1 //===-- LegalizeTypes.h - DAG Type Legalizer class definition ---*- C++ -*-===// 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 #include "llvm/ADT/DenseMap.h" 20 #include "llvm/ADT/DenseSet.h" 21 #include "llvm/CodeGen/SelectionDAG.h" 22 #include "llvm/Support/Compiler.h" 23 #include "llvm/Support/Debug.h" 24 #include "llvm/Target/TargetLowering.h" 25 26 namespace 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 /// 34 class LLVM_LIBRARY_VISIBILITY DAGTypeLegalizer { 35 const TargetLowering &TLI; 36 SelectionDAG &DAG; 37 public: 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 }; 58 private: 59 60 /// ValueTypeActions - This is a bitvector that contains two bits for each 61 /// simple value type, where the two bits correspond to the LegalizeAction 62 /// enum from TargetLowering. This can be queried with "getTypeAction(VT)". 63 TargetLowering::ValueTypeActionImpl ValueTypeActions; 64 65 /// getTypeAction - Return how we should legalize values of this type. 66 TargetLowering::LegalizeTypeAction getTypeAction(EVT VT) const { 67 return TLI.getTypeAction(*DAG.getContext(), VT); 68 } 69 70 /// isTypeLegal - Return true if this type is legal on this target. 71 bool isTypeLegal(EVT VT) const { 72 return TLI.getTypeAction(*DAG.getContext(), VT) == TargetLowering::TypeLegal; 73 } 74 75 EVT getSetCCResultType(EVT VT) const { 76 return TLI.getSetCCResultType(*DAG.getContext(), VT); 77 } 78 79 /// IgnoreNodeResults - Pretend all of this node's results are legal. 80 bool IgnoreNodeResults(SDNode *N) const { 81 return N->getOpcode() == ISD::TargetConstant; 82 } 83 84 /// PromotedIntegers - For integer nodes that are below legal width, this map 85 /// indicates what promoted value to use. 86 SmallDenseMap<SDValue, SDValue, 8> PromotedIntegers; 87 88 /// ExpandedIntegers - For integer nodes that need to be expanded this map 89 /// indicates which operands are the expanded version of the input. 90 SmallDenseMap<SDValue, std::pair<SDValue, SDValue>, 8> ExpandedIntegers; 91 92 /// SoftenedFloats - For floating point nodes converted to integers of 93 /// the same size, this map indicates the converted value to use. 94 SmallDenseMap<SDValue, SDValue, 8> SoftenedFloats; 95 96 /// ExpandedFloats - For float nodes that need to be expanded this map 97 /// indicates which operands are the expanded version of the input. 98 SmallDenseMap<SDValue, std::pair<SDValue, SDValue>, 8> ExpandedFloats; 99 100 /// ScalarizedVectors - For nodes that are <1 x ty>, this map indicates the 101 /// scalar value of type 'ty' to use. 102 SmallDenseMap<SDValue, SDValue, 8> ScalarizedVectors; 103 104 /// SplitVectors - For nodes that need to be split this map indicates 105 /// which operands are the expanded version of the input. 106 SmallDenseMap<SDValue, std::pair<SDValue, SDValue>, 8> SplitVectors; 107 108 /// WidenedVectors - For vector nodes that need to be widened, indicates 109 /// the widened value to use. 110 SmallDenseMap<SDValue, SDValue, 8> WidenedVectors; 111 112 /// ReplacedValues - For values that have been replaced with another, 113 /// indicates the replacement value to use. 114 SmallDenseMap<SDValue, SDValue, 8> ReplacedValues; 115 116 /// Worklist - This defines a worklist of nodes to process. In order to be 117 /// pushed onto this worklist, all operands of a node must have already been 118 /// processed. 119 SmallVector<SDNode*, 128> Worklist; 120 121 public: 122 explicit DAGTypeLegalizer(SelectionDAG &dag) 123 : TLI(dag.getTargetLoweringInfo()), DAG(dag), 124 ValueTypeActions(TLI.getValueTypeActions()) { 125 assert(MVT::LAST_VALUETYPE <= MVT::MAX_ALLOWED_VALUETYPE && 126 "Too many value types for ValueTypeActions to hold!"); 127 } 128 129 /// run - This is the main entry point for the type legalizer. This does a 130 /// top-down traversal of the dag, legalizing types as it goes. Returns 131 /// "true" if it made any changes. 132 bool run(); 133 134 void NoteDeletion(SDNode *Old, SDNode *New) { 135 ExpungeNode(Old); 136 ExpungeNode(New); 137 for (unsigned i = 0, e = Old->getNumValues(); i != e; ++i) 138 ReplacedValues[SDValue(Old, i)] = SDValue(New, i); 139 } 140 141 SelectionDAG &getDAG() const { return DAG; } 142 143 private: 144 SDNode *AnalyzeNewNode(SDNode *N); 145 void AnalyzeNewValue(SDValue &Val); 146 void ExpungeNode(SDNode *N); 147 void PerformExpensiveChecks(); 148 void RemapValue(SDValue &N); 149 150 // Common routines. 