diff options
Diffstat (limited to 'contrib/llvm/lib/Target/ARM/ARMAsmPrinter.cpp')
| -rw-r--r-- | contrib/llvm/lib/Target/ARM/ARMAsmPrinter.cpp | 119 |
1 files changed, 72 insertions, 47 deletions
diff --git a/contrib/llvm/lib/Target/ARM/ARMAsmPrinter.cpp b/contrib/llvm/lib/Target/ARM/ARMAsmPrinter.cpp index 738dded..206db96 100644 --- a/contrib/llvm/lib/Target/ARM/ARMAsmPrinter.cpp +++ b/contrib/llvm/lib/Target/ARM/ARMAsmPrinter.cpp @@ -60,7 +60,7 @@ using namespace llvm; ARMAsmPrinter::ARMAsmPrinter(TargetMachine &TM, std::unique_ptr<MCStreamer> Streamer) : AsmPrinter(TM, std::move(Streamer)), AFI(nullptr), MCP(nullptr), - InConstantPool(false) {} + InConstantPool(false), OptimizationGoals(-1) {} void ARMAsmPrinter::EmitFunctionBodyEnd() { // Make sure to terminate any constant pools that were at the end @@ -80,8 +80,8 @@ void ARMAsmPrinter::EmitFunctionEntryLabel() { OutStreamer->EmitLabel(CurrentFnSym); } -void ARMAsmPrinter::EmitXXStructor(const Constant *CV) { - uint64_t Size = TM.getDataLayout()->getTypeAllocSize(CV->getType()); +void ARMAsmPrinter::EmitXXStructor(const DataLayout &DL, const Constant *CV) { + uint64_t Size = getDataLayout().getTypeAllocSize(CV->getType()); assert(Size && "C++ constructor pointer had zero size!"); const GlobalValue *GV = dyn_cast<GlobalValue>(CV->stripPointerCasts()); @@ -106,9 +106,38 @@ bool ARMAsmPrinter::runOnMachineFunction(MachineFunction &MF) { Subtarget = &MF.getSubtarget<ARMSubtarget>(); SetupMachineFunction(MF); + const Function* F = MF.getFunction(); + const TargetMachine& TM = MF.getTarget(); + + // Calculate this function's optimization goal. + unsigned OptimizationGoal; + if (F->hasFnAttribute(Attribute::OptimizeNone)) + // For best debugging illusion, speed and small size sacrificed + OptimizationGoal = 6; + else if (F->optForMinSize()) + // Aggressively for small size, speed and debug illusion sacrificed + OptimizationGoal = 4; + else if (F->optForSize()) + // For small size, but speed and debugging illusion preserved + OptimizationGoal = 3; + else if (TM.getOptLevel() == CodeGenOpt::Aggressive) + // Aggressively for speed, small size and debug illusion sacrificed + OptimizationGoal = 2; + else if (TM.getOptLevel() > CodeGenOpt::None) + // For speed, but small size and good debug illusion preserved + OptimizationGoal = 1; + else // TM.getOptLevel() == CodeGenOpt::None + // For good debugging, but speed and small size preserved + OptimizationGoal = 5; + + // Combine a new optimization goal with existing ones. + if (OptimizationGoals == -1) // uninitialized goals + OptimizationGoals = OptimizationGoal; + else if (OptimizationGoals != (int)OptimizationGoal) // conflicting goals + OptimizationGoals = 0; if (Subtarget->isTargetCOFF()) { - bool Internal = MF.getFunction()->hasInternalLinkage(); + bool Internal = F->hasInternalLinkage(); COFF::SymbolStorageClass Scl = Internal ? COFF::IMAGE_SYM_CLASS_STATIC : COFF::IMAGE_SYM_CLASS_EXTERNAL; int Type = COFF::IMAGE_SYM_DTYPE_FUNCTION << COFF::SCT_COMPLEX_TYPE_SHIFT; @@ -198,22 +227,13 @@ void ARMAsmPrinter::printOperand(const MachineInstr *MI, int OpNum, MCSymbol *ARMAsmPrinter:: GetARMJTIPICJumpTableLabel(unsigned uid) const { - const DataLayout *DL = TM.getDataLayout(); + const DataLayout &DL = getDataLayout(); SmallString<60> Name; - raw_svector_ostream(Name) << DL->getPrivateGlobalPrefix() << "JTI" + raw_svector_ostream(Name) << DL.getPrivateGlobalPrefix() << "JTI" << getFunctionNumber() << '_' << uid; return OutContext.getOrCreateSymbol(Name); } - -MCSymbol *ARMAsmPrinter::GetARMSJLJEHLabel() const { - const DataLayout *DL = TM.getDataLayout(); - SmallString<60> Name; - raw_svector_ostream(Name) << DL->getPrivateGlobalPrefix() << "SJLJEH" - << getFunctionNumber(); - return