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      1 //===-- SelectionDAGDumper.cpp - Implement SelectionDAG::dump() -----------===//
      2 //
      3 //                     The LLVM Compiler Infrastructure
      4 //
      5 // This file is distributed under the University of Illinois Open Source
      6 // License. See LICENSE.TXT for details.
      7 //
      8 //===----------------------------------------------------------------------===//
      9 //
     10 // This implements the SelectionDAG::dump method and friends.
     11 //
     12 //===----------------------------------------------------------------------===//
     13 
     14 #include "ScheduleDAGSDNodes.h"
     15 #include "llvm/DebugInfo.h"
     16 #include "llvm/Function.h"
     17 #include "llvm/Intrinsics.h"
     18 #include "llvm/Assembly/Writer.h"
     19 #include "llvm/CodeGen/SelectionDAG.h"
     20 #include "llvm/CodeGen/MachineConstantPool.h"
     21 #include "llvm/CodeGen/MachineFunction.h"
     22 #include "llvm/CodeGen/MachineModuleInfo.h"
     23 #include "llvm/Target/TargetInstrInfo.h"
     24 #include "llvm/Target/TargetIntrinsicInfo.h"
     25 #include "llvm/Target/TargetMachine.h"
     26 #include "llvm/Target/TargetRegisterInfo.h"
     27 #include "llvm/Support/Debug.h"
     28 #include "llvm/Support/GraphWriter.h"
     29 #include "llvm/Support/raw_ostream.h"
     30 #include "llvm/ADT/StringExtras.h"
     31 using namespace llvm;
     32 
     33 std::string SDNode::getOperationName(const SelectionDAG *G) const {
     34   switch (getOpcode()) {
     35   default:
     36     if (getOpcode() < ISD::BUILTIN_OP_END)
     37       return "<<Unknown DAG Node>>";
     38     if (isMachineOpcode()) {
     39       if (G)
     40         if (const TargetInstrInfo *TII = G->getTarget().getInstrInfo())
     41           if (getMachineOpcode() < TII->getNumOpcodes())
     42             return TII->getName(getMachineOpcode());
     43       return "<<Unknown Machine Node #" + utostr(getOpcode()) + ">>";
     44     }
     45     if (G) {
     46       const TargetLowering &TLI = G->getTargetLoweringInfo();
     47       const char *Name = TLI.getTargetNodeName(getOpcode());
     48       if (Name) return Name;
     49       return "<<Unknown Target Node #" + utostr(getOpcode()) + ">>";
     50     }
     51     return "<<Unknown Node #" + utostr(getOpcode()) + ">>";
     52 
     53 #ifndef NDEBUG
     54   case ISD::DELETED_NODE:               return "<<Deleted Node!>>";
     55 #endif
     56   case ISD::PREFETCH:                   return "Prefetch";
     57   case ISD::MEMBARRIER:                 return "MemBarrier";
     58   case ISD::ATOMIC_FENCE:               return "AtomicFence";
     59   case ISD::ATOMIC_CMP_SWAP:            return "AtomicCmpSwap";
     60   case ISD::ATOMIC_SWAP:                return "AtomicSwap";
     61   case ISD::ATOMIC_LOAD_ADD:            return "AtomicLoadAdd";
     62   case ISD::ATOMIC_LOAD_SUB:            return "AtomicLoadSub";
     63   case ISD::ATOMIC_LOAD_AND:            return "AtomicLoadAnd";
     64   case ISD::ATOMIC_LOAD_OR:             return "AtomicLoadOr";
     65   case ISD::ATOMIC_LOAD_XOR:            return "AtomicLoadXor";
     66   case ISD::ATOMIC_LOAD_NAND:           return "AtomicLoadNand";
     67   case ISD::ATOMIC_LOAD_MIN:            return "AtomicLoadMin";
     68   case ISD::ATOMIC_LOAD_MAX:            return "AtomicLoadMax";
     69   case ISD::ATOMIC_LOAD_UMIN:           return "AtomicLoadUMin";
     70   case ISD::ATOMIC_LOAD_UMAX:           return "AtomicLoadUMax";
     71   case ISD::ATOMIC_LOAD:                return "AtomicLoad";
     72   case ISD::ATOMIC_STORE:               return "AtomicStore";
     73   case ISD::PCMARKER:                   return "PCMarker";
     74   case ISD::READCYCLECOUNTER:           return "ReadCycleCounter";
     75   case ISD::SRCVALUE:                   return "SrcValue";
     76   case ISD::MDNODE_SDNODE:              return "MDNode";
     77   case ISD::EntryToken:                 return "EntryToken";
     78   case ISD::TokenFactor:                return "TokenFactor";
     79   case ISD::AssertSext:                 return "AssertSext";
