LegalizeTypes.h revision 360784
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 24namespace 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/// 31class LLVM_LIBRARY_VISIBILITY DAGTypeLegalizer { 32 const TargetLowering &TLI; 33 SelectionDAG &DAG; 34public: 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 }; 54private: 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. 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. 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. 72 bool isSimpleLegalType(EVT VT) const { 73 return VT.isSimple() && TLI.isTypeLegal(VT); 74 } 75 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. 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 float nodes that need to be expanded this map indicates which operands 113 /// are the expanded version of the input. 114 SmallDenseMap<TableId, std::pair<TableId, TableId>, 8> ExpandedFloats; 115 116 /// For nodes that are <1 x ty>, this map indicates the scalar value of type 117 /// 'ty' to use. 118 SmallDenseMap<TableId, TableId, 8> ScalarizedVectors; 119 120 /// For nodes that need to be split this map indicates which operands are the 121 /// expanded version of the input. 122 SmallDenseMap<TableId, std::pair<TableId, TableId>, 8> SplitVectors; 123 124 /// For vector nodes that need to be widened, indicates the widened value to 125 /// use. 126 SmallDenseMap<TableId, TableId, 8> WidenedVectors; 127 128 /// For values that have been replaced with another, indicates the replacement 129 /// value to use. 130 SmallDenseMap<TableId, TableId, 8> ReplacedValues; 131 132 /// This defines a worklist of nodes to process. In order to be pushed onto 133 /// this worklist, all operands of a node must have already been processed. 134 SmallVector<SDNode*, 128> Worklist; 135 136 TableId getTableId(SDValue V) { 137 assert(V.getNode() && "Getting TableId on SDValue()"); 138 139 auto I = ValueToIdMap.find(V); 140 if (I != ValueToIdMap.end()) { 141 // replace if there's been a shift. 142 RemapId(I->second); 143 assert(I->second && "All Ids should be nonzero"); 144 return I->second; 145 } 146 // Add if it's not there. 147 ValueToIdMap.insert(std::make_pair(V, NextValueId)); 148 IdToValueMap.insert(std::make_pair(NextValueId, V)); 149 ++NextValueId; 150 assert(NextValueId != 0 && 151 "Ran out of Ids. Increase id type size or add compactification"); 152 return NextValueId - 1; 153 } 154 155 const SDValue &getSDValue(TableId &Id) { 156 RemapId(Id); 157 assert(Id && "TableId should be non-zero"); 158 return IdToValueMap[Id]; 159 } 160 161public: 162 explicit DAGTypeLegalizer(SelectionDAG &dag) 163 : TLI(dag.getTargetLoweringInfo()), DAG(dag), 164 ValueTypeActions(TLI.getValueTypeActions()) { 165 static_assert(MVT::LAST_VALUETYPE <= MVT::MAX_ALLOWED_VALUETYPE, 166 "Too many value types for ValueTypeActions to hold!"); 167 } 168 169 /// This is the main entry point for the type legalizer. This does a 170 /// top-down traversal of the dag, legalizing types as it goes. Returns 171 /// "true" if it made any changes. 172 bool run(); 173 174 void NoteDeletion(SDNode *Old, SDNode *New) { 175 for (unsigned i = 0, e = Old->getNumValues(); i != e; ++i) { 176 TableId NewId = getTableId(SDValue(New, i)); 177 TableId OldId = getTableId(SDValue(Old, i)); 178 179 if (OldId != NewId) 180 ReplacedValues[OldId] = NewId; 181 182 // Delete Node from tables. 183 ValueToIdMap.erase(SDValue(Old, i)); 184 IdToValueMap.erase(OldId); 185 PromotedIntegers.erase(OldId); 186 ExpandedIntegers.erase(OldId); 187 SoftenedFloats.erase(OldId); 188 PromotedFloats.erase(OldId); 189 ExpandedFloats.erase(OldId); 190 ScalarizedVectors.erase(OldId); 191 SplitVectors.erase(OldId); 192 WidenedVectors.erase(OldId); 193 } 194 } 195 196 SelectionDAG &getDAG() const { return DAG; } 197 198private: 199 SDNode *AnalyzeNewNode(SDNode *N); 200 void AnalyzeNewValue(SDValue &Val); 201 void PerformExpensiveChecks(); 202 void RemapId(TableId &Id); 203 void RemapValue(SDValue &V); 204 205 // Common routines. 206 SDValue BitConvertToInteger(SDValue Op); 207 SDValue BitConvertVectorToIntegerVector(SDValue Op); 208 SDValue CreateStackStoreLoad(SDValue Op, EVT DestVT); 209 bool CustomLowerNode(SDNode *N, EVT VT, bool LegalizeResult); 210 bool CustomWidenLowerNode(SDNode *N, EVT VT); 211 212 /// Replace each result of the given MERGE_VALUES node with the corresponding 213 /// input operand, except for the result 'ResNo', for which the corresponding 214 /// input operand is returned. 215 SDValue DisintegrateMERGE_VALUES(SDNode *N, unsigned ResNo); 216 217 SDValue JoinIntegers(SDValue Lo, SDValue Hi); 218 219 std::pair<SDValue, SDValue> ExpandAtomic(SDNode *Node); 220 221 SDValue PromoteTargetBoolean(SDValue Bool, EVT ValVT); 222 223 void ReplaceValueWith(SDValue From, SDValue To); 224 void SplitInteger(SDValue Op, SDValue &Lo, SDValue &Hi); 225 void SplitInteger(SDValue Op, EVT LoVT, EVT HiVT, 226 SDValue &Lo, SDValue &Hi); 227 228 //===--------------------------------------------------------------------===// 229 // Integer Promotion Support: LegalizeIntegerTypes.cpp 230 //===--------------------------------------------------------------------===// 231 232 /// Given a processed operand Op which was promoted to a larger integer type, 233 /// this returns the promoted value. The low bits of the promoted value 234 /// corresponding to the original type are exactly equal to Op. 235 /// The extra bits contain rubbish, so the promoted value may need to be zero- 236 /// or sign-extended from the original type before it is usable (the helpers 237 /// SExtPromotedInteger and ZExtPromotedInteger can do this for you). 