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 "SDNodeDbgValue.h"
14 #include "llvm/ADT/APFloat.h"
15 #include "llvm/ADT/APInt.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 <cstdint>
49 #include <iterator>
50 
51 using namespace llvm;
52 
53 static cl::opt<bool>
54 VerboseDAGDumping("dag-dump-verbose", cl::Hidden,
55                   cl::desc("Display more information when dumping selection "
56                            "DAG nodes."));
57 
58 std::string SDNode::getOperationName(const SelectionDAG *G) const {
59   switch (getOpcode()) {
60   default:
61     if (getOpcode() < ISD::BUILTIN_OP_END)
62       return "<<Unknown DAG Node>>";
63     if (isMachineOpcode()) {
64       if (G)
65         if (const TargetInstrInfo *TII = G->getSubtarget().getInstrInfo())
66           if (getMachineOpcode() < TII->getNumOpcodes())
67             return std::string(TII->getName(getMachineOpcode()));
68       return "<<Unknown Machine Node #" + utostr(getOpcode()) + ">>";
69     }
70     if (G) {
71       const TargetLowering &TLI = G->getTargetLoweringInfo();
72       const char *Name = TLI.getTargetNodeName(getOpcode());
73       if (Name) return Name;
74       return "<<Unknown Target Node #" + utostr(getOpcode()) + ">>";
75     }
76     return "<<Unknown Node #" + utostr(getOpcode()) + ">>";
77 
78 #ifndef NDEBUG
79   case ISD::DELETED_NODE:               return "<<Deleted Node!>>";
80 #endif
81   case ISD::PREFETCH:                   return "Prefetch";
82   case ISD::MEMBARRIER:                 return "MemBarrier";
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_UINC_WRAP:
100     return "AtomicLoadUIncWrap";
101   case ISD::ATOMIC_LOAD_UDEC_WRAP:
102     return "AtomicLoadUDecWrap";
103   case ISD::ATOMIC_LOAD:                return "AtomicLoad";
104   case ISD::ATOMIC_STORE:               return "AtomicStore";
105   case ISD::PCMARKER:                   return "PCMarker";
106   case ISD::READCYCLECOUNTER:           return "ReadCycleCounter";
107   case ISD::SRCVALUE:                   return "SrcValue";
108   case ISD::MDNODE_SDNODE:              return "MDNode";
109   case ISD::EntryToken:                 return "EntryToken";
110   case ISD::TokenFactor:                return "TokenFactor";
111   case ISD::AssertSext:                 return "AssertSext";
112   case ISD::AssertZext:                 return "AssertZext";
113   case ISD::AssertAlign:                return "AssertAlign";
114 
115   case ISD::BasicBlock:                 return "BasicBlock";
116   case ISD::VALUETYPE:                  return "ValueType";
117   case ISD::Register:                   return "Register";
118   case ISD::RegisterMask:               return "RegisterMask";
119   case ISD::Constant:
120     if (cast<ConstantSDNode>(this)->isOpaque())
121       return "OpaqueConstant";
122     return "Constant";
123   case ISD::ConstantFP:                 return "ConstantFP";
124   case ISD::GlobalAddress:              return "GlobalAddress";
125   case ISD::GlobalTLSAddress:           return "GlobalTLSAddress";
126   case ISD::FrameIndex:                 return "FrameIndex";
127   case ISD::JumpTable:                  return "JumpTable";
128   case ISD::GLOBAL_OFFSET_TABLE:        return "GLOBAL_OFFSET_TABLE";
129   case ISD::RETURNADDR:                 return "RETURNADDR";
130   case ISD::ADDROFRETURNADDR:           return "ADDROFRETURNADDR";
131   case ISD::FRAMEADDR:                  return "FRAMEADDR";
132   case ISD::SPONENTRY:                  return "SPONENTRY";
133   case ISD::LOCAL_RECOVER:              return "LOCAL_RECOVER";
134   case ISD::READ_REGISTER:              return "READ_REGISTER";
135   case ISD::WRITE_REGISTER:             return "WRITE_REGISTER";
136   case ISD::FRAME_TO_ARGS_OFFSET:       return "FRAME_TO_ARGS_OFFSET";
137   case ISD::EH_DWARF_CFA:               return "EH_DWARF_CFA";
138   case ISD::EH_RETURN:                  return "EH_RETURN";
139   case ISD::EH_SJLJ_SETJMP:             return "EH_SJLJ_SETJMP";
140   case ISD::EH_SJLJ_LONGJMP:            return "EH_SJLJ_LONGJMP";
141   case ISD::EH_SJLJ_SETUP_DISPATCH:     return "EH_SJLJ_SETUP_DISPATCH";
142   case ISD::ConstantPool:               return "ConstantPool";
143   case ISD::TargetIndex:                return "TargetIndex";
144   case ISD::ExternalSymbol:             return "ExternalSymbol";
145   case ISD::BlockAddress:               return "BlockAddress";
146   case ISD::INTRINSIC_WO_CHAIN:
147   case ISD::INTRINSIC_VOID:
148   case ISD::INTRINSIC_W_CHAIN: {
149     unsigned OpNo = getOpcode() == ISD::INTRINSIC_WO_CHAIN ? 0 : 1;
150     unsigned IID = cast<ConstantSDNode>(getOperand(OpNo))->getZExtValue();
151     if (IID < Intrinsic::num_intrinsics)
152       return Intrinsic::getBaseName((Intrinsic::ID)IID).str();
153     if (!G)
154       return "Unknown intrinsic";
155     if (const TargetIntrinsicInfo *TII = G->getTarget().getIntrinsicInfo())
156       return TII->getName(IID);
157     llvm_unreachable("Invalid intrinsic ID");
158   }
159 
160   case ISD::BUILD_VECTOR:               return "BUILD_VECTOR";
161   case ISD::TargetConstant:
162     if (cast<ConstantSDNode>(this)->isOpaque())
163       return "OpaqueTargetConstant";
164     return "TargetConstant";
165   case ISD::TargetConstantFP:           return "TargetConstantFP";
166   case ISD::TargetGlobalAddress:        return "TargetGlobalAddress";
167   case ISD::TargetGlobalTLSAddress:     return "TargetGlobalTLSAddress";
168   case ISD::TargetFrameIndex:           return "TargetFrameIndex";
169   case ISD::TargetJumpTable:            return "TargetJumpTable";
170   case ISD::TargetConstantPool:         return "TargetConstantPool";