151 SDValue BitConvertToInteger(SDValue Op); 152 SDValue BitConvertVectorToIntegerVector(SDValue Op); 153 SDValue CreateStackStoreLoad(SDValue Op, EVT DestVT); 154 bool CustomLowerNode(SDNode *N, EVT VT, bool LegalizeResult); 155 bool CustomWidenLowerNode(SDNode *N, EVT VT); 156 157 /// DisintegrateMERGE_VALUES - Replace each result of the given MERGE_VALUES 158 /// node with the corresponding input operand, except for the result 'ResNo', 159 /// for which the corresponding input operand is returned. 160 SDValue DisintegrateMERGE_VALUES(SDNode *N, unsigned ResNo); 161 162 SDValue GetVectorElementPointer(SDValue VecPtr, EVT EltVT, SDValue Index); 163 SDValue JoinIntegers(SDValue Lo, SDValue Hi); 164 SDValue LibCallify(RTLIB::Libcall LC, SDNode *N, bool isSigned); 165 166 std::pair<SDValue, SDValue> ExpandChainLibCall(RTLIB::Libcall LC, 167 SDNode *Node, bool isSigned); 168 std::pair<SDValue, SDValue> ExpandAtomic(SDNode *Node); 169 170 SDValue PromoteTargetBoolean(SDValue Bool, EVT ValVT); 171 void ReplaceValueWith(SDValue From, SDValue To); 172 void SplitInteger(SDValue Op, SDValue &Lo, SDValue &Hi); 173 void SplitInteger(SDValue Op, EVT LoVT, EVT HiVT, 174 SDValue &Lo, SDValue &Hi); 175 176 //===--------------------------------------------------------------------===// 177 // Integer Promotion Support: LegalizeIntegerTypes.cpp 178 //===--------------------------------------------------------------------===// 179 180 /// GetPromotedInteger - Given a processed operand Op which was promoted to a 181 /// larger integer type, this returns the promoted value. The low bits of the 182 /// promoted value corresponding to the original type are exactly equal to Op. 183 /// The extra bits contain rubbish, so the promoted value may need to be zero- 184 /// or sign-extended from the original type before it is usable (the helpers 185 /// SExtPromotedInteger and ZExtPromotedInteger can do this for you). 186 /// For example, if Op is an i16 and was promoted to an i32, then this method 187 /// returns an i32, the lower 16 bits of which coincide with Op, and the upper 188 /// 16 bits of which contain rubbish. 189 SDValue GetPromotedInteger(SDValue Op) { 190 SDValue &PromotedOp = PromotedIntegers[Op]; 191 RemapValue(PromotedOp); 192 assert(PromotedOp.getNode() && "Operand wasn't promoted?"); 193 return PromotedOp; 194 } 195 void SetPromotedInteger(SDValue Op, SDValue Result); 196 197 /// SExtPromotedInteger - Get a promoted operand and sign extend it to the 198 /// final size. 199 SDValue SExtPromotedInteger(SDValue Op) { 200 EVT OldVT = Op.getValueType(); 201 SDLoc dl(Op); 202 Op = GetPromotedInteger(Op); 203 return DAG.getNode(ISD::SIGN_EXTEND_INREG, dl, Op.getValueType(), Op, 204 DAG.getValueType(OldVT)); 205 } 206 207 /// ZExtPromotedInteger - Get a promoted operand and zero extend it to the 208 /// final size. 209 SDValue ZExtPromotedInteger(SDValue Op) { 210 EVT OldVT = Op.getValueType(); 211 SDLoc dl(Op); 212 Op = GetPromotedInteger(Op); 213 return DAG.getZeroExtendInReg(Op, dl, OldVT.getScalarType()); 214 } 215 216 // Integer Result Promotion. 217 void PromoteIntegerResult(SDNode *N, unsigned ResNo); 218 SDValue PromoteIntRes_MERGE_VALUES(SDNode *N, unsigned ResNo); 219 SDValue PromoteIntRes_AssertSext(SDNode *N); 220 SDValue PromoteIntRes_AssertZext(SDNode *N); 221 SDValue PromoteIntRes_Atomic0(AtomicSDNode *N); 222 SDValue PromoteIntRes_Atomic1(AtomicSDNode *N); 223 SDValue PromoteIntRes_AtomicCmpSwap(AtomicSDNode *N, unsigned ResNo); 224 SDValue PromoteIntRes_EXTRACT_SUBVECTOR(SDNode *N); 225 SDValue PromoteIntRes_VECTOR_SHUFFLE(SDNode *N); 226 SDValue PromoteIntRes_BUILD_VECTOR(SDNode *N); 227 SDValue PromoteIntRes_SCALAR_TO_VECTOR(SDNode *N); 228 SDValue PromoteIntRes_INSERT_VECTOR_ELT(SDNode *N); 229 SDValue PromoteIntRes_CONCAT_VECTORS(SDNode *N); 230 SDValue PromoteIntRes_BITCAST(SDNode *N); 231 SDValue PromoteIntRes_BSWAP(SDNode *N); 232 SDValue PromoteIntRes_BUILD_PAIR(SDNode *N); 233 SDValue PromoteIntRes_Constant(SDNode *N); 234 SDValue PromoteIntRes_CONVERT_RNDSAT(SDNode *N); 235 SDValue PromoteIntRes_CTLZ(SDNode *N); 236 SDValue PromoteIntRes_CTPOP(SDNode *N); 237 SDValue PromoteIntRes_CTTZ(SDNode *N); 238 SDValue PromoteIntRes_EXTRACT_VECTOR_ELT(SDNode *N); 239 SDValue PromoteIntRes_FP_TO_XINT(SDNode *N); 240 SDValue PromoteIntRes_FP32_TO_FP16(SDNode *N); 241 SDValue PromoteIntRes_INT_EXTEND(SDNode *N); 242 SDValue PromoteIntRes_LOAD(LoadSDNode *N); 243 SDValue PromoteIntRes_Overflow(SDNode *N); 244 SDValue PromoteIntRes_SADDSUBO(SDNode *N, unsigned ResNo); 245 SDValue PromoteIntRes_SDIV(SDNode *N); 246 SDValue PromoteIntRes_SELECT(SDNode *N); 247 SDValue PromoteIntRes_VSELECT(SDNode *N); 248 SDValue PromoteIntRes_SELECT_CC(SDNode *N); 249 SDValue PromoteIntRes_SETCC(SDNode *N); 250 SDValue PromoteIntRes_SHL(SDNode *N); 251 SDValue PromoteIntRes_SimpleIntBinOp(SDNode *N); 252 SDValue PromoteIntRes_SIGN_EXTEND_INREG(SDNode *N); 253 SDValue PromoteIntRes_SRA(SDNode *N); 254 SDValue PromoteIntRes_SRL(SDNode *N); 255 SDValue PromoteIntRes_TRUNCATE(SDNode *N); 256 SDValue PromoteIntRes_UADDSUBO(SDNode *N, unsigned ResNo); 257 SDValue PromoteIntRes_UDIV(SDNode *N); 258 SDValue PromoteIntRes_UNDEF(SDNode *N); 259 SDValue PromoteIntRes_VAARG(SDNode *N); 260 SDValue PromoteIntRes_XMULO(SDNode *N, unsigned ResNo); 261 262 // Integer Operand Promotion. 263 bool PromoteIntegerOperand(SDNode *N, unsigned OperandNo); 264 SDValue PromoteIntOp_ANY_EXTEND(SDNode *N); 265 SDValue PromoteIntOp_ATOMIC_STORE(AtomicSDNode *N); 266 SDValue PromoteIntOp_BITCAST(SDNode *N); 267 SDValue PromoteIntOp_BUILD_PAIR(SDNode *N); 268 SDValue PromoteIntOp_BR_CC(SDNode *N, unsigned OpNo); 269 SDValue PromoteIntOp_BRCOND(SDNode *N, unsigned OpNo); 270 SDValue PromoteIntOp_BUILD_VECTOR(SDNode *N); 271 SDValue PromoteIntOp_CONVERT_RNDSAT(SDNode *N); 272 SDValue PromoteIntOp_INSERT_VECTOR_ELT(SDNode *N, unsigned OpNo); 273 SDValue PromoteIntOp_EXTRACT_ELEMENT(SDNode *N); 274 SDValue PromoteIntOp_EXTRACT_VECTOR_ELT(SDNode *N); 275 SDValue PromoteIntOp_CONCAT_VECTORS(SDNode *N); 276 SDValue PromoteIntOp_SCALAR_TO_VECTOR(SDNode *N); 277 SDValue PromoteIntOp_SELECT(SDNode *N, unsigned OpNo); 278 SDValue PromoteIntOp_SELECT_CC(SDNode *N, unsigned OpNo); 279 SDValue PromoteIntOp_SETCC(SDNode *N, unsigned OpNo); 280 SDValue PromoteIntOp_VSETCC(SDNode *N, unsigned OpNo); 281 SDValue PromoteIntOp_Shift(SDNode *N); 282 SDValue PromoteIntOp_SIGN_EXTEND(SDNode *N); 283 SDValue PromoteIntOp_SINT_TO_FP(SDNode *N); 284 SDValue PromoteIntOp_STORE(StoreSDNode *N, unsigned OpNo); 285 SDValue PromoteIntOp_TRUNCATE(SDNode *N); 286 SDValue PromoteIntOp_UINT_TO_FP(SDNode *N); 287 SDValue PromoteIntOp_ZERO_EXTEND(SDNode *N); 288 289 void PromoteSetCCOperands(SDValue &LHS,SDValue &RHS, ISD::CondCode Code); 290 291 //===--------------------------------------------------------------------===// 292 // Integer Expansion Support: LegalizeIntegerTypes.cpp 293 //===--------------------------------------------------------------------===// 294 295 /// GetExpandedInteger - Given a processed operand Op which was expanded into 296 /// two integers of half the size, this returns the two halves. The low bits 297 /// of Op are exactly equal to the bits of Lo; the high bits exactly equal Hi. 298 /// For example, if Op is an i64 which was expanded into two i32's, then this 299 /// method returns the two i32's, with Lo being equal to the lower 32 bits of 300 /// Op, and Hi being equal to the upper 32 bits. 301 void GetExpandedInteger(SDValue Op, SDValue &Lo, SDValue &Hi); 302 void SetExpandedInteger(SDValue Op, SDValue Lo, SDValue Hi); 303 304 // Integer Result Expansion. 305 void ExpandIntegerResult(SDNode *N, unsigned ResNo); 306 void ExpandIntRes_MERGE_VALUES (SDNode *N, unsigned ResNo, 307 SDValue &Lo, SDValue &Hi); 308 void ExpandIntRes_ANY_EXTEND (SDNode *N, SDValue &Lo, SDValue &Hi); 309 void ExpandIntRes_AssertSext (SDNode *N, SDValue &Lo, SDValue &Hi); 310 void ExpandIntRes_AssertZext (SDNode *N, SDValue &Lo, SDValue &Hi); 311 void ExpandIntRes_Constant (SDNode *N, SDValue &Lo, SDValue &Hi); 312 void ExpandIntRes_CTLZ (SDNode *N, SDValue &Lo, SDValue &Hi); 313 void ExpandIntRes_CTPOP (SDNode *N, SDValue &Lo, SDValue &Hi); 314 void ExpandIntRes_CTTZ (SDNode *N, SDValue &Lo, SDValue &Hi); 315 void ExpandIntRes_LOAD (LoadSDNode *N, SDValue &Lo, SDValue &Hi); 316 void ExpandIntRes_SIGN_EXTEND (SDNode *N, SDValue &Lo, SDValue &Hi); 317 void ExpandIntRes_SIGN_EXTEND_INREG (SDNode *N, SDValue &Lo, SDValue &Hi); 318 void ExpandIntRes_TRUNCATE (SDNode *N, SDValue &Lo, SDValue &Hi); 319 void ExpandIntRes_ZERO_EXTEND (SDNode *N, SDValue &Lo, SDValue &Hi); 320 void ExpandIntRes_FP_TO_SINT (SDNode *N, SDValue &Lo, SDValue &Hi); 321 void ExpandIntRes_FP_TO_UINT (SDNode *N, SDValue &Lo, SDValue &Hi); 322 323 void ExpandIntRes_Logical (SDNode *N, SDValue &Lo, SDValue &Hi); 324 void ExpandIntRes_ADDSUB (SDNode *N, SDValue &Lo, SDValue &Hi); 325 void ExpandIntRes_ADDSUBC (SDNode *N, SDValue &Lo, SDValue &Hi); 326 void ExpandIntRes_ADDSUBE (SDNode *N, SDValue &Lo, SDValue &Hi); 327 void ExpandIntRes_BSWAP (SDNode *N, SDValue &Lo, SDValue &Hi); 328 void ExpandIntRes_MUL (SDNode *N, SDValue &Lo, SDValue &Hi); 329 void ExpandIntRes_SDIV (SDNode *N, SDValue &Lo, SDValue &Hi); 330 void ExpandIntRes_SREM (SDNode *N, SDValue &Lo, SDValue &Hi); 331 void ExpandIntRes_UDIV (SDNode *N, SDValue &Lo, SDValue &Hi); 332 void ExpandIntRes_UREM (SDNode *N, SDValue &Lo, SDValue &Hi); 333 void ExpandIntRes_Shift (SDNode *N, SDValue &Lo, SDValue &Hi); 334 335 void ExpandIntRes_SADDSUBO (SDNode *N, SDValue &Lo, SDValue &Hi); 336 void ExpandIntRes_UADDSUBO (SDNode *N, SDValue &Lo, SDValue &Hi); 337 void ExpandIntRes_XMULO (SDNode *N, SDValue &Lo, SDValue &Hi); 338 339 void ExpandIntRes_ATOMIC_LOAD (SDNode *N, SDValue &Lo, SDValue &Hi); 340 341 void ExpandShiftByConstant(SDNode *N, unsigned Amt, 342 SDValue &Lo, SDValue &Hi); 343 bool ExpandShiftWithKnownAmountBit(SDNode *N, SDValue &Lo, SDValue &Hi); 344 bool ExpandShiftWithUnknownAmountBit(SDNode *N, SDValue &Lo, SDValue &Hi); 345 346 // Integer Operand Expansion. 347 bool ExpandIntegerOperand(SDNode *N, unsigned OperandNo); 348 SDValue ExpandIntOp_BITCAST(SDNode *N); 349 SDValue ExpandIntOp_BR_CC(SDNode *N); 350 SDValue ExpandIntOp_BUILD_VECTOR(SDNode *N); 351 SDValue ExpandIntOp_EXTRACT_ELEMENT(SDNode *N); 352 SDValue ExpandIntOp_SELECT_CC(SDNode *N); 353 SDValue ExpandIntOp_SETCC(SDNode *N); 354 SDValue ExpandIntOp_Shift(SDNode *N); 355 SDValue ExpandIntOp_SINT_TO_FP(SDNode *N); 356 SDValue ExpandIntOp_STORE(StoreSDNode *N, unsigned OpNo); 357 SDValue ExpandIntOp_TRUNCATE(SDNode *N); 358 SDValue ExpandIntOp_UINT_TO_FP(SDNode *N); 359 SDValue ExpandIntOp_RETURNADDR(SDNode *N); 360 SDValue ExpandIntOp_ATOMIC_STORE(SDNode *N); 361 362 void IntegerExpandSetCCOperands(SDValue &NewLHS, SDValue &NewRHS, 363 ISD::CondCode &CCCode, SDLoc dl); 364 365 //===--------------------------------------------------------------------===// 366 // Float to Integer Conversion Support: LegalizeFloatTypes.cpp 367 //===--------------------------------------------------------------------===// 368 369 /// GetSoftenedFloat - Given a processed operand Op which was converted to an 370 /// integer of the same size, this returns the integer. The integer contains 371 /// exactly the same bits as Op - only the type changed. For example, if Op 372 /// is an f32 which was softened to an i32, then this method returns an i32, 373 /// the bits of which coincide with those of Op. 374 SDValue GetSoftenedFloat(SDValue Op) { 375 SDValue &SoftenedOp = SoftenedFloats[Op]; 376 RemapValue(SoftenedOp); 377 assert(SoftenedOp.getNode() && "Operand wasn't converted to integer?"); 378 return SoftenedOp; 379 } 380 void SetSoftenedFloat(SDValue Op, SDValue Result); 381 382 // Result Float to Integer Conversion. 383 void SoftenFloatResult(SDNode *N, unsigned OpNo); 384 SDValue SoftenFloatRes_MERGE_VALUES(SDNode *N, unsigned ResNo); 385 SDValue SoftenFloatRes_BITCAST(SDNode *N); 386 SDValue SoftenFloatRes_BUILD_PAIR(SDNode *N); 387 SDValue SoftenFloatRes_ConstantFP(ConstantFPSDNode *N); 388 SDValue SoftenFloatRes_EXTRACT_VECTOR_ELT(SDNode *N); 389 SDValue SoftenFloatRes_FABS(SDNode *N); 390 SDValue SoftenFloatRes_FADD(SDNode *N); 391 SDValue SoftenFloatRes_FCEIL(SDNode *N); 392 SDValue SoftenFloatRes_FCOPYSIGN(SDNode *N); 393 SDValue SoftenFloatRes_FCOS(SDNode *N); 394 SDValue SoftenFloatRes_FDIV(SDNode *N); 395 SDValue SoftenFloatRes_FEXP(SDNode *N); 396 SDValue SoftenFloatRes_FEXP2(SDNode *N); 397 SDValue SoftenFloatRes_FFLOOR(SDNode *N); 398 SDValue SoftenFloatRes_FLOG(SDNode *N); 399 SDValue SoftenFloatRes_FLOG2(SDNode *N); 400 SDValue SoftenFloatRes_FLOG10(SDNode *N); 401 SDValue SoftenFloatRes_FMA(SDNode *N); 402 SDValue SoftenFloatRes_FMUL(SDNode *N); 403 SDValue SoftenFloatRes_FNEARBYINT(SDNode *N); 404 SDValue SoftenFloatRes_FNEG(SDNode *N); 405 SDValue SoftenFloatRes_FP_EXTEND(SDNode *N); 406 SDValue SoftenFloatRes_FP16_TO_FP32(SDNode *N); 407 SDValue SoftenFloatRes_FP_ROUND(SDNode *N); 408 SDValue SoftenFloatRes_FPOW(SDNode *N); 409 SDValue SoftenFloatRes_FPOWI(SDNode *N); 410 SDValue SoftenFloatRes_FREM(SDNode *N); 411 SDValue SoftenFloatRes_FRINT(SDNode *N); 412 SDValue SoftenFloatRes_FROUND(SDNode *N); 413 SDValue SoftenFloatRes_FSIN(SDNode *N); 414 SDValue SoftenFloatRes_FSQRT(SDNode *N); 415 SDValue SoftenFloatRes_FSUB(SDNode *N); 416 SDValue SoftenFloatRes_FTRUNC(SDNode *N); 417 SDValue SoftenFloatRes_LOAD(SDNode *N); 418 SDValue SoftenFloatRes_SELECT(SDNode *N); 419 SDValue SoftenFloatRes_SELECT_CC(SDNode *N); 420 SDValue SoftenFloatRes_UNDEF(SDNode *N); 421 SDValue SoftenFloatRes_VAARG(SDNode *N); 422 SDValue SoftenFloatRes_XINT_TO_FP(SDNode *N); 423 424 // Operand Float to Integer Conversion. 