     80   case ISD::AssertZext:                 return "AssertZext";
     81 
     82   case ISD::BasicBlock:                 return "BasicBlock";
     83   case ISD::VALUETYPE:                  return "ValueType";
     84   case ISD::Register:                   return "Register";
     85   case ISD::RegisterMask:               return "RegisterMask";
     86   case ISD::Constant:                   return "Constant";
     87   case ISD::ConstantFP:                 return "ConstantFP";
     88   case ISD::GlobalAddress:              return "GlobalAddress";
     89   case ISD::GlobalTLSAddress:           return "GlobalTLSAddress";
     90   case ISD::FrameIndex:                 return "FrameIndex";
     91   case ISD::JumpTable:                  return "JumpTable";
     92   case ISD::GLOBAL_OFFSET_TABLE:        return "GLOBAL_OFFSET_TABLE";
     93   case ISD::RETURNADDR:                 return "RETURNADDR";
     94   case ISD::FRAMEADDR:                  return "FRAMEADDR";
     95   case ISD::FRAME_TO_ARGS_OFFSET:       return "FRAME_TO_ARGS_OFFSET";
     96   case ISD::EXCEPTIONADDR:              return "EXCEPTIONADDR";
     97   case ISD::LSDAADDR:                   return "LSDAADDR";
     98   case ISD::EHSELECTION:                return "EHSELECTION";
     99   case ISD::EH_RETURN:                  return "EH_RETURN";
    100   case ISD::EH_SJLJ_SETJMP:             return "EH_SJLJ_SETJMP";
    101   case ISD::EH_SJLJ_LONGJMP:            return "EH_SJLJ_LONGJMP";
    102   case ISD::ConstantPool:               return "ConstantPool";
    103   case ISD::TargetIndex:                return "TargetIndex";
    104   case ISD::ExternalSymbol:             return "ExternalSymbol";
    105   case ISD::BlockAddress:               return "BlockAddress";
    106   case ISD::INTRINSIC_WO_CHAIN:
    107   case ISD::INTRINSIC_VOID:
    108   case ISD::INTRINSIC_W_CHAIN: {
    109     unsigned OpNo = getOpcode() == ISD::INTRINSIC_WO_CHAIN ? 0 : 1;
    110     unsigned IID = cast<ConstantSDNode>(getOperand(OpNo))->getZExtValue();
    111     if (IID < Intrinsic::num_intrinsics)
    112       return Intrinsic::getName((Intrinsic::ID)IID);
    113     else if (const TargetIntrinsicInfo *TII = G->getTarget().getIntrinsicInfo())
    114       return TII->getName(IID);
    115     llvm_unreachable("Invalid intrinsic ID");
    116   }
    117 
    118   case ISD::BUILD_VECTOR:               return "BUILD_VECTOR";
    119   case ISD::TargetConstant:             return "TargetConstant";
    120   case ISD::TargetConstantFP:           return "TargetConstantFP";
    121   case ISD::TargetGlobalAddress:        return "TargetGlobalAddress";
    122   case ISD::TargetGlobalTLSAddress:     return "TargetGlobalTLSAddress";
    123   case ISD::TargetFrameIndex:           return "TargetFrameIndex";
    124   case ISD::TargetJumpTable:            return "TargetJumpTable";
    125   case ISD::TargetConstantPool:         return "TargetConstantPool";
    126   case ISD::TargetExternalSymbol:       return "TargetExternalSymbol";
    127   case ISD::TargetBlockAddress:         return "TargetBlockAddress";
    128 
    129   case ISD::CopyToReg:                  return "CopyToReg";
    130   case ISD::CopyFromReg:                return "CopyFromReg";
    131   case ISD::UNDEF:                      return "undef";
    132   case ISD::MERGE_VALUES:               return "merge_values";
    133   case ISD::INLINEASM:                  return "inlineasm";
    134   case ISD::EH_LABEL:                   return "eh_label";
    135   case ISD::HANDLENODE:                 return "handlenode";
    136 
    137   // Unary operators
    138   case ISD::FABS:                       return "fabs";
    139   case ISD::FNEG:                       return "fneg";
    140   case ISD::FSQRT:                      return "fsqrt";
    141   case ISD::FSIN:                       return "fsin";
    142   case ISD::FCOS:                       return "fcos";
    143   case ISD::FTRUNC:                     return "ftrunc";
    144   case ISD::FFLOOR:                     return "ffloor";
    145   case ISD::FCEIL:                      return "fceil";
