LegalizeTypes.h revision 92e0834ac7d9ff2539706522ef521bd2319dc15f
1//===-- LegalizeTypes.h - Definition of the DAG Type Legalizer class ------===// 2// 3// The LLVM Compiler Infrastructure 4// 5// This file is distributed under the University of Illinois Open Source 6// License. See LICENSE.TXT for details. 7// 8//===----------------------------------------------------------------------===// 9// 10// This file defines the DAGTypeLegalizer class. This is a private interface 11// shared between the code that implements the SelectionDAG::LegalizeTypes 12// method. 13// 14//===----------------------------------------------------------------------===// 15 16#ifndef SELECTIONDAG_LEGALIZETYPES_H 17#define SELECTIONDAG_LEGALIZETYPES_H 18 19#define DEBUG_TYPE "legalize-types" 20#include "llvm/CodeGen/SelectionDAG.h" 21#include "llvm/Target/TargetLowering.h" 22#include "llvm/ADT/DenseMap.h" 23#include "llvm/Support/Compiler.h" 24#include "llvm/Support/Debug.h" 25 26namespace llvm { 27 28//===----------------------------------------------------------------------===// 29/// DAGTypeLegalizer - This takes an arbitrary SelectionDAG as input and hacks 30/// on it until only value types the target machine can handle are left. This 31/// involves promoting small sizes to large sizes or splitting up large values 32/// into small values. 33/// 34class VISIBILITY_HIDDEN DAGTypeLegalizer { 35 TargetLowering &TLI; 36 SelectionDAG &DAG; 37public: 38 // NodeIDFlags - This pass uses the NodeID on the SDNodes to hold information 39 // about the state of the node. The enum has all the values. 40 enum NodeIDFlags { 41 /// ReadyToProcess - All operands have been processed, so this node is ready 42 /// to be handled. 43 ReadyToProcess = 0, 44 45 /// NewNode - This is a new node that was created in the process of 46 /// legalizing some other node. 47 NewNode = -1, 48 49 /// Processed - This is a node that has already been processed. 50 Processed = -2 51 52 // 1+ - This is a node which has this many unlegalized operands. 53 }; 54private: 55 enum LegalizeAction { 56 Legal, // The target natively supports this type. 57 PromoteInteger, // Replace this integer type with a larger one. 58 ExpandInteger, // Split this integer type into two of half the size. 59 SoftenFloat, // Convert this float type to a same size integer type. 60 ExpandFloat, // Split this float type into two of half the size. 61 ScalarizeVector, // Replace this one-element vector with its element type. 62 SplitVector // This vector type should be split into smaller vectors. 63 }; 64 65 /// ValueTypeActions - This is a bitvector that contains two bits for each 66 /// simple value type, where the two bits correspond to the LegalizeAction 67 /// enum from TargetLowering. This can be queried with "getTypeAction(VT)". 