171   case ISD::TargetExternalSymbol:       return "TargetExternalSymbol";
172   case ISD::MCSymbol:                   return "MCSymbol";
173   case ISD::TargetBlockAddress:         return "TargetBlockAddress";
174 
175   case ISD::CopyToReg:                  return "CopyToReg";
176   case ISD::CopyFromReg:                return "CopyFromReg";
177   case ISD::UNDEF:                      return "undef";
178   case ISD::VSCALE:                     return "vscale";
179   case ISD::MERGE_VALUES:               return "merge_values";
180   case ISD::INLINEASM:                  return "inlineasm";
181   case ISD::INLINEASM_BR:               return "inlineasm_br";
182   case ISD::EH_LABEL:                   return "eh_label";
183   case ISD::ANNOTATION_LABEL:           return "annotation_label";
184   case ISD::HANDLENODE:                 return "handlenode";
185 
186   // Unary operators
187   case ISD::FABS:                       return "fabs";
188   case ISD::FMINNUM:                    return "fminnum";
189   case ISD::STRICT_FMINNUM:             return "strict_fminnum";
190   case ISD::FMAXNUM:                    return "fmaxnum";
191   case ISD::STRICT_FMAXNUM:             return "strict_fmaxnum";
192   case ISD::FMINNUM_IEEE:               return "fminnum_ieee";
193   case ISD::FMAXNUM_IEEE:               return "fmaxnum_ieee";
194   case ISD::FMINIMUM:                   return "fminimum";
195   case ISD::STRICT_FMINIMUM:            return "strict_fminimum";
196   case ISD::FMAXIMUM:                   return "fmaximum";
197   case ISD::STRICT_FMAXIMUM:            return "strict_fmaximum";
198   case ISD::FNEG:                       return "fneg";
199   case ISD::FSQRT:                      return "fsqrt";
200   case ISD::STRICT_FSQRT:               return "strict_fsqrt";
201   case ISD::FCBRT:                      return "fcbrt";
202   case ISD::FSIN:                       return "fsin";
203   case ISD::STRICT_FSIN:                return "strict_fsin";
204   case ISD::FCOS:                       return "fcos";
205   case ISD::STRICT_FCOS:                return "strict_fcos";
206   case ISD::FSINCOS:                    return "fsincos";
207   case ISD::FTRUNC:                     return "ftrunc";
208   case ISD::STRICT_FTRUNC:              return "strict_ftrunc";
209   case ISD::FFLOOR:                     return "ffloor";
210   case ISD::STRICT_FFLOOR:              return "strict_ffloor";
211   case ISD::FCEIL:                      return "fceil";
212   case ISD::STRICT_FCEIL:               return "strict_fceil";
213   case ISD::FRINT:                      return "frint";
214   case ISD::STRICT_FRINT:               return "strict_frint";
215   case ISD::FNEARBYINT:                 return "fnearbyint";
216   case ISD::STRICT_FNEARBYINT:          return "strict_fnearbyint";
217   case ISD::FROUND:                     return "fround";
218   case ISD::STRICT_FROUND:              return "strict_fround";
219   case ISD::FROUNDEVEN:                 return "froundeven";
220   case ISD::STRICT_FROUNDEVEN:          return "strict_froundeven";
221   case ISD::FEXP:                       return "fexp";
222   case ISD::STRICT_FEXP:                return "strict_fexp";
223   case ISD::FEXP2:                      return "fexp2";
224   case ISD::STRICT_FEXP2:               return "strict_fexp2";
225   case ISD::FLOG:                       return "flog";
226   case ISD::STRICT_FLOG:                return "strict_flog";
227   case ISD::FLOG2:                      return "flog2";
228   case ISD::STRICT_FLOG2:               return "strict_flog2";
229   case ISD::FLOG10:                     return "flog10";
230   case ISD::STRICT_FLOG10:              return "strict_flog10";
231 
232   // Binary operators
233   case ISD::ADD:                        return "add";
234   case ISD::SUB:                        return "sub";
235   case ISD::MUL:                        return "mul";
236   case ISD::MULHU:                      return "mulhu";
237   case ISD::MULHS:                      return "mulhs";
238   case ISD::AVGFLOORU:                  return "avgflooru";
239   case ISD::AVGFLOORS:                  return "avgfloors";
240   case ISD::AVGCEILU:                   return "avgceilu";
241   case ISD::AVGCEILS:                   return "avgceils";
242   case ISD::ABDS:                       return "abds";
243   case ISD::ABDU:                       return "abdu";
244   case ISD::SDIV:                       return "sdiv";
245   case ISD::UDIV:                       return "udiv";
246   case ISD::SREM:                       return "srem";
247   case ISD::UREM:                       return "urem";
248   case ISD::SMUL_LOHI:                  return "smul_lohi";
249   case ISD::UMUL_LOHI:                  return "umul_lohi";
250   case ISD::SDIVREM:                    return "sdivrem";
251   case ISD::UDIVREM:                    return "udivrem";
252   case ISD::AND:                        return "and";
253   case ISD::OR:                         return "or";
254   case ISD::XOR:                        return "xor";
255   case ISD::SHL:                        return "shl";
256   case ISD::SRA:                        return "sra";
257   case ISD::SRL:                        return "srl";
258   case ISD::ROTL:                       return "rotl";
259   case ISD::ROTR:                       return "rotr";
260   case ISD::FSHL:                       return "fshl";
261   case ISD::FSHR:                       return "fshr";
262   case ISD::FADD:                       return "fadd";
263   case ISD::STRICT_FADD:                return "strict_fadd";
264   case ISD::FSUB:                       return "fsub";