    146   case ISD::FRINT:                      return "frint";
    147   case ISD::FNEARBYINT:                 return "fnearbyint";
    148   case ISD::FEXP:                       return "fexp";
    149   case ISD::FEXP2:                      return "fexp2";
    150   case ISD::FLOG:                       return "flog";
    151   case ISD::FLOG2:                      return "flog2";
    152   case ISD::FLOG10:                     return "flog10";
    153 
    154   // Binary operators
    155   case ISD::ADD:                        return "add";
    156   case ISD::SUB:                        return "sub";
    157   case ISD::MUL:                        return "mul";
    158   case ISD::MULHU:                      return "mulhu";
    159   case ISD::MULHS:                      return "mulhs";
    160   case ISD::SDIV:                       return "sdiv";
    161   case ISD::UDIV:                       return "udiv";
    162   case ISD::SREM:                       return "srem";
    163   case ISD::UREM:                       return "urem";
    164   case ISD::SMUL_LOHI:                  return "smul_lohi";
    165   case ISD::UMUL_LOHI:                  return "umul_lohi";
    166   case ISD::SDIVREM:                    return "sdivrem";
    167   case ISD::UDIVREM:                    return "udivrem";
    168   case ISD::AND:                        return "and";
    169   case ISD::OR:                         return "or";
    170   case ISD::XOR:                        return "xor";
    171   case ISD::SHL:                        return "shl";
    172   case ISD::SRA:                        return "sra";
    173   case ISD::SRL:                        return "srl";
    174   case ISD::ROTL:                       return "rotl";
    175   case ISD::ROTR:                       return "rotr";
    176   case ISD::FADD:                       return "fadd";
    177   case ISD::FSUB:                       return "fsub";
    178   case ISD::FMUL:                       return "fmul";
    179   case ISD::FDIV:                       return "fdiv";
    180   case ISD::FMA:                        return "fma";
    181   case ISD::FREM:                       return "frem";
    182   case ISD::FCOPYSIGN:                  return "fcopysign";
    183   case ISD::FGETSIGN:                   return "fgetsign";
    184   case ISD::FPOW:                       return "fpow";
    185 
    186   case ISD::FPOWI:                      return "fpowi";
    187   case ISD::SETCC:                      return "setcc";
    188   case ISD::SELECT:                     return "select";
    189   case ISD::VSELECT:                    return "vselect";
    190   case ISD::SELECT_CC:                  return "select_cc";
    191   case ISD::INSERT_VECTOR_ELT:          return "insert_vector_elt";
    192   case ISD::EXTRACT_VECTOR_ELT:         return "extract_vector_elt";
    193   case ISD::CONCAT_VECTORS:             return "concat_vectors";
    194   case ISD::INSERT_SUBVECTOR:           return "insert_subvector";
    195   case ISD::EXTRACT_SUBVECTOR:          return "extract_subvector";
    196   case ISD::SCALAR_TO_VECTOR:           return "scalar_to_vector";
    197   case ISD::VECTOR_SHUFFLE:             return "vector_shuffle";
    198   case ISD::CARRY_FALSE:                return "carry_false";
    199   case ISD::ADDC:                       return "addc";
    200   case ISD::ADDE:                       return "adde";
    201   case ISD::SADDO:                      return "saddo";
    202   case ISD::UADDO:                      return "uaddo";
    203   case ISD::SSUBO:                      return "ssubo";
    204   case ISD::USUBO:                      return "usubo";
    205   case ISD::SMULO:                      return "smulo";
    206   case ISD::UMULO:                      return "umulo";
    207   case ISD::SUBC:                       return "subc";
    208   case ISD::SUBE:                       return "sube";
    209   case ISD::SHL_PARTS:                  return "shl_parts";
    210   case ISD::SRA_PARTS:                  return "sra_parts";
    211   case ISD::SRL_PARTS:                  return "srl_parts";
    212 
    213   // Conversion operators.
