExpr::CreateSub(Value, Base, OutContext);
break;
}
}
assert(Value && "Unknown entry kind!");
- unsigned EntrySize = MJTI->getEntrySize(*TM.getDataLayout());
+ unsigned EntrySize =
+ MJTI->getEntrySize(*TM.getSubtargetImpl()->getDataLayout());
OutStreamer.EmitValue(Value, EntrySize);
}
}
// Emit the function pointers in the target-specific order
- const DataLayout *DL = TM.getDataLayout();
+ const DataLayout *DL = TM.getSubtargetImpl()->getDataLayout();
unsigned Align = Log2_32(DL->getPointerPrefAlignment());
std::stable_sort(Structors.begin(), Structors.end(),
[](const Structor &L,
OutStreamer.EmitIntValue(Value, 4);
}
-/// EmitLabelDifference - Emit something like ".long Hi-Lo" 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.
+/// Emit something like ".long Hi-Lo" where the size in bytes of the directive
+/// is specified by Size and Hi/Lo specify the labels. This implicitly uses
+/// .set if it avoids relocations.
void AsmPrinter::EmitLabelDifference(const MCSymbol *Hi, const MCSymbol *Lo,
unsigned Size) const {
// Get the Hi-Lo expression.
MCSymbolRefExpr::Create(Lo, OutContext),
OutContext);
- if (!MAI->hasSetDirective()) {
+ if (!MAI->doesSetDirectiveSuppressesReloc()) {
OutStreamer.EmitValue(Diff, Size);
return;
}
OutStreamer.EmitSymbolValue(SetLabel, Size);
}
-/// EmitLabelOffsetDifference - Emit something like ".long Hi+Offset-Lo"
-/// 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 {
-
- // Emit Hi+Offset - Lo
- // Get the Hi+Offset expression.
- const MCExpr *Plus =
- MCBinaryExpr::CreateAdd(MCSymbolRefExpr::Create(Hi, OutContext),
- MCConstantExpr::Create(Offset, OutContext),
- OutContext);
-
- // Get the Hi+Offset-Lo expression.
- const MCExpr *Diff =
- MCBinaryExpr::CreateSub(Plus,
- MCSymbolRefExpr::Create(Lo, OutContext),
- OutContext);
-
- if (!MAI->hasSetDirective())
- OutStreamer.EmitValue(Diff, Size);
- else {
- // Otherwise, emit with .set (aka assignment).
- MCSymbol *SetLabel = GetTempSymbol("set", SetCounter++);
- OutStreamer.EmitAssignment(SetLabel, Diff);
- OutStreamer.EmitSymbolValue(SetLabel, Size);
- }
-}
-
/// EmitLabelPlusOffset - Emit something like ".long Label+Offset"
/// 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.
// if required for correctness.
//
void AsmPrinter::EmitAlignment(unsigned NumBits, const GlobalObject *GV) const {
- if (GV) NumBits = getGVAlignmentLog2(GV, *TM.getDataLayout(), NumBits);
+ if (GV)
+ NumBits = getGVAlignmentLog2(GV, *TM.getSubtargetImpl()->getDataLayout(),
+ NumBits);
if (NumBits == 0) return; // 1-byte aligned: no need to emit alignment.
// If the code isn't optimized, there may be outstanding folding
// opportunities. Attempt to fold the expression using DataLayout as a
// last resort before giving up.
- if (Constant *C =
- ConstantFoldConstantExpression(CE, AP.TM.getDataLayout()))
+ if (Constant *C = ConstantFoldConstantExpression(
+ CE, AP.TM.getSubtargetImpl()->getDataLayout()))
if (C != CE)
return lowerConstant(C, AP);
report_fatal_error(OS.str());
}
case Instruction::GetElementPtr: {
- const DataLayout &DL = *AP.TM.getDataLayout();
+ const DataLayout &DL = *AP.TM.getSubtargetImpl()->getDataLayout();
// Generate a symbolic expression for the byte address
APInt OffsetAI(DL.getPointerTypeSizeInBits(CE->getType()), 0);
cast<GEPOperator>(CE)->accumulateConstantOffset(DL, OffsetAI);
return lowerConstant(CE->getOperand(0), AP);
case Instruction::IntToPtr: {
- const DataLayout &DL = *AP.TM.getDataLayout();
+ const DataLayout &DL = *AP.TM.getSubtargetImpl()->getDataLayout();
// 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);
}
case Instruction::PtrToInt: {
- const DataLayout &DL = *AP.TM.getDataLayout();
+ const DataLayout &DL = *AP.TM.getSubtargetImpl()->getDataLayout();
// Support only foldable casts to/from pointers that can be eliminated by
// changing the pointer to the appropriately sized integer type.
