X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=lib%2FTarget%2FARM%2FAsmPrinter%2FARMAsmPrinter.cpp;h=7e22b62a2607a9de72e11860a76c84443fd40253;hb=d1ff72b8a797304f146e4293db8c814231ea8cb3;hp=f3f86402a554d97ef2490f86647ec0cc95bf129c;hpb=bfcb09688c7db15a9f9415d717a5a31c499a2208;p=oota-llvm.git diff --git a/lib/Target/ARM/AsmPrinter/ARMAsmPrinter.cpp b/lib/Target/ARM/AsmPrinter/ARMAsmPrinter.cpp index f3f86402a55..7e22b62a260 100644 --- a/lib/Target/ARM/AsmPrinter/ARMAsmPrinter.cpp +++ b/lib/Target/ARM/AsmPrinter/ARMAsmPrinter.cpp @@ -43,7 +43,6 @@ #include "llvm/Target/TargetRegistry.h" #include "llvm/ADT/SmallPtrSet.h" #include "llvm/ADT/SmallString.h" -#include "llvm/ADT/Statistic.h" #include "llvm/ADT/StringExtras.h" #include "llvm/ADT/StringSet.h" #include "llvm/Support/CommandLine.h" @@ -53,8 +52,6 @@ #include using namespace llvm; -STATISTIC(EmittedInsts, "Number of machine instrs printed"); - static cl::opt EnableMCInst("enable-arm-mcinst-printer", cl::Hidden, cl::desc("enable experimental asmprinter gunk in the arm backend")); @@ -76,8 +73,9 @@ namespace { public: explicit ARMAsmPrinter(formatted_raw_ostream &O, TargetMachine &TM, - const MCAsmInfo *T, bool V) - : AsmPrinter(O, TM, T, V), AFI(NULL), MCP(NULL) { + MCContext &Ctx, MCStreamer &Streamer, + const MCAsmInfo *T) + : AsmPrinter(O, TM, Ctx, Streamer, T), AFI(NULL), MCP(NULL) { Subtarget = &TM.getSubtarget(); } @@ -162,13 +160,17 @@ namespace { void printInstruction(const MachineInstr *MI); // autogenerated. static const char *getRegisterName(unsigned RegNo); - void printMachineInstruction(const MachineInstr *MI); + virtual void EmitInstruction(const MachineInstr *MI); bool runOnMachineFunction(MachineFunction &F); + + virtual void EmitConstantPool() {} // we emit constant pools customly! + virtual void EmitFunctionEntryLabel(); void EmitStartOfAsmFile(Module &M); void EmitEndOfAsmFile(Module &M); - virtual void printPICJumpTableSetLabel2(unsigned uid, unsigned uid2, - const MachineBasicBlock *MBB) const; + MCSymbol *GetARMSetPICJumpTableLabel2(unsigned uid, unsigned uid2, + const MachineBasicBlock *MBB) const; + MCSymbol *GetARMJTIPICJumpTableLabel2(unsigned uid, unsigned uid2) const; /// EmitMachineConstantPoolValue - Print a machine constantpool value to /// the .s file. @@ -236,97 +238,26 @@ namespace { #include "ARMGenAsmWriter.inc" -/// runOnMachineFunction - This uses the printInstruction() -/// method to print assembly for each instruction. -/// -bool ARMAsmPrinter::runOnMachineFunction(MachineFunction &MF) { - this->MF = &MF; - - AFI = MF.getInfo(); - MCP = MF.getConstantPool(); - - SetupMachineFunction(MF); - O << "\n"; - - // NOTE: we don't print out constant pools here, they are handled as - // instructions. - - O << '\n'; - - // Print out labels for the function. - const Function *F = MF.getFunction(); - OutStreamer.SwitchSection(getObjFileLowering().SectionForGlobal(F, Mang, TM)); - - switch (F->getLinkage()) { - default: llvm_unreachable("Unknown linkage type!"); - case Function::PrivateLinkage: - case Function::InternalLinkage: - break; - case Function::ExternalLinkage: - O << "\t.globl\t" << *CurrentFnSym << "\n"; - break; - case Function::LinkerPrivateLinkage: - case Function::WeakAnyLinkage: - case Function::WeakODRLinkage: - case Function::LinkOnceAnyLinkage: - case Function::LinkOnceODRLinkage: - if (Subtarget->isTargetDarwin()) { - O << "\t.globl\t" << *CurrentFnSym << "\n"; - O << "\t.weak_definition\t" << *CurrentFnSym << "\n"; - } else { - O << MAI->getWeakRefDirective() << *CurrentFnSym << "\n"; - } - break; - } - - printVisibility(CurrentFnSym, F->getVisibility()); - - unsigned FnAlign = 1 << MF.getAlignment(); // MF alignment is log2. +void ARMAsmPrinter::EmitFunctionEntryLabel() { if (AFI->isThumbFunction()) { - EmitAlignment(FnAlign, F, AFI->getAlign()); O << "\t.code\t16\n"; O << "\t.thumb_func"; if (Subtarget->isTargetDarwin()) - O << "\t" << *CurrentFnSym; - O << "\n"; - } else { - EmitAlignment(FnAlign, F); - } - - O << *CurrentFnSym << ":\n"; - // Emit pre-function debug information. - DW->BeginFunction(&MF); - - if (Subtarget->isTargetDarwin()) { - // If the function is empty, then we need to emit *something*. Otherwise, - // the function's label might be associated with something that it wasn't - // meant to be associated with. We emit a noop in this situation. - MachineFunction::iterator I = MF.begin(); - - if (++I == MF.end() && MF.front().empty()) - O << "\tnop\n"; - } - - // Print out code for the function. - for (MachineFunction::const_iterator I = MF.begin(), E = MF.end(); - I != E; ++I) { - // Print a label for the basic block. - if (I != MF.begin()) - EmitBasicBlockStart(I); - - // Print the assembly for the instruction. - for (MachineBasicBlock::const_iterator II = I->begin(), E = I->end(); - II != E; ++II) - printMachineInstruction(II); + O << '\t' << *CurrentFnSym; + O << '\n'; } + + OutStreamer.EmitLabel(CurrentFnSym); +} - if (MAI->hasDotTypeDotSizeDirective()) - O << "\t.size " << *CurrentFnSym << ", .-" << *CurrentFnSym << "\n"; - - // Emit post-function debug information. - DW->EndFunction(&MF); +/// runOnMachineFunction - This uses the printInstruction() +/// method to print assembly for each instruction. +/// +bool ARMAsmPrinter::runOnMachineFunction(MachineFunction &MF) { + AFI = MF.getInfo(); + MCP = MF.getConstantPool(); - return false; + return AsmPrinter::runOnMachineFunction(MF); } void ARMAsmPrinter::printOperand(const MachineInstr *MI, int OpNum, @@ -370,7 +301,7 @@ void ARMAsmPrinter::printOperand(const MachineInstr *MI, int OpNum, break; } case MachineOperand::MO_MachineBasicBlock: - O << *GetMBBSymbol(MO.getMBB()->getNumber()); + O << *MO.getMBB()->getSymbol(OutContext); return; case MachineOperand::MO_GlobalAddress: { bool isCallOp = Modifier && !strcmp(Modifier, "call"); @@ -907,17 +838,22 @@ void ARMAsmPrinter::printCPInstOperand(const MachineInstr *MI, int OpNum, } } -void ARMAsmPrinter::printPICJumpTableSetLabel2(unsigned uid, unsigned uid2, - const MachineBasicBlock *MBB) const { - if (!MAI->getSetDirective()) - return; - - O << MAI->getSetDirective() << ' ' << MAI->getPrivateGlobalPrefix() +MCSymbol *ARMAsmPrinter:: +GetARMSetPICJumpTableLabel2(unsigned uid, unsigned uid2, + const MachineBasicBlock *MBB) const { + SmallString<60> Name; + raw_svector_ostream(Name) << MAI->getPrivateGlobalPrefix() << getFunctionNumber() << '_' << uid << '_' << uid2 - << "_set_" << MBB->getNumber() << ',' - << *GetMBBSymbol(MBB->getNumber()) - << '-' << MAI->getPrivateGlobalPrefix() << "JTI" << getFunctionNumber() - << '_' << uid << '_' << uid2 << '\n'; + << "_set_" << MBB->getNumber(); + return OutContext.GetOrCreateSymbol(Name.str()); +} + +MCSymbol *ARMAsmPrinter:: +GetARMJTIPICJumpTableLabel2(unsigned uid, unsigned uid2) const { + SmallString<60> Name; + raw_svector_ostream(Name) << MAI->getPrivateGlobalPrefix() << "JTI" + << getFunctionNumber() << '_' << uid << '_' << uid2; + return OutContext.GetOrCreateSymbol(Name.str()); } void ARMAsmPrinter::printJTBlockOperand(const MachineInstr *MI, int OpNum) { @@ -927,36 +863,34 @@ void ARMAsmPrinter::printJTBlockOperand(const MachineInstr *MI, int OpNum) { const MachineOperand &MO2 = MI->getOperand(OpNum+1); // Unique Id unsigned JTI = MO1.getIndex(); - O << MAI->getPrivateGlobalPrefix() << "JTI" << getFunctionNumber() - << '_' << JTI << '_' << MO2.getImm() << ":\n"; + MCSymbol *JTISymbol = GetARMJTIPICJumpTableLabel2(JTI, MO2.getImm()); + OutStreamer.EmitLabel(JTISymbol); const char *JTEntryDirective = MAI->getData32bitsDirective(); - const MachineFunction *MF = MI->getParent()->getParent(); const MachineJumpTableInfo *MJTI = MF->getJumpTableInfo(); const std::vector &JT = MJTI->getJumpTables(); const std::vector &JTBBs = JT[JTI].MBBs; - bool UseSet= MAI->getSetDirective() && TM.getRelocationModel() == Reloc::PIC_; + bool