LegalizeTypes.h revision 871e55f9c2bfb591aa085405b67be46bc646dee5
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, not before seen, that was created in the 46 /// process of legalizing some other node. 47 NewNode = -1, 48 49 /// Unanalyzed - This node's ID needs to be set to the number of its 50 /// unprocessed operands. 51 Unanalyzed = -2, 52 53 /// Processed - This is a node that has already been processed. 54 Processed = -3 55 56 // 1+ - This is a node which has this many unprocessed operands. 57 }; 58private: 59 enum LegalizeAction { 60 Legal, // The target natively supports this type. 61 PromoteInteger, // Replace this integer type with a larger one. 62 ExpandInteger, // Split this integer type into two of half the size. 63 SoftenFloat, // Convert this float type to a same size integer type. 64 ExpandFloat, // Split this float type into two of half the size. 65 ScalarizeVector, // Replace this one-element vector with its element type. 66 SplitVector // This vector type should be split into smaller vectors. 67 }; 68 69 /// ValueTypeActions - This is a bitvector that contains two bits for each 70 /// simple value type, where the two bits correspond to the LegalizeAction 71 /// enum from TargetLowering. This can be queried with "getTypeAction(VT)". 72 TargetLowering::ValueTypeActionImpl ValueTypeActions; 73 74 /// getTypeAction - Return how we should legalize values of this type, either 75 /// it is already legal, or we need to promote it to a larger integer type, or 76 /// we need to expand it into multiple registers of a smaller integer type, or 77 /// we need to split a vector type into smaller vector types, or we need to 78 /// convert it to a different type of the same size. 79 LegalizeAction getTypeAction(MVT VT) const { 80 switch (ValueTypeActions.getTypeAction(VT)) { 81 default: 82 assert(false && "Unknown legalize action!"); 83 case TargetLowering::Legal: 84 return Legal; 85 case TargetLowering::Promote: 86 // Promote can mean 87 // 1) For integers, use a larger integer type (e.g. i8 -> i32). 88 // 2) For vectors, use a wider vector type (e.g. v3i32 -> v4i32). 89 if (!VT.isVector()) 90 return PromoteInteger; 91 else if (VT.getVectorNumElements() == 1) 92 return ScalarizeVector; 93 else 94 // TODO: move widen code to LegalizeTypes. 95 return SplitVector; 96 case TargetLowering::Expand: 97 // Expand can mean 98 // 1) split scalar in half, 2) convert a float to an integer, 99 // 3) scalarize a single-element vector, 4) split a vector in two. 100 if (!VT.isVector()) { 101 if (VT.isInteger()) 102 return ExpandInteger; 103 else if (VT.getSizeInBits() == 104 TLI.getTypeToTransformTo(VT).getSizeInBits()) 105 return SoftenFloat; 106 else 107 return ExpandFloat; 108 } else if (VT.getVectorNumElements() == 1) { 109 return ScalarizeVector; 110 } else { 111 return SplitVector; 112 } 113 } 114 } 115 116 /// isTypeLegal - Return true if this type is legal on this target. 