1 //===-- LegalizeTypes.h - DAG Type Legalizer class definition ---*- C++ -*-===// 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 file defines the DAGTypeLegalizer class. This is a private interface 10 // shared between the code that implements the SelectionDAG::LegalizeTypes 11 // method. 12 // 13 //===----------------------------------------------------------------------===// 14 15 #ifndef LLVM_LIB_CODEGEN_SELECTIONDAG_LEGALIZETYPES_H 16 #define LLVM_LIB_CODEGEN_SELECTIONDAG_LEGALIZETYPES_H 17 18 #include "llvm/ADT/DenseMap.h" 19 #include "llvm/CodeGen/SelectionDAG.h" 20 #include "llvm/CodeGen/TargetLowering.h" 21 #include "llvm/Support/Compiler.h" 22 #include "llvm/Support/Debug.h" 23 24 namespace llvm { 25 26 //===----------------------------------------------------------------------===// 27 /// This takes an arbitrary SelectionDAG as input and hacks on it until only 28 /// value types the target machine can handle are left. This involves promoting 29 /// small sizes to large sizes or splitting up large values into small values. 30 /// 31 class LLVM_LIBRARY_VISIBILITY DAGTypeLegalizer { 32 const TargetLowering &TLI; 33 SelectionDAG &DAG; 34 public: 35 /// This pass uses the NodeId on the SDNodes to hold information about the 36 /// state of the node. The enum has all the values. 37 enum NodeIdFlags { 38 /// All operands have been processed, so this node is ready to be handled. 39 ReadyToProcess = 0, 40 41 /// This is a new node, not before seen, that was created in the process of 42 /// legalizing some other node. 43 NewNode = -1, 44 45 /// This node's ID needs to be set to the number of its unprocessed 46 /// operands. 47 Unanalyzed = -2, 48 49 /// This is a node that has already been processed. 50 Processed = -3 51 52 // 1+ - This is a node which has this many unprocessed operands. 53 }; 54 private: 55 56 /// This is a bitvector that contains two bits for each simple value type, 57 /// where the two bits correspond to the LegalizeAction enum from 58 /// TargetLowering. This can be queried with "getTypeAction(VT)". 59 TargetLowering::ValueTypeActionImpl ValueTypeActions; 60 61 /// Return how we should legalize values of this type. getTypeAction(EVT VT)62 TargetLowering::LegalizeTypeAction getTypeAction(EVT VT) const { 63 return TLI.getTypeAction(*DAG.getContext(), VT); 64 } 65 66 /// Return true if this type is legal on this target. isTypeLegal(EVT VT)67 bool isTypeLegal(EVT VT) const { 68 return TLI.getTypeAction(*DAG.getContext(), VT) == TargetLowering::TypeLegal; 69 } 70 71 /// Return true if this is a simple legal type. isSimpleLegalType(EVT VT)72 bool isSimpleLegalType(EVT VT) const { 73 return VT.isSimple() && TLI.isTypeLegal(VT); 74 } 75 getSetCCResultType(EVT VT)76 EVT getSetCCResultType(EVT VT) const { 77 return TLI.getSetCCResultType(DAG.getDataLayout(), *DAG.getContext(), VT); 78 } 79 80 /// Pretend all of this node's results are legal. IgnoreNodeResults(SDNode * N)81 bool IgnoreNodeResults(SDNode *N) const { 82 return N->getOpcode() == ISD::TargetConstant || 83 N->getOpcode() == ISD::Register; 84 } 85 86 // Bijection from SDValue to unique id. As each created node gets a 87 // new id we do not need to worry about reuse expunging. Should we 88 // run out of ids, we can do a one time expensive compactifcation. 89 typedef unsigned TableId; 90 91 TableId NextValueId = 1; 92 93 SmallDenseMap<SDValue, TableId, 8> ValueToIdMap; 94 SmallDenseMap<TableId, SDValue, 8> IdToValueMap; 95 96 /// For integer nodes that are below legal width, this map indicates what 97 /// promoted value to use. 98 SmallDenseMap<TableId, TableId, 8> PromotedIntegers; 99 100 /// For integer nodes that need to be expanded this map indicates which 101 /// operands are the expanded version of the input. 102 SmallDenseMap<TableId, std::pair<TableId, TableId>, 8> ExpandedIntegers; 103 104 /// For floating-point nodes converted to integers of the same size, this map 105 /// indicates the converted value to use. 106 SmallDenseMap<TableId, TableId, 8> SoftenedFloats; 107 108 /// For floating-point nodes that have a smaller precision than the smallest 109 /// supported precision, this map indicates what promoted value to use. 110 SmallDenseMap<TableId, TableId, 8> PromotedFloats; 111 112 /// For floating-point nodes that have a smaller precision than the smallest 113 /// supported precision, this map indicates the converted value to use. 114 SmallDenseMap<TableId, TableId, 8> SoftPromotedHalfs; 115 116 /// For float nodes that need to be expanded this map indicates which operands 117 /// are the expanded version of the input. 118 SmallDenseMap<TableId, std::pair<TableId, TableId>, 8> ExpandedFloats; 119 120 /// For nodes that are <1 x ty>, this map indicates the scalar value of type 121 /// 'ty' to use. 122 SmallDenseMap<TableId, TableId, 8> ScalarizedVectors; 123 124 /// For nodes that need to be split this map indicates which operands are the 125 /// expanded version of the input. 126 SmallDenseMap<TableId, std::pair<TableId, TableId>, 8> SplitVectors; 127 128 /// For vector nodes that need to be widened, indicates the widened value to 129 /// use. 130 SmallDenseMap<TableId, TableId, 8> WidenedVectors; 131 132 /// For values that have been replaced with another, indicates the replacement 133 /// value to use. 134 SmallDenseMap<TableId, TableId, 8> ReplacedValues; 135 136 /// This defines a worklist of nodes to process. In order to be pushed onto 137 /// this worklist, all operands of a node must have already been processed. 138 SmallVector<SDNode*, 128> Worklist; 139 getTableId(SDValue V)140 TableId getTableId(SDValue V) { 141 assert(V.getNode() && "Getting TableId on SDValue()"); 142 143 auto I = ValueToIdMap.find(V); 144 if (I != ValueToIdMap.end()) { 145 // replace if there's been a shift. 146 RemapId(I->second); 147 assert(I->second && "All Ids should be nonzero"); 148 return I->second; 149 } 150 // Add if it's not there. 