LegalizeTypes.h revision 9a6b92de4c2207b427f3b9cd67cd122dafc5b6c6
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 // Promote can mean 83 // 1) For integers, use a larger integer type (e.g. i8 -> i32). 84 // 2) For vectors, use a wider vector type (e.g. v3i32 -> v4i32). 85 if (!VT.isVector()) 86 return PromoteInteger; 87 else if (VT.getVectorNumElements() == 1) 88 return ScalarizeVector; 89 else 90 // TODO: move widen code to LegalizeTypes. 91 return SplitVector; 92 case TargetLowering::Expand: 93 // Expand can mean 94 // 1) split scalar in half, 2) convert a float to an integer, 95 // 3) scalarize a single-element vector, 4) split a vector in two. 96 if (!VT.isVector()) { 97 if (VT.isInteger()) 98 return ExpandInteger; 99 else if (VT.getSizeInBits() == 100 TLI.getTypeToTransformTo(VT).getSizeInBits()) 101 return SoftenFloat; 102 else 103 return ExpandFloat; 104 } else if (VT.getVectorNumElements() == 1) { 105 return ScalarizeVector; 106 } else { 107 return SplitVector; 108 } 109 } 110 } 111 112 /// isTypeLegal - Return true if this type is legal on this target. 113 bool isTypeLegal(MVT VT) const { 114 return ValueTypeActions.getTypeAction(VT) == TargetLowering::Legal; 115 } 116 117 /// IgnoreNodeResults - Pretend all of this node's results are legal. 118 bool IgnoreNodeResults(SDNode *N) const { 119 return N->getOpcode() == ISD::TargetConstant; 120 } 121 122 /// PromotedIntegers - For integer nodes that are below legal width, this map 123 /// indicates what promoted value to use. 124 DenseMap<SDValue, SDValue> PromotedIntegers; 125 126 /// ExpandedIntegers - For integer nodes that need to be expanded this map 127 /// indicates which operands are the expanded version of the input. 128 DenseMap<SDValue, std::pair<SDValue, SDValue> > ExpandedIntegers; 129 130 /// SoftenedFloats - For floating point nodes converted to integers of 131 /// the same size, this map indicates the converted value to use. 132 DenseMap<SDValue, SDValue> SoftenedFloats; 133 134 /// ExpandedFloats - For float nodes that need to be expanded this map 135 /// indicates which operands are the expanded version of the input. 136 DenseMap<SDValue, std::pair<SDValue, SDValue> > ExpandedFloats; 137 138 /// ScalarizedVectors - For nodes that are <1 x ty>, this map indicates the 139 /// scalar value of type 'ty' to use. 140 DenseMap<SDValue, SDValue> ScalarizedVectors; 141 142 /// SplitVectors - For nodes that need to be split this map indicates 143 /// which operands are the expanded version of the input. 144 DenseMap<SDValue, std::pair<SDValue, SDValue> > SplitVectors; 145 146 /// ReplacedValues - For values that have been replaced with another, 147 /// indicates the replacement value to use. 148 DenseMap<SDValue, SDValue> ReplacedValues; 149 150 /// Worklist - This defines a worklist of nodes to process. In order to be 151 /// pushed onto this worklist, all operands of a node must have already been 152 /// processed. 