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      1 //===- SelectionDAGDumper.cpp - Implement SelectionDAG::dump() ------------===//
      2 //
      3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
      4 // See https://llvm.org/LICENSE.txt for license information.
      5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
      6 //
      7 //===----------------------------------------------------------------------===//
      8 //
      9 // This implements the SelectionDAG::dump method and friends.
     10 //
     11 //===----------------------------------------------------------------------===//
     12 
     13 #include "llvm/ADT/APFloat.h"
     14 #include "llvm/ADT/APInt.h"
     15 #include "llvm/ADT/None.h"
     16 #include "llvm/ADT/SmallPtrSet.h"
     17 #include "llvm/ADT/StringExtras.h"
     18 #include "llvm/CodeGen/ISDOpcodes.h"
     19 #include "llvm/CodeGen/MachineBasicBlock.h"
     20 #include "llvm/CodeGen/MachineConstantPool.h"
     21 #include "llvm/CodeGen/MachineMemOperand.h"
     22 #include "llvm/CodeGen/SelectionDAG.h"
     23 #include "llvm/CodeGen/SelectionDAGNodes.h"
     24 #include "llvm/CodeGen/TargetInstrInfo.h"
     25 #include "llvm/CodeGen/TargetLowering.h"
     26 #include "llvm/CodeGen/TargetRegisterInfo.h"
     27 #include "llvm/CodeGen/TargetSubtargetInfo.h"
     28 #include "llvm/CodeGen/ValueTypes.h"
     29 #include "llvm/Config/llvm-config.h"
     30 #include "llvm/IR/BasicBlock.h"
     31 #include "llvm/IR/Constants.h"
     32 #include "llvm/IR/DebugInfoMetadata.h"
     33 #include "llvm/IR/DebugLoc.h"
     34 #include "llvm/IR/Function.h"
     35 #include "llvm/IR/Intrinsics.h"
     36 #include "llvm/IR/ModuleSlotTracker.h"
     37 #include "llvm/IR/Value.h"
     38 #include "llvm/Support/Casting.h"
     39 #include "llvm/Support/CommandLine.h"
     40 #include "llvm/Support/Compiler.h"
     41 #include "llvm/Support/Debug.h"
     42 #include "llvm/Support/ErrorHandling.h"
     43 #include "llvm/Support/MachineValueType.h"
     44 #include "llvm/Support/Printable.h"
     45 #include "llvm/Support/raw_ostream.h"
     46 #include "llvm/Target/TargetIntrinsicInfo.h"
     47 #include "llvm/Target/TargetMachine.h"
     48 #include "SDNodeDbgValue.h"
     49 #include <cstdint>
     50 #include <iterator>
     51 
     52 using namespace llvm;
     53 
     54 static cl::opt<bool>
     55 VerboseDAGDumping("dag-dump-verbose", cl::Hidden,
     56                   cl::desc("Display more information when dumping selection "
     57                            "DAG nodes."));
     58 
     59 std::string SDNode::getOperationName(const SelectionDAG *G) const {
     60   switch (getOpcode()) {
     61   default:
     62     if (getOpcode() < ISD::BUILTIN_OP_END)
     63       return "<<Unknown DAG Node>>";
     64     if (isMachineOpcode()) {
     65       if (G)
     66         if (const TargetInstrInfo *TII = G->getSubtarget().getInstrInfo())
     67           if (getMachineOpcode() < TII->getNumOpcodes())
     68             return std::string(TII->getName(getMachineOpcode()));
     69       return "<<Unknown Machine Node #" + utostr(getOpcode()) + ">>";
     70     }
     71     if (G) {
     72       const TargetLowering &TLI = G->getTargetLoweringInfo();
     73       const char *Name = TLI.getTargetNodeName(getOpcode());
     74       if (Name) return Name;
     75       return "<<Unknown Target Node #" + utostr(getOpcode()) + ">>";
     76     }
     77     return "<<Unknown Node #" + utostr(getOpcode()) + ">>";
     78 
     79 #ifndef NDEBUG
     80   case ISD::DELETED_NODE:               return "<<Deleted Node!>>";
     81 #endif
     82   case ISD::PREFETCH:                   return "Prefetch";
     83   case ISD::ATOMIC_FENCE:               return "AtomicFence";
     84   case ISD::ATOMIC_CMP_SWAP:            return "AtomicCmpSwap";
     85   case ISD::ATOMIC_CMP_SWAP_WITH_SUCCESS: return "AtomicCmpSwapWithSuccess";
     86   case ISD::ATOMIC_SWAP:                return "AtomicSwap";
     87   case ISD::ATOMIC_LOAD_ADD:            return "AtomicLoadAdd";
     88   case ISD::ATOMIC_LOAD_SUB:            return "AtomicLoadSub";
     89   case ISD::ATOMIC_LOAD_AND:            return "AtomicLoadAnd";
     90   case ISD::ATOMIC_LOAD_CLR:            return "AtomicLoadClr";
     91   case ISD::ATOMIC_LOAD_OR:             return "AtomicLoadOr";
     92   case ISD::ATOMIC_LOAD_XOR:            return "AtomicLoadXor";
     93   case ISD::ATOMIC_LOAD_NAND:           return "AtomicLoadNand";
     94   case ISD::ATOMIC_LOAD_MIN:            return "AtomicLoadMin";
     95   case ISD::ATOMIC_LOAD_MAX:            return "AtomicLoadMax";
     96   case ISD::ATOMIC_LOAD_UMIN:           return "AtomicLoadUMin";
     97   case ISD::ATOMIC_LOAD_UMAX:           return "AtomicLoadUMax";
     98   case ISD::ATOMIC_LOAD_FADD:           return "AtomicLoadFAdd";
     99   case ISD::ATOMIC_LOAD:                return "AtomicLoad";
    100   case ISD::ATOMIC_STORE:               return "AtomicStore";
    101   case ISD::PCMARKER:                   return "PCMarker";
    102   case ISD::READCYCLECOUNTER:           return "ReadCycleCounter";
    103   case ISD::SRCVALUE:                   return "SrcValue";
    104   case ISD::MDNODE_SDNODE:              return "MDNode";
    105   case ISD::EntryToken:                 return "EntryToken";
    106   case ISD::TokenFactor:                return "TokenFactor";
    107   case ISD::AssertSext:                 return "AssertSext";
    108   case ISD::AssertZext:                 return "AssertZext";
    109   case ISD::AssertAlign:                return "AssertAlign";
    110 
    111   case ISD::BasicBlock:                 return "BasicBlock";
    112   case ISD::VALUETYPE:                  return "ValueType";
    113   case ISD::Register:                   return "Register";
    114   case ISD::RegisterMask:               return "RegisterMask";
    115   case ISD::Constant:
    116     if (cast<ConstantSDNode>(this)->isOpaque())
    117       return "OpaqueConstant";
    118     return "Constant";
    119   case ISD::ConstantFP:                 return "ConstantFP";
    120   case ISD::GlobalAddress:              return "GlobalAddress";
    121   case ISD::GlobalTLSAddress:           return "GlobalTLSAddress";
    122   case ISD::FrameIndex:                 return "FrameIndex";
    123   case ISD::JumpTable:                  return "JumpTable";
    124   case ISD::GLOBAL_OFFSET_TABLE:        return "GLOBAL_OFFSET_TABLE";
    125   case ISD::RETURNADDR:                 return "RETURNADDR";
