LegalizeTypes.h revision bf17cfa3f904e488e898ac2e3af706fd1a892f08
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/ADT/DenseSet.h" 24#include "llvm/Support/Compiler.h" 25#include "llvm/Support/Debug.h" 26 27namespace llvm { 28 29//===----------------------------------------------------------------------===// 30/// DAGTypeLegalizer - This takes an arbitrary SelectionDAG as input and hacks 31/// on it until only value types the target machine can handle are left. This 32/// involves promoting small sizes to large sizes or splitting up large values 33/// into small values. 34/// 35class LLVM_LIBRARY_VISIBILITY DAGTypeLegalizer { 36 const TargetLowering &TLI; 37 SelectionDAG &DAG; 38public: 39 // NodeIdFlags - This pass uses the NodeId on the SDNodes to hold information 40 // about the state of the node. The enum has all the values. 41 enum NodeIdFlags { 42 /// ReadyToProcess - All operands have been processed, so this node is ready 43 /// to be handled. 44 ReadyToProcess = 0, 45 46 /// NewNode - This is a new node, not before seen, that was created in the 47 /// process of legalizing some other node. 48 NewNode = -1, 49 50 /// Unanalyzed - This node's ID needs to be set to the number of its 51 /// unprocessed operands. 52 Unanalyzed = -2, 53 54 /// Processed - This is a node that has already been processed. 55 Processed = -3 56 57 // 1+ - This is a node which has this many unprocessed operands. 58 }; 59private: 60 enum LegalizeAction { 61 Legal, // The target natively supports this type. 62 PromoteInteger, // Replace this integer type with a larger one. 63 ExpandInteger, // Split this integer type into two of half the size. 64 SoftenFloat, // Convert this float type to a same size integer type. 65 ExpandFloat, // Split this float type into two of half the size. 66 ScalarizeVector, // Replace this one-element vector with its element type. 67 SplitVector, // Split this vector type into two of half the size. 68 WidenVector // This vector type should be widened into a larger vector. 69 }; 70 71 /// ValueTypeActions - This is a bitvector that contains two bits for each 72 /// simple value type, where the two bits correspond to the LegalizeAction 73 /// enum from TargetLowering. This can be queried with "getTypeAction(VT)". 74 TargetLowering::ValueTypeActionImpl ValueTypeActions; 75 76 /// getTypeAction - Return how we should legalize values of this type. 77 LegalizeAction getTypeAction(EVT VT) const { 78 switch (ValueTypeActions.getTypeAction(VT)) { 79 default: 80 assert(false && "Unknown legalize action!"); 81 case TargetLowering::Legal: 82 return Legal; 83 case TargetLowering::Promote: 84 // Promote can mean 85 // 1) For integers, use a larger integer type (e.g. i8 -> i32). 86 // 2) For vectors, use a wider vector type (e.g. v3i32 -> v4i32). 87 if (!VT.isVector()) 88 return PromoteInteger; 89 return WidenVector; 90 case TargetLowering::Expand: 91 // Expand can mean 92 // 1) split scalar in half, 2) convert a float to an integer, 93 // 3) scalarize a single-element vector, 4) split a vector in two. 94 if (!VT.isVector()) { 95 if (VT.isInteger()) 96 return ExpandInteger; 97 if (VT.getSizeInBits() == 98 TLI.getTypeToTransformTo(*DAG.getContext(), VT).getSizeInBits()) 99 return SoftenFloat; 100 return ExpandFloat; 101 } 102 103 if (VT.getVectorNumElements() == 1) 104 return ScalarizeVector; 105 return SplitVector; 106 } 107 } 108 109 /// isTypeLegal - Return true if this type is legal on this target. 110 bool isTypeLegal(EVT VT) const { 111 return ValueTypeActions.getTypeAction(VT) == TargetLowering::Legal; 112 } 113 114 /// IgnoreNodeResults - Pretend all of this node's results are legal. 115 bool IgnoreNodeResults(SDNode *N) const { 116 return N->getOpcode() == ISD::TargetConstant; 117 } 118 119 /// PromotedIntegers - For integer nodes that are below legal width, this map 120 /// indicates what promoted value to use. 121 DenseMap<SDValue, SDValue> PromotedIntegers; 122 123 /// ExpandedIntegers - For integer nodes that need to be expanded this map 124 /// indicates which operands are the expanded version of the input. 125 DenseMap<SDValue, std::pair<SDValue, SDValue> > ExpandedIntegers; 126 127 /// SoftenedFloats - For floating point nodes converted to integers of 128 /// the same size, this map indicates the converted value to use. 129 DenseMap<SDValue, SDValue> SoftenedFloats; 130 131 /// ExpandedFloats - For float nodes that need to be expanded this map 132 /// indicates which operands are the expanded version of the input. 