#include "llvm/CodeGen/AsmPrinter.h"
#include "DwarfDebug.h"
#include "DwarfException.h"
-#include "llvm/Module.h"
+#include "llvm/ADT/SmallString.h"
+#include "llvm/ADT/Statistic.h"
+#include "llvm/Analysis/ConstantFolding.h"
+#include "llvm/Assembly/Writer.h"
#include "llvm/CodeGen/GCMetadataPrinter.h"
#include "llvm/CodeGen/MachineConstantPool.h"
#include "llvm/CodeGen/MachineFrameInfo.h"
#include "llvm/CodeGen/MachineJumpTableInfo.h"
#include "llvm/CodeGen/MachineLoopInfo.h"
#include "llvm/CodeGen/MachineModuleInfo.h"
-#include "llvm/Analysis/ConstantFolding.h"
-#include "llvm/Analysis/DebugInfo.h"
+#include "llvm/DebugInfo.h"
+#include "llvm/IR/DataLayout.h"
+#include "llvm/IR/Module.h"
+#include "llvm/IR/Operator.h"
#include "llvm/MC/MCAsmInfo.h"
#include "llvm/MC/MCContext.h"
#include "llvm/MC/MCExpr.h"
#include "llvm/MC/MCSection.h"
#include "llvm/MC/MCStreamer.h"
#include "llvm/MC/MCSymbol.h"
+#include "llvm/Support/ErrorHandling.h"
+#include "llvm/Support/Format.h"
+#include "llvm/Support/MathExtras.h"
+#include "llvm/Support/Timer.h"
#include "llvm/Target/Mangler.h"
-#include "llvm/Target/TargetData.h"
#include "llvm/Target/TargetInstrInfo.h"
#include "llvm/Target/TargetLowering.h"
#include "llvm/Target/TargetLoweringObjectFile.h"
#include "llvm/Target/TargetOptions.h"
#include "llvm/Target/TargetRegisterInfo.h"
-#include "llvm/Assembly/Writer.h"
-#include "llvm/ADT/SmallString.h"
-#include "llvm/ADT/Statistic.h"
-#include "llvm/Support/ErrorHandling.h"
-#include "llvm/Support/Format.h"
-#include "llvm/Support/MathExtras.h"
-#include "llvm/Support/Timer.h"
using namespace llvm;
static const char *DWARFGroupName = "DWARF Emission";
/// getGVAlignmentLog2 - Return the alignment to use for the specified global
/// value in log2 form. This rounds up to the preferred alignment if possible
/// and legal.
-static unsigned getGVAlignmentLog2(const GlobalValue *GV, const TargetData &TD,
+static unsigned getGVAlignmentLog2(const GlobalValue *GV, const DataLayout &TD,
unsigned InBits = 0) {
unsigned NumBits = 0;
if (const GlobalVariable *GVar = dyn_cast<GlobalVariable>(GV))
return NumBits;
}
-
-
-
AsmPrinter::AsmPrinter(TargetMachine &tm, MCStreamer &Streamer)
: MachineFunctionPass(ID),
TM(tm), MAI(tm.getMCAsmInfo()),
OutStreamer(Streamer),
LastMI(0), LastFn(0), Counter(~0U), SetCounter(0) {
DD = 0; DE = 0; MMI = 0; LI = 0;
+ CurrentFnSym = CurrentFnSymForSize = 0;
GCMetadataPrinters = 0;
VerboseAsm = Streamer.isVerboseAsm();
}
return TM.getTargetLowering()->getObjFileLowering();
}
+/// getDataLayout - Return information about data layout.
+const DataLayout &AsmPrinter::getDataLayout() const {
+ return *TM.getDataLayout();
+}
-/// getTargetData - Return information about data layout.
-const TargetData &AsmPrinter::getTargetData() const {
- return *TM.getTargetData();
+StringRef AsmPrinter::getTargetTriple() const {
+ return TM.getTargetTriple();
}
/// getCurrentSection() - Return the current section we are emitting to.
const MCSection *AsmPrinter::getCurrentSection() const {
- return OutStreamer.getCurrentSection();
+ return OutStreamer.getCurrentSection().first;
}
}
bool AsmPrinter::doInitialization(Module &M) {
+ OutStreamer.InitStreamer();
+
MMI = getAnalysisIfAvailable<MachineModuleInfo>();
MMI->AnalyzeModule(M);
const_cast<TargetLoweringObjectFile&>(getObjFileLowering())
.Initialize(OutContext, TM);
- Mang = new Mangler(OutContext, *TM.getTargetData());
+ Mang = new Mangler(OutContext, *TM.getDataLayout());
// Allow the target to emit any magic that it wants at the start of the file.
EmitStartOfAsmFile(M);
case GlobalValue::CommonLinkage:
case GlobalValue::LinkOnceAnyLinkage:
case GlobalValue::LinkOnceODRLinkage:
+ case GlobalValue::LinkOnceODRAutoHideLinkage:
case GlobalValue::WeakAnyLinkage:
case GlobalValue::WeakODRLinkage:
case GlobalValue::LinkerPrivateWeakLinkage:
- case GlobalValue::LinkerPrivateWeakDefAutoLinkage:
if (MAI->getWeakDefDirective() != 0) {
// .globl _foo
OutStreamer.EmitSymbolAttribute(GVSym, MCSA_Global);
if ((GlobalValue::LinkageTypes)Linkage !=
- GlobalValue::LinkerPrivateWeakDefAutoLinkage)
+ GlobalValue::LinkOnceODRAutoHideLinkage)
// .weak_definition _foo
OutStreamer.EmitSymbolAttribute(GVSym, MCSA_WeakDefinition);
else
SectionKind GVKind = TargetLoweringObjectFile::getKindForGlobal(GV, TM);
- const TargetData *TD = TM.getTargetData();
+ const DataLayout *TD = TM.getDataLayout();
uint64_t Size = TD->getTypeAllocSize(GV->getType()->getElementType());
// If the alignment is specified, we *must* obey it. Overaligning a global
return;
}
- if (MAI->getLCOMMDirectiveType() != LCOMM::None &&
- (MAI->getLCOMMDirectiveType() != LCOMM::NoAlignment || Align == 1)) {
+ // Use .lcomm only if it supports user-specified alignment.