238 /// For example, if Op is an i16 and was promoted to an i32, then this method 239 /// returns an i32, the lower 16 bits of which coincide with Op, and the upper 240 /// 16 bits of which contain rubbish. 241 SDValue GetPromotedInteger(SDValue Op) { 242 TableId &PromotedId = PromotedIntegers[getTableId(Op)]; 243 SDValue PromotedOp = getSDValue(PromotedId); 244 assert(PromotedOp.getNode() && "Operand wasn't promoted?"); 245 return PromotedOp; 246 } 247 void SetPromotedInteger(SDValue Op, SDValue Result); 248 249 /// Get a promoted operand and sign extend it to the final size. 250 SDValue SExtPromotedInteger(SDValue Op) { 251 EVT OldVT = Op.getValueType(); 252 SDLoc dl(Op); 253 Op = GetPromotedInteger(Op); 254 return DAG.getNode(ISD::SIGN_EXTEND_INREG, dl, Op.getValueType(), Op, 255 DAG.getValueType(OldVT)); 256 } 257 258 /// Get a promoted operand and zero extend it to the final size. 259 SDValue ZExtPromotedInteger(SDValue Op) { 260 EVT OldVT = Op.getValueType(); 261 SDLoc dl(Op); 262 Op = GetPromotedInteger(Op); 263 return DAG.getZeroExtendInReg(Op, dl, OldVT.getScalarType()); 264 } 265 266 // Get a promoted operand and sign or zero extend it to the final size 267 // (depending on TargetLoweringInfo::isSExtCheaperThanZExt). For a given 268 // subtarget and type, the choice of sign or zero-extension will be 269 // consistent. 270 SDValue SExtOrZExtPromotedInteger(SDValue Op) { 271 EVT OldVT = Op.getValueType(); 272 SDLoc DL(Op); 273 Op = GetPromotedInteger(Op); 274 if (TLI.isSExtCheaperThanZExt(OldVT, Op.getValueType())) 275 return DAG.getNode(ISD::SIGN_EXTEND_INREG, DL, Op.getValueType(), Op, 276 DAG.getValueType(OldVT)); 277 return DAG.getZeroExtendInReg(Op, DL, OldVT.getScalarType()); 278 } 279 280 // Integer Result Promotion. 281 void PromoteIntegerResult(SDNode *N, unsigned ResNo); 282 SDValue PromoteIntRes_MERGE_VALUES(SDNode *N, unsigned ResNo); 283 SDValue PromoteIntRes_AssertSext(SDNode *N); 284 SDValue PromoteIntRes_AssertZext(SDNode *N); 285 SDValue PromoteIntRes_Atomic0(AtomicSDNode *N); 286 SDValue PromoteIntRes_Atomic1(AtomicSDNode *N); 287 SDValue PromoteIntRes_AtomicCmpSwap(AtomicSDNode *N, unsigned ResNo); 288 SDValue PromoteIntRes_EXTRACT_SUBVECTOR(SDNode *N); 289 SDValue PromoteIntRes_VECTOR_SHUFFLE(SDNode *N); 290 SDValue PromoteIntRes_BUILD_VECTOR(SDNode *N); 291 SDValue PromoteIntRes_SCALAR_TO_VECTOR(SDNode *N); 292 SDValue PromoteIntRes_SPLAT_VECTOR(SDNode *N); 293 SDValue PromoteIntRes_EXTEND_VECTOR_INREG(SDNode *N); 294 SDValue PromoteIntRes_INSERT_VECTOR_ELT(SDNode *N); 295 SDValue PromoteIntRes_CONCAT_VECTORS(SDNode *N); 296 SDValue PromoteIntRes_BITCAST(SDNode *N); 297 SDValue PromoteIntRes_BSWAP(SDNode *N); 298 SDValue PromoteIntRes_BITREVERSE(SDNode *N); 299 SDValue PromoteIntRes_BUILD_PAIR(SDNode *N); 300 SDValue PromoteIntRes_Constant(SDNode *N); 301 SDValue PromoteIntRes_CTLZ(SDNode *N); 302 SDValue PromoteIntRes_CTPOP(SDNode *N); 303 SDValue PromoteIntRes_CTTZ(SDNode *N); 304 SDValue PromoteIntRes_EXTRACT_VECTOR_ELT(SDNode *N); 305 SDValue PromoteIntRes_FP_TO_XINT(SDNode *N); 306 SDValue PromoteIntRes_FP_TO_FP16(SDNode *N); 307 SDValue PromoteIntRes_INT_EXTEND(SDNode *N); 308 SDValue PromoteIntRes_LOAD(LoadSDNode *N); 309 SDValue PromoteIntRes_MLOAD(MaskedLoadSDNode *N); 310 SDValue PromoteIntRes_MGATHER(MaskedGatherSDNode *N); 311 SDValue PromoteIntRes_Overflow(SDNode *N); 312 SDValue PromoteIntRes_SADDSUBO(SDNode *N, unsigned ResNo); 313 SDValue PromoteIntRes_SELECT(SDNode *N); 314 SDValue PromoteIntRes_VSELECT(SDNode *N); 315 SDValue PromoteIntRes_SELECT_CC(SDNode *N); 316 SDValue PromoteIntRes_SETCC(SDNode *N); 317 SDValue PromoteIntRes_SHL(SDNode *N); 318 SDValue PromoteIntRes_SimpleIntBinOp(SDNode *N); 319 SDValue PromoteIntRes_ZExtIntBinOp(SDNode *N); 320 SDValue PromoteIntRes_SExtIntBinOp(SDNode *N); 321 SDValue PromoteIntRes_SIGN_EXTEND_INREG(SDNode *N); 322 SDValue PromoteIntRes_SRA(SDNode *N); 323 SDValue PromoteIntRes_SRL(SDNode *N); 324 SDValue PromoteIntRes_TRUNCATE(SDNode *N); 325 SDValue PromoteIntRes_UADDSUBO(SDNode *N, unsigned ResNo); 326 SDValue PromoteIntRes_ADDSUBCARRY(SDNode *N, unsigned ResNo); 327 SDValue PromoteIntRes_UNDEF(SDNode *N); 328 SDValue PromoteIntRes_VAARG(SDNode *N); 329 SDValue PromoteIntRes_XMULO(SDNode *N, unsigned ResNo); 330 SDValue PromoteIntRes_ADDSUBSAT(SDNode *N); 331 SDValue PromoteIntRes_MULFIX(SDNode *N); 332 SDValue PromoteIntRes_DIVFIX(SDNode *N); 333 SDValue PromoteIntRes_FLT_ROUNDS(SDNode *N); 334 SDValue PromoteIntRes_VECREDUCE(SDNode *N); 335 SDValue PromoteIntRes_ABS(SDNode *N); 336 337 // Integer Operand Promotion. 