133 DenseMap<SDValue, std::pair<SDValue, SDValue> > ExpandedFloats; 134 135 /// ScalarizedVectors - For nodes that are <1 x ty>, this map indicates the 136 /// scalar value of type 'ty' to use. 137 DenseMap<SDValue, SDValue> ScalarizedVectors; 138 139 /// SplitVectors - For nodes that need to be split this map indicates 140 /// which operands are the expanded version of the input. 141 DenseMap<SDValue, std::pair<SDValue, SDValue> > SplitVectors; 142 143 /// WidenedVectors - For vector nodes that need to be widened, indicates 144 /// the widened value to use. 145 DenseMap<SDValue, SDValue> WidenedVectors; 146 147 /// ReplacedValues - For values that have been replaced with another, 148 /// indicates the replacement value to use. 149 DenseMap<SDValue, SDValue> ReplacedValues; 150 151 /// Worklist - This defines a worklist of nodes to process. In order to be 152 /// pushed onto this worklist, all operands of a node must have already been 153 /// processed. 154 SmallVector<SDNode*, 128> Worklist; 155 156public: 157 explicit DAGTypeLegalizer(SelectionDAG &dag) 158 : TLI(dag.getTargetLoweringInfo()), DAG(dag), 159 ValueTypeActions(TLI.getValueTypeActions()) { 160 assert(MVT::LAST_VALUETYPE <= MVT::MAX_ALLOWED_VALUETYPE && 161 "Too many value types for ValueTypeActions to hold!"); 162 } 163 164 /// run - This is the main entry point for the type legalizer. This does a 165 /// top-down traversal of the dag, legalizing types as it goes. Returns 166 /// "true" if it made any changes. 167 bool run(); 168 169 void NoteDeletion(SDNode *Old, SDNode *New) { 170 ExpungeNode(Old); 171 ExpungeNode(New); 172 for (unsigned i = 0, e = Old->getNumValues(); i != e; ++i) 173 ReplacedValues[SDValue(Old, i)] = SDValue(New, i); 174 } 175 176private: 177 SDNode *AnalyzeNewNode(SDNode *N); 178 void AnalyzeNewValue(SDValue &Val); 179 void ExpungeNode(SDNode *N); 180 void PerformExpensiveChecks(); 181 void RemapValue(SDValue &N); 182 183 // Common routines. 184 SDValue BitConvertToInteger(SDValue Op); 185 SDValue BitConvertVectorToIntegerVector(SDValue Op); 186 SDValue CreateStackStoreLoad(SDValue Op, EVT DestVT); 187 bool CustomLowerNode(SDNode *N, EVT VT, bool LegalizeResult); 188 bool CustomWidenLowerNode(SDNode *N, EVT VT); 189 SDValue GetVectorElementPointer(SDValue VecPtr, EVT EltVT, SDValue Index); 190 SDValue JoinIntegers(SDValue Lo, SDValue Hi); 191 SDValue LibCallify(RTLIB::Libcall LC, SDNode *N, bool isSigned); 192 SDValue MakeLibCall(RTLIB::Libcall LC, EVT RetVT, 193 const SDValue *Ops, unsigned NumOps, bool isSigned, 194 DebugLoc dl); 195 SDValue PromoteTargetBoolean(SDValue Bool, EVT VT); 196 void ReplaceValueWith(SDValue From, SDValue To); 197 void SplitInteger(SDValue Op, SDValue &Lo, SDValue &Hi); 198 void SplitInteger(SDValue Op, EVT LoVT, EVT HiVT, 199 SDValue &Lo, SDValue &Hi); 200 201 //===--------------------------------------------------------------------===// 202 // Integer Promotion Support: LegalizeIntegerTypes.cpp 203 //===--------------------------------------------------------------------===// 204 205 /// GetPromotedInteger - Given a processed operand Op which was promoted to a 206 /// larger integer type, this returns the promoted value. The low bits of the 207 /// promoted value corresponding to the original type are exactly equal to Op. 208 /// The extra bits contain rubbish, so the promoted value may need to be zero- 209 /// or sign-extended from the original type before it is usable (the helpers 210 /// SExtPromotedInteger and ZExtPromotedInteger can do this for you). 211 /// For example, if Op is an i16 and was promoted to an i32, then this method 212 /// returns an i32, the lower 16 bits of which coincide with Op, and the upper 213 /// 16 bits of which contain rubbish. 