153 SmallVector<SDNode*, 128> Worklist; 154 155public: 156 explicit DAGTypeLegalizer(SelectionDAG &dag) 157 : TLI(dag.getTargetLoweringInfo()), DAG(dag), 158 ValueTypeActions(TLI.getValueTypeActions()) { 159 assert(MVT::LAST_VALUETYPE <= 32 && 160 "Too many value types for ValueTypeActions to hold!"); 161 } 162 163 void run(); 164 165 /// ReanalyzeNode - Recompute the NodeId and correct processed operands 166 /// for the specified node, adding it to the worklist if ready. 167 void ReanalyzeNode(SDNode *N) { 168 N->setNodeId(NewNode); 169 AnalyzeNewNode(N); 170 // The node may have changed but we don't care. 171 } 172 173 void NoteDeletion(SDNode *Old, SDNode *New) { 174 ExpungeNode(Old); 175 ExpungeNode(New); 176 for (unsigned i = 0, e = Old->getNumValues(); i != e; ++i) 177 ReplacedValues[SDValue(Old, i)] = SDValue(New, i); 178 } 179 180private: 181 SDNode *AnalyzeNewNode(SDNode *N); 182 void AnalyzeNewValue(SDValue &Val); 183 184 void ReplaceValueWith(SDValue From, SDValue To); 185 void ReplaceNodeWith(SDNode *From, SDNode *To); 186 187 void RemapValue(SDValue &N); 188 void ExpungeNode(SDNode *N); 189 190 // Common routines. 191 SDValue CreateStackStoreLoad(SDValue Op, MVT DestVT); 192 SDValue MakeLibCall(RTLIB::Libcall LC, MVT RetVT, 193 const SDValue *Ops, unsigned NumOps, bool isSigned); 194 SDValue LibCallify(RTLIB::Libcall LC, SDNode *N, bool isSigned); 195 196 SDValue BitConvertToInteger(SDValue Op); 197 SDValue JoinIntegers(SDValue Lo, SDValue Hi); 198 void SplitInteger(SDValue Op, SDValue &Lo, SDValue &Hi); 199 void SplitInteger(SDValue Op, MVT LoVT, MVT HiVT, 200 SDValue &Lo, SDValue &Hi); 201 202 SDValue GetVectorElementPointer(SDValue VecPtr, MVT EltVT, SDValue Index); 203 204 //===--------------------------------------------------------------------===// 205 // Integer Promotion Support: LegalizeIntegerTypes.cpp 206 //===--------------------------------------------------------------------===// 207 208 /// GetPromotedInteger - Given a processed operand Op which was promoted to a 209 /// larger integer type, this returns the promoted value. The bits of the 210 /// promoted value corresponding to the original type are exactly equal to Op. 211 /// The extra bits contain rubbish, so the promoted value may need to be zero- 212 /// or sign-extended from the original type before it is usable (the helpers 213 /// SExtPromotedInteger and ZExtPromotedInteger can do this for you). 214 /// For example, if Op is an i16 and was promoted to an i32, then this method 215 /// returns an i32, the lower 16 bits of which coincide with Op, and the upper 216 /// 16 bits of which contain rubbish. 