+ // Otherwise, while it would still be correct to use .lcomm in some
+ // cases (e.g. when Align == 1), the external assembler might enfore
+ // some -unknown- default alignment behavior, which could cause
+ // spurious differences between external and integrated assembler.
+ // Prefer to simply fall back to .local / .comm in this case.
+ if (MAI->getLCOMMDirectiveAlignmentType() != LCOMM::NoAlignment) {
// .lcomm _foo, 42
OutStreamer.EmitLocalCommonSymbol(GVSym, Size, Align);
return;
// - pointer to mangled symbol above with initializer
unsigned PtrSize = TD->getPointerSizeInBits()/8;
OutStreamer.EmitSymbolValue(GetExternalSymbolSymbol("_tlv_bootstrap"),
- PtrSize, 0);
- OutStreamer.EmitIntValue(0, PtrSize, 0);
- OutStreamer.EmitSymbolValue(MangSym, PtrSize, 0);
+ PtrSize);
+ OutStreamer.EmitIntValue(0, PtrSize);
+ OutStreamer.EmitSymbolValue(MangSym, PtrSize);
OutStreamer.AddBlankLine();
return;
void AsmPrinter::EmitFunctionEntryLabel() {
// The function label could have already been emitted if two symbols end up
// conflicting due to asm renaming. Detect this and emit an error.
- if (CurrentFnSym->isUndefined()) {
- OutStreamer.ForceCodeRegion();
+ if (CurrentFnSym->isUndefined())
return OutStreamer.EmitLabel(CurrentFnSym);
- }
report_fatal_error("'" + Twine(CurrentFnSym->getName()) +
"' label emitted multiple times to assembly file");
}
-
-/// EmitComments - Pretty-print comments for instructions.
-static void EmitComments(const MachineInstr &MI, raw_ostream &CommentOS) {
+/// emitComments - Pretty-print comments for instructions.
+static void emitComments(const MachineInstr &MI, raw_ostream &CommentOS) {
const MachineFunction *MF = MI.getParent()->getParent();
const TargetMachine &TM = MF->getTarget();
CommentOS << " Reload Reuse\n";
}
-/// EmitImplicitDef - This method emits the specified machine instruction
+/// emitImplicitDef - This method emits the specified machine instruction
/// that is an implicit def.
-static void EmitImplicitDef(const MachineInstr *MI, AsmPrinter &AP) {
+static void emitImplicitDef(const MachineInstr *MI, AsmPrinter &AP) {
unsigned RegNo = MI->getOperand(0).getReg();
AP.OutStreamer.AddComment(Twine("implicit-def: ") +
AP.TM.getRegisterInfo()->getName(RegNo));
AP.OutStreamer.AddBlankLine();
}
-static void EmitKill(const MachineInstr *MI, AsmPrinter &AP) {
+static void emitKill(const MachineInstr *MI, AsmPrinter &AP) {
std::string Str = "kill:";
for (unsigned i = 0, e = MI->getNumOperands(); i != e; ++i) {
const MachineOperand &Op = MI->getOperand(i);
AP.OutStreamer.AddBlankLine();
}
-/// EmitDebugValueComment - This method handles the target-independent form
+/// emitDebugValueComment - This method handles the target-independent form
/// 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) {
+static bool emitDebugValueComment(const MachineInstr *MI, AsmPrinter &AP) {
// This code handles only the 3-operand target-independent form.
if (MI->getNumOperands() != 3)
return false;
OS << AP.TM.getRegisterInfo()->getName(MI->getOperand(0).getReg());
}
- OS << '+' << MI->getOperand(1).getImm();
+ // It's only an offset if it's an immediate.
+ if (MI->getOperand(1).isImm())
+ OS << '+' << MI->getOperand(1).getImm();
// NOTE: Want this comment at start of line, don't emit with AddComment.
AP.OutStreamer.EmitRawText(OS.str());
return true;
}
bool AsmPrinter::needsRelocationsForDwarfStringPool() const {
- return MAI->doesDwarfUseRelocationsForStringPool();
+ return MAI->doesDwarfUseRelocationsAcrossSections();
}
void AsmPrinter::emitPrologLabel(const MachineInstr &MI) {
}
if (isVerbose())
- EmitComments(*II, OutStreamer.GetCommentOS());
+ emitComments(*II, OutStreamer.GetCommentOS());
switch (II->getOpcode()) {
case TargetOpcode::PROLOG_LABEL:
break;
case TargetOpcode::DBG_VALUE:
if (isVerbose()) {
- if (!EmitDebugValueComment(II, *this))
+ if (!emitDebugValueComment(II, *this))
EmitInstruction(II);
}
break;
case TargetOpcode::IMPLICIT_DEF:
- if (isVerbose()) EmitImplicitDef(II, *this);
+ if (isVerbose()) emitImplicitDef(II, *this);
break;
case TargetOpcode::KILL:
- if (isVerbose()) EmitKill(II, *this);
+ if (isVerbose()) emitKill(II, *this);
break;
default:
if (!TM.hasMCUseLoc())
const MCExpr *SizeExp =
MCBinaryExpr::CreateSub(MCSymbolRefExpr::Create(FnEndLabel, OutContext),
- MCSymbolRefExpr::Create(CurrentFnSym, OutContext),
+ MCSymbolRefExpr::Create(CurrentFnSymForSize,
+ OutContext),
OutContext);
OutStreamer.EmitELFSize(CurrentFnSym, SizeExp);
}
const TargetRegisterInfo *TRI = TM.getRegisterInfo();
int Reg = TRI->getDwarfRegNum(MLoc.getReg(), false);
- for (const unsigned *SR = TRI->getSuperRegisters(MLoc.getReg());
- *SR && Reg < 0; ++SR) {
+ for (MCSuperRegIterator SR(MLoc.getReg(), TRI); SR.isValid() && Reg < 0;
+ ++SR) {
Reg = TRI->getDwarfRegNum(*SR, false);
// FIXME: Get the bit range this register uses of the superregister
// so that we can produce a DW_OP_bit_piece
// caller might be in the middle of an dwarf expression. We should
// probably assert that Reg >= 0 once debug info generation is more mature.