    214   case ISD::SIGN_EXTEND:                return "sign_extend";
    215   case ISD::ZERO_EXTEND:                return "zero_extend";
    216   case ISD::ANY_EXTEND:                 return "any_extend";
    217   case ISD::SIGN_EXTEND_INREG:          return "sign_extend_inreg";
    218   case ISD::TRUNCATE:                   return "truncate";
    219   case ISD::FP_ROUND:                   return "fp_round";
    220   case ISD::FLT_ROUNDS_:                return "flt_rounds";
    221   case ISD::FP_ROUND_INREG:             return "fp_round_inreg";
    222   case ISD::FP_EXTEND:                  return "fp_extend";
    223 
    224   case ISD::SINT_TO_FP:                 return "sint_to_fp";
    225   case ISD::UINT_TO_FP:                 return "uint_to_fp";
    226   case ISD::FP_TO_SINT:                 return "fp_to_sint";
    227   case ISD::FP_TO_UINT:                 return "fp_to_uint";
    228   case ISD::BITCAST:                    return "bitcast";
    229   case ISD::FP16_TO_FP32:               return "fp16_to_fp32";
    230   case ISD::FP32_TO_FP16:               return "fp32_to_fp16";
    231 
    232   case ISD::CONVERT_RNDSAT: {
    233     switch (cast<CvtRndSatSDNode>(this)->getCvtCode()) {
    234     default: llvm_unreachable("Unknown cvt code!");
    235     case ISD::CVT_FF:                   return "cvt_ff";
    236     case ISD::CVT_FS:                   return "cvt_fs";
    237     case ISD::CVT_FU:                   return "cvt_fu";
    238     case ISD::CVT_SF:                   return "cvt_sf";
    239     case ISD::CVT_UF:                   return "cvt_uf";
    240     case ISD::CVT_SS:                   return "cvt_ss";
    241     case ISD::CVT_SU:                   return "cvt_su";
    242     case ISD::CVT_US:                   return "cvt_us";
    243     case ISD::CVT_UU:                   return "cvt_uu";
    244     }
    245   }
    246 
    247     // Control flow instructions
    248   case ISD::BR:                         return "br";
    249   case ISD::BRIND:                      return "brind";
    250   case ISD::BR_JT:                      return "br_jt";
    251   case ISD::BRCOND:                     return "brcond";
    252   case ISD::BR_CC:                      return "br_cc";
    253   case ISD::CALLSEQ_START:              return "callseq_start";
    254   case ISD::CALLSEQ_END:                return "callseq_end";
    255 
    256     // Other operators
    257   case ISD::LOAD:                       return "load";
    258   case ISD::STORE:                      return "store";
    259   case ISD::VAARG:                      return "vaarg";
    260   case ISD::VACOPY:                     return "vacopy";
    261   case ISD::VAEND:                      return "vaend";
    262   case ISD::VASTART:                    return "vastart";
    263   case ISD::DYNAMIC_STACKALLOC:         return "dynamic_stackalloc";
    264   case ISD::EXTRACT_ELEMENT:            return "extract_element";
    265   case ISD::BUILD_PAIR:                 return "build_pair";
    266   case ISD::STACKSAVE:                  return "stacksave";
    267   case ISD::STACKRESTORE:               return "stackrestore";
    268   case ISD::TRAP:                       return "trap";
    269   case ISD::DEBUGTRAP:                  return "debugtrap";
    270   case ISD::LIFETIME_START:             return "lifetime.start";
    271   case ISD::LIFETIME_END:               return "lifetime.end";
    272 
    273   // Bit manipulation
    274   case ISD::BSWAP:                      return "bswap";
    275   case ISD::CTPOP:                      return "ctpop";
    276   case ISD::CTTZ:                       return "cttz";
    277   case ISD::CTTZ_ZERO_UNDEF:            return "cttz_zero_undef";
    278   case ISD::CTLZ:                       return "ctlz";