425 bool SoftenFloatOperand(SDNode *N, unsigned OpNo); 426 SDValue SoftenFloatOp_BITCAST(SDNode *N); 427 SDValue SoftenFloatOp_BR_CC(SDNode *N); 428 SDValue SoftenFloatOp_FP_ROUND(SDNode *N); 429 SDValue SoftenFloatOp_FP_TO_SINT(SDNode *N); 430 SDValue SoftenFloatOp_FP_TO_UINT(SDNode *N); 431 SDValue SoftenFloatOp_FP32_TO_FP16(SDNode *N); 432 SDValue SoftenFloatOp_SELECT_CC(SDNode *N); 433 SDValue SoftenFloatOp_SETCC(SDNode *N); 434 SDValue SoftenFloatOp_STORE(SDNode *N, unsigned OpNo); 435 436 //===--------------------------------------------------------------------===// 437 // Float Expansion Support: LegalizeFloatTypes.cpp 438 //===--------------------------------------------------------------------===// 439 440 /// GetExpandedFloat - Given a processed operand Op which was expanded into 441 /// two floating point values of half the size, this returns the two halves. 442 /// The low bits of Op are exactly equal to the bits of Lo; the high bits 443 /// exactly equal Hi. For example, if Op is a ppcf128 which was expanded 444 /// into two f64's, then this method returns the two f64's, with Lo being 445 /// equal to the lower 64 bits of Op, and Hi to the upper 64 bits. 446 void GetExpandedFloat(SDValue Op, SDValue &Lo, SDValue &Hi); 447 void SetExpandedFloat(SDValue Op, SDValue Lo, SDValue Hi); 448 449 // Float Result Expansion. 450 void ExpandFloatResult(SDNode *N, unsigned ResNo); 451 void ExpandFloatRes_ConstantFP(SDNode *N, SDValue &Lo, SDValue &Hi); 452 void ExpandFloatRes_FABS (SDNode *N, SDValue &Lo, SDValue &Hi); 453 void ExpandFloatRes_FADD (SDNode *N, SDValue &Lo, SDValue &Hi); 454 void ExpandFloatRes_FCEIL (SDNode *N, SDValue &Lo, SDValue &Hi); 455 void ExpandFloatRes_FCOPYSIGN (SDNode *N, SDValue &Lo, SDValue &Hi); 456 void ExpandFloatRes_FCOS (SDNode *N, SDValue &Lo, SDValue &Hi); 457 void ExpandFloatRes_FDIV (SDNode *N, SDValue &Lo, SDValue &Hi); 458 void ExpandFloatRes_FEXP (SDNode *N, SDValue &Lo, SDValue &Hi); 459 void ExpandFloatRes_FEXP2 (SDNode *N, SDValue &Lo, SDValue &Hi); 460 void ExpandFloatRes_FFLOOR (SDNode *N, SDValue &Lo, SDValue &Hi); 461 void ExpandFloatRes_FLOG (SDNode *N, SDValue &Lo, SDValue &Hi); 462 void ExpandFloatRes_FLOG2 (SDNode *N, SDValue &Lo, SDValue &Hi); 463 void ExpandFloatRes_FLOG10 (SDNode *N, SDValue &Lo, SDValue &Hi); 464 void ExpandFloatRes_FMA (SDNode *N, SDValue &Lo, SDValue &Hi); 465 void ExpandFloatRes_FMUL (SDNode *N, SDValue &Lo, SDValue &Hi); 466 void ExpandFloatRes_FNEARBYINT(SDNode *N, SDValue &Lo, SDValue &Hi); 467 void ExpandFloatRes_FNEG (SDNode *N, SDValue &Lo, SDValue &Hi); 468 void ExpandFloatRes_FP_EXTEND (SDNode *N, SDValue &Lo, SDValue &Hi); 469 void ExpandFloatRes_FPOW (SDNode *N, SDValue &Lo, SDValue &Hi); 470 void ExpandFloatRes_FPOWI (SDNode *N, SDValue &Lo, SDValue &Hi); 471 void ExpandFloatRes_FREM (SDNode *N, SDValue &Lo, SDValue &Hi); 472 void ExpandFloatRes_FRINT (SDNode *N, SDValue &Lo, SDValue &Hi); 473 void ExpandFloatRes_FROUND (SDNode *N, SDValue &Lo, SDValue &Hi); 474 void ExpandFloatRes_FSIN (SDNode *N, SDValue &Lo, SDValue &Hi); 475 void ExpandFloatRes_FSQRT (SDNode *N, SDValue &Lo, SDValue &Hi); 476 void ExpandFloatRes_FSUB (SDNode *N, SDValue &Lo, SDValue &Hi); 477 void ExpandFloatRes_FTRUNC (SDNode *N, SDValue &Lo, SDValue &Hi); 478 void ExpandFloatRes_LOAD (SDNode *N, SDValue &Lo, SDValue &Hi); 479 void ExpandFloatRes_XINT_TO_FP(SDNode *N, SDValue &Lo, SDValue &Hi); 480 481 // Float Operand Expansion. 