117 bool isTypeLegal(MVT VT) const { 118 return ValueTypeActions.getTypeAction(VT) == TargetLowering::Legal; 119 } 120 121 /// IgnoreNodeResults - Pretend all of this node's results are legal. 122 bool IgnoreNodeResults(SDNode *N) const { 123 return N->getOpcode() == ISD::TargetConstant; 124 } 125 126 /// PromotedIntegers - For integer nodes that are below legal width, this map 127 /// indicates what promoted value to use. 128 DenseMap<SDValue, SDValue> PromotedIntegers; 129 130 /// ExpandedIntegers - For integer nodes that need to be expanded this map 131 /// indicates which operands are the expanded version of the input. 132 DenseMap<SDValue, std::pair<SDValue, SDValue> > ExpandedIntegers; 133 134 /// SoftenedFloats - For floating point nodes converted to integers of 135 /// the same size, this map indicates the converted value to use. 136 DenseMap<SDValue, SDValue> SoftenedFloats; 137 138 /// ExpandedFloats - For float nodes that need to be expanded this map 139 /// indicates which operands are the expanded version of the input. 140 DenseMap<SDValue, std::pair<SDValue, SDValue> > ExpandedFloats; 141 142 /// ScalarizedVectors - For nodes that are <1 x ty>, this map indicates the 143 /// scalar value of type 'ty' to use. 144 DenseMap<SDValue, SDValue> ScalarizedVectors; 145 146 /// SplitVectors - For nodes that need to be split this map indicates 147 /// which operands are the expanded version of the input. 148 DenseMap<SDValue, std::pair<SDValue, SDValue> > SplitVectors; 149 150 /// ReplacedValues - For values that have been replaced with another, 151 /// indicates the replacement value to use. 152 DenseMap<SDValue, SDValue> ReplacedValues; 153 154 /// Worklist - This defines a worklist of nodes to process. In order to be 155 /// pushed onto this worklist, all operands of a node must have already been 156 /// processed. 157 SmallVector<SDNode*, 128> Worklist; 158 159public: 160 explicit DAGTypeLegalizer(SelectionDAG &dag) 161 : TLI(dag.getTargetLoweringInfo()), DAG(dag), 162 ValueTypeActions(TLI.getValueTypeActions()) { 163 assert(MVT::LAST_VALUETYPE <= 32 && 164 "Too many value types for ValueTypeActions to hold!"); 165 } 166 167 /// run - This is the main entry point for the type legalizer. This does a 168 /// top-down traversal of the dag, legalizing types as it goes. Returns 169 /// "true" if it made any changes. 170 bool run(); 171 172 void NoteDeletion(SDNode *Old, SDNode *New) { 173 ExpungeNode(Old); 174 ExpungeNode(New); 175 for (unsigned i = 0, e = Old->getNumValues(); i != e; ++i) 176 ReplacedValues[SDValue(Old, i)] = SDValue(New, i); 177 } 178 179private: 180 SDNode *AnalyzeNewNode(SDNode *N); 181 void AnalyzeNewValue(SDValue &Val); 182 void ExpungeNode(SDNode *N); 183 void PerformExpensiveChecks(); 184 void RemapValue(SDValue &N); 185 186 // Common routines. 187 void ReplaceValueWith(SDValue From, SDValue To); 188 189 bool CustomLowerResults(SDNode *N, unsigned ResNo); 190 191 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 low 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 SDValue PromoteIntRes_XADDO(SDNode *N, unsigned ResNo); 274 275 // Integer Operand Promotion. 