    279   case ISD::CTLZ_ZERO_UNDEF:            return "ctlz_zero_undef";
    280 
    281   // Trampolines
    282   case ISD::INIT_TRAMPOLINE:            return "init_trampoline";
    283   case ISD::ADJUST_TRAMPOLINE:          return "adjust_trampoline";
    284 
    285   case ISD::CONDCODE:
    286     switch (cast<CondCodeSDNode>(this)->get()) {
    287     default: llvm_unreachable("Unknown setcc condition!");
    288     case ISD::SETOEQ:                   return "setoeq";
    289     case ISD::SETOGT:                   return "setogt";
    290     case ISD::SETOGE:                   return "setoge";
    291     case ISD::SETOLT:                   return "setolt";
    292     case ISD::SETOLE:                   return "setole";
    293     case ISD::SETONE:                   return "setone";
    294 
    295     case ISD::SETO:                     return "seto";
    296     case ISD::SETUO:                    return "setuo";
    297     case ISD::SETUEQ:                   return "setue";
    298     case ISD::SETUGT:                   return "setugt";
    299     case ISD::SETUGE:                   return "setuge";
    300     case ISD::SETULT:                   return "setult";
    301     case ISD::SETULE:                   return "setule";
    302     case ISD::SETUNE:                   return "setune";
    303 
    304     case ISD::SETEQ:                    return "seteq";
    305     case ISD::SETGT:                    return "setgt";
    306     case ISD::SETGE:                    return "setge";
    307     case ISD::SETLT:                    return "setlt";
    308     case ISD::SETLE:                    return "setle";
    309     case ISD::SETNE:                    return "setne";
    310 
    311     case ISD::SETTRUE:                  return "settrue";
    312     case ISD::SETTRUE2:                 return "settrue2";
    313     case ISD::SETFALSE:                 return "setfalse";
    314     case ISD::SETFALSE2:                return "setfalse2";
    315     }
    316   }
    317 }
    318 
    319 const char *SDNode::getIndexedModeName(ISD::MemIndexedMode AM) {
    320   switch (AM) {
    321   default:              return "";
    322   case ISD::PRE_INC:    return "<pre-inc>";
    323   case ISD::PRE_DEC:    return "<pre-dec>";
    324   case ISD::POST_INC:   return "<post-inc>";
    325   case ISD::POST_DEC:   return "<post-dec>";
    326   }
    327 }
    328 
    329 void SDNode::dump() const { dump(0); }
    330 void SDNode::dump(const SelectionDAG *G) const {
    331   print(dbgs(), G);
    332   dbgs() << '\n';
    333 }
    334 
    335 void SDNode::print_types(raw_ostream &OS, const SelectionDAG *G) const {
    336   OS << (const void*)this << ": ";
    337 
    338   for (unsigned i = 0, e = getNumValues(); i != e; ++i) {
    339     if (i) OS << ",";
    340     if (getValueType(i) == MVT::Other)
    341       OS << "ch";
    342     else
    343       OS << getValueType(i).getEVTString();
    344   }
    345   OS << " = " << getOperationName(G);
    346 }
    347 
    348 void SDNode::print_details(raw_ostream &OS, const SelectionDAG *G) const {
    349   if (const MachineSDNode *MN = dyn_cast<MachineSDNode>(this)) {
    350     if (!MN->memoperands_empty()) {
    351       OS << "<";
    352       OS << "Mem:";
    353       for (MachineSDNode::mmo_iterator i = MN->memoperands_begin(),
    354            e = MN->memoperands_end(); i != e; ++i) {
    355         OS << **i;
    356         if (llvm::next(i) != e)
    357           OS << " ";
    358       }
    359       OS << ">";
    360     }
    361   } else if (const ShuffleVectorSDNode *SVN =
    362                dyn_cast<ShuffleVectorSDNode>(this)) {
    363     OS << "<";
    364     for (unsigned i = 0, e = ValueList[0].getVectorNumElements(); i != e; ++i) {
    365       int Idx = SVN->getMaskElt(i);
    366       if (i) OS << ",";