482 bool ExpandFloatOperand(SDNode *N, unsigned OperandNo); 483 SDValue ExpandFloatOp_BR_CC(SDNode *N); 484 SDValue ExpandFloatOp_FCOPYSIGN(SDNode *N); 485 SDValue ExpandFloatOp_FP_ROUND(SDNode *N); 486 SDValue ExpandFloatOp_FP_TO_SINT(SDNode *N); 487 SDValue ExpandFloatOp_FP_TO_UINT(SDNode *N); 488 SDValue ExpandFloatOp_SELECT_CC(SDNode *N); 489 SDValue ExpandFloatOp_SETCC(SDNode *N); 490 SDValue ExpandFloatOp_STORE(SDNode *N, unsigned OpNo); 491 492 void FloatExpandSetCCOperands(SDValue &NewLHS, SDValue &NewRHS, 493 ISD::CondCode &CCCode, SDLoc dl); 494 495 //===--------------------------------------------------------------------===// 496 // Scalarization Support: LegalizeVectorTypes.cpp 497 //===--------------------------------------------------------------------===// 498 499 /// GetScalarizedVector - Given a processed one-element vector Op which was 500 /// scalarized to its element type, this returns the element. For example, 501 /// if Op is a v1i32, Op = < i32 val >, this method returns val, an i32. 502 SDValue GetScalarizedVector(SDValue Op) { 503 SDValue &ScalarizedOp = ScalarizedVectors[Op]; 504 RemapValue(ScalarizedOp); 505 assert(ScalarizedOp.getNode() && "Operand wasn't scalarized?"); 506 return ScalarizedOp; 507 } 508 void SetScalarizedVector(SDValue Op, SDValue Result); 509 510 // Vector Result Scalarization: <1 x ty> -> ty. 511 void ScalarizeVectorResult(SDNode *N, unsigned OpNo); 512 SDValue ScalarizeVecRes_MERGE_VALUES(SDNode *N, unsigned ResNo); 513 SDValue ScalarizeVecRes_BinOp(SDNode *N); 514 SDValue ScalarizeVecRes_TernaryOp(SDNode *N); 515 SDValue ScalarizeVecRes_UnaryOp(SDNode *N); 516 SDValue ScalarizeVecRes_InregOp(SDNode *N); 517 518 SDValue ScalarizeVecRes_BITCAST(SDNode *N); 519 SDValue ScalarizeVecRes_BUILD_VECTOR(SDNode *N); 520 SDValue ScalarizeVecRes_CONVERT_RNDSAT(SDNode *N); 521 SDValue ScalarizeVecRes_EXTRACT_SUBVECTOR(SDNode *N); 522 SDValue ScalarizeVecRes_FP_ROUND(SDNode *N); 523 SDValue ScalarizeVecRes_FPOWI(SDNode *N); 524 SDValue ScalarizeVecRes_INSERT_VECTOR_ELT(SDNode *N); 525 SDValue ScalarizeVecRes_LOAD(LoadSDNode *N); 526 SDValue ScalarizeVecRes_SCALAR_TO_VECTOR(SDNode *N); 527 SDValue ScalarizeVecRes_SIGN_EXTEND_INREG(SDNode *N); 528 SDValue ScalarizeVecRes_VSELECT(SDNode *N); 529 SDValue ScalarizeVecRes_SELECT(SDNode *N); 530 SDValue ScalarizeVecRes_SELECT_CC(SDNode *N); 531 SDValue ScalarizeVecRes_SETCC(SDNode *N); 532 SDValue ScalarizeVecRes_UNDEF(SDNode *N); 533 SDValue ScalarizeVecRes_VECTOR_SHUFFLE(SDNode *N); 534 SDValue ScalarizeVecRes_VSETCC(SDNode *N); 535 536 // Vector Operand Scalarization: <1 x ty> -> ty. 537 bool ScalarizeVectorOperand(SDNode *N, unsigned OpNo); 538 SDValue ScalarizeVecOp_BITCAST(SDNode *N); 539 SDValue ScalarizeVecOp_UnaryOp(SDNode *N); 540 SDValue ScalarizeVecOp_CONCAT_VECTORS(SDNode *N); 541 SDValue ScalarizeVecOp_EXTRACT_VECTOR_ELT(SDNode *N); 542 SDValue ScalarizeVecOp_VSELECT(SDNode *N); 543 SDValue ScalarizeVecOp_STORE(StoreSDNode *N, unsigned OpNo); 544 SDValue ScalarizeVecOp_FP_ROUND(SDNode *N, unsigned OpNo); 545 546 //===--------------------------------------------------------------------===// 547 // Vector Splitting Support: LegalizeVectorTypes.cpp 548 //===--------------------------------------------------------------------===// 549 550 /// GetSplitVector - Given a processed vector Op which was split into vectors 551 /// of half the size, this method returns the halves. The first elements of 552 /// Op coincide with the elements of Lo; the remaining elements of Op coincide 553 /// with the elements of Hi: Op is what you would get by concatenating Lo and 554 /// Hi. For example, if Op is a v8i32 that was split into two v4i32's, then 555 /// this method returns the two v4i32's, with Lo corresponding to the first 4 556 /// elements of Op, and Hi to the last 4 elements. 557 void GetSplitVector(SDValue Op, SDValue &Lo, SDValue &Hi); 558 void SetSplitVector(SDValue Op, SDValue Lo, SDValue Hi); 559 560 // Vector Result Splitting: <128 x ty> -> 2 x <64 x ty>. 561 void SplitVectorResult(SDNode *N, unsigned OpNo); 562 void SplitVecRes_BinOp(SDNode *N, SDValue &Lo, SDValue &Hi); 563 void SplitVecRes_TernaryOp(SDNode *N, SDValue &Lo, SDValue &Hi); 564 void SplitVecRes_UnaryOp(SDNode *N, SDValue &Lo, SDValue &Hi); 565 void SplitVecRes_ExtendOp(SDNode *N, SDValue &Lo, SDValue &Hi); 566 void SplitVecRes_InregOp(SDNode *N, SDValue &Lo, SDValue &Hi); 567 568 void SplitVecRes_BITCAST(SDNode *N, SDValue &Lo, SDValue &Hi); 569 void SplitVecRes_BUILD_PAIR(SDNode *N, SDValue &Lo, SDValue &Hi); 570 void SplitVecRes_BUILD_VECTOR(SDNode *N, SDValue &Lo, SDValue &Hi); 571 void SplitVecRes_CONCAT_VECTORS(SDNode *N, SDValue &Lo, SDValue &Hi); 572 void SplitVecRes_EXTRACT_SUBVECTOR(SDNode *N, SDValue &Lo, SDValue &Hi); 573 void SplitVecRes_INSERT_SUBVECTOR(SDNode *N, SDValue &Lo, SDValue &Hi); 574 void SplitVecRes_FPOWI(SDNode *N, SDValue &Lo, SDValue &Hi); 575 void SplitVecRes_INSERT_VECTOR_ELT(SDNode *N, SDValue &Lo, SDValue &Hi); 576 void SplitVecRes_LOAD(LoadSDNode *N, SDValue &Lo, SDValue &Hi); 577 void SplitVecRes_SCALAR_TO_VECTOR(SDNode *N, SDValue &Lo, SDValue &Hi); 578 void SplitVecRes_SIGN_EXTEND_INREG(SDNode *N, SDValue &Lo, SDValue &Hi); 579 void SplitVecRes_SETCC(SDNode *N, SDValue &Lo, SDValue &Hi); 580 void SplitVecRes_UNDEF(SDNode *N, SDValue &Lo, SDValue &Hi); 581 void SplitVecRes_VECTOR_SHUFFLE(ShuffleVectorSDNode *N, SDValue &Lo, 582 SDValue &Hi); 583 584 // Vector Operand Splitting: <128 x ty> -> 2 x <64 x ty>. 