276 bool PromoteIntegerOperand(SDNode *N, unsigned OperandNo); 277 SDValue PromoteIntOp_ANY_EXTEND(SDNode *N); 278 SDValue PromoteIntOp_BUILD_PAIR(SDNode *N); 279 SDValue PromoteIntOp_BR_CC(SDNode *N, unsigned OpNo); 280 SDValue PromoteIntOp_BRCOND(SDNode *N, unsigned OpNo); 281 SDValue PromoteIntOp_BUILD_VECTOR(SDNode *N); 282 SDValue PromoteIntOp_CONVERT_RNDSAT(SDNode *N); 283 SDValue PromoteIntOp_INSERT_VECTOR_ELT(SDNode *N, unsigned OpNo); 284 SDValue PromoteIntOp_MEMBARRIER(SDNode *N); 285 SDValue PromoteIntOp_SELECT(SDNode *N, unsigned OpNo); 286 SDValue PromoteIntOp_SELECT_CC(SDNode *N, unsigned OpNo); 287 SDValue PromoteIntOp_SETCC(SDNode *N, unsigned OpNo); 288 SDValue PromoteIntOp_SIGN_EXTEND(SDNode *N); 289 SDValue PromoteIntOp_SINT_TO_FP(SDNode *N); 290 SDValue PromoteIntOp_STORE(StoreSDNode *N, unsigned OpNo); 291 SDValue PromoteIntOp_TRUNCATE(SDNode *N); 292 SDValue PromoteIntOp_UINT_TO_FP(SDNode *N); 293 SDValue PromoteIntOp_ZERO_EXTEND(SDNode *N); 294 295 void PromoteSetCCOperands(SDValue &LHS,SDValue &RHS, ISD::CondCode Code); 296 297 //===--------------------------------------------------------------------===// 298 // Integer Expansion Support: LegalizeIntegerTypes.cpp 299 //===--------------------------------------------------------------------===// 300 301 /// GetExpandedInteger - Given a processed operand Op which was expanded into 302 /// two integers of half the size, this returns the two halves. The low bits 303 /// of Op are exactly equal to the bits of Lo; the high bits exactly equal Hi. 304 /// For example, if Op is an i64 which was expanded into two i32's, then this 305 /// method returns the two i32's, with Lo being equal to the lower 32 bits of 306 /// Op, and Hi being equal to the upper 32 bits. 307 void GetExpandedInteger(SDValue Op, SDValue &Lo, SDValue &Hi); 308 void SetExpandedInteger(SDValue Op, SDValue Lo, SDValue Hi); 309 310 // Integer Result Expansion. 311 void ExpandIntegerResult(SDNode *N, unsigned ResNo); 312 void ExpandIntRes_ANY_EXTEND (SDNode *N, SDValue &Lo, SDValue &Hi); 313 void ExpandIntRes_AssertSext (SDNode *N, SDValue &Lo, SDValue &Hi); 314 void ExpandIntRes_AssertZext (SDNode *N, SDValue &Lo, SDValue &Hi); 315 void ExpandIntRes_Constant (SDNode *N, SDValue &Lo, SDValue &Hi); 316 void ExpandIntRes_CTLZ (SDNode *N, SDValue &Lo, SDValue &Hi); 317 void ExpandIntRes_CTPOP (SDNode *N, SDValue &Lo, SDValue &Hi); 318 void ExpandIntRes_CTTZ (SDNode *N, SDValue &Lo, SDValue &Hi); 319 void ExpandIntRes_LOAD (LoadSDNode *N, SDValue &Lo, SDValue &Hi); 320 void ExpandIntRes_SIGN_EXTEND (SDNode *N, SDValue &Lo, SDValue &Hi); 321 void ExpandIntRes_SIGN_EXTEND_INREG (SDNode *N, SDValue &Lo, SDValue &Hi); 322 void ExpandIntRes_TRUNCATE (SDNode *N, SDValue &Lo, SDValue &Hi); 323 void ExpandIntRes_ZERO_EXTEND (SDNode *N, SDValue &Lo, SDValue &Hi); 324 void ExpandIntRes_FP_TO_SINT (SDNode *N, SDValue &Lo, SDValue &Hi); 325 void ExpandIntRes_FP_TO_UINT (SDNode *N, SDValue &Lo, SDValue &Hi); 326 327 void ExpandIntRes_Logical (SDNode *N, SDValue &Lo, SDValue &Hi); 328 void ExpandIntRes_ADDSUB (SDNode *N, SDValue &Lo, SDValue &Hi); 329 void ExpandIntRes_ADDSUBC (SDNode *N, SDValue &Lo, SDValue &Hi); 330 void ExpandIntRes_ADDSUBE (SDNode *N, SDValue &Lo, SDValue &Hi); 331 void ExpandIntRes_BSWAP (SDNode *N, SDValue &Lo, SDValue &Hi); 332 void ExpandIntRes_MUL (SDNode *N, SDValue &Lo, SDValue &Hi); 333 void ExpandIntRes_SDIV (SDNode *N, SDValue &Lo, SDValue &Hi); 334 void ExpandIntRes_SREM (SDNode *N, SDValue &Lo, SDValue &Hi); 335 void ExpandIntRes_UDIV (SDNode *N, SDValue &Lo, SDValue &Hi); 336 void ExpandIntRes_UREM (SDNode *N, SDValue &Lo, SDValue &Hi); 337 void ExpandIntRes_Shift (SDNode *N, SDValue &Lo, SDValue &Hi); 338 339 void ExpandShiftByConstant(SDNode *N, unsigned Amt, 340 SDValue &Lo, SDValue &Hi); 341 bool ExpandShiftWithKnownAmountBit(SDNode *N, SDValue &Lo, SDValue &Hi); 342 343 // Integer Operand Expansion. 344 bool ExpandIntegerOperand(SDNode *N, unsigned OperandNo); 345 SDValue ExpandIntOp_BIT_CONVERT(SDNode *N); 346 SDValue ExpandIntOp_BR_CC(SDNode *N); 347 SDValue ExpandIntOp_BUILD_VECTOR(SDNode *N); 348 SDValue ExpandIntOp_EXTRACT_ELEMENT(SDNode *N); 349 SDValue ExpandIntOp_SELECT_CC(SDNode *N); 350 SDValue ExpandIntOp_SETCC(SDNode *N); 351 SDValue ExpandIntOp_SINT_TO_FP(SDNode *N); 352 SDValue ExpandIntOp_STORE(StoreSDNode *N, unsigned OpNo); 353 SDValue ExpandIntOp_TRUNCATE(SDNode *N); 354 SDValue ExpandIntOp_UINT_TO_FP(SDNode *N); 355 356 void IntegerExpandSetCCOperands(SDValue &NewLHS, SDValue &NewRHS, 357 ISD::CondCode &CCCode); 358 359 //===--------------------------------------------------------------------===// 360 // Float to Integer Conversion Support: LegalizeFloatTypes.cpp 361 //===--------------------------------------------------------------------===// 362 363 /// GetSoftenedFloat - Given a processed operand Op which was converted to an 364 /// integer of the same size, this returns the integer. The integer contains 365 /// exactly the same bits as Op - only the type changed. For example, if Op 366 /// is an f32 which was softened to an i32, then this method returns an i32, 367 /// the bits of which coincide with those of Op. 368 SDValue GetSoftenedFloat(SDValue Op) { 369 SDValue &SoftenedOp = SoftenedFloats[Op]; 370 RemapValue(SoftenedOp); 371 assert(SoftenedOp.getNode() && "Operand wasn't converted to integer?"); 372 return SoftenedOp; 373 } 374 void SetSoftenedFloat(SDValue Op, SDValue Result); 375 376 // Result Float to Integer Conversion. 