214 SDValue GetPromotedInteger(SDValue Op) { 215 SDValue &PromotedOp = PromotedIntegers[Op]; 216 RemapValue(PromotedOp); 217 assert(PromotedOp.getNode() && "Operand wasn't promoted?"); 218 return PromotedOp; 219 } 220 void SetPromotedInteger(SDValue Op, SDValue Result); 221 222 /// SExtPromotedInteger - Get a promoted operand and sign extend it to the 223 /// final size. 224 SDValue SExtPromotedInteger(SDValue Op) { 225 EVT OldVT = Op.getValueType(); 226 DebugLoc dl = Op.getDebugLoc(); 227 Op = GetPromotedInteger(Op); 228 return DAG.getNode(ISD::SIGN_EXTEND_INREG, dl, Op.getValueType(), Op, 229 DAG.getValueType(OldVT)); 230 } 231 232 /// ZExtPromotedInteger - Get a promoted operand and zero extend it to the 233 /// final size. 234 SDValue ZExtPromotedInteger(SDValue Op) { 235 EVT OldVT = Op.getValueType(); 236 DebugLoc dl = Op.getDebugLoc(); 237 Op = GetPromotedInteger(Op); 238 return DAG.getZeroExtendInReg(Op, dl, OldVT); 239 } 240 241 // Integer Result Promotion. 242 void PromoteIntegerResult(SDNode *N, unsigned ResNo); 243 SDValue PromoteIntRes_AssertSext(SDNode *N); 244 SDValue PromoteIntRes_AssertZext(SDNode *N); 245 SDValue PromoteIntRes_Atomic1(AtomicSDNode *N); 246 SDValue PromoteIntRes_Atomic2(AtomicSDNode *N); 247 SDValue PromoteIntRes_BITCAST(SDNode *N); 248 SDValue PromoteIntRes_BSWAP(SDNode *N); 249 SDValue PromoteIntRes_BUILD_PAIR(SDNode *N); 250 SDValue PromoteIntRes_Constant(SDNode *N); 251 SDValue PromoteIntRes_CONVERT_RNDSAT(SDNode *N); 252 SDValue PromoteIntRes_CTLZ(SDNode *N); 253 SDValue PromoteIntRes_CTPOP(SDNode *N); 254 SDValue PromoteIntRes_CTTZ(SDNode *N); 255 SDValue PromoteIntRes_EXTRACT_VECTOR_ELT(SDNode *N); 256 SDValue PromoteIntRes_FP_TO_XINT(SDNode *N); 257 SDValue PromoteIntRes_FP32_TO_FP16(SDNode *N); 258 SDValue PromoteIntRes_INT_EXTEND(SDNode *N); 259 SDValue PromoteIntRes_LOAD(LoadSDNode *N); 260 SDValue PromoteIntRes_Overflow(SDNode *N); 261 SDValue PromoteIntRes_SADDSUBO(SDNode *N, unsigned ResNo); 262 SDValue PromoteIntRes_SDIV(SDNode *N); 263 SDValue PromoteIntRes_SELECT(SDNode *N); 264 SDValue PromoteIntRes_SELECT_CC(SDNode *N); 265 SDValue PromoteIntRes_SETCC(SDNode *N); 266 SDValue PromoteIntRes_SHL(SDNode *N); 267 SDValue PromoteIntRes_SimpleIntBinOp(SDNode *N); 268 SDValue PromoteIntRes_SIGN_EXTEND_INREG(SDNode *N); 269 SDValue PromoteIntRes_SRA(SDNode *N); 270 SDValue PromoteIntRes_SRL(SDNode *N); 271 SDValue PromoteIntRes_TRUNCATE(SDNode *N); 272 SDValue PromoteIntRes_UADDSUBO(SDNode *N, unsigned ResNo); 273 SDValue PromoteIntRes_UDIV(SDNode *N); 274 SDValue PromoteIntRes_UNDEF(SDNode *N); 275 SDValue PromoteIntRes_VAARG(SDNode *N); 276 SDValue PromoteIntRes_XMULO(SDNode *N, unsigned ResNo); 277 278 // Integer Operand Promotion. 279 bool PromoteIntegerOperand(SDNode *N, unsigned OperandNo); 280 SDValue PromoteIntOp_ANY_EXTEND(SDNode *N); 281 SDValue PromoteIntOp_BITCAST(SDNode *N); 282 SDValue PromoteIntOp_BUILD_PAIR(SDNode *N); 283 SDValue PromoteIntOp_BR_CC(SDNode *N, unsigned OpNo); 284 SDValue PromoteIntOp_BRCOND(SDNode *N, unsigned OpNo); 285 SDValue PromoteIntOp_BUILD_VECTOR(SDNode *N); 286 SDValue PromoteIntOp_CONVERT_RNDSAT(SDNode *N); 287 SDValue PromoteIntOp_INSERT_VECTOR_ELT(SDNode *N, unsigned OpNo); 288 SDValue PromoteIntOp_MEMBARRIER(SDNode *N); 289 SDValue PromoteIntOp_SCALAR_TO_VECTOR(SDNode *N); 290 SDValue PromoteIntOp_SELECT(SDNode *N, unsigned OpNo); 291 SDValue PromoteIntOp_SELECT_CC(SDNode *N, unsigned OpNo); 292 SDValue PromoteIntOp_SETCC(SDNode *N, unsigned OpNo); 293 SDValue PromoteIntOp_Shift(SDNode *N); 294 SDValue PromoteIntOp_SIGN_EXTEND(SDNode *N); 295 SDValue PromoteIntOp_SINT_TO_FP(SDNode *N); 296 SDValue PromoteIntOp_STORE(StoreSDNode *N, unsigned OpNo); 297 SDValue PromoteIntOp_TRUNCATE(SDNode *N); 298 SDValue PromoteIntOp_UINT_TO_FP(SDNode *N); 299 SDValue PromoteIntOp_ZERO_EXTEND(SDNode *N); 300 301 void PromoteSetCCOperands(SDValue &LHS,SDValue &RHS, ISD::CondCode Code); 302 303 //===--------------------------------------------------------------------===// 304 // Integer Expansion Support: LegalizeIntegerTypes.cpp 305 //===--------------------------------------------------------------------===// 306 307 /// GetExpandedInteger - Given a processed operand Op which was expanded into 308 /// two integers of half the size, this returns the two halves. The low bits 309 /// of Op are exactly equal to the bits of Lo; the high bits exactly equal Hi. 310 /// For example, if Op is an i64 which was expanded into two i32's, then this 311 /// method returns the two i32's, with Lo being equal to the lower 32 bits of 312 /// Op, and Hi being equal to the upper 32 bits. 313 void GetExpandedInteger(SDValue Op, SDValue &Lo, SDValue &Hi); 314 void SetExpandedInteger(SDValue Op, SDValue Lo, SDValue Hi); 315 316 // Integer Result Expansion. 