    126   case ISD::ADDROFRETURNADDR:           return "ADDROFRETURNADDR";
    127   case ISD::FRAMEADDR:                  return "FRAMEADDR";
    128   case ISD::SPONENTRY:                  return "SPONENTRY";
    129   case ISD::LOCAL_RECOVER:              return "LOCAL_RECOVER";
    130   case ISD::READ_REGISTER:              return "READ_REGISTER";
    131   case ISD::WRITE_REGISTER:             return "WRITE_REGISTER";
    132   case ISD::FRAME_TO_ARGS_OFFSET:       return "FRAME_TO_ARGS_OFFSET";
    133   case ISD::EH_DWARF_CFA:               return "EH_DWARF_CFA";
    134   case ISD::EH_RETURN:                  return "EH_RETURN";
    135   case ISD::EH_SJLJ_SETJMP:             return "EH_SJLJ_SETJMP";
    136   case ISD::EH_SJLJ_LONGJMP:            return "EH_SJLJ_LONGJMP";
    137   case ISD::EH_SJLJ_SETUP_DISPATCH:     return "EH_SJLJ_SETUP_DISPATCH";
    138   case ISD::ConstantPool:               return "ConstantPool";
    139   case ISD::TargetIndex:                return "TargetIndex";
    140   case ISD::ExternalSymbol:             return "ExternalSymbol";
    141   case ISD::BlockAddress:               return "BlockAddress";
    142   case ISD::INTRINSIC_WO_CHAIN:
    143   case ISD::INTRINSIC_VOID:
    144   case ISD::INTRINSIC_W_CHAIN: {
    145     unsigned OpNo = getOpcode() == ISD::INTRINSIC_WO_CHAIN ? 0 : 1;
    146     unsigned IID = cast<ConstantSDNode>(getOperand(OpNo))->getZExtValue();
    147     if (IID < Intrinsic::num_intrinsics)
    148       return Intrinsic::getName((Intrinsic::ID)IID, None);
    149     else if (!G)
    150       return "Unknown intrinsic";
    151     else if (const TargetIntrinsicInfo *TII = G->getTarget().getIntrinsicInfo())
    152       return TII->getName(IID);
    153     llvm_unreachable("Invalid intrinsic ID");
    154   }
    155 
    156   case ISD::BUILD_VECTOR:               return "BUILD_VECTOR";
    157   case ISD::TargetConstant:
    158     if (cast<ConstantSDNode>(this)->isOpaque())
    159       return "OpaqueTargetConstant";
    160     return "TargetConstant";
    161   case ISD::TargetConstantFP:           return "TargetConstantFP";
    162   case ISD::TargetGlobalAddress:        return "TargetGlobalAddress";
    163   case ISD::TargetGlobalTLSAddress:     return "TargetGlobalTLSAddress";
    164   case ISD::TargetFrameIndex:           return "TargetFrameIndex";
    165   case ISD::TargetJumpTable:            return "TargetJumpTable";
    166   case ISD::TargetConstantPool:         return "TargetConstantPool";
    167   case ISD::TargetExternalSymbol:       return "TargetExternalSymbol";
    168   case ISD::MCSymbol:                   return "MCSymbol";
    169   case ISD::TargetBlockAddress:         return "TargetBlockAddress";
    170 
    171   case ISD::CopyToReg:                  return "CopyToReg";
    172   case ISD::CopyFromReg:                return "CopyFromReg";
    173   case ISD::UNDEF:                      return "undef";
    174   case ISD::VSCALE:                     return "vscale";
    175   case ISD::MERGE_VALUES:               return "merge_values";
    176   case ISD::INLINEASM:                  return "inlineasm";
    177   case ISD::INLINEASM_BR:               return "inlineasm_br";
    178   case ISD::EH_LABEL:                   return "eh_label";
    179   case ISD::ANNOTATION_LABEL:           return "annotation_label";
    180   case ISD::HANDLENODE:                 return "handlenode";
    181 
    182   // Unary operators
    183   case ISD::FABS:                       return "fabs";
    184   case ISD::FMINNUM:                    return "fminnum";
    185   case ISD::STRICT_FMINNUM:             return "strict_fminnum";
    186   case ISD::FMAXNUM:                    return "fmaxnum";
    187   case ISD::STRICT_FMAXNUM:             return "strict_fmaxnum";
    188   case ISD::FMINNUM_IEEE:               return "fminnum_ieee";
    189   case ISD::FMAXNUM_IEEE:               return "fmaxnum_ieee";
    190   case ISD::FMINIMUM:                   return "fminimum";
    191   case ISD::STRICT_FMINIMUM:            return "strict_fminimum";
    192   case ISD::FMAXIMUM:                   return "fmaximum";
    193   case ISD::STRICT_FMAXIMUM:            return "strict_fmaximum";
    194   case ISD::FNEG:                       return "fneg";
    195   case ISD::FSQRT:                      return "fsqrt";
    196   case ISD::STRICT_FSQRT:               return "strict_fsqrt";
    197   case ISD::FCBRT:                      return "fcbrt";
    198   case ISD::FSIN:                       return "fsin";
    199   case ISD::STRICT_FSIN:                return "strict_fsin";
    200   case ISD::FCOS:                       return "fcos";
    201   case ISD::STRICT_FCOS:                return "strict_fcos";
    202   case ISD::FSINCOS:                    return "fsincos";
    203   case ISD::FTRUNC:                     return "ftrunc";
    204   case ISD::STRICT_FTRUNC:              return "strict_ftrunc";
    205   case ISD::FFLOOR:                     return "ffloor";
    206   case ISD::STRICT_FFLOOR:              return "strict_ffloor";
    207   case ISD::FCEIL:                      return "fceil";
    208   case ISD::STRICT_FCEIL:               return "strict_fceil";
    209   case ISD::FRINT:                      return "frint";
    210   case ISD::STRICT_FRINT:               return "strict_frint";
    211   case ISD::FNEARBYINT:                 return "fnearbyint";
    212   case ISD::STRICT_FNEARBYINT:          return "strict_fnearbyint";
    213   case ISD::FROUND:                     return "fround";
    214   case ISD::STRICT_FROUND:              return "strict_fround";
    215   case ISD::FROUNDEVEN:                 return "froundeven";
    216   case ISD::STRICT_FROUNDEVEN:          return "strict_froundeven";
    217   case ISD::FEXP:                       return "fexp";
    218   case ISD::STRICT_FEXP:                return "strict_fexp";
    219   case ISD::FEXP2:                      return "fexp2";
    220   case ISD::STRICT_FEXP2:               return "strict_fexp2";
    221   case ISD::FLOG:                       return "flog";
    222   case ISD::STRICT_FLOG:                return "strict_flog";
    223   case ISD::FLOG2:                      return "flog2";
    224   case ISD::STRICT_FLOG2:               return "strict_flog2";
    225   case ISD::FLOG10:                     return "flog10";
    226   case ISD::STRICT_FLOG10:              return "strict_flog10";
    227 
    228   // Binary operators
    229   case ISD::ADD:                        return "add";