585 bool SplitVectorOperand(SDNode *N, unsigned OpNo); 586 SDValue SplitVecOp_VSELECT(SDNode *N, unsigned OpNo); 587 SDValue SplitVecOp_UnaryOp(SDNode *N); 588 589 SDValue SplitVecOp_BITCAST(SDNode *N); 590 SDValue SplitVecOp_EXTRACT_SUBVECTOR(SDNode *N); 591 SDValue SplitVecOp_EXTRACT_VECTOR_ELT(SDNode *N); 592 SDValue SplitVecOp_STORE(StoreSDNode *N, unsigned OpNo); 593 SDValue SplitVecOp_CONCAT_VECTORS(SDNode *N); 594 SDValue SplitVecOp_TRUNCATE(SDNode *N); 595 SDValue SplitVecOp_VSETCC(SDNode *N); 596 SDValue SplitVecOp_FP_ROUND(SDNode *N); 597 598 //===--------------------------------------------------------------------===// 599 // Vector Widening Support: LegalizeVectorTypes.cpp 600 //===--------------------------------------------------------------------===// 601 602 /// GetWidenedVector - Given a processed vector Op which was widened into a 603 /// larger vector, this method returns the larger vector. The elements of 604 /// the returned vector consist of the elements of Op followed by elements 605 /// containing rubbish. For example, if Op is a v2i32 that was widened to a 606 /// v4i32, then this method returns a v4i32 for which the first two elements 607 /// are the same as those of Op, while the last two elements contain rubbish. 608 SDValue GetWidenedVector(SDValue Op) { 609 SDValue &WidenedOp = WidenedVectors[Op]; 610 RemapValue(WidenedOp); 611 assert(WidenedOp.getNode() && "Operand wasn't widened?"); 612 return WidenedOp; 613 } 614 void SetWidenedVector(SDValue Op, SDValue Result); 615 616 // Widen Vector Result Promotion. 617 void WidenVectorResult(SDNode *N, unsigned ResNo); 618 SDValue WidenVecRes_MERGE_VALUES(SDNode* N, unsigned ResNo); 619 SDValue WidenVecRes_BITCAST(SDNode* N); 620 SDValue WidenVecRes_BUILD_VECTOR(SDNode* N); 621 SDValue WidenVecRes_CONCAT_VECTORS(SDNode* N); 622 SDValue WidenVecRes_CONVERT_RNDSAT(SDNode* N); 623 SDValue WidenVecRes_EXTRACT_SUBVECTOR(SDNode* N); 624 SDValue WidenVecRes_INSERT_VECTOR_ELT(SDNode* N); 625 SDValue WidenVecRes_LOAD(SDNode* N); 626 SDValue WidenVecRes_SCALAR_TO_VECTOR(SDNode* N); 627 SDValue WidenVecRes_SIGN_EXTEND_INREG(SDNode* N); 628 SDValue WidenVecRes_SELECT(SDNode* N); 629 SDValue WidenVecRes_SELECT_CC(SDNode* N); 630 SDValue WidenVecRes_SETCC(SDNode* N); 631 SDValue WidenVecRes_UNDEF(SDNode *N); 632 SDValue WidenVecRes_VECTOR_SHUFFLE(ShuffleVectorSDNode *N); 633 SDValue WidenVecRes_VSETCC(SDNode* N); 634 635 SDValue WidenVecRes_Ternary(SDNode *N); 636 SDValue WidenVecRes_Binary(SDNode *N); 637 SDValue WidenVecRes_BinaryCanTrap(SDNode *N); 638 SDValue WidenVecRes_Convert(SDNode *N); 639 SDValue WidenVecRes_POWI(SDNode *N); 640 SDValue WidenVecRes_Shift(SDNode *N); 641 SDValue WidenVecRes_Unary(SDNode *N); 642 SDValue WidenVecRes_InregOp(SDNode *N); 643 644 // Widen Vector Operand. 645 bool WidenVectorOperand(SDNode *N, unsigned OpNo); 646 SDValue WidenVecOp_BITCAST(SDNode *N); 647 SDValue WidenVecOp_CONCAT_VECTORS(SDNode *N); 648 SDValue WidenVecOp_EXTEND(SDNode *N); 649 SDValue WidenVecOp_EXTRACT_VECTOR_ELT(SDNode *N); 650 SDValue WidenVecOp_EXTRACT_SUBVECTOR(SDNode *N); 651 SDValue WidenVecOp_STORE(SDNode* N); 652 SDValue WidenVecOp_SETCC(SDNode* N); 653 654 SDValue WidenVecOp_Convert(SDNode *N); 655 656 //===--------------------------------------------------------------------===// 657 // Vector Widening Utilities Support: LegalizeVectorTypes.cpp 658 //===--------------------------------------------------------------------===// 659 660 /// Helper GenWidenVectorLoads - Helper function to generate a set of 661 /// loads to load a vector with a resulting wider type. It takes 662 /// LdChain: list of chains for the load to be generated. 