68 TargetLowering::ValueTypeActionImpl ValueTypeActions; 69 70 /// getTypeAction - Return how we should legalize values of this type, either 71 /// it is already legal, or we need to promote it to a larger integer type, or 72 /// we need to expand it into multiple registers of a smaller integer type, or 73 /// we need to split a vector type into smaller vector types, or we need to 74 /// convert it to a different type of the same size. 75 LegalizeAction getTypeAction(MVT VT) const { 76 switch (ValueTypeActions.getTypeAction(VT)) { 77 default: 78 assert(false && "Unknown legalize action!"); 79 case TargetLowering::Legal: 80 return Legal; 81 case TargetLowering::Promote: 82 return PromoteInteger; 83 case TargetLowering::Expand: 84 // Expand can mean 85 // 1) split scalar in half, 2) convert a float to an integer, 86 // 3) scalarize a single-element vector, 4) split a vector in two. 87 if (!VT.isVector()) { 88 if (VT.isInteger()) 89 return ExpandInteger; 90 else if (VT.getSizeInBits() == 91 TLI.getTypeToTransformTo(VT).getSizeInBits()) 92 return SoftenFloat; 93 else 94 return ExpandFloat; 95 } else if (VT.getVectorNumElements() == 1) { 96 return ScalarizeVector; 97 } else { 98 return SplitVector; 99 } 100 } 101 } 102 103 /// isTypeLegal - Return true if this type is legal on this target. 104 bool isTypeLegal(MVT VT) const { 105 return ValueTypeActions.getTypeAction(VT) == TargetLowering::Legal; 106 } 107 108 /// PromotedIntegers - For integer nodes that are below legal width, this map 109 /// indicates what promoted value to use. 110 DenseMap<SDOperand, SDOperand> PromotedIntegers; 111 112 /// ExpandedIntegers - For integer nodes that need to be expanded this map 113 /// indicates which operands are the expanded version of the input. 114 DenseMap<SDOperand, std::pair<SDOperand, SDOperand> > ExpandedIntegers; 115 116 /// SoftenedFloats - For floating point nodes converted to integers of 117 /// the same size, this map indicates the converted value to use. 118 DenseMap<SDOperand, SDOperand> SoftenedFloats; 119 120 /// ExpandedFloats - For float nodes that need to be expanded this map 121 /// indicates which operands are the expanded version of the input. 122 DenseMap<SDOperand, std::pair<SDOperand, SDOperand> > ExpandedFloats; 123 124 /// ScalarizedVectors - For nodes that are <1 x ty>, this map indicates the 125 /// scalar value of type 'ty' to use. 126 DenseMap<SDOperand, SDOperand> ScalarizedVectors; 127 128 /// SplitVectors - For nodes that need to be split this map indicates 129 /// which operands are the expanded version of the input. 130 DenseMap<SDOperand, std::pair<SDOperand, SDOperand> > SplitVectors; 131 132 /// ReplacedNodes - For nodes that have been replaced with another, 133 /// indicates the replacement node to use. 134 DenseMap<SDOperand, SDOperand> ReplacedNodes; 135 136 /// Worklist - This defines a worklist of nodes to process. In order to be 137 /// pushed onto this worklist, all operands of a node must have already been 138 /// processed. 139 SmallVector<SDNode*, 128> Worklist; 140 141public: 142 explicit DAGTypeLegalizer(SelectionDAG &dag) 143 : TLI(dag.getTargetLoweringInfo()), DAG(dag), 144 ValueTypeActions(TLI.getValueTypeActions()) { 145 assert(MVT::LAST_VALUETYPE <= 32 && 146 "Too many value types for ValueTypeActions to hold!"); 147 } 148 149 void run(); 150 151 /// ReanalyzeNode - Recompute the NodeID and correct processed operands 152 /// for the specified node, adding it to the worklist if ready. 