377 void SoftenFloatResult(SDNode *N, unsigned OpNo); 378 SDValue SoftenFloatRes_BIT_CONVERT(SDNode *N); 379 SDValue SoftenFloatRes_BUILD_PAIR(SDNode *N); 380 SDValue SoftenFloatRes_ConstantFP(ConstantFPSDNode *N); 381 SDValue SoftenFloatRes_FABS(SDNode *N); 382 SDValue SoftenFloatRes_FADD(SDNode *N); 383 SDValue SoftenFloatRes_FCEIL(SDNode *N); 384 SDValue SoftenFloatRes_FCOPYSIGN(SDNode *N); 385 SDValue SoftenFloatRes_FCOS(SDNode *N); 386 SDValue SoftenFloatRes_FDIV(SDNode *N); 387 SDValue SoftenFloatRes_FEXP(SDNode *N); 388 SDValue SoftenFloatRes_FEXP2(SDNode *N); 389 SDValue SoftenFloatRes_FFLOOR(SDNode *N); 390 SDValue SoftenFloatRes_FLOG(SDNode *N); 391 SDValue SoftenFloatRes_FLOG2(SDNode *N); 392 SDValue SoftenFloatRes_FLOG10(SDNode *N); 393 SDValue SoftenFloatRes_FMUL(SDNode *N); 394 SDValue SoftenFloatRes_FNEARBYINT(SDNode *N); 395 SDValue SoftenFloatRes_FNEG(SDNode *N); 396 SDValue SoftenFloatRes_FP_EXTEND(SDNode *N); 397 SDValue SoftenFloatRes_FP_ROUND(SDNode *N); 398 SDValue SoftenFloatRes_FPOW(SDNode *N); 399 SDValue SoftenFloatRes_FPOWI(SDNode *N); 400 SDValue SoftenFloatRes_FRINT(SDNode *N); 401 SDValue SoftenFloatRes_FSIN(SDNode *N); 402 SDValue SoftenFloatRes_FSQRT(SDNode *N); 403 SDValue SoftenFloatRes_FSUB(SDNode *N); 404 SDValue SoftenFloatRes_FTRUNC(SDNode *N); 405 SDValue SoftenFloatRes_LOAD(SDNode *N); 406 SDValue SoftenFloatRes_SELECT(SDNode *N); 407 SDValue SoftenFloatRes_SELECT_CC(SDNode *N); 408 SDValue SoftenFloatRes_XINT_TO_FP(SDNode *N); 409 410 // Operand Float to Integer Conversion. 411 bool SoftenFloatOperand(SDNode *N, unsigned OpNo); 412 SDValue SoftenFloatOp_BIT_CONVERT(SDNode *N); 413 SDValue SoftenFloatOp_BR_CC(SDNode *N); 414 SDValue SoftenFloatOp_FP_ROUND(SDNode *N); 415 SDValue SoftenFloatOp_FP_TO_SINT(SDNode *N); 416 SDValue SoftenFloatOp_FP_TO_UINT(SDNode *N); 417 SDValue SoftenFloatOp_SELECT_CC(SDNode *N); 418 SDValue SoftenFloatOp_SETCC(SDNode *N); 419 SDValue SoftenFloatOp_STORE(SDNode *N, unsigned OpNo); 420 421 void SoftenSetCCOperands(SDValue &NewLHS, SDValue &NewRHS, 422 ISD::CondCode &CCCode); 423 424 //===--------------------------------------------------------------------===// 425 // Float Expansion Support: LegalizeFloatTypes.cpp 426 //===--------------------------------------------------------------------===// 427 428 /// GetExpandedFloat - Given a processed operand Op which was expanded into 429 /// two floating point values of half the size, this returns the two halves. 430 /// The low bits of Op are exactly equal to the bits of Lo; the high bits 431 /// exactly equal Hi. For example, if Op is a ppcf128 which was expanded 432 /// into two f64's, then this method returns the two f64's, with Lo being 433 /// equal to the lower 64 bits of Op, and Hi to the upper 64 bits. 434 void GetExpandedFloat(SDValue Op, SDValue &Lo, SDValue &Hi); 435 void SetExpandedFloat(SDValue Op, SDValue Lo, SDValue Hi); 436 437 // Float Result Expansion. 438 void ExpandFloatResult(SDNode *N, unsigned ResNo); 439 void ExpandFloatRes_ConstantFP(SDNode *N, SDValue &Lo, SDValue &Hi); 440 void ExpandFloatRes_FABS (SDNode *N, SDValue &Lo, SDValue &Hi); 441 void ExpandFloatRes_FADD (SDNode *N, SDValue &Lo, SDValue &Hi); 442 void ExpandFloatRes_FCEIL (SDNode *N, SDValue &Lo, SDValue &Hi); 443 void ExpandFloatRes_FCOS (SDNode *N, SDValue &Lo, SDValue &Hi); 444 void ExpandFloatRes_FDIV (SDNode *N, SDValue &Lo, SDValue &Hi); 445 void