- if (int Offset = MLoc.getOffset()) {
+ if (MLoc.isIndirect()) {
if (Reg < 32) {
OutStreamer.AddComment(
dwarf::OperationEncodingString(dwarf::DW_OP_breg0 + Reg));
OutStreamer.AddComment(Twine(Reg));
EmitULEB128(Reg);
}
- EmitSLEB128(Offset);
+ EmitSLEB128(MLoc.getOffset());
} else {
if (Reg < 32) {
OutStreamer.AddComment(
EmitVisibility(Name, V, false);
}
+ // Emit module flags.
+ SmallVector<Module::ModuleFlagEntry, 8> ModuleFlags;
+ M.getModuleFlagsMetadata(ModuleFlags);
+ if (!ModuleFlags.empty())
+ getObjFileLowering().emitModuleFlags(OutStreamer, ModuleFlags, Mang, TM);
+
// Finalize debug and EH information.
if (DE) {
{
MMI = 0;
OutStreamer.Finish();
+ OutStreamer.reset();
+
return false;
}
this->MF = &MF;
// Get the function symbol.
CurrentFnSym = Mang->getSymbol(MF.getFunction());
+ CurrentFnSymForSize = CurrentFnSym;
if (isVerbose())
LI = &getAnalysis<MachineLoopInfo>();
Kind = SectionKind::getReadOnlyWithRelLocal();
break;
case 0:
- switch (TM.getTargetData()->getTypeAllocSize(CPE.getType())) {
+ switch (TM.getDataLayout()->getTypeAllocSize(CPE.getType())) {
case 4: Kind = SectionKind::getMergeableConst4(); break;
case 8: Kind = SectionKind::getMergeableConst8(); break;
case 16: Kind = SectionKind::getMergeableConst16();break;
// Emit inter-object padding for alignment.
unsigned AlignMask = CPE.getAlignment() - 1;
unsigned NewOffset = (Offset + AlignMask) & ~AlignMask;
- OutStreamer.EmitFill(NewOffset - Offset, 0/*fillval*/, 0/*addrspace*/);
+ OutStreamer.EmitZeros(NewOffset - Offset);
Type *Ty = CPE.getType();
- Offset = NewOffset + TM.getTargetData()->getTypeAllocSize(Ty);
+ Offset = NewOffset + TM.getDataLayout()->getTypeAllocSize(Ty);
OutStreamer.EmitLabel(GetCPISymbol(CPI));
if (CPE.isMachineConstantPoolEntry())
JTInDiffSection = true;
}
- EmitAlignment(Log2_32(MJTI->getEntryAlignment(*TM.getTargetData())));
+ EmitAlignment(Log2_32(MJTI->getEntryAlignment(*TM.getDataLayout())));
- // If we know the form of the jump table, go ahead and tag it as such.
- if (!JTInDiffSection) {
- if (MJTI->getEntryKind() == MachineJumpTableInfo::EK_LabelDifference32) {
- OutStreamer.EmitJumpTable32Region();
- } else {
- OutStreamer.EmitDataRegion();
- }
- }
+ // Jump tables in code sections are marked with a data_region directive
+ // where that's supported.
+ if (!JTInDiffSection)
+ OutStreamer.EmitDataRegion(MCDR_DataRegionJT32);
for (unsigned JTI = 0, e = JT.size(); JTI != e; ++JTI) {
const std::vector<MachineBasicBlock*> &JTBBs = JT[JTI].MBBs;
for (unsigned ii = 0, ee = JTBBs.size(); ii != ee; ++ii)
EmitJumpTableEntry(MJTI, JTBBs[ii], JTI);
}
+ if (!JTInDiffSection)
+ OutStreamer.EmitDataRegion(MCDR_DataRegionEnd);
}
/// EmitJumpTableEntry - Emit a jump table entry for the specified MBB to the
return;
}
+ case MachineJumpTableInfo::EK_GPRel64BlockAddress: {
+ // EK_GPRel64BlockAddress - Each entry is an address of block, encoded
+ // with a relocation as gp-relative, e.g.:
+ // .gpdword LBB123
+ MCSymbol *MBBSym = MBB->getSymbol();
+ OutStreamer.EmitGPRel64Value(MCSymbolRefExpr::Create(MBBSym, OutContext));
+ return;
+ }
+
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
assert(Value && "Unknown entry kind!");
- unsigned EntrySize = MJTI->getEntrySize(*TM.getTargetData());
- OutStreamer.EmitValue(Value, EntrySize, /*addrspace*/0);
+ unsigned EntrySize = MJTI->getEntrySize(*TM.getDataLayout());
+ OutStreamer.EmitValue(Value, EntrySize);
}
bool AsmPrinter::EmitSpecialLLVMGlobal(const GlobalVariable *GV) {
if (GV->getName() == "llvm.used") {
if (MAI->hasNoDeadStrip()) // No need to emit this at all.