338 bool PromoteIntegerOperand(SDNode *N, unsigned OpNo); 339 SDValue PromoteIntOp_ANY_EXTEND(SDNode *N); 340 SDValue PromoteIntOp_ATOMIC_STORE(AtomicSDNode *N); 341 SDValue PromoteIntOp_BITCAST(SDNode *N); 342 SDValue PromoteIntOp_BUILD_PAIR(SDNode *N); 343 SDValue PromoteIntOp_BR_CC(SDNode *N, unsigned OpNo); 344 SDValue PromoteIntOp_BRCOND(SDNode *N, unsigned OpNo); 345 SDValue PromoteIntOp_BUILD_VECTOR(SDNode *N); 346 SDValue PromoteIntOp_INSERT_VECTOR_ELT(SDNode *N, unsigned OpNo); 347 SDValue PromoteIntOp_EXTRACT_VECTOR_ELT(SDNode *N); 348 SDValue PromoteIntOp_EXTRACT_SUBVECTOR(SDNode *N); 349 SDValue PromoteIntOp_CONCAT_VECTORS(SDNode *N); 350 SDValue PromoteIntOp_SCALAR_TO_VECTOR(SDNode *N); 351 SDValue PromoteIntOp_SPLAT_VECTOR(SDNode *N); 352 SDValue PromoteIntOp_SELECT(SDNode *N, unsigned OpNo); 353 SDValue PromoteIntOp_SELECT_CC(SDNode *N, unsigned OpNo); 354 SDValue PromoteIntOp_SETCC(SDNode *N, unsigned OpNo); 355 SDValue PromoteIntOp_Shift(SDNode *N); 356 SDValue PromoteIntOp_SIGN_EXTEND(SDNode *N); 357 SDValue PromoteIntOp_SINT_TO_FP(SDNode *N); 358 SDValue PromoteIntOp_STRICT_SINT_TO_FP(SDNode *N); 359 SDValue PromoteIntOp_STORE(StoreSDNode *N, unsigned OpNo); 360 SDValue PromoteIntOp_TRUNCATE(SDNode *N); 361 SDValue PromoteIntOp_UINT_TO_FP(SDNode *N); 362 SDValue PromoteIntOp_STRICT_UINT_TO_FP(SDNode *N); 363 SDValue PromoteIntOp_ZERO_EXTEND(SDNode *N); 364 SDValue PromoteIntOp_MSTORE(MaskedStoreSDNode *N, unsigned OpNo); 365 SDValue PromoteIntOp_MLOAD(MaskedLoadSDNode *N, unsigned OpNo); 366 SDValue PromoteIntOp_MSCATTER(MaskedScatterSDNode *N, unsigned OpNo); 367 SDValue PromoteIntOp_MGATHER(MaskedGatherSDNode *N, unsigned OpNo); 368 SDValue PromoteIntOp_ADDSUBCARRY(SDNode *N, unsigned OpNo); 369 SDValue PromoteIntOp_FRAMERETURNADDR(SDNode *N); 370 SDValue PromoteIntOp_PREFETCH(SDNode *N, unsigned OpNo); 371 SDValue PromoteIntOp_FIX(SDNode *N); 372 SDValue PromoteIntOp_FPOWI(SDNode *N); 373 SDValue PromoteIntOp_VECREDUCE(SDNode *N); 374 375 void PromoteSetCCOperands(SDValue &LHS,SDValue &RHS, ISD::CondCode Code); 376 377 //===--------------------------------------------------------------------===// 378 // Integer Expansion Support: LegalizeIntegerTypes.cpp 379 //===--------------------------------------------------------------------===// 380 381 /// Given a processed operand Op which was expanded into two integers of half 382 /// the size, this returns the two halves. The low bits of Op are exactly 383 /// equal to the bits of Lo; the high bits exactly equal Hi. 384 /// For example, if Op is an i64 which was expanded into two i32's, then this 385 /// method returns the two i32's, with Lo being equal to the lower 32 bits of 386 /// Op, and Hi being equal to the upper 32 bits. 387 void GetExpandedInteger(SDValue Op, SDValue &Lo, SDValue &Hi); 388 void SetExpandedInteger(SDValue Op, SDValue Lo, SDValue Hi); 389 390 // Integer Result Expansion. 391 void ExpandIntegerResult(SDNode *N, unsigned ResNo); 392 void ExpandIntRes_ANY_EXTEND (SDNode *N, SDValue &Lo, SDValue &Hi); 393 void ExpandIntRes_AssertSext (SDNode *N, SDValue &Lo, SDValue &Hi); 394 void ExpandIntRes_AssertZext (SDNode *N, SDValue &Lo, SDValue &Hi); 395 void ExpandIntRes_Constant (SDNode *N, SDValue &Lo, SDValue &Hi); 396 void ExpandIntRes_ABS (SDNode *N, SDValue &Lo, SDValue &Hi); 397 void ExpandIntRes_CTLZ (SDNode *N, SDValue &Lo, SDValue &Hi); 398 void ExpandIntRes_CTPOP (SDNode *N, SDValue &Lo, SDValue &Hi); 399 void ExpandIntRes_CTTZ (SDNode *N, SDValue &Lo, SDValue &Hi); 400 void ExpandIntRes_LOAD (LoadSDNode *N, SDValue &Lo, SDValue &Hi); 401 void ExpandIntRes_READCYCLECOUNTER (SDNode *N, SDValue &Lo, SDValue &Hi); 402 void ExpandIntRes_SIGN_EXTEND (SDNode *N, SDValue &Lo, SDValue &Hi); 403 void ExpandIntRes_SIGN_EXTEND_INREG (SDNode *N, SDValue &Lo, SDValue &Hi); 404 void ExpandIntRes_TRUNCATE (SDNode *N, SDValue &Lo, SDValue &Hi); 405 void ExpandIntRes_ZERO_EXTEND (SDNode *N, SDValue &Lo, SDValue &Hi); 406 void ExpandIntRes_FLT_ROUNDS (SDNode *N, SDValue &Lo, SDValue &Hi); 407 void ExpandIntRes_FP_TO_SINT (SDNode *N, SDValue &Lo, SDValue &Hi); 408 void ExpandIntRes_FP_TO_UINT (SDNode *N, SDValue &Lo, SDValue &Hi); 409 void ExpandIntRes_LLROUND_LLRINT (SDNode *N, SDValue &Lo, SDValue &Hi); 410 411 void ExpandIntRes_Logical (SDNode *N, SDValue &Lo, SDValue &Hi); 412 void ExpandIntRes_ADDSUB (SDNode *N, SDValue &Lo, SDValue &Hi); 413 void ExpandIntRes_ADDSUBC (SDNode *N, SDValue &Lo, SDValue &Hi); 414 void ExpandIntRes_ADDSUBE (SDNode *N, SDValue &Lo, SDValue &Hi); 415 void ExpandIntRes_ADDSUBCARRY (SDNode *N, SDValue &Lo, SDValue &Hi); 416 void ExpandIntRes_BITREVERSE (SDNode *N, SDValue &Lo, SDValue &Hi); 417 void ExpandIntRes_BSWAP (SDNode *N, SDValue &Lo, SDValue &Hi); 418 void ExpandIntRes_MUL (SDNode *N, SDValue &Lo, SDValue &Hi); 419 void ExpandIntRes_SDIV (SDNode *N, SDValue &Lo, SDValue &Hi); 420 void ExpandIntRes_SREM (SDNode *N, SDValue &Lo, SDValue &Hi); 421 void ExpandIntRes_UDIV (SDNode *N, SDValue &Lo, SDValue &Hi); 422 void ExpandIntRes_UREM (SDNode *N, SDValue &Lo, SDValue &Hi); 423 void ExpandIntRes_Shift (SDNode *N, SDValue &Lo, SDValue &Hi); 424 425 void ExpandIntRes_MINMAX (SDNode *N, SDValue &Lo, SDValue &Hi); 426 427 void ExpandIntRes_SADDSUBO (SDNode *N, SDValue &Lo, SDValue &Hi); 428 void ExpandIntRes_UADDSUBO (SDNode *N, SDValue &Lo, SDValue &Hi); 429 void ExpandIntRes_XMULO (SDNode *N, SDValue &Lo, SDValue &Hi); 430 void ExpandIntRes_ADDSUBSAT (SDNode *N, SDValue &Lo, SDValue &Hi); 431 void ExpandIntRes_MULFIX (SDNode *N, SDValue &Lo, SDValue &Hi); 432 void ExpandIntRes_DIVFIX (SDNode *N, SDValue &Lo, SDValue &Hi); 433 434 void ExpandIntRes_ATOMIC_LOAD (SDNode *N, SDValue &Lo, SDValue &Hi); 435 void ExpandIntRes_VECREDUCE (SDNode *N, SDValue &Lo, SDValue &Hi); 436 437 void ExpandShiftByConstant(SDNode *N, const APInt &Amt, 438 SDValue &Lo, SDValue &Hi); 439 bool ExpandShiftWithKnownAmountBit(SDNode *N, SDValue &Lo, SDValue &Hi); 440 bool ExpandShiftWithUnknownAmountBit(SDNode *N, SDValue &Lo, SDValue &Hi); 441 442 // Integer Operand Expansion. 