663 /// Ld: load to widen 664 SDValue GenWidenVectorLoads(SmallVectorImpl<SDValue> &LdChain, 665 LoadSDNode *LD); 666 667 /// GenWidenVectorExtLoads - Helper function to generate a set of extension 668 /// loads to load a ector with a resulting wider type. It takes 669 /// LdChain: list of chains for the load to be generated. 670 /// Ld: load to widen 671 /// ExtType: extension element type 672 SDValue GenWidenVectorExtLoads(SmallVectorImpl<SDValue> &LdChain, 673 LoadSDNode *LD, ISD::LoadExtType ExtType); 674 675 /// Helper genWidenVectorStores - Helper function to generate a set of 676 /// stores to store a widen vector into non-widen memory 677 /// StChain: list of chains for the stores we have generated 678 /// ST: store of a widen value 679 void GenWidenVectorStores(SmallVectorImpl<SDValue> &StChain, StoreSDNode *ST); 680 681 /// Helper genWidenVectorTruncStores - Helper function to generate a set of 682 /// stores to store a truncate widen vector into non-widen memory 683 /// StChain: list of chains for the stores we have generated 684 /// ST: store of a widen value 685 void GenWidenVectorTruncStores(SmallVectorImpl<SDValue> &StChain, 686 StoreSDNode *ST); 687 688 /// Modifies a vector input (widen or narrows) to a vector of NVT. The 689 /// input vector must have the same element type as NVT. 690 SDValue ModifyToType(SDValue InOp, EVT WidenVT); 691 692 693 //===--------------------------------------------------------------------===// 694 // Generic Splitting: LegalizeTypesGeneric.cpp 695 //===--------------------------------------------------------------------===// 696 697 // Legalization methods which only use that the illegal type is split into two 698 // not necessarily identical types. As such they can be used for splitting 699 // vectors and expanding integers and floats. 700 701 void GetSplitOp(SDValue Op, SDValue &Lo, SDValue &Hi) { 702 if (Op.getValueType().isVector()) 703 GetSplitVector(Op, Lo, Hi); 704 else if (Op.getValueType().isInteger()) 705 GetExpandedInteger(Op, Lo, Hi); 706 else 707 GetExpandedFloat(Op, Lo, Hi); 708 } 709 710 /// GetPairElements - Use ISD::EXTRACT_ELEMENT nodes to extract the low and 711 /// high parts of the given value. 712 void GetPairElements(SDValue Pair, SDValue &Lo, SDValue &Hi); 713 714 // Generic Result Splitting. 715 void SplitRes_MERGE_VALUES(SDNode *N, unsigned ResNo, 716 SDValue &Lo, SDValue &Hi); 717 void SplitRes_SELECT (SDNode *N, SDValue &Lo, SDValue &Hi); 718 void SplitRes_SELECT_CC (SDNode *N, SDValue &Lo, SDValue &Hi); 719 void SplitRes_UNDEF (SDNode *N, SDValue &Lo, SDValue &Hi); 720 721 //===--------------------------------------------------------------------===// 722 // Generic Expansion: LegalizeTypesGeneric.cpp 723 //===--------------------------------------------------------------------===// 724 725 // Legalization methods which only use that the illegal type is split into two 726 // identical types of half the size, and that the Lo/Hi part is stored first 727 // in memory on little/big-endian machines, followed by the Hi/Lo part. As 728 // such they can be used for expanding integers and floats. 729 730 void GetExpandedOp(SDValue Op, SDValue &Lo, SDValue &Hi) { 731 if (Op.getValueType().isInteger()) 732 GetExpandedInteger(Op, Lo, Hi); 733 else 734 GetExpandedFloat(Op, Lo, Hi); 735 } 736 737 738 /// This function will split the integer \p Op into \p NumElements 739 /// operations of type \p EltVT and store them in \p Ops. 740 void IntegerToVector(SDValue Op, unsigned NumElements, 741 SmallVectorImpl<SDValue> &Ops, EVT EltVT); 742 743 // Generic Result Expansion. 744 void ExpandRes_MERGE_VALUES (SDNode *N, unsigned ResNo, 745 SDValue &Lo, SDValue &Hi); 746 void ExpandRes_BITCAST (SDNode *N, SDValue &Lo, SDValue &Hi); 747 void ExpandRes_BUILD_PAIR (SDNode *N, SDValue &Lo, SDValue &Hi); 748 void ExpandRes_EXTRACT_ELEMENT (SDNode *N, SDValue &Lo, SDValue &Hi); 749 void ExpandRes_EXTRACT_VECTOR_ELT(SDNode *N, SDValue &Lo, SDValue &Hi); 750 void ExpandRes_NormalLoad (SDNode *N, SDValue &Lo, SDValue &Hi); 751 void ExpandRes_VAARG (SDNode *N, SDValue &Lo, SDValue &Hi); 752 753 // Generic Operand Expansion. 754 SDValue ExpandOp_BITCAST (SDNode *N); 755 SDValue ExpandOp_BUILD_VECTOR (SDNode *N); 756 SDValue ExpandOp_EXTRACT_ELEMENT (SDNode *N); 757 SDValue ExpandOp_INSERT_VECTOR_ELT(SDNode *N); 758 SDValue ExpandOp_SCALAR_TO_VECTOR (SDNode *N); 759 SDValue ExpandOp_NormalStore (SDNode *N, unsigned OpNo); 760 }; 761 762 } // end namespace llvm. 763 764 #endif 765