Constant *Op = CE->getOperand(0);
if (const ConstantInt *CI = dyn_cast<ConstantInt>(V)) {
if (CI->getBitWidth() > 64) return -1;
- uint64_t Size = TM.getDataLayout()->getTypeAllocSize(V->getType());
+ uint64_t Size =
+ TM.getSubtargetImpl()->getDataLayout()->getTypeAllocSize(V->getType());
uint64_t Value = CI->getZExtValue();
// Make sure the constant is at least 8 bits long and has a power
// See if we can aggregate this into a .fill, if so, emit it as such.
int Value = isRepeatedByteSequence(CDS, AP.TM);
if (Value != -1) {
- uint64_t Bytes = AP.TM.getDataLayout()->getTypeAllocSize(CDS->getType());
+ uint64_t Bytes =
+ AP.TM.getSubtargetImpl()->getDataLayout()->getTypeAllocSize(
+ CDS->getType());
// Don't emit a 1-byte object as a .fill.
if (Bytes > 1)
return AP.OutStreamer.EmitFill(Bytes, Value);
}
}
- const DataLayout &DL = *AP.TM.getDataLayout();
+ const DataLayout &DL = *AP.TM.getSubtargetImpl()->getDataLayout();
unsigned Size = DL.getTypeAllocSize(CDS->getType());
unsigned EmittedSize = DL.getTypeAllocSize(CDS->getType()->getElementType()) *
CDS->getNumElements();
int Value = isRepeatedByteSequence(CA, AP.TM);
if (Value != -1) {
- uint64_t Bytes = AP.TM.getDataLayout()->getTypeAllocSize(CA->getType());
+ uint64_t Bytes =
+ AP.TM.getSubtargetImpl()->getDataLayout()->getTypeAllocSize(
+ CA->getType());
AP.OutStreamer.EmitFill(Bytes, Value);
}
else {
for (unsigned i = 0, e = CV->getType()->getNumElements(); i != e; ++i)
emitGlobalConstantImpl(CV->getOperand(i), AP);
- const DataLayout &DL = *AP.TM.getDataLayout();
+ const DataLayout &DL = *AP.TM.getSubtargetImpl()->getDataLayout();
unsigned Size = DL.getTypeAllocSize(CV->getType());
unsigned EmittedSize = DL.getTypeAllocSize(CV->getType()->getElementType()) *
CV->getType()->getNumElements();
static void emitGlobalConstantStruct(const ConstantStruct *CS, AsmPrinter &AP) {
// Print the fields in successive locations. Pad to align if needed!
- const DataLayout *DL = AP.TM.getDataLayout();
+ const DataLayout *DL = AP.TM.getSubtargetImpl()->getDataLayout();
unsigned Size = DL->getTypeAllocSize(CS->getType());
const StructLayout *Layout = DL->getStructLayout(CS->getType());
uint64_t SizeSoFar = 0;
// PPC's long double has odd notions of endianness compared to how LLVM
// handles it: p[0] goes first for *big* endian on PPC.
- if (AP.TM.getDataLayout()->isBigEndian() != CFP->getType()->isPPC_FP128Ty()) {
+ if (AP.TM.getSubtargetImpl()->getDataLayout()->isBigEndian() &&
+ !CFP->getType()->isPPC_FP128Ty()) {
int Chunk = API.getNumWords() - 1;
if (TrailingBytes)
}
// Emit the tail padding for the long double.