151 ValueToIdMap.insert(std::make_pair(V, NextValueId)); 152 IdToValueMap.insert(std::make_pair(NextValueId, V)); 153 ++NextValueId; 154 assert(NextValueId != 0 && 155 "Ran out of Ids. Increase id type size or add compactification"); 156 return NextValueId - 1; 157 } 158 getSDValue(TableId & Id)159 const SDValue &getSDValue(TableId &Id) { 160 RemapId(Id); 161 assert(Id && "TableId should be non-zero"); 162 auto I = IdToValueMap.find(Id); 163 assert(I != IdToValueMap.end() && "cannot find Id in map"); 164 return I->second; 165 } 166 167 public: DAGTypeLegalizer(SelectionDAG & dag)168 explicit DAGTypeLegalizer(SelectionDAG &dag) 169 : TLI(dag.getTargetLoweringInfo()), DAG(dag), 170 ValueTypeActions(TLI.getValueTypeActions()) { 171 static_assert(MVT::LAST_VALUETYPE <= MVT::MAX_ALLOWED_VALUETYPE, 172 "Too many value types for ValueTypeActions to hold!"); 173 } 174 175 /// This is the main entry point for the type legalizer. This does a 176 /// top-down traversal of the dag, legalizing types as it goes. Returns 177 /// "true" if it made any changes. 178 bool run(); 179 NoteDeletion(SDNode * Old,SDNode * New)180 void NoteDeletion(SDNode *Old, SDNode *New) { 181 assert(Old != New && "node replaced with self"); 182 for (unsigned i = 0, e = Old->getNumValues(); i != e; ++i) { 183 TableId NewId = getTableId(SDValue(New, i)); 184 TableId OldId = getTableId(SDValue(Old, i)); 185 186 if (OldId != NewId) { 187 ReplacedValues[OldId] = NewId; 188 189 // Delete Node from tables. We cannot do this when OldId == NewId, 190 // because NewId can still have table references to it in 191 // ReplacedValues. 192 IdToValueMap.erase(OldId); 193 PromotedIntegers.erase(OldId); 194 ExpandedIntegers.erase(OldId); 195 SoftenedFloats.erase(OldId); 196 PromotedFloats.erase(OldId); 197 SoftPromotedHalfs.erase(OldId); 198 ExpandedFloats.erase(OldId); 199 ScalarizedVectors.erase(OldId); 200 SplitVectors.erase(OldId); 201 WidenedVectors.erase(OldId); 202 } 203 204 ValueToIdMap.erase(SDValue(Old, i)); 205 } 206 } 207 getDAG()208 SelectionDAG &getDAG() const { return DAG; } 209 210 private: 211 SDNode *AnalyzeNewNode(SDNode *N); 212 void AnalyzeNewValue(SDValue &Val); 213 void PerformExpensiveChecks(); 214 void RemapId(TableId &Id); 215 void RemapValue(SDValue &V); 216 217 // Common routines. 218 SDValue BitConvertToInteger(SDValue Op); 219 SDValue BitConvertVectorToIntegerVector(SDValue Op); 220 SDValue CreateStackStoreLoad(SDValue Op, EVT DestVT); 221 bool CustomLowerNode(SDNode *N, EVT VT, bool LegalizeResult); 222 bool CustomWidenLowerNode(SDNode *N, EVT VT); 223 224 /// Replace each result of the given MERGE_VALUES node with the corresponding 225 /// input operand, except for the result 'ResNo', for which the corresponding 226 /// input operand is returned. 227 SDValue DisintegrateMERGE_VALUES(SDNode *N, unsigned ResNo); 228 229 SDValue JoinIntegers(SDValue Lo, SDValue Hi); 230 231 std::pair<SDValue, SDValue> ExpandAtomic(SDNode *Node); 232 233 SDValue PromoteTargetBoolean(SDValue Bool, EVT ValVT); 234 235 void ReplaceValueWith(SDValue From, SDValue To); 236 void SplitInteger(SDValue Op, SDValue &Lo, SDValue &Hi); 237 void SplitInteger(SDValue Op, EVT LoVT, EVT HiVT, 238 SDValue &Lo, SDValue &Hi); 239 240 //===--------------------------------------------------------------------===// 241 // Integer Promotion Support: LegalizeIntegerTypes.cpp 242 //===--------------------------------------------------------------------===// 243 244 /// Given a processed operand Op which was promoted to a larger integer type, 245 /// this returns the promoted value. The low bits of the promoted value 246 /// corresponding to the original type are exactly equal to Op. 247 /// The extra bits contain rubbish, so the promoted value may need to be zero- 248 /// or sign-extended from the original type before it is usable (the helpers 249 /// SExtPromotedInteger and ZExtPromotedInteger can do this for you). 250 /// For example, if Op is an i16 and was promoted to an i32, then this method 251 /// returns an i32, the lower 16 bits of which coincide with Op, and the upper 252 /// 16 bits of which contain rubbish. GetPromotedInteger(SDValue Op)253 SDValue GetPromotedInteger(SDValue Op) { 254 TableId &PromotedId = PromotedIntegers[getTableId(Op)]; 255 SDValue PromotedOp = getSDValue(PromotedId); 256 assert(PromotedOp.getNode() && "Operand wasn't promoted?"); 257 return PromotedOp; 258 } 259 void SetPromotedInteger(SDValue Op, SDValue Result); 260 261 /// Get a promoted operand and sign extend it to the final size. SExtPromotedInteger(SDValue Op)262 SDValue SExtPromotedInteger(SDValue Op) { 263 EVT OldVT = Op.getValueType(); 264 SDLoc dl(Op); 265 Op = GetPromotedInteger(Op); 266 return DAG.getNode(ISD::SIGN_EXTEND_INREG, dl, Op.getValueType(), Op, 267 DAG.getValueType(OldVT)); 268 } 269 270 /// Get a promoted operand and zero extend it to the final size. ZExtPromotedInteger(SDValue Op)271 SDValue ZExtPromotedInteger(SDValue Op) { 272 EVT OldVT = Op.getValueType(); 273 SDLoc dl(Op); 274 Op = GetPromotedInteger(Op); 275 return DAG.getZeroExtendInReg(Op, dl, OldVT); 276 } 277 278 // Get a promoted operand and sign or zero extend it to the final size 279 // (depending on TargetLoweringInfo::isSExtCheaperThanZExt). For a given 280 // subtarget and type, the choice of sign or zero-extension will be 281 // consistent. SExtOrZExtPromotedInteger(SDValue Op)282 SDValue SExtOrZExtPromotedInteger(SDValue Op) { 283 EVT OldVT = Op.getValueType(); 284 SDLoc DL(Op); 285 Op = GetPromotedInteger(Op); 286 if (TLI.isSExtCheaperThanZExt(OldVT, Op.getValueType())) 287 return DAG.getNode(ISD::SIGN_EXTEND_INREG, DL, Op.getValueType(), Op, 288 DAG.getValueType(OldVT)); 289 return DAG.getZeroExtendInReg(Op, DL, OldVT); 290 } 291 292 // Integer Result Promotion. 293 void PromoteIntegerResult(SDNode *N, unsigned ResNo); 294 SDValue PromoteIntRes_MERGE_VALUES(SDNode *N, unsigned ResNo); 295 SDValue PromoteIntRes_AssertSext(SDNode *N); 296 SDValue PromoteIntRes_AssertZext(SDNode *N); 297 SDValue PromoteIntRes_Atomic0(AtomicSDNode *N); 298 SDValue PromoteIntRes_Atomic1(AtomicSDNode *N); 299 SDValue PromoteIntRes_AtomicCmpSwap(AtomicSDNode *N, unsigned ResNo); 300 SDValue PromoteIntRes_EXTRACT_SUBVECTOR(SDNode *N); 301 SDValue PromoteIntRes_VECTOR_REVERSE(SDNode *N); 302 SDValue PromoteIntRes_VECTOR_SHUFFLE(SDNode *N); 303 SDValue PromoteIntRes_VECTOR_SPLICE(SDNode *N); 304 SDValue PromoteIntRes_BUILD_VECTOR(SDNode *N); 305 SDValue PromoteIntRes_SCALAR_TO_VECTOR(SDNode *N); 306 SDValue PromoteIntRes_SPLAT_VECTOR(SDNode *N); 307 SDValue PromoteIntRes_STEP_VECTOR(SDNode *N); 308 SDValue PromoteIntRes_EXTEND_VECTOR_INREG(SDNode *N); 309 SDValue PromoteIntRes_INSERT_VECTOR_ELT(SDNode *N); 310 SDValue PromoteIntRes_CONCAT_VECTORS(SDNode *N); 311 SDValue PromoteIntRes_BITCAST(SDNode *N); 312 SDValue PromoteIntRes_BSWAP(SDNode *N); 313 SDValue