    367       if (Idx < 0)
    368         OS << "u";
    369       else
    370         OS << Idx;
    371     }
    372     OS << ">";
    373   } else if (const ConstantSDNode *CSDN = dyn_cast<ConstantSDNode>(this)) {
    374     OS << '<' << CSDN->getAPIntValue() << '>';
    375   } else if (const ConstantFPSDNode *CSDN = dyn_cast<ConstantFPSDNode>(this)) {
    376     if (&CSDN->getValueAPF().getSemantics()==&APFloat::IEEEsingle)
    377       OS << '<' << CSDN->getValueAPF().convertToFloat() << '>';
    378     else if (&CSDN->getValueAPF().getSemantics()==&APFloat::IEEEdouble)
    379       OS << '<' << CSDN->getValueAPF().convertToDouble() << '>';
    380     else {
    381       OS << "<APFloat(";
    382       CSDN->getValueAPF().bitcastToAPInt().dump();
    383       OS << ")>";
    384     }
    385   } else if (const GlobalAddressSDNode *GADN =
    386              dyn_cast<GlobalAddressSDNode>(this)) {
    387     int64_t offset = GADN->getOffset();
    388     OS << '<';
    389     WriteAsOperand(OS, GADN->getGlobal());
    390     OS << '>';
    391     if (offset > 0)
    392       OS << " + " << offset;
    393     else
    394       OS << " " << offset;
    395     if (unsigned int TF = GADN->getTargetFlags())
    396       OS << " [TF=" << TF << ']';
    397   } else if (const FrameIndexSDNode *FIDN = dyn_cast<FrameIndexSDNode>(this)) {
    398     OS << "<" << FIDN->getIndex() << ">";
    399   } else if (const JumpTableSDNode *JTDN = dyn_cast<JumpTableSDNode>(this)) {
    400     OS << "<" << JTDN->getIndex() << ">";
    401     if (unsigned int TF = JTDN->getTargetFlags())
    402       OS << " [TF=" << TF << ']';
    403   } else if (const ConstantPoolSDNode *CP = dyn_cast<ConstantPoolSDNode>(this)){
    404     int offset = CP->getOffset();
    405     if (CP->isMachineConstantPoolEntry())
    406       OS << "<" << *CP->getMachineCPVal() << ">";
    407     else
    408       OS << "<" << *CP->getConstVal() << ">";
    409     if (offset > 0)
    410       OS << " + " << offset;
    411     else
    412       OS << " " << offset;
    413     if (unsigned int TF = CP->getTargetFlags())
    414       OS << " [TF=" << TF << ']';
    415   } else if (const TargetIndexSDNode *TI = dyn_cast<TargetIndexSDNode>(this)) {
    416     OS << "<" << TI->getIndex() << '+' << TI->getOffset() << ">";
    417     if (unsigned TF = TI->getTargetFlags())
    418       OS << " [TF=" << TF << ']';
    419   } else if (const BasicBlockSDNode *BBDN = dyn_cast<BasicBlockSDNode>(this)) {
    420     OS << "<";
    421     const Value *LBB = (const Value*)BBDN->getBasicBlock()->getBasicBlock();
    422     if (LBB)
    423       OS << LBB->getName() << " ";
    424     OS << (const void*)BBDN->getBasicBlock() << ">";
    425   } else if (const RegisterSDNode *R = dyn_cast<RegisterSDNode>(this)) {
    426     OS << ' ' << PrintReg(R->getReg(), G ? G->getTarget().getRegisterInfo() :0);
    427   } else if (const ExternalSymbolSDNode *ES =
    428              dyn_cast<ExternalSymbolSDNode>(this)) {
    429     OS << "'" << ES->getSymbol() << "'";
    430     if (unsigned int TF = ES->getTargetFlags())
    431       OS << " [TF=" << TF << ']';
    432   } else if (const SrcValueSDNode *M = dyn_cast<SrcValueSDNode>(this)) {
    433     if (M->getValue())
    434       OS << "<" << M->getValue() << ">";
    435     else
    436       OS << "<null>";
    437   } else if (const MDNodeSDNode *MD = dyn_cast<MDNodeSDNode>(this)) {
    438     if (MD->getMD())
    439       OS << "<" << MD->getMD() << ">";
    440     else
    441       OS << "<null>";
    442   } else if (const VTSDNode *N = dyn_cast<VTSDNode>(this)) {
    443     OS << ":" << N->getVT().getEVTString();
    444   }
    445   else if (const LoadSDNode *LD = dyn_cast<LoadSDNode>(this)) {
    446     OS << "<" << *LD->getMemOperand();