- EmitLLVMUsedList(GV->getInitializer());
+ EmitLLVMUsedList(cast<ConstantArray>(GV->getInitializer()));
return true;
}
return true;
}
+ if (GV->getName() == "llvm.tls_init_funcs") {
+ EmitTLSInitFuncs(cast<ConstantArray>(GV->getInitializer()));
+ return true;
+ }
+
return false;
}
/// EmitLLVMUsedList - For targets that define a MAI::UsedDirective, mark each
/// global in the specified llvm.used list for which emitUsedDirectiveFor
/// is true, as being used with this directive.
-void AsmPrinter::EmitLLVMUsedList(const Constant *List) {
+void AsmPrinter::EmitLLVMUsedList(const ConstantArray *InitList) {
// Should be an array of 'i8*'.
- const ConstantArray *InitList = dyn_cast<ConstantArray>(List);
- if (InitList == 0) return;
-
for (unsigned i = 0, e = InitList->getNumOperands(); i != e; ++i) {
const GlobalValue *GV =
dyn_cast<GlobalValue>(InitList->getOperand(i)->stripPointerCasts());
}
// Emit the function pointers in the target-specific order
- const TargetData *TD = TM.getTargetData();
+ const DataLayout *TD = TM.getDataLayout();
unsigned Align = Log2_32(TD->getPointerPrefAlignment());
std::stable_sort(Structors.begin(), Structors.end(), priority_order);
for (unsigned i = 0, e = Structors.size(); i != e; ++i) {
}
}
+/// EmitTLSInitFuncs - Emit the TLS initialization functions.
+void AsmPrinter::EmitTLSInitFuncs(const ConstantArray *InitList) {
+ const DataLayout *TD = TM.getDataLayout();
+ OutStreamer.SwitchSection(getObjFileLowering().getTLSThreadInitSection());
+ EmitAlignment(Log2_32(TD->getPointerPrefAlignment()));
+ for (unsigned I = 0, E = InitList->getNumOperands(); I != E; ++I)
+ EmitGlobalConstant(
+ dyn_cast<Constant>(InitList->getOperand(I)->stripPointerCasts()));
+}
+
//===--------------------------------------------------------------------===//
// Emission and print routines
//
/// EmitInt8 - Emit a byte directive and value.
///
void AsmPrinter::EmitInt8(int Value) const {
- OutStreamer.EmitIntValue(Value, 1, 0/*addrspace*/);
+ OutStreamer.EmitIntValue(Value, 1);
}
/// EmitInt16 - Emit a short directive and value.
///
void AsmPrinter::EmitInt16(int Value) const {
- OutStreamer.EmitIntValue(Value, 2, 0/*addrspace*/);
+ OutStreamer.EmitIntValue(Value, 2);
}
/// EmitInt32 - Emit a long directive and value.
///
void AsmPrinter::EmitInt32(int Value) const {
- OutStreamer.EmitIntValue(Value, 4, 0/*addrspace*/);
+ OutStreamer.EmitIntValue(Value, 4);
}
/// EmitLabelDifference - Emit something like ".long Hi-Lo" where the size
OutContext);
if (!MAI->hasSetDirective()) {
- OutStreamer.EmitValue(Diff, Size, 0/*AddrSpace*/);
+ OutStreamer.EmitValue(Diff, Size);
return;
}
// Otherwise, emit with .set (aka assignment).
MCSymbol *SetLabel = GetTempSymbol("set", SetCounter++);
OutStreamer.EmitAssignment(SetLabel, Diff);
- OutStreamer.EmitSymbolValue(SetLabel, Size, 0/*AddrSpace*/);
+ OutStreamer.EmitSymbolValue(SetLabel, Size);
}
/// EmitLabelOffsetDifference - Emit something like ".long Hi+Offset-Lo"
OutContext);
if (!MAI->hasSetDirective())
- OutStreamer.EmitValue(Diff, 4, 0/*AddrSpace*/);
+ OutStreamer.EmitValue(Diff, 4);
else {
// Otherwise, emit with .set (aka assignment).
MCSymbol *SetLabel = GetTempSymbol("set", SetCounter++);
OutStreamer.EmitAssignment(SetLabel, Diff);
- OutStreamer.EmitSymbolValue(SetLabel, 4, 0/*AddrSpace*/);
+ OutStreamer.EmitSymbolValue(SetLabel, 4);
}
}
unsigned Size)
const {
- // Emit Label+Offset
- const MCExpr *Plus =
- MCBinaryExpr::CreateAdd(MCSymbolRefExpr::Create(Label, OutContext),
- MCConstantExpr::Create(Offset, OutContext),
- OutContext);
+ // 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);
- OutStreamer.EmitValue(Plus, 4, 0/*AddrSpace*/);
+ OutStreamer.EmitValue(Expr, Size);
}
// if required for correctness.
//
void AsmPrinter::EmitAlignment(unsigned NumBits, const GlobalValue *GV) const {
- if (GV) NumBits = getGVAlignmentLog2(GV, *TM.getTargetData(), NumBits);
+ if (GV) NumBits = getGVAlignmentLog2(GV, *TM.getDataLayout(), NumBits);
if (NumBits == 0) return; // 1-byte aligned: no need to emit alignment.
// Constant emission.
//===----------------------------------------------------------------------===//
-/// LowerConstant - Lower the specified LLVM Constant to an MCExpr.
+/// lowerConstant - Lower the specified LLVM Constant to an MCExpr.