217 SDValue GetPromotedInteger(SDValue Op) { 218 SDValue &PromotedOp = PromotedIntegers[Op]; 219 RemapValue(PromotedOp); 220 assert(PromotedOp.getNode() && "Operand wasn't promoted?"); 221 return PromotedOp; 222 } 223 void SetPromotedInteger(SDValue Op, SDValue Result); 224 225 /// SExtPromotedInteger - Get a promoted operand and sign extend it to the 226 /// final size. 227 SDValue SExtPromotedInteger(SDValue Op) { 228 MVT OldVT = Op.getValueType(); 229 Op = GetPromotedInteger(Op); 230 return DAG.getNode(ISD::SIGN_EXTEND_INREG, Op.getValueType(), Op, 231 DAG.getValueType(OldVT)); 232 } 233 234 /// ZExtPromotedInteger - Get a promoted operand and zero extend it to the 235 /// final size. 236 SDValue ZExtPromotedInteger(SDValue Op) { 237 MVT OldVT = Op.getValueType(); 238 Op = GetPromotedInteger(Op); 239 return DAG.getZeroExtendInReg(Op, OldVT); 240 } 241 242 // Integer Result Promotion. 243 void PromoteIntegerResult(SDNode *N, unsigned ResNo); 244 SDValue PromoteIntRes_AssertSext(SDNode *N); 245 SDValue PromoteIntRes_AssertZext(SDNode *N); 246 SDValue PromoteIntRes_Atomic1(AtomicSDNode *N); 247 SDValue PromoteIntRes_Atomic2(AtomicSDNode *N); 248 SDValue PromoteIntRes_BIT_CONVERT(SDNode *N); 249 SDValue PromoteIntRes_BSWAP(SDNode *N); 250 SDValue PromoteIntRes_BUILD_PAIR(SDNode *N); 251 SDValue PromoteIntRes_Constant(SDNode *N); 252 SDValue PromoteIntRes_CONVERT_RNDSAT(SDNode *N); 253 SDValue PromoteIntRes_CTLZ(SDNode *N); 254 SDValue PromoteIntRes_CTPOP(SDNode *N); 255 SDValue PromoteIntRes_CTTZ(SDNode *N); 256 SDValue PromoteIntRes_EXTRACT_VECTOR_ELT(SDNode *N); 257 SDValue PromoteIntRes_FP_TO_XINT(SDNode *N); 258 SDValue PromoteIntRes_INT_EXTEND(SDNode *N); 259 SDValue PromoteIntRes_LOAD(LoadSDNode *N); 260 SDValue PromoteIntRes_SDIV(SDNode *N); 261 SDValue PromoteIntRes_SELECT(SDNode *N); 262 SDValue PromoteIntRes_SELECT_CC(SDNode *N); 263 SDValue PromoteIntRes_SETCC(SDNode *N); 264 SDValue PromoteIntRes_SHL(SDNode *N); 265 SDValue PromoteIntRes_SimpleIntBinOp(SDNode *N); 266 SDValue PromoteIntRes_SIGN_EXTEND_INREG(SDNode *N); 267 SDValue PromoteIntRes_SRA(SDNode *N); 268 SDValue PromoteIntRes_SRL(SDNode *N); 269 SDValue PromoteIntRes_TRUNCATE(SDNode *N); 270 SDValue PromoteIntRes_UDIV(SDNode *N); 271 SDValue PromoteIntRes_UNDEF(SDNode *N); 272 SDValue PromoteIntRes_VAARG(SDNode *N); 273 274 // Integer Operand Promotion. 275 bool PromoteIntegerOperand(SDNode *N, unsigned OperandNo); 276 SDValue PromoteIntOp_ANY_EXTEND(SDNode *N); 277 SDValue PromoteIntOp_BUILD_PAIR(SDNode *N); 278 SDValue PromoteIntOp_BR_CC(SDNode *N, unsigned OpNo); 279 SDValue PromoteIntOp_BRCOND(SDNode *N, unsigned OpNo); 280 SDValue PromoteIntOp_BUILD_VECTOR(SDNode *N); 281 SDValue PromoteIntOp_CONVERT_RNDSAT(SDNode *N); 282 SDValue PromoteIntOp_INSERT_VECTOR_ELT(SDNode *N, unsigned OpNo); 283 SDValue PromoteIntOp_MEMBARRIER(SDNode *N); 284 SDValue PromoteIntOp_SELECT(SDNode *N, unsigned OpNo); 285 SDValue PromoteIntOp_SELECT_CC(SDNode *N, unsigned OpNo); 286 SDValue PromoteIntOp_SETCC(SDNode *N, unsigned OpNo); 287 SDValue PromoteIntOp_SIGN_EXTEND(SDNode *N); 288 SDValue PromoteIntOp_SINT_TO_FP(SDNode *N); 289 SDValue PromoteIntOp_STORE(StoreSDNode *N, unsigned OpNo); 290 SDValue PromoteIntOp_TRUNCATE(SDNode *N); 291 SDValue PromoteIntOp_UINT_TO_FP(SDNode *N); 292 SDValue PromoteIntOp_ZERO_EXTEND(SDNode *N); 293 