ExpandFloatRes_FEXP (SDNode *N, SDValue &Lo, SDValue &Hi); 446 void ExpandFloatRes_FEXP2 (SDNode *N, SDValue &Lo, SDValue &Hi); 447 void ExpandFloatRes_FFLOOR (SDNode *N, SDValue &Lo, SDValue &Hi); 448 void ExpandFloatRes_FLOG (SDNode *N, SDValue &Lo, SDValue &Hi); 449 void ExpandFloatRes_FLOG2 (SDNode *N, SDValue &Lo, SDValue &Hi); 450 void ExpandFloatRes_FLOG10 (SDNode *N, SDValue &Lo, SDValue &Hi); 451 void ExpandFloatRes_FMUL (SDNode *N, SDValue &Lo, SDValue &Hi); 452 void ExpandFloatRes_FNEARBYINT(SDNode *N, SDValue &Lo, SDValue &Hi); 453 void ExpandFloatRes_FNEG (SDNode *N, SDValue &Lo, SDValue &Hi); 454 void ExpandFloatRes_FP_EXTEND (SDNode *N, SDValue &Lo, SDValue &Hi); 455 void ExpandFloatRes_FPOW (SDNode *N, SDValue &Lo, SDValue &Hi); 456 void ExpandFloatRes_FPOWI (SDNode *N, SDValue &Lo, SDValue &Hi); 457 void ExpandFloatRes_FRINT (SDNode *N, SDValue &Lo, SDValue &Hi); 458 void ExpandFloatRes_FSIN (SDNode *N, SDValue &Lo, SDValue &Hi); 459 void ExpandFloatRes_FSQRT (SDNode *N, SDValue &Lo, SDValue &Hi); 460 void ExpandFloatRes_FSUB (SDNode *N, SDValue &Lo, SDValue &Hi); 461 void ExpandFloatRes_FTRUNC (SDNode *N, SDValue &Lo, SDValue &Hi); 462 void ExpandFloatRes_LOAD (SDNode *N, SDValue &Lo, SDValue &Hi); 463 void ExpandFloatRes_XINT_TO_FP(SDNode *N, SDValue &Lo, SDValue &Hi); 464 465 // Float Operand Expansion. 466 bool ExpandFloatOperand(SDNode *N, unsigned OperandNo); 467 SDValue ExpandFloatOp_BR_CC(SDNode *N); 468 SDValue ExpandFloatOp_FP_ROUND(SDNode *N); 469 SDValue ExpandFloatOp_FP_TO_SINT(SDNode *N); 470 SDValue ExpandFloatOp_FP_TO_UINT(SDNode *N); 471 SDValue ExpandFloatOp_SELECT_CC(SDNode *N); 472 SDValue ExpandFloatOp_SETCC(SDNode *N); 473 SDValue ExpandFloatOp_STORE(SDNode *N, unsigned OpNo); 474 475 void FloatExpandSetCCOperands(SDValue &NewLHS, SDValue &NewRHS, 476 ISD::CondCode &CCCode); 477 478 //===--------------------------------------------------------------------===// 479 // Scalarization Support: LegalizeVectorTypes.cpp 480 //===--------------------------------------------------------------------===// 481 482 /// GetScalarizedVector - Given a processed one-element vector Op which was 483 /// scalarized to its element type, this returns the element. For example, 484 /// if Op is a v1i32, Op = < i32 val >, this method returns val, an i32. 485 SDValue GetScalarizedVector(SDValue Op) { 486 SDValue &ScalarizedOp = ScalarizedVectors[Op]; 487 RemapValue(ScalarizedOp); 488 assert(ScalarizedOp.getNode() && "Operand wasn't scalarized?"); 489 return ScalarizedOp; 490 } 491 void SetScalarizedVector(SDValue Op, SDValue Result); 492 493 // Vector Result Scalarization: <1 x ty> -> ty. 494 void ScalarizeVectorResult(SDNode *N, unsigned OpNo); 495 SDValue ScalarizeVecRes_BinOp(SDNode *N); 496 SDValue ScalarizeVecRes_UnaryOp(SDNode *N); 497 498 SDValue ScalarizeVecRes_BIT_CONVERT(SDNode *N); 499 SDValue ScalarizeVecRes_CONVERT_RNDSAT(SDNode *N); 500 SDValue ScalarizeVecRes_EXTRACT_SUBVECTOR(SDNode *N); 501 SDValue ScalarizeVecRes_FPOWI(SDNode *N); 502 SDValue ScalarizeVecRes_INSERT_VECTOR_ELT(SDNode *N); 503 SDValue ScalarizeVecRes_LOAD(LoadSDNode *N); 504 SDValue ScalarizeVecRes_SCALAR_TO_VECTOR(SDNode *N); 505 SDValue ScalarizeVecRes_SELECT(SDNode *N); 506 SDValue ScalarizeVecRes_SELECT_CC(SDNode *N); 507 SDValue ScalarizeVecRes_UNDEF(SDNode *N); 508 SDValue ScalarizeVecRes_VECTOR_SHUFFLE(SDNode *N); 509 SDValue ScalarizeVecRes_VSETCC(SDNode *N); 510 511 // Vector Operand Scalarization: <1 x ty> -> ty. 512 bool ScalarizeVectorOperand(SDNode *N, unsigned OpNo); 513 SDValue ScalarizeVecOp_BIT_CONVERT(SDNode *N); 514 SDValue ScalarizeVecOp_CONCAT_VECTORS(SDNode *N); 515 SDValue ScalarizeVecOp_EXTRACT_VECTOR_ELT(SDNode *N); 516 SDValue ScalarizeVecOp_STORE(StoreSDNode *N, unsigned OpNo); 517 518 //===--------------------------------------------------------------------===// 519 // Vector Splitting Support: LegalizeVectorTypes.cpp 520 //===--------------------------------------------------------------------===// 521 522 /// GetSplitVector - Given a processed vector Op which was split into smaller 523 /// vectors, this method returns the smaller vectors. The first elements of 524 /// Op coincide with the elements of Lo; the remaining elements of Op coincide 525 /// with the elements of Hi: Op is what you would get by concatenating Lo and 526 /// Hi. For example, if Op is a v8i32 that was split into two v4i32's, then 527 /// this method returns the two v4i32's, with Lo corresponding to the first 4 528 /// elements of Op, and Hi to the last 4 elements. 529 void GetSplitVector(SDValue Op, SDValue &Lo, SDValue &Hi); 530 void SetSplitVector(SDValue Op, SDValue Lo, SDValue Hi); 531 532 // Vector Result Splitting: <128 x ty> -> 2 x <64 x ty>. 533 void SplitVectorResult(SDNode *N, unsigned OpNo); 534 void SplitVecRes_BinOp(SDNode *N, SDValue &Lo, SDValue &Hi); 535 void SplitVecRes_UnaryOp(SDNode *N, SDValue &Lo, SDValue &Hi); 536 537 void SplitVecRes_BIT_CONVERT(SDNode *N, SDValue &Lo, SDValue &Hi); 538 void SplitVecRes_BUILD_PAIR(SDNode *N, SDValue &Lo, SDValue &Hi); 539 void SplitVecRes_BUILD_VECTOR(SDNode *N, SDValue &Lo, SDValue &Hi); 540 void SplitVecRes_CONCAT_VECTORS(SDNode *N, SDValue &Lo, SDValue &Hi); 541 void SplitVecRes_CONVERT_RNDSAT(SDNode *N, SDValue &Lo, SDValue &Hi); 542 void SplitVecRes_EXTRACT_SUBVECTOR(SDNode *N, SDValue &Lo, SDValue &Hi); 543 void SplitVecRes_FPOWI(SDNode *N, SDValue &Lo, SDValue &Hi); 544 void SplitVecRes_INSERT_VECTOR_ELT(SDNode *N, SDValue &Lo, SDValue &Hi); 545 void SplitVecRes_LOAD(LoadSDNode *N, SDValue &Lo, SDValue &Hi); 546 void SplitVecRes_SCALAR_TO_VECTOR(SDNode *N, SDValue &Lo, SDValue &Hi); 547 void SplitVecRes_UNDEF(SDNode *N, SDValue &Lo, SDValue &Hi); 548 void SplitVecRes_VECTOR_SHUFFLE(SDNode *N, SDValue &Lo, SDValue &Hi); 549 void SplitVecRes_VSETCC(SDNode *N, SDValue &Lo, SDValue &Hi); 550 551 // Vector Operand Splitting: <128 x ty> -> 2 x <64 x ty>. 