153 void ReanalyzeNode(SDNode *N) { 154 N->setNodeId(NewNode); 155 AnalyzeNewNode(N); 156 } 157 158 void NoteDeletion(SDNode *Old, SDNode *New) { 159 ExpungeNode(Old); 160 ExpungeNode(New); 161 for (unsigned i = 0, e = Old->getNumValues(); i != e; ++i) 162 ReplacedNodes[SDOperand(Old, i)] = SDOperand(New, i); 163 } 164 165private: 166 void AnalyzeNewNode(SDNode *&N); 167 168 void ReplaceValueWith(SDOperand From, SDOperand To); 169 void ReplaceNodeWith(SDNode *From, SDNode *To); 170 171 void RemapNode(SDOperand &N); 172 void ExpungeNode(SDNode *N); 173 174 // Common routines. 175 SDOperand CreateStackStoreLoad(SDOperand Op, MVT DestVT); 176 SDOperand MakeLibCall(RTLIB::Libcall LC, MVT RetVT, 177 const SDOperand *Ops, unsigned NumOps, bool isSigned); 178 179 SDOperand BitConvertToInteger(SDOperand Op); 180 SDOperand JoinIntegers(SDOperand Lo, SDOperand Hi); 181 void SplitInteger(SDOperand Op, SDOperand &Lo, SDOperand &Hi); 182 void SplitInteger(SDOperand Op, MVT LoVT, MVT HiVT, 183 SDOperand &Lo, SDOperand &Hi); 184 185 SDOperand GetVectorElementPointer(SDOperand VecPtr, MVT EltVT, 186 SDOperand Index); 187 188 //===--------------------------------------------------------------------===// 189 // Integer Promotion Support: LegalizeIntegerTypes.cpp 190 //===--------------------------------------------------------------------===// 191 192 SDOperand GetPromotedInteger(SDOperand Op) { 193 SDOperand &PromotedOp = PromotedIntegers[Op]; 194 RemapNode(PromotedOp); 195 assert(PromotedOp.Val && "Operand wasn't promoted?"); 196 return PromotedOp; 197 } 198 void SetPromotedInteger(SDOperand Op, SDOperand Result); 199 200 /// ZExtPromotedInteger - Get a promoted operand and zero extend it to the 201 /// final size. 202 SDOperand ZExtPromotedInteger(SDOperand Op) { 203 MVT OldVT = Op.getValueType(); 204 Op = GetPromotedInteger(Op); 205 return DAG.getZeroExtendInReg(Op, OldVT); 206 } 207 208 // Integer Result Promotion. 209 void PromoteIntegerResult(SDNode *N, unsigned ResNo); 210 SDOperand PromoteIntRes_BIT_CONVERT(SDNode *N); 211 SDOperand PromoteIntRes_BUILD_PAIR(SDNode *N); 212 SDOperand PromoteIntRes_Constant(SDNode *N); 213 SDOperand PromoteIntRes_CTLZ(SDNode *N); 214 SDOperand PromoteIntRes_CTPOP(SDNode *N); 215 SDOperand PromoteIntRes_CTTZ(SDNode *N); 216 SDOperand PromoteIntRes_EXTRACT_VECTOR_ELT(SDNode *N); 217 SDOperand PromoteIntRes_FP_TO_XINT(SDNode *N); 218 SDOperand PromoteIntRes_INT_EXTEND(SDNode *N); 219 SDOperand PromoteIntRes_LOAD(LoadSDNode *N); 220 SDOperand PromoteIntRes_SDIV(SDNode *N); 221 SDOperand PromoteIntRes_SELECT (SDNode *N); 222 SDOperand PromoteIntRes_SELECT_CC(SDNode *N); 223 SDOperand PromoteIntRes_SETCC(SDNode *N); 224 SDOperand PromoteIntRes_SHL(SDNode *N); 225 SDOperand PromoteIntRes_SimpleIntBinOp(SDNode *N); 226 SDOperand PromoteIntRes_SRA(SDNode *N); 227 SDOperand PromoteIntRes_SRL(SDNode *N); 228 SDOperand PromoteIntRes_TRUNCATE(SDNode *N); 229 SDOperand PromoteIntRes_UDIV(SDNode *N); 230 SDOperand PromoteIntRes_UNDEF(SDNode *N); 231 SDOperand PromoteIntRes_VAARG(SDNode *N); 232 233 // Integer Operand Promotion. 234 bool PromoteIntegerOperand(SDNode *N, unsigned OperandNo); 235 SDOperand PromoteIntOp_ANY_EXTEND(SDNode *N); 236 SDOperand PromoteIntOp_BUILD_PAIR(SDNode *N); 237 SDOperand PromoteIntOp_BR_CC(SDNode *N, unsigned OpNo); 238 SDOperand PromoteIntOp_BRCOND(SDNode *N, unsigned OpNo); 239 SDOperand PromoteIntOp_BUILD_VECTOR(SDNode *N); 240 SDOperand PromoteIntOp_FP_EXTEND(SDNode *N); 241 SDOperand PromoteIntOp_FP_ROUND(SDNode *N); 242 SDOperand PromoteIntOp_INT_TO_FP(SDNode *N); 243 SDOperand PromoteIntOp_INSERT_VECTOR_ELT(SDNode *N, unsigned OpNo); 244 SDOperand PromoteIntOp_MEMBARRIER(SDNode *N); 245 SDOperand PromoteIntOp_SELECT(SDNode *N, unsigned OpNo); 246 SDOperand PromoteIntOp_SELECT_CC(SDNode *N, unsigned OpNo); 247 SDOperand PromoteIntOp_SETCC(SDNode *N, unsigned OpNo); 248 SDOperand PromoteIntOp_SIGN_EXTEND(SDNode *N); 249 SDOperand PromoteIntOp_STORE(StoreSDNode *N, unsigned OpNo); 250 SDOperand PromoteIntOp_TRUNCATE(SDNode *N); 251 SDOperand PromoteIntOp_ZERO_EXTEND(SDNode *N); 252 253 void PromoteSetCCOperands(SDOperand &LHS,SDOperand &RHS, ISD::CondCode Code); 254 255 //===--------------------------------------------------------------------===// 256 // Integer Expansion Support: LegalizeIntegerTypes.cpp 257 //===--------------------------------------------------------------------===// 258 259 void GetExpandedInteger(SDOperand Op, SDOperand &Lo, SDOperand &Hi); 260 void SetExpandedInteger(SDOperand Op, SDOperand Lo, SDOperand Hi); 261 262 // Integer Result Expansion. 263 void ExpandIntegerResult(SDNode *N, unsigned ResNo); 264 void ExpandIntRes_ANY_EXTEND (SDNode *N, SDOperand &Lo, SDOperand &Hi); 265 void ExpandIntRes_AssertZext (SDNode *N, SDOperand &Lo, SDOperand &Hi); 266 void ExpandIntRes_Constant (SDNode *N, SDOperand &Lo, SDOperand &Hi); 267 void ExpandIntRes_CTLZ (SDNode *N, SDOperand &Lo, SDOperand &Hi); 268 void ExpandIntRes_CTPOP (SDNode *N, SDOperand &Lo, SDOperand &Hi); 269 void ExpandIntRes_CTTZ (SDNode *N, SDOperand &Lo, SDOperand &Hi); 270 void ExpandIntRes_LOAD (LoadSDNode *N, SDOperand &Lo, SDOperand &Hi); 271 void ExpandIntRes_SIGN_EXTEND (SDNode *N, SDOperand &Lo, SDOperand &Hi); 272 void ExpandIntRes_SIGN_EXTEND_INREG (SDNode *N, SDOperand &Lo, SDOperand &Hi); 273 void ExpandIntRes_TRUNCATE (SDNode *N, SDOperand &Lo, SDOperand &Hi); 274 void ExpandIntRes_ZERO_EXTEND (SDNode *N, SDOperand &Lo, SDOperand &Hi); 275 void ExpandIntRes_FP_TO_SINT (SDNode *N, SDOperand &Lo, SDOperand &Hi); 276 void ExpandIntRes_FP_TO_UINT (SDNode *N, SDOperand &Lo, SDOperand &Hi); 277 278 void ExpandIntRes_Logical (SDNode *N, SDOperand &Lo, SDOperand &Hi); 279 void ExpandIntRes_ADDSUB (SDNode *N, SDOperand &Lo, SDOperand &Hi); 280 void ExpandIntRes_ADDSUBC (SDNode *N, SDOperand &Lo, SDOperand &Hi); 281 void ExpandIntRes_ADDSUBE (SDNode *N, SDOperand &Lo, SDOperand &Hi); 282 void ExpandIntRes_BSWAP (SDNode *N, SDOperand &Lo, SDOperand &Hi); 283 void ExpandIntRes_MUL (SDNode *N, SDOperand &Lo, SDOperand &Hi); 284 void ExpandIntRes_SDIV (SDNode *N, SDOperand &Lo, SDOperand &Hi); 285 void ExpandIntRes_SREM (SDNode *N, SDOperand &Lo, SDOperand &Hi); 286 void ExpandIntRes_UDIV (SDNode *N, SDOperand &Lo, SDOperand &Hi); 287 void ExpandIntRes_UREM (SDNode *N, SDOperand &Lo, SDOperand &Hi); 288 void ExpandIntRes_Shift (SDNode *N, SDOperand &Lo, SDOperand &Hi); 289 290 void ExpandShiftByConstant(SDNode *N, unsigned Amt, 291 SDOperand &Lo, SDOperand &Hi); 292 bool ExpandShiftWithKnownAmountBit(SDNode *N, SDOperand &Lo, SDOperand &Hi); 293 294 // Integer Operand Expansion. 