443 bool ExpandIntegerOperand(SDNode *N, unsigned OpNo); 444 SDValue ExpandIntOp_BR_CC(SDNode *N); 445 SDValue ExpandIntOp_SELECT_CC(SDNode *N); 446 SDValue ExpandIntOp_SETCC(SDNode *N); 447 SDValue ExpandIntOp_SETCCCARRY(SDNode *N); 448 SDValue ExpandIntOp_Shift(SDNode *N); 449 SDValue ExpandIntOp_SINT_TO_FP(SDNode *N); 450 SDValue ExpandIntOp_STORE(StoreSDNode *N, unsigned OpNo); 451 SDValue ExpandIntOp_TRUNCATE(SDNode *N); 452 SDValue ExpandIntOp_UINT_TO_FP(SDNode *N); 453 SDValue ExpandIntOp_RETURNADDR(SDNode *N); 454 SDValue ExpandIntOp_ATOMIC_STORE(SDNode *N); 455 456 void IntegerExpandSetCCOperands(SDValue &NewLHS, SDValue &NewRHS, 457 ISD::CondCode &CCCode, const SDLoc &dl); 458 459 //===--------------------------------------------------------------------===// 460 // Float to Integer Conversion Support: LegalizeFloatTypes.cpp 461 //===--------------------------------------------------------------------===// 462 463 /// GetSoftenedFloat - Given a processed operand Op which was converted to an 464 /// integer of the same size, this returns the integer. The integer contains 465 /// exactly the same bits as Op - only the type changed. For example, if Op 466 /// is an f32 which was softened to an i32, then this method returns an i32, 467 /// the bits of which coincide with those of Op 468 SDValue GetSoftenedFloat(SDValue Op) { 469 TableId Id = getTableId(Op); 470 auto Iter = SoftenedFloats.find(Id); 471 if (Iter == SoftenedFloats.end()) { 472 assert(isSimpleLegalType(Op.getValueType()) && 473 "Operand wasn't converted to integer?"); 474 return Op; 475 } 476 SDValue SoftenedOp = getSDValue(Iter->second); 477 assert(SoftenedOp.getNode() && "Unconverted op in SoftenedFloats?"); 478 return SoftenedOp; 479 } 480 void SetSoftenedFloat(SDValue Op, SDValue Result); 481 482 // Convert Float Results to Integer. 483 void SoftenFloatResult(SDNode *N, unsigned ResNo); 484 SDValue SoftenFloatRes_Unary(SDNode *N, RTLIB::Libcall LC); 485 SDValue SoftenFloatRes_Binary(SDNode *N, RTLIB::Libcall LC); 486 SDValue SoftenFloatRes_MERGE_VALUES(SDNode *N, unsigned ResNo); 487 SDValue SoftenFloatRes_BITCAST(SDNode *N); 488 SDValue SoftenFloatRes_BUILD_PAIR(SDNode *N); 489 SDValue SoftenFloatRes_ConstantFP(SDNode *N); 490 SDValue SoftenFloatRes_EXTRACT_VECTOR_ELT(SDNode *N, unsigned ResNo); 491 SDValue SoftenFloatRes_FABS(SDNode *N); 492 SDValue SoftenFloatRes_FMINNUM(SDNode *N); 493 SDValue SoftenFloatRes_FMAXNUM(SDNode *N); 494 SDValue SoftenFloatRes_FADD(SDNode *N); 495 SDValue SoftenFloatRes_FCBRT(SDNode *N); 496 SDValue SoftenFloatRes_FCEIL(SDNode *N); 497 SDValue SoftenFloatRes_FCOPYSIGN(SDNode *N); 498 SDValue SoftenFloatRes_FCOS(SDNode *N); 499 SDValue SoftenFloatRes_FDIV(SDNode *N); 500 SDValue SoftenFloatRes_FEXP(SDNode *N); 501 SDValue SoftenFloatRes_FEXP2(SDNode *N); 502 SDValue SoftenFloatRes_FFLOOR(SDNode *N); 503 SDValue SoftenFloatRes_FLOG(SDNode *N); 504 SDValue SoftenFloatRes_FLOG2(SDNode *N); 505 SDValue SoftenFloatRes_FLOG10(SDNode *N); 506 SDValue SoftenFloatRes_FMA(SDNode *N); 507 SDValue SoftenFloatRes_FMUL(SDNode *N); 508 SDValue SoftenFloatRes_FNEARBYINT(SDNode *N); 509 SDValue SoftenFloatRes_FNEG(SDNode *N); 510 SDValue SoftenFloatRes_FP_EXTEND(SDNode *N); 511 SDValue SoftenFloatRes_FP16_TO_FP(SDNode *N); 512 SDValue SoftenFloatRes_FP_ROUND(SDNode *N); 513 SDValue SoftenFloatRes_FPOW(SDNode *N); 514 SDValue SoftenFloatRes_FPOWI(SDNode *N); 515 SDValue SoftenFloatRes_FREM(SDNode *N); 516 SDValue SoftenFloatRes_FRINT(SDNode *N); 517 SDValue SoftenFloatRes_FROUND(SDNode *N); 518 SDValue SoftenFloatRes_FSIN(SDNode *N); 519 SDValue SoftenFloatRes_FSQRT(SDNode *N); 520 SDValue SoftenFloatRes_FSUB(SDNode *N); 521 SDValue SoftenFloatRes_FTRUNC(SDNode *N); 522 SDValue SoftenFloatRes_LOAD(SDNode *N); 523 SDValue SoftenFloatRes_SELECT(SDNode *N); 524 SDValue SoftenFloatRes_SELECT_CC(SDNode *N); 525 SDValue SoftenFloatRes_UNDEF(SDNode *N); 526 SDValue SoftenFloatRes_VAARG(SDNode *N); 527 SDValue SoftenFloatRes_XINT_TO_FP(SDNode *N); 528 529 // Convert Float Operand to Integer. 530 bool SoftenFloatOperand(SDNode *N, unsigned OpNo); 531 SDValue SoftenFloatOp_Unary(SDNode *N, RTLIB::Libcall LC); 532 SDValue SoftenFloatOp_BITCAST(SDNode *N); 533 SDValue SoftenFloatOp_BR_CC(SDNode *N); 534 SDValue SoftenFloatOp_FP_ROUND(SDNode *N); 535 SDValue SoftenFloatOp_FP_TO_XINT(SDNode *N); 536 SDValue SoftenFloatOp_LROUND(SDNode *N); 537 SDValue SoftenFloatOp_LLROUND(SDNode *N); 538 SDValue SoftenFloatOp_LRINT(SDNode *N); 539 SDValue SoftenFloatOp_LLRINT(SDNode *N); 540 SDValue SoftenFloatOp_SELECT_CC(SDNode *N); 541 SDValue SoftenFloatOp_SETCC(SDNode *N); 542 SDValue SoftenFloatOp_STORE(SDNode *N, unsigned OpNo); 543 SDValue SoftenFloatOp_FCOPYSIGN(SDNode *N); 544 545 //===--------------------------------------------------------------------===// 546 // Float Expansion Support: LegalizeFloatTypes.cpp 547 //===--------------------------------------------------------------------===// 548 549 /// Given a processed operand Op which was expanded into two floating-point 550 /// values of half the size, this returns the two halves. 