UseSet= MAI->hasSetDirective() && TM.getRelocationModel() == Reloc::PIC_; SmallPtrSet JTSets; for (unsigned i = 0, e = JTBBs.size(); i != e; ++i) { MachineBasicBlock *MBB = JTBBs[i]; bool isNew = JTSets.insert(MBB); - if (UseSet && isNew) - printPICJumpTableSetLabel2(JTI, MO2.getImm(), MBB); + if (UseSet && isNew) { + O << "\t.set\t" + << *GetARMSetPICJumpTableLabel2(JTI, MO2.getImm(), MBB) << ',' + << *MBB->getSymbol(OutContext) << '-' << *JTISymbol << '\n'; + } O << JTEntryDirective << ' '; if (UseSet) - O << MAI->getPrivateGlobalPrefix() << getFunctionNumber() - << '_' << JTI << '_' << MO2.getImm() - << "_set_" << MBB->getNumber(); - else if (TM.getRelocationModel() == Reloc::PIC_) { - O << *GetMBBSymbol(MBB->getNumber()) - << '-' << MAI->getPrivateGlobalPrefix() << "JTI" - << getFunctionNumber() << '_' << JTI << '_' << MO2.getImm(); - } else { - O << *GetMBBSymbol(MBB->getNumber()); - } + O << *GetARMSetPICJumpTableLabel2(JTI, MO2.getImm(), MBB); + else if (TM.getRelocationModel() == Reloc::PIC_) + O << *MBB->getSymbol(OutContext) << '-' << *JTISymbol; + else + O << *MBB->getSymbol(OutContext); + if (i != e-1) O << '\n'; } @@ -966,10 +900,10 @@ void ARMAsmPrinter::printJT2BlockOperand(const MachineInstr *MI, int OpNum) { const MachineOperand &MO1 = MI->getOperand(OpNum); const MachineOperand &MO2 = MI->getOperand(OpNum+1); // Unique Id unsigned JTI = MO1.getIndex(); - O << MAI->getPrivateGlobalPrefix() << "JTI" << getFunctionNumber() - << '_' << JTI << '_' << MO2.getImm() << ":\n"; + + MCSymbol *JTISymbol = GetARMJTIPICJumpTableLabel2(JTI, MO2.getImm()); + OutStreamer.EmitLabel(JTISymbol); - const MachineFunction *MF = MI->getParent()->getParent(); const MachineJumpTableInfo *MJTI = MF->getJumpTableInfo(); const std::vector &JT = MJTI->getJumpTables(); const std::vector &JTBBs = JT[JTI].MBBs; @@ -985,13 +919,12 @@ void ARMAsmPrinter::printJT2BlockOperand(const MachineInstr *MI, int OpNum) { O << MAI->getData8bitsDirective(); else if (HalfWordOffset) O << MAI->getData16bitsDirective(); - if (ByteOffset || HalfWordOffset) { - O << '(' << *GetMBBSymbol(MBB->getNumber()); - O << "-" << MAI->getPrivateGlobalPrefix() << "JTI" << getFunctionNumber() - << '_' << JTI << '_' << MO2.getImm() << ")/2"; - } else { - O << "\tb.w " << *GetMBBSymbol(MBB->getNumber()); - } + + if (ByteOffset || HalfWordOffset) + O << '(' << *MBB->getSymbol(OutContext) << "-" << *JTISymbol << ")/2"; + else + O << "\tb.w " << *MBB->getSymbol(OutContext); + if (i != e-1) O << '\n'; } @@ -1092,12 +1025,7 @@ bool ARMAsmPrinter::PrintAsmMemoryOperand(const MachineInstr *MI, return false; } -void ARMAsmPrinter::printMachineInstruction(const MachineInstr *MI) { - ++EmittedInsts; - - // Call the autogenerated instruction printer routines. - processDebugLoc(MI, true); - +void ARMAsmPrinter::EmitInstruction(const MachineInstr *MI) { if (EnableMCInst) { printInstructionThroughMCStreamer(MI); } else { @@ -1106,12 +1034,8 @@ void ARMAsmPrinter::printMachineInstruction(const MachineInstr *MI) { EmitAlignment(2); printInstruction(MI); + O << '\n'; } - - if (VerboseAsm) - EmitComments(*MI); - O << '\n'; - processDebugLoc(MI, false); } void ARMAsmPrinter::EmitStartOfAsmFile(Module &M) { @@ -1231,20 +1155,6 @@ void ARMAsmPrinter::printInstructionThroughMCStreamer(const MachineInstr *MI) { case ARM::t2MOVi32imm: assert(0 && "Should be lowered by thumb2it pass"); default: break; - case TargetInstrInfo::DBG_LABEL: - case TargetInstrInfo::EH_LABEL: - case TargetInstrInfo::GC_LABEL: - printLabel(MI); - return; - case TargetInstrInfo::KILL: - printKill(MI); - return; - case TargetInstrInfo::INLINEASM: - printInlineAsm(MI); - return; - case TargetInstrInfo::IMPLICIT_DEF: - printImplicitDef(MI); - return; case ARM::PICADD: { // FIXME: Remove asm string from td file. // This is a pseudo op for a label + instruction sequence, which looks like: // LPC0: