LegalizeTypes.h revision 33390848a7eca75301d04a59b89b516d83e19ee0
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 61 /// ValueTypeActions - This is a bitvector that contains two bits for each 62 /// simple value type, where the two bits correspond to the LegalizeAction 63 /// enum from TargetLowering. This can be queried with "getTypeAction(VT)". 64 TargetLowering::ValueTypeActionImpl ValueTypeActions; 65 66 /// getTypeAction - Return how we should legalize values of this type. 67 TargetLowering::LegalizeTypeAction getTypeAction(EVT VT) const { 68 return TLI.getTypeAction(*DAG.getContext(), VT); 69 } 70 71 /// isTypeLegal - Return true if this type is legal on this target. 72 bool isTypeLegal(EVT VT) const { 73 return TLI.getTypeAction(*DAG.getContext(), VT) == TargetLowering::TypeLegal; 74 } 75 76 /// IgnoreNodeResults - Pretend all of this node's results are legal. 77 bool IgnoreNodeResults(SDNode *N) const { 78 return N->getOpcode() == ISD::TargetConstant; 79 } 80 81 /// PromotedIntegers - For integer nodes that are below legal width, this map 82 /// indicates what promoted value to use. 83 DenseMap<SDValue, SDValue> PromotedIntegers; 84 85 /// ExpandedIntegers - For integer nodes that need to be expanded this map 86 /// indicates which operands are the expanded version of the input. 87 DenseMap<SDValue, std::pair<SDValue, SDValue> > ExpandedIntegers; 88 89 /// SoftenedFloats - For floating point nodes converted to integers of 90 /// the same size, this map indicates the converted value to use. 91 DenseMap<SDValue, SDValue> SoftenedFloats; 92 93 /// ExpandedFloats - For float nodes that need to be expanded this map 94 /// indicates which operands are the expanded version of the input. 95 DenseMap<SDValue, std::pair<SDValue, SDValue> > ExpandedFloats; 96 97 /// ScalarizedVectors - For nodes that are <1 x ty>, this map indicates the 98 /// scalar value of type 'ty' to use. 99 DenseMap<SDValue, SDValue> ScalarizedVectors; 100 101 /// SplitVectors - For nodes that need to be split this map indicates 102 /// which operands are the expanded version of the input. 103 DenseMap<SDValue, std::pair<SDValue, SDValue> > SplitVectors; 104 105 /// WidenedVectors - For vector nodes that need to be widened, indicates 106 /// the widened value to use. 107 DenseMap<SDValue, SDValue> WidenedVectors; 108 109 /// ReplacedValues - For values that have been replaced with another, 110 /// indicates the replacement value to use. 111 DenseMap<SDValue, SDValue> ReplacedValues; 112 113 /// Worklist - This defines a worklist of nodes to process. In order to be 114 /// pushed onto this worklist, all operands of a node must have already been 115 /// processed. 116 SmallVector<SDNode*, 128> Worklist; 117 118public: 119 explicit DAGTypeLegalizer(SelectionDAG &dag) 120 : TLI(dag.getTargetLoweringInfo()), DAG(dag), 121 ValueTypeActions(TLI.getValueTypeActions()) { 122 assert(MVT::LAST_VALUETYPE <= MVT::MAX_ALLOWED_VALUETYPE && 123 "Too many value types for ValueTypeActions to hold!"); 124 } 125 126 /// run - This is the main entry point for the type legalizer. This does a 127 /// top-down traversal of the dag, legalizing types as it goes. Returns 128 /// "true" if it made any changes. 129 bool run(); 130 131 void NoteDeletion(SDNode *Old, SDNode *New) { 132 ExpungeNode(Old); 133 ExpungeNode(New); 134 for (unsigned i = 0, e = Old->getNumValues(); i != e; ++i) 135 ReplacedValues[SDValue(Old, i)] = SDValue(New, i); 136 } 137 138private: 139 SDNode *AnalyzeNewNode(SDNode *N); 140 void AnalyzeNewValue(SDValue &Val); 141 void ExpungeNode(SDNode *N); 142 void PerformExpensiveChecks(); 143 void RemapValue(SDValue &N); 144 145 // Common routines. 