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/MachineValueType.h"
23 #include "llvm/CodeGen/SelectionDAG.h"
24 #include "llvm/CodeGen/SelectionDAGNodes.h"
25 #include "llvm/CodeGen/TargetInstrInfo.h"
26 #include "llvm/CodeGen/TargetLowering.h"
27 #include "llvm/CodeGen/TargetRegisterInfo.h"
28 #include "llvm/CodeGen/TargetSubtargetInfo.h"
29 #include "llvm/CodeGen/ValueTypes.h"
30 #include "llvm/Config/llvm-config.h"
31 #include "llvm/IR/BasicBlock.h"
32 #include "llvm/IR/Constants.h"
33 #include "llvm/IR/DebugInfoMetadata.h"
34 #include "llvm/IR/DebugLoc.h"
35 #include "llvm/IR/Function.h"
36 #include "llvm/IR/Intrinsics.h"
37 #include "llvm/IR/ModuleSlotTracker.h"
38 #include "llvm/IR/Value.h"
39 #include "llvm/Support/Casting.h"
40 #include "llvm/Support/CommandLine.h"
41 #include "llvm/Support/Compiler.h"
42 #include "llvm/Support/Debug.h"
43 #include "llvm/Support/ErrorHandling.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::FLDEXP:                     return "fldexp";
287   case ISD::STRICT_FLDEXP:              return "strict_fldexp";
288   case ISD::FFREXP:                     return "ffrexp";
289   case ISD::FPOWI:                      return "fpowi";
290   case ISD::STRICT_FPOWI:               return "strict_fpowi";
291   case ISD::SETCC:                      return "setcc";
292   case ISD::SETCCCARRY:                 return "setcccarry";
293   case ISD::STRICT_FSETCC:              return "strict_fsetcc";
294   case ISD::STRICT_FSETCCS:             return "strict_fsetccs";
295   case ISD::SELECT:                     return "select";
296   case ISD::VSELECT:                    return "vselect";
297   case ISD::SELECT_CC:                  return "select_cc";
298   case ISD::INSERT_VECTOR_ELT:          return "insert_vector_elt";
299   case ISD::EXTRACT_VECTOR_ELT:         return "extract_vector_elt";
300   case ISD::CONCAT_VECTORS:             return "concat_vectors";
301   case ISD::INSERT_SUBVECTOR:           return "insert_subvector";
302   case ISD::EXTRACT_SUBVECTOR:          return "extract_subvector";
303   case ISD::VECTOR_DEINTERLEAVE:        return "vector_deinterleave";
304   case ISD::VECTOR_INTERLEAVE:          return "vector_interleave";
305   case ISD::SCALAR_TO_VECTOR:           return "scalar_to_vector";
306   case ISD::VECTOR_SHUFFLE:             return "vector_shuffle";
307   case ISD::VECTOR_SPLICE:              return "vector_splice";
308   case ISD::SPLAT_VECTOR:               return "splat_vector";
309   case ISD::SPLAT_VECTOR_PARTS:         return "splat_vector_parts";
310   case ISD::VECTOR_REVERSE:             return "vector_reverse";
311   case ISD::STEP_VECTOR:                return "step_vector";
312   case ISD::CARRY_FALSE:                return "carry_false";
313   case ISD::ADDC:                       return "addc";
314   case ISD::ADDE:                       return "adde";
315   case ISD::UADDO_CARRY:                return "uaddo_carry";
316   case ISD::SADDO_CARRY:                return "saddo_carry";
317   case ISD::SADDO:                      return "saddo";
318   case ISD::UADDO:                      return "uaddo";
319   case ISD::SSUBO:                      return "ssubo";
320   case ISD::USUBO:                      return "usubo";
321   case ISD::SMULO:                      return "smulo";
322   case ISD::UMULO:                      return "umulo";
323   case ISD::SUBC:                       return "subc";
324   case ISD::SUBE:                       return "sube";
325   case ISD::USUBO_CARRY:                return "usubo_carry";
326   case ISD::SSUBO_CARRY:                return "ssubo_carry";
327   case ISD::SHL_PARTS:                  return "shl_parts";
328   case ISD::SRA_PARTS:                  return "sra_parts";
329   case ISD::SRL_PARTS:                  return "srl_parts";
330 
331   case ISD::SADDSAT:                    return "saddsat";
332   case ISD::UADDSAT:                    return "uaddsat";
333   case ISD::SSUBSAT:                    return "ssubsat";
334   case ISD::USUBSAT:                    return "usubsat";
335   case ISD::SSHLSAT:                    return "sshlsat";
336   case ISD::USHLSAT:                    return "ushlsat";
337 
338   case ISD::SMULFIX:                    return "smulfix";
339   case ISD::SMULFIXSAT:                 return "smulfixsat";
340   case ISD::UMULFIX:                    return "umulfix";
341   case ISD::UMULFIXSAT:                 return "umulfixsat";
342 
343   case ISD::SDIVFIX:                    return "sdivfix";
344   case ISD::SDIVFIXSAT:                 return "sdivfixsat";
345   case ISD::UDIVFIX:                    return "udivfix";
346   case ISD::UDIVFIXSAT:                 return "udivfixsat";
347 
348   // Conversion operators.