295 bool ExpandIntegerOperand(SDNode *N, unsigned OperandNo); 296 SDOperand ExpandIntOp_BIT_CONVERT(SDNode *N); 297 SDOperand ExpandIntOp_BR_CC(SDNode *N); 298 SDOperand ExpandIntOp_BUILD_VECTOR(SDNode *N); 299 SDOperand ExpandIntOp_EXTRACT_ELEMENT(SDNode *N); 300 SDOperand ExpandIntOp_SELECT_CC(SDNode *N); 301 SDOperand ExpandIntOp_SETCC(SDNode *N); 302 SDOperand ExpandIntOp_SINT_TO_FP(SDNode *N); 303 SDOperand ExpandIntOp_STORE(StoreSDNode *N, unsigned OpNo); 304 SDOperand ExpandIntOp_TRUNCATE(SDNode *N); 305 SDOperand ExpandIntOp_UINT_TO_FP(SDNode *N); 306 307 void IntegerExpandSetCCOperands(SDOperand &NewLHS, SDOperand &NewRHS, 308 ISD::CondCode &CCCode); 309 310 //===--------------------------------------------------------------------===// 311 // Float to Integer Conversion Support: LegalizeFloatTypes.cpp 312 //===--------------------------------------------------------------------===// 313 314 SDOperand GetSoftenedFloat(SDOperand Op) { 315 SDOperand &SoftenedOp = SoftenedFloats[Op]; 316 RemapNode(SoftenedOp); 317 assert(SoftenedOp.Val && "Operand wasn't converted to integer?"); 318 return SoftenedOp; 319 } 320 void SetSoftenedFloat(SDOperand Op, SDOperand Result); 321 322 // Result Float to Integer Conversion. 323 void SoftenFloatResult(SDNode *N, unsigned OpNo); 324 SDOperand SoftenFloatRes_BIT_CONVERT(SDNode *N); 325 SDOperand SoftenFloatRes_BUILD_PAIR(SDNode *N); 326 SDOperand SoftenFloatRes_ConstantFP(ConstantFPSDNode *N); 327 SDOperand SoftenFloatRes_FADD(SDNode *N); 328 SDOperand SoftenFloatRes_FCOPYSIGN(SDNode *N); 329 SDOperand SoftenFloatRes_FMUL(SDNode *N); 330 SDOperand SoftenFloatRes_FP_EXTEND(SDNode *N); 331 SDOperand SoftenFloatRes_FP_ROUND(SDNode *N); 332 SDOperand SoftenFloatRes_FPOWI(SDNode *N); 333 SDOperand SoftenFloatRes_FSUB(SDNode *N); 334 SDOperand SoftenFloatRes_LOAD(SDNode *N); 335 SDOperand SoftenFloatRes_SELECT(SDNode *N); 336 SDOperand SoftenFloatRes_SELECT_CC(SDNode *N); 337 SDOperand SoftenFloatRes_SINT_TO_FP(SDNode *N); 338 SDOperand SoftenFloatRes_UINT_TO_FP(SDNode *N); 339 340 // Operand Float to Integer Conversion. 341 bool SoftenFloatOperand(SDNode *N, unsigned OpNo); 342 SDOperand SoftenFloatOp_BIT_CONVERT(SDNode *N); 343 SDOperand SoftenFloatOp_BR_CC(SDNode *N); 344 SDOperand SoftenFloatOp_FP_TO_SINT(SDNode *N); 345 SDOperand SoftenFloatOp_FP_TO_UINT(SDNode *N); 346 SDOperand SoftenFloatOp_SELECT_CC(SDNode *N); 347 SDOperand SoftenFloatOp_SETCC(SDNode *N); 348 SDOperand SoftenFloatOp_STORE(SDNode *N, unsigned OpNo); 349 350 void SoftenSetCCOperands(SDOperand &NewLHS, SDOperand &NewRHS, 351 ISD::CondCode &CCCode); 352 353 //===--------------------------------------------------------------------===// 354 // Float Expansion Support: LegalizeFloatTypes.cpp 355 //===--------------------------------------------------------------------===// 356 357 void GetExpandedFloat(SDOperand Op, SDOperand &Lo, SDOperand &Hi); 358 void SetExpandedFloat(SDOperand Op, SDOperand Lo, SDOperand Hi); 359 360 // Float Result Expansion. 361 void ExpandFloatResult(SDNode *N, unsigned ResNo); 362 void ExpandFloatRes_ConstantFP(SDNode *N, SDOperand &Lo, SDOperand &Hi); 363 void ExpandFloatRes_FADD (SDNode *N, SDOperand &Lo, SDOperand &Hi); 364 void ExpandFloatRes_FDIV (SDNode *N, SDOperand &Lo, SDOperand &Hi); 365 void ExpandFloatRes_FMUL (SDNode *N, SDOperand &Lo, SDOperand &Hi); 366 void ExpandFloatRes_FSUB (SDNode *N, SDOperand &Lo, SDOperand &Hi); 367 void ExpandFloatRes_LOAD (SDNode *N, SDOperand &Lo, SDOperand &Hi); 368 void ExpandFloatRes_XINT_TO_FP(SDNode *N, SDOperand &Lo, SDOperand &Hi); 369 370 // Float Operand Expansion. 