265   case ISD::STRICT_FSUB:                return "strict_fsub";
266   case ISD::FMUL:                       return "fmul";
267   case ISD::STRICT_FMUL:                return "strict_fmul";
268   case ISD::FDIV:                       return "fdiv";
269   case ISD::STRICT_FDIV:                return "strict_fdiv";
270   case ISD::FMA:                        return "fma";
271   case ISD::STRICT_FMA:                 return "strict_fma";
272   case ISD::FMAD:                       return "fmad";
273   case ISD::FREM:                       return "frem";
274   case ISD::STRICT_FREM:                return "strict_frem";
275   case ISD::FCOPYSIGN:                  return "fcopysign";
276   case ISD::FGETSIGN:                   return "fgetsign";
277   case ISD::FCANONICALIZE:              return "fcanonicalize";
278   case ISD::IS_FPCLASS:                 return "is_fpclass";
279   case ISD::FPOW:                       return "fpow";
280   case ISD::STRICT_FPOW:                return "strict_fpow";
281   case ISD::SMIN:                       return "smin";
282   case ISD::SMAX:                       return "smax";
283   case ISD::UMIN:                       return "umin";
284   case ISD::UMAX:                       return "umax";
285 
286   case ISD::FPOWI:                      return "fpowi";
287   case ISD::STRICT_FPOWI:               return "strict_fpowi";
288   case ISD::SETCC:                      return "setcc";
289   case ISD::SETCCCARRY:                 return "setcccarry";
290   case ISD::STRICT_FSETCC:              return "strict_fsetcc";
291   case ISD::STRICT_FSETCCS:             return "strict_fsetccs";
292   case ISD::SELECT:                     return "select";
293   case ISD::VSELECT:                    return "vselect";
294   case ISD::SELECT_CC:                  return "select_cc";
295   case ISD::INSERT_VECTOR_ELT:          return "insert_vector_elt";
296   case ISD::EXTRACT_VECTOR_ELT:         return "extract_vector_elt";
297   case ISD::CONCAT_VECTORS:             return "concat_vectors";
298   case ISD::INSERT_SUBVECTOR:           return "insert_subvector";
299   case ISD::EXTRACT_SUBVECTOR:          return "extract_subvector";
300   case ISD::SCALAR_TO_VECTOR:           return "scalar_to_vector";
301   case ISD::VECTOR_SHUFFLE:             return "vector_shuffle";
302   case ISD::VECTOR_SPLICE:              return "vector_splice";
303   case ISD::SPLAT_VECTOR:               return "splat_vector";
304   case ISD::SPLAT_VECTOR_PARTS:         return "splat_vector_parts";
305   case ISD::VECTOR_REVERSE:             return "vector_reverse";
306   case ISD::STEP_VECTOR:                return "step_vector";
307   case ISD::CARRY_FALSE:                return "carry_false";
308   case ISD::ADDC:                       return "addc";
309   case ISD::ADDE:                       return "adde";
310   case ISD::ADDCARRY:                   return "addcarry";
311   case ISD::SADDO_CARRY:                return "saddo_carry";
312   case ISD::SADDO:                      return "saddo";
313   case ISD::UADDO:                      return "uaddo";
314   case ISD::SSUBO:                      return "ssubo";
315   case ISD::USUBO:                      return "usubo";
316   case ISD::SMULO:                      return "smulo";
317   case ISD::UMULO:                      return "umulo";
318   case ISD::SUBC:                       return "subc";
319   case ISD::SUBE:                       return "sube";
320   case ISD::SUBCARRY:                   return "subcarry";
321   case ISD::SSUBO_CARRY:                return "ssubo_carry";
322   case ISD::SHL_PARTS:                  return "shl_parts";
323   case ISD::SRA_PARTS:                  return "sra_parts";
324   case ISD::SRL_PARTS:                  return "srl_parts";
325 
326   case ISD::SADDSAT:                    return "saddsat";
327   case ISD::UADDSAT:                    return "uaddsat";
328   case ISD::SSUBSAT:                    return "ssubsat";
329   case ISD::USUBSAT:                    return "usubsat";
330   case ISD::SSHLSAT:                    return "sshlsat";
331   case ISD::USHLSAT:                    return "ushlsat";
332 
333   case ISD::SMULFIX:                    return "smulfix";
334   case ISD::SMULFIXSAT:                 return "smulfixsat";
335   case ISD::UMULFIX:                    return "umulfix";
336   case ISD::UMULFIXSAT:                 return "umulfixsat";
337 
338   case ISD::SDIVFIX:                    return "sdivfix";
339   case ISD::SDIVFIXSAT:                 return "sdivfixsat";
340   case ISD::UDIVFIX:                    return "udivfix";
341   case ISD::UDIVFIXSAT:                 return "udivfixsat";
342 
343   // Conversion operators.
344   case ISD::SIGN_EXTEND:                return "sign_extend";
345   case ISD::ZERO_EXTEND:                return "zero_extend";
346   case ISD::ANY_EXTEND:                 return "any_extend";
347   case ISD::SIGN_EXTEND_INREG:          return "sign_extend_inreg";
348   case ISD::ANY_EXTEND_VECTOR_INREG:    return "any_extend_vector_inreg";
349   case ISD::SIGN_EXTEND_VECTOR_INREG:   return "sign_extend_vector_inreg";
350   case ISD::ZERO_EXTEND_VECTOR_INREG:   return "zero_extend_vector_inreg";
351   case ISD::TRUNCATE:                   return "truncate";
352   case ISD::FP_ROUND:                   return "fp_round";
353   case ISD::STRICT_FP_ROUND:            return "strict_fp_round";
354   case ISD::FP_EXTEND:                  return "fp_extend";
355   case ISD::STRICT_FP_EXTEND:           return "strict_fp_extend";
356 
357   case ISD::SINT_TO_FP:                 return "sint_to_fp";