294 void PromoteSetCCOperands(SDValue &LHS,SDValue &RHS, ISD::CondCode Code); 295 296 //===--------------------------------------------------------------------===// 297 // Integer Expansion Support: LegalizeIntegerTypes.cpp 298 //===--------------------------------------------------------------------===// 299 300 void GetExpandedInteger(SDValue Op, SDValue &Lo, SDValue &Hi); 301 void SetExpandedInteger(SDValue Op, SDValue Lo, SDValue Hi); 302 303 // Integer Result Expansion. 304 void ExpandIntegerResult(SDNode *N, unsigned ResNo); 305 void ExpandIntRes_ANY_EXTEND (SDNode *N, SDValue &Lo, SDValue &Hi); 306 void ExpandIntRes_AssertSext (SDNode *N, SDValue &Lo, SDValue &Hi); 307 void ExpandIntRes_AssertZext (SDNode *N, SDValue &Lo, SDValue &Hi); 308 void ExpandIntRes_Constant (SDNode *N, SDValue &Lo, SDValue &Hi); 309 void ExpandIntRes_CTLZ (SDNode *N, SDValue &Lo, SDValue &Hi); 310 void ExpandIntRes_CTPOP (SDNode *N, SDValue &Lo, SDValue &Hi); 311 void ExpandIntRes_CTTZ (SDNode *N, SDValue &Lo, SDValue &Hi); 312 void ExpandIntRes_LOAD (LoadSDNode *N, SDValue &Lo, SDValue &Hi); 313 void ExpandIntRes_SIGN_EXTEND (SDNode *N, SDValue &Lo, SDValue &Hi); 314 void ExpandIntRes_SIGN_EXTEND_INREG (SDNode *N, SDValue &Lo, SDValue &Hi); 315 void ExpandIntRes_TRUNCATE (SDNode *N, SDValue &Lo, SDValue &Hi); 316 void ExpandIntRes_ZERO_EXTEND (SDNode *N, SDValue &Lo, SDValue &Hi); 317 void ExpandIntRes_FP_TO_SINT (SDNode *N, SDValue &Lo, SDValue &Hi); 318 void ExpandIntRes_FP_TO_UINT (SDNode *N, SDValue &Lo, SDValue &Hi); 319 320 void ExpandIntRes_Logical (SDNode *N, SDValue &Lo, SDValue &Hi); 321 void ExpandIntRes_ADDSUB (SDNode *N, SDValue &Lo, SDValue &Hi); 322 void ExpandIntRes_ADDSUBC (SDNode *N, SDValue &Lo, SDValue &Hi); 323 void ExpandIntRes_ADDSUBE (SDNode *N, SDValue &Lo, SDValue &Hi); 324 void ExpandIntRes_BSWAP (SDNode *N, SDValue &Lo, SDValue &Hi); 325 void ExpandIntRes_MUL (SDNode *N, SDValue &Lo, SDValue &Hi); 326 void ExpandIntRes_SDIV (SDNode *N, SDValue &Lo, SDValue &Hi); 327 void ExpandIntRes_SREM (SDNode *N, SDValue &Lo, SDValue &Hi); 328 void ExpandIntRes_UDIV (SDNode *N, SDValue &Lo, SDValue &Hi); 329 void ExpandIntRes_UREM (SDNode *N, SDValue &Lo, SDValue &Hi); 330 void ExpandIntRes_Shift (SDNode *N, SDValue &Lo, SDValue &Hi); 331 332 void ExpandShiftByConstant(SDNode *N, unsigned Amt, 333 SDValue &Lo, SDValue &Hi); 334 bool ExpandShiftWithKnownAmountBit(SDNode *N, SDValue &Lo, SDValue &Hi); 335 336 // Integer Operand Expansion. 337 bool ExpandIntegerOperand(SDNode *N, unsigned OperandNo); 338 SDValue ExpandIntOp_BIT_CONVERT(SDNode *N); 339 SDValue ExpandIntOp_BR_CC(SDNode *N); 340 SDValue ExpandIntOp_BUILD_VECTOR(SDNode *N); 341 SDValue ExpandIntOp_EXTRACT_ELEMENT(SDNode *N); 342 SDValue ExpandIntOp_SELECT_CC(SDNode *N); 343 SDValue ExpandIntOp_SETCC(SDNode *N); 344 SDValue ExpandIntOp_SINT_TO_FP(SDNode *N); 345 SDValue ExpandIntOp_STORE(StoreSDNode *N, unsigned OpNo); 346 SDValue ExpandIntOp_TRUNCATE(SDNode *N); 