551 /// The low bits of Op are exactly equal to the bits of Lo; the high bits 552 /// exactly equal Hi. For example, if Op is a ppcf128 which was expanded 553 /// into two f64's, then this method returns the two f64's, with Lo being 554 /// equal to the lower 64 bits of Op, and Hi to the upper 64 bits. 555 void GetExpandedFloat(SDValue Op, SDValue &Lo, SDValue &Hi); 556 void SetExpandedFloat(SDValue Op, SDValue Lo, SDValue Hi); 557 558 // Float Result Expansion. 559 void ExpandFloatResult(SDNode *N, unsigned ResNo); 560 void ExpandFloatRes_ConstantFP(SDNode *N, SDValue &Lo, SDValue &Hi); 561 void ExpandFloatRes_Unary(SDNode *N, RTLIB::Libcall LC, 562 SDValue &Lo, SDValue &Hi); 563 void ExpandFloatRes_Binary(SDNode *N, RTLIB::Libcall LC, 564 SDValue &Lo, SDValue &Hi); 565 void ExpandFloatRes_FABS (SDNode *N, SDValue &Lo, SDValue &Hi); 566 void ExpandFloatRes_FMINNUM (SDNode *N, SDValue &Lo, SDValue &Hi); 567 void ExpandFloatRes_FMAXNUM (SDNode *N, SDValue &Lo, SDValue &Hi); 568 void ExpandFloatRes_FADD (SDNode *N, SDValue &Lo, SDValue &Hi); 569 void ExpandFloatRes_FCBRT (SDNode *N, SDValue &Lo, SDValue &Hi); 570 void ExpandFloatRes_FCEIL (SDNode *N, SDValue &Lo, SDValue &Hi); 571 void ExpandFloatRes_FCOPYSIGN (SDNode *N, SDValue &Lo, SDValue &Hi); 572 void ExpandFloatRes_FCOS (SDNode *N, SDValue &Lo, SDValue &Hi); 573 void ExpandFloatRes_FDIV (SDNode *N, SDValue &Lo, SDValue &Hi); 574 void ExpandFloatRes_FEXP (SDNode *N, SDValue &Lo, SDValue &Hi); 575 void ExpandFloatRes_FEXP2 (SDNode *N, SDValue &Lo, SDValue &Hi); 576 void ExpandFloatRes_FFLOOR (SDNode *N, SDValue &Lo, SDValue &Hi); 577 void ExpandFloatRes_FLOG (SDNode *N, SDValue &Lo, SDValue &Hi); 578 void ExpandFloatRes_FLOG2 (SDNode *N, SDValue &Lo, SDValue &Hi); 579 void ExpandFloatRes_FLOG10 (SDNode *N, SDValue &Lo, SDValue &Hi); 580 void ExpandFloatRes_FMA (SDNode *N, SDValue &Lo, SDValue &Hi); 581 void ExpandFloatRes_FMUL (SDNode *N, SDValue &Lo, SDValue &Hi); 582 void ExpandFloatRes_FNEARBYINT(SDNode *N, SDValue &Lo, SDValue &Hi); 583 void ExpandFloatRes_FNEG (SDNode *N, SDValue &Lo, SDValue &Hi); 584 void ExpandFloatRes_FP_EXTEND (SDNode *N, SDValue &Lo, SDValue &Hi); 585 void ExpandFloatRes_FPOW (SDNode *N, SDValue &Lo, SDValue &Hi); 586 void ExpandFloatRes_FPOWI (SDNode *N, SDValue &Lo, SDValue &Hi); 587 void ExpandFloatRes_FREM (SDNode *N, SDValue &Lo, SDValue &Hi); 588 void ExpandFloatRes_FRINT (SDNode *N, SDValue &Lo, SDValue &Hi); 589 void ExpandFloatRes_FROUND (SDNode *N, SDValue &Lo, SDValue &Hi); 590 void ExpandFloatRes_FSIN (SDNode *N, SDValue &Lo, SDValue &Hi); 591 void ExpandFloatRes_FSQRT (SDNode *N, SDValue &Lo, SDValue &Hi); 592 void ExpandFloatRes_FSUB (SDNode *N, SDValue &Lo, SDValue &Hi); 593 void ExpandFloatRes_FTRUNC (SDNode *N, SDValue &Lo, SDValue &Hi); 594 void ExpandFloatRes_LOAD (SDNode *N, SDValue &Lo, SDValue &Hi); 595 void ExpandFloatRes_XINT_TO_FP(SDNode *N, SDValue &Lo, SDValue &Hi); 596 597 // Float Operand Expansion. 598 bool ExpandFloatOperand(SDNode *N, unsigned OpNo); 599 SDValue ExpandFloatOp_BR_CC(SDNode *N); 600 SDValue ExpandFloatOp_FCOPYSIGN(SDNode *N); 601 SDValue ExpandFloatOp_FP_ROUND(SDNode *N); 602 SDValue ExpandFloatOp_FP_TO_SINT(SDNode *N); 603 SDValue ExpandFloatOp_FP_TO_UINT(SDNode *N); 604 SDValue ExpandFloatOp_LROUND(SDNode *N); 605 SDValue ExpandFloatOp_LLROUND(SDNode *N); 606 SDValue ExpandFloatOp_LRINT(SDNode *N); 607 SDValue ExpandFloatOp_LLRINT(SDNode *N); 608 SDValue ExpandFloatOp_SELECT_CC(SDNode *N); 609 SDValue ExpandFloatOp_SETCC(SDNode *N); 610 SDValue ExpandFloatOp_STORE(SDNode *N, unsigned OpNo); 611 612 void FloatExpandSetCCOperands(SDValue &NewLHS, SDValue &NewRHS, 613 ISD::CondCode &CCCode, const SDLoc &dl); 614 615 //===--------------------------------------------------------------------===// 616 // Float promotion support: LegalizeFloatTypes.cpp 617 //===--------------------------------------------------------------------===// 618 619 SDValue GetPromotedFloat(SDValue Op) { 620 TableId &PromotedId = PromotedFloats[getTableId(Op)]; 621 SDValue PromotedOp = getSDValue(PromotedId); 622 assert(PromotedOp.getNode() && "Operand wasn't promoted?"); 623 return PromotedOp; 624 } 625 void SetPromotedFloat(SDValue Op, SDValue Result); 626 627 void PromoteFloatResult(SDNode *N, unsigned ResNo); 628 SDValue PromoteFloatRes_BITCAST(SDNode *N); 629 SDValue PromoteFloatRes_BinOp(SDNode *N); 630 SDValue PromoteFloatRes_ConstantFP(SDNode *N); 631 SDValue PromoteFloatRes_EXTRACT_VECTOR_ELT(SDNode *N); 632 SDValue PromoteFloatRes_FCOPYSIGN(SDNode *N); 633 SDValue PromoteFloatRes_FMAD(SDNode *N); 634 SDValue PromoteFloatRes_FPOWI(SDNode *N); 635 SDValue PromoteFloatRes_FP_ROUND(SDNode *N); 636 SDValue PromoteFloatRes_LOAD(SDNode *N); 637 SDValue PromoteFloatRes_SELECT(SDNode *N); 638 SDValue PromoteFloatRes_SELECT_CC(SDNode *N); 639 SDValue PromoteFloatRes_UnaryOp(SDNode *N); 640 SDValue PromoteFloatRes_UNDEF(SDNode *N); 641 SDValue BitcastToInt_ATOMIC_SWAP(SDNode *N); 642 SDValue PromoteFloatRes_XINT_TO_FP(SDNode *N); 643 644 bool