146 SDValue BitConvertToInteger(SDValue Op); 147 SDValue BitConvertVectorToIntegerVector(SDValue Op); 148 SDValue CreateStackStoreLoad(SDValue Op, EVT DestVT); 149 bool CustomLowerNode(SDNode *N, EVT VT, bool LegalizeResult); 150 bool CustomWidenLowerNode(SDNode *N, EVT VT); 151 SDValue GetVectorElementPointer(SDValue VecPtr, EVT EltVT, SDValue Index); 152 SDValue JoinIntegers(SDValue Lo, SDValue Hi); 153 SDValue LibCallify(RTLIB::Libcall LC, SDNode *N, bool isSigned); 154 SDValue MakeLibCall(RTLIB::Libcall LC, EVT RetVT, 155 const SDValue *Ops, unsigned NumOps, bool isSigned, 156 DebugLoc dl); 157 std::pair<SDValue, SDValue> ExpandChainLibCall(RTLIB::Libcall LC, 158 SDNode *Node, bool isSigned); 159 std::pair<SDValue, SDValue> ExpandAtomic(SDNode *Node); 160 161 SDValue PromoteTargetBoolean(SDValue Bool, EVT VT); 162 void ReplaceValueWith(SDValue From, SDValue To); 163 void SplitInteger(SDValue Op, SDValue &Lo, SDValue &Hi); 164 void SplitInteger(SDValue Op, EVT LoVT, EVT HiVT, 165 SDValue &Lo, SDValue &Hi); 166 167 //===--------------------------------------------------------------------===// 168 // Integer Promotion Support: LegalizeIntegerTypes.cpp 169 //===--------------------------------------------------------------------===// 170 171 /// GetPromotedInteger - Given a processed operand Op which was promoted to a 172 /// larger integer type, this returns the promoted value. The low bits of the 173 /// promoted value corresponding to the original type are exactly equal to Op. 174 /// The extra bits contain rubbish, so the promoted value may need to be zero- 175 /// or sign-extended from the original type before it is usable (the helpers 176 /// SExtPromotedInteger and ZExtPromotedInteger can do this for you). 177 /// For example, if Op is an i16 and was promoted to an i32, then this method 178 /// returns an i32, the lower 16 bits of which coincide with Op, and the upper 179 /// 16 bits of which contain rubbish. 180 SDValue GetPromotedInteger(SDValue Op) { 181 SDValue &PromotedOp = PromotedIntegers[Op]; 182 RemapValue(PromotedOp); 183 assert(PromotedOp.getNode() && "Operand wasn't promoted?"); 184 return PromotedOp; 185 } 186 void SetPromotedInteger(SDValue Op, SDValue Result); 187 188 /// SExtPromotedInteger - Get a promoted operand and sign extend it to the 189 /// final size. 190 SDValue SExtPromotedInteger(SDValue Op) { 191 EVT OldVT = Op.getValueType(); 192 DebugLoc dl = Op.getDebugLoc(); 193 Op = GetPromotedInteger(Op); 194 return DAG.getNode(ISD::SIGN_EXTEND_INREG, dl, Op.getValueType(), Op, 195 DAG.getValueType(OldVT)); 196 } 197 198 /// ZExtPromotedInteger - Get a promoted operand and zero extend it to the 199 /// final size. 200 SDValue ZExtPromotedInteger(SDValue Op) { 201 EVT OldVT = Op.getValueType(); 202 DebugLoc dl = Op.getDebugLoc(); 203 Op = GetPromotedInteger(Op); 204 return DAG.getZeroExtendInReg(Op, dl, OldVT.getScalarType()); 205 } 206 207 // Integer Result Promotion. 208 void PromoteIntegerResult(SDNode *N, unsigned ResNo); 209 SDValue PromoteIntRes_AssertSext(SDNode *N); 210 SDValue PromoteIntRes_AssertZext(SDNode *N); 211 SDValue PromoteIntRes_Atomic1(AtomicSDNode *N); 212 SDValue PromoteIntRes_Atomic2(AtomicSDNode *N); 213 SDValue PromoteIntRes_EXTRACT_SUBVECTOR(SDNode *N); 214 SDValue PromoteIntRes_VECTOR_SHUFFLE(SDNode *N); 215 SDValue PromoteIntRes_BUILD_VECTOR(SDNode *N); 216 SDValue PromoteIntRes_SCALAR_TO_VECTOR(SDNode *N); 217 SDValue PromoteIntRes_INSERT_VECTOR_ELT(SDNode *N); 218 SDValue PromoteIntRes_BITCAST(SDNode *N); 219 SDValue PromoteIntRes_BSWAP(SDNode *N); 220 SDValue PromoteIntRes_BUILD_PAIR(SDNode *N); 221 SDValue PromoteIntRes_Constant(SDNode *N); 222 SDValue PromoteIntRes_CONVERT_RNDSAT(SDNode *N); 223 SDValue PromoteIntRes_CTLZ(SDNode *N); 224 SDValue PromoteIntRes_CTPOP(SDNode *N); 225 SDValue PromoteIntRes_CTTZ(SDNode *N); 226 SDValue PromoteIntRes_EXTRACT_VECTOR_ELT(SDNode *N); 227 SDValue PromoteIntRes_FP_TO_XINT(SDNode *N); 228 SDValue PromoteIntRes_FP32_TO_FP16(SDNode *N); 229 SDValue PromoteIntRes_INT_EXTEND(SDNode *N); 230 SDValue PromoteIntRes_LOAD(LoadSDNode *N); 231 SDValue PromoteIntRes_Overflow(SDNode *N); 232 SDValue PromoteIntRes_SADDSUBO(SDNode *N, unsigned ResNo); 233 SDValue PromoteIntRes_SDIV(SDNode *N); 234 SDValue PromoteIntRes_SELECT(SDNode *N); 235 SDValue PromoteIntRes_SELECT_CC(SDNode *N); 236 SDValue PromoteIntRes_SETCC(SDNode *N); 237 SDValue PromoteIntRes_SHL(SDNode *N); 238 SDValue PromoteIntRes_SimpleIntBinOp(SDNode *N); 239 SDValue PromoteIntRes_SIGN_EXTEND_INREG(SDNode *N); 240 SDValue PromoteIntRes_SRA(SDNode *N); 241 SDValue PromoteIntRes_SRL(SDNode *N); 242 SDValue PromoteIntRes_TRUNCATE(SDNode *N); 243 SDValue PromoteIntRes_UADDSUBO(SDNode *N, unsigned ResNo); 244 SDValue PromoteIntRes_UDIV(SDNode *N); 245 SDValue PromoteIntRes_UNDEF(SDNode *N); 246 SDValue PromoteIntRes_VAARG(SDNode *N); 247 SDValue PromoteIntRes_XMULO(SDNode *N, unsigned ResNo); 248 249 // Integer Operand Promotion. 250 bool PromoteIntegerOperand(SDNode *N, unsigned OperandNo); 251 SDValue PromoteIntOp_ANY_EXTEND(SDNode *N); 252 SDValue PromoteIntOp_BITCAST(SDNode *N); 253 SDValue PromoteIntOp_BUILD_PAIR(SDNode *N); 254 SDValue PromoteIntOp_BR_CC(SDNode *N, unsigned OpNo); 255 SDValue PromoteIntOp_BRCOND(SDNode *N, unsigned OpNo); 256 SDValue PromoteIntOp_BUILD_VECTOR(SDNode *N); 257 SDValue PromoteIntOp_CONVERT_RNDSAT(SDNode *N); 258 SDValue PromoteIntOp_INSERT_VECTOR_ELT(SDNode *N, unsigned OpNo); 259 SDValue PromoteIntOp_EXTRACT_ELEMENT(SDNode *N); 260 SDValue PromoteIntOp_EXTRACT_VECTOR_ELT(SDNode *N); 261 SDValue PromoteIntOp_CONCAT_VECTORS(SDNode *N); 262 SDValue PromoteIntOp_MEMBARRIER(SDNode *N); 263 SDValue PromoteIntOp_SCALAR_TO_VECTOR(SDNode *N); 264 SDValue PromoteIntOp_SELECT(SDNode *N, unsigned OpNo); 265 SDValue PromoteIntOp_SELECT_CC(SDNode *N, unsigned OpNo); 266 SDValue PromoteIntOp_SETCC(SDNode *N, unsigned OpNo); 267 SDValue PromoteIntOp_Shift(SDNode *N); 268 SDValue PromoteIntOp_SIGN_EXTEND(SDNode *N); 269 SDValue PromoteIntOp_SINT_TO_FP(SDNode *N); 270 SDValue PromoteIntOp_STORE(StoreSDNode *N, unsigned OpNo); 271 SDValue PromoteIntOp_TRUNCATE(SDNode *N); 272 SDValue PromoteIntOp_UINT_TO_FP(SDNode *N); 273 SDValue PromoteIntOp_ZERO_EXTEND(SDNode *N); 274 275 void PromoteSetCCOperands(SDValue &LHS,SDValue &RHS, ISD::CondCode Code); 276 277 //===--------------------------------------------------------------------===// 278 // Integer Expansion Support: LegalizeIntegerTypes.cpp 279 //===--------------------------------------------------------------------===// 280 281 /// GetExpandedInteger - Given a processed operand Op which was expanded into 282 /// two integers of half the size, this returns the two halves. The low bits 283 /// of Op are exactly equal to the bits of Lo; the high bits exactly equal Hi. 284 /// For example, if Op is an i64 which was expanded into two i32's, then this 285 /// method returns the two i32's, with Lo being equal to the lower 32 bits of 286 /// Op, and Hi being equal to the upper 32 bits. 287 void GetExpandedInteger(SDValue Op, SDValue &Lo, SDValue &Hi); 288 void SetExpandedInteger(SDValue Op, SDValue Lo, SDValue Hi); 289 290 // Integer Result Expansion. 