349   case ISD::SIGN_EXTEND:                return "sign_extend";
350   case ISD::ZERO_EXTEND:                return "zero_extend";
351   case ISD::ANY_EXTEND:                 return "any_extend";
352   case ISD::SIGN_EXTEND_INREG:          return "sign_extend_inreg";
353   case ISD::ANY_EXTEND_VECTOR_INREG:    return "any_extend_vector_inreg";
354   case ISD::SIGN_EXTEND_VECTOR_INREG:   return "sign_extend_vector_inreg";
355   case ISD::ZERO_EXTEND_VECTOR_INREG:   return "zero_extend_vector_inreg";
356   case ISD::TRUNCATE:                   return "truncate";
357   case ISD::FP_ROUND:                   return "fp_round";
358   case ISD::STRICT_FP_ROUND:            return "strict_fp_round";
359   case ISD::FP_EXTEND:                  return "fp_extend";
360   case ISD::STRICT_FP_EXTEND:           return "strict_fp_extend";
361 
362   case ISD::SINT_TO_FP:                 return "sint_to_fp";
363   case ISD::STRICT_SINT_TO_FP:          return "strict_sint_to_fp";
364   case ISD::UINT_TO_FP:                 return "uint_to_fp";
365   case ISD::STRICT_UINT_TO_FP:          return "strict_uint_to_fp";
366   case ISD::FP_TO_SINT:                 return "fp_to_sint";
367   case ISD::STRICT_FP_TO_SINT:          return "strict_fp_to_sint";
368   case ISD::FP_TO_UINT:                 return "fp_to_uint";
369   case ISD::STRICT_FP_TO_UINT:          return "strict_fp_to_uint";
370   case ISD::FP_TO_SINT_SAT:             return "fp_to_sint_sat";
371   case ISD::FP_TO_UINT_SAT:             return "fp_to_uint_sat";
372   case ISD::BITCAST:                    return "bitcast";
373   case ISD::ADDRSPACECAST:              return "addrspacecast";
374   case ISD::FP16_TO_FP:                 return "fp16_to_fp";
375   case ISD::STRICT_FP16_TO_FP:          return "strict_fp16_to_fp";
376   case ISD::FP_TO_FP16:                 return "fp_to_fp16";
377   case ISD::STRICT_FP_TO_FP16:          return "strict_fp_to_fp16";
378   case ISD::BF16_TO_FP:                 return "bf16_to_fp";
379   case ISD::FP_TO_BF16:                 return "fp_to_bf16";
380   case ISD::LROUND:                     return "lround";
381   case ISD::STRICT_LROUND:              return "strict_lround";
382   case ISD::LLROUND:                    return "llround";
383   case ISD::STRICT_LLROUND:             return "strict_llround";
384   case ISD::LRINT:                      return "lrint";
385   case ISD::STRICT_LRINT:               return "strict_lrint";
386   case ISD::LLRINT:                     return "llrint";
387   case ISD::STRICT_LLRINT:              return "strict_llrint";
388 
389     // Control flow instructions
390   case ISD::BR:                         return "br";
391   case ISD::BRIND:                      return "brind";
392   case ISD::BR_JT:                      return "br_jt";
393   case ISD::BRCOND:                     return "brcond";
394   case ISD::BR_CC:                      return "br_cc";
395   case ISD::CALLSEQ_START:              return "callseq_start";
396   case ISD::CALLSEQ_END:                return "callseq_end";
397 
398     // EH instructions
399   case ISD::CATCHRET:                   return "catchret";
400   case ISD::CLEANUPRET:                 return "cleanupret";
401 
402     // Other operators
403   case ISD::LOAD:                       return "load";
404   case ISD::STORE:                      return "store";
405   case ISD::MLOAD:                      return "masked_load";
406   case ISD::MSTORE:                     return "masked_store";
407   case ISD::MGATHER:                    return "masked_gather";
408   case ISD::MSCATTER:                   return "masked_scatter";
409   case ISD::VAARG:                      return "vaarg";
410   case ISD::VACOPY:                     return "vacopy";
411   case ISD::VAEND:                      return "vaend";
412   case ISD::VASTART:                    return "vastart";
413   case ISD::DYNAMIC_STACKALLOC:         return "dynamic_stackalloc";
414   case ISD::EXTRACT_ELEMENT:            return "extract_element";
415   case ISD::BUILD_PAIR:                 return "build_pair";
416   case ISD::STACKSAVE:                  return "stacksave";
417   case ISD::STACKRESTORE:               return "stackrestore";
418   case ISD::TRAP:                       return "trap";
419   case ISD::DEBUGTRAP:                  return "debugtrap";
420   case ISD::UBSANTRAP:                  return "ubsantrap";
421   case ISD::LIFETIME_START:             return "lifetime.start";
422   case ISD::LIFETIME_END:               return "lifetime.end";
423   case ISD::PSEUDO_PROBE:
424     return "pseudoprobe";
425   case ISD::GC_TRANSITION_START:        return "gc_transition.start";
426   case ISD::GC_TRANSITION_END:          return "gc_transition.end";
427   case ISD::GET_DYNAMIC_AREA_OFFSET:    return "get.dynamic.area.offset";
428   case ISD::FREEZE:                     return "freeze";
429   case ISD::PREALLOCATED_SETUP:
430     return "call_setup";
431   case ISD::PREALLOCATED_ARG:
432     return "call_alloc";
433 
434   // Floating point environment manipulation