PromoteFloatOperand(SDNode *N, unsigned OpNo); 645 SDValue PromoteFloatOp_BITCAST(SDNode *N, unsigned OpNo); 646 SDValue PromoteFloatOp_FCOPYSIGN(SDNode *N, unsigned OpNo); 647 SDValue PromoteFloatOp_FP_EXTEND(SDNode *N, unsigned OpNo); 648 SDValue PromoteFloatOp_FP_TO_XINT(SDNode *N, unsigned OpNo); 649 SDValue PromoteFloatOp_STORE(SDNode *N, unsigned OpNo); 650 SDValue PromoteFloatOp_SELECT_CC(SDNode *N, unsigned OpNo); 651 SDValue PromoteFloatOp_SETCC(SDNode *N, unsigned OpNo); 652 653 //===--------------------------------------------------------------------===// 654 // Scalarization Support: LegalizeVectorTypes.cpp 655 //===--------------------------------------------------------------------===// 656 657 /// Given a processed one-element vector Op which was scalarized to its 658 /// element type, this returns the element. For example, if Op is a v1i32, 659 /// Op = < i32 val >, this method returns val, an i32. 660 SDValue GetScalarizedVector(SDValue Op) { 661 TableId &ScalarizedId = ScalarizedVectors[getTableId(Op)]; 662 SDValue ScalarizedOp = getSDValue(ScalarizedId); 663 assert(ScalarizedOp.getNode() && "Operand wasn't scalarized?"); 664 return ScalarizedOp; 665 } 666 void SetScalarizedVector(SDValue Op, SDValue Result); 667 668 // Vector Result Scalarization: <1 x ty> -> ty. 669 void ScalarizeVectorResult(SDNode *N, unsigned ResNo); 670 SDValue ScalarizeVecRes_MERGE_VALUES(SDNode *N, unsigned ResNo); 671 SDValue ScalarizeVecRes_BinOp(SDNode *N); 672 SDValue ScalarizeVecRes_TernaryOp(SDNode *N); 673 SDValue ScalarizeVecRes_UnaryOp(SDNode *N); 674 SDValue ScalarizeVecRes_StrictFPOp(SDNode *N); 675 SDValue ScalarizeVecRes_OverflowOp(SDNode *N, unsigned ResNo); 676 SDValue ScalarizeVecRes_InregOp(SDNode *N); 677 SDValue ScalarizeVecRes_VecInregOp(SDNode *N); 678 679 SDValue ScalarizeVecRes_BITCAST(SDNode *N); 680 SDValue ScalarizeVecRes_BUILD_VECTOR(SDNode *N); 681 SDValue ScalarizeVecRes_EXTRACT_SUBVECTOR(SDNode *N); 682 SDValue ScalarizeVecRes_FP_ROUND(SDNode *N); 683 SDValue ScalarizeVecRes_FPOWI(SDNode *N); 684 SDValue ScalarizeVecRes_INSERT_VECTOR_ELT(SDNode *N); 685 SDValue ScalarizeVecRes_LOAD(LoadSDNode *N); 686 SDValue ScalarizeVecRes_SCALAR_TO_VECTOR(SDNode *N); 687 SDValue ScalarizeVecRes_VSELECT(SDNode *N); 688 SDValue ScalarizeVecRes_SELECT(SDNode *N); 689 SDValue ScalarizeVecRes_SELECT_CC(SDNode *N); 690 SDValue ScalarizeVecRes_SETCC(SDNode *N); 691 SDValue ScalarizeVecRes_UNDEF(SDNode *N); 692 SDValue ScalarizeVecRes_VECTOR_SHUFFLE(SDNode *N); 693 694 SDValue ScalarizeVecRes_FIX(SDNode *N); 695 696 // Vector Operand Scalarization: <1 x ty> -> ty. 697 bool ScalarizeVectorOperand(SDNode *N, unsigned OpNo); 698 SDValue ScalarizeVecOp_BITCAST(SDNode *N); 699 SDValue ScalarizeVecOp_UnaryOp(SDNode *N); 700 SDValue ScalarizeVecOp_UnaryOp_StrictFP(SDNode *N); 701 SDValue ScalarizeVecOp_CONCAT_VECTORS(SDNode *N); 702 SDValue ScalarizeVecOp_EXTRACT_VECTOR_ELT(SDNode *N); 703 SDValue ScalarizeVecOp_VSELECT(SDNode *N); 704 SDValue ScalarizeVecOp_VSETCC(SDNode *N); 705 SDValue ScalarizeVecOp_STORE(StoreSDNode *N, unsigned OpNo); 706 SDValue ScalarizeVecOp_FP_ROUND(SDNode *N, unsigned OpNo); 707 SDValue ScalarizeVecOp_STRICT_FP_ROUND(SDNode *N, unsigned OpNo); 708 SDValue ScalarizeVecOp_VECREDUCE(SDNode *N); 709 710 //===--------------------------------------------------------------------===// 711 // Vector Splitting Support: LegalizeVectorTypes.cpp 712 //===--------------------------------------------------------------------===// 713 714 /// Given a processed vector Op which was split into vectors of half the size, 715 /// this method returns the halves. The first elements of Op coincide with the 716 /// elements of Lo; the remaining elements of Op coincide with the elements of 717 /// Hi: Op is what you would get by concatenating Lo and Hi. 718 /// For example, if Op is a v8i32 that was split into two v4i32's, then this 719 /// method returns the two v4i32's, with Lo corresponding to the first 4 720 /// elements of Op, and Hi to the last 4 elements. 721 void GetSplitVector(SDValue Op, SDValue &Lo, SDValue &Hi); 722 void SetSplitVector(SDValue Op, SDValue Lo, SDValue Hi); 723 724 // Vector Result Splitting: <128 x ty> -> 2 x <64 x ty>. 725 void SplitVectorResult(SDNode *N, unsigned ResNo); 726 void SplitVecRes_BinOp(SDNode *N, SDValue &Lo, SDValue &Hi); 727 void SplitVecRes_TernaryOp(SDNode *N, SDValue &Lo, SDValue &Hi); 728 void SplitVecRes_UnaryOp(SDNode *N, SDValue &Lo, SDValue &Hi); 729 void SplitVecRes_ExtendOp(SDNode *N, SDValue &Lo, SDValue &Hi); 730 void SplitVecRes_InregOp(SDNode *N, SDValue &Lo, SDValue &Hi); 731 void SplitVecRes_ExtVecInRegOp(SDNode *N, SDValue &Lo, SDValue &Hi); 732 void SplitVecRes_StrictFPOp(SDNode *N, SDValue &Lo, SDValue &Hi); 733 void SplitVecRes_OverflowOp(SDNode *N, unsigned ResNo, 734 SDValue &Lo, SDValue &Hi); 735 736 void SplitVecRes_FIX(SDNode *N, SDValue &Lo, SDValue &Hi); 737 738 void SplitVecRes_BITCAST(SDNode *N, SDValue &Lo, SDValue &Hi); 739 void SplitVecRes_BUILD_VECTOR(SDNode *N, SDValue &Lo, SDValue &Hi); 740 void SplitVecRes_CONCAT_VECTORS(SDNode *N, SDValue &Lo, SDValue &Hi); 741 void SplitVecRes_EXTRACT_SUBVECTOR(SDNode *N, SDValue &Lo, SDValue &Hi); 742 void SplitVecRes_INSERT_SUBVECTOR(SDNode *N, SDValue &Lo, SDValue &Hi); 743 