358   case ISD::STRICT_SINT_TO_FP:          return "strict_sint_to_fp";
359   case ISD::UINT_TO_FP:                 return "uint_to_fp";
360   case ISD::STRICT_UINT_TO_FP:          return "strict_uint_to_fp";
361   case ISD::FP_TO_SINT:                 return "fp_to_sint";
362   case ISD::STRICT_FP_TO_SINT:          return "strict_fp_to_sint";
363   case ISD::FP_TO_UINT:                 return "fp_to_uint";
364   case ISD::STRICT_FP_TO_UINT:          return "strict_fp_to_uint";
365   case ISD::FP_TO_SINT_SAT:             return "fp_to_sint_sat";
366   case ISD::FP_TO_UINT_SAT:             return "fp_to_uint_sat";
367   case ISD::BITCAST:                    return "bitcast";
368   case ISD::ADDRSPACECAST:              return "addrspacecast";
369   case ISD::FP16_TO_FP:                 return "fp16_to_fp";
370   case ISD::STRICT_FP16_TO_FP:          return "strict_fp16_to_fp";
371   case ISD::FP_TO_FP16:                 return "fp_to_fp16";
372   case ISD::STRICT_FP_TO_FP16:          return "strict_fp_to_fp16";
373   case ISD::BF16_TO_FP:                 return "bf16_to_fp";
374   case ISD::FP_TO_BF16:                 return "fp_to_bf16";
375   case ISD::LROUND:                     return "lround";
376   case ISD::STRICT_LROUND:              return "strict_lround";
377   case ISD::LLROUND:                    return "llround";
378   case ISD::STRICT_LLROUND:             return "strict_llround";
379   case ISD::LRINT:                      return "lrint";
380   case ISD::STRICT_LRINT:               return "strict_lrint";
381   case ISD::LLRINT:                     return "llrint";
382   case ISD::STRICT_LLRINT:              return "strict_llrint";
383 
384     // Control flow instructions
385   case ISD::BR:                         return "br";
386   case ISD::BRIND:                      return "brind";
387   case ISD::BR_JT:                      return "br_jt";
388   case ISD::BRCOND:                     return "brcond";
389   case ISD::BR_CC:                      return "br_cc";
390   case ISD::CALLSEQ_START:              return "callseq_start";
391   case ISD::CALLSEQ_END:                return "callseq_end";
392 
393     // EH instructions
394   case ISD::CATCHRET:                   return "catchret";
395   case ISD::CLEANUPRET:                 return "cleanupret";
396 
397     // Other operators
398   case ISD::LOAD:                       return "load";
399   case ISD::STORE:                      return "store";
400   case ISD::MLOAD:                      return "masked_load";
401   case ISD::MSTORE:                     return "masked_store";
402   case ISD::MGATHER:                    return "masked_gather";
403   case ISD::MSCATTER:                   return "masked_scatter";
404   case ISD::VAARG:                      return "vaarg";
405   case ISD::VACOPY:                     return "vacopy";
406   case ISD::VAEND:                      return "vaend";
407   case ISD::VASTART:                    return "vastart";
408   case ISD::DYNAMIC_STACKALLOC:         return "dynamic_stackalloc";
409   case ISD::EXTRACT_ELEMENT:            return "extract_element";
410   case ISD::BUILD_PAIR:                 return "build_pair";
411   case ISD::STACKSAVE:                  return "stacksave";
412   case ISD::STACKRESTORE:               return "stackrestore";
413   case ISD::TRAP:                       return "trap";
414   case ISD::DEBUGTRAP:                  return "debugtrap";
415   case ISD::UBSANTRAP:                  return "ubsantrap";
416   case ISD::LIFETIME_START:             return "lifetime.start";
417   case ISD::LIFETIME_END:               return "lifetime.end";
418   case ISD::PSEUDO_PROBE:
419     return "pseudoprobe";
420   case ISD::GC_TRANSITION_START:        return "gc_transition.start";
421   case ISD::GC_TRANSITION_END:          return "gc_transition.end";
422   case ISD::GET_DYNAMIC_AREA_OFFSET:    return "get.dynamic.area.offset";
423   case ISD::FREEZE:                     return "freeze";
424   case ISD::PREALLOCATED_SETUP:
425     return "call_setup";
426   case ISD::PREALLOCATED_ARG:
427     return "call_alloc";
428 
429   // Floating point environment manipulation
430   case ISD::GET_ROUNDING:               return "get_rounding";
431   case ISD::SET_ROUNDING:               return "set_rounding";
432 
433   // Bit manipulation
434   case ISD::ABS:                        return "abs";
435   case ISD::BITREVERSE:                 return "bitreverse";
436   case ISD::BSWAP:                      return "bswap";
437   case ISD::CTPOP:                      return "ctpop";
438   case ISD::CTTZ:                       return "cttz";
439   case ISD::CTTZ_ZERO_UNDEF:            return "cttz_zero_undef";
440   case ISD::CTLZ:                       return "ctlz";
441   case ISD::CTLZ_ZERO_UNDEF:            return "ctlz_zero_undef";
442   case ISD::PARITY:                     return "parity";
443 
444   // Trampolines
445   case ISD::INIT_TRAMPOLINE:            return "init_trampoline";
446   case ISD::ADJUST_TRAMPOLINE:          return "adjust_trampoline";
447 
448   case ISD::CONDCODE:
449     switch (cast<CondCodeSDNode>(this)->get()) {
450     default: llvm_unreachable("Unknown setcc condition!");
451     case ISD::SETOEQ:                   return "setoeq";
452     case ISD::SETOGT:                   return "setogt";
453     case ISD::SETOGE:                   return "setoge";
454     case ISD::SETOLT:                   return "setolt";
455     case ISD::SETOLE:                   return "setole";
456     case ISD::SETONE:                   return "setone";
457 
458     case ISD::SETO:                     return "seto";
459     case ISD::SETUO:                    return "setuo";