435   case ISD::GET_ROUNDING:               return "get_rounding";
436   case ISD::SET_ROUNDING:               return "set_rounding";
437   case ISD::GET_FPENV:                  return "get_fpenv";
438   case ISD::SET_FPENV:                  return "set_fpenv";
439   case ISD::RESET_FPENV:                return "reset_fpenv";
440   case ISD::GET_FPENV_MEM:              return "get_fpenv_mem";
441   case ISD::SET_FPENV_MEM:              return "set_fpenv_mem";
442 
443   // Bit manipulation
444   case ISD::ABS:                        return "abs";
445   case ISD::BITREVERSE:                 return "bitreverse";
446   case ISD::BSWAP:                      return "bswap";
447   case ISD::CTPOP:                      return "ctpop";
448   case ISD::CTTZ:                       return "cttz";
449   case ISD::CTTZ_ZERO_UNDEF:            return "cttz_zero_undef";
450   case ISD::CTLZ:                       return "ctlz";
451   case ISD::CTLZ_ZERO_UNDEF:            return "ctlz_zero_undef";
452   case ISD::PARITY:                     return "parity";
453 
454   // Trampolines
455   case ISD::INIT_TRAMPOLINE:            return "init_trampoline";
456   case ISD::ADJUST_TRAMPOLINE:          return "adjust_trampoline";
457 
458   case ISD::CONDCODE:
459     switch (cast<CondCodeSDNode>(this)->get()) {
460     default: llvm_unreachable("Unknown setcc condition!");
461     case ISD::SETOEQ:                   return "setoeq";
462     case ISD::SETOGT:                   return "setogt";
463     case ISD::SETOGE:                   return "setoge";
464     case ISD::SETOLT:                   return "setolt";
465     case ISD::SETOLE:                   return "setole";
466     case ISD::SETONE:                   return "setone";
467 
468     case ISD::SETO:                     return "seto";
469     case ISD::SETUO:                    return "setuo";
470     case ISD::SETUEQ:                   return "setueq";
471     case ISD::SETUGT:                   return "setugt";
472     case ISD::SETUGE:                   return "setuge";
473     case ISD::SETULT:                   return "setult";
474     case ISD::SETULE:                   return "setule";
475     case ISD::SETUNE:                   return "setune";
476 
477     case ISD::SETEQ:                    return "seteq";
478     case ISD::SETGT:                    return "setgt";
479     case ISD::SETGE:                    return "setge";
480     case ISD::SETLT:                    return "setlt";
481     case ISD::SETLE:                    return "setle";
482     case ISD::SETNE:                    return "setne";
483 
484     case ISD::SETTRUE:                  return "settrue";
485     case ISD::SETTRUE2:                 return "settrue2";
486     case ISD::SETFALSE:                 return "setfalse";
487     case ISD::SETFALSE2:                return "setfalse2";
488     }
489   case ISD::VECREDUCE_FADD:             return "vecreduce_fadd";
490   case ISD::VECREDUCE_SEQ_FADD:         return "vecreduce_seq_fadd";
491   case ISD::VECREDUCE_FMUL:             return "vecreduce_fmul";
492   case ISD::VECREDUCE_SEQ_FMUL:         return "vecreduce_seq_fmul";
493   case ISD::VECREDUCE_ADD:              return "vecreduce_add";
494   case ISD::VECREDUCE_MUL:              return "vecreduce_mul";
495   case ISD::VECREDUCE_AND:              return "vecreduce_and";
496   case ISD::VECREDUCE_OR:               return "vecreduce_or";
497   case ISD::VECREDUCE_XOR:              return "vecreduce_xor";
498   case ISD::VECREDUCE_SMAX:             return "vecreduce_smax";
499   case ISD::VECREDUCE_SMIN:             return "vecreduce_smin";
500   case ISD::VECREDUCE_UMAX:             return "vecreduce_umax";
501   case ISD::VECREDUCE_UMIN:             return "vecreduce_umin";
502   case ISD::VECREDUCE_FMAX:             return "vecreduce_fmax";
503   case ISD::VECREDUCE_FMIN:             return "vecreduce_fmin";
504   case ISD::VECREDUCE_FMAXIMUM:         return "vecreduce_fmaximum";
505   case ISD::VECREDUCE_FMINIMUM:         return "vecreduce_fminimum";
506   case ISD::STACKMAP:
507     return "stackmap";
508   case ISD::PATCHPOINT:
509     return "patchpoint";
510 
511     // Vector Predication
512 #define BEGIN_REGISTER_VP_SDNODE(SDID, LEGALARG, NAME, ...)                    \
513   case ISD::SDID:                                                              \
514     return #NAME;
515 #include "llvm/IR/VPIntrinsics.def"
516   }
517 }
518 
519 const char *SDNode::getIndexedModeName(ISD::MemIndexedMode AM) {
520   switch (AM) {
521   default:              return "";
522   case ISD::PRE_INC:    return "<pre-inc>";
523   case ISD::PRE_DEC:    return "<pre-dec>";
524   case ISD::POST_INC:   return "<post-inc>";
525   case ISD::POST_DEC:   return "<post-dec>";
526   }
527 }
528 
529 static Printable PrintNodeId(const SDNode &Node) {
530   return Printable([&Node](raw_ostream &OS) {
531 #ifndef NDEBUG
532     OS << 't' << Node.PersistentId;
533 #else
534     OS << (const void*)&Node;
535 #endif
536   });
537 }
538 
539 // Print the MMO with more information from the SelectionDAG.