void SplitVecRes_FPOWI(SDNode *N, SDValue &Lo, SDValue &Hi); 744 void SplitVecRes_FCOPYSIGN(SDNode *N, SDValue &Lo, SDValue &Hi); 745 void SplitVecRes_INSERT_VECTOR_ELT(SDNode *N, SDValue &Lo, SDValue &Hi); 746 void SplitVecRes_LOAD(LoadSDNode *LD, SDValue &Lo, SDValue &Hi); 747 void SplitVecRes_MLOAD(MaskedLoadSDNode *MLD, SDValue &Lo, SDValue &Hi); 748 void SplitVecRes_MGATHER(MaskedGatherSDNode *MGT, SDValue &Lo, SDValue &Hi); 749 void SplitVecRes_SCALAR_TO_VECTOR(SDNode *N, SDValue &Lo, SDValue &Hi); 750 void SplitVecRes_SETCC(SDNode *N, SDValue &Lo, SDValue &Hi); 751 void SplitVecRes_VECTOR_SHUFFLE(ShuffleVectorSDNode *N, SDValue &Lo, 752 SDValue &Hi); 753 void SplitVecRes_VAARG(SDNode *N, SDValue &Lo, SDValue &Hi); 754 755 // Vector Operand Splitting: <128 x ty> -> 2 x <64 x ty>. 756 bool SplitVectorOperand(SDNode *N, unsigned OpNo); 757 SDValue SplitVecOp_VSELECT(SDNode *N, unsigned OpNo); 758 SDValue SplitVecOp_VECREDUCE(SDNode *N, unsigned OpNo); 759 SDValue SplitVecOp_UnaryOp(SDNode *N); 760 SDValue SplitVecOp_TruncateHelper(SDNode *N); 761 762 SDValue SplitVecOp_BITCAST(SDNode *N); 763 SDValue SplitVecOp_EXTRACT_SUBVECTOR(SDNode *N); 764 SDValue SplitVecOp_EXTRACT_VECTOR_ELT(SDNode *N); 765 SDValue SplitVecOp_ExtVecInRegOp(SDNode *N); 766 SDValue SplitVecOp_STORE(StoreSDNode *N, unsigned OpNo); 767 SDValue SplitVecOp_MSTORE(MaskedStoreSDNode *N, unsigned OpNo); 768 SDValue SplitVecOp_MSCATTER(MaskedScatterSDNode *N, unsigned OpNo); 769 SDValue SplitVecOp_MGATHER(MaskedGatherSDNode *MGT, unsigned OpNo); 770 SDValue SplitVecOp_CONCAT_VECTORS(SDNode *N); 771 SDValue SplitVecOp_VSETCC(SDNode *N); 772 SDValue SplitVecOp_FP_ROUND(SDNode *N); 773 SDValue SplitVecOp_FCOPYSIGN(SDNode *N); 774 775 //===--------------------------------------------------------------------===// 776 // Vector Widening Support: LegalizeVectorTypes.cpp 777 //===--------------------------------------------------------------------===// 778 779 /// Given a processed vector Op which was widened into a larger vector, this 780 /// method returns the larger vector. The elements of the returned vector 781 /// consist of the elements of Op followed by elements containing rubbish. 782 /// For example, if Op is a v2i32 that was widened to a v4i32, then this 783 /// method returns a v4i32 for which the first two elements are the same as 784 /// those of Op, while the last two elements contain rubbish. 785 SDValue GetWidenedVector(SDValue Op) { 786 TableId &WidenedId = WidenedVectors[getTableId(Op)]; 787 SDValue WidenedOp = getSDValue(WidenedId); 788 assert(WidenedOp.getNode() && "Operand wasn't widened?"); 789 return WidenedOp; 790 } 791 void SetWidenedVector(SDValue Op, SDValue Result); 792 793 // Widen Vector Result Promotion. 794 void WidenVectorResult(SDNode *N, unsigned ResNo); 795 SDValue WidenVecRes_MERGE_VALUES(SDNode* N, unsigned ResNo); 796 SDValue WidenVecRes_BITCAST(SDNode* N); 797 SDValue WidenVecRes_BUILD_VECTOR(SDNode* N); 798 SDValue WidenVecRes_CONCAT_VECTORS(SDNode* N); 799 SDValue WidenVecRes_EXTEND_VECTOR_INREG(SDNode* N); 800 SDValue WidenVecRes_EXTRACT_SUBVECTOR(SDNode* N); 801 SDValue WidenVecRes_INSERT_VECTOR_ELT(SDNode* N); 802 SDValue WidenVecRes_LOAD(SDNode* N); 803 SDValue WidenVecRes_MLOAD(MaskedLoadSDNode* N); 804 SDValue WidenVecRes_MGATHER(MaskedGatherSDNode* N); 805 SDValue WidenVecRes_SCALAR_TO_VECTOR(SDNode* N); 806 SDValue WidenVecRes_SELECT(SDNode* N); 807 SDValue WidenVSELECTAndMask(SDNode *N); 808 SDValue WidenVecRes_SELECT_CC(SDNode* N); 809 SDValue WidenVecRes_SETCC(SDNode* N); 810 SDValue WidenVecRes_STRICT_FSETCC(SDNode* N); 811 SDValue WidenVecRes_UNDEF(SDNode *N); 812 SDValue WidenVecRes_VECTOR_SHUFFLE(ShuffleVectorSDNode *N); 813 814 SDValue WidenVecRes_Ternary(SDNode *N); 815 SDValue WidenVecRes_Binary(SDNode *N); 816 SDValue WidenVecRes_BinaryCanTrap(SDNode *N); 817 SDValue WidenVecRes_BinaryWithExtraScalarOp(SDNode *N); 818 SDValue WidenVecRes_StrictFP(SDNode *N); 819 SDValue WidenVecRes_OverflowOp(SDNode *N, unsigned ResNo); 820 SDValue WidenVecRes_Convert(SDNode *N); 821 SDValue WidenVecRes_Convert_StrictFP(SDNode *N); 822 SDValue WidenVecRes_FCOPYSIGN(SDNode *N); 823 SDValue WidenVecRes_POWI(SDNode *N); 824 SDValue WidenVecRes_Shift(SDNode *N); 825 SDValue WidenVecRes_Unary(SDNode *N); 826 SDValue WidenVecRes_InregOp(SDNode *N); 827 828 // Widen Vector Operand. 829 bool WidenVectorOperand(SDNode *N, unsigned OpNo); 830 SDValue WidenVecOp_BITCAST(SDNode *N); 831 SDValue WidenVecOp_CONCAT_VECTORS(SDNode *N); 832 SDValue WidenVecOp_EXTEND(SDNode *N); 833 SDValue WidenVecOp_EXTRACT_VECTOR_ELT(SDNode *N); 834 SDValue WidenVecOp_EXTRACT_SUBVECTOR(SDNode *N); 835 SDValue WidenVecOp_STORE(SDNode* N); 836 SDValue WidenVecOp_MSTORE(SDNode* N, unsigned OpNo); 837 SDValue WidenVecOp_MGATHER(SDNode* N, unsigned OpNo); 838 SDValue WidenVecOp_MSCATTER(SDNode* N, unsigned OpNo); 839 SDValue WidenVecOp_SETCC(SDNode* N); 840 SDValue WidenVecOp_STRICT_FSETCC(SDNode* N); 841 SDValue WidenVecOp_VSELECT(SDNode *N); 842 843 SDValue WidenVecOp_Convert(SDNode *N); 844 SDValue WidenVecOp_FCOPYSIGN(SDNode *N); 845 SDValue WidenVecOp_VECREDUCE(SDNode *N); 846 847 /// Helper function to generate a set of operations to perform 848 /// a vector operation for a wider type. 849 /// 850 SDValue UnrollVectorOp_StrictFP(SDNode *N, unsigned ResNE); 851 852 //===--------------------------------------------------------------------===// 853 // Vector Widening Utilities Support: LegalizeVectorTypes.cpp 854 //===--------------------------------------------------------------------===// 855 856 /// Helper function to generate a set of loads to load a vector with a 857 /// resulting wider type. It takes: 858 /// LdChain: list of chains for the load to be generated. 