317 void ExpandIntegerResult(SDNode *N, unsigned ResNo); 318 void ExpandIntRes_ANY_EXTEND (SDNode *N, SDValue &Lo, SDValue &Hi); 319 void ExpandIntRes_AssertSext (SDNode *N, SDValue &Lo, SDValue &Hi); 320 void ExpandIntRes_AssertZext (SDNode *N, SDValue &Lo, SDValue &Hi); 321 void ExpandIntRes_Constant (SDNode *N, SDValue &Lo, SDValue &Hi); 322 void ExpandIntRes_CTLZ (SDNode *N, SDValue &Lo, SDValue &Hi); 323 void ExpandIntRes_CTPOP (SDNode *N, SDValue &Lo, SDValue &Hi); 324 void ExpandIntRes_CTTZ (SDNode *N, SDValue &Lo, SDValue &Hi); 325 void ExpandIntRes_LOAD (LoadSDNode *N, SDValue &Lo, SDValue &Hi); 326 void ExpandIntRes_SIGN_EXTEND (SDNode *N, SDValue &Lo, SDValue &Hi); 327 void ExpandIntRes_SIGN_EXTEND_INREG (SDNode *N, SDValue &Lo, SDValue &Hi); 328 void ExpandIntRes_TRUNCATE (SDNode *N, SDValue &Lo, SDValue &Hi); 329 void ExpandIntRes_ZERO_EXTEND (SDNode *N, SDValue &Lo, SDValue &Hi); 330 void ExpandIntRes_FP_TO_SINT (SDNode *N, SDValue &Lo, SDValue &Hi); 331 void ExpandIntRes_FP_TO_UINT (SDNode *N, SDValue &Lo, SDValue &Hi); 332 333 void ExpandIntRes_Logical (SDNode *N, SDValue &Lo, SDValue &Hi); 334 void ExpandIntRes_ADDSUB (SDNode *N, SDValue &Lo, SDValue &Hi); 335 void ExpandIntRes_ADDSUBC (SDNode *N, SDValue &Lo, SDValue &Hi); 336 void ExpandIntRes_ADDSUBE (SDNode *N, SDValue &Lo, SDValue &Hi); 337 void ExpandIntRes_BSWAP (SDNode *N, SDValue &Lo, SDValue &Hi); 338 void ExpandIntRes_MUL (SDNode *N, SDValue &Lo, SDValue &Hi); 339 void ExpandIntRes_SDIV (SDNode *N, SDValue &Lo, SDValue &Hi); 340 void ExpandIntRes_SREM (SDNode *N, SDValue &Lo, SDValue &Hi); 341 void ExpandIntRes_UDIV (SDNode *N, SDValue &Lo, SDValue &Hi); 342 void ExpandIntRes_UREM (SDNode *N, SDValue &Lo, SDValue &Hi); 343 void ExpandIntRes_Shift (SDNode *N, SDValue &Lo, SDValue &Hi); 344 345 void ExpandIntRes_SADDSUBO (SDNode *N, SDValue &Lo, SDValue &Hi); 346 void ExpandIntRes_UADDSUBO (SDNode *N, SDValue &Lo, SDValue &Hi); 347 348 void ExpandShiftByConstant(SDNode *N, unsigned Amt, 349 SDValue &Lo, SDValue &Hi); 350 bool ExpandShiftWithKnownAmountBit(SDNode *N, SDValue &Lo, SDValue &Hi); 351 bool ExpandShiftWithUnknownAmountBit(SDNode *N, SDValue &Lo, SDValue &Hi); 352 353 // Integer Operand Expansion. 354 bool ExpandIntegerOperand(SDNode *N, unsigned OperandNo); 355 SDValue ExpandIntOp_BITCAST(SDNode *N); 356 SDValue ExpandIntOp_BR_CC(SDNode *N); 357 SDValue ExpandIntOp_BUILD_VECTOR(SDNode *N); 358 SDValue ExpandIntOp_EXTRACT_ELEMENT(SDNode *N); 359 SDValue ExpandIntOp_SELECT_CC(SDNode *N); 360 SDValue ExpandIntOp_SETCC(SDNode *N); 361 SDValue ExpandIntOp_Shift(SDNode *N); 362 SDValue ExpandIntOp_SINT_TO_FP(SDNode *N); 363 SDValue ExpandIntOp_STORE(StoreSDNode *N, unsigned OpNo); 364 SDValue ExpandIntOp_TRUNCATE(SDNode *N); 365 SDValue ExpandIntOp_UINT_TO_FP(SDNode *N); 366 SDValue ExpandIntOp_RETURNADDR(SDNode *N); 367 368 void IntegerExpandSetCCOperands(SDValue &NewLHS, SDValue &NewRHS, 369 ISD::CondCode &CCCode, DebugLoc dl); 370 371 //===--------------------------------------------------------------------===// 372 // Float to Integer Conversion Support: LegalizeFloatTypes.cpp 373 //===--------------------------------------------------------------------===// 374 375 /// GetSoftenedFloat - Given a processed operand Op which was converted to an 376 /// integer of the same size, this returns the integer. The integer contains 377 /// exactly the same bits as Op - only the type changed. For example, if Op 378 /// is an f32 which was softened to an i32, then this method returns an i32, 379 /// the bits of which coincide with those of Op. 380 SDValue GetSoftenedFloat(SDValue Op) { 381 SDValue &SoftenedOp = SoftenedFloats[Op]; 382 RemapValue(SoftenedOp); 383 assert(SoftenedOp.getNode() && "Operand wasn't converted to integer?"); 384 return SoftenedOp; 385 } 386 void SetSoftenedFloat(SDValue Op, SDValue Result); 387 388 // Result Float to Integer Conversion. 