    230   case ISD::SUB:                        return "sub";
    231   case ISD::MUL:                        return "mul";
    232   case ISD::MULHU:                      return "mulhu";
    233   case ISD::MULHS:                      return "mulhs";
    234   case ISD::SDIV:                       return "sdiv";
    235   case ISD::UDIV:                       return "udiv";
    236   case ISD::SREM:                       return "srem";
    237   case ISD::UREM:                       return "urem";
    238   case ISD::SMUL_LOHI:                  return "smul_lohi";
    239   case ISD::UMUL_LOHI:                  return "umul_lohi";
    240   case ISD::SDIVREM:                    return "sdivrem";
    241   case ISD::UDIVREM:                    return "udivrem";
    242   case ISD::AND:                        return "and";
    243   case ISD::OR:                         return "or";
    244   case ISD::XOR:                        return "xor";
    245   case ISD::SHL:                        return "shl";
    246   case ISD::SRA:                        return "sra";
    247   case ISD::SRL:                        return "srl";
    248   case ISD::ROTL:                       return "rotl";
    249   case ISD::ROTR:                       return "rotr";
    250   case ISD::FSHL:                       return "fshl";
    251   case ISD::FSHR:                       return "fshr";
    252   case ISD::FADD:                       return "fadd";
    253   case ISD::STRICT_FADD:                return "strict_fadd";
    254   case ISD::FSUB:                       return "fsub";
    255   case ISD::STRICT_FSUB:                return "strict_fsub";
    256   case ISD::FMUL:                       return "fmul";
    257   case ISD::STRICT_FMUL:                return "strict_fmul";
    258   case ISD::FDIV:                       return "fdiv";
    259   case ISD::STRICT_FDIV:                return "strict_fdiv";
    260   case ISD::FMA:                        return "fma";
    261   case ISD::STRICT_FMA:                 return "strict_fma";
    262   case ISD::FMAD:                       return "fmad";
    263   case ISD::FREM:                       return "frem";
    264   case ISD::STRICT_FREM:                return "strict_frem";
    265   case ISD::FCOPYSIGN:                  return "fcopysign";
    266   case ISD::FGETSIGN:                   return "fgetsign";
    267   case ISD::FCANONICALIZE:              return "fcanonicalize";
    268   case ISD::FPOW:                       return "fpow";
    269   case ISD::STRICT_FPOW:                return "strict_fpow";
    270   case ISD::SMIN:                       return "smin";
    271   case ISD::SMAX:                       return "smax";
    272   case ISD::UMIN:                       return "umin";
    273   case ISD::UMAX:                       return "umax";
    274 
    275   case ISD::FPOWI:                      return "fpowi";
    276   case ISD::STRICT_FPOWI:               return "strict_fpowi";
    277   case ISD::SETCC:                      return "setcc";
    278   case ISD::SETCCCARRY:                 return "setcccarry";
    279   case ISD::STRICT_FSETCC:              return "strict_fsetcc";
    280   case ISD::STRICT_FSETCCS:             return "strict_fsetccs";
    281   case ISD::SELECT:                     return "select";
    282   case ISD::VSELECT:                    return "vselect";
    283   case ISD::SELECT_CC:                  return "select_cc";
    284   case ISD::INSERT_VECTOR_ELT:          return "insert_vector_elt";
    285   case ISD::EXTRACT_VECTOR_ELT:         return "extract_vector_elt";
    286   case ISD::CONCAT_VECTORS:             return "concat_vectors";
    287   case ISD::INSERT_SUBVECTOR:           return "insert_subvector";
    288   case ISD::EXTRACT_SUBVECTOR:          return "extract_subvector";
    289   case ISD::SCALAR_TO_VECTOR:           return "scalar_to_vector";
    290   case ISD::VECTOR_SHUFFLE:             return "vector_shuffle";
    291   case ISD::VECTOR_SPLICE:              return "vector_splice";
    292   case ISD::SPLAT_VECTOR:               return "splat_vector";
    293   case ISD::SPLAT_VECTOR_PARTS:         return "splat_vector_parts";
    294   case ISD::VECTOR_REVERSE:             return "vector_reverse";
    295   case ISD::STEP_VECTOR:                return "step_vector";
    296   case ISD::CARRY_FALSE:                return "carry_false";
    297   case ISD::ADDC:                       return "addc";
    298   case ISD::ADDE:                       return "adde";
    299   case ISD::ADDCARRY:                   return "addcarry";
    300   case ISD::SADDO_CARRY:                return "saddo_carry";
    301   case ISD::SADDO:                      return "saddo";
    302   case ISD::UADDO:                      return "uaddo";
    303   case ISD::SSUBO:                      return "ssubo";
    304   case ISD::USUBO:                      return "usubo";
    305   case ISD::SMULO:                      return "smulo";
    306   case ISD::UMULO:                      return "umulo";
    307   case ISD::SUBC:                       return "subc";
    308   case ISD::SUBE:                       return "sube";
    309   case ISD::SUBCARRY:                   return "subcarry";
    310   case ISD::SSUBO_CARRY:                return "ssubo_carry";
    311   case ISD::SHL_PARTS:                  return "shl_parts";
    312   case ISD::SRA_PARTS:                  return "sra_parts";
    313   case ISD::SRL_PARTS:                  return "srl_parts";
    314 
    315   case ISD::SADDSAT:                    return "saddsat";
    316   case ISD::UADDSAT:                    return "uaddsat";
    317   case ISD::SSUBSAT:                    return "ssubsat";
    318   case ISD::USUBSAT:                    return "usubsat";
    319   case ISD::SSHLSAT:                    return "sshlsat";
    320   case ISD::USHLSAT:                    return "ushlsat";
    321 
    322   case ISD::SMULFIX:                    return "smulfix";
    323   case ISD::SMULFIXSAT:                 return "smulfixsat";
    324   case ISD::UMULFIX:                    return "umulfix";
    325   case ISD::UMULFIXSAT:                 return "umulfixsat";
    326 
    327   case ISD::SDIVFIX:                    return "sdivfix";
    328   case ISD::SDIVFIXSAT:                 return "sdivfixsat";
    329   case ISD::UDIVFIX:                    return "udivfix";
    330   case ISD::UDIVFIXSAT:                 return "udivfixsat";
    331 
    332   // Conversion operators.