- const DataLayout &DL = *AP.TM.getDataLayout();
+ const DataLayout &DL = *AP.TM.getSubtargetImpl()->getDataLayout();
AP.OutStreamer.EmitZeros(DL.getTypeAllocSize(CFP->getType()) -
DL.getTypeStoreSize(CFP->getType()));
}
static void emitGlobalConstantLargeInt(const ConstantInt *CI, AsmPrinter &AP) {
- const DataLayout *DL = AP.TM.getDataLayout();
+ const DataLayout *DL = AP.TM.getSubtargetImpl()->getDataLayout();
unsigned BitWidth = CI->getBitWidth();
// Copy the value as we may massage the layout for constants whose bit width
// Emit the extra bits after the 64-bits chunks.
// Emit a directive that fills the expected size.
- uint64_t Size = AP.TM.getDataLayout()->getTypeAllocSize(CI->getType());
+ uint64_t Size = AP.TM.getSubtargetImpl()->getDataLayout()->getTypeAllocSize(
+ CI->getType());
Size -= (BitWidth / 64) * 8;
assert(Size && Size * 8 >= ExtraBitsSize &&
(ExtraBits & (((uint64_t)-1) >> (64 - ExtraBitsSize)))
}
static void emitGlobalConstantImpl(const Constant *CV, AsmPrinter &AP) {
- const DataLayout *DL = AP.TM.getDataLayout();
+ const DataLayout *DL = AP.TM.getSubtargetImpl()->getDataLayout();
uint64_t Size = DL->getTypeAllocSize(CV->getType());
if (isa<ConstantAggregateZero>(CV) || isa<UndefValue>(CV))
return AP.OutStreamer.EmitZeros(Size);
/// EmitGlobalConstant - Print a general LLVM constant to the .s file.
void AsmPrinter::EmitGlobalConstant(const Constant *CV) {
- uint64_t Size = TM.getDataLayout()->getTypeAllocSize(CV->getType());
+ uint64_t Size =
+ TM.getSubtargetImpl()->getDataLayout()->getTypeAllocSize(CV->getType());
if (Size)
emitGlobalConstantImpl(CV, *this);
else if (MAI->hasSubsectionsViaSymbols()) {
/// GetTempSymbol - Return the MCSymbol corresponding to the assembler
/// temporary label with the specified stem and unique ID.
MCSymbol *AsmPrinter::GetTempSymbol(Twine Name, unsigned ID) const {
- const DataLayout *DL = TM.getDataLayout();
+ const DataLayout *DL = TM.getSubtargetImpl()->getDataLayout();
return OutContext.GetOrCreateSymbol(Twine(DL->getPrivateGlobalPrefix()) +
Name + Twine(ID));
}
/// GetTempSymbol - Return an assembler temporary label with the specified
/// stem.
MCSymbol *AsmPrinter::GetTempSymbol(Twine Name) const {
- const DataLayout *DL = TM.getDataLayout();
+ const DataLayout *DL = TM.getSubtargetImpl()->getDataLayout();
return OutContext.GetOrCreateSymbol(Twine(DL->getPrivateGlobalPrefix())+
Name);
}
/// GetCPISymbol - Return the symbol for the specified constant pool entry.
MCSymbol *AsmPrinter::GetCPISymbol(unsigned CPID) const {
- const DataLayout *DL = TM.getDataLayout();
+ const DataLayout *DL = TM.getSubtargetImpl()->getDataLayout();
return OutContext.GetOrCreateSymbol
(Twine(DL->getPrivateGlobalPrefix()) + "CPI" + Twine(getFunctionNumber())
+ "_" + Twine(CPID));
/// GetJTSetSymbol - Return the symbol for the specified jump table .set
/// FIXME: privatize to AsmPrinter.
MCSymbol *AsmPrinter::GetJTSetSymbol(unsigned UID, unsigned MBBID) const {
- const DataLayout *DL = TM.getDataLayout();
+ const DataLayout *DL = TM.getSubtargetImpl()->getDataLayout();
return OutContext.GetOrCreateSymbol
(Twine(DL->getPrivateGlobalPrefix()) + Twine(getFunctionNumber()) + "_" +
Twine(UID) + "_set_" + Twine(MBBID));
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