389 void SoftenFloatResult(SDNode *N, unsigned OpNo); 390 SDValue SoftenFloatRes_BITCAST(SDNode *N); 391 SDValue SoftenFloatRes_BUILD_PAIR(SDNode *N); 392 SDValue SoftenFloatRes_ConstantFP(ConstantFPSDNode *N); 393 SDValue SoftenFloatRes_EXTRACT_VECTOR_ELT(SDNode *N); 394 SDValue SoftenFloatRes_FABS(SDNode *N); 395 SDValue SoftenFloatRes_FADD(SDNode *N); 396 SDValue SoftenFloatRes_FCEIL(SDNode *N); 397 SDValue SoftenFloatRes_FCOPYSIGN(SDNode *N); 398 SDValue SoftenFloatRes_FCOS(SDNode *N); 399 SDValue SoftenFloatRes_FDIV(SDNode *N); 400 SDValue SoftenFloatRes_FEXP(SDNode *N); 401 SDValue SoftenFloatRes_FEXP2(SDNode *N); 402 SDValue SoftenFloatRes_FFLOOR(SDNode *N); 403 SDValue SoftenFloatRes_FLOG(SDNode *N); 404 SDValue SoftenFloatRes_FLOG2(SDNode *N); 405 SDValue SoftenFloatRes_FLOG10(SDNode *N); 406 SDValue SoftenFloatRes_FMUL(SDNode *N); 407 SDValue SoftenFloatRes_FNEARBYINT(SDNode *N); 408 SDValue SoftenFloatRes_FNEG(SDNode *N); 409 SDValue SoftenFloatRes_FP_EXTEND(SDNode *N); 410 SDValue SoftenFloatRes_FP16_TO_FP32(SDNode *N); 411 SDValue SoftenFloatRes_FP_ROUND(SDNode *N); 412 SDValue SoftenFloatRes_FPOW(SDNode *N); 413 SDValue SoftenFloatRes_FPOWI(SDNode *N); 414 SDValue SoftenFloatRes_FREM(SDNode *N); 415 SDValue SoftenFloatRes_FRINT(SDNode *N); 416 SDValue SoftenFloatRes_FSIN(SDNode *N); 417 SDValue SoftenFloatRes_FSQRT(SDNode *N); 418 SDValue SoftenFloatRes_FSUB(SDNode *N); 419 SDValue SoftenFloatRes_FTRUNC(SDNode *N); 420 SDValue SoftenFloatRes_LOAD(SDNode *N); 421 SDValue SoftenFloatRes_SELECT(SDNode *N); 422 SDValue SoftenFloatRes_SELECT_CC(SDNode *N); 423 SDValue SoftenFloatRes_UNDEF(SDNode *N); 424 SDValue SoftenFloatRes_VAARG(SDNode *N); 425 SDValue SoftenFloatRes_XINT_TO_FP(SDNode *N); 426 427 // Operand Float to Integer Conversion. 428 bool SoftenFloatOperand(SDNode *N, unsigned OpNo); 429 SDValue SoftenFloatOp_BITCAST(SDNode *N); 430 SDValue SoftenFloatOp_BR_CC(SDNode *N); 431 SDValue SoftenFloatOp_FP_ROUND(SDNode *N); 432 SDValue SoftenFloatOp_FP_TO_SINT(SDNode *N); 433 SDValue SoftenFloatOp_FP_TO_UINT(SDNode *N); 434 SDValue SoftenFloatOp_FP32_TO_FP16(SDNode *N); 435 SDValue SoftenFloatOp_SELECT_CC(SDNode *N); 436 SDValue SoftenFloatOp_SETCC(SDNode *N); 437 SDValue SoftenFloatOp_STORE(SDNode *N, unsigned OpNo); 438 439 void SoftenSetCCOperands(SDValue &NewLHS, SDValue &NewRHS, 440 ISD::CondCode &CCCode, DebugLoc dl); 441 442 //===--------------------------------------------------------------------===// 443 // Float Expansion Support: LegalizeFloatTypes.cpp 444 //===--------------------------------------------------------------------===// 445 446 /// GetExpandedFloat - Given a processed operand Op which was expanded into 447 /// two floating point values of half the size, this returns the two halves. 448 /// The low bits of Op are exactly equal to the bits of Lo; the high bits 449 /// exactly equal Hi. For example, if Op is a ppcf128 which was expanded 450 /// into two f64's, then this method returns the two f64's, with Lo being 451 /// equal to the lower 64 bits of Op, and Hi to the upper 64 bits. 452 void GetExpandedFloat(SDValue Op, SDValue &Lo, SDValue &Hi); 453 void SetExpandedFloat(SDValue Op, SDValue Lo, SDValue Hi); 454 455 // Float Result Expansion. 456 void ExpandFloatResult(SDNode *N, unsigned ResNo); 457 void ExpandFloatRes_ConstantFP(SDNode *N, SDValue &Lo, SDValue &Hi); 458 void ExpandFloatRes_FABS (SDNode *N, SDValue &Lo, SDValue &Hi); 459 void ExpandFloatRes_FADD (SDNode *N, SDValue &Lo, SDValue &Hi); 460 void ExpandFloatRes_FCEIL (SDNode *N, SDValue &Lo, SDValue &Hi); 461 void ExpandFloatRes_FCOPYSIGN (SDNode *N, SDValue &Lo, SDValue &Hi); 462 void ExpandFloatRes_FCOS (SDNode *N, SDValue &Lo, SDValue &Hi); 463 void ExpandFloatRes_FDIV (SDNode *N, SDValue &Lo, SDValue &Hi); 464 void ExpandFloatRes_FEXP (SDNode *N, SDValue &Lo, SDValue &Hi); 465 void ExpandFloatRes_FEXP2 (SDNode *N, SDValue &Lo, SDValue &Hi); 466 void ExpandFloatRes_FFLOOR (SDNode *N, SDValue &Lo, SDValue &Hi); 467 void ExpandFloatRes_FLOG (SDNode *N, SDValue &Lo, SDValue &Hi); 468 void ExpandFloatRes_FLOG2 (SDNode *N, SDValue &Lo, SDValue &Hi); 469 void ExpandFloatRes_FLOG10 (SDNode *N, SDValue &Lo, SDValue &Hi); 470 void ExpandFloatRes_FMUL (SDNode *N, SDValue &Lo, SDValue &Hi); 471 void ExpandFloatRes_FNEARBYINT(SDNode *N, SDValue &Lo, SDValue &Hi); 472 void ExpandFloatRes_FNEG (SDNode *N, SDValue &Lo, SDValue &Hi); 473 void ExpandFloatRes_FP_EXTEND (SDNode *N, SDValue &Lo, SDValue &Hi); 474 void ExpandFloatRes_FPOW (SDNode *N, SDValue &Lo, SDValue &Hi); 475 void ExpandFloatRes_FPOWI (SDNode *N, SDValue &Lo, SDValue &Hi); 476 void ExpandFloatRes_FRINT (SDNode *N, SDValue &Lo, SDValue &Hi); 477 void ExpandFloatRes_FSIN (SDNode *N, SDValue &Lo, SDValue &Hi); 478 void ExpandFloatRes_FSQRT (SDNode *N, SDValue &Lo, SDValue &Hi); 479 void ExpandFloatRes_FSUB (SDNode *N, SDValue &Lo, SDValue &Hi); 480 void ExpandFloatRes_FTRUNC (SDNode *N, SDValue &Lo, SDValue &Hi); 481 void ExpandFloatRes_LOAD (SDNode *N, SDValue &Lo, SDValue &Hi); 482 void ExpandFloatRes_XINT_TO_FP(SDNode *N, SDValue &Lo, SDValue &Hi); 483 484 // Float Operand Expansion. 