460     case ISD::SETUEQ:                   return "setueq";
461     case ISD::SETUGT:                   return "setugt";
462     case ISD::SETUGE:                   return "setuge";
463     case ISD::SETULT:                   return "setult";
464     case ISD::SETULE:                   return "setule";
465     case ISD::SETUNE:                   return "setune";
466 
467     case ISD::SETEQ:                    return "seteq";
468     case ISD::SETGT:                    return "setgt";
469     case ISD::SETGE:                    return "setge";
470     case ISD::SETLT:                    return "setlt";
471     case ISD::SETLE:                    return "setle";
472     case ISD::SETNE:                    return "setne";
473 
474     case ISD::SETTRUE:                  return "settrue";
475     case ISD::SETTRUE2:                 return "settrue2";
476     case ISD::SETFALSE:                 return "setfalse";
477     case ISD::SETFALSE2:                return "setfalse2";
478     }
479   case ISD::VECREDUCE_FADD:             return "vecreduce_fadd";
480   case ISD::VECREDUCE_SEQ_FADD:         return "vecreduce_seq_fadd";
481   case ISD::VECREDUCE_FMUL:             return "vecreduce_fmul";
482   case ISD::VECREDUCE_SEQ_FMUL:         return "vecreduce_seq_fmul";
483   case ISD::VECREDUCE_ADD:              return "vecreduce_add";
484   case ISD::VECREDUCE_MUL:              return "vecreduce_mul";
485   case ISD::VECREDUCE_AND:              return "vecreduce_and";
486   case ISD::VECREDUCE_OR:               return "vecreduce_or";
487   case ISD::VECREDUCE_XOR:              return "vecreduce_xor";
488   case ISD::VECREDUCE_SMAX:             return "vecreduce_smax";
489   case ISD::VECREDUCE_SMIN:             return "vecreduce_smin";
490   case ISD::VECREDUCE_UMAX:             return "vecreduce_umax";
491   case ISD::VECREDUCE_UMIN:             return "vecreduce_umin";
492   case ISD::VECREDUCE_FMAX:             return "vecreduce_fmax";
493   case ISD::VECREDUCE_FMIN:             return "vecreduce_fmin";
494   case ISD::STACKMAP:
495     return "stackmap";
496   case ISD::PATCHPOINT:
497     return "patchpoint";
498 
499     // Vector Predication
500 #define BEGIN_REGISTER_VP_SDNODE(SDID, LEGALARG, NAME, ...)                    \
501   case ISD::SDID:                                                              \
502     return #NAME;
503 #include "llvm/IR/VPIntrinsics.def"
504   }
505 }
506 
507 const char *SDNode::getIndexedModeName(ISD::MemIndexedMode AM) {
508   switch (AM) {
509   default:              return "";
510   case ISD::PRE_INC:    return "<pre-inc>";
511   case ISD::PRE_DEC:    return "<pre-dec>";
512   case ISD::POST_INC:   return "<post-inc>";
513   case ISD::POST_DEC:   return "<post-dec>";
514   }
515 }
516 
517 static Printable PrintNodeId(const SDNode &Node) {
518   return Printable([&Node](raw_ostream &OS) {
519 #ifndef NDEBUG
520     OS << 't' << Node.PersistentId;
521 #else
522     OS << (const void*)&Node;
523 #endif
524   });
525 }
526 
527 // Print the MMO with more information from the SelectionDAG.
528 static void printMemOperand(raw_ostream &OS, const MachineMemOperand &MMO,
529                             const MachineFunction *MF, const Module *M,
530                             const MachineFrameInfo *MFI,
531                             const TargetInstrInfo *TII, LLVMContext &Ctx) {
532   ModuleSlotTracker MST(M);
533   if (MF)
534     MST.incorporateFunction(MF->getFunction());
535   SmallVector<StringRef, 0> SSNs;
536   MMO.print(OS, MST, SSNs, Ctx, MFI, TII);
537 }
538 
539 static void printMemOperand(raw_ostream &OS, const MachineMemOperand &MMO,
540                             const SelectionDAG *G) {
541   if (G) {
542     const MachineFunction *MF = &G->getMachineFunction();
543     return printMemOperand(OS, MMO, MF, MF->getFunction().getParent(),
544                            &MF->getFrameInfo(),
545                            G->getSubtarget().getInstrInfo(), *G->getContext());
546   }
547 
548   LLVMContext Ctx;
549   return printMemOperand(OS, MMO, /*MF=*/nullptr, /*M=*/nullptr,
550                          /*MFI=*/nullptr, /*TII=*/nullptr, Ctx);
551 }
552 
553 #if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)
554 LLVM_DUMP_METHOD void SDNode::dump() const { dump(nullptr); }
555 
556 LLVM_DUMP_METHOD void SDNode::dump(const SelectionDAG *G) const {
557   print(dbgs(), G);
558   dbgs() << '\n';
559 }
560 #endif
561 
562 void SDNode::print_types(raw_ostream &OS, const SelectionDAG *G) const {
563   for (unsigned i = 0, e = getNumValues(); i != e; ++i) {
564     if (i) OS << ",";
565     if (getValueType(i) == MVT::Other)
566       OS << "ch";
567     else
568       OS << getValueType(i).getEVTString();
569   }
570 }
571 
572 void SDNode::print_details(raw_ostream &OS, const SelectionDAG *G) const {
573   if (getFlags().hasNoUnsignedWrap())
574     OS << " nuw";
575 
576   if (getFlags().hasNoSignedWrap())
577     OS << " nsw";
578 
579   if (getFlags().hasExact())
580     OS << " exact";
581 
582   if (getFlags().hasNoNaNs())
583     OS << " nnan";
584 
585   if (getFlags().hasNoInfs())
586     OS << " ninf";
587 
588   if (getFlags().hasNoSignedZeros())
589     OS << " nsz";
590 
591   if (getFlags().hasAllowReciprocal())
592     OS << " arcp";
593 
594   if (getFlags().hasAllowContract())
595     OS << " contract";
596 
597   if (getFlags().hasApproximateFuncs())
598     OS << " afn";
599 
600   if (getFlags().hasAllowReassociation())
601     OS << " reassoc";
602 
603   if (getFlags().hasNoFPExcept())
604     OS << " nofpexcept";
605 
606   if (const MachineSDNode *MN = dyn_cast<MachineSDNode>(this)) {