    333   case ISD::SIGN_EXTEND:                return "sign_extend";
    334   case ISD::ZERO_EXTEND:                return "zero_extend";
    335   case ISD::ANY_EXTEND:                 return "any_extend";
    336   case ISD::SIGN_EXTEND_INREG:          return "sign_extend_inreg";
    337   case ISD::ANY_EXTEND_VECTOR_INREG:    return "any_extend_vector_inreg";
    338   case ISD::SIGN_EXTEND_VECTOR_INREG:   return "sign_extend_vector_inreg";
    339   case ISD::ZERO_EXTEND_VECTOR_INREG:   return "zero_extend_vector_inreg";
    340   case ISD::TRUNCATE:                   return "truncate";
    341   case ISD::FP_ROUND:                   return "fp_round";
    342   case ISD::STRICT_FP_ROUND:            return "strict_fp_round";
    343   case ISD::FP_EXTEND:                  return "fp_extend";
    344   case ISD::STRICT_FP_EXTEND:           return "strict_fp_extend";
    345 
    346   case ISD::SINT_TO_FP:                 return "sint_to_fp";
    347   case ISD::STRICT_SINT_TO_FP:          return "strict_sint_to_fp";
    348   case ISD::UINT_TO_FP:                 return "uint_to_fp";
    349   case ISD::STRICT_UINT_TO_FP:          return "strict_uint_to_fp";
    350   case ISD::FP_TO_SINT:                 return "fp_to_sint";
    351   case ISD::STRICT_FP_TO_SINT:          return "strict_fp_to_sint";
    352   case ISD::FP_TO_UINT:                 return "fp_to_uint";
    353   case ISD::STRICT_FP_TO_UINT:          return "strict_fp_to_uint";
    354   case ISD::FP_TO_SINT_SAT:             return "fp_to_sint_sat";
    355   case ISD::FP_TO_UINT_SAT:             return "fp_to_uint_sat";
    356   case ISD::BITCAST:                    return "bitcast";
    357   case ISD::ADDRSPACECAST:              return "addrspacecast";
    358   case ISD::FP16_TO_FP:                 return "fp16_to_fp";
    359   case ISD::STRICT_FP16_TO_FP:          return "strict_fp16_to_fp";
    360   case ISD::FP_TO_FP16:                 return "fp_to_fp16";
    361   case ISD::STRICT_FP_TO_FP16:          return "strict_fp_to_fp16";
    362   case ISD::LROUND:                     return "lround";
    363   case ISD::STRICT_LROUND:              return "strict_lround";
    364   case ISD::LLROUND:                    return "llround";
    365   case ISD::STRICT_LLROUND:             return "strict_llround";
    366   case ISD::LRINT:                      return "lrint";
    367   case ISD::STRICT_LRINT:               return "strict_lrint";
    368   case ISD::LLRINT:                     return "llrint";
    369   case ISD::STRICT_LLRINT:              return "strict_llrint";
    370 
    371     // Control flow instructions
    372   case ISD::BR:                         return "br";
    373   case ISD::BRIND:                      return "brind";
    374   case ISD::BR_JT:                      return "br_jt";
    375   case ISD::BRCOND:                     return "brcond";
    376   case ISD::BR_CC:                      return "br_cc";
    377   case ISD::CALLSEQ_START:              return "callseq_start";
    378   case ISD::CALLSEQ_END:                return "callseq_end";
    379 
    380     // EH instructions
    381   case ISD::CATCHRET:                   return "catchret";
    382   case ISD::CLEANUPRET:                 return "cleanupret";
    383 
    384     // Other operators
    385   case ISD::LOAD:                       return "load";
    386   case ISD::STORE:                      return "store";
    387   case ISD::MLOAD:                      return "masked_load";
    388   case ISD::MSTORE:                     return "masked_store";
    389   case ISD::MGATHER:                    return "masked_gather";
    390   case ISD::MSCATTER:                   return "masked_scatter";
    391   case ISD::VAARG:                      return "vaarg";
    392   case ISD::VACOPY:                     return "vacopy";
    393   case ISD::VAEND:                      return "vaend";
    394   case ISD::VASTART:                    return "vastart";
    395   case ISD::DYNAMIC_STACKALLOC:         return "dynamic_stackalloc";
    396   case ISD::EXTRACT_ELEMENT:            return "extract_element";
    397   case ISD::BUILD_PAIR:                 return "build_pair";
    398   case ISD::STACKSAVE:                  return "stacksave";
    399   case ISD::STACKRESTORE:               return "stackrestore";
    400   case ISD::TRAP:                       return "trap";
    401   case ISD::DEBUGTRAP:                  return "debugtrap";
    402   case ISD::UBSANTRAP:                  return "ubsantrap";
    403   case ISD::LIFETIME_START:             return "lifetime.start";
    404   case ISD::LIFETIME_END:               return "lifetime.end";
    405   case ISD::PSEUDO_PROBE:
    406     return "pseudoprobe";
    407   case ISD::GC_TRANSITION_START:        return "gc_transition.start";
    408   case ISD::GC_TRANSITION_END:          return "gc_transition.end";
    409   case ISD::GET_DYNAMIC_AREA_OFFSET:    return "get.dynamic.area.offset";
    410   case ISD::FREEZE:                     return "freeze";
    411   case ISD::PREALLOCATED_SETUP:
    412     return "call_setup";
    413   case ISD::PREALLOCATED_ARG:
    414     return "call_alloc";
    415 
    416   // Floating point environment manipulation
    417   case ISD::FLT_ROUNDS_:                return "flt_rounds";
    418   case ISD::SET_ROUNDING:               return "set_rounding";
    419 
    420   // Bit manipulation
    421   case ISD::ABS:                        return "abs";
    422   case ISD::BITREVERSE:                 return "bitreverse";
    423   case ISD::BSWAP:                      return "bswap";
    424   case ISD::CTPOP:                      return "ctpop";
    425   case ISD::CTTZ:                       return "cttz";
    426   case ISD::CTTZ_ZERO_UNDEF:            return "cttz_zero_undef";
    427   case ISD::CTLZ:                       return "ctlz";
    428   case ISD::CTLZ_ZERO_UNDEF:            return "ctlz_zero_undef";
    429   case ISD::PARITY:                     return "parity";
    430 
    431   // Trampolines
    432   case ISD::INIT_TRAMPOLINE:            return "init_trampoline";
    433   case ISD::ADJUST_TRAMPOLINE:          return "adjust_trampoline";
    434 
    435   case ISD::CONDCODE:
    436     switch (cast<CondCodeSDNode>(this)->get()) {