485 bool ExpandFloatOperand(SDNode *N, unsigned OperandNo); 486 SDValue ExpandFloatOp_BR_CC(SDNode *N); 487 SDValue ExpandFloatOp_FP_ROUND(SDNode *N); 488 SDValue ExpandFloatOp_FP_TO_SINT(SDNode *N); 489 SDValue ExpandFloatOp_FP_TO_UINT(SDNode *N); 490 SDValue ExpandFloatOp_SELECT_CC(SDNode *N); 491 SDValue ExpandFloatOp_SETCC(SDNode *N); 492 SDValue ExpandFloatOp_STORE(SDNode *N, unsigned OpNo); 493 494 void FloatExpandSetCCOperands(SDValue &NewLHS, SDValue &NewRHS, 495 ISD::CondCode &CCCode, DebugLoc dl); 496 497 //===--------------------------------------------------------------------===// 498 // Scalarization Support: LegalizeVectorTypes.cpp 499 //===--------------------------------------------------------------------===// 500 501 /// GetScalarizedVector - Given a processed one-element vector Op which was 502 /// scalarized to its element type, this returns the element. For example, 503 /// if Op is a v1i32, Op = < i32 val >, this method returns val, an i32. 504 SDValue GetScalarizedVector(SDValue Op) { 505 SDValue &ScalarizedOp = ScalarizedVectors[Op]; 506 RemapValue(ScalarizedOp); 507 assert(ScalarizedOp.getNode() && "Operand wasn't scalarized?"); 508 return ScalarizedOp; 509 } 510 void SetScalarizedVector(SDValue Op, SDValue Result); 511 512 // Vector Result Scalarization: <1 x ty> -> ty. 513 void ScalarizeVectorResult(SDNode *N, unsigned OpNo); 514 SDValue ScalarizeVecRes_BinOp(SDNode *N); 515 SDValue ScalarizeVecRes_UnaryOp(SDNode *N); 516 SDValue ScalarizeVecRes_InregOp(SDNode *N); 517 518 SDValue ScalarizeVecRes_BITCAST(SDNode *N); 519 SDValue ScalarizeVecRes_CONVERT_RNDSAT(SDNode *N); 520 SDValue ScalarizeVecRes_EXTRACT_SUBVECTOR(SDNode *N); 521 SDValue ScalarizeVecRes_FPOWI(SDNode *N); 522 SDValue ScalarizeVecRes_INSERT_VECTOR_ELT(SDNode *N); 523 SDValue ScalarizeVecRes_LOAD(LoadSDNode *N); 524 SDValue ScalarizeVecRes_SCALAR_TO_VECTOR(SDNode *N); 525 SDValue ScalarizeVecRes_SIGN_EXTEND_INREG(SDNode *N); 526 SDValue ScalarizeVecRes_SELECT(SDNode *N); 527 SDValue ScalarizeVecRes_SELECT_CC(SDNode *N); 528 SDValue ScalarizeVecRes_SETCC(SDNode *N); 529 SDValue ScalarizeVecRes_UNDEF(SDNode *N); 530 SDValue ScalarizeVecRes_VECTOR_SHUFFLE(SDNode *N); 531 SDValue ScalarizeVecRes_VSETCC(SDNode *N); 532 533 // Vector Operand Scalarization: <1 x ty> -> ty. 534 bool ScalarizeVectorOperand(SDNode *N, unsigned OpNo); 535 SDValue ScalarizeVecOp_BITCAST(SDNode *N); 536 SDValue ScalarizeVecOp_CONCAT_VECTORS(SDNode *N); 537 SDValue ScalarizeVecOp_EXTRACT_VECTOR_ELT(SDNode *N); 538 SDValue ScalarizeVecOp_STORE(StoreSDNode *N, unsigned OpNo); 539 540 //===--------------------------------------------------------------------===// 541 // Vector Splitting Support: LegalizeVectorTypes.cpp 542 //===--------------------------------------------------------------------===// 543 544 /// GetSplitVector - Given a processed vector Op which was split into vectors 545 /// of half the size, this method returns the halves. The first elements of 546 /// Op coincide with the elements of Lo; the remaining elements of Op coincide 547 /// with the elements of Hi: Op is what you would get by concatenating Lo and 548 /// Hi. For example, if Op is a v8i32 that was split into two v4i32's, then 549 /// this method returns the two v4i32's, with Lo corresponding to the first 4 550 /// elements of Op, and Hi to the last 4 elements. 551 void GetSplitVector(SDValue Op, SDValue &Lo, SDValue &Hi); 552 void SetSplitVector(SDValue Op, SDValue Lo, SDValue Hi); 553 554 // Vector Result Splitting: <128 x ty> -> 2 x <64 x ty>. 