540 static void printMemOperand(raw_ostream &OS, const MachineMemOperand &MMO,
541                             const MachineFunction *MF, const Module *M,
542                             const MachineFrameInfo *MFI,
543                             const TargetInstrInfo *TII, LLVMContext &Ctx) {
544   ModuleSlotTracker MST(M);
545   if (MF)
546     MST.incorporateFunction(MF->getFunction());
547   SmallVector<StringRef, 0> SSNs;
548   MMO.print(OS, MST, SSNs, Ctx, MFI, TII);
549 }
550 
551 static void printMemOperand(raw_ostream &OS, const MachineMemOperand &MMO,
552                             const SelectionDAG *G) {
553   if (G) {
554     const MachineFunction *MF = &G->getMachineFunction();
555     return printMemOperand(OS, MMO, MF, MF->getFunction().getParent(),
556                            &MF->getFrameInfo(),
557                            G->getSubtarget().getInstrInfo(), *G->getContext());
558   }
559 
560   LLVMContext Ctx;
561   return printMemOperand(OS, MMO, /*MF=*/nullptr, /*M=*/nullptr,
562                          /*MFI=*/nullptr, /*TII=*/nullptr, Ctx);
563 }
564 
565 #if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)
566 LLVM_DUMP_METHOD void SDNode::dump() const { dump(nullptr); }
567 
568 LLVM_DUMP_METHOD void SDNode::dump(const SelectionDAG *G) const {
569   print(dbgs(), G);
570   dbgs() << '\n';
571 }
572 #endif
573 
574 void SDNode::print_types(raw_ostream &OS, const SelectionDAG *G) const {
575   for (unsigned i = 0, e = getNumValues(); i != e; ++i) {
576     if (i) OS << ",";
577     if (getValueType(i) == MVT::Other)
578       OS << "ch";
579     else
580       OS << getValueType(i).getEVTString();
581   }
582 }
583 
584 void SDNode::print_details(raw_ostream &OS, const SelectionDAG *G) const {
585   if (getFlags().hasNoUnsignedWrap())
586     OS << " nuw";
587 
588   if (getFlags().hasNoSignedWrap())
589     OS << " nsw";
590 
591   if (getFlags().hasExact())
592     OS << " exact";
593 
594   if (getFlags().hasNoNaNs())
595     OS << " nnan";
596 
597   if (getFlags().hasNoInfs())
598     OS << " ninf";
599 
600   if (getFlags().hasNoSignedZeros())
601     OS << " nsz";
602 
603   if (getFlags().hasAllowReciprocal())
604     OS << " arcp";
605 
606   if (getFlags().hasAllowContract())
607     OS << " contract";
608 
609   if (getFlags().hasApproximateFuncs())
610     OS << " afn";
611 
612   if (getFlags().hasAllowReassociation())
613     OS << " reassoc";
614 
615   if (getFlags().hasNoFPExcept())
616     OS << " nofpexcept";
617 
618   if (const MachineSDNode *MN = dyn_cast<MachineSDNode>(this)) {
619     if (!MN->memoperands_empty()) {
620       OS << "<";
621       OS << "Mem:";
622       for (MachineSDNode::mmo_iterator i = MN->memoperands_begin(),
623            e = MN->memoperands_end(); i != e; ++i) {
624         printMemOperand(OS, **i, G);
625         if (std::next(i) != e)
626           OS << " ";
627       }
628       OS << ">";
629     }
630   } else if (const ShuffleVectorSDNode *SVN =
631                dyn_cast<ShuffleVectorSDNode>(this)) {
632     OS << "<";
633     for (unsigned i = 0, e = ValueList[0].getVectorNumElements(); i != e; ++i) {
634       int Idx = SVN->getMaskElt(i);
635       if (i) OS << ",";
636       if (Idx < 0)
637         OS << "u";
638       else
639         OS << Idx;
640     }
641     OS << ">";
642   } else if (const ConstantSDNode *CSDN = dyn_cast<ConstantSDNode>(this)) {
643     OS << '<' << CSDN->getAPIntValue() << '>';
644   } else if (const ConstantFPSDNode *CSDN = dyn_cast<ConstantFPSDNode>(this)) {
645     if (&CSDN->getValueAPF().getSemantics() == &APFloat::IEEEsingle())
646       OS << '<' << CSDN->getValueAPF().convertToFloat() << '>';
647     else if (&CSDN->getValueAPF().getSemantics() == &APFloat::IEEEdouble())
648       OS << '<' << CSDN->getValueAPF().convertToDouble() << '>';
649     else {
650       OS << "<APFloat(";
651       CSDN->getValueAPF().bitcastToAPInt().print(OS, false);
652       OS << ")>";
653     }
654   } else if (const GlobalAddressSDNode *GADN =
655              dyn_cast<GlobalAddressSDNode>(this)) {
656     int64_t offset = GADN->getOffset();
657     OS << '<';