607     if (!MN->memoperands_empty()) {
608       OS << "<";
609       OS << "Mem:";
610       for (MachineSDNode::mmo_iterator i = MN->memoperands_begin(),
611            e = MN->memoperands_end(); i != e; ++i) {
612         printMemOperand(OS, **i, G);
613         if (std::next(i) != e)
614           OS << " ";
615       }
616       OS << ">";
617     }
618   } else if (const ShuffleVectorSDNode *SVN =
619                dyn_cast<ShuffleVectorSDNode>(this)) {
620     OS << "<";
621     for (unsigned i = 0, e = ValueList[0].getVectorNumElements(); i != e; ++i) {
622       int Idx = SVN->getMaskElt(i);
623       if (i) OS << ",";
624       if (Idx < 0)
625         OS << "u";
626       else
627         OS << Idx;
628     }
629     OS << ">";
630   } else if (const ConstantSDNode *CSDN = dyn_cast<ConstantSDNode>(this)) {
631     OS << '<' << CSDN->getAPIntValue() << '>';
632   } else if (const ConstantFPSDNode *CSDN = dyn_cast<ConstantFPSDNode>(this)) {
633     if (&CSDN->getValueAPF().getSemantics() == &APFloat::IEEEsingle())
634       OS << '<' << CSDN->getValueAPF().convertToFloat() << '>';
635     else if (&CSDN->getValueAPF().getSemantics() == &APFloat::IEEEdouble())
636       OS << '<' << CSDN->getValueAPF().convertToDouble() << '>';
637     else {
638       OS << "<APFloat(";
639       CSDN->getValueAPF().bitcastToAPInt().print(OS, false);
640       OS << ")>";
641     }
642   } else if (const GlobalAddressSDNode *GADN =
643              dyn_cast<GlobalAddressSDNode>(this)) {
644     int64_t offset = GADN->getOffset();
645     OS << '<';
646     GADN->getGlobal()->printAsOperand(OS);
647     OS << '>';
648     if (offset > 0)
649       OS << " + " << offset;
650     else
651       OS << " " << offset;
652     if (unsigned int TF = GADN->getTargetFlags())
653       OS << " [TF=" << TF << ']';
654   } else if (const FrameIndexSDNode *FIDN = dyn_cast<FrameIndexSDNode>(this)) {
655     OS << "<" << FIDN->getIndex() << ">";
656   } else if (const JumpTableSDNode *JTDN = dyn_cast<JumpTableSDNode>(this)) {
657     OS << "<" << JTDN->getIndex() << ">";
658     if (unsigned int TF = JTDN->getTargetFlags())
659       OS << " [TF=" << TF << ']';
660   } else if (const ConstantPoolSDNode *CP = dyn_cast<ConstantPoolSDNode>(this)){
661     int offset = CP->getOffset();
662     if (CP->isMachineConstantPoolEntry())
663       OS << "<" << *CP->getMachineCPVal() << ">";
664     else
665       OS << "<" << *CP->getConstVal() << ">";
666     if (offset > 0)
667       OS << " + " << offset;
668     else
669       OS << " " << offset;
670     if (unsigned int TF = CP->getTargetFlags())
671       OS << " [TF=" << TF << ']';
672   } else if (const TargetIndexSDNode *TI = dyn_cast<TargetIndexSDNode>(this)) {
673     OS << "<" << TI->getIndex() << '+' << TI->getOffset() << ">";
674     if (unsigned TF = TI->getTargetFlags())
675       OS << " [TF=" << TF << ']';
676   } else if (const BasicBlockSDNode *BBDN = dyn_cast<BasicBlockSDNode>(this)) {
677     OS << "<";
678     const Value *LBB = (const Value*)BBDN->getBasicBlock()->getBasicBlock();
679     if (LBB)
680       OS << LBB->getName() << " ";
681     OS << (const void*)BBDN->getBasicBlock() << ">";
682   } else if (const RegisterSDNode *R = dyn_cast<RegisterSDNode>(this)) {
683     OS << ' ' << printReg(R->getReg(),
684                           G ? G->getSubtarget().getRegisterInfo() : nullptr);
685   } else if (const ExternalSymbolSDNode *ES =
686              dyn_cast<ExternalSymbolSDNode>(this)) {
687     OS << "'" << ES->getSymbol() << "'";
688     if (unsigned int TF = ES->getTargetFlags())
689       OS << " [TF=" << TF << ']';
690   } else if (const SrcValueSDNode *M = dyn_cast<SrcValueSDNode>(this)) {
691     if (M->getValue())
692       OS << "<" << M->getValue() << ">";
693     else
694       OS << "<null>";
695   } else if (const MDNodeSDNode *MD = dyn_cast<MDNodeSDNode>(this)) {
696     if (MD->getMD())
697       OS << "<" << MD->getMD() << ">";
698     else
699       OS << "<null>";
700   } else if (const VTSDNode *N = dyn_cast<VTSDNode>(this)) {
701     OS << ":" << N->getVT().getEVTString();
702   }
703   else if (const LoadSDNode *LD = dyn_cast<LoadSDNode>(this)) {
704     OS << "<";
705 
706     printMemOperand(OS, *LD->getMemOperand(), G);
707 
708     bool doExt = true;
709     switch (LD->getExtensionType()) {
710     default: doExt = false; break;
711     case ISD::EXTLOAD:  OS << ", anyext"; break;
712     case ISD::SEXTLOAD: OS << ", sext"; break;
713     case ISD::ZEXTLOAD: OS << ", zext"; break;
714     }
715     if (doExt)
716       OS << " from " << LD->getMemoryVT().getEVTString();
717 
718     const char *AM = getIndexedModeName(LD->getAddressingMode());
719     if (*AM)
720       OS << ", " << AM;
721 
722     OS << ">";
723   } else if (const StoreSDNode *ST = dyn_cast<StoreSDNode>(this)) {
724     OS << "<";
725     printMemOperand(OS, *ST->getMemOperand(), G);
726 
727     if (ST->isTruncatingStore())
728       OS << ", trunc to " << ST->getMemoryVT().getEVTString();
729 
730     const char *AM = getIndexedModeName(ST->getAddressingMode());
731     if (*AM)
732       OS << ", " << AM;
733 
734     OS << ">";
735   } else if (const MaskedLoadSDNode *MLd = dyn_cast<MaskedLoadSDNode>(this)) {
736     OS << "<";
737 
738     printMemOperand(OS, *MLd->getMemOperand(), G);
739 
740     bool doExt = true;
741     switch (MLd->getExtensionType()) {
742     default: doExt = false; break;
743     case ISD::EXTLOAD:  OS << ", anyext"; break;
744     case ISD::SEXTLOAD: OS << ", sext"; break;
745     case ISD::ZEXTLOAD: OS << ", zext"; break;
746     }
747     if (doExt)
748       OS << " from " << MLd->getMemoryVT().getEVTString();