555 void SplitVectorResult(SDNode *N, unsigned OpNo); 556 void SplitVecRes_BinOp(SDNode *N, SDValue &Lo, SDValue &Hi); 557 void SplitVecRes_UnaryOp(SDNode *N, SDValue &Lo, SDValue &Hi); 558 void SplitVecRes_InregOp(SDNode *N, SDValue &Lo, SDValue &Hi); 559 560 void SplitVecRes_BITCAST(SDNode *N, SDValue &Lo, SDValue &Hi); 561 void SplitVecRes_BUILD_PAIR(SDNode *N, SDValue &Lo, SDValue &Hi); 562 void SplitVecRes_BUILD_VECTOR(SDNode *N, SDValue &Lo, SDValue &Hi); 563 void SplitVecRes_CONCAT_VECTORS(SDNode *N, SDValue &Lo, SDValue &Hi); 564 void SplitVecRes_CONVERT_RNDSAT(SDNode *N, SDValue &Lo, SDValue &Hi); 565 void SplitVecRes_EXTRACT_SUBVECTOR(SDNode *N, SDValue &Lo, SDValue &Hi); 566 void SplitVecRes_FPOWI(SDNode *N, SDValue &Lo, SDValue &Hi); 567 void SplitVecRes_INSERT_VECTOR_ELT(SDNode *N, SDValue &Lo, SDValue &Hi); 568 void SplitVecRes_LOAD(LoadSDNode *N, SDValue &Lo, SDValue &Hi); 569 void SplitVecRes_SCALAR_TO_VECTOR(SDNode *N, SDValue &Lo, SDValue &Hi); 570 void SplitVecRes_SIGN_EXTEND_INREG(SDNode *N, SDValue &Lo, SDValue &Hi); 571 void SplitVecRes_SETCC(SDNode *N, SDValue &Lo, SDValue &Hi); 572 void SplitVecRes_UNDEF(SDNode *N, SDValue &Lo, SDValue &Hi); 573 void SplitVecRes_VECTOR_SHUFFLE(ShuffleVectorSDNode *N, SDValue &Lo, 574 SDValue &Hi); 575 576 // Vector Operand Splitting: <128 x ty> -> 2 x <64 x ty>. 577 bool SplitVectorOperand(SDNode *N, unsigned OpNo); 578 SDValue SplitVecOp_UnaryOp(SDNode *N); 579 580 SDValue SplitVecOp_BITCAST(SDNode *N); 581 SDValue SplitVecOp_EXTRACT_SUBVECTOR(SDNode *N); 582 SDValue SplitVecOp_EXTRACT_VECTOR_ELT(SDNode *N); 583 SDValue SplitVecOp_STORE(StoreSDNode *N, unsigned OpNo); 584 SDValue SplitVecOp_CONCAT_VECTORS(SDNode *N); 585 586 //===--------------------------------------------------------------------===// 587 // Vector Widening Support: LegalizeVectorTypes.cpp 588 //===--------------------------------------------------------------------===// 589 590 /// GetWidenedVector - Given a processed vector Op which was widened into a 591 /// larger vector, this method returns the larger vector. The elements of 592 /// the returned vector consist of the elements of Op followed by elements 593 /// containing rubbish. For example, if Op is a v2i32 that was widened to a 594 /// v4i32, then this method returns a v4i32 for which the first two elements 595 /// are the same as those of Op, while the last two elements contain rubbish. 596 SDValue GetWidenedVector(SDValue Op) { 597 SDValue &WidenedOp = WidenedVectors[Op]; 598 RemapValue(WidenedOp); 599 assert(WidenedOp.getNode() && "Operand wasn't widened?"); 600 return WidenedOp; 601 } 602 void SetWidenedVector(SDValue Op, SDValue Result); 603 604 // Widen Vector Result Promotion. 605 void WidenVectorResult(SDNode *N, unsigned ResNo); 606 SDValue WidenVecRes_BITCAST(SDNode* N); 607 SDValue WidenVecRes_BUILD_VECTOR(SDNode* N); 608 SDValue WidenVecRes_CONCAT_VECTORS(SDNode* N); 609 SDValue WidenVecRes_CONVERT_RNDSAT(SDNode* N); 610 SDValue WidenVecRes_EXTRACT_SUBVECTOR(SDNode* N); 611 SDValue WidenVecRes_INSERT_VECTOR_ELT(SDNode* N); 612 SDValue WidenVecRes_LOAD(SDNode* N); 613 SDValue WidenVecRes_SCALAR_TO_VECTOR(SDNode* N); 614 SDValue WidenVecRes_SIGN_EXTEND_INREG(SDNode* N); 615 SDValue WidenVecRes_SELECT(SDNode* N); 616 SDValue WidenVecRes_SELECT_CC(SDNode* N); 617 SDValue WidenVecRes_SETCC(SDNode* N); 618 SDValue WidenVecRes_UNDEF(SDNode *N); 619 SDValue WidenVecRes_VECTOR_SHUFFLE(ShuffleVectorSDNode *N); 620 SDValue WidenVecRes_VSETCC(SDNode* N); 621 622 SDValue WidenVecRes_Binary(SDNode *N); 623 SDValue WidenVecRes_Convert(SDNode *N); 624 SDValue WidenVecRes_POWI(SDNode *N); 625 SDValue WidenVecRes_Shift(SDNode *N); 626 SDValue WidenVecRes_Unary(SDNode *N); 627 SDValue WidenVecRes_InregOp(SDNode *N); 628 629 // Widen Vector Operand. 630 bool WidenVectorOperand(SDNode *N, unsigned ResNo); 631 SDValue WidenVecOp_BITCAST(SDNode *N); 632 SDValue WidenVecOp_CONCAT_VECTORS(SDNode *N); 633 SDValue WidenVecOp_EXTRACT_VECTOR_ELT(SDNode *N); 634 SDValue WidenVecOp_EXTRACT_SUBVECTOR(SDNode *N); 635 SDValue WidenVecOp_STORE(SDNode* N); 636 637 SDValue WidenVecOp_Convert(SDNode *N); 638 639 //===--------------------------------------------------------------------===// 640 // Vector Widening Utilities Support: LegalizeVectorTypes.cpp 641 //===--------------------------------------------------------------------===// 642 643 /// Helper GenWidenVectorLoads - Helper function to generate a set of 644 /// loads to load a vector with a resulting wider type. It takes 645 /// LdChain: list of chains for the load to be generated. 