OutContext.getOrCreateSymbol(Name); -} - bool ARMAsmPrinter::PrintAsmOperand(const MachineInstr *MI, unsigned OpNum, unsigned AsmVariant, const char *ExtraCode, raw_ostream &O) { @@ -515,6 +535,17 @@ void ARMAsmPrinter::EmitEndOfAsmFile(Module &M) { // generates code that does this, it is always safe to set. OutStreamer->EmitAssemblerFlag(MCAF_SubsectionsViaSymbols); } + + // The last attribute to be emitted is ABI_optimization_goals + MCTargetStreamer &TS = *OutStreamer->getTargetStreamer(); + ARMTargetStreamer &ATS = static_cast<ARMTargetStreamer &>(TS); + + if (OptimizationGoals > 0 && + (Subtarget->isTargetAEABI() || Subtarget->isTargetGNUAEABI())) + ATS.emitAttribute(ARMBuildAttrs::ABI_optimization_goals, OptimizationGoals); + OptimizationGoals = -1; + + ATS.finishAttributeSection(); } //===----------------------------------------------------------------------===// @@ -532,7 +563,7 @@ static ARMBuildAttrs::CPUArch getArchForCPU(StringRef CPU, if (Subtarget->hasV8Ops()) return ARMBuildAttrs::v8; else if (Subtarget->hasV7Ops()) { - if (Subtarget->isMClass() && Subtarget->hasThumb2DSP()) + if (Subtarget->isMClass() && Subtarget->hasDSP()) return ARMBuildAttrs::v7E_M; return ARMBuildAttrs::v7; } else if (Subtarget->hasV6T2Ops()) @@ -587,7 +618,7 @@ void ARMAsmPrinter::emitAttributes() { // We consider krait as a "cortex-a9" + hwdiv CPU // Enable hwdiv through ".arch_extension idiv" if (STI.hasDivide() || STI.hasDivideInARMMode()) - ATS.emitArchExtension(ARM::AEK_HWDIV); + ATS.emitArchExtension(ARM::AEK_HWDIV | ARM::AEK_HWDIVARM); } else ATS.emitTextAttribute(ARMBuildAttrs::CPU_name, CPUString); } @@ -807,8 +838,6 @@ void ARMAsmPrinter::emitAttributes() { else if (STI.hasVirtualization()) ATS.emitAttribute(ARMBuildAttrs::Virtualization_use, ARMBuildAttrs::AllowVirtualization); - - ATS.finishAttributeSection(); } //===----------------------------------------------------------------------===// @@ -828,8 +857,7 @@ getModifierVariantKind(ARMCP::ARMCPModifier Modifier) { case ARMCP::TLSGD: return MCSymbolRefExpr::VK_TLSGD; case ARMCP::TPOFF: return MCSymbolRefExpr::VK_TPOFF; case ARMCP::GOTTPOFF: return MCSymbolRefExpr::VK_GOTTPOFF; - case ARMCP::GOT: return MCSymbolRefExpr::VK_GOT; - case ARMCP::GOTOFF: return MCSymbolRefExpr::VK_GOTOFF; + case ARMCP::GOT_PREL: return MCSymbolRefExpr::VK_ARM_GOT_PREL; } llvm_unreachable("Invalid ARMCPModifier!"); } @@ -875,8 +903,8 @@ MCSymbol *ARMAsmPrinter::GetARMGVSymbol(const GlobalValue *GV, void ARMAsmPrinter:: EmitMachineConstantPoolValue(MachineConstantPoolValue *MCPV) { - const DataLayout *DL = TM.getDataLayout(); - int Size = TM.getDataLayout()->getTypeAllocSize(MCPV->getType()); + const DataLayout &DL = getDataLayout(); + int Size = DL.getTypeAllocSize(MCPV->getType()); ARMConstantPoolValue *ACPV = static_cast<ARMConstantPoolValue*>(MCPV); @@ -909,10 +937,9 @@ EmitMachineConstantPoolValue(MachineConstantPoolValue *MCPV) { OutContext); if (ACPV->getPCAdjustment()) { - MCSymbol *PCLabel = getPICLabel(DL->getPrivateGlobalPrefix(), - getFunctionNumber(), - ACPV->getLabelId(), - OutContext); + MCSymbol *PCLabel = + getPICLabel(DL.getPrivateGlobalPrefix(), getFunctionNumber(), + ACPV->getLabelId(), OutContext); const MCExpr *PCRelExpr = MCSymbolRefExpr::create(PCLabel, OutContext); PCRelExpr = MCBinaryExpr::createAdd(PCRelExpr, @@ -1136,6 +1163,7 @@ void ARMAsmPrinter::EmitUnwindingInstruction(const MachineInstr *MI) { Offset = 0; break; case ARM::ADDri: + case ARM::t2ADDri: Offset = -MI->getOperand(2).getImm(); break; case ARM::SUBri: @@ -1198,7 +1226,7 @@ void ARMAsmPrinter::EmitUnwindingInstruction(const MachineInstr *MI) { #include "ARMGenMCPseudoLowering.inc" void