#include "llvm/Target/TargetLoweringObjectFile.h"
#include "llvm/Target/TargetOptions.h"
#include "llvm/Target/TargetRegisterInfo.h"
+#include "llvm/Target/TargetSubtargetInfo.h"
#include "llvm/Transforms/Utils/GlobalStatus.h"
#include "WinCodeViewLineTables.h"
using namespace llvm;
return *TM.getDataLayout();
}
+const MCSubtargetInfo &AsmPrinter::getSubtargetInfo() const {
+ return TM.getSubtarget<MCSubtargetInfo>();
+}
+
+void AsmPrinter::EmitToStreamer(MCStreamer &S, const MCInst &Inst) {
+ S.EmitInstruction(Inst, getSubtargetInfo());
+}
+
StringRef AsmPrinter::getTargetTriple() const {
return TM.getTargetTriple();
}
return false;
}
+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;
+}
+
void AsmPrinter::EmitLinkage(const GlobalValue *GV, MCSymbol *GVSym) const {
GlobalValue::LinkageTypes Linkage = GV->getLinkage();
switch (Linkage) {
// .globl _foo
OutStreamer.EmitSymbolAttribute(GVSym, MCSA_Global);
- 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)
+ if (!canBeHidden(GV, *MAI))
// .weak_definition _foo
OutStreamer.EmitSymbolAttribute(GVSym, MCSA_WeakDefinition);
else
llvm_unreachable("Unknown linkage type!");
}
+void AsmPrinter::getNameWithPrefix(SmallVectorImpl<char> &Name,
+ const GlobalValue *GV) const {
+ TM.getTargetLowering()->getNameWithPrefix(Name, GV, *Mang);
+}
+
MCSymbol *AsmPrinter::getSymbol(const GlobalValue *GV) const {
- return getObjFileLowering().getSymbol(*Mang, GV);
+ return TM.getTargetLowering()->getSymbol(GV, *Mang);
}
/// EmitGlobalVariable - Emit the specified global variable to the .s file.
// Handle local BSS symbols.
if (MAI->hasMachoZeroFillDirective()) {
const MCSection *TheSection =
- getObjFileLowering().SectionForGlobal(GV, GVKind, Mang, TM);
+ getObjFileLowering().SectionForGlobal(GV, GVKind, *Mang, TM);
// .zerofill __DATA, __bss, _foo, 400, 5
OutStreamer.EmitZerofill(TheSection, GVSym, Size, Align);
return;
}
const MCSection *TheSection =
- getObjFileLowering().SectionForGlobal(GV, GVKind, Mang, TM);
+ getObjFileLowering().SectionForGlobal(GV, GVKind, *Mang, TM);
// Handle the zerofill directive on darwin, which is a special form of BSS
// emission.
// Print the 'header' of function.
const Function *F = MF->getFunction();
- OutStreamer.SwitchSection(getObjFileLowering().SectionForGlobal(F, Mang, TM));
+ OutStreamer.SwitchSection(
+ getObjFileLowering().SectionForGlobal(F, *Mang, TM));
EmitVisibility(CurrentFnSym, F->getVisibility());
EmitLinkage(F, CurrentFnSym);
void AsmPrinter::emitPrologLabel(const MachineInstr &MI) {
const MCSymbol *Label = MI.getOperand(0).getMCSymbol();
- if (MAI->getExceptionHandlingType() != ExceptionHandling::DwarfCFI)
+ ExceptionHandling::ExceptionsType ExceptionHandlingType =
+ MAI->getExceptionHandlingType();
+ if (ExceptionHandlingType != ExceptionHandling::DwarfCFI &&
+ ExceptionHandlingType != ExceptionHandling::ARM)
return;
if (needsCFIMoves() == CFI_M_None)
if (isVerbose()) emitKill(II, *this);
break;
default:
- if (!TM.hasMCUseLoc())
- MCLineEntry::Make(&OutStreamer, getCurrentSection());
-
EmitInstruction(II);
break;
}
TM.getInstrInfo()->getNoopForMachoTarget(Noop);
if (Noop.getOpcode()) {
OutStreamer.AddComment("avoids zero-length function");
- OutStreamer.EmitInstruction(Noop);
+ OutStreamer.EmitInstruction(Noop, getSubtargetInfo());
} else // Target not mc-ized yet.