658     GADN->getGlobal()->printAsOperand(OS);
659     OS << '>';
660     if (offset > 0)
661       OS << " + " << offset;
662     else
663       OS << " " << offset;
664     if (unsigned int TF = GADN->getTargetFlags())
665       OS << " [TF=" << TF << ']';
666   } else if (const FrameIndexSDNode *FIDN = dyn_cast<FrameIndexSDNode>(this)) {
667     OS << "<" << FIDN->getIndex() << ">";
668   } else if (const JumpTableSDNode *JTDN = dyn_cast<JumpTableSDNode>(this)) {
669     OS << "<" << JTDN->getIndex() << ">";
670     if (unsigned int TF = JTDN->getTargetFlags())
671       OS << " [TF=" << TF << ']';
672   } else if (const ConstantPoolSDNode *CP = dyn_cast<ConstantPoolSDNode>(this)){
673     int offset = CP->getOffset();
674     if (CP->isMachineConstantPoolEntry())
675       OS << "<" << *CP->getMachineCPVal() << ">";
676     else
677       OS << "<" << *CP->getConstVal() << ">";
678     if (offset > 0)
679       OS << " + " << offset;
680     else
681       OS << " " << offset;
682     if (unsigned int TF = CP->getTargetFlags())
683       OS << " [TF=" << TF << ']';
684   } else if (const TargetIndexSDNode *TI = dyn_cast<TargetIndexSDNode>(this)) {
685     OS << "<" << TI->getIndex() << '+' << TI->getOffset() << ">";
686     if (unsigned TF = TI->getTargetFlags())
687       OS << " [TF=" << TF << ']';
688   } else if (const BasicBlockSDNode *BBDN = dyn_cast<BasicBlockSDNode>(this)) {
689     OS << "<";
690     const Value *LBB = (const Value*)BBDN->getBasicBlock()->getBasicBlock();
691     if (LBB)
692       OS << LBB->getName() << " ";
693     OS << (const void*)BBDN->getBasicBlock() << ">";
694   } else if (const RegisterSDNode *R = dyn_cast<RegisterSDNode>(this)) {
695     OS << ' ' << printReg(R->getReg(),
696                           G ? G->getSubtarget().getRegisterInfo() : nullptr);
697   } else if (const ExternalSymbolSDNode *ES =
698              dyn_cast<ExternalSymbolSDNode>(this)) {
699     OS << "'" << ES->getSymbol() << "'";
700     if (unsigned int TF = ES->getTargetFlags())
701       OS << " [TF=" << TF << ']';
702   } else if (const SrcValueSDNode *M = dyn_cast<SrcValueSDNode>(this)) {
703     if (M->getValue())
704       OS << "<" << M->getValue() << ">";
705     else
706       OS << "<null>";
707   } else if (const MDNodeSDNode *MD = dyn_cast<MDNodeSDNode>(this)) {
708     if (MD->getMD())
709       OS << "<" << MD->getMD() << ">";
710     else
711       OS << "<null>";
712   } else if (const VTSDNode *N = dyn_cast<VTSDNode>(this)) {
713     OS << ":" << N->getVT();
714   }
715   else if (const LoadSDNode *LD = dyn_cast<LoadSDNode>(this)) {
716     OS << "<";
717 
718     printMemOperand(OS, *LD->getMemOperand(), G);
719 
720     bool doExt = true;
721     switch (LD->getExtensionType()) {
722     default: doExt = false; break;
723     case ISD::EXTLOAD:  OS << ", anyext"; break;
724     case ISD::SEXTLOAD: OS << ", sext"; break;
725     case ISD::ZEXTLOAD: OS << ", zext"; break;
726     }
727     if (doExt)
728       OS << " from " << LD->getMemoryVT();
729 
730     const char *AM = getIndexedModeName(LD->getAddressingMode());
731     if (*AM)
732       OS << ", " << AM;
733 
734     OS << ">";
735   } else if (const StoreSDNode *ST = dyn_cast<StoreSDNode>(this)) {
736     OS << "<";
737     printMemOperand(OS, *ST->getMemOperand(), G);
738 
739     if (ST->isTruncatingStore())
740       OS << ", trunc to " << ST->getMemoryVT();
741 
742     const char *AM = getIndexedModeName(ST->getAddressingMode());
743     if (*AM)
744       OS << ", " << AM;
745 
746     OS << ">";
747   } else if (const MaskedLoadSDNode *MLd = dyn_cast<MaskedLoadSDNode>(this)) {
748     OS << "<";
749 
750     printMemOperand(OS, *MLd->getMemOperand(), G);
751 
752     bool doExt = true;
753     switch (MLd->getExtensionType()) {
754     default: doExt = false; break;
755     case ISD::EXTLOAD:  OS << ", anyext"; break;
756     case ISD::SEXTLOAD: OS << ", sext"; break;
757     case ISD::ZEXTLOAD: OS << ", zext"; break;
758     }
759     if (doExt)
760       OS << " from " << MLd->getMemoryVT();
761 
762     const char *AM = getIndexedModeName(MLd->getAddressingMode());
763     if (*AM)
764       OS << ", " << AM;
765 