    447 
    448     bool doExt = true;
    449     switch (LD->getExtensionType()) {
    450     default: doExt = false; break;
    451     case ISD::EXTLOAD:  OS << ", anyext"; break;
    452     case ISD::SEXTLOAD: OS << ", sext"; break;
    453     case ISD::ZEXTLOAD: OS << ", zext"; break;
    454     }
    455     if (doExt)
    456       OS << " from " << LD->getMemoryVT().getEVTString();
    457 
    458     const char *AM = getIndexedModeName(LD->getAddressingMode());
    459     if (*AM)
    460       OS << ", " << AM;
    461 
    462     OS << ">";
    463   } else if (const StoreSDNode *ST = dyn_cast<StoreSDNode>(this)) {
    464     OS << "<" << *ST->getMemOperand();
    465 
    466     if (ST->isTruncatingStore())
    467       OS << ", trunc to " << ST->getMemoryVT().getEVTString();
    468 
    469     const char *AM = getIndexedModeName(ST->getAddressingMode());
    470     if (*AM)
    471       OS << ", " << AM;
    472 
    473     OS << ">";
    474   } else if (const MemSDNode* M = dyn_cast<MemSDNode>(this)) {
    475     OS << "<" << *M->getMemOperand() << ">";
    476   } else if (const BlockAddressSDNode *BA =
    477                dyn_cast<BlockAddressSDNode>(this)) {
    478     OS << "<";
    479     WriteAsOperand(OS, BA->getBlockAddress()->getFunction(), false);
    480     OS << ", ";
    481     WriteAsOperand(OS, BA->getBlockAddress()->getBasicBlock(), false);
    482     OS << ">";
    483     if (unsigned int TF = BA->getTargetFlags())
    484       OS << " [TF=" << TF << ']';
    485   }
    486 
    487   if (G)
    488     if (unsigned Order = G->GetOrdering(this))
    489       OS << " [ORD=" << Order << ']';
    490 
    491   if (getNodeId() != -1)
    492     OS << " [ID=" << getNodeId() << ']';
    493 
    494   DebugLoc dl = getDebugLoc();
    495   if (G && !dl.isUnknown()) {
    496     DIScope
    497       Scope(dl.getScope(G->getMachineFunction().getFunction()->getContext()));
    498     OS << " dbg:";
    499     // Omit the directory, since it's usually long and uninteresting.
    500     if (Scope.Verify())
    501       OS << Scope.getFilename();
    502     else
    503       OS << "<unknown>";
    504     OS << ':' << dl.getLine();
    505     if (dl.getCol() != 0)
    506       OS << ':' << dl.getCol();
    507   }
    508 }
    509 
    510 static void DumpNodes(const SDNode *N, unsigned indent, const SelectionDAG *G) {
    511   for (unsigned i = 0, e = N->getNumOperands(); i != e; ++i)
    512     if (N->getOperand(i).getNode()->hasOneUse())
    513       DumpNodes(N->getOperand(i).getNode(), indent+2, G);
    514     else
    515       dbgs() << "\n" << std::string(indent+2, ' ')
    516              << (void*)N->getOperand(i).getNode() << ": <multiple use>";
    517 
    518   dbgs() << '\n';
    519   dbgs().indent(indent);
    520   N->dump(G);
    521 }
    522 
    523 void SelectionDAG::dump() const {
    524   dbgs() << "SelectionDAG has " << AllNodes.size() << " nodes:";
    525 
    526   for (allnodes_const_iterator I = allnodes_begin(), E = allnodes_end();
    527        I != E; ++I) {
    528     const SDNode *N = I;
    529     if (!N->hasOneUse() && N != getRoot().getNode())
    530       DumpNodes(N, 2, this);
    531   }
    532 
    533   if (getRoot().getNode()) DumpNodes(getRoot().getNode(), 2, this);
    534   dbgs() << "\n\n";
    535 }
    536 
    537 void SDNode::printr(raw_ostream &OS, const SelectionDAG *G) const {
    538   print_types(OS, G);
    539   print_details(OS, G);
    540 }
    541 
    542 typedef SmallPtrSet<const SDNode *, 128> VisitedSDNodeSet;
    543 static void DumpNodesr(raw_ostream &OS, const SDNode *N, unsigned indent,
    544                        const SelectionDAG *G, VisitedSDNodeSet &once) {
    545   if (!once.insert(N))          // If we've been here before, return now.