291 void ExpandIntegerResult(SDNode *N, unsigned ResNo); 292 void ExpandIntRes_ANY_EXTEND (SDNode *N, SDValue &Lo, SDValue &Hi); 293 void ExpandIntRes_AssertSext (SDNode *N, SDValue &Lo, SDValue &Hi); 294 void ExpandIntRes_AssertZext (SDNode *N, SDValue &Lo, SDValue &Hi); 295 void ExpandIntRes_Constant (SDNode *N, SDValue &Lo, SDValue &Hi); 296 void ExpandIntRes_CTLZ (SDNode *N, SDValue &Lo, SDValue &Hi); 297 void ExpandIntRes_CTPOP (SDNode *N, SDValue &Lo, SDValue &Hi); 298 void ExpandIntRes_CTTZ (SDNode *N, SDValue &Lo, SDValue &Hi); 299 void ExpandIntRes_LOAD (LoadSDNode *N, SDValue &Lo, SDValue &Hi); 300 void ExpandIntRes_SIGN_EXTEND (SDNode *N, SDValue &Lo, SDValue &Hi); 301 void ExpandIntRes_SIGN_EXTEND_INREG (SDNode *N, SDValue &Lo, SDValue &Hi); 302 void ExpandIntRes_TRUNCATE (SDNode *N, SDValue &Lo, SDValue &Hi); 303 void ExpandIntRes_ZERO_EXTEND (SDNode *N, SDValue &Lo, SDValue &Hi); 304 void ExpandIntRes_FP_TO_SINT (SDNode *N, SDValue &Lo, SDValue &Hi); 305 void ExpandIntRes_FP_TO_UINT (SDNode *N, SDValue &Lo, SDValue &Hi); 306 307 void ExpandIntRes_Logical (SDNode *N, SDValue &Lo, SDValue &Hi); 308 void ExpandIntRes_ADDSUB (SDNode *N, SDValue &Lo, SDValue &Hi); 309 void ExpandIntRes_ADDSUBC (SDNode *N, SDValue &Lo, SDValue &Hi); 310 void ExpandIntRes_ADDSUBE (SDNode *N, SDValue &Lo, SDValue &Hi); 311 void ExpandIntRes_BSWAP (SDNode *N, SDValue &Lo, SDValue &Hi); 312 void ExpandIntRes_MUL (SDNode *N, SDValue &Lo, SDValue &Hi); 313 void ExpandIntRes_SDIV (SDNode *N, SDValue &Lo, SDValue &Hi); 314 void ExpandIntRes_SREM (SDNode *N, SDValue &Lo, SDValue &Hi); 315 void ExpandIntRes_UDIV (SDNode *N, SDValue &Lo, SDValue &Hi); 316 void ExpandIntRes_UREM (SDNode *N, SDValue &Lo, SDValue &Hi); 317 void ExpandIntRes_Shift (SDNode *N, SDValue &Lo, SDValue &Hi); 318 319 void ExpandIntRes_SADDSUBO (SDNode *N, SDValue &Lo, SDValue &Hi); 320 void ExpandIntRes_UADDSUBO (SDNode *N, SDValue &Lo, SDValue &Hi); 321 void ExpandIntRes_XMULO (SDNode *N, SDValue &Lo, SDValue &Hi); 322 323 void ExpandShiftByConstant(SDNode *N, unsigned Amt, 324 SDValue &Lo, SDValue &Hi); 325 bool ExpandShiftWithKnownAmountBit(SDNode *N, SDValue &Lo, SDValue &Hi); 326 bool ExpandShiftWithUnknownAmountBit(SDNode *N, SDValue &Lo, SDValue &Hi); 327 328 // Integer Operand Expansion. 329 bool ExpandIntegerOperand(SDNode *N, unsigned OperandNo); 330 SDValue ExpandIntOp_BITCAST(SDNode *N); 331 SDValue ExpandIntOp_BR_CC(SDNode *N); 332 SDValue ExpandIntOp_BUILD_VECTOR(SDNode *N); 333 SDValue ExpandIntOp_EXTRACT_ELEMENT(SDNode *N); 334 SDValue ExpandIntOp_SELECT_CC(SDNode *N); 335 SDValue ExpandIntOp_SETCC(SDNode *N); 336 SDValue ExpandIntOp_Shift(SDNode *N); 337 SDValue ExpandIntOp_SINT_TO_FP(SDNode *N); 338 SDValue ExpandIntOp_STORE(StoreSDNode *N, unsigned OpNo); 339 SDValue ExpandIntOp_TRUNCATE(SDNode *N); 340 SDValue ExpandIntOp_UINT_TO_FP(SDNode *N); 341 SDValue ExpandIntOp_RETURNADDR(SDNode *N); 342 343 void IntegerExpandSetCCOperands(SDValue &NewLHS, SDValue &NewRHS, 344 ISD::CondCode &CCCode, DebugLoc dl); 345 346 //===--------------------------------------------------------------------===// 347 // Float to Integer Conversion Support: LegalizeFloatTypes.cpp 348 //===--------------------------------------------------------------------===// 349 350 /// GetSoftenedFloat - Given a processed operand Op which was converted to an 351 /// integer of the same size, this returns the integer. The integer contains 352 /// exactly the same bits as Op - only the type changed. For example, if Op 353 /// is an f32 which was softened to an i32, then this method returns an i32, 354 /// the bits of which coincide with those of Op. 355 SDValue GetSoftenedFloat(SDValue Op) { 356 SDValue &SoftenedOp = SoftenedFloats[Op]; 357 RemapValue(SoftenedOp); 358 assert(SoftenedOp.getNode() && "Operand wasn't converted to integer?"); 359 return SoftenedOp; 360 } 361 void SetSoftenedFloat(SDValue Op, SDValue Result); 362 363 // Result Float to Integer Conversion. 