766     if (MLd->isExpandingLoad())
767       OS << ", expanding";
768 
769     OS << ">";
770   } else if (const MaskedStoreSDNode *MSt = dyn_cast<MaskedStoreSDNode>(this)) {
771     OS << "<";
772     printMemOperand(OS, *MSt->getMemOperand(), G);
773 
774     if (MSt->isTruncatingStore())
775       OS << ", trunc to " << MSt->getMemoryVT();
776 
777     const char *AM = getIndexedModeName(MSt->getAddressingMode());
778     if (*AM)
779       OS << ", " << AM;
780 
781     if (MSt->isCompressingStore())
782       OS << ", compressing";
783 
784     OS << ">";
785   } else if (const auto *MGather = dyn_cast<MaskedGatherSDNode>(this)) {
786     OS << "<";
787     printMemOperand(OS, *MGather->getMemOperand(), G);
788 
789     bool doExt = true;
790     switch (MGather->getExtensionType()) {
791     default: doExt = false; break;
792     case ISD::EXTLOAD:  OS << ", anyext"; break;
793     case ISD::SEXTLOAD: OS << ", sext"; break;
794     case ISD::ZEXTLOAD: OS << ", zext"; break;
795     }
796     if (doExt)
797       OS << " from " << MGather->getMemoryVT();
798 
799     auto Signed = MGather->isIndexSigned() ? "signed" : "unsigned";
800     auto Scaled = MGather->isIndexScaled() ? "scaled" : "unscaled";
801     OS << ", " << Signed << " " << Scaled << " offset";
802 
803     OS << ">";
804   } else if (const auto *MScatter = dyn_cast<MaskedScatterSDNode>(this)) {
805     OS << "<";
806     printMemOperand(OS, *MScatter->getMemOperand(), G);
807 
808     if (MScatter->isTruncatingStore())
809       OS << ", trunc to " << MScatter->getMemoryVT();
810 
811     auto Signed = MScatter->isIndexSigned() ? "signed" : "unsigned";
812     auto Scaled = MScatter->isIndexScaled() ? "scaled" : "unscaled";
813     OS << ", " << Signed << " " << Scaled << " offset";
814 
815     OS << ">";
816   } else if (const MemSDNode *M = dyn_cast<MemSDNode>(this)) {
817     OS << "<";
818     printMemOperand(OS, *M->getMemOperand(), G);
819     OS << ">";
820   } else if (const BlockAddressSDNode *BA =
821                dyn_cast<BlockAddressSDNode>(this)) {
822     int64_t offset = BA->getOffset();
823     OS << "<";
824     BA->getBlockAddress()->getFunction()->printAsOperand(OS, false);
825     OS << ", ";
826     BA->getBlockAddress()->getBasicBlock()->printAsOperand(OS, false);
827     OS << ">";
828     if (offset > 0)
829       OS << " + " << offset;
830     else
831       OS << " " << offset;
832     if (unsigned int TF = BA->getTargetFlags())
833       OS << " [TF=" << TF << ']';
834   } else if (const AddrSpaceCastSDNode *ASC =
835                dyn_cast<AddrSpaceCastSDNode>(this)) {
836     OS << '['
837        << ASC->getSrcAddressSpace()
838        << " -> "
839        << ASC->getDestAddressSpace()
840        << ']';
841   } else if (const LifetimeSDNode *LN = dyn_cast<LifetimeSDNode>(this)) {
842     if (LN->hasOffset())
843       OS << "<" << LN->getOffset() << " to " << LN->getOffset() + LN->getSize() << ">";
844   } else if (const auto *AA = dyn_cast<AssertAlignSDNode>(this)) {
845     OS << '<' << AA->getAlign().value() << '>';
846   }
847 
848   if (VerboseDAGDumping) {
849     if (unsigned Order = getIROrder())
850         OS << " [ORD=" << Order << ']';
851 
852     if (getNodeId() != -1)
853       OS << " [ID=" << getNodeId() << ']';
854     if (!(isa<ConstantSDNode>(this) || (isa<ConstantFPSDNode>(this))))
855       OS << " # D:" << isDivergent();
856 
857     if (G && !G->GetDbgValues(this).empty()) {
858       OS << " [NoOfDbgValues=" << G->GetDbgValues(this).size() << ']';
859       for (SDDbgValue *Dbg : G->GetDbgValues(this))
860         if (!Dbg->isInvalidated())
861           Dbg->print(OS);
862     } else if (getHasDebugValue())
863       OS << " [NoOfDbgValues>0]";
864 
865     if (const auto *MD = G ? G->getPCSections(this) : nullptr) {
866       OS << " [pcsections ";
867       MD->printAsOperand(OS, G->getMachineFunction().getFunction().getParent());
868       OS << ']';
869     }
870   }
871 }
872 
873 LLVM_DUMP_METHOD void SDDbgValue::print(raw_ostream &OS) const {
874   OS << " DbgVal(Order=" << getOrder() << ')';
875   if (isInvalidated())
876     OS << "(Invalidated)";
