diff options
Diffstat (limited to 'contrib/llvm/lib/Target/TargetLoweringObjectFile.cpp')
| -rw-r--r-- | contrib/llvm/lib/Target/TargetLoweringObjectFile.cpp | 69 |
1 files changed, 49 insertions, 20 deletions
diff --git a/contrib/llvm/lib/Target/TargetLoweringObjectFile.cpp b/contrib/llvm/lib/Target/TargetLoweringObjectFile.cpp index f343473..d498bb1 100644 --- a/contrib/llvm/lib/Target/TargetLoweringObjectFile.cpp +++ b/contrib/llvm/lib/Target/TargetLoweringObjectFile.cpp @@ -43,7 +43,7 @@ using namespace llvm; void TargetLoweringObjectFile::Initialize(MCContext &ctx, const TargetMachine &TM) { Ctx = &ctx; - DL = TM.getSubtargetImpl()->getDataLayout(); + DL = TM.getDataLayout(); InitMCObjectFileInfo(TM.getTargetTriple(), TM.getRelocationModel(), TM.getCodeModel(), *Ctx); } @@ -110,7 +110,7 @@ MCSymbol *TargetLoweringObjectFile::getSymbolWithGlobalValueBase( NameStr += DL->getPrivateGlobalPrefix(); TM.getNameWithPrefix(NameStr, GV, Mang); NameStr.append(Suffix.begin(), Suffix.end()); - return Ctx->GetOrCreateSymbol(NameStr.str()); + return Ctx->getOrCreateSymbol(NameStr); } MCSymbol *TargetLoweringObjectFile::getCFIPersonalitySymbol( @@ -200,12 +200,12 @@ SectionKind TargetLoweringObjectFile::getKindForGlobal(const GlobalValue *GV, // Otherwise, just drop it into a mergable constant section. If we have // a section for this size, use it, otherwise use the arbitrary sized // mergable section. - switch (TM.getSubtargetImpl()->getDataLayout()->getTypeAllocSize( - C->getType())) { + switch (TM.getDataLayout()->getTypeAllocSize(C->getType())) { case 4: return SectionKind::getMergeableConst4(); case 8: return SectionKind::getMergeableConst8(); case 16: return SectionKind::getMergeableConst16(); - default: return SectionKind::getMergeableConst(); + default: + return SectionKind::getReadOnly(); } case Constant::LocalRelocation: @@ -255,12 +255,13 @@ SectionKind TargetLoweringObjectFile::getKindForGlobal(const GlobalValue *GV, llvm_unreachable("Invalid relocation"); } -/// SectionForGlobal - This method computes the appropriate section to emit -/// the specified global variable or function definition. This should not -/// be passed external (or available externally) globals. -const MCSection *TargetLoweringObjectFile:: -SectionForGlobal(const GlobalValue *GV, SectionKind Kind, Mangler &Mang, - const TargetMachine &TM) const { +/// This method computes the appropriate section to emit the specified global +/// variable or function definition. This should not be passed external (or +/// available externally) globals. +MCSection * +TargetLoweringObjectFile::SectionForGlobal(const GlobalValue *GV, + SectionKind Kind, Mangler &Mang, + const TargetMachine &TM) const { // Select section name. if (GV->hasSection()) return getExplicitSectionGlobal(GV, Kind, Mang, TM); @@ -270,10 +271,32 @@ SectionForGlobal(const GlobalValue *GV, SectionKind Kind, Mangler &Mang, return SelectSectionForGlobal(GV, Kind, Mang, TM); } -/// getSectionForConstant - Given a mergable constant with the -/// specified size and relocation information, return a section that it -/// should be placed in. -const MCSection * +MCSection *TargetLoweringObjectFile::getSectionForJumpTable( + const Function &F, Mangler &Mang, const TargetMachine &TM) const { + return getSectionForConstant(SectionKind::getReadOnly(), /*C=*/nullptr); +} + +bool TargetLoweringObjectFile::shouldPutJumpTableInFunctionSection( + bool UsesLabelDifference, const Function &F) const { + // In PIC mode, we need to emit the jump table to the same section as the + // function body itself, otherwise the label differences won't make sense. + // FIXME: Need a better predicate for this: what about custom entries? + if (UsesLabelDifference) + return true; + + // We should also do if the section name is NULL or function is declared + // in discardable section + // FIXME: this isn't the right predicate, should be based on the MCSection + // for the function. + if (F.isWeakForLinker()) + return true; + + return false; +} + +/// Given a mergable constant with the specified size and relocation +/// information, return a section that it should be placed in. +MCSection * TargetLoweringObjectFile::getSectionForConstant(SectionKind Kind, const Constant *C) const { if (Kind.isReadOnly() && ReadOnlySection != nullptr) @@ -290,7 +313,7 @@ const MCExpr *TargetLoweringObjectFile::getTTypeGlobalReference( const TargetMachine &TM, MachineModuleInfo *MMI, MCStreamer &Streamer) const { const MCSymbolRefExpr *Ref = - MCSymbolRefExpr::Create(TM.getSymbol(GV, Mang), getContext()); + MCSymbolRefExpr::create(TM.getSymbol(GV, Mang), getContext()); return getTTypeReference(Ref, Encoding, Streamer); } @@ -307,10 +330,10 @@ getTTypeReference(const MCSymbolRefExpr *Sym, unsigned Encoding, case dwarf::DW_EH_PE_pcrel: { // Emit a label to the streamer for the current position. This gives us // .-foo addressing. - MCSymbol *PCSym = getContext().CreateTempSymbol(); + MCSymbol *PCSym = getContext().createTempSymbol(); Streamer.EmitLabel(PCSym); - const MCExpr *PC = MCSymbolRefExpr::Create(PCSym, getContext()); - return MCBinaryExpr::CreateSub(Sym, PC, getContext()); + const MCExpr *PC = MCSymbolRefExpr::create(PCSym, getContext()); + return MCBinaryExpr::createSub(Sym, PC, getContext()); } } } @@ -318,5 +341,11 @@ getTTypeReference(const MCSymbolRefExpr *Sym, unsigned Encoding, const MCExpr *TargetLoweringObjectFile::getDebugThreadLocalSymbol(const MCSymbol *Sym) const { // FIXME: It's not clear what, if any, default this should have - perhaps a // null return could mean 'no location' & we should just do that here. - return MCSymbolRefExpr::Create(Sym, *Ctx); + return MCSymbolRefExpr::create(Sym, *Ctx); +} + +void TargetLoweringObjectFile::getNameWithPrefix( + SmallVectorImpl<char> &OutName, const GlobalValue *GV, + bool CannotUsePrivateLabel, Mangler &Mang, const TargetMachine &TM) const { + Mang.getNameWithPrefix(OutName, GV, CannotUsePrivateLabel); } |