PromoteIntRes_BITREVERSE(SDNode *N); 314 SDValue PromoteIntRes_BUILD_PAIR(SDNode *N); 315 SDValue PromoteIntRes_Constant(SDNode *N); 316 SDValue PromoteIntRes_CTLZ(SDNode *N); 317 SDValue PromoteIntRes_CTPOP_PARITY(SDNode *N); 318 SDValue PromoteIntRes_CTTZ(SDNode *N); 319 SDValue PromoteIntRes_EXTRACT_VECTOR_ELT(SDNode *N); 320 SDValue PromoteIntRes_FP_TO_XINT(SDNode *N); 321 SDValue PromoteIntRes_FP_TO_XINT_SAT(SDNode *N); 322 SDValue PromoteIntRes_FP_TO_FP16(SDNode *N); 323 SDValue PromoteIntRes_FREEZE(SDNode *N); 324 SDValue PromoteIntRes_INT_EXTEND(SDNode *N); 325 SDValue PromoteIntRes_LOAD(LoadSDNode *N); 326 SDValue PromoteIntRes_MLOAD(MaskedLoadSDNode *N); 327 SDValue PromoteIntRes_MGATHER(MaskedGatherSDNode *N); 328 SDValue PromoteIntRes_Overflow(SDNode *N); 329 SDValue PromoteIntRes_SADDSUBO(SDNode *N, unsigned ResNo); 330 SDValue PromoteIntRes_SELECT(SDNode *N); 331 SDValue PromoteIntRes_VSELECT(SDNode *N); 332 SDValue PromoteIntRes_SELECT_CC(SDNode *N); 333 SDValue PromoteIntRes_SETCC(SDNode *N); 334 SDValue PromoteIntRes_SHL(SDNode *N); 335 SDValue PromoteIntRes_SimpleIntBinOp(SDNode *N); 336 SDValue PromoteIntRes_ZExtIntBinOp(SDNode *N); 337 SDValue PromoteIntRes_SExtIntBinOp(SDNode *N); 338 SDValue PromoteIntRes_UMINUMAX(SDNode *N); 339 SDValue PromoteIntRes_SIGN_EXTEND_INREG(SDNode *N); 340 SDValue PromoteIntRes_SRA(SDNode *N); 341 SDValue PromoteIntRes_SRL(SDNode *N); 342 SDValue PromoteIntRes_TRUNCATE(SDNode *N); 343 SDValue PromoteIntRes_UADDSUBO(SDNode *N, unsigned ResNo); 344 SDValue PromoteIntRes_ADDSUBCARRY(SDNode *N, unsigned ResNo); 345 SDValue PromoteIntRes_SADDSUBO_CARRY(SDNode *N, unsigned ResNo); 346 SDValue PromoteIntRes_UNDEF(SDNode *N); 347 SDValue PromoteIntRes_VAARG(SDNode *N); 348 SDValue PromoteIntRes_VSCALE(SDNode *N); 349 SDValue PromoteIntRes_XMULO(SDNode *N, unsigned ResNo); 350 SDValue PromoteIntRes_ADDSUBSHLSAT(SDNode *N); 351 SDValue PromoteIntRes_MULFIX(SDNode *N); 352 SDValue PromoteIntRes_DIVFIX(SDNode *N); 353 SDValue PromoteIntRes_FLT_ROUNDS(SDNode *N); 354 SDValue PromoteIntRes_VECREDUCE(SDNode *N); 355 SDValue PromoteIntRes_ABS(SDNode *N); 356 SDValue PromoteIntRes_Rotate(SDNode *N); 357 SDValue PromoteIntRes_FunnelShift(SDNode *N); 358 359 // Integer Operand Promotion. 360 bool PromoteIntegerOperand(SDNode *N, unsigned OpNo); 361 SDValue PromoteIntOp_ANY_EXTEND(SDNode *N); 362 SDValue PromoteIntOp_ATOMIC_STORE(AtomicSDNode *N); 363 SDValue PromoteIntOp_BITCAST(SDNode *N); 364 SDValue PromoteIntOp_BUILD_PAIR(SDNode *N); 365 SDValue PromoteIntOp_BR_CC(SDNode *N, unsigned OpNo); 366 SDValue PromoteIntOp_BRCOND(SDNode *N, unsigned OpNo); 367 SDValue PromoteIntOp_BUILD_VECTOR(SDNode *N); 368 SDValue PromoteIntOp_INSERT_VECTOR_ELT(SDNode *N, unsigned OpNo); 369 SDValue PromoteIntOp_EXTRACT_VECTOR_ELT(SDNode *N); 370 SDValue PromoteIntOp_EXTRACT_SUBVECTOR(SDNode *N); 371 SDValue PromoteIntOp_CONCAT_VECTORS(SDNode *N); 372 SDValue PromoteIntOp_SCALAR_TO_VECTOR(SDNode *N); 373 SDValue PromoteIntOp_SPLAT_VECTOR(SDNode *N); 374 SDValue PromoteIntOp_SELECT(SDNode *N, unsigned OpNo); 375 SDValue PromoteIntOp_SELECT_CC(SDNode *N, unsigned OpNo); 376 SDValue PromoteIntOp_SETCC(SDNode *N, unsigned OpNo); 377 SDValue PromoteIntOp_Shift(SDNode *N); 378 SDValue PromoteIntOp_SIGN_EXTEND(SDNode *N); 379 SDValue PromoteIntOp_SINT_TO_FP(SDNode *N); 380 SDValue PromoteIntOp_STRICT_SINT_TO_FP(SDNode *N); 381 SDValue PromoteIntOp_STORE(StoreSDNode *N, unsigned OpNo); 382 SDValue PromoteIntOp_TRUNCATE(SDNode *N); 383 SDValue PromoteIntOp_UINT_TO_FP(SDNode *N); 384 SDValue PromoteIntOp_STRICT_UINT_TO_FP(SDNode *N); 385 SDValue PromoteIntOp_ZERO_EXTEND(SDNode *N); 386 SDValue PromoteIntOp_MSTORE(MaskedStoreSDNode *N, unsigned OpNo); 387 SDValue PromoteIntOp_MLOAD(MaskedLoadSDNode *N, unsigned OpNo); 388 SDValue PromoteIntOp_MSCATTER(MaskedScatterSDNode *N, unsigned OpNo); 389 SDValue PromoteIntOp_MGATHER(MaskedGatherSDNode *N, unsigned OpNo); 390 SDValue PromoteIntOp_ADDSUBCARRY(SDNode *N, unsigned OpNo); 391 SDValue PromoteIntOp_FRAMERETURNADDR(SDNode *N); 392 SDValue PromoteIntOp_PREFETCH(SDNode *N, unsigned OpNo); 393 SDValue PromoteIntOp_FIX(SDNode *N); 394 SDValue PromoteIntOp_FPOWI(SDNode *N); 395 SDValue PromoteIntOp_VECREDUCE(SDNode *N); 396 SDValue PromoteIntOp_SET_ROUNDING(SDNode *N); 397 398 void PromoteSetCCOperands(SDValue &LHS,SDValue &RHS, ISD::CondCode Code); 399 400 //===--------------------------------------------------------------------===// 401 // Integer Expansion Support: LegalizeIntegerTypes.cpp 402 //===--------------------------------------------------------------------===// 403 404 /// Given a processed operand Op which was expanded into two integers of half 405 /// the size, this returns the two halves. The low bits of Op are exactly 406 /// equal to the bits of Lo; the high bits exactly equal Hi. 407 /// For example, if Op is an i64 which was expanded into two i32's, then this 408 /// method returns the two i32's, with Lo being equal to the lower 32 bits of 409 /// Op, and Hi being equal to the upper 32 bits. 410 void GetExpandedInteger(SDValue Op, SDValue &Lo, SDValue &Hi); 411 void SetExpandedInteger(SDValue Op, SDValue Lo, SDValue Hi); 412 413 // Integer Result Expansion. 414 void ExpandIntegerResult(SDNode *N, unsigned ResNo); 415 void ExpandIntRes_ANY_EXTEND (SDNode *N, SDValue &Lo, SDValue &Hi); 416 void ExpandIntRes_AssertSext (SDNode *N, SDValue &Lo, SDValue &Hi); 417 void ExpandIntRes_AssertZext (SDNode *N, SDValue &Lo, SDValue &Hi); 418 void ExpandIntRes_Constant (SDNode *N, SDValue &Lo, SDValue &Hi); 419 void ExpandIntRes_ABS (SDNode *N, SDValue &Lo, SDValue &Hi); 420 void ExpandIntRes_CTLZ (SDNode *N, SDValue &Lo, SDValue &Hi); 421 void ExpandIntRes_CTPOP (SDNode *N, SDValue &Lo, SDValue &Hi); 422 void ExpandIntRes_CTTZ (SDNode *N, SDValue &Lo, SDValue &Hi); 423 void ExpandIntRes_LOAD (LoadSDNode *N, SDValue &Lo, SDValue &Hi); 424 void ExpandIntRes_READCYCLECOUNTER (SDNode *N, SDValue &Lo, SDValue &Hi); 425 void ExpandIntRes_SIGN_EXTEND (SDNode *N, SDValue &Lo, SDValue &Hi); 426 void ExpandIntRes_SIGN_EXTEND_INREG (SDNode *N, SDValue &Lo, SDValue &Hi); 427 void ExpandIntRes_TRUNCATE (SDNode *N, SDValue &Lo, SDValue &Hi); 428 void ExpandIntRes_ZERO_EXTEND (SDNode *N, SDValue &Lo, SDValue &Hi); 429 void ExpandIntRes_FLT_ROUNDS (SDNode *N, SDValue &Lo, SDValue &Hi); 430 void ExpandIntRes_FP_TO_SINT (SDNode *N, SDValue &Lo, SDValue &Hi); 431 void ExpandIntRes_FP_TO_UINT (SDNode *N, SDValue &Lo, SDValue &Hi); 432 void ExpandIntRes_FP_TO_XINT_SAT (SDNode *N, SDValue &Lo, SDValue &Hi); 433 void ExpandIntRes_LLROUND_LLRINT (SDNode *N, SDValue &Lo, SDValue &Hi); 434 435 void ExpandIntRes_Logical (SDNode *N, SDValue &Lo, SDValue &Hi); 436 void ExpandIntRes_ADDSUB (SDNode *N, SDValue &Lo, SDValue &Hi); 437 void ExpandIntRes_ADDSUBC (SDNode *N, SDValue &Lo, SDValue &Hi); 438 void ExpandIntRes_ADDSUBE (SDNode *N, SDValue &Lo, SDValue &Hi); 439 void ExpandIntRes_ADDSUBCARRY (SDNode *N, SDValue &Lo, SDValue &Hi); 440 void ExpandIntRes_SADDSUBO_CARRY (SDNode *N, SDValue &Lo, SDValue &Hi); 441 void ExpandIntRes_BITREVERSE (SDNode *N, SDValue &Lo, SDValue &Hi); 442 void ExpandIntRes_BSWAP (SDNode *N, SDValue &Lo, SDValue &Hi); 443 void ExpandIntRes_PARITY (SDNode *N, SDValue &Lo, SDValue &Hi); 444 void ExpandIntRes_MUL (SDNode *N, SDValue &Lo, SDValue &Hi); 445 void ExpandIntRes_SDIV (SDNode *N, SDValue &Lo, SDValue &Hi); 446 void ExpandIntRes_SREM (SDNode *N, SDValue &Lo, SDValue &Hi); 447 void ExpandIntRes_UDIV (SDNode *N, SDValue &Lo, SDValue &Hi); 448 void ExpandIntRes_UREM (SDNode *N, SDValue &Lo, SDValue &Hi); 449 void ExpandIntRes_Shift (SDNode *N, SDValue &Lo, SDValue &Hi); 450 451 void ExpandIntRes_MINMAX (SDNode *N, SDValue &Lo, SDValue &Hi); 452 453 void ExpandIntRes_SADDSUBO (SDNode *N, SDValue &Lo, SDValue &Hi); 454 void ExpandIntRes_UADDSUBO (SDNode *N, SDValue &Lo, SDValue &Hi); 455 void ExpandIntRes_XMULO (SDNode *N, SDValue &Lo, SDValue &Hi); 456 void ExpandIntRes_ADDSUBSAT (SDNode *N, SDValue &Lo, SDValue &Hi); 457 void ExpandIntRes_SHLSAT (SDNode *N, SDValue &Lo, SDValue &Hi); 458 void ExpandIntRes_MULFIX (SDNode *N, SDValue &Lo, SDValue &Hi); 459 void ExpandIntRes_DIVFIX (SDNode *N, SDValue &Lo, SDValue &Hi); 460 461 void ExpandIntRes_ATOMIC_LOAD (SDNode *N, SDValue &Lo, SDValue &Hi); 462 void ExpandIntRes_VECREDUCE (SDNode *N, SDValue &Lo, SDValue &Hi); 463 464 void ExpandIntRes_Rotate (SDNode *N, SDValue &Lo, SDValue &Hi); 465 void ExpandIntRes_FunnelShift (SDNode *N, SDValue &Lo, SDValue &Hi); 466 467 void ExpandShiftByConstant(SDNode *N, const APInt &Amt, 468 SDValue &Lo, SDValue &Hi); 469 bool ExpandShiftWithKnownAmountBit(SDNode *N, SDValue &Lo, SDValue &Hi); 470 bool ExpandShiftWithUnknownAmountBit(SDNode *N, SDValue &Lo, SDValue &Hi); 471 472 // Integer Operand Expansion. 473 bool ExpandIntegerOperand(SDNode *N, unsigned OpNo); 474 SDValue ExpandIntOp_BR_CC(SDNode *N); 475 SDValue ExpandIntOp_SELECT_CC(SDNode *N); 476 SDValue ExpandIntOp_SETCC(SDNode *N); 477 SDValue ExpandIntOp_SETCCCARRY(SDNode *N); 478 SDValue ExpandIntOp_Shift(SDNode *N); 479 SDValue ExpandIntOp_SINT_TO_FP(SDNode *N); 480 SDValue ExpandIntOp_STORE(StoreSDNode *N, unsigned OpNo); 481 SDValue ExpandIntOp_TRUNCATE(SDNode *N); 482 SDValue ExpandIntOp_UINT_TO_FP(SDNode *N); 483 SDValue ExpandIntOp_RETURNADDR(SDNode *N); 484 SDValue ExpandIntOp_ATOMIC_STORE(SDNode *N); 485 SDValue ExpandIntOp_SPLAT_VECTOR(SDNode *N); 486 487 void IntegerExpandSetCCOperands(SDValue &NewLHS, SDValue &NewRHS, 488 ISD::CondCode &CCCode, const SDLoc &dl); 489 490 //===--------------------------------------------------------------------===// 491 // Float to Integer Conversion Support: LegalizeFloatTypes.cpp 492 //===--------------------------------------------------------------------===// 493 494 /// GetSoftenedFloat - Given a processed operand Op which was converted to an 495 /// integer of the same size, this returns the integer. The integer contains 496 /// exactly the same bits as Op - only the type changed. For example, if Op 497 /// is an f32 which was softened to an i32, then this method returns an i32, 498 /// the bits of which coincide with those of Op GetSoftenedFloat(SDValue Op)499 SDValue GetSoftenedFloat(SDValue Op) { 500 TableId Id = getTableId(Op); 501 auto Iter = SoftenedFloats.find(Id); 502 if (Iter == SoftenedFloats.end()) { 503 assert(isSimpleLegalType(Op.getValueType()) && 504 "Operand wasn't converted to integer?"); 505 return Op; 506 } 507 SDValue SoftenedOp = getSDValue(Iter->second); 508 assert(SoftenedOp.getNode() && "Unconverted op in SoftenedFloats?"); 509 return SoftenedOp; 510 } 511 void SetSoftenedFloat(SDValue Op, SDValue Result); 512 513 // Convert Float Results to Integer. 514 void SoftenFloatResult(SDNode *N, unsigned ResNo); 515 SDValue SoftenFloatRes_Unary(SDNode *N, RTLIB::Libcall LC); 516 SDValue SoftenFloatRes_Binary(SDNode *N, RTLIB::Libcall LC); 517 SDValue SoftenFloatRes_MERGE_VALUES(SDNode *N, unsigned ResNo); 518 SDValue SoftenFloatRes_BITCAST(SDNode *N); 519 SDValue SoftenFloatRes_BUILD_PAIR(SDNode *N); 520 SDValue SoftenFloatRes_ConstantFP(SDNode *N); 521 SDValue SoftenFloatRes_EXTRACT_VECTOR_ELT(SDNode *N, unsigned ResNo); 522 SDValue SoftenFloatRes_FABS(SDNode *N); 523 SDValue SoftenFloatRes_FMINNUM(SDNode *N); 524 SDValue SoftenFloatRes_FMAXNUM(SDNode *N); 525 SDValue SoftenFloatRes_FADD(SDNode *N); 526 SDValue SoftenFloatRes_FCBRT(SDNode *N); 527 SDValue SoftenFloatRes_FCEIL(SDNode *N); 528 SDValue SoftenFloatRes_FCOPYSIGN(SDNode *N); 529 SDValue SoftenFloatRes_FCOS(SDNode *N); 530 SDValue SoftenFloatRes_FDIV(SDNode *N); 531 SDValue SoftenFloatRes_FEXP(SDNode *N); 532 SDValue SoftenFloatRes_FEXP2(SDNode *N); 533 SDValue SoftenFloatRes_FFLOOR(SDNode *N); 534 SDValue SoftenFloatRes_FLOG(SDNode *N); 535 SDValue SoftenFloatRes_FLOG2(SDNode *N); 536 SDValue SoftenFloatRes_FLOG10(SDNode *N); 537 SDValue SoftenFloatRes_FMA(SDNode *N); 538 SDValue SoftenFloatRes_FMUL(SDNode *N); 539 SDValue SoftenFloatRes_FNEARBYINT(SDNode *N); 540 SDValue SoftenFloatRes_FNEG(SDNode *N); 541 SDValue SoftenFloatRes_FP_EXTEND(SDNode *N); 542 SDValue SoftenFloatRes_FP16_TO_FP(SDNode *N); 543 SDValue SoftenFloatRes_FP_ROUND(SDNode *N); 544 SDValue SoftenFloatRes_FPOW(SDNode *N); 545 SDValue SoftenFloatRes_FPOWI(SDNode *N); 546 SDValue SoftenFloatRes_FREEZE(SDNode *N); 547 SDValue SoftenFloatRes_FREM(SDNode *N); 548 SDValue SoftenFloatRes_FRINT(SDNode *N); 549 SDValue SoftenFloatRes_FROUND(SDNode *N); 550 SDValue SoftenFloatRes_FROUNDEVEN(SDNode *N); 551 SDValue SoftenFloatRes_FSIN(SDNode *N); 552 SDValue SoftenFloatRes_FSQRT(SDNode *N); 553 SDValue SoftenFloatRes_FSUB(SDNode *N); 554 SDValue SoftenFloatRes_FTRUNC(SDNode *N); 555 SDValue SoftenFloatRes_LOAD(SDNode *N); 556 SDValue SoftenFloatRes_SELECT(SDNode *N); 557 SDValue SoftenFloatRes_SELECT_CC(SDNode *N); 558 SDValue SoftenFloatRes_UNDEF(SDNode *N); 559 SDValue SoftenFloatRes_VAARG(SDNode *N); 560 SDValue SoftenFloatRes_XINT_TO_FP(SDNode *N); 561 SDValue SoftenFloatRes_VECREDUCE(SDNode *N); 562 SDValue SoftenFloatRes_VECREDUCE_SEQ(SDNode *N); 563 564 // Convert Float Operand to Integer. 565 bool SoftenFloatOperand(SDNode *N, unsigned OpNo); 566 SDValue SoftenFloatOp_Unary(SDNode *N, RTLIB::Libcall LC); 567 SDValue SoftenFloatOp_BITCAST(SDNode *N); 568 SDValue SoftenFloatOp_BR_CC(SDNode *N); 569 SDValue SoftenFloatOp_FP_ROUND(SDNode *N); 570 SDValue SoftenFloatOp_FP_TO_XINT(SDNode *N); 571 SDValue SoftenFloatOp_FP_TO_XINT_SAT(SDNode *N); 572 SDValue SoftenFloatOp_LROUND(SDNode *N); 573 SDValue SoftenFloatOp_LLROUND(SDNode *N); 574 SDValue SoftenFloatOp_LRINT(SDNode *N); 575 SDValue SoftenFloatOp_LLRINT(SDNode *N); 576 SDValue SoftenFloatOp_SELECT_CC(SDNode *N); 577 SDValue SoftenFloatOp_SETCC(SDNode *N); 578 SDValue SoftenFloatOp_STORE(SDNode *N, unsigned OpNo); 579 SDValue SoftenFloatOp_FCOPYSIGN(SDNode *N); 580 581 //===--------------------------------------------------------------------===// 582 // Float Expansion Support: LegalizeFloatTypes.cpp 583 //===--------------------------------------------------------------------===// 584 585 /// Given a processed operand Op which was expanded into two floating-point 586 /// values of half the size, this returns the two halves. 587 /// The low bits of Op are exactly equal to the bits of Lo; the high bits 588 /// exactly equal Hi. For example, if Op is a ppcf128 which was expanded 589 /// into two f64's, then this method returns the two f64's, with Lo being 590 /// equal to the lower 64 bits of Op, and Hi to the upper 64 bits. 591 void GetExpandedFloat(SDValue Op, SDValue &Lo, SDValue &Hi); 592 void SetExpandedFloat(SDValue Op, SDValue Lo, SDValue Hi); 593 594 // Float Result Expansion. 595 void ExpandFloatResult(SDNode *N, unsigned ResNo); 596 void ExpandFloatRes_ConstantFP(SDNode *N, SDValue &Lo, SDValue &Hi); 597 void ExpandFloatRes_Unary(SDNode *N, RTLIB::Libcall LC, 598 SDValue &Lo, SDValue &Hi); 599 void ExpandFloatRes_Binary(SDNode *N, RTLIB::Libcall LC, 600 SDValue &Lo, SDValue &Hi); 601 void ExpandFloatRes_FABS (SDNode *N, SDValue &Lo, SDValue &Hi); 602 void ExpandFloatRes_FMINNUM (SDNode *N, SDValue &Lo, SDValue &Hi); 603 void ExpandFloatRes_FMAXNUM (SDNode *N, SDValue &Lo, SDValue &Hi); 604 void ExpandFloatRes_FADD (SDNode *N, SDValue &Lo, SDValue &Hi); 605 void ExpandFloatRes_FCBRT (SDNode *N, SDValue &Lo, SDValue &Hi); 606 void ExpandFloatRes_FCEIL (SDNode *N, SDValue &Lo, SDValue &Hi); 607 void ExpandFloatRes_FCOPYSIGN (SDNode *N, SDValue &Lo, SDValue &Hi); 608 void ExpandFloatRes_FCOS (SDNode *N, SDValue &Lo, SDValue &Hi); 609 void ExpandFloatRes_FDIV (SDNode *N, SDValue &Lo, SDValue &Hi); 610 void ExpandFloatRes_FEXP (SDNode *N, SDValue &Lo, SDValue &Hi); 611 void ExpandFloatRes_FEXP2 (SDNode *N, SDValue &Lo, SDValue &Hi); 612 void ExpandFloatRes_FFLOOR (SDNode *N, SDValue &Lo, SDValue &Hi); 613 void ExpandFloatRes_FLOG (SDNode *N, SDValue &Lo, SDValue &Hi); 614 void ExpandFloatRes_FLOG2 (SDNode *N, SDValue &Lo, SDValue &Hi); 615 void ExpandFloatRes_FLOG10 (SDNode *N, SDValue &Lo, SDValue &Hi); 616 void ExpandFloatRes_FMA (SDNode *N, SDValue &Lo, SDValue &Hi); 617 void ExpandFloatRes_FMUL (SDNode *N, SDValue &Lo, SDValue &Hi); 618 void ExpandFloatRes_FNEARBYINT(SDNode *N, SDValue &Lo, SDValue &Hi); 619 void ExpandFloatRes_FNEG (SDNode *N, SDValue &Lo, SDValue &Hi); 620 void ExpandFloatRes_FP_EXTEND (SDNode *N, SDValue &Lo, SDValue &Hi); 621 void ExpandFloatRes_FPOW (SDNode *N, SDValue &Lo, SDValue &Hi); 622 void ExpandFloatRes_FPOWI (SDNode *N, SDValue &Lo, SDValue &Hi); 623 void ExpandFloatRes_FREEZE (SDNode *N, SDValue &Lo, SDValue &Hi); 624 void ExpandFloatRes_FREM (SDNode *N, SDValue &Lo, SDValue &Hi); 625 void ExpandFloatRes_FRINT (SDNode *N, SDValue &Lo, SDValue &Hi); 626 void ExpandFloatRes_FROUND (SDNode *N, SDValue &Lo, SDValue &Hi); 627 void ExpandFloatRes_FROUNDEVEN(SDNode *N, SDValue &Lo, SDValue &Hi); 628 void ExpandFloatRes_FSIN (SDNode *N, SDValue &Lo, SDValue &Hi); 629 void ExpandFloatRes_FSQRT (SDNode *N, SDValue &Lo, SDValue &Hi); 630 void ExpandFloatRes_FSUB (SDNode *N, SDValue &Lo, SDValue &Hi); 631 void ExpandFloatRes_FTRUNC (SDNode *N, SDValue &Lo, SDValue &Hi); 632 void ExpandFloatRes_LOAD (SDNode *N, SDValue &Lo, SDValue &Hi); 633 void ExpandFloatRes_XINT_TO_FP(SDNode *N, SDValue &Lo, SDValue &Hi); 634 635 // Float Operand Expansion. 636 bool ExpandFloatOperand(SDNode *N, unsigned OpNo); 637 SDValue ExpandFloatOp_BR_CC(SDNode *N); 638 SDValue ExpandFloatOp_FCOPYSIGN(SDNode *N); 639 SDValue ExpandFloatOp_FP_ROUND(SDNode *N); 640 SDValue ExpandFloatOp_FP_TO_XINT(SDNode *N); 641 SDValue ExpandFloatOp_LROUND(SDNode *N); 642 SDValue ExpandFloatOp_LLROUND(SDNode *N); 643 SDValue ExpandFloatOp_LRINT(SDNode *N); 644 SDValue ExpandFloatOp_LLRINT(SDNode *N); 645 SDValue ExpandFloatOp_SELECT_CC(SDNode *N); 646 SDValue ExpandFloatOp_SETCC(SDNode *N); 647 SDValue ExpandFloatOp_STORE(SDNode *N, unsigned OpNo); 648 649 void FloatExpandSetCCOperands(SDValue &NewLHS, SDValue &NewRHS, 650 ISD::CondCode &CCCode, const SDLoc &dl, 651 SDValue &Chain, bool IsSignaling = false); 652 653 //===--------------------------------------------------------------------===// 654 // Float promotion support: LegalizeFloatTypes.cpp 655 //===--------------------------------------------------------------------===// 656 GetPromotedFloat(SDValue Op)657 SDValue GetPromotedFloat(SDValue Op) { 658 TableId &PromotedId = PromotedFloats[getTableId(Op)]; 659 SDValue PromotedOp = getSDValue(PromotedId); 660 assert(PromotedOp.getNode() && "Operand wasn't promoted?"); 661 return PromotedOp; 662 } 663 void SetPromotedFloat(SDValue Op, SDValue Result); 664 665 void PromoteFloatResult(SDNode *N, unsigned ResNo); 666 SDValue PromoteFloatRes_BITCAST(SDNode *N); 667 SDValue PromoteFloatRes_BinOp(SDNode *N); 668 SDValue PromoteFloatRes_ConstantFP(SDNode *N); 669 SDValue PromoteFloatRes_EXTRACT_VECTOR_ELT(SDNode *N); 670 SDValue PromoteFloatRes_FCOPYSIGN(SDNode *N); 671 SDValue PromoteFloatRes_FMAD(SDNode *N); 672 SDValue PromoteFloatRes_FPOWI(SDNode *N); 673 SDValue PromoteFloatRes_FP_ROUND(SDNode *N); 674 SDValue PromoteFloatRes_LOAD(SDNode *N); 675 SDValue PromoteFloatRes_SELECT(SDNode *N); 676 SDValue PromoteFloatRes_SELECT_CC(SDNode *N); 677 SDValue PromoteFloatRes_UnaryOp(SDNode *N); 678 SDValue PromoteFloatRes_UNDEF(SDNode *N); 679 SDValue BitcastToInt_ATOMIC_SWAP(SDNode *N); 680 SDValue PromoteFloatRes_XINT_TO_FP(SDNode *N); 681 SDValue PromoteFloatRes_VECREDUCE(SDNode *N); 682 SDValue PromoteFloatRes_VECREDUCE_SEQ(SDNode *N); 683 684 bool PromoteFloatOperand(SDNode *N, unsigned OpNo); 685 SDValue PromoteFloatOp_BITCAST(SDNode *N, unsigned OpNo); 686 SDValue PromoteFloatOp_FCOPYSIGN(SDNode *N, unsigned OpNo); 687 SDValue PromoteFloatOp_FP_EXTEND(SDNode *N, unsigned OpNo); 688 SDValue PromoteFloatOp_FP_TO_XINT(SDNode *N, unsigned OpNo); 689 SDValue PromoteFloatOp_FP_TO_XINT_SAT(SDNode *N, unsigned OpNo); 690 SDValue PromoteFloatOp_STORE(SDNode *N, unsigned OpNo); 691 SDValue PromoteFloatOp_SELECT_CC(SDNode *N, unsigned OpNo); 692 SDValue PromoteFloatOp_SETCC(SDNode *N, unsigned OpNo); 693 694 //===--------------------------------------------------------------------===// 695 // Half soft promotion support: LegalizeFloatTypes.cpp 696 //===--------------------------------------------------------------------===// 697 GetSoftPromotedHalf(SDValue Op)698 SDValue GetSoftPromotedHalf(SDValue Op) { 699 TableId &PromotedId = SoftPromotedHalfs[getTableId(Op)]; 700 SDValue PromotedOp = getSDValue(PromotedId); 701 assert(PromotedOp.getNode() && "Operand wasn't promoted?"); 702 return PromotedOp; 703 } 704 void SetSoftPromotedHalf(SDValue Op, SDValue Result); 705 706 void SoftPromoteHalfResult(SDNode *N, unsigned ResNo); 707 SDValue SoftPromoteHalfRes_BinOp(SDNode *N); 708 SDValue SoftPromoteHalfRes_BITCAST(SDNode *N); 709 SDValue SoftPromoteHalfRes_ConstantFP(SDNode *N); 710 SDValue SoftPromoteHalfRes_EXTRACT_VECTOR_ELT(SDNode *N); 711 SDValue SoftPromoteHalfRes_FCOPYSIGN(SDNode *N); 712 SDValue SoftPromoteHalfRes_FMAD(SDNode *N); 713 SDValue SoftPromoteHalfRes_FPOWI(SDNode *N); 714 SDValue SoftPromoteHalfRes_FP_ROUND(SDNode *N); 715 SDValue SoftPromoteHalfRes_LOAD(SDNode *N); 716 SDValue SoftPromoteHalfRes_SELECT(SDNode *N); 717 SDValue SoftPromoteHalfRes_SELECT_CC(SDNode *N); 718 SDValue SoftPromoteHalfRes_UnaryOp(SDNode *N); 719 SDValue SoftPromoteHalfRes_XINT_TO_FP(SDNode *N); 720 SDValue SoftPromoteHalfRes_UNDEF(SDNode *N); 721 SDValue SoftPromoteHalfRes_VECREDUCE(SDNode *N); 722 SDValue SoftPromoteHalfRes_VECREDUCE_SEQ(SDNode *N); 723 724 bool SoftPromoteHalfOperand(SDNode *N, unsigned OpNo); 725 SDValue SoftPromoteHalfOp_BITCAST(SDNode *N); 726 SDValue SoftPromoteHalfOp_FCOPYSIGN(SDNode *N, unsigned OpNo); 727 SDValue SoftPromoteHalfOp_FP_EXTEND(SDNode *N); 728 SDValue SoftPromoteHalfOp_FP_TO_XINT(SDNode *N); 729 SDValue SoftPromoteHalfOp_FP_TO_XINT_SAT(SDNode *N); 730 SDValue SoftPromoteHalfOp_SETCC(SDNode *N); 731 SDValue SoftPromoteHalfOp_SELECT_CC(SDNode *N, unsigned OpNo); 732 SDValue SoftPromoteHalfOp_STORE(SDNode *N, unsigned OpNo); 733 734 //===--------------------------------------------------------------------===// 735 // Scalarization Support: LegalizeVectorTypes.cpp 736 //===--------------------------------------------------------------------===// 737 738 /// Given a processed one-element vector Op which was scalarized to its 739 /// element type, this returns the element. For example, if Op is a v1i32, 740 /// Op = < i32 val >, this method returns val, an i32. GetScalarizedVector(SDValue Op)741 SDValue GetScalarizedVector(SDValue Op) { 742 TableId &ScalarizedId = ScalarizedVectors[getTableId(Op)]; 743 SDValue ScalarizedOp = getSDValue(ScalarizedId); 744 assert(ScalarizedOp.getNode() && "Operand wasn't scalarized?"); 745 return ScalarizedOp; 746 } 747 void SetScalarizedVector(SDValue Op, SDValue Result); 748 749 // Vector Result Scalarization: <1 x ty> -> ty. 750 void ScalarizeVectorResult(SDNode *N, unsigned ResNo); 751 SDValue ScalarizeVecRes_MERGE_VALUES(SDNode *N, unsigned ResNo); 752 SDValue ScalarizeVecRes_BinOp(SDNode *N); 753 SDValue ScalarizeVecRes_TernaryOp(SDNode *N); 754 SDValue ScalarizeVecRes_UnaryOp(SDNode *N); 755 SDValue ScalarizeVecRes_StrictFPOp(SDNode *N); 756 SDValue ScalarizeVecRes_OverflowOp(SDNode *N, unsigned ResNo); 757 SDValue ScalarizeVecRes_InregOp(SDNode *N); 758 SDValue ScalarizeVecRes_VecInregOp(SDNode *N); 759 760 SDValue ScalarizeVecRes_BITCAST(SDNode *N); 761 SDValue ScalarizeVecRes_BUILD_VECTOR(SDNode *N); 762 SDValue ScalarizeVecRes_EXTRACT_SUBVECTOR(SDNode *N); 763 SDValue ScalarizeVecRes_FP_ROUND(SDNode *N); 764 SDValue ScalarizeVecRes_FPOWI(SDNode *N); 765 SDValue ScalarizeVecRes_INSERT_VECTOR_ELT(SDNode *N); 766 SDValue ScalarizeVecRes_LOAD(LoadSDNode *N); 767 SDValue ScalarizeVecRes_SCALAR_TO_VECTOR(SDNode *N); 768 SDValue ScalarizeVecRes_VSELECT(SDNode *N); 769 SDValue ScalarizeVecRes_SELECT(SDNode *N); 770 SDValue ScalarizeVecRes_SELECT_CC(SDNode *N); 771 SDValue ScalarizeVecRes_SETCC(SDNode *N); 772 SDValue ScalarizeVecRes_UNDEF(SDNode *N); 773 SDValue ScalarizeVecRes_VECTOR_SHUFFLE(SDNode *N); 774 SDValue ScalarizeVecRes_FP_TO_XINT_SAT(SDNode *N); 775 776 SDValue ScalarizeVecRes_FIX(SDNode *N); 777 778 // Vector Operand Scalarization: <1 x ty> -> ty. 779 bool ScalarizeVectorOperand(SDNode *N, unsigned OpNo); 780 SDValue ScalarizeVecOp_BITCAST(SDNode *N); 781 SDValue ScalarizeVecOp_UnaryOp(SDNode *N); 782 SDValue ScalarizeVecOp_UnaryOp_StrictFP(SDNode *N); 783 SDValue ScalarizeVecOp_CONCAT_VECTORS(SDNode *N); 784 SDValue ScalarizeVecOp_EXTRACT_VECTOR_ELT(SDNode *N); 785 SDValue ScalarizeVecOp_VSELECT(SDNode *N); 786 SDValue ScalarizeVecOp_VSETCC(SDNode *N); 787 SDValue ScalarizeVecOp_STORE(StoreSDNode *N, unsigned OpNo); 788 SDValue ScalarizeVecOp_FP_ROUND(SDNode *N, unsigned OpNo); 789 SDValue ScalarizeVecOp_STRICT_FP_ROUND(SDNode *N, unsigned OpNo); 790 SDValue ScalarizeVecOp_FP_EXTEND(SDNode *N); 791 SDValue ScalarizeVecOp_STRICT_FP_EXTEND(SDNode *N); 792 SDValue ScalarizeVecOp_VECREDUCE(SDNode *N); 793 SDValue ScalarizeVecOp_VECREDUCE_SEQ(SDNode *N); 794 795 //===--------------------------------------------------------------------===// 796 // Vector Splitting Support: LegalizeVectorTypes.cpp 797 //===--------------------------------------------------------------------===// 798 799 /// Given a processed vector Op which was split into vectors of half the size, 800 /// this method returns the halves. The first elements of Op coincide with the 801 /// elements of Lo; the remaining elements of Op coincide with the elements of 802 /// Hi: Op is what you would get by concatenating Lo and Hi. 803 /// For example, if Op is a v8i32 that was split into two v4i32's, then this 804 /// method returns the two v4i32's, with Lo corresponding to the first 4 805 /// elements of Op, and Hi to the last 4 elements. 