877   if (isEmitted())
878     OS << "(Emitted)";
879   OS << "(";
880   bool Comma = false;
881   for (const SDDbgOperand &Op : getLocationOps()) {
882     if (Comma)
883       OS << ", ";
884     switch (Op.getKind()) {
885     case SDDbgOperand::SDNODE:
886       if (Op.getSDNode())
887         OS << "SDNODE=" << PrintNodeId(*Op.getSDNode()) << ':' << Op.getResNo();
888       else
889         OS << "SDNODE";
890       break;
891     case SDDbgOperand::CONST:
892       OS << "CONST";
893       break;
894     case SDDbgOperand::FRAMEIX:
895       OS << "FRAMEIX=" << Op.getFrameIx();
896       break;
897     case SDDbgOperand::VREG:
898       OS << "VREG=" << Op.getVReg();
899       break;
900     }
901     Comma = true;
902   }
903   OS << ")";
904   if (isIndirect()) OS << "(Indirect)";
905   if (isVariadic())
906     OS << "(Variadic)";
907   OS << ":\"" << Var->getName() << '"';
908 #ifndef NDEBUG
909   if (Expr->getNumElements())
910     Expr->dump();
911 #endif
912 }
913 
914 #if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)
915 LLVM_DUMP_METHOD void SDDbgValue::dump() const {
916   if (isInvalidated())
917     return;
918   print(dbgs());
919   dbgs() << "\n";
920 }
921 #endif
922 
923 /// Return true if this node is so simple that we should just print it inline
924 /// if it appears as an operand.
925 static bool shouldPrintInline(const SDNode &Node, const SelectionDAG *G) {
926   // Avoid lots of cluttering when inline printing nodes with associated
927   // DbgValues in verbose mode.
928   if (VerboseDAGDumping && G && !G->GetDbgValues(&Node).empty())
929     return false;
930   if (Node.getOpcode() == ISD::EntryToken)
931     return false;
932   return Node.getNumOperands() == 0;
933 }
934 
935 #if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)
936 static void DumpNodes(const SDNode *N, unsigned indent, const SelectionDAG *G) {
937   for (const SDValue &Op : N->op_values()) {
938     if (shouldPrintInline(*Op.getNode(), G))
939       continue;
940     if (Op.getNode()->hasOneUse())
941       DumpNodes(Op.getNode(), indent+2, G);
942   }
943 
944   dbgs().indent(indent);
945   N->dump(G);
946 }
947 
948 LLVM_DUMP_METHOD void SelectionDAG::dump() const {
949   dbgs() << "SelectionDAG has " << AllNodes.size() << " nodes:\n";
950 
951   for (const SDNode &N : allnodes()) {
952     if (!N.hasOneUse() && &N != getRoot().getNode() &&
953         (!shouldPrintInline(N, this) || N.use_empty()))
954       DumpNodes(&N, 2, this);
955   }
956 
957   if (getRoot().getNode()) DumpNodes(getRoot().getNode(), 2, this);
958   dbgs() << "\n";
959 
960   if (VerboseDAGDumping) {
961     if (DbgBegin() != DbgEnd())
962       dbgs() << "SDDbgValues:\n";
963     for (auto *Dbg : make_range(DbgBegin(), DbgEnd()))
964       Dbg->dump();
965     if (ByvalParmDbgBegin() != ByvalParmDbgEnd())
966       dbgs() << "Byval SDDbgValues:\n";
967     for (auto *Dbg : make_range(ByvalParmDbgBegin(), ByvalParmDbgEnd()))
968       Dbg->dump();
969   }
970   dbgs() << "\n";
971 }
972 #endif
973 
974 void SDNode::printr(raw_ostream &OS, const SelectionDAG *G) const {
975   OS << PrintNodeId(*this) << ": ";
976   print_types(OS, G);
977   OS << " = " << getOperationName(G);
978   print_details(OS, G);
979 }
980 
981 static bool printOperand(raw_ostream &OS, const SelectionDAG *G,
982                          const SDValue Value) {
983   if (!Value.getNode()) {
984     OS << "<null>";
985     return false;
986   }
987 
988   if (shouldPrintInline(*Value.getNode(), G)) {
989     OS << Value->getOperationName(G) << ':';
990     Value->print_types(OS, G);
991     Value->print_details(OS, G);
992     return true;
993   }
994 
995   OS << PrintNodeId(*Value.getNode());
996   if (unsigned RN = Value.getResNo())
997     OS << ':' << RN;
998   return false;
999 }
1000 
1001 #if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)
1002 using VisitedSDNodeSet = SmallPtrSet<const SDNode *, 32>;
1003 
1004 static void DumpNodesr(raw_ostream &OS, const SDNode *N, unsigned indent,
1005                        const SelectionDAG *G, VisitedSDNodeSet &once) {
1006   if (!once.insert(N).second) // If we've been here before, return now.