347 SDValue ExpandIntOp_UINT_TO_FP(SDNode *N); 348 349 void IntegerExpandSetCCOperands(SDValue &NewLHS, SDValue &NewRHS, 350 ISD::CondCode &CCCode); 351 352 //===--------------------------------------------------------------------===// 353 // Float to Integer Conversion Support: LegalizeFloatTypes.cpp 354 //===--------------------------------------------------------------------===// 355 356 SDValue GetSoftenedFloat(SDValue Op) { 357 SDValue &SoftenedOp = SoftenedFloats[Op]; 358 RemapValue(SoftenedOp); 359 assert(SoftenedOp.getNode() && "Operand wasn't converted to integer?"); 360 return SoftenedOp; 361 } 362 void SetSoftenedFloat(SDValue Op, SDValue Result); 363 364 // Result Float to Integer Conversion. 365 void SoftenFloatResult(SDNode *N, unsigned OpNo); 366 SDValue SoftenFloatRes_BIT_CONVERT(SDNode *N); 367 SDValue SoftenFloatRes_BUILD_PAIR(SDNode *N); 368 SDValue SoftenFloatRes_ConstantFP(ConstantFPSDNode *N); 369 SDValue SoftenFloatRes_FABS(SDNode *N); 370 SDValue SoftenFloatRes_FADD(SDNode *N); 371 SDValue SoftenFloatRes_FCEIL(SDNode *N); 372 SDValue SoftenFloatRes_FCOPYSIGN(SDNode *N); 373 SDValue SoftenFloatRes_FCOS(SDNode *N); 374 SDValue SoftenFloatRes_FDIV(SDNode *N); 375 SDValue SoftenFloatRes_FEXP(SDNode *N); 376 SDValue SoftenFloatRes_FEXP2(SDNode *N); 377 SDValue SoftenFloatRes_FFLOOR(SDNode *N); 378 SDValue SoftenFloatRes_FLOG(SDNode *N); 379 SDValue SoftenFloatRes_FLOG2(SDNode *N); 380 SDValue SoftenFloatRes_FLOG10(SDNode *N); 381 SDValue SoftenFloatRes_FMUL(SDNode *N); 382 SDValue SoftenFloatRes_FNEARBYINT(SDNode *N); 383 SDValue SoftenFloatRes_FNEG(SDNode *N); 384 SDValue SoftenFloatRes_FP_EXTEND(SDNode *N); 385 SDValue SoftenFloatRes_FP_ROUND(SDNode *N); 386 SDValue SoftenFloatRes_FPOW(SDNode *N); 387 SDValue SoftenFloatRes_FPOWI(SDNode *N); 388 SDValue SoftenFloatRes_FRINT(SDNode *N); 389 SDValue SoftenFloatRes_FSIN(SDNode *N); 390 SDValue SoftenFloatRes_FSQRT(SDNode *N); 391 SDValue SoftenFloatRes_FSUB(SDNode *N); 392 SDValue SoftenFloatRes_FTRUNC(SDNode *N); 393 SDValue SoftenFloatRes_LOAD(SDNode *N); 394 SDValue SoftenFloatRes_SELECT(SDNode *N); 395 SDValue SoftenFloatRes_SELECT_CC(SDNode *N); 396 SDValue SoftenFloatRes_XINT_TO_FP(SDNode *N); 397 398 // Operand Float to Integer Conversion. 399 bool SoftenFloatOperand(SDNode *N, unsigned OpNo); 400 SDValue SoftenFloatOp_BIT_CONVERT(SDNode *N); 401 SDValue SoftenFloatOp_BR_CC(SDNode *N); 402 SDValue SoftenFloatOp_FP_ROUND(SDNode *N); 403 SDValue SoftenFloatOp_FP_TO_SINT(SDNode *N); 404 SDValue SoftenFloatOp_FP_TO_UINT(SDNode *N); 405 SDValue SoftenFloatOp_SELECT_CC(SDNode *N); 406 SDValue SoftenFloatOp_SETCC(SDNode *N); 407 SDValue SoftenFloatOp_STORE(SDNode *N, unsigned OpNo); 408 409 void SoftenSetCCOperands(SDValue &NewLHS, SDValue &NewRHS, 410 ISD::CondCode &CCCode); 411 412 //===--------------------------------------------------------------------===// 413 // Float Expansion Support: LegalizeFloatTypes.cpp 414 //===--------------------------------------------------------------------===// 415 416 void GetExpandedFloat(SDValue Op, SDValue &Lo, SDValue &Hi); 417 void SetExpandedFloat(SDValue Op, SDValue Lo, SDValue Hi); 418 419 // Float Result Expansion. 