806 void GetSplitVector(SDValue Op, SDValue &Lo, SDValue &Hi); 807 void SetSplitVector(SDValue Op, SDValue Lo, SDValue Hi); 808 809 // Helper function for incrementing the pointer when splitting 810 // memory operations 811 void IncrementPointer(MemSDNode *N, EVT MemVT, MachinePointerInfo &MPI, 812 SDValue &Ptr, uint64_t *ScaledOffset = nullptr); 813 814 // Vector Result Splitting: <128 x ty> -> 2 x <64 x ty>. 815 void SplitVectorResult(SDNode *N, unsigned ResNo); 816 void SplitVecRes_BinOp(SDNode *N, SDValue &Lo, SDValue &Hi); 817 void SplitVecRes_TernaryOp(SDNode *N, SDValue &Lo, SDValue &Hi); 818 void SplitVecRes_UnaryOp(SDNode *N, SDValue &Lo, SDValue &Hi); 819 void SplitVecRes_ExtendOp(SDNode *N, SDValue &Lo, SDValue &Hi); 820 void SplitVecRes_InregOp(SDNode *N, SDValue &Lo, SDValue &Hi); 821 void SplitVecRes_ExtVecInRegOp(SDNode *N, SDValue &Lo, SDValue &Hi); 822 void SplitVecRes_StrictFPOp(SDNode *N, SDValue &Lo, SDValue &Hi); 823 void SplitVecRes_OverflowOp(SDNode *N, unsigned ResNo, 824 SDValue &Lo, SDValue &Hi); 825 826 void SplitVecRes_FIX(SDNode *N, SDValue &Lo, SDValue &Hi); 827 828 void SplitVecRes_BITCAST(SDNode *N, SDValue &Lo, SDValue &Hi); 829 void SplitVecRes_BUILD_VECTOR(SDNode *N, SDValue &Lo, SDValue &Hi); 830 void SplitVecRes_CONCAT_VECTORS(SDNode *N, SDValue &Lo, SDValue &Hi); 831 void SplitVecRes_EXTRACT_SUBVECTOR(SDNode *N, SDValue &Lo, SDValue &Hi); 832 void SplitVecRes_INSERT_SUBVECTOR(SDNode *N, SDValue &Lo, SDValue &Hi); 833 void SplitVecRes_FPOWI(SDNode *N, SDValue &Lo, SDValue &Hi); 834 void SplitVecRes_FCOPYSIGN(SDNode *N, SDValue &Lo, SDValue &Hi); 835 void SplitVecRes_INSERT_VECTOR_ELT(SDNode *N, SDValue &Lo, SDValue &Hi); 836 void SplitVecRes_LOAD(LoadSDNode *LD, SDValue &Lo, SDValue &Hi); 837 void SplitVecRes_MLOAD(MaskedLoadSDNode *MLD, SDValue &Lo, SDValue &Hi); 838 void SplitVecRes_MGATHER(MaskedGatherSDNode *MGT, SDValue &Lo, SDValue &Hi); 839 void SplitVecRes_ScalarOp(SDNode *N, SDValue &Lo, SDValue &Hi); 840 void SplitVecRes_STEP_VECTOR(SDNode *N, SDValue &Lo, SDValue &Hi); 841 void SplitVecRes_SETCC(SDNode *N, SDValue &Lo, SDValue &Hi); 842 void SplitVecRes_VECTOR_REVERSE(SDNode *N, SDValue &Lo, SDValue &Hi); 843 void SplitVecRes_VECTOR_SHUFFLE(ShuffleVectorSDNode *N, SDValue &Lo, 844 SDValue &Hi); 845 void SplitVecRes_VECTOR_SPLICE(SDNode *N, SDValue &Lo, SDValue &Hi); 846 void SplitVecRes_VAARG(SDNode *N, SDValue &Lo, SDValue &Hi); 847 void SplitVecRes_FP_TO_XINT_SAT(SDNode *N, SDValue &Lo, SDValue &Hi); 848 849 // Vector Operand Splitting: <128 x ty> -> 2 x <64 x ty>. 850 bool SplitVectorOperand(SDNode *N, unsigned OpNo); 851 SDValue SplitVecOp_VSELECT(SDNode *N, unsigned OpNo); 852 SDValue SplitVecOp_VECREDUCE(SDNode *N, unsigned OpNo); 853 SDValue SplitVecOp_VECREDUCE_SEQ(SDNode *N); 854 SDValue SplitVecOp_UnaryOp(SDNode *N); 855 SDValue SplitVecOp_TruncateHelper(SDNode *N); 856 857 SDValue SplitVecOp_BITCAST(SDNode *N); 858 SDValue SplitVecOp_INSERT_SUBVECTOR(SDNode *N, unsigned OpNo); 859 SDValue SplitVecOp_EXTRACT_SUBVECTOR(SDNode *N); 860 SDValue SplitVecOp_EXTRACT_VECTOR_ELT(SDNode *N); 861 SDValue SplitVecOp_ExtVecInRegOp(SDNode *N); 862 SDValue SplitVecOp_STORE(StoreSDNode *N, unsigned OpNo); 863 SDValue SplitVecOp_MSTORE(MaskedStoreSDNode *N, unsigned OpNo); 864 SDValue SplitVecOp_MSCATTER(MaskedScatterSDNode *N, unsigned OpNo); 865 SDValue SplitVecOp_MGATHER(MaskedGatherSDNode *MGT, unsigned OpNo); 866 SDValue SplitVecOp_CONCAT_VECTORS(SDNode *N); 867 SDValue SplitVecOp_VSETCC(SDNode *N); 868 SDValue SplitVecOp_FP_ROUND(SDNode *N); 869 SDValue SplitVecOp_FCOPYSIGN(SDNode *N); 870 SDValue SplitVecOp_FP_TO_XINT_SAT(SDNode *N); 871 872 //===--------------------------------------------------------------------===// 873 // Vector Widening Support: LegalizeVectorTypes.cpp 874 //===--------------------------------------------------------------------===// 875 876 /// Given a processed vector Op which was widened into a larger vector, this 877 /// method returns the larger vector. The elements of the returned vector 878 /// consist of the elements of Op followed by elements containing rubbish. 879 /// For example, if Op is a v2i32 that was widened to a v4i32, then this 880 /// method returns a v4i32 for which the first two elements are the same as 881 /// those of Op, while the last two elements contain rubbish. GetWidenedVector(SDValue Op)882 SDValue GetWidenedVector(SDValue Op) { 883 TableId &WidenedId = WidenedVectors[getTableId(Op)]; 884 SDValue WidenedOp = getSDValue(WidenedId); 885 assert(WidenedOp.getNode() && "Operand wasn't widened?"); 886 return WidenedOp; 887 } 888 void SetWidenedVector(SDValue Op, SDValue Result); 889 890 // Widen Vector Result Promotion. 891 void WidenVectorResult(SDNode *N, unsigned ResNo); 892 SDValue WidenVecRes_MERGE_VALUES(SDNode* N, unsigned ResNo); 893 SDValue WidenVecRes_BITCAST(SDNode* N); 894 SDValue WidenVecRes_BUILD_VECTOR(SDNode* N); 895 SDValue WidenVecRes_CONCAT_VECTORS(SDNode* N); 896 SDValue WidenVecRes_EXTEND_VECTOR_INREG(SDNode* N); 897 SDValue WidenVecRes_EXTRACT_SUBVECTOR(SDNode* N); 898 SDValue WidenVecRes_INSERT_VECTOR_ELT(SDNode* N); 899 SDValue WidenVecRes_LOAD(SDNode* N); 900 SDValue WidenVecRes_MLOAD(MaskedLoadSDNode* N); 901 SDValue WidenVecRes_MGATHER(MaskedGatherSDNode* N); 902 SDValue WidenVecRes_ScalarOp(SDNode* N); 903 SDValue WidenVecRes_SELECT(SDNode* N); 904 SDValue WidenVSELECTMask(SDNode *N); 905 SDValue WidenVecRes_SELECT_CC(SDNode* N); 906 SDValue WidenVecRes_SETCC(SDNode* N); 907 SDValue WidenVecRes_STRICT_FSETCC(SDNode* N); 908 SDValue WidenVecRes_UNDEF(SDNode *N); 909 SDValue WidenVecRes_VECTOR_SHUFFLE(ShuffleVectorSDNode *N); 910 911 SDValue WidenVecRes_Ternary(SDNode *N); 912 SDValue WidenVecRes_Binary(SDNode *N); 913 SDValue WidenVecRes_BinaryCanTrap(SDNode *N); 914 SDValue WidenVecRes_BinaryWithExtraScalarOp(SDNode *N); 915 SDValue WidenVecRes_StrictFP(SDNode *N); 916 SDValue WidenVecRes_OverflowOp(SDNode *N, unsigned ResNo); 917 SDValue WidenVecRes_Convert(SDNode *N); 918 SDValue WidenVecRes_Convert_StrictFP(SDNode *N); 919 SDValue WidenVecRes_FP_TO_XINT_SAT(SDNode *N); 920 SDValue WidenVecRes_FCOPYSIGN(SDNode *N); 921 SDValue WidenVecRes_POWI(SDNode *N); 922 SDValue WidenVecRes_Unary(SDNode *N); 923 SDValue WidenVecRes_InregOp(SDNode *N); 924 925 // Widen Vector Operand. 