    437     default: llvm_unreachable("Unknown setcc condition!");
    438     case ISD::SETOEQ:                   return "setoeq";
    439     case ISD::SETOGT:                   return "setogt";
    440     case ISD::SETOGE:                   return "setoge";
    441     case ISD::SETOLT:                   return "setolt";
    442     case ISD::SETOLE:                   return "setole";
    443     case ISD::SETONE:                   return "setone";
    444 
    445     case ISD::SETO:                     return "seto";
    446     case ISD::SETUO:                    return "setuo";
    447     case ISD::SETUEQ:                   return "setueq";
    448     case ISD::SETUGT:                   return "setugt";
    449     case ISD::SETUGE:                   return "setuge";
    450     case ISD::SETULT:                   return "setult";
    451     case ISD::SETULE:                   return "setule";
    452     case ISD::SETUNE:                   return "setune";
    453 
    454     case ISD::SETEQ:                    return "seteq";
    455     case ISD::SETGT:                    return "setgt";
    456     case ISD::SETGE:                    return "setge";
    457     case ISD::SETLT:                    return "setlt";
    458     case ISD::SETLE:                    return "setle";
    459     case ISD::SETNE:                    return "setne";
    460 
    461     case ISD::SETTRUE:                  return "settrue";
    462     case ISD::SETTRUE2:                 return "settrue2";
    463     case ISD::SETFALSE:                 return "setfalse";
    464     case ISD::SETFALSE2:                return "setfalse2";
    465     }
    466   case ISD::VECREDUCE_FADD:             return "vecreduce_fadd";
    467   case ISD::VECREDUCE_SEQ_FADD:         return "vecreduce_seq_fadd";
    468   case ISD::VECREDUCE_FMUL:             return "vecreduce_fmul";
    469   case ISD::VECREDUCE_SEQ_FMUL:         return "vecreduce_seq_fmul";
    470   case ISD::VECREDUCE_ADD:              return "vecreduce_add";
    471   case ISD::VECREDUCE_MUL:              return "vecreduce_mul";
    472   case ISD::VECREDUCE_AND:              return "vecreduce_and";
    473   case ISD::VECREDUCE_OR:               return "vecreduce_or";
    474   case ISD::VECREDUCE_XOR:              return "vecreduce_xor";
    475   case ISD::VECREDUCE_SMAX:             return "vecreduce_smax";
    476   case ISD::VECREDUCE_SMIN:             return "vecreduce_smin";
    477   case ISD::VECREDUCE_UMAX:             return "vecreduce_umax";
    478   case ISD::VECREDUCE_UMIN:             return "vecreduce_umin";
    479   case ISD::VECREDUCE_FMAX:             return "vecreduce_fmax";
    480   case ISD::VECREDUCE_FMIN:             return "vecreduce_fmin";
    481 
    482     // Vector Predication
    483 #define BEGIN_REGISTER_VP_SDNODE(SDID, LEGALARG, NAME, ...)                    \
    484   case ISD::SDID:                                                              \
    485     return #NAME;
    486 #include "llvm/IR/VPIntrinsics.def"
    487   }
    488 }
    489 
    490 const char *SDNode::getIndexedModeName(ISD::MemIndexedMode AM) {
    491   switch (AM) {
    492   default:              return "";
    493   case ISD::PRE_INC:    return "<pre-inc>";
    494   case ISD::PRE_DEC:    return "<pre-dec>";
    495   case ISD::POST_INC:   return "<post-inc>";
    496   case ISD::POST_DEC:   return "<post-dec>";
    497   }
    498 }
    499 
    500 static Printable PrintNodeId(const SDNode &Node) {
    501   return Printable([&Node](raw_ostream &OS) {
    502 #ifndef NDEBUG
    503     OS << 't' << Node.PersistentId;
    504 #else
    505     OS << (const void*)&Node;
    506 #endif
    507   });
    508 }
    509 
    510 // Print the MMO with more information from the SelectionDAG.
    511 static void printMemOperand(raw_ostream &OS, const MachineMemOperand &MMO,
    512                             const MachineFunction *MF, const Module *M,
    513                             const MachineFrameInfo *MFI,
    514                             const TargetInstrInfo *TII, LLVMContext &Ctx) {
    515   ModuleSlotTracker MST(M);
    516   if (MF)
    517     MST.incorporateFunction(MF->getFunction());
    518   SmallVector<StringRef, 0> SSNs;
    519   MMO.print(OS, MST, SSNs, Ctx, MFI, TII);
    520 }
    521 
    522 static void printMemOperand(raw_ostream &OS, const MachineMemOperand &MMO,
    523                             const SelectionDAG *G) {
    524   if (G) {
    525     const MachineFunction *MF = &G->getMachineFunction();
    526     return printMemOperand(OS, MMO, MF, MF->getFunction().getParent(),
    527                            &MF->getFrameInfo(), G->getSubtarget().getInstrInfo(),
    528                            *G->getContext());
    529   } else {
    530     LLVMContext Ctx;
    531     return printMemOperand(OS, MMO, /*MF=*/nullptr, /*M=*/nullptr,
    532                            /*MFI=*/nullptr, /*TII=*/nullptr, Ctx);
    533   }
    534 }
    535 
    536 #if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)
    537 LLVM_DUMP_METHOD void SDNode::dump() const { dump(nullptr); }
    538 
    539 LLVM_DUMP_METHOD void SDNode::dump(const SelectionDAG *G) const {
    540   print(dbgs(), G);
    541   dbgs() << '\n';
    542 }
    543 #endif
    544 
    545 void SDNode::print_types(raw_ostream &OS, const SelectionDAG *G) const {
    546   for (unsigned i = 0, e = getNumValues(); i != e; ++i) {
    547     if (i) OS << ",";
    548     if (getValueType(i) == MVT::Other)
    549       OS << "ch";
    550     else
    551       OS << getValueType(i).getEVTString();
    552   }
    553 }
    554 
    555 void SDNode::print_details(raw_ostream &OS, const SelectionDAG *G) const {
    556   if (getFlags().hasNoUnsignedWrap())
    557     OS << " nuw";
    558 
    559   if (getFlags().hasNoSignedWrap())
    560     OS << " nsw";
    561 
    562   if (getFlags().hasExact())
    563     OS << " exact";
    564 
    565   if (getFlags().hasNoNaNs())
    566     OS << " nnan";
    567 
    568   if (getFlags().hasNoInfs())
    569     OS << " ninf";
    570 
    571   if (getFlags().hasNoSignedZeros())
    572     OS << " nsz";
    573 
    574   if (getFlags().hasAllowReciprocal())
    575     OS << " arcp";