420 void ExpandFloatResult(SDNode *N, unsigned ResNo); 421 void ExpandFloatRes_ConstantFP(SDNode *N, SDValue &Lo, SDValue &Hi); 422 void ExpandFloatRes_FABS (SDNode *N, SDValue &Lo, SDValue &Hi); 423 void ExpandFloatRes_FADD (SDNode *N, SDValue &Lo, SDValue &Hi); 424 void ExpandFloatRes_FCEIL (SDNode *N, SDValue &Lo, SDValue &Hi); 425 void ExpandFloatRes_FCOS (SDNode *N, SDValue &Lo, SDValue &Hi); 426 void ExpandFloatRes_FDIV (SDNode *N, SDValue &Lo, SDValue &Hi); 427 void ExpandFloatRes_FEXP (SDNode *N, SDValue &Lo, SDValue &Hi); 428 void ExpandFloatRes_FEXP2 (SDNode *N, SDValue &Lo, SDValue &Hi); 429 void ExpandFloatRes_FFLOOR (SDNode *N, SDValue &Lo, SDValue &Hi); 430 void ExpandFloatRes_FLOG (SDNode *N, SDValue &Lo, SDValue &Hi); 431 void ExpandFloatRes_FLOG2 (SDNode *N, SDValue &Lo, SDValue &Hi); 432 void ExpandFloatRes_FLOG10 (SDNode *N, SDValue &Lo, SDValue &Hi); 433 void ExpandFloatRes_FMUL (SDNode *N, SDValue &Lo, SDValue &Hi); 434 void ExpandFloatRes_FNEARBYINT(SDNode *N, SDValue &Lo, SDValue &Hi); 435 void ExpandFloatRes_FNEG (SDNode *N, SDValue &Lo, SDValue &Hi); 436 void ExpandFloatRes_FP_EXTEND (SDNode *N, SDValue &Lo, SDValue &Hi); 437 void ExpandFloatRes_FPOW (SDNode *N, SDValue &Lo, SDValue &Hi); 438 void ExpandFloatRes_FPOWI (SDNode *N, SDValue &Lo, SDValue &Hi); 439 void ExpandFloatRes_FRINT (SDNode *N, SDValue &Lo, SDValue &Hi); 440 void ExpandFloatRes_FSIN (SDNode *N, SDValue &Lo, SDValue &Hi); 441 void ExpandFloatRes_FSQRT (SDNode *N, SDValue &Lo, SDValue &Hi); 442 void ExpandFloatRes_FSUB (SDNode *N, SDValue &Lo, SDValue &Hi); 443 void ExpandFloatRes_FTRUNC (SDNode *N, SDValue &Lo, SDValue &Hi); 444 void ExpandFloatRes_LOAD (SDNode *N, SDValue &Lo, SDValue &Hi); 445 void ExpandFloatRes_XINT_TO_FP(SDNode *N, SDValue &Lo, SDValue &Hi); 446 447 // Float Operand Expansion. 448 bool ExpandFloatOperand(SDNode *N, unsigned OperandNo); 449 SDValue ExpandFloatOp_BR_CC(SDNode *N); 450 SDValue ExpandFloatOp_FP_ROUND(SDNode *N); 451 SDValue ExpandFloatOp_FP_TO_SINT(SDNode *N); 452 SDValue ExpandFloatOp_FP_TO_UINT(SDNode *N); 453 SDValue ExpandFloatOp_SELECT_CC(SDNode *N); 454 SDValue ExpandFloatOp_SETCC(SDNode *N); 455 SDValue ExpandFloatOp_STORE(SDNode *N, unsigned OpNo); 456 457 void FloatExpandSetCCOperands(SDValue &NewLHS, SDValue &NewRHS, 458 ISD::CondCode &CCCode); 459 460 //===--------------------------------------------------------------------===// 461 // Scalarization Support: LegalizeVectorTypes.cpp 462 //===--------------------------------------------------------------------===// 463 464 SDValue GetScalarizedVector(SDValue Op) { 465 SDValue &ScalarizedOp = ScalarizedVectors[Op]; 466 RemapValue(ScalarizedOp); 467 assert(ScalarizedOp.getNode() && "Operand wasn't scalarized?"); 468 return