859 /// Ld: load to widen 860 SDValue GenWidenVectorLoads(SmallVectorImpl<SDValue> &LdChain, 861 LoadSDNode *LD); 862 863 /// Helper function to generate a set of extension loads to load a vector with 864 /// a resulting wider type. It takes: 865 /// LdChain: list of chains for the load to be generated. 866 /// Ld: load to widen 867 /// ExtType: extension element type 868 SDValue GenWidenVectorExtLoads(SmallVectorImpl<SDValue> &LdChain, 869 LoadSDNode *LD, ISD::LoadExtType ExtType); 870 871 /// Helper function to generate a set of stores to store a widen vector into 872 /// non-widen memory. 873 /// StChain: list of chains for the stores we have generated 874 /// ST: store of a widen value 875 void GenWidenVectorStores(SmallVectorImpl<SDValue> &StChain, StoreSDNode *ST); 876 877 /// Helper function to generate a set of stores to store a truncate widen 878 /// vector into non-widen memory. 879 /// StChain: list of chains for the stores we have generated 880 /// ST: store of a widen value 881 void GenWidenVectorTruncStores(SmallVectorImpl<SDValue> &StChain, 882 StoreSDNode *ST); 883 884 /// Modifies a vector input (widen or narrows) to a vector of NVT. The 885 /// input vector must have the same element type as NVT. 886 /// When FillWithZeroes is "on" the vector will be widened with zeroes. 887 /// By default, the vector will be widened with undefined values. 888 SDValue ModifyToType(SDValue InOp, EVT NVT, bool FillWithZeroes = false); 889 890 /// Return a mask of vector type MaskVT to replace InMask. Also adjust 891 /// MaskVT to ToMaskVT if needed with vector extension or truncation. 892 SDValue convertMask(SDValue InMask, EVT MaskVT, EVT ToMaskVT); 893 894 //===--------------------------------------------------------------------===// 895 // Generic Splitting: LegalizeTypesGeneric.cpp 896 //===--------------------------------------------------------------------===// 897 898 // Legalization methods which only use that the illegal type is split into two 899 // not necessarily identical types. As such they can be used for splitting 900 // vectors and expanding integers and floats. 901 902 void GetSplitOp(SDValue Op, SDValue &Lo, SDValue &Hi) { 903 if (Op.getValueType().isVector()) 904 GetSplitVector(Op, Lo, Hi); 905 else if (Op.getValueType().isInteger()) 906 GetExpandedInteger(Op, Lo, Hi); 907 else 908 GetExpandedFloat(Op, Lo, Hi); 909 } 910 911 /// Use ISD::EXTRACT_ELEMENT nodes to extract the low and high parts of the 912 /// given value. 913 void GetPairElements(SDValue Pair, SDValue &Lo, SDValue &Hi); 914 915 // Generic Result Splitting. 916 void SplitRes_MERGE_VALUES(SDNode *N, unsigned ResNo, 917 SDValue &Lo, SDValue &Hi); 918 void SplitRes_SELECT (SDNode *N, SDValue &Lo, SDValue &Hi); 919 void SplitRes_SELECT_CC (SDNode *N, SDValue &Lo, SDValue &Hi); 920 void SplitRes_UNDEF (SDNode *N, SDValue &Lo, SDValue &Hi); 921 922 void SplitVSETCC(const SDNode *N); 923 924 //===--------------------------------------------------------------------===// 925 // Generic Expansion: LegalizeTypesGeneric.cpp 926 //===--------------------------------------------------------------------===// 927 928 // Legalization methods which only use that the illegal type is split into two 929 // identical types of half the size, and that the Lo/Hi part is stored first 930 // in memory on little/big-endian machines, followed by the Hi/Lo part. As 931 // such they can be used for expanding integers and floats. 932 933 void GetExpandedOp(SDValue Op, SDValue &Lo, SDValue &Hi) { 934 if (Op.getValueType().isInteger()) 935 GetExpandedInteger(Op, Lo, Hi); 936 else 937 GetExpandedFloat(Op, Lo, Hi); 938 } 939 940 941 /// This function will split the integer \p Op into \p NumElements 942 /// operations of type \p EltVT and store them in \p Ops. 943 void IntegerToVector(SDValue Op, unsigned NumElements, 944 SmallVectorImpl<SDValue> &Ops, EVT EltVT); 945 946 // Generic Result Expansion. 947 void ExpandRes_MERGE_VALUES (SDNode *N, unsigned ResNo, 948 SDValue &Lo, SDValue &Hi); 949 void ExpandRes_BITCAST (SDNode *N, SDValue &Lo, SDValue &Hi); 950 void ExpandRes_BUILD_PAIR (SDNode *N, SDValue &Lo, SDValue &Hi); 951 void ExpandRes_EXTRACT_ELEMENT (SDNode *N, SDValue &Lo, SDValue &Hi); 952 void ExpandRes_EXTRACT_VECTOR_ELT(SDNode *N, SDValue &Lo, SDValue &Hi); 953 void ExpandRes_NormalLoad (SDNode *N, SDValue &Lo, SDValue &Hi); 954 void ExpandRes_VAARG (SDNode *N, SDValue &Lo, SDValue &Hi); 955 956 // Generic Operand Expansion. 957 SDValue ExpandOp_BITCAST (SDNode *N); 958 SDValue ExpandOp_BUILD_VECTOR (SDNode *N); 959 SDValue ExpandOp_EXTRACT_ELEMENT (SDNode *N); 960 SDValue ExpandOp_INSERT_VECTOR_ELT(SDNode *N); 961 SDValue ExpandOp_SCALAR_TO_VECTOR (SDNode *N); 962 SDValue ExpandOp_NormalStore (SDNode *N, unsigned OpNo); 963}; 964 965} // end namespace llvm. 966 967#endif 968