371 bool ExpandFloatOperand(SDNode *N, unsigned OperandNo); 372 SDOperand ExpandFloatOp_BR_CC(SDNode *N); 373 SDOperand ExpandFloatOp_FP_ROUND(SDNode *N); 374 SDOperand ExpandFloatOp_FP_TO_SINT(SDNode *N); 375 SDOperand ExpandFloatOp_FP_TO_UINT(SDNode *N); 376 SDOperand ExpandFloatOp_SELECT_CC(SDNode *N); 377 SDOperand ExpandFloatOp_SETCC(SDNode *N); 378 SDOperand ExpandFloatOp_STORE(SDNode *N, unsigned OpNo); 379 380 void FloatExpandSetCCOperands(SDOperand &NewLHS, SDOperand &NewRHS, 381 ISD::CondCode &CCCode); 382 383 //===--------------------------------------------------------------------===// 384 // Scalarization Support: LegalizeVectorTypes.cpp 385 //===--------------------------------------------------------------------===// 386 387 SDOperand GetScalarizedVector(SDOperand Op) { 388 SDOperand &ScalarizedOp = ScalarizedVectors[Op]; 389 RemapNode(ScalarizedOp); 390 assert(ScalarizedOp.Val && "Operand wasn't scalarized?"); 391 return ScalarizedOp; 392 } 393 void SetScalarizedVector(SDOperand Op, SDOperand Result); 394 395 // Vector Result Scalarization: <1 x ty> -> ty. 396 void ScalarizeVectorResult(SDNode *N, unsigned OpNo); 397 SDOperand ScalarizeVecRes_BinOp(SDNode *N); 398 SDOperand ScalarizeVecRes_UnaryOp(SDNode *N); 399 400 SDOperand ScalarizeVecRes_BIT_CONVERT(SDNode *N); 401 SDOperand ScalarizeVecRes_FPOWI(SDNode *N); 402 SDOperand ScalarizeVecRes_INSERT_VECTOR_ELT(SDNode *N); 403 SDOperand ScalarizeVecRes_LOAD(LoadSDNode *N); 404 SDOperand ScalarizeVecRes_SELECT(SDNode *N); 405 SDOperand ScalarizeVecRes_UNDEF(SDNode *N); 406 SDOperand ScalarizeVecRes_VECTOR_SHUFFLE(SDNode *N); 407 408 // Vector Operand Scalarization: <1 x ty> -> ty. 409 bool ScalarizeVectorOperand(SDNode *N, unsigned OpNo); 410 SDOperand ScalarizeVecOp_BIT_CONVERT(SDNode *N); 411 SDOperand ScalarizeVecOp_EXTRACT_VECTOR_ELT(SDNode *N); 412 SDOperand ScalarizeVecOp_STORE(StoreSDNode *N, unsigned OpNo); 413 414 //===--------------------------------------------------------------------===// 415 // Vector Splitting Support: LegalizeVectorTypes.cpp 416 //===--------------------------------------------------------------------===// 417 418 void GetSplitVector(SDOperand Op, SDOperand &Lo, SDOperand &Hi); 419 void SetSplitVector(SDOperand Op, SDOperand Lo, SDOperand Hi); 420 421 // Vector Result Splitting: <128 x ty> -> 2 x <64 x ty>. 422 void SplitVectorResult(SDNode *N, unsigned OpNo); 423 424 void SplitVecRes_UNDEF(SDNode *N, SDOperand &Lo, SDOperand &Hi); 425 void SplitVecRes_LOAD(LoadSDNode *N, SDOperand &Lo, SDOperand &Hi); 426 void SplitVecRes_BUILD_PAIR(SDNode *N, SDOperand &Lo, SDOperand &Hi); 427 void SplitVecRes_INSERT_VECTOR_ELT(SDNode *N, SDOperand &Lo, SDOperand &Hi); 428 void SplitVecRes_VECTOR_SHUFFLE(SDNode *N, SDOperand &Lo, SDOperand &Hi); 429 430 void SplitVecRes_BUILD_VECTOR(SDNode *N, SDOperand &Lo, SDOperand &Hi); 431 void SplitVecRes_CONCAT_VECTORS(SDNode *N, SDOperand &Lo, SDOperand &Hi); 432 void SplitVecRes_BIT_CONVERT(SDNode *N, SDOperand &Lo, SDOperand &Hi); 433 void SplitVecRes_UnOp(SDNode *N, SDOperand &Lo, SDOperand &Hi); 434 void SplitVecRes_BinOp(SDNode *N, SDOperand &Lo, SDOperand &Hi); 435 void SplitVecRes_FPOWI(SDNode *N, SDOperand &Lo, SDOperand &Hi); 436 437 // Vector Operand Splitting: <128 x ty> -> 2 x <64 x ty>. 