    576 
    577   if (getFlags().hasAllowContract())
    578     OS << " contract";
    579 
    580   if (getFlags().hasApproximateFuncs())
    581     OS << " afn";
    582 
    583   if (getFlags().hasAllowReassociation())
    584     OS << " reassoc";
    585 
    586   if (getFlags().hasNoFPExcept())
    587     OS << " nofpexcept";
    588 
    589   if (const MachineSDNode *MN = dyn_cast<MachineSDNode>(this)) {
    590     if (!MN->memoperands_empty()) {
    591       OS << "<";
    592       OS << "Mem:";
    593       for (MachineSDNode::mmo_iterator i = MN->memoperands_begin(),
    594            e = MN->memoperands_end(); i != e; ++i) {
    595         printMemOperand(OS, **i, G);
    596         if (std::next(i) != e)
    597           OS << " ";
    598       }
    599       OS << ">";
    600     }
    601   } else if (const ShuffleVectorSDNode *SVN =
    602                dyn_cast<ShuffleVectorSDNode>(this)) {
    603     OS << "<";
    604     for (unsigned i = 0, e = ValueList[0].getVectorNumElements(); i != e; ++i) {
    605       int Idx = SVN->getMaskElt(i);
    606       if (i) OS << ",";
    607       if (Idx < 0)
    608         OS << "u";
    609       else
    610         OS << Idx;
    611     }
    612     OS << ">";
    613   } else if (const ConstantSDNode *CSDN = dyn_cast<ConstantSDNode>(this)) {
    614     OS << '<' << CSDN->getAPIntValue() << '>';
    615   } else if (const ConstantFPSDNode *CSDN = dyn_cast<ConstantFPSDNode>(this)) {
    616     if (&CSDN->getValueAPF().getSemantics() == &APFloat::IEEEsingle())
    617       OS << '<' << CSDN->getValueAPF().convertToFloat() << '>';
    618     else if (&CSDN->getValueAPF().getSemantics() == &APFloat::IEEEdouble())
    619       OS << '<' << CSDN->getValueAPF().convertToDouble() << '>';
    620     else {
    621       OS << "<APFloat(";
    622       CSDN->getValueAPF().bitcastToAPInt().print(OS, false);
    623       OS << ")>";
    624     }
    625   } else if (const GlobalAddressSDNode *GADN =
    626              dyn_cast<GlobalAddressSDNode>(this)) {
    627     int64_t offset = GADN->getOffset();
    628     OS << '<';
    629     GADN->getGlobal()->printAsOperand(OS);
    630     OS << '>';
    631     if (offset > 0)
    632       OS << " + " << offset;
    633     else
    634       OS << " " << offset;
    635     if (unsigned int TF = GADN->getTargetFlags())
    636       OS << " [TF=" << TF << ']';
    637   } else if (const FrameIndexSDNode *FIDN = dyn_cast<FrameIndexSDNode>(this)) {
    638     OS << "<" << FIDN->getIndex() << ">";
    639   } else if (const JumpTableSDNode *JTDN = dyn_cast<JumpTableSDNode>(this)) {
    640     OS << "<" << JTDN->getIndex() << ">";
    641     if (unsigned int TF = JTDN->getTargetFlags())
    642       OS << " [TF=" << TF << ']';
    643   } else if (const ConstantPoolSDNode *CP = dyn_cast<ConstantPoolSDNode>(this)){
    644     int offset = CP->getOffset();
    645     if (CP->isMachineConstantPoolEntry())
    646       OS << "<" << *CP->getMachineCPVal() << ">";
    647     else
    648       OS << "<" << *CP->getConstVal() << ">";
    649     if (offset > 0)
    650       OS << " + " << offset;
    651     else
    652       OS << " " << offset;
    653     if (unsigned int TF = CP->getTargetFlags())
    654       OS << " [TF=" << TF << ']';
    655   } else if (const TargetIndexSDNode *TI = dyn_cast<TargetIndexSDNode>(this)) {
    656     OS << "<" << TI->getIndex() << '+' << TI->getOffset() << ">";
    657     if (unsigned TF = TI->getTargetFlags())
    658       OS << " [TF=" << TF << ']';
    659   } else if (const BasicBlockSDNode *BBDN = dyn_cast<BasicBlockSDNode>(this)) {
    660     OS << "<";
    661     const Value *LBB = (const Value*)BBDN->getBasicBlock()->getBasicBlock();
    662     if (LBB)
    663       OS << LBB->getName() << " ";
    664     OS << (const void*)BBDN->getBasicBlock() << ">";
    665   } else if (const RegisterSDNode *R = dyn_cast<RegisterSDNode>(this)) {
    666     OS << ' ' << printReg(R->getReg(),
    667                           G ? G->getSubtarget().getRegisterInfo() : nullptr);
    668   } else if (const ExternalSymbolSDNode *ES =
    669              dyn_cast<ExternalSymbolSDNode>(this)) {
    670     OS << "'" << ES->getSymbol() << "'";
    671     if (unsigned int TF = ES->getTargetFlags())
    672       OS << " [TF=" << TF << ']';
    673   } else if (const SrcValueSDNode *M = dyn_cast<SrcValueSDNode>(this)) {
    674     if (M->getValue())
    675       OS << "<" << M->getValue() << ">";
    676     else
    677       OS << "<null>";
    678   } else if (const MDNodeSDNode *MD = dyn_cast<MDNodeSDNode>(this)) {
    679     if (MD->getMD())
    680       OS << "<" << MD->getMD() << ">";
    681     else
    682       OS << "<null>";
    683   } else if (const VTSDNode *N = dyn_cast<VTSDNode>(this)) {
    684     OS << ":" << N->getVT().getEVTString();
    685   }
    686   else if (const LoadSDNode *LD = dyn_cast<LoadSDNode>(this)) {
    687     OS << "<";
    688 
    689     printMemOperand(OS, *LD->getMemOperand(), G);
    690 
    691     bool doExt = true;
    692     switch (LD->getExtensionType()) {
    693     default: doExt = false; break;
    694     case ISD::EXTLOAD:  OS << ", anyext"; break;
    695     case ISD::SEXTLOAD: OS << ", sext"; break;
    696     case ISD::ZEXTLOAD: OS << ", zext"; break;
    697     }
    698     if (doExt)
    699       OS << " from " << LD->getMemoryVT().getEVTString();
    700 
    701     const char *AM = getIndexedModeName(LD->getAddressingMode());
    702     if (*AM)
    703       OS << ", " << AM;
    704 
    705     OS << ">";
    706   } else if (const StoreSDNode *ST = dyn_cast<StoreSDNode>(this)) {
    707     OS << "<";
    708     printMemOperand(OS, *ST->getMemOperand(), G);
    709 
    710     if (ST->isTruncatingStore())
    711       OS << ", trunc to " << ST->getMemoryVT().getEVTString();
    712 
    713     const char *AM = getIndexedModeName(ST->getAddressingMode());
    714     if (*AM)
    715       OS << ", " << AM;
    716 
    717     OS << ">";
    718   } else if (const MaskedLoadSDNode *MLd = dyn_cast<MaskedLoadSDNode>(this)) {
    719     OS << "<";
    720 
    721     printMemOperand(OS, *MLd->getMemOperand(), G);
    722 
    723     bool doExt = true;