///
-static const MCExpr *LowerConstant(const Constant *CV, AsmPrinter &AP) {
+static const MCExpr *lowerConstant(const Constant *CV, AsmPrinter &AP) {
MCContext &Ctx = AP.OutContext;
if (CV->isNullValue() || isa<UndefValue>(CV))
switch (CE->getOpcode()) {
default:
// If the code isn't optimized, there may be outstanding folding
- // opportunities. Attempt to fold the expression using TargetData as a
+ // opportunities. Attempt to fold the expression using DataLayout as a
// last resort before giving up.
if (Constant *C =
- ConstantFoldConstantExpression(CE, AP.TM.getTargetData()))
+ ConstantFoldConstantExpression(CE, AP.TM.getDataLayout()))
if (C != CE)
- return LowerConstant(C, AP);
+ return lowerConstant(C, AP);
// Otherwise report the problem to the user.
{
report_fatal_error(OS.str());
}
case Instruction::GetElementPtr: {
- const TargetData &TD = *AP.TM.getTargetData();
+ const DataLayout &TD = *AP.TM.getDataLayout();
// Generate a symbolic expression for the byte address
- const Constant *PtrVal = CE->getOperand(0);
- SmallVector<Value*, 8> IdxVec(CE->op_begin()+1, CE->op_end());
- int64_t Offset = TD.getIndexedOffset(PtrVal->getType(), IdxVec);
+ APInt OffsetAI(TD.getPointerSizeInBits(), 0);
+ cast<GEPOperator>(CE)->accumulateConstantOffset(TD, OffsetAI);
- const MCExpr *Base = LowerConstant(CE->getOperand(0), AP);
- if (Offset == 0)
+ const MCExpr *Base = lowerConstant(CE->getOperand(0), AP);
+ if (!OffsetAI)
return Base;
- // Truncate/sext the offset to the pointer size.
- if (TD.getPointerSizeInBits() != 64) {
- int SExtAmount = 64-TD.getPointerSizeInBits();
- Offset = (Offset << SExtAmount) >> SExtAmount;
- }
-
+ int64_t Offset = OffsetAI.getSExtValue();
return MCBinaryExpr::CreateAdd(Base, MCConstantExpr::Create(Offset, Ctx),
Ctx);
}
// is reasonable to treat their delta as a 32-bit value.
// FALL THROUGH.
case Instruction::BitCast:
- return LowerConstant(CE->getOperand(0), AP);
+ return lowerConstant(CE->getOperand(0), AP);
case Instruction::IntToPtr: {
- const TargetData &TD = *AP.TM.getTargetData();
+ const DataLayout &TD = *AP.TM.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);
Op = ConstantExpr::getIntegerCast(Op, TD.getIntPtrType(CV->getContext()),
false/*ZExt*/);
- return LowerConstant(Op, AP);
+ return lowerConstant(Op, AP);
}
case Instruction::PtrToInt: {
- const TargetData &TD = *AP.TM.getTargetData();
+ const DataLayout &TD = *AP.TM.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);
Type *Ty = CE->getType();
- const MCExpr *OpExpr = LowerConstant(Op, AP);
+ const MCExpr *OpExpr = lowerConstant(Op, AP);
// We can emit the pointer value into this slot if the slot is an
// integer slot equal to the size of the pointer.
case Instruction::And:
case Instruction::Or:
case Instruction::Xor: {
- const MCExpr *LHS = LowerConstant(CE->getOperand(0), AP);
- const MCExpr *RHS = LowerConstant(CE->getOperand(1), AP);
+ const MCExpr *LHS = lowerConstant(CE->getOperand(0), AP);
+ const MCExpr *RHS = lowerConstant(CE->getOperand(1), AP);
switch (CE->getOpcode()) {
default: llvm_unreachable("Unknown binary operator constant cast expr");
case Instruction::Add: return MCBinaryExpr::CreateAdd(LHS, RHS, Ctx);
}
}
-static void EmitGlobalConstantImpl(const Constant *C, unsigned AddrSpace,
+static void emitGlobalConstantImpl(const Constant *C, unsigned AddrSpace,
AsmPrinter &AP);
/// isRepeatedByteSequence - Determine whether the given value is
char C = Data[0];
for (unsigned i = 1, e = Data.size(); i != e; ++i)
if (Data[i] != C) return -1;
- return C;
+ return static_cast<uint8_t>(C); // Ensure 255 is not returned as -1.
}
if (const ConstantInt *CI = dyn_cast<ConstantInt>(V)) {
if (CI->getBitWidth() > 64) return -1;
- uint64_t Size = TM.getTargetData()->getTypeAllocSize(V->getType());
+ uint64_t Size = TM.getDataLayout()->getTypeAllocSize(V->getType());
uint64_t Value = CI->getZExtValue();
// Make sure the constant is at least 8 bits long and has a power
}
return Byte;
}
-
+
if (const ConstantDataSequential *CDS = dyn_cast<ConstantDataSequential>(V))
return isRepeatedByteSequence(CDS);
return -1;
}
-static void EmitGlobalConstantDataSequential(const ConstantDataSequential *CDS,
+static void emitGlobalConstantDataSequential(const ConstantDataSequential *CDS,
unsigned AddrSpace,AsmPrinter &AP){
-
+
// 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.getTargetData()->getTypeAllocSize(CDS->getType());
- return AP.OutStreamer.EmitFill(Bytes, Value, AddrSpace);
+ uint64_t Bytes = AP.TM.getDataLayout()->getTypeAllocSize(CDS->getType());
+ // Don't emit a 1-byte object as a .fill.