926 bool WidenVectorOperand(SDNode *N, unsigned OpNo); 927 SDValue WidenVecOp_BITCAST(SDNode *N); 928 SDValue WidenVecOp_CONCAT_VECTORS(SDNode *N); 929 SDValue WidenVecOp_EXTEND(SDNode *N); 930 SDValue WidenVecOp_EXTRACT_VECTOR_ELT(SDNode *N); 931 SDValue WidenVecOp_INSERT_SUBVECTOR(SDNode *N); 932 SDValue WidenVecOp_EXTRACT_SUBVECTOR(SDNode *N); 933 SDValue WidenVecOp_STORE(SDNode* N); 934 SDValue WidenVecOp_MSTORE(SDNode* N, unsigned OpNo); 935 SDValue WidenVecOp_MGATHER(SDNode* N, unsigned OpNo); 936 SDValue WidenVecOp_MSCATTER(SDNode* N, unsigned OpNo); 937 SDValue WidenVecOp_SETCC(SDNode* N); 938 SDValue WidenVecOp_STRICT_FSETCC(SDNode* N); 939 SDValue WidenVecOp_VSELECT(SDNode *N); 940 941 SDValue WidenVecOp_Convert(SDNode *N); 942 SDValue WidenVecOp_FP_TO_XINT_SAT(SDNode *N); 943 SDValue WidenVecOp_FCOPYSIGN(SDNode *N); 944 SDValue WidenVecOp_VECREDUCE(SDNode *N); 945 SDValue WidenVecOp_VECREDUCE_SEQ(SDNode *N); 946 947 /// Helper function to generate a set of operations to perform 948 /// a vector operation for a wider type. 949 /// 950 SDValue UnrollVectorOp_StrictFP(SDNode *N, unsigned ResNE); 951 952 //===--------------------------------------------------------------------===// 953 // Vector Widening Utilities Support: LegalizeVectorTypes.cpp 954 //===--------------------------------------------------------------------===// 955 956 /// Helper function to generate a set of loads to load a vector with a 957 /// resulting wider type. It takes: 958 /// LdChain: list of chains for the load to be generated. 959 /// Ld: load to widen 960 SDValue GenWidenVectorLoads(SmallVectorImpl<SDValue> &LdChain, 961 LoadSDNode *LD); 962 963 /// Helper function to generate a set of extension loads to load a vector with 964 /// a resulting wider type. It takes: 965 /// LdChain: list of chains for the load to be generated. 966 /// Ld: load to widen 967 /// ExtType: extension element type 968 SDValue GenWidenVectorExtLoads(SmallVectorImpl<SDValue> &LdChain, 969 LoadSDNode *LD, ISD::LoadExtType ExtType); 970 971 /// Helper function to generate a set of stores to store a widen vector into 972 /// non-widen memory. 973 /// StChain: list of chains for the stores we have generated 974 /// ST: store of a widen value 975 void GenWidenVectorStores(SmallVectorImpl<SDValue> &StChain, StoreSDNode *ST); 976 977 /// Modifies a vector input (widen or narrows) to a vector of NVT. The 978 /// input vector must have the same element type as NVT. 979 /// When FillWithZeroes is "on" the vector will be widened with zeroes. 980 /// By default, the vector will be widened with undefined values. 981 SDValue ModifyToType(SDValue InOp, EVT NVT, bool FillWithZeroes = false); 982 983 /// Return a mask of vector type MaskVT to replace InMask. Also adjust 984 /// MaskVT to ToMaskVT if needed with vector extension or truncation. 985 SDValue convertMask(SDValue InMask, EVT MaskVT, EVT ToMaskVT); 986 987 //===--------------------------------------------------------------------===// 988 // Generic Splitting: LegalizeTypesGeneric.cpp 989 //===--------------------------------------------------------------------===// 990 991 // Legalization methods which only use that the illegal type is split into two 992 // not necessarily identical types. As such they can be used for splitting 993 // vectors and expanding integers and floats. 994 GetSplitOp(SDValue Op,SDValue & Lo,SDValue & Hi)995 void GetSplitOp(SDValue Op, SDValue &Lo, SDValue &Hi) { 996 if (Op.getValueType().isVector()) 997 GetSplitVector(Op, Lo, Hi); 998 else if (Op.getValueType().isInteger()) 999 GetExpandedInteger(Op, Lo, Hi); 1000 else 1001 GetExpandedFloat(Op, Lo, Hi); 1002 } 1003 1004 /// Use ISD::EXTRACT_ELEMENT nodes to extract the low and high parts of the 1005 /// given value. 1006 void GetPairElements(SDValue Pair, SDValue &Lo, SDValue &Hi); 1007 1008 // Generic Result Splitting. 1009 void SplitRes_MERGE_VALUES(SDNode *N, unsigned ResNo, 1010 SDValue &Lo, SDValue &Hi); 1011 void SplitRes_SELECT (SDNode *N, SDValue &Lo, SDValue &Hi); 1012 void SplitRes_SELECT_CC (SDNode *N, SDValue &Lo, SDValue &Hi); 1013 void SplitRes_UNDEF (SDNode *N, SDValue &Lo, SDValue &Hi); 1014 void SplitRes_FREEZE (SDNode *N, SDValue &Lo, SDValue &Hi); 1015 1016 //===--------------------------------------------------------------------===// 1017 // Generic Expansion: LegalizeTypesGeneric.cpp 1018 //===--------------------------------------------------------------------===// 1019 1020 // Legalization methods which only use that the illegal type is split into two 1021 // identical types of half the size, and that the Lo/Hi part is stored first 1022 // in memory on little/big-endian machines, followed by the Hi/Lo part. As 1023 // such they can be used for expanding integers and floats. 1024 GetExpandedOp(SDValue Op,SDValue & Lo,SDValue & Hi)1025 void GetExpandedOp(SDValue Op, SDValue &Lo, SDValue &Hi) { 1026 if (Op.getValueType().isInteger()) 1027 GetExpandedInteger(Op, Lo, Hi); 1028 else 1029 GetExpandedFloat(Op, Lo, Hi); 1030 } 1031 1032 1033 /// This function will split the integer \p Op into \p NumElements 1034 /// operations of type \p EltVT and store them in \p Ops. 1035 void IntegerToVector(SDValue Op, unsigned NumElements, 1036 SmallVectorImpl<SDValue> &Ops, EVT EltVT); 1037 1038 // Generic Result Expansion. 1039 void ExpandRes_MERGE_VALUES (SDNode *N, unsigned ResNo, 1040 SDValue &Lo, SDValue &Hi); 1041 void ExpandRes_BITCAST (SDNode *N, SDValue &Lo, SDValue &Hi); 1042 void ExpandRes_BUILD_PAIR (SDNode *N, SDValue &Lo, SDValue &Hi); 1043 void ExpandRes_EXTRACT_ELEMENT (SDNode *N, SDValue &Lo, SDValue &Hi); 1044 void ExpandRes_EXTRACT_VECTOR_ELT(SDNode *N, SDValue &Lo, SDValue &Hi); 1045 void ExpandRes_NormalLoad (SDNode *N, SDValue &Lo, SDValue &Hi); 1046 void ExpandRes_VAARG (SDNode *N, SDValue &Lo, SDValue &Hi); 1047 1048 // Generic Operand Expansion. 1049 SDValue ExpandOp_BITCAST (SDNode *N); 1050 SDValue ExpandOp_BUILD_VECTOR (SDNode *N); 1051 SDValue ExpandOp_EXTRACT_ELEMENT (SDNode *N); 1052 SDValue ExpandOp_INSERT_VECTOR_ELT(SDNode *N); 1053 SDValue ExpandOp_SCALAR_TO_VECTOR (SDNode *N); 1054 SDValue ExpandOp_NormalStore (SDNode *N, unsigned OpNo); 1055 }; 1056 1057 } // end namespace llvm. 1058 1059 #endif 1060