438 bool SplitVectorOperand(SDNode *N, unsigned OpNo); 439 440 SDOperand SplitVecOp_BIT_CONVERT(SDNode *N); 441 SDOperand SplitVecOp_EXTRACT_SUBVECTOR(SDNode *N); 442 SDOperand SplitVecOp_EXTRACT_VECTOR_ELT(SDNode *N); 443 SDOperand SplitVecOp_STORE(StoreSDNode *N, unsigned OpNo); 444 SDOperand SplitVecOp_VECTOR_SHUFFLE(SDNode *N, unsigned OpNo); 445 446 //===--------------------------------------------------------------------===// 447 // Generic Splitting: LegalizeTypesGeneric.cpp 448 //===--------------------------------------------------------------------===// 449 450 // Legalization methods which only use that the illegal type is split into two 451 // not necessarily identical types. As such they can be used for splitting 452 // vectors and expanding integers and floats. 453 454 void GetSplitOp(SDOperand Op, SDOperand &Lo, SDOperand &Hi) { 455 if (Op.getValueType().isVector()) 456 GetSplitVector(Op, Lo, Hi); 457 else if (Op.getValueType().isInteger()) 458 GetExpandedInteger(Op, Lo, Hi); 459 else 460 GetExpandedFloat(Op, Lo, Hi); 461 } 462 463 /// GetSplitDestVTs - Compute the VTs needed for the low/hi parts of a type 464 /// which is split (or expanded) into two not necessarily identical pieces. 465 void GetSplitDestVTs(MVT InVT, MVT &LoVT, MVT &HiVT); 466 467 // Generic Result Splitting. 468 void SplitRes_MERGE_VALUES(SDNode *N, SDOperand &Lo, SDOperand &Hi); 469 void SplitRes_SELECT (SDNode *N, SDOperand &Lo, SDOperand &Hi); 470 void SplitRes_SELECT_CC (SDNode *N, SDOperand &Lo, SDOperand &Hi); 471 void SplitRes_UNDEF (SDNode *N, SDOperand &Lo, SDOperand &Hi); 472 473 //===--------------------------------------------------------------------===// 474 // Generic Expansion: LegalizeTypesGeneric.cpp 475 //===--------------------------------------------------------------------===// 476 477 // Legalization methods which only use that the illegal type is split into two 478 // identical types of half the size, and that the Lo/Hi part is stored first 479 // in memory on little/big-endian machines, followed by the Hi/Lo part. As 480 // such they can be used for expanding integers and floats. 481 482 void GetExpandedOp(SDOperand Op, SDOperand &Lo, SDOperand &Hi) { 483 if (Op.getValueType().isInteger()) 484 GetExpandedInteger(Op, Lo, Hi); 485 else 486 GetExpandedFloat(Op, Lo, Hi); 487 } 488 489 // Generic Result Expansion. 490 void ExpandRes_BIT_CONVERT (SDNode *N, SDOperand &Lo, SDOperand &Hi); 491 void ExpandRes_BUILD_PAIR (SDNode *N, SDOperand &Lo, SDOperand &Hi); 492 void ExpandRes_EXTRACT_ELEMENT (SDNode *N, SDOperand &Lo, SDOperand &Hi); 493 void ExpandRes_EXTRACT_VECTOR_ELT(SDNode *N, SDOperand &Lo, SDOperand &Hi); 494 void ExpandRes_NormalLoad (SDNode *N, SDOperand &Lo, SDOperand &Hi); 495 496 // Generic Operand Expansion. 497 SDOperand ExpandOp_BIT_CONVERT (SDNode *N); 498 SDOperand ExpandOp_BUILD_VECTOR (SDNode *N); 499 SDOperand ExpandOp_EXTRACT_ELEMENT(SDNode *N); 500 SDOperand ExpandOp_NormalStore (SDNode *N, unsigned OpNo); 501 502}; 503 504} // end namespace llvm. 505 506#endif 507