    546     return;
    547 
    548   // Dump the current SDNode, but don't end the line yet.
    549   OS.indent(indent);
    550   N->printr(OS, G);
    551 
    552   // Having printed this SDNode, walk the children:
    553   for (unsigned i = 0, e = N->getNumOperands(); i != e; ++i) {
    554     const SDNode *child = N->getOperand(i).getNode();
    555 
    556     if (i) OS << ",";
    557     OS << " ";
    558 
    559     if (child->getNumOperands() == 0) {
    560       // This child has no grandchildren; print it inline right here.
    561       child->printr(OS, G);
    562       once.insert(child);
    563     } else {         // Just the address. FIXME: also print the child's opcode.
    564       OS << (const void*)child;
    565       if (unsigned RN = N->getOperand(i).getResNo())
    566         OS << ":" << RN;
    567     }
    568   }
    569 
    570   OS << "\n";
    571 
    572   // Dump children that have grandchildren on their own line(s).
    573   for (unsigned i = 0, e = N->getNumOperands(); i != e; ++i) {
    574     const SDNode *child = N->getOperand(i).getNode();
    575     DumpNodesr(OS, child, indent+2, G, once);
    576   }
    577 }
    578 
    579 void SDNode::dumpr() const {
    580   VisitedSDNodeSet once;
    581   DumpNodesr(dbgs(), this, 0, 0, once);
    582 }
    583 
    584 void SDNode::dumpr(const SelectionDAG *G) const {
    585   VisitedSDNodeSet once;
    586   DumpNodesr(dbgs(), this, 0, G, once);
    587 }
    588 
    589 static void printrWithDepthHelper(raw_ostream &OS, const SDNode *N,
    590                                   const SelectionDAG *G, unsigned depth,
    591                                   unsigned indent) {
    592   if (depth == 0)
    593     return;
    594 
    595   OS.indent(indent);
    596 
    597   N->print(OS, G);
    598 
    599   if (depth < 1)
    600     return;
    601 
    602   for (unsigned i = 0, e = N->getNumOperands(); i != e; ++i) {
    603     // Don't follow chain operands.
    604     if (N->getOperand(i).getValueType() == MVT::Other)
    605       continue;
    606     OS << '\n';
    607     printrWithDepthHelper(OS, N->getOperand(i).getNode(), G, depth-1, indent+2);
    608   }
    609 }
    610 
    611 void SDNode::printrWithDepth(raw_ostream &OS, const SelectionDAG *G,
    612                             unsigned depth) const {
    613   printrWithDepthHelper(OS, this, G, depth, 0);
    614 }
    615 
    616 void SDNode::printrFull(raw_ostream &OS, const SelectionDAG *G) const {
    617   // Don't print impossibly deep things.
    618   printrWithDepth(OS, G, 10);
    619 }
    620 
    621 void SDNode::dumprWithDepth(const SelectionDAG *G, unsigned depth) const {
    622   printrWithDepth(dbgs(), G, depth);
    623 }
    624 
    625 void SDNode::dumprFull(const SelectionDAG *G) const {
    626   // Don't print impossibly deep things.
    627   dumprWithDepth(G, 10);
    628 }
    629 
    630 void SDNode::print(raw_ostream &OS, const SelectionDAG *G) const {
    631   print_types(OS, G);
    632   for (unsigned i = 0, e = getNumOperands(); i != e; ++i) {
    633     if (i) OS << ", "; else OS << " ";
    634     OS << (void*)getOperand(i).getNode();
    635     if (unsigned RN = getOperand(i).getResNo())
    636       OS << ":" << RN;
    637   }
    638   print_details(OS, G);
    639 }
    640