OutStreamer.EmitRawText(StringRef("\tnop\n"));
}
bool Indirect) const {
const TargetRegisterInfo *TRI = TM.getRegisterInfo();
int Reg = TRI->getDwarfRegNum(MLoc.getReg(), false);
+ bool isSubRegister = Reg < 0;
+ unsigned Idx = 0;
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
+ if (Reg >= 0)
+ Idx = TRI->getSubRegIndex(*SR, MLoc.getReg());
}
// FIXME: Handle cases like a super register being encoded as
// FIXME: We have no reasonable way of handling errors in here. The
// 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 (Reg < 0) {
+ OutStreamer.AddComment("nop (invalid dwarf register number)");
+ EmitInt8(dwarf::DW_OP_nop);
+ return;
+ }
if (MLoc.isIndirect() || Indirect) {
if (Reg < 32) {
}
}
- // FIXME: Produce a DW_OP_bit_piece if we used a superregister
+ // Emit Mask
+ if (isSubRegister) {
+ unsigned Size = TRI->getSubRegIdxSize(Idx);
+ unsigned Offset = TRI->getSubRegIdxOffset(Idx);
+ if (Offset > 0) {
+ OutStreamer.AddComment("DW_OP_bit_piece");
+ EmitInt8(dwarf::DW_OP_bit_piece);
+ OutStreamer.AddComment(Twine(Size));
+ EmitULEB128(Size);
+ OutStreamer.AddComment(Twine(Offset));
+ EmitULEB128(Offset);
+ } else {
+ OutStreamer.AddComment("DW_OP_piece");
+ EmitInt8(dwarf::DW_OP_piece);
+ unsigned ByteSize = Size / 8; // Assuming 8 bits per byte.
+ OutStreamer.AddComment(Twine(ByteSize));
+ EmitULEB128(ByteSize);
+ }
+ }
}
bool AsmPrinter::doFinalization(Module &M) {
SmallVector<Module::ModuleFlagEntry, 8> ModuleFlags;
M.getModuleFlagsMetadata(ModuleFlags);
if (!ModuleFlags.empty())
- getObjFileLowering().emitModuleFlags(OutStreamer, ModuleFlags, Mang, TM);
+ getObjFileLowering().emitModuleFlags(OutStreamer, ModuleFlags, *Mang, TM);
// Make sure we wrote out everything we need.
OutStreamer.Flush();
// FIXME: this isn't the right predicate, should be based on the MCSection
// for the function.
F->isWeakForLinker()) {
- OutStreamer.SwitchSection(getObjFileLowering().SectionForGlobal(F,Mang,TM));
+ OutStreamer.SwitchSection(
+ getObjFileLowering().SectionForGlobal(F, *Mang, TM));
} else {
// Otherwise, drop it in the readonly section.
const MCSection *ReadOnlySection =
for (unsigned i = 0, e = InitList->getNumOperands(); i != e; ++i) {
const GlobalValue *GV =
dyn_cast<GlobalValue>(InitList->getOperand(i)->stripPointerCasts());
- if (GV && getObjFileLowering().shouldEmitUsedDirectiveFor(GV, Mang))
+ if (GV && getObjFileLowering().shouldEmitUsedDirectiveFor(GV, *Mang, TM))
OutStreamer.EmitSymbolAttribute(getSymbol(GV), MCSA_NoDeadStrip);
}
}
if (const NamedMDNode *NMD = M.getNamedMetadata("llvm.ident")) {
for (unsigned i = 0, e = NMD->getNumOperands(); i != e; ++i) {
const MDNode *N = NMD->getOperand(i);
- assert(N->getNumOperands() == 1 &&
+ assert(N->getNumOperands() == 1 &&
"llvm.ident metadata entry can have only one operand");
const MDString *S = cast<MDString>(N->getOperand(0));
OutStreamer.EmitIdent(S->getString());
if (getCurrentSection()->getKind().isText())
OutStreamer.EmitCodeAlignment(1 << NumBits);
else
- OutStreamer.EmitValueToAlignment(1 << NumBits, 0, 1, 0);
+ OutStreamer.EmitValueToAlignment(1 << NumBits);
}
//===----------------------------------------------------------------------===//
}
if (const MCExpr *RelocExpr =
- AP.getObjFileLowering().getExecutableRelativeSymbol(CE, AP.Mang))
+ AP.getObjFileLowering().getExecutableRelativeSymbol(CE, *AP.Mang,
+ AP.TM))
return RelocExpr;
switch (CE->getOpcode()) {
MCSymbol *AsmPrinter::getSymbolWithGlobalValueBase(const GlobalValue *GV,
StringRef Suffix) const {
- return getObjFileLowering().getSymbolWithGlobalValueBase(*Mang, GV, Suffix);
+ return getObjFileLowering().getSymbolWithGlobalValueBase(GV, Suffix, *Mang,
+ TM);
}
/// GetExternalSymbolSymbol - Return the MCSymbol for the specified
// Print the main label for the block.
if (MBB->pred_empty() || isBlockOnlyReachableByFallthrough(MBB)) {
- if (isVerbose() && OutStreamer.hasRawTextSupport()) {
+ if (isVerbose()) {
// NOTE: Want this comment at start of line, don't emit with AddComment.
OutStreamer.emitRawComment(" BB#" + Twine(MBB->getNumber()) + ":", false);
}
projects / oota-llvm.git / blobdiff