646 /// Ld: load to widen 647 SDValue GenWidenVectorLoads(SmallVector<SDValue, 16>& LdChain, 648 LoadSDNode *LD); 649 650 /// GenWidenVectorExtLoads - Helper function to generate a set of extension 651 /// loads to load a ector with a resulting wider type. It takes 652 /// LdChain: list of chains for the load to be generated. 653 /// Ld: load to widen 654 /// ExtType: extension element type 655 SDValue GenWidenVectorExtLoads(SmallVector<SDValue, 16>& LdChain, 656 LoadSDNode *LD, ISD::LoadExtType ExtType); 657 658 /// Helper genWidenVectorStores - Helper function to generate a set of 659 /// stores to store a widen vector into non widen memory 660 /// StChain: list of chains for the stores we have generated 661 /// ST: store of a widen value 662 void GenWidenVectorStores(SmallVector<SDValue, 16>& StChain, StoreSDNode *ST); 663 664 /// Helper genWidenVectorTruncStores - Helper function to generate a set of 665 /// stores to store a truncate widen vector into non widen memory 666 /// StChain: list of chains for the stores we have generated 667 /// ST: store of a widen value 668 void GenWidenVectorTruncStores(SmallVector<SDValue, 16>& StChain, 669 StoreSDNode *ST); 670 671 /// Modifies a vector input (widen or narrows) to a vector of NVT. The 672 /// input vector must have the same element type as NVT. 673 SDValue ModifyToType(SDValue InOp, EVT WidenVT); 674 675 676 //===--------------------------------------------------------------------===// 677 // Generic Splitting: LegalizeTypesGeneric.cpp 678 //===--------------------------------------------------------------------===// 679 680 // Legalization methods which only use that the illegal type is split into two 681 // not necessarily identical types. As such they can be used for splitting 682 // vectors and expanding integers and floats. 683 684 void GetSplitOp(SDValue Op, SDValue &Lo, SDValue &Hi) { 685 if (Op.getValueType().isVector()) 686 GetSplitVector(Op, Lo, Hi); 687 else if (Op.getValueType().isInteger()) 688 GetExpandedInteger(Op, Lo, Hi); 689 else 690 GetExpandedFloat(Op, Lo, Hi); 691 } 692 693 /// GetSplitDestVTs - Compute the VTs needed for the low/hi parts of a type 694 /// which is split (or expanded) into two not necessarily identical pieces. 695 void GetSplitDestVTs(EVT InVT, EVT &LoVT, EVT &HiVT); 696 697 /// GetPairElements - Use ISD::EXTRACT_ELEMENT nodes to extract the low and 698 /// high parts of the given value. 699 void GetPairElements(SDValue Pair, SDValue &Lo, SDValue &Hi); 700 701 // Generic Result Splitting. 702 void SplitRes_MERGE_VALUES(SDNode *N, SDValue &Lo, SDValue &Hi); 703 void SplitRes_SELECT (SDNode *N, SDValue &Lo, SDValue &Hi); 704 void SplitRes_SELECT_CC (SDNode *N, SDValue &Lo, SDValue &Hi); 705 void SplitRes_UNDEF (SDNode *N, SDValue &Lo, SDValue &Hi); 706 707 //===--------------------------------------------------------------------===// 708 // Generic Expansion: LegalizeTypesGeneric.cpp 709 //===--------------------------------------------------------------------===// 710 711 // Legalization methods which only use that the illegal type is split into two 712 // identical types of half the size, and that the Lo/Hi part is stored first 713 // in memory on little/big-endian machines, followed by the Hi/Lo part. As 714 // such they can be used for expanding integers and floats. 715 716 void GetExpandedOp(SDValue Op, SDValue &Lo, SDValue &Hi) { 717 if (Op.getValueType().isInteger()) 718 GetExpandedInteger(Op, Lo, Hi); 719 else 720 GetExpandedFloat(Op, Lo, Hi); 721 } 722 723 // Generic Result Expansion. 724 void ExpandRes_BITCAST (SDNode *N, SDValue &Lo, SDValue &Hi); 725 void ExpandRes_BUILD_PAIR (SDNode *N, SDValue &Lo, SDValue &Hi); 726 void ExpandRes_EXTRACT_ELEMENT (SDNode *N, SDValue &Lo, SDValue &Hi); 727 void ExpandRes_EXTRACT_VECTOR_ELT(SDNode *N, SDValue &Lo, SDValue &Hi); 728 void ExpandRes_NormalLoad (SDNode *N, SDValue &Lo, SDValue &Hi); 729 void ExpandRes_VAARG (SDNode *N, SDValue &Lo, SDValue &Hi); 730 731 // Generic Operand Expansion. 732 SDValue ExpandOp_BITCAST (SDNode *N); 733 SDValue ExpandOp_BUILD_VECTOR (SDNode *N); 734 SDValue ExpandOp_EXTRACT_ELEMENT (SDNode *N); 735 SDValue ExpandOp_INSERT_VECTOR_ELT(SDNode *N); 736 SDValue ExpandOp_SCALAR_TO_VECTOR (SDNode *N); 737 SDValue ExpandOp_NormalStore (SDNode *N, unsigned OpNo); 738}; 739 740} // end namespace llvm. 741 742#endif 743