364 void SoftenFloatResult(SDNode *N, unsigned OpNo); 365 SDValue SoftenFloatRes_BITCAST(SDNode *N); 366 SDValue SoftenFloatRes_BUILD_PAIR(SDNode *N); 367 SDValue SoftenFloatRes_ConstantFP(ConstantFPSDNode *N); 368 SDValue SoftenFloatRes_EXTRACT_VECTOR_ELT(SDNode *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_FMA(SDNode *N); 382 SDValue SoftenFloatRes_FMUL(SDNode *N); 383 SDValue SoftenFloatRes_FNEARBYINT(SDNode *N); 384 SDValue SoftenFloatRes_FNEG(SDNode *N); 385 SDValue SoftenFloatRes_FP_EXTEND(SDNode *N); 386 SDValue SoftenFloatRes_FP16_TO_FP32(SDNode *N); 387 SDValue SoftenFloatRes_FP_ROUND(SDNode *N); 388 SDValue SoftenFloatRes_FPOW(SDNode *N); 389 SDValue SoftenFloatRes_FPOWI(SDNode *N); 390 SDValue SoftenFloatRes_FREM(SDNode *N); 391 SDValue SoftenFloatRes_FRINT(SDNode *N); 392 SDValue SoftenFloatRes_FSIN(SDNode *N); 393 SDValue SoftenFloatRes_FSQRT(SDNode *N); 394 SDValue SoftenFloatRes_FSUB(SDNode *N); 395 SDValue SoftenFloatRes_FTRUNC(SDNode *N); 396 SDValue SoftenFloatRes_LOAD(SDNode *N); 397 SDValue SoftenFloatRes_SELECT(SDNode *N); 398 SDValue SoftenFloatRes_SELECT_CC(SDNode *N); 399 SDValue SoftenFloatRes_UNDEF(SDNode *N); 400 SDValue SoftenFloatRes_VAARG(SDNode *N); 401 SDValue SoftenFloatRes_XINT_TO_FP(SDNode *N); 402 403 // Operand Float to Integer Conversion. 404 bool SoftenFloatOperand(SDNode *N, unsigned OpNo); 405 SDValue SoftenFloatOp_BITCAST(SDNode *N); 406 SDValue SoftenFloatOp_BR_CC(SDNode *N); 407 SDValue SoftenFloatOp_FP_ROUND(SDNode *N); 408 SDValue SoftenFloatOp_FP_TO_SINT(SDNode *N); 409 SDValue SoftenFloatOp_FP_TO_UINT(SDNode *N); 410 SDValue SoftenFloatOp_FP32_TO_FP16(SDNode *N); 411 SDValue SoftenFloatOp_SELECT_CC(SDNode *N); 412 SDValue SoftenFloatOp_SETCC(SDNode *N); 413 SDValue SoftenFloatOp_STORE(SDNode *N, unsigned OpNo); 414 415 void SoftenSetCCOperands(SDValue &NewLHS, SDValue &NewRHS, 416 ISD::CondCode &CCCode, DebugLoc dl); 417 418 //===--------------------------------------------------------------------===// 419 // Float Expansion Support: LegalizeFloatTypes.cpp 420 //===--------------------------------------------------------------------===// 421 422 /// GetExpandedFloat - Given a processed operand Op which was expanded into 423 /// two floating point values of half the size, this returns the two halves. 424 /// The low bits of Op are exactly equal to the bits of Lo; the high bits 425 /// exactly equal Hi. For example, if Op is a ppcf128 which was expanded 426 /// into two f64's, then this method returns the two f64's, with Lo being 427 /// equal to the lower 64 bits of Op, and Hi to the upper 64 bits. 428 void GetExpandedFloat(SDValue Op, SDValue &Lo, SDValue &Hi); 429 void SetExpandedFloat(SDValue Op, SDValue Lo, SDValue Hi); 430 431 // Float Result Expansion. 432 void ExpandFloatResult(SDNode *N, unsigned ResNo); 433 void ExpandFloatRes_ConstantFP(SDNode *N, SDValue &Lo, SDValue &Hi); 434 void ExpandFloatRes_FABS (SDNode *N, SDValue &Lo, SDValue &Hi); 435 void ExpandFloatRes_FADD (SDNode *N, SDValue &Lo, SDValue &Hi); 436 void ExpandFloatRes_FCEIL (SDNode *N, SDValue &Lo, SDValue &Hi); 437 void ExpandFloatRes_FCOPYSIGN (SDNode *N, SDValue &Lo, SDValue &Hi); 438 void ExpandFloatRes_FCOS (SDNode *N, SDValue &Lo, SDValue &Hi); 439 void ExpandFloatRes_FDIV (SDNode *N, SDValue &Lo, SDValue &Hi); 440 void ExpandFloatRes_FEXP (SDNode *N, SDValue &Lo, SDValue &Hi); 441 void ExpandFloatRes_FEXP2 (SDNode *N, SDValue &Lo, SDValue &Hi); 442 void ExpandFloatRes_FFLOOR (SDNode *N, SDValue &Lo, SDValue &Hi); 443 void ExpandFloatRes_FLOG (SDNode *N, SDValue &Lo, SDValue &Hi); 444 void ExpandFloatRes_FLOG2 (SDNode *N, SDValue &Lo, SDValue &Hi); 445 void ExpandFloatRes_FLOG10 (SDNode *N, SDValue &Lo, SDValue &Hi); 446 void ExpandFloatRes_FMA (SDNode *N, SDValue &Lo, SDValue &Hi); 447 void ExpandFloatRes_FMUL (SDNode *N, SDValue &Lo, SDValue &Hi); 448 void ExpandFloatRes_FNEARBYINT(SDNode *N, SDValue &Lo, SDValue &Hi); 449 void ExpandFloatRes_FNEG (SDNode *N, SDValue &Lo, SDValue &Hi); 450 void ExpandFloatRes_FP_EXTEND (SDNode *N, SDValue &Lo, SDValue &Hi); 451 void ExpandFloatRes_FPOW (SDNode *N, SDValue &Lo, SDValue &Hi); 452 void ExpandFloatRes_FPOWI (SDNode *N, SDValue &Lo, SDValue &Hi); 453 void ExpandFloatRes_FRINT (SDNode *N, SDValue &Lo, SDValue &Hi); 454 void ExpandFloatRes_FSIN (SDNode *N, SDValue &Lo, SDValue &Hi); 455 void ExpandFloatRes_FSQRT (SDNode *N, SDValue &Lo, SDValue &Hi); 456 void ExpandFloatRes_FSUB (SDNode *N, SDValue &Lo, SDValue &Hi); 457 void ExpandFloatRes_FTRUNC (SDNode *N, SDValue &Lo, SDValue &Hi); 458 void ExpandFloatRes_LOAD (SDNode *N, SDValue &Lo, SDValue &Hi); 459 void ExpandFloatRes_XINT_TO_FP(SDNode *N, SDValue &Lo, SDValue &Hi); 460 461 // Float Operand Expansion. 462 bool ExpandFloatOperand(SDNode *N, unsigned OperandNo); 463 SDValue ExpandFloatOp_BR_CC(SDNode *N); 464 SDValue ExpandFloatOp_FP_ROUND(SDNode *N); 465 SDValue ExpandFloatOp_FP_TO_SINT(SDNode *N); 466 SDValue ExpandFloatOp_FP_TO_UINT(SDNode *N); 467 SDValue ExpandFloatOp_SELECT_CC(SDNode *N); 468 SDValue ExpandFloatOp_SETCC(SDNode *N); 469 SDValue ExpandFloatOp_STORE(SDNode *N, unsigned OpNo); 470 471 void FloatExpandSetCCOperands(SDValue &NewLHS, SDValue &NewRHS, 472 ISD::CondCode &CCCode, DebugLoc dl); 473 474 //===--------------------------------------------------------------------===// 475 // Scalarization Support: LegalizeVectorTypes.cpp 476 //===--------------------------------------------------------------------===// 477 478 /// GetScalarizedVector - Given a processed one-element vector Op which was 479 /// scalarized to its element type, this returns the element. For example, 480 /// if Op is a v1i32, Op = < i32 val >, this method returns val, an i32. 481 SDValue GetScalarizedVector(SDValue Op) { 482 SDValue &ScalarizedOp = ScalarizedVectors[Op]; 483 RemapValue(ScalarizedOp); 484 assert(ScalarizedOp.getNode() && "Operand wasn't scalarized?"); 485 return ScalarizedOp; 486 } 487 void SetScalarizedVector(SDValue Op, SDValue Result); 488 489 // Vector Result Scalarization: <1 x ty> -> ty. 490 void ScalarizeVectorResult(SDNode *N, unsigned OpNo); 491 SDValue ScalarizeVecRes_BinOp(SDNode *N); 492 SDValue ScalarizeVecRes_UnaryOp(SDNode *N); 493 SDValue ScalarizeVecRes_InregOp(SDNode *N); 494 495 SDValue ScalarizeVecRes_BITCAST(SDNode *N); 496 SDValue ScalarizeVecRes_CONVERT_RNDSAT(SDNode *N); 497 SDValue ScalarizeVecRes_EXTRACT_SUBVECTOR(SDNode *N); 498 SDValue ScalarizeVecRes_FP_ROUND(SDNode *N); 499 SDValue ScalarizeVecRes_FPOWI(SDNode *N); 500 SDValue ScalarizeVecRes_INSERT_VECTOR_ELT(SDNode *N); 501 SDValue ScalarizeVecRes_LOAD(LoadSDNode *N); 502 SDValue ScalarizeVecRes_SCALAR_TO_VECTOR(SDNode *N); 503 SDValue ScalarizeVecRes_SIGN_EXTEND_INREG(SDNode *N); 504 SDValue ScalarizeVecRes_SELECT(SDNode *N); 505 SDValue ScalarizeVecRes_SELECT_CC(SDNode *N); 506 SDValue ScalarizeVecRes_SETCC(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_BITCAST(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 vectors 523 /// of half the size, this method returns the halves. 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 void SplitVecRes_InregOp(SDNode *N, SDValue &Lo, SDValue &Hi); 537 538 void SplitVecRes_BITCAST(SDNode *N, SDValue &Lo, SDValue &Hi); 539 void SplitVecRes_BUILD_PAIR(SDNode *N, SDValue &Lo, SDValue &Hi); 540 void SplitVecRes_BUILD_VECTOR(SDNode *N, SDValue &Lo, SDValue &Hi); 541 void SplitVecRes_CONCAT_VECTORS(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_SIGN_EXTEND_INREG(SDNode *N, SDValue &Lo, SDValue &Hi); 548 void SplitVecRes_SETCC(SDNode *N, SDValue &Lo, SDValue &Hi); 549 void SplitVecRes_UNDEF(SDNode *N, SDValue &Lo, SDValue &Hi); 550 void SplitVecRes_VECTOR_SHUFFLE(ShuffleVectorSDNode *N, SDValue &Lo, 551 SDValue &Hi); 552 553 // Vector Operand Splitting: <128 x ty> -> 2 x <64 x ty>. 