749 
750     const char *AM = getIndexedModeName(MLd->getAddressingMode());
751     if (*AM)
752       OS << ", " << AM;
753 
754     if (MLd->isExpandingLoad())
755       OS << ", expanding";
756 
757     OS << ">";
758   } else if (const MaskedStoreSDNode *MSt = dyn_cast<MaskedStoreSDNode>(this)) {
759     OS << "<";
760     printMemOperand(OS, *MSt->getMemOperand(), G);
761 
762     if (MSt->isTruncatingStore())
763       OS << ", trunc to " << MSt->getMemoryVT().getEVTString();
764 
765     const char *AM = getIndexedModeName(MSt->getAddressingMode());
766     if (*AM)
767       OS << ", " << AM;
768 
769     if (MSt->isCompressingStore())
770       OS << ", compressing";
771 
772     OS << ">";
773   } else if (const auto *MGather = dyn_cast<MaskedGatherSDNode>(this)) {
774     OS << "<";
775     printMemOperand(OS, *MGather->getMemOperand(), G);
776 
777     bool doExt = true;
778     switch (MGather->getExtensionType()) {
779     default: doExt = false; break;
780     case ISD::EXTLOAD:  OS << ", anyext"; break;
781     case ISD::SEXTLOAD: OS << ", sext"; break;
782     case ISD::ZEXTLOAD: OS << ", zext"; break;
783     }
784     if (doExt)
785       OS << " from " << MGather->getMemoryVT().getEVTString();
786 
787     auto Signed = MGather->isIndexSigned() ? "signed" : "unsigned";
788     auto Scaled = MGather->isIndexScaled() ? "scaled" : "unscaled";
789     OS << ", " << Signed << " " << Scaled << " offset";
790 
791     OS << ">";
792   } else if (const auto *MScatter = dyn_cast<MaskedScatterSDNode>(this)) {
793     OS << "<";
794     printMemOperand(OS, *MScatter->getMemOperand(), G);
795 
796     if (MScatter->isTruncatingStore())
797       OS << ", trunc to " << MScatter->getMemoryVT().getEVTString();
798 
799     auto Signed = MScatter->isIndexSigned() ? "signed" : "unsigned";
800     auto Scaled = MScatter->isIndexScaled() ? "scaled" : "unscaled";
801     OS << ", " << Signed << " " << Scaled << " offset";
802 
803     OS << ">";
804   } else if (const MemSDNode *M = dyn_cast<MemSDNode>(this)) {
805     OS << "<";
806     printMemOperand(OS, *M->getMemOperand(), G);
807     OS << ">";
808   } else if (const BlockAddressSDNode *BA =
809                dyn_cast<BlockAddressSDNode>(this)) {
810     int64_t offset = BA->getOffset();
811     OS << "<";
812     BA->getBlockAddress()->getFunction()->printAsOperand(OS, false);
813     OS << ", ";
814     BA->getBlockAddress()->getBasicBlock()->printAsOperand(OS, false);
815     OS << ">";
816     if (offset > 0)
817       OS << " + " << offset;
818     else
819       OS << " " << offset;
820     if (unsigned int TF = BA->getTargetFlags())
821       OS << " [TF=" << TF << ']';
822   } else if (const AddrSpaceCastSDNode *ASC =
823                dyn_cast<AddrSpaceCastSDNode>(this)) {
824     OS << '['
825        << ASC->getSrcAddressSpace()
826        << " -> "
827        << ASC->getDestAddressSpace()
828        << ']';
829   } else if (const LifetimeSDNode *LN = dyn_cast<LifetimeSDNode>(this)) {
830     if (LN->hasOffset())
831       OS << "<" << LN->getOffset() << " to " << LN->getOffset() + LN->getSize() << ">";
832   } else if (const auto *AA = dyn_cast<AssertAlignSDNode>(this)) {
833     OS << '<' << AA->getAlign().value() << '>';
834   }
835 
836   if (VerboseDAGDumping) {
837     if (unsigned Order = getIROrder())
838         OS << " [ORD=" << Order << ']';
839 
840     if (getNodeId() != -1)
841       OS << " [ID=" << getNodeId() << ']';
842     if (!(isa<ConstantSDNode>(this) || (isa<ConstantFPSDNode>(this))))
843       OS << " # D:" << isDivergent();
844 
845     if (G && !G->GetDbgValues(this).empty()) {
846       OS << " [NoOfDbgValues=" << G->GetDbgValues(this).size() << ']';
847       for (SDDbgValue *Dbg : G->GetDbgValues(this))
848         if (!Dbg->isInvalidated())
849           Dbg->print(OS);
850     } else if (getHasDebugValue())
851       OS << " [NoOfDbgValues>0]";
852   }
853 }
854 
855 LLVM_DUMP_METHOD void SDDbgValue::print(raw_ostream &OS) const {
856   OS << " DbgVal(Order=" << getOrder() << ')';
857   if (isInvalidated())
858     OS << "(Invalidated)";
859   if (isEmitted())
860     OS << "(Emitted)";
861   OS << "(";
862   bool Comma = false;
863   for (const SDDbgOperand &Op : getLocationOps()) {
864     if (Comma)
865       OS << ", ";
866     switch (Op.getKind()) {
867     case SDDbgOperand::SDNODE:
868       if (Op.getSDNode())
869         OS << "SDNODE=" << PrintNodeId(*Op.getSDNode()) << ':' << Op.getResNo();
870       else
871         OS << "SDNODE";
872       break;
873     case SDDbgOperand::CONST:
874       OS << "CONST";
875       break;
876     case SDDbgOperand::FRAMEIX:
877       OS << "FRAMEIX=" << Op.getFrameIx();
878       break;
879     case SDDbgOperand::VREG:
880       OS << "VREG=" << Op.getVReg();
881       break;
882     }
883     Comma = true;
884   }
885   OS << ")";
886   if (isIndirect()) OS << "(Indirect)";
887   if (isVariadic())
888     OS << "(Variadic)";
889   OS << ":\"" << Var->getName() << '"';
890 #ifndef NDEBUG
891   if (Expr->getNumElements())
892     Expr->dump();
893 #endif
894 }
895 
896 #if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)
897 LLVM_DUMP_METHOD void SDDbgValue::dump() const {
898   if (isInvalidated())
899     return;
900   print(dbgs());
901   dbgs() << "\n";
902 }
903 #endif
904 
905 /// Return true if this node is so simple that we should just print it inline
906 /// if it appears as an operand.
907 static bool shouldPrintInline(const SDNode &Node, const SelectionDAG *G) {
908   // Avoid lots of cluttering when inline printing nodes with associated
909   // DbgValues in verbose mode.