+ if (Bytes > 1)
+ return AP.OutStreamer.EmitFill(Bytes, Value, AddrSpace);
}
-
+
// If this can be emitted with .ascii/.asciz, emit it as such.
if (CDS->isString())
return AP.OutStreamer.EmitBytes(CDS->getAsString(), AddrSpace);
float F;
uint32_t I;
};
-
+
F = CDS->getElementAsFloat(i);
if (AP.isVerbose())
AP.OutStreamer.GetCommentOS() << "float " << F << '\n';
double F;
uint64_t I;
};
-
+
F = CDS->getElementAsDouble(i);
if (AP.isVerbose())
AP.OutStreamer.GetCommentOS() << "double " << F << '\n';
}
}
- const TargetData &TD = *AP.TM.getTargetData();
+ const DataLayout &TD = *AP.TM.getDataLayout();
unsigned Size = TD.getTypeAllocSize(CDS->getType());
unsigned EmittedSize = TD.getTypeAllocSize(CDS->getType()->getElementType()) *
CDS->getNumElements();
}
-static void EmitGlobalConstantArray(const ConstantArray *CA, unsigned AddrSpace,
+static void emitGlobalConstantArray(const ConstantArray *CA, unsigned AddrSpace,
AsmPrinter &AP) {
- if (AddrSpace != 0 || !CA->isString()) {
- // Not a string. Print the values in successive locations.
-
- // See if we can aggregate some values. Make sure it can be
- // represented as a series of bytes of the constant value.
- int Value = isRepeatedByteSequence(CA, AP.TM);
+ // See if we can aggregate some values. Make sure it can be
+ // represented as a series of bytes of the constant value.
+ int Value = isRepeatedByteSequence(CA, AP.TM);
- if (Value != -1) {
- uint64_t Bytes = AP.TM.getTargetData()->getTypeAllocSize(CA->getType());
- AP.OutStreamer.EmitFill(Bytes, Value, AddrSpace);
- }
- else {
- for (unsigned i = 0, e = CA->getNumOperands(); i != e; ++i)
- EmitGlobalConstantImpl(CA->getOperand(i), AddrSpace, AP);
- }
- return;
+ if (Value != -1) {
+ uint64_t Bytes = AP.TM.getDataLayout()->getTypeAllocSize(CA->getType());
+ AP.OutStreamer.EmitFill(Bytes, Value, AddrSpace);
+ }
+ else {
+ for (unsigned i = 0, e = CA->getNumOperands(); i != e; ++i)
+ emitGlobalConstantImpl(CA->getOperand(i), AddrSpace, AP);
}
-
- // Otherwise, it can be emitted as .ascii.
- SmallVector<char, 128> TmpVec;
- TmpVec.reserve(CA->getNumOperands());
- for (unsigned i = 0, e = CA->getNumOperands(); i != e; ++i)
- TmpVec.push_back(cast<ConstantInt>(CA->getOperand(i))->getZExtValue());
-
- AP.OutStreamer.EmitBytes(StringRef(TmpVec.data(), TmpVec.size()), AddrSpace);
}
-static void EmitGlobalConstantVector(const ConstantVector *CV,
+static void emitGlobalConstantVector(const ConstantVector *CV,
unsigned AddrSpace, AsmPrinter &AP) {
for (unsigned i = 0, e = CV->getType()->getNumElements(); i != e; ++i)
- EmitGlobalConstantImpl(CV->getOperand(i), AddrSpace, AP);
+ emitGlobalConstantImpl(CV->getOperand(i), AddrSpace, AP);
- const TargetData &TD = *AP.TM.getTargetData();
+ const DataLayout &TD = *AP.TM.getDataLayout();
unsigned Size = TD.getTypeAllocSize(CV->getType());
unsigned EmittedSize = TD.getTypeAllocSize(CV->getType()->getElementType()) *
CV->getType()->getNumElements();
AP.OutStreamer.EmitZeros(Padding, AddrSpace);
}
-static void EmitGlobalConstantStruct(const ConstantStruct *CS,
+static void emitGlobalConstantStruct(const ConstantStruct *CS,
unsigned AddrSpace, AsmPrinter &AP) {
// Print the fields in successive locations. Pad to align if needed!
- const TargetData *TD = AP.TM.getTargetData();
+ const DataLayout *TD = AP.TM.getDataLayout();
unsigned Size = TD->getTypeAllocSize(CS->getType());
const StructLayout *Layout = TD->getStructLayout(CS->getType());
uint64_t SizeSoFar = 0;
SizeSoFar += FieldSize + PadSize;
// Now print the actual field value.
- EmitGlobalConstantImpl(Field, AddrSpace, AP);
+ emitGlobalConstantImpl(Field, AddrSpace, AP);
// Insert padding - this may include padding to increase the size of the
// current field up to the ABI size (if the struct is not packed) as well
"Layout of constant struct may be incorrect!");
}
-static void EmitGlobalConstantFP(const ConstantFP *CFP, unsigned AddrSpace,
+static void emitGlobalConstantFP(const ConstantFP *CFP, unsigned AddrSpace,
AsmPrinter &AP) {
- if (CFP->getType()->isHalfTy()) {
- if (AP.isVerbose()) {
- SmallString<10> Str;
- CFP->getValueAPF().toString(Str);
- AP.OutStreamer.GetCommentOS() << "half " << Str << '\n';
- }
- uint64_t Val = CFP->getValueAPF().bitcastToAPInt().getZExtValue();
- AP.OutStreamer.EmitIntValue(Val, 2, AddrSpace);
- return;
- }
-
- if (CFP->getType()->isFloatTy()) {
- if (AP.isVerbose()) {
- float Val = CFP->getValueAPF().convertToFloat();
- AP.OutStreamer.GetCommentOS() << "float " << Val << '\n';
- }
- uint64_t Val = CFP->getValueAPF().bitcastToAPInt().getZExtValue();
- AP.OutStreamer.EmitIntValue(Val, 4, AddrSpace);
- return;
- }
+ APInt API = CFP->getValueAPF().bitcastToAPInt();
- // FP Constants are printed as integer constants to avoid losing
- // precision.