    724     switch (MLd->getExtensionType()) {
    725     default: doExt = false; break;
    726     case ISD::EXTLOAD:  OS << ", anyext"; break;
    727     case ISD::SEXTLOAD: OS << ", sext"; break;
    728     case ISD::ZEXTLOAD: OS << ", zext"; break;
    729     }
    730     if (doExt)
    731       OS << " from " << MLd->getMemoryVT().getEVTString();
    732 
    733     const char *AM = getIndexedModeName(MLd->getAddressingMode());
    734     if (*AM)
    735       OS << ", " << AM;
    736 
    737     if (MLd->isExpandingLoad())
    738       OS << ", expanding";
    739 
    740     OS << ">";
    741   } else if (const MaskedStoreSDNode *MSt = dyn_cast<MaskedStoreSDNode>(this)) {
    742     OS << "<";
    743     printMemOperand(OS, *MSt->getMemOperand(), G);
    744 
    745     if (MSt->isTruncatingStore())
    746       OS << ", trunc to " << MSt->getMemoryVT().getEVTString();
    747 
    748     const char *AM = getIndexedModeName(MSt->getAddressingMode());
    749     if (*AM)
    750       OS << ", " << AM;
    751 
    752     if (MSt->isCompressingStore())
    753       OS << ", compressing";
    754 
    755     OS << ">";
    756   } else if (const auto *MGather = dyn_cast<MaskedGatherSDNode>(this)) {
    757     OS << "<";
    758     printMemOperand(OS, *MGather->getMemOperand(), G);
    759 
    760     bool doExt = true;
    761     switch (MGather->getExtensionType()) {
    762     default: doExt = false; break;
    763     case ISD::EXTLOAD:  OS << ", anyext"; break;
    764     case ISD::SEXTLOAD: OS << ", sext"; break;
    765     case ISD::ZEXTLOAD: OS << ", zext"; break;
    766     }
    767     if (doExt)
    768       OS << " from " << MGather->getMemoryVT().getEVTString();
    769 
    770     auto Signed = MGather->isIndexSigned() ? "signed" : "unsigned";
    771     auto Scaled = MGather->isIndexScaled() ? "scaled" : "unscaled";
    772     OS << ", " << Signed << " " << Scaled << " offset";
    773 
    774     OS << ">";
    775   } else if (const auto *MScatter = dyn_cast<MaskedScatterSDNode>(this)) {
    776     OS << "<";
    777     printMemOperand(OS, *MScatter->getMemOperand(), G);
    778 
    779     if (MScatter->isTruncatingStore())
    780       OS << ", trunc to " << MScatter->getMemoryVT().getEVTString();
    781 
    782     auto Signed = MScatter->isIndexSigned() ? "signed" : "unsigned";
    783     auto Scaled = MScatter->isIndexScaled() ? "scaled" : "unscaled";
    784     OS << ", " << Signed << " " << Scaled << " offset";
    785 
    786     OS << ">";
    787   } else if (const MemSDNode *M = dyn_cast<MemSDNode>(this)) {
    788     OS << "<";
    789     printMemOperand(OS, *M->getMemOperand(), G);
    790     OS << ">";
    791   } else if (const BlockAddressSDNode *BA =
    792                dyn_cast<BlockAddressSDNode>(this)) {
    793     int64_t offset = BA->getOffset();
    794     OS << "<";
    795     BA->getBlockAddress()->getFunction()->printAsOperand(OS, false);
    796     OS << ", ";
    797     BA->getBlockAddress()->getBasicBlock()->printAsOperand(OS, false);
    798     OS << ">";
    799     if (offset > 0)
    800       OS << " + " << offset;
    801     else
    802       OS << " " << offset;
    803     if (unsigned int TF = BA->getTargetFlags())
    804       OS << " [TF=" << TF << ']';
    805   } else if (const AddrSpaceCastSDNode *ASC =
    806                dyn_cast<AddrSpaceCastSDNode>(this)) {
    807     OS << '['
    808        << ASC->getSrcAddressSpace()
    809        << " -> "
    810        << ASC->getDestAddressSpace()
    811        << ']';
    812   } else if (const LifetimeSDNode *LN = dyn_cast<LifetimeSDNode>(this)) {
    813     if (LN->hasOffset())
    814       OS << "<" << LN->getOffset() << " to " << LN->getOffset() + LN->getSize() << ">";
    815   }
    816 
    817   if (VerboseDAGDumping) {
    818     if (unsigned Order = getIROrder())
    819         OS << " [ORD=" << Order << ']';
    820 
    821     if (getNodeId() != -1)
    822       OS << " [ID=" << getNodeId() << ']';
    823     if (!(isa<ConstantSDNode>(this) || (isa<ConstantFPSDNode>(this))))
    824       OS << " # D:" << isDivergent();
    825 
    826     if (G && !G->GetDbgValues(this).empty()) {
    827       OS << " [NoOfDbgValues=" << G->GetDbgValues(this).size() << ']';
    828       for (SDDbgValue *Dbg : G->GetDbgValues(this))
    829         if (!Dbg->isInvalidated())
    830           Dbg->print(OS);
    831     } else if (getHasDebugValue())
    832       OS << " [NoOfDbgValues>0]";
    833   }
    834 }
    835 
    836 LLVM_DUMP_METHOD void SDDbgValue::print(raw_ostream &OS) const {
    837   OS << " DbgVal(Order=" << getOrder() << ')';
    838   if (isInvalidated())
    839     OS << "(Invalidated)";
    840   if (isEmitted())
    841     OS << "(Emitted)";
    842   OS << "(";
    843   bool Comma = false;
    844   for (const SDDbgOperand &Op : getLocationOps()) {
    845     if (Comma)
    846       OS << ", ";
    847     switch (Op.getKind()) {
    848     case SDDbgOperand::SDNODE:
    849       if (Op.getSDNode())
    850         OS << "SDNODE=" << PrintNodeId(*Op.getSDNode()) << ':' << Op.getResNo();
    851       else
    852         OS << "SDNODE";
    853       break;
    854     case SDDbgOperand::CONST:
    855       OS << "CONST";
    856       break;
    857     case SDDbgOperand::FRAMEIX:
    858       OS << "FRAMEIX=" << Op.getFrameIx();
    859       break;
    860     case SDDbgOperand::VREG:
    861       OS << "VREG=" << Op.getVReg();
    862       break;
    863     }
    864     Comma = true;
    865   }
    866   OS << ")";
    867   if (isIndirect()) OS << "(Indirect)";
    868   if (isVariadic())
    869     OS << "(Variadic)";
    870   OS << ":\"" << Var->getName() << '"';
    871 #ifndef NDEBUG
    872   if (Expr->getNumElements())
    873     Expr->dump();
    874 #endif
    875 }
    876 
    877 #if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)
    878 LLVM_DUMP_METHOD void SDDbgValue::dump() const {
    879   if (isInvalidated())
    880     return;
    881   print(dbgs());
    882   dbgs() << "\n";
    883 }
    884 #endif
    885 
    886 /// Return true if this node is so simple that we should just print it inline
    887 /// if it appears as an operand.