ScalarizedOp; 469 } 470 void SetScalarizedVector(SDValue Op, SDValue Result); 471 472 // Vector Result Scalarization: <1 x ty> -> ty. 473 void ScalarizeVectorResult(SDNode *N, unsigned OpNo); 474 SDValue ScalarizeVecRes_BinOp(SDNode *N); 475 SDValue ScalarizeVecRes_UnaryOp(SDNode *N); 476 477 SDValue ScalarizeVecRes_BIT_CONVERT(SDNode *N); 478 SDValue ScalarizeVecRes_CONVERT_RNDSAT(SDNode *N); 479 SDValue ScalarizeVecRes_EXTRACT_SUBVECTOR(SDNode *N); 480 SDValue ScalarizeVecRes_FPOWI(SDNode *N); 481 SDValue ScalarizeVecRes_INSERT_VECTOR_ELT(SDNode *N); 482 SDValue ScalarizeVecRes_LOAD(LoadSDNode *N); 483 SDValue ScalarizeVecRes_SCALAR_TO_VECTOR(SDNode *N); 484 SDValue ScalarizeVecRes_SELECT(SDNode *N); 485 SDValue ScalarizeVecRes_SELECT_CC(SDNode *N); 486 SDValue ScalarizeVecRes_UNDEF(SDNode *N); 487 SDValue ScalarizeVecRes_VECTOR_SHUFFLE(SDNode *N); 488 SDValue ScalarizeVecRes_VSETCC(SDNode *N); 489 490 // Vector Operand Scalarization: <1 x ty> -> ty. 491 bool ScalarizeVectorOperand(SDNode *N, unsigned OpNo); 492 SDValue ScalarizeVecOp_BIT_CONVERT(SDNode *N); 493 SDValue ScalarizeVecOp_CONCAT_VECTORS(SDNode *N); 494 SDValue ScalarizeVecOp_EXTRACT_VECTOR_ELT(SDNode *N); 495 SDValue ScalarizeVecOp_STORE(StoreSDNode *N, unsigned OpNo); 496 497 //===--------------------------------------------------------------------===// 498 // Vector Splitting Support: LegalizeVectorTypes.cpp 499 //===--------------------------------------------------------------------===// 500 501 void GetSplitVector(SDValue Op, SDValue &Lo, SDValue &Hi); 502 void SetSplitVector(SDValue Op, SDValue Lo, SDValue Hi); 503 504 // Vector Result Splitting: <128 x ty> -> 2 x <64 x ty>. 505 void SplitVectorResult(SDNode *N, unsigned OpNo); 506 void SplitVecRes_BinOp(SDNode *N, SDValue &Lo, SDValue &Hi); 507 void SplitVecRes_UnaryOp(SDNode *N, SDValue &Lo, SDValue &Hi); 508 509 void SplitVecRes_BIT_CONVERT(SDNode *N, SDValue &Lo, SDValue &Hi); 510 void SplitVecRes_BUILD_PAIR(SDNode *N, SDValue &Lo, SDValue &Hi); 511 void SplitVecRes_BUILD_VECTOR(SDNode *N, SDValue &Lo, SDValue &Hi); 512 void SplitVecRes_CONCAT_VECTORS(SDNode *N, SDValue &Lo, SDValue &Hi); 513 void SplitVecRes_CONVERT_RNDSAT(SDNode *N, SDValue &Lo, SDValue &Hi); 514 void SplitVecRes_EXTRACT_SUBVECTOR(SDNode *N, SDValue &Lo, SDValue &Hi); 515 void SplitVecRes_FPOWI(SDNode *N, SDValue &Lo, SDValue &Hi); 516 void SplitVecRes_INSERT_VECTOR_ELT(SDNode *N, SDValue &Lo, SDValue &Hi); 517 void SplitVecRes_LOAD(LoadSDNode *N, SDValue &Lo, SDValue &Hi); 518 void SplitVecRes_SCALAR_TO_VECTOR(SDNode *N, SDValue &Lo, SDValue &Hi); 519 void SplitVecRes_UNDEF(SDNode *N, SDValue &Lo, SDValue &Hi); 520 void SplitVecRes_VECTOR_SHUFFLE(SDNode *N, SDValue &Lo, SDValue &Hi); 521 void SplitVecRes_VSETCC(SDNode *N, SDValue &Lo, SDValue &Hi); 522 523 // Vector Operand Splitting: <128 x ty> -> 2 x <64 x ty>. 