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 #define DEBUG_TYPE "legalize-types" 20 #include "llvm/ADT/DenseMap.h" 21 #include "llvm/ADT/DenseSet.h" 22 #include "llvm/CodeGen/SelectionDAG.h" 23 #include "llvm/Support/Compiler.h" 24 #include "llvm/Support/Debug.h" 25 #include "llvm/Target/TargetLowering.h" 26 27 namespace 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 /// 35 class LLVM_LIBRARY_VISIBILITY DAGTypeLegalizer { 36 const TargetLowering &TLI; 37 SelectionDAG &DAG; 38 public: 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 }; 59 private: 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 EVT getSetCCResultType(EVT VT) const { 77 return TLI.getSetCCResultType(*DAG.getContext(), VT); 78 } 79 80 /// IgnoreNodeResults - Pretend all of this node's results are legal. 81 bool IgnoreNodeResults(SDNode *N) const { 82 return N->getOpcode() == ISD::TargetConstant; 83 } 84 85 /// PromotedIntegers - For integer nodes that are below legal width, this map 86 /// indicates what promoted value to use. 87 SmallDenseMap<SDValue, SDValue, 8> PromotedIntegers; 88 89 /// ExpandedIntegers - For integer nodes that need to be expanded this map 90 /// indicates which operands are the expanded version of the input. 91 SmallDenseMap<SDValue, std::pair<SDValue, SDValue>, 8> ExpandedIntegers; 92 93 /// SoftenedFloats - For floating point nodes converted to integers of 94 /// the same size, this map indicates the converted value to use. 95 SmallDenseMap<SDValue, SDValue, 8> SoftenedFloats; 96 97 /// ExpandedFloats - For float nodes that need to be expanded this map 98 /// indicates which operands are the expanded version of the input. 99 SmallDenseMap<SDValue, std::pair<SDValue, SDValue>, 8> ExpandedFloats; 100 101 /// ScalarizedVectors - For nodes that are <1 x ty>, this map indicates the 102 /// scalar value of type 'ty' to use. 103 SmallDenseMap<SDValue, SDValue, 8> ScalarizedVectors; 104 105 /// SplitVectors - For nodes that need to be split this map indicates 106 /// which operands are the expanded version of the input. 107 SmallDenseMap<SDValue, std::pair<SDValue, SDValue>, 8> SplitVectors; 108 109 /// WidenedVectors - For vector nodes that need to be widened, indicates 110 /// the widened value to use. 111 SmallDenseMap<SDValue, SDValue, 8> WidenedVectors; 112 113 /// ReplacedValues - For values that have been replaced with another, 114 /// indicates the replacement value to use. 115 SmallDenseMap<SDValue, SDValue, 8> ReplacedValues; 116 117 /// Worklist - This defines a worklist of nodes to process. In order to be 118 /// pushed onto this worklist, all operands of a node must have already been 119 /// processed. 120 SmallVector<SDNode*, 128> Worklist; 121 122 public: 123 explicit DAGTypeLegalizer(SelectionDAG &dag) 124 : TLI(dag.getTargetLoweringInfo()), DAG(dag), 125 ValueTypeActions(TLI.getValueTypeActions()) { 126 assert(MVT::LAST_VALUETYPE <= MVT::MAX_ALLOWED_VALUETYPE && 127 "Too many value types for ValueTypeActions to hold!"); 128 } 129 130 /// run - This is the main entry point for the type legalizer. This does a 131 /// top-down traversal of the dag, legalizing types as it goes. Returns 132 /// "true" if it made any changes. 