910   if (VerboseDAGDumping && G && !G->GetDbgValues(&Node).empty())
911     return false;
912   if (Node.getOpcode() == ISD::EntryToken)
913     return false;
914   return Node.getNumOperands() == 0;
915 }
916 
917 #if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)
918 static void DumpNodes(const SDNode *N, unsigned indent, const SelectionDAG *G) {
919   for (const SDValue &Op : N->op_values()) {
920     if (shouldPrintInline(*Op.getNode(), G))
921       continue;
922     if (Op.getNode()->hasOneUse())
923       DumpNodes(Op.getNode(), indent+2, G);
924   }
925 
926   dbgs().indent(indent);
927   N->dump(G);
928 }
929 
930 LLVM_DUMP_METHOD void SelectionDAG::dump() const {
931   dbgs() << "SelectionDAG has " << AllNodes.size() << " nodes:\n";
932 
933   for (const SDNode &N : allnodes()) {
934     if (!N.hasOneUse() && &N != getRoot().getNode() &&
935         (!shouldPrintInline(N, this) || N.use_empty()))
936       DumpNodes(&N, 2, this);
937   }
938 
939   if (getRoot().getNode()) DumpNodes(getRoot().getNode(), 2, this);
940   dbgs() << "\n";
941 
942   if (VerboseDAGDumping) {
943     if (DbgBegin() != DbgEnd())
944       dbgs() << "SDDbgValues:\n";
945     for (auto *Dbg : make_range(DbgBegin(), DbgEnd()))
946       Dbg->dump();
947     if (ByvalParmDbgBegin() != ByvalParmDbgEnd())
948       dbgs() << "Byval SDDbgValues:\n";
949     for (auto *Dbg : make_range(ByvalParmDbgBegin(), ByvalParmDbgEnd()))
950       Dbg->dump();
951   }
952   dbgs() << "\n";
953 }
954 #endif
955 
956 void SDNode::printr(raw_ostream &OS, const SelectionDAG *G) const {
957   OS << PrintNodeId(*this) << ": ";
958   print_types(OS, G);
959   OS << " = " << getOperationName(G);
960   print_details(OS, G);
961 }
962 
963 static bool printOperand(raw_ostream &OS, const SelectionDAG *G,
964                          const SDValue Value) {
965   if (!Value.getNode()) {
966     OS << "<null>";
967     return false;
968   }
969 
970   if (shouldPrintInline(*Value.getNode(), G)) {
971     OS << Value->getOperationName(G) << ':';
972     Value->print_types(OS, G);
973     Value->print_details(OS, G);
974     return true;
975   }
976 
977   OS << PrintNodeId(*Value.getNode());
978   if (unsigned RN = Value.getResNo())
979     OS << ':' << RN;
980   return false;
981 }
982 
983 #if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)
984 using VisitedSDNodeSet = SmallPtrSet<const SDNode *, 32>;
985 
986 static void DumpNodesr(raw_ostream &OS, const SDNode *N, unsigned indent,
987                        const SelectionDAG *G, VisitedSDNodeSet &once) {
988   if (!once.insert(N).second) // If we've been here before, return now.
989     return;
990 
991   // Dump the current SDNode, but don't end the line yet.
992   OS.indent(indent);
993   N->printr(OS, G);
994 
995   // Having printed this SDNode, walk the children:
996   for (unsigned i = 0, e = N->getNumOperands(); i != e; ++i) {
997     if (i) OS << ",";
998     OS << " ";
999 
1000     const SDValue Op = N->getOperand(i);
1001     bool printedInline = printOperand(OS, G, Op);
1002     if (printedInline)
1003       once.insert(Op.getNode());
1004   }
1005 
1006   OS << "\n";
1007 
1008   // Dump children that have grandchildren on their own line(s).
1009   for (const SDValue &Op : N->op_values())
1010     DumpNodesr(OS, Op.getNode(), indent+2, G, once);
1011 }
1012 
1013 LLVM_DUMP_METHOD void SDNode::dumpr() const {
1014   VisitedSDNodeSet once;
1015   DumpNodesr(dbgs(), this, 0, nullptr, once);
1016 }
1017 
1018 LLVM_DUMP_METHOD void SDNode::dumpr(const SelectionDAG *G) const {
1019   VisitedSDNodeSet once;
1020   DumpNodesr(dbgs(), this, 0, G, once);
1021 }
1022 #endif
1023 
1024 static void printrWithDepthHelper(raw_ostream &OS, const SDNode *N,
1025                                   const SelectionDAG *G, unsigned depth,
1026                                   unsigned indent) {
1027   if (depth == 0)
1028     return;
1029 
1030   OS.indent(indent);
1031 
1032   N->print(OS, G);
1033 
1034   for (const SDValue &Op : N->op_values()) {
1035     // Don't follow chain operands.
1036     if (Op.getValueType() == MVT::Other)
1037       continue;
1038     OS << '\n';
1039     printrWithDepthHelper(OS, Op.getNode(), G, depth - 1, indent + 2);
1040   }
1041 }
1042 
1043 void SDNode::printrWithDepth(raw_ostream &OS, const SelectionDAG *G,
1044                             unsigned depth) const {
1045   printrWithDepthHelper(OS, this, G, depth, 0);
1046 }
1047 
1048 void SDNode::printrFull(raw_ostream &OS, const SelectionDAG *G) const {
1049   // Don't print impossibly deep things.
1050   printrWithDepth(OS, G, 10);
1051 }
1052 
1053 #if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)
1054 LLVM_DUMP_METHOD
1055 void SDNode::dumprWithDepth(const SelectionDAG *G, unsigned depth) const {
1056   printrWithDepth(dbgs(), G, depth);
1057 }
1058 
1059 LLVM_DUMP_METHOD void SDNode::dumprFull(const SelectionDAG *G) const {
1060   // Don't print impossibly deep things.
1061   dumprWithDepth(G, 10);
1062 }
1063 #endif
1064 
1065 void SDNode::print(raw_ostream &OS, const SelectionDAG *G) const {
1066   printr(OS, G);
1067   // Under VerboseDAGDumping divergence will be printed always.
1068   if (isDivergent() && !VerboseDAGDumping)
1069     OS << " # D:1";
1070   for (unsigned i = 0, e = getNumOperands(); i != e; ++i) {
1071     if (i) OS << ", "; else OS << " ";
1072     printOperand(OS, G, getOperand(i));
1073   }
1074   if (DebugLoc DL = getDebugLoc()) {
1075     OS << ", ";
1076     DL.print(OS);
1077   }
1078 }
1079