552 bool SplitVectorOperand(SDNode *N, unsigned OpNo); 553 SDValue SplitVecOp_UnaryOp(SDNode *N); 554 555 SDValue SplitVecOp_BIT_CONVERT(SDNode *N); 556 SDValue SplitVecOp_EXTRACT_SUBVECTOR(SDNode *N); 557 SDValue SplitVecOp_EXTRACT_VECTOR_ELT(SDNode *N); 558 SDValue SplitVecOp_STORE(StoreSDNode *N, unsigned OpNo); 559 SDValue SplitVecOp_VECTOR_SHUFFLE(SDNode *N, unsigned OpNo); 560 561 //===--------------------------------------------------------------------===// 562 // Generic Splitting: LegalizeTypesGeneric.cpp 563 //===--------------------------------------------------------------------===// 564 565 // Legalization methods which only use that the illegal type is split into two 566 // not necessarily identical types. As such they can be used for splitting 567 // vectors and expanding integers and floats. 568 569 void GetSplitOp(SDValue Op, SDValue &Lo, SDValue &Hi) { 570 if (Op.getValueType().isVector()) 571 GetSplitVector(Op, Lo, Hi); 572 else if (Op.getValueType().isInteger()) 573 GetExpandedInteger(Op, Lo, Hi); 574 else 575 GetExpandedFloat(Op, Lo, Hi); 576 } 577 578 /// GetSplitDestVTs - Compute the VTs needed for the low/hi parts of a type 579 /// which is split (or expanded) into two not necessarily identical pieces. 580 void GetSplitDestVTs(MVT InVT, MVT &LoVT, MVT &HiVT); 581 582 // Generic Result Splitting. 583 void SplitRes_MERGE_VALUES(SDNode *N, SDValue &Lo, SDValue &Hi); 584 void SplitRes_SELECT (SDNode *N, SDValue &Lo, SDValue &Hi); 585 void SplitRes_SELECT_CC (SDNode *N, SDValue &Lo, SDValue &Hi); 586 void SplitRes_UNDEF (SDNode *N, SDValue &Lo, SDValue &Hi); 587 588 //===--------------------------------------------------------------------===// 589 // Generic Expansion: LegalizeTypesGeneric.cpp 590 //===--------------------------------------------------------------------===// 591 592 // Legalization methods which only use that the illegal type is split into two 593 // identical types of half the size, and that the Lo/Hi part is stored first 594 // in memory on little/big-endian machines, followed by the Hi/Lo part. As 595 // such they can be used for expanding integers and floats. 596 597 void GetExpandedOp(SDValue Op, SDValue &Lo, SDValue &Hi) { 598 if (Op.getValueType().isInteger()) 599 GetExpandedInteger(Op, Lo, Hi); 600 else 601 GetExpandedFloat(Op, Lo, Hi); 602 } 603 604 // Generic Result Expansion. 605 void ExpandRes_BIT_CONVERT (SDNode *N, SDValue &Lo, SDValue &Hi); 606 void ExpandRes_BUILD_PAIR (SDNode *N, SDValue &Lo, SDValue &Hi); 607 void ExpandRes_EXTRACT_ELEMENT (SDNode *N, SDValue &Lo, SDValue &Hi); 608 void ExpandRes_EXTRACT_VECTOR_ELT(SDNode *N, SDValue &Lo, SDValue &Hi); 609 void ExpandRes_NormalLoad (SDNode *N, SDValue &Lo, SDValue &Hi); 610 void ExpandRes_VAARG (SDNode *N, SDValue &Lo, SDValue &Hi); 611 612 // Generic Operand Expansion. 613 SDValue ExpandOp_BIT_CONVERT (SDNode *N); 614 SDValue ExpandOp_BUILD_VECTOR (SDNode *N); 615 SDValue ExpandOp_EXTRACT_ELEMENT(SDNode *N); 616 SDValue ExpandOp_NormalStore (SDNode *N, unsigned OpNo); 617 618}; 619 620} // end namespace llvm. 621 622#endif 623