133 bool run(); 134 135 void NoteDeletion(SDNode *Old, SDNode *New) { 136 ExpungeNode(Old); 137 ExpungeNode(New); 138 for (unsigned i = 0, e = Old->getNumValues(); i != e; ++i) 139 ReplacedValues[SDValue(Old, i)] = SDValue(New, i); 140 } 141 142 SelectionDAG &getDAG() const { return DAG; } 143 144 private: 145 SDNode *AnalyzeNewNode(SDNode *N); 146 void AnalyzeNewValue(SDValue &Val); 147 void ExpungeNode(SDNode *N); 148 void PerformExpensiveChecks(); 149 void RemapValue(SDValue &N); 150 151 // Common routines. 152 SDValue BitConvertToInteger(SDValue Op); 153 SDValue BitConvertVectorToIntegerVector(SDValue Op); 154 SDValue CreateStackStoreLoad(SDValue Op, EVT DestVT); 155 bool CustomLowerNode(SDNode *N, EVT VT, bool LegalizeResult); 156 bool CustomWidenLowerNode(SDNode *N, EVT VT); 157 158 /// DisintegrateMERGE_VALUES - Replace each result of the given MERGE_VALUES 159 /// node with the corresponding input operand, except for the result 'ResNo', 160 /// for which the corresponding input operand is returned. 161 SDValue DisintegrateMERGE_VALUES(SDNode *N, unsigned ResNo); 162 163 SDValue GetVectorElementPointer(SDValue VecPtr, EVT EltVT, SDValue Index); 164 SDValue JoinIntegers(SDValue Lo, SDValue Hi); 165 SDValue LibCallify(RTLIB::Libcall LC, SDNode *N, bool isSigned); 166 167 std::pair<SDValue, SDValue> ExpandChainLibCall(RTLIB::Libcall LC, 168 SDNode *Node, bool isSigned); 169 std::pair<SDValue, SDValue> ExpandAtomic(SDNode *Node); 170 171 SDValue PromoteTargetBoolean(SDValue Bool, EVT VT); 172 void ReplaceValueWith(SDValue From, SDValue To); 173 void SplitInteger(SDValue Op, SDValue &Lo, SDValue &Hi); 174 void SplitInteger(SDValue Op, EVT LoVT, EVT HiVT, 175 SDValue &Lo, SDValue &Hi); 176 177 //===--------------------------------------------------------------------===// 178 // Integer Promotion Support: LegalizeIntegerTypes.cpp 179 //===--------------------------------------------------------------------===// 180 181 /// GetPromotedInteger - Given a processed operand Op which was promoted to a 182 /// larger integer type, this returns the promoted value. The low bits of the 183 /// promoted value corresponding to the original type are exactly equal to Op. 184 /// The extra bits contain rubbish, so the promoted value may need to be zero- 185 /// or sign-extended from the original type before it is usable (the helpers 186 /// SExtPromotedInteger and ZExtPromotedInteger can do this for you). 187 /// For example, if Op is an i16 and was promoted to an i32, then this method 188 /// returns an i32, the lower 16 bits of which coincide with Op, and the upper 189 /// 16 bits of which contain rubbish. 