    888 static bool shouldPrintInline(const SDNode &Node, const SelectionDAG *G) {
    889   // Avoid lots of cluttering when inline printing nodes with associated
    890   // DbgValues in verbose mode.
    891   if (VerboseDAGDumping && G && !G->GetDbgValues(&Node).empty())
    892     return false;
    893   if (Node.getOpcode() == ISD::EntryToken)
    894     return false;
    895   return Node.getNumOperands() == 0;
    896 }
    897 
    898 #if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)
    899 static void DumpNodes(const SDNode *N, unsigned indent, const SelectionDAG *G) {
    900   for (const SDValue &Op : N->op_values()) {
    901     if (shouldPrintInline(*Op.getNode(), G))
    902       continue;
    903     if (Op.getNode()->hasOneUse())
    904       DumpNodes(Op.getNode(), indent+2, G);
    905   }
    906 
    907   dbgs().indent(indent);
    908   N->dump(G);
    909 }
    910 
    911 LLVM_DUMP_METHOD void SelectionDAG::dump() const {
    912   dbgs() << "SelectionDAG has " << AllNodes.size() << " nodes:\n";
    913 
    914   for (const SDNode &N : allnodes()) {
    915     if (!N.hasOneUse() && &N != getRoot().getNode() &&
    916         (!shouldPrintInline(N, this) || N.use_empty()))
    917       DumpNodes(&N, 2, this);
    918   }
    919 
    920   if (getRoot().getNode()) DumpNodes(getRoot().getNode(), 2, this);
    921   dbgs() << "\n";
    922 
    923   if (VerboseDAGDumping) {
    924     if (DbgBegin() != DbgEnd())
    925       dbgs() << "SDDbgValues:\n";
    926     for (auto *Dbg : make_range(DbgBegin(), DbgEnd()))
    927       Dbg->dump();
    928     if (ByvalParmDbgBegin() != ByvalParmDbgEnd())
    929       dbgs() << "Byval SDDbgValues:\n";
    930     for (auto *Dbg : make_range(ByvalParmDbgBegin(), ByvalParmDbgEnd()))
    931       Dbg->dump();
    932   }
    933   dbgs() << "\n";
    934 }
    935 #endif
    936 
    937 void SDNode::printr(raw_ostream &OS, const SelectionDAG *G) const {
    938   OS << PrintNodeId(*this) << ": ";
    939   print_types(OS, G);
    940   OS << " = " << getOperationName(G);
    941   print_details(OS, G);
    942 }
    943 
    944 static bool printOperand(raw_ostream &OS, const SelectionDAG *G,
    945                          const SDValue Value) {
    946   if (!Value.getNode()) {
    947     OS << "<null>";
    948     return false;
    949   } else if (shouldPrintInline(*Value.getNode(), G)) {
    950     OS << Value->getOperationName(G) << ':';
    951     Value->print_types(OS, G);
    952     Value->print_details(OS, G);
    953     return true;
    954   } else {
    955     OS << PrintNodeId(*Value.getNode());
    956     if (unsigned RN = Value.getResNo())
    957       OS << ':' << RN;
    958     return false;
    959   }
    960 }
    961 
    962 #if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)
    963 using VisitedSDNodeSet = SmallPtrSet<const SDNode *, 32>;
    964 
    965 static void DumpNodesr(raw_ostream &OS, const SDNode *N, unsigned indent,
    966                        const SelectionDAG *G, VisitedSDNodeSet &once) {
    967   if (!once.insert(N).second) // If we've been here before, return now.
    968     return;
    969 
    970   // Dump the current SDNode, but don't end the line yet.
    971   OS.indent(indent);
    972   N->printr(OS, G);
    973 
    974   // Having printed this SDNode, walk the children:
    975   for (unsigned i = 0, e = N->getNumOperands(); i != e; ++i) {
    976     if (i) OS << ",";
    977     OS << " ";
    978 
    979     const SDValue Op = N->getOperand(i);
    980     bool printedInline = printOperand(OS, G, Op);
    981     if (printedInline)
    982       once.insert(Op.getNode());
    983   }
    984 
    985   OS << "\n";
    986 
    987   // Dump children that have grandchildren on their own line(s).
    988   for (const SDValue &Op : N->op_values())
    989     DumpNodesr(OS, Op.getNode(), indent+2, G, once);
    990 }
    991 
    992 LLVM_DUMP_METHOD void SDNode::dumpr() const {
    993   VisitedSDNodeSet once;
    994   DumpNodesr(dbgs(), this, 0, nullptr, once);
    995 }
    996 
    997 LLVM_DUMP_METHOD void SDNode::dumpr(const SelectionDAG *G) const {
    998   VisitedSDNodeSet once;
    999   DumpNodesr(dbgs(), this, 0, G, once);
   1000 }
   1001 #endif
   1002 
   1003 static void printrWithDepthHelper(raw_ostream &OS, const SDNode *N,
   1004                                   const SelectionDAG *G, unsigned depth,
   1005                                   unsigned indent) {
   1006   if (depth == 0)
   1007     return;
   1008 
   1009   OS.indent(indent);
   1010 
   1011   N->print(OS, G);
   1012 
   1013   if (depth < 1)
   1014     return;
   1015 
   1016   for (const SDValue &Op : N->op_values()) {
   1017     // Don't follow chain operands.
   1018     if (Op.getValueType() == MVT::Other)
   1019       continue;
   1020     OS << '\n';
   1021     printrWithDepthHelper(OS, Op.getNode(), G, depth-1, indent+2);
   1022   }
   1023 }
   1024 
   1025 void SDNode::printrWithDepth(raw_ostream &OS, const SelectionDAG *G,
   1026                             unsigned depth) const {
   1027   printrWithDepthHelper(OS, this, G, depth, 0);
   1028 }
   1029 
   1030 void SDNode::printrFull(raw_ostream &OS, const SelectionDAG *G) const {
   1031   // Don't print impossibly deep things.
   1032   printrWithDepth(OS, G, 10);
   1033 }
   1034 
   1035 #if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)
   1036 LLVM_DUMP_METHOD
   1037 void SDNode::dumprWithDepth(const SelectionDAG *G, unsigned depth) const {
   1038   printrWithDepth(dbgs(), G, depth);
   1039 }
   1040 
   1041 LLVM_DUMP_METHOD void SDNode::dumprFull(const SelectionDAG *G) const {
   1042   // Don't print impossibly deep things.
   1043   dumprWithDepth(G, 10);
   1044 }
   1045 #endif
   1046 
   1047 void SDNode::print(raw_ostream &OS, const SelectionDAG *G) const {
   1048   printr(OS, G);
   1049   for (unsigned i = 0, e = getNumOperands(); i != e; ++i) {
   1050     if (i) OS << ", "; else OS << " ";
   1051     printOperand(OS, G, getOperand(i));
   1052   }
   1053   if (DebugLoc DL = getDebugLoc()) {
   1054     OS << ", ";
   1055     DL.print(OS);
   1056   }
   1057 }
   1058