524 bool SplitVectorOperand(SDNode *N, unsigned OpNo); 525 SDValue SplitVecOp_UnaryOp(SDNode *N); 526 527 SDValue SplitVecOp_BIT_CONVERT(SDNode *N); 528 SDValue SplitVecOp_EXTRACT_SUBVECTOR(SDNode *N); 529 SDValue SplitVecOp_EXTRACT_VECTOR_ELT(SDNode *N); 530 SDValue SplitVecOp_STORE(StoreSDNode *N, unsigned OpNo); 531 SDValue SplitVecOp_VECTOR_SHUFFLE(SDNode *N, unsigned OpNo); 532 533 //===--------------------------------------------------------------------===// 534 // Generic Splitting: LegalizeTypesGeneric.cpp 535 //===--------------------------------------------------------------------===// 536 537 // Legalization methods which only use that the illegal type is split into two 538 // not necessarily identical types. As such they can be used for splitting 539 // vectors and expanding integers and floats. 540 541 void GetSplitOp(SDValue Op, SDValue &Lo, SDValue &Hi) { 542 if (Op.getValueType().isVector()) 543 GetSplitVector(Op, Lo, Hi); 544 else if (Op.getValueType().isInteger()) 545 GetExpandedInteger(Op, Lo, Hi); 546 else 547 GetExpandedFloat(Op, Lo, Hi); 548 } 549 550 /// GetSplitDestVTs - Compute the VTs needed for the low/hi parts of a type 551 /// which is split (or expanded) into two not necessarily identical pieces. 552 void GetSplitDestVTs(MVT InVT, MVT &LoVT, MVT &HiVT); 553 554 // Generic Result Splitting. 555 void SplitRes_MERGE_VALUES(SDNode *N, SDValue &Lo, SDValue &Hi); 556 void SplitRes_SELECT (SDNode *N, SDValue &Lo, SDValue &Hi); 557 void SplitRes_SELECT_CC (SDNode *N, SDValue &Lo, SDValue &Hi); 558 void SplitRes_UNDEF (SDNode *N, SDValue &Lo, SDValue &Hi); 559 560 //===--------------------------------------------------------------------===// 561 // Generic Expansion: LegalizeTypesGeneric.cpp 562 //===--------------------------------------------------------------------===// 563 564 // Legalization methods which only use that the illegal type is split into two 565 // identical types of half the size, and that the Lo/Hi part is stored first 566 // in memory on little/big-endian machines, followed by the Hi/Lo part. As 567 // such they can be used for expanding integers and floats. 568 569 void GetExpandedOp(SDValue Op, SDValue &Lo, SDValue &Hi) { 570 if (Op.getValueType().isInteger()) 571 GetExpandedInteger(Op, Lo, Hi); 572 else 573 GetExpandedFloat(Op, Lo, Hi); 574 } 575 576 // Generic Result Expansion. 577 void ExpandRes_BIT_CONVERT (SDNode *N, SDValue &Lo, SDValue &Hi); 578 void ExpandRes_BUILD_PAIR (SDNode *N, SDValue &Lo, SDValue &Hi); 579 void ExpandRes_EXTRACT_ELEMENT (SDNode *N, SDValue &Lo, SDValue &Hi); 580 void ExpandRes_EXTRACT_VECTOR_ELT(SDNode *N, SDValue &Lo, SDValue &Hi); 581 void ExpandRes_NormalLoad (SDNode *N, SDValue &Lo, SDValue &Hi); 582 void ExpandRes_VAARG (SDNode *N, SDValue &Lo, SDValue &Hi); 583 584 // Generic Operand Expansion. 585 SDValue ExpandOp_BIT_CONVERT (SDNode *N); 586 SDValue ExpandOp_BUILD_VECTOR (SDNode *N); 587 SDValue ExpandOp_EXTRACT_ELEMENT(SDNode *N); 588 SDValue ExpandOp_NormalStore (SDNode *N, unsigned OpNo); 589 590}; 591 592} // end namespace llvm. 593 594#endif 595