190 SDValue GetPromotedInteger(SDValue Op) { 191 SDValue &PromotedOp = PromotedIntegers[Op]; 192 RemapValue(PromotedOp); 193 assert(PromotedOp.getNode() && "Operand wasn't promoted?"); 194 return PromotedOp; 195 } 196 void SetPromotedInteger(SDValue Op, SDValue Result); 197 198 /// SExtPromotedInteger - Get a promoted operand and sign extend it to the 199 /// final size. 200 SDValue SExtPromotedInteger(SDValue Op) { 201 EVT OldVT = Op.getValueType(); 202 SDLoc dl(Op); 203 Op = GetPromotedInteger(Op); 204 return DAG.getNode(ISD::SIGN_EXTEND_INREG, dl, Op.getValueType(), Op, 205 DAG.getValueType(OldVT)); 206 } 207 208 /// ZExtPromotedInteger - Get a promoted operand and zero extend it to the 209 /// final size. 210 SDValue ZExtPromotedInteger(SDValue Op) { 211 EVT OldVT = Op.getValueType(); 212 SDLoc dl(Op); 213 Op = GetPromotedInteger(Op); 214 return DAG.getZeroExtendInReg(Op, dl, OldVT.getScalarType()); 215 } 216 217 // Integer Result Promotion. 218 void PromoteIntegerResult(SDNode *N, unsigned ResNo); 219 SDValue PromoteIntRes_MERGE_VALUES(SDNode *N, unsigned ResNo); 220 SDValue PromoteIntRes_AssertSext(SDNode *N); 221 SDValue PromoteIntRes_AssertZext(SDNode *N); 222 SDValue PromoteIntRes_Atomic0(AtomicSDNode *N); 223 SDValue PromoteIntRes_Atomic1(AtomicSDNode *N); 224 SDValue PromoteIntRes_Atomic2(AtomicSDNode *N); 225 SDValue PromoteIntRes_EXTRACT_SUBVECTOR(SDNode *N); 226 SDValue PromoteIntRes_VECTOR_SHUFFLE(SDNode *N); 227 SDValue PromoteIntRes_BUILD_VECTOR(SDNode *N); 228 SDValue PromoteIntRes_SCALAR_TO_VECTOR(SDNode *N); 229 SDValue PromoteIntRes_INSERT_VECTOR_ELT(SDNode *N); 230 SDValue PromoteIntRes_CONCAT_VECTORS(SDNode *N); 231 SDValue PromoteIntRes_BITCAST(SDNode *N); 232 SDValue PromoteIntRes_BSWAP(SDNode *N); 233 SDValue PromoteIntRes_BUILD_PAIR(SDNode *N); 234 SDValue PromoteIntRes_Constant(SDNode *N); 235 SDValue PromoteIntRes_CONVERT_RNDSAT(SDNode *N); 236 SDValue PromoteIntRes_CTLZ(SDNode *N); 237 SDValue PromoteIntRes_CTPOP(SDNode *N); 238 SDValue PromoteIntRes_CTTZ(SDNode *N); 239 SDValue PromoteIntRes_EXTRACT_VECTOR_ELT(SDNode *N); 240 SDValue PromoteIntRes_FP_TO_XINT(SDNode *N); 241 SDValue PromoteIntRes_FP32_TO_FP16(SDNode *N); 242 SDValue PromoteIntRes_INT_EXTEND(SDNode *N); 243 SDValue PromoteIntRes_LOAD(LoadSDNode *N); 244 SDValue PromoteIntRes_Overflow(SDNode *N); 245 SDValue PromoteIntRes_SADDSUBO(SDNode *N, unsigned ResNo); 246 SDValue PromoteIntRes_SDIV(SDNode *N); 247 SDValue PromoteIntRes_SELECT(SDNode *N); 248 SDValue PromoteIntRes_VSELECT(SDNode *N); 249 SDValue PromoteIntRes_SELECT_CC(SDNode *N); 250 SDValue PromoteIntRes_SETCC(SDNode *N); 251 SDValue PromoteIntRes_SHL(SDNode *N); 252 SDValue PromoteIntRes_SimpleIntBinOp(SDNode *N); 253 SDValue PromoteIntRes_SIGN_EXTEND_INREG(SDNode *N); 254 SDValue PromoteIntRes_SRA(SDNode *N); 255 SDValue PromoteIntRes_SRL(SDNode *N); 256 SDValue PromoteIntRes_TRUNCATE(SDNode *N); 257 SDValue PromoteIntRes_UADDSUBO(SDNode *N, unsigned ResNo); 258 SDValue PromoteIntRes_UDIV(SDNode *N); 259 SDValue PromoteIntRes_UNDEF(SDNode *N); 260 SDValue PromoteIntRes_VAARG(SDNode *N); 261 SDValue PromoteIntRes_XMULO(SDNode *N, unsigned ResNo); 262 263 // Integer Operand Promotion. 264 bool PromoteIntegerOperand(SDNode *N, unsigned OperandNo); 265 SDValue PromoteIntOp_ANY_EXTEND(SDNode