ARMAsmPrinter::EmitInstruction(const MachineInstr *MI) { - const DataLayout *DL = TM.getDataLayout(); + const DataLayout &DL = getDataLayout(); // If we just ended a constant pool, mark it as such. if (InConstantPool && MI->getOpcode() != ARM::CONSTPOOL_ENTRY) { @@ -1355,9 +1383,9 @@ void ARMAsmPrinter::EmitInstruction(const MachineInstr *MI) { MCSymbol *GVSym = GetARMGVSymbol(GV, TF); const MCExpr *GVSymExpr = MCSymbolRefExpr::create(GVSym, OutContext); - MCSymbol *LabelSym = getPICLabel(DL->getPrivateGlobalPrefix(), - getFunctionNumber(), - MI->getOperand(2).getImm(), OutContext); + MCSymbol *LabelSym = + getPICLabel(DL.getPrivateGlobalPrefix(), getFunctionNumber(), + MI->getOperand(2).getImm(), OutContext); const MCExpr *LabelSymExpr= MCSymbolRefExpr::create(LabelSym, OutContext); unsigned PCAdj = (Opc == ARM::MOVi16_ga_pcrel) ? 8 : 4; const MCExpr *PCRelExpr = @@ -1388,9 +1416,9 @@ void ARMAsmPrinter::EmitInstruction(const MachineInstr *MI) { MCSymbol *GVSym = GetARMGVSymbol(GV, TF); const MCExpr *GVSymExpr = MCSymbolRefExpr::create(GVSym, OutContext); - MCSymbol *LabelSym = getPICLabel(DL->getPrivateGlobalPrefix(), - getFunctionNumber(), - MI->getOperand(3).getImm(), OutContext); + MCSymbol *LabelSym = + getPICLabel(DL.getPrivateGlobalPrefix(), getFunctionNumber(), + MI->getOperand(3).getImm(), OutContext); const MCExpr *LabelSymExpr= MCSymbolRefExpr::create(LabelSym, OutContext); unsigned PCAdj = (Opc == ARM::MOVTi16_ga_pcrel) ? 8 : 4; const MCExpr *PCRelExpr = @@ -1414,10 +1442,9 @@ void ARMAsmPrinter::EmitInstruction(const MachineInstr *MI) { // This adds the address of LPC0 to r0. // Emit the label. - OutStreamer->EmitLabel(getPICLabel(DL->getPrivateGlobalPrefix(), + OutStreamer->EmitLabel(getPICLabel(DL.getPrivateGlobalPrefix(), getFunctionNumber(), - MI->getOperand(2).getImm(), - OutContext)); + MI->getOperand(2).getImm(), OutContext)); // Form and emit the add. EmitToStreamer(*OutStreamer, MCInstBuilder(ARM::tADDhirr) @@ -1436,10 +1463,9 @@ void ARMAsmPrinter::EmitInstruction(const MachineInstr *MI) { // This adds the address of LPC0 to r0. // Emit the label. - OutStreamer->EmitLabel(getPICLabel(DL->getPrivateGlobalPrefix(), + OutStreamer->EmitLabel(getPICLabel(DL.getPrivateGlobalPrefix(), getFunctionNumber(), - MI->getOperand(2).getImm(), - OutContext)); + MI->getOperand(2).getImm(), OutContext)); // Form and emit the add. EmitToStreamer(*OutStreamer, MCInstBuilder(ARM::ADDrr) @@ -1468,10 +1494,9 @@ void ARMAsmPrinter::EmitInstruction(const MachineInstr *MI) { // a PC-relative address at the ldr instruction. // Emit the label. - OutStreamer->EmitLabel(getPICLabel(DL->getPrivateGlobalPrefix(), + OutStreamer->EmitLabel(getPICLabel(DL.getPrivateGlobalPrefix(), getFunctionNumber(), - MI->getOperand(2).getImm(), - OutContext)); + MI->getOperand(2).getImm(), OutContext)); // Form and emit the load unsigned Opcode; @@ -1519,7 +1544,7 @@ void ARMAsmPrinter::EmitInstruction(const MachineInstr *MI) { if (MCPE.isMachineConstantPoolEntry()) EmitMachineConstantPoolValue(MCPE.Val.MachineCPVal); else - EmitGlobalConstant(MCPE.Val.ConstVal); + EmitGlobalConstant(DL, MCPE.Val.ConstVal); return; } case ARM::JUMPTABLE_ADDRS: @@ -1653,12 +1678,12 @@ void ARMAsmPrinter::EmitInstruction(const MachineInstr *MI) { // adds $val, #7 // str $val, [$src, #4] // movs r0, #0 - // b 1f + // b LSJLJEH // movs r0, #1 - // 1: + // LSJLJEH: unsigned SrcReg = MI->getOperand(0).getReg(); unsigned ValReg = MI->getOperand(1).getReg(); - MCSymbol *Label = GetARMSJLJEHLabel(); + MCSymbol *Label = OutContext.createTempSymbol("SJLJEH", false, true); OutStreamer->AddComment("eh_setjmp begin"); EmitToStreamer(*OutStreamer, MCInstBuilder(ARM::tMOVr) .addReg(ValReg) |