554 bool SplitVectorOperand(SDNode *N, unsigned OpNo); 555 SDValue SplitVecOp_UnaryOp(SDNode *N); 556 557 SDValue SplitVecOp_BITCAST(SDNode *N); 558 SDValue SplitVecOp_EXTRACT_SUBVECTOR(SDNode *N); 559 SDValue SplitVecOp_EXTRACT_VECTOR_ELT(SDNode *N); 560 SDValue SplitVecOp_STORE(StoreSDNode *N, unsigned OpNo); 561 SDValue SplitVecOp_CONCAT_VECTORS(SDNode *N); 562 SDValue SplitVecOp_FP_ROUND(SDNode *N); 563 564 //===--------------------------------------------------------------------===// 565 // Vector Widening Support: LegalizeVectorTypes.cpp 566 //===--------------------------------------------------------------------===// 567 568 /// GetWidenedVector - Given a processed vector Op which was widened into a 569 /// larger vector, this method returns the larger vector. The elements of 570 /// the returned vector consist of the elements of Op followed by elements 571 /// containing rubbish. For example, if Op is a v2i32 that was widened to a 572 /// v4i32, then this method returns a v4i32 for which the first two elements 573 /// are the same as those of Op, while the last two elements contain rubbish. 574 SDValue GetWidenedVector(SDValue Op) { 575 SDValue &WidenedOp = WidenedVectors[Op]; 576 RemapValue(WidenedOp); 577 assert(WidenedOp.getNode() && "Operand wasn't widened?"); 578 return WidenedOp; 579 } 580 void SetWidenedVector(SDValue Op, SDValue Result); 581 582 // Widen Vector Result Promotion. 583 void WidenVectorResult(SDNode *N, unsigned ResNo); 584 SDValue WidenVecRes_BITCAST(SDNode* N); 585 SDValue WidenVecRes_BUILD_VECTOR(SDNode* N); 586 SDValue WidenVecRes_CONCAT_VECTORS(SDNode* N); 587 SDValue WidenVecRes_CONVERT_RNDSAT(SDNode* N); 588 SDValue WidenVecRes_EXTRACT_SUBVECTOR(SDNode* N); 589 SDValue WidenVecRes_INSERT_VECTOR_ELT(SDNode* N); 590 SDValue WidenVecRes_LOAD(SDNode* N); 591 SDValue WidenVecRes_SCALAR_TO_VECTOR(SDNode* N); 592 SDValue WidenVecRes_SIGN_EXTEND_INREG(SDNode* N); 593 SDValue WidenVecRes_SELECT(SDNode* N); 594 SDValue WidenVecRes_SELECT_CC(SDNode* N); 595 SDValue WidenVecRes_SETCC(SDNode* N); 596 SDValue WidenVecRes_UNDEF(SDNode *N); 597 SDValue WidenVecRes_VECTOR_SHUFFLE(ShuffleVectorSDNode *N); 598 SDValue WidenVecRes_VSETCC(SDNode* N); 599 600 SDValue WidenVecRes_Binary(SDNode *N); 601 SDValue WidenVecRes_Convert(SDNode *N); 602 SDValue WidenVecRes_POWI(SDNode *N); 603 SDValue WidenVecRes_Shift(SDNode *N); 604 SDValue WidenVecRes_Unary(SDNode *N); 605 SDValue WidenVecRes_InregOp(SDNode *N); 606 607 // Widen Vector Operand. 608 bool WidenVectorOperand(SDNode *N, unsigned ResNo); 609 SDValue WidenVecOp_BITCAST(SDNode *N); 610 SDValue WidenVecOp_CONCAT_VECTORS(SDNode *N); 611 SDValue WidenVecOp_EXTRACT_VECTOR_ELT(SDNode *N); 612 SDValue WidenVecOp_EXTRACT_SUBVECTOR(SDNode *N); 613 SDValue WidenVecOp_STORE(SDNode* N); 614 615 SDValue WidenVecOp_Convert(SDNode *N); 616 617 //===--------------------------------------------------------------------===// 618 // Vector Widening Utilities Support: LegalizeVectorTypes.cpp 619 //===--------------------------------------------------------------------===// 620 621 /// Helper GenWidenVectorLoads - Helper function to generate a set of 622 /// loads to load a vector with a resulting wider type. It takes 623 /// LdChain: list of chains for the load to be generated. 624 /// Ld: load to widen 625 SDValue GenWidenVectorLoads(SmallVector<SDValue, 16>& LdChain, 626 LoadSDNode *LD); 627 628 /// GenWidenVectorExtLoads - Helper function to generate a set of extension 629 /// loads to load a ector with a resulting wider type. It takes 630 /// LdChain: list of chains for the load to be generated. 