- if (CFP->getType()->isDoubleTy()) {
- if (AP.isVerbose()) {
- double Val = CFP->getValueAPF().convertToDouble();
- AP.OutStreamer.GetCommentOS() << "double " << Val << '\n';
- }
+ // First print a comment with what we think the original floating-point value
+ // should have been.
+ if (AP.isVerbose()) {
+ SmallString<8> StrVal;
+ CFP->getValueAPF().toString(StrVal);
- uint64_t Val = CFP->getValueAPF().bitcastToAPInt().getZExtValue();
- AP.OutStreamer.EmitIntValue(Val, 8, AddrSpace);
- return;
+ CFP->getType()->print(AP.OutStreamer.GetCommentOS());
+ AP.OutStreamer.GetCommentOS() << ' ' << StrVal << '\n';
}
- if (CFP->getType()->isX86_FP80Ty()) {
- // all long double variants are printed as hex
- // API needed to prevent premature destruction
- APInt API = CFP->getValueAPF().bitcastToAPInt();
- const uint64_t *p = API.getRawData();
- if (AP.isVerbose()) {
- // Convert to double so we can print the approximate val as a comment.
- APFloat DoubleVal = CFP->getValueAPF();
- bool ignored;
- DoubleVal.convert(APFloat::IEEEdouble, APFloat::rmNearestTiesToEven,
- &ignored);
- AP.OutStreamer.GetCommentOS() << "x86_fp80 ~= "
- << DoubleVal.convertToDouble() << '\n';
- }
+ // Now iterate through the APInt chunks, emitting them in endian-correct
+ // order, possibly with a smaller chunk at beginning/end (e.g. for x87 80-bit
+ // floats).
+ unsigned NumBytes = API.getBitWidth() / 8;
+ unsigned TrailingBytes = NumBytes % sizeof(uint64_t);
+ const uint64_t *p = API.getRawData();
- if (AP.TM.getTargetData()->isBigEndian()) {
- AP.OutStreamer.EmitIntValue(p[1], 2, AddrSpace);
- AP.OutStreamer.EmitIntValue(p[0], 8, AddrSpace);
- } else {
- AP.OutStreamer.EmitIntValue(p[0], 8, AddrSpace);
- AP.OutStreamer.EmitIntValue(p[1], 2, AddrSpace);
- }
+ // 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()) {
+ int Chunk = API.getNumWords() - 1;
- // Emit the tail padding for the long double.
- const TargetData &TD = *AP.TM.getTargetData();
- AP.OutStreamer.EmitZeros(TD.getTypeAllocSize(CFP->getType()) -
- TD.getTypeStoreSize(CFP->getType()), AddrSpace);
- return;
- }
+ if (TrailingBytes)
+ AP.OutStreamer.EmitIntValue(p[Chunk--], TrailingBytes, AddrSpace);
- assert(CFP->getType()->isPPC_FP128Ty() &&
- "Floating point constant type not handled");
- // All long double variants are printed as hex
- // API needed to prevent premature destruction.
- APInt API = CFP->getValueAPF().bitcastToAPInt();
- const uint64_t *p = API.getRawData();
- if (AP.TM.getTargetData()->isBigEndian()) {
- AP.OutStreamer.EmitIntValue(p[0], 8, AddrSpace);
- AP.OutStreamer.EmitIntValue(p[1], 8, AddrSpace);
+ for (; Chunk >= 0; --Chunk)
+ AP.OutStreamer.EmitIntValue(p[Chunk], sizeof(uint64_t), AddrSpace);
} else {
- AP.OutStreamer.EmitIntValue(p[1], 8, AddrSpace);
- AP.OutStreamer.EmitIntValue(p[0], 8, AddrSpace);
+ unsigned Chunk;
+ for (Chunk = 0; Chunk < NumBytes / sizeof(uint64_t); ++Chunk)
+ AP.OutStreamer.EmitIntValue(p[Chunk], sizeof(uint64_t), AddrSpace);
+
+ if (TrailingBytes)
+ AP.OutStreamer.EmitIntValue(p[Chunk], TrailingBytes, AddrSpace);
}
+
+ // Emit the tail padding for the long double.