1007     return;
1008 
1009   // Dump the current SDNode, but don't end the line yet.
1010   OS.indent(indent);
1011   N->printr(OS, G);
1012 
1013   // Having printed this SDNode, walk the children:
1014   for (unsigned i = 0, e = N->getNumOperands(); i != e; ++i) {
1015     if (i) OS << ",";
1016     OS << " ";
1017 
1018     const SDValue Op = N->getOperand(i);
1019     bool printedInline = printOperand(OS, G, Op);
1020     if (printedInline)
1021       once.insert(Op.getNode());
1022   }
1023 
1024   OS << "\n";
1025 
1026   // Dump children that have grandchildren on their own line(s).
1027   for (const SDValue &Op : N->op_values())
1028     DumpNodesr(OS, Op.getNode(), indent+2, G, once);
1029 }
1030 
1031 LLVM_DUMP_METHOD void SDNode::dumpr() const {
1032   VisitedSDNodeSet once;
1033   DumpNodesr(dbgs(), this, 0, nullptr, once);
1034 }
1035 
1036 LLVM_DUMP_METHOD void SDNode::dumpr(const SelectionDAG *G) const {
1037   VisitedSDNodeSet once;
1038   DumpNodesr(dbgs(), this, 0, G, once);
1039 }
1040 #endif
1041 
1042 static void printrWithDepthHelper(raw_ostream &OS, const SDNode *N,
1043                                   const SelectionDAG *G, unsigned depth,
1044                                   unsigned indent) {
1045   if (depth == 0)
1046     return;
1047 
1048   OS.indent(indent);
1049 
1050   N->print(OS, G);
1051 
1052   for (const SDValue &Op : N->op_values()) {
1053     // Don't follow chain operands.
1054     if (Op.getValueType() == MVT::Other)
1055       continue;
1056     OS << '\n';
1057     printrWithDepthHelper(OS, Op.getNode(), G, depth - 1, indent + 2);
1058   }
1059 }
1060 
1061 void SDNode::printrWithDepth(raw_ostream &OS, const SelectionDAG *G,
1062                             unsigned depth) const {
1063   printrWithDepthHelper(OS, this, G, depth, 0);
1064 }
1065 
1066 void SDNode::printrFull(raw_ostream &OS, const SelectionDAG *G) const {
1067   // Don't print impossibly deep things.
1068   printrWithDepth(OS, G, 10);
1069 }
1070 
1071 #if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)
1072 LLVM_DUMP_METHOD
1073 void SDNode::dumprWithDepth(const SelectionDAG *G, unsigned depth) const {
1074   printrWithDepth(dbgs(), G, depth);
1075 }
1076 
1077 LLVM_DUMP_METHOD void SDNode::dumprFull(const SelectionDAG *G) const {
1078   // Don't print impossibly deep things.
1079   dumprWithDepth(G, 10);
1080 }
1081 #endif
1082 
1083 void SDNode::print(raw_ostream &OS, const SelectionDAG *G) const {
1084   printr(OS, G);
1085   // Under VerboseDAGDumping divergence will be printed always.
1086   if (isDivergent() && !VerboseDAGDumping)
1087     OS << " # D:1";
1088   for (unsigned i = 0, e = getNumOperands(); i != e; ++i) {
1089     if (i) OS << ", "; else OS << " ";
1090     printOperand(OS, G, getOperand(i));
1091   }
1092   if (DebugLoc DL = getDebugLoc()) {
1093     OS << ", ";
1094     DL.print(OS);
1095   }
1096 }
1097