631 /// Ld: load to widen 632 /// ExtType: extension element type 633 SDValue GenWidenVectorExtLoads(SmallVector<SDValue, 16>& LdChain, 634 LoadSDNode *LD, ISD::LoadExtType ExtType); 635 636 /// Helper genWidenVectorStores - Helper function to generate a set of 637 /// stores to store a widen vector into non widen memory 638 /// StChain: list of chains for the stores we have generated 639 /// ST: store of a widen value 640 void GenWidenVectorStores(SmallVector<SDValue, 16>& StChain, StoreSDNode *ST); 641 642 /// Helper genWidenVectorTruncStores - Helper function to generate a set of 643 /// stores to store a truncate widen vector into non widen memory 644 /// StChain: list of chains for the stores we have generated 645 /// ST: store of a widen value 646 void GenWidenVectorTruncStores(SmallVector<SDValue, 16>& StChain, 647 StoreSDNode *ST); 648 649 /// Modifies a vector input (widen or narrows) to a vector of NVT. The 650 /// input vector must have the same element type as NVT. 651 SDValue ModifyToType(SDValue InOp, EVT WidenVT); 652 653 654 //===--------------------------------------------------------------------===// 655 // Generic Splitting: LegalizeTypesGeneric.cpp 656 //===--------------------------------------------------------------------===// 657 658 // Legalization methods which only use that the illegal type is split into two 659 // not necessarily identical types. As such they can be used for splitting 660 // vectors and expanding integers and floats. 661 662 void GetSplitOp(SDValue Op, SDValue &Lo, SDValue &Hi) { 663 if (Op.getValueType().isVector()) 664 GetSplitVector(Op, Lo, Hi); 665 else if (Op.getValueType().isInteger()) 666 GetExpandedInteger(Op, Lo, Hi); 667 else 668 GetExpandedFloat(Op, Lo, Hi); 669 } 670 671 /// GetSplitDestVTs - Compute the VTs needed for the low/hi parts of a type 672 /// which is split (or expanded) into two not necessarily identical pieces. 673 void GetSplitDestVTs(EVT InVT, EVT &LoVT, EVT &HiVT); 674 675 /// GetPairElements - Use ISD::EXTRACT_ELEMENT nodes to extract the low and 676 /// high parts of the given value. 677 void GetPairElements(SDValue Pair, SDValue &Lo, SDValue &Hi); 678 679 // Generic Result Splitting. 680 void SplitRes_MERGE_VALUES(SDNode *N, SDValue &Lo, SDValue &Hi); 681 void SplitRes_SELECT (SDNode *N, SDValue &Lo, SDValue &Hi); 682 void SplitRes_SELECT_CC (SDNode *N, SDValue &Lo, SDValue &Hi); 683 void SplitRes_UNDEF (SDNode *N, SDValue &Lo, SDValue &Hi); 684 685 //===--------------------------------------------------------------------===// 686 // Generic Expansion: LegalizeTypesGeneric.cpp 687 //===--------------------------------------------------------------------===// 688 689 // Legalization methods which only use that the illegal type is split into two 690 // identical types of half the size, and that the Lo/Hi part is stored first 691 // in memory on little/big-endian machines, followed by the Hi/Lo part. As 692 // such they can be used for expanding integers and floats. 693 694 void GetExpandedOp(SDValue Op, SDValue &Lo, SDValue &Hi) { 695 if (Op.getValueType().isInteger()) 696 GetExpandedInteger(Op, Lo, Hi); 697 else 698 GetExpandedFloat(Op, Lo, Hi); 699 } 700 701 // Generic Result Expansion. 702 void ExpandRes_BITCAST (SDNode *N, SDValue &Lo, SDValue &Hi); 703 void ExpandRes_BUILD_PAIR (SDNode *N, SDValue &Lo, SDValue &Hi); 704 void ExpandRes_EXTRACT_ELEMENT (SDNode *N, SDValue &Lo, SDValue &Hi); 705 void ExpandRes_EXTRACT_VECTOR_ELT(SDNode *N, SDValue &Lo, SDValue &Hi); 706 void ExpandRes_NormalLoad (SDNode *N, SDValue &Lo, SDValue &Hi); 707 void ExpandRes_VAARG (SDNode *N, SDValue &Lo, SDValue &Hi); 708 709 // Generic Operand Expansion. 710 SDValue ExpandOp_BITCAST (SDNode *N); 711 SDValue ExpandOp_BUILD_VECTOR (SDNode *N); 712 SDValue ExpandOp_EXTRACT_ELEMENT (SDNode *N); 713 SDValue ExpandOp_INSERT_VECTOR_ELT(SDNode *N); 714 SDValue ExpandOp_SCALAR_TO_VECTOR (SDNode *N); 715 SDValue ExpandOp_NormalStore (SDNode *N, unsigned OpNo); 716}; 717 718} // end namespace llvm. 719 720#endif 721