+ const DataLayout &TD = *AP.TM.getDataLayout();
+ AP.OutStreamer.EmitZeros(TD.getTypeAllocSize(CFP->getType()) -
+ TD.getTypeStoreSize(CFP->getType()), AddrSpace);
}
-static void EmitGlobalConstantLargeInt(const ConstantInt *CI,
+static void emitGlobalConstantLargeInt(const ConstantInt *CI,
unsigned AddrSpace, AsmPrinter &AP) {
- const TargetData *TD = AP.TM.getTargetData();
+ const DataLayout *TD = AP.TM.getDataLayout();
unsigned BitWidth = CI->getBitWidth();
assert((BitWidth & 63) == 0 && "only support multiples of 64-bits");
}
}
-static void EmitGlobalConstantImpl(const Constant *CV, unsigned AddrSpace,
+static void emitGlobalConstantImpl(const Constant *CV, unsigned AddrSpace,
AsmPrinter &AP) {
- if (isa<ConstantAggregateZero>(CV) || isa<UndefValue>(CV)) {
- uint64_t Size = AP.TM.getTargetData()->getTypeAllocSize(CV->getType());
+ const DataLayout *TD = AP.TM.getDataLayout();
+ uint64_t Size = TD->getTypeAllocSize(CV->getType());
+ if (isa<ConstantAggregateZero>(CV) || isa<UndefValue>(CV))
return AP.OutStreamer.EmitZeros(Size, AddrSpace);
- }
if (const ConstantInt *CI = dyn_cast<ConstantInt>(CV)) {
- unsigned Size = AP.TM.getTargetData()->getTypeAllocSize(CV->getType());
switch (Size) {
case 1:
case 2:
AP.OutStreamer.EmitIntValue(CI->getZExtValue(), Size, AddrSpace);
return;
default:
- EmitGlobalConstantLargeInt(CI, AddrSpace, AP);
+ emitGlobalConstantLargeInt(CI, AddrSpace, AP);
return;
}
}
if (const ConstantFP *CFP = dyn_cast<ConstantFP>(CV))
- return EmitGlobalConstantFP(CFP, AddrSpace, AP);
+ return emitGlobalConstantFP(CFP, AddrSpace, AP);
if (isa<ConstantPointerNull>(CV)) {
- unsigned Size = AP.TM.getTargetData()->getTypeAllocSize(CV->getType());
AP.OutStreamer.EmitIntValue(0, Size, AddrSpace);
return;
}
if (const ConstantDataSequential *CDS = dyn_cast<ConstantDataSequential>(CV))
- return EmitGlobalConstantDataSequential(CDS, AddrSpace, AP);
-
+ return emitGlobalConstantDataSequential(CDS, AddrSpace, AP);
+
if (const ConstantArray *CVA = dyn_cast<ConstantArray>(CV))
- return EmitGlobalConstantArray(CVA, AddrSpace, AP);
+ return emitGlobalConstantArray(CVA, AddrSpace, AP);
if (const ConstantStruct *CVS = dyn_cast<ConstantStruct>(CV))
- return EmitGlobalConstantStruct(CVS, AddrSpace, AP);
+ return emitGlobalConstantStruct(CVS, AddrSpace, AP);
- // Look through bitcasts, which might not be able to be MCExpr'ized (e.g. of
- // vectors).
- if (const ConstantExpr *CE = dyn_cast<ConstantExpr>(CV))
+ if (const ConstantExpr *CE = dyn_cast<ConstantExpr>(CV)) {
+ // Look through bitcasts, which might not be able to be MCExpr'ized (e.g. of
+ // vectors).
if (CE->getOpcode() == Instruction::BitCast)
- return EmitGlobalConstantImpl(CE->getOperand(0), AddrSpace, AP);
-
+ return emitGlobalConstantImpl(CE->getOperand(0), AddrSpace, AP);
+
+ if (Size > 8) {
+ // If the constant expression's size is greater than 64-bits, then we have
+ // to emit the value in chunks. Try to constant fold the value and emit it
+ // that way.
+ Constant *New = ConstantFoldConstantExpression(CE, TD);
+ if (New && New != CE)
+ return emitGlobalConstantImpl(New, AddrSpace, AP);
+ }
+ }
+
if (const ConstantVector *V = dyn_cast<ConstantVector>(CV))
- return EmitGlobalConstantVector(V, AddrSpace, AP);
-
+ return emitGlobalConstantVector(V, AddrSpace, AP);
+
// Otherwise, it must be a ConstantExpr. Lower it to an MCExpr, then emit it
// thread the streamer with EmitValue.
- AP.OutStreamer.EmitValue(LowerConstant(CV, AP),
- AP.TM.getTargetData()->getTypeAllocSize(CV->getType()),
- AddrSpace);
+ AP.OutStreamer.EmitValue(lowerConstant(CV, AP), Size, AddrSpace);
}
/// EmitGlobalConstant - Print a general LLVM constant to the .s file.
void AsmPrinter::EmitGlobalConstant(const Constant *CV, unsigned AddrSpace) {
- uint64_t Size = TM.getTargetData()->getTypeAllocSize(CV->getType());
+ uint64_t Size = TM.getDataLayout()->getTypeAllocSize(CV->getType());
if (Size)
- EmitGlobalConstantImpl(CV, AddrSpace, *this);
+ emitGlobalConstantImpl(CV, AddrSpace, *this);
else if (MAI->hasSubsectionsViaSymbols()) {
// If the global has zero size, emit a single byte so that two labels don't
// look like they are at the same location.
}
}
-/// EmitBasicBlockLoopComments - Pretty-print comments for basic blocks.
-static void EmitBasicBlockLoopComments(const MachineBasicBlock &MBB,
+/// emitBasicBlockLoopComments - Pretty-print comments for basic blocks.
+static void emitBasicBlockLoopComments(const MachineBasicBlock &MBB,
const MachineLoopInfo *LI,
const AsmPrinter &AP) {
// Add loop depth information
OutStreamer.EmitLabel(Syms[i]);
}
+ // Print some verbose block comments.
+ if (isVerbose()) {
+ if (const BasicBlock *BB = MBB->getBasicBlock())
+ if (BB->hasName())
+ OutStreamer.AddComment("%" + BB->getName());
+ emitBasicBlockLoopComments(*MBB, LI, *this);
+ }
+
// Print the main label for the block.
if (MBB->pred_empty() || isBlockOnlyReachableByFallthrough(MBB)) {
if (isVerbose() && OutStreamer.hasRawTextSupport()) {
- if (const BasicBlock *BB = MBB->getBasicBlock())
- if (BB->hasName())
- OutStreamer.AddComment("%" + BB->getName());
-
- EmitBasicBlockLoopComments(*MBB, LI, *this);
-
// NOTE: Want this comment at start of line, don't emit with AddComment.
OutStreamer.EmitRawText(Twine(MAI->getCommentString()) + " BB#" +
Twine(MBB->getNumber()) + ":");
}
} else {
- if (isVerbose()) {
- if (const BasicBlock *BB = MBB->getBasicBlock())
- if (BB->hasName())
- OutStreamer.AddComment("%" + BB->getName());
- EmitBasicBlockLoopComments(*MBB, LI, *this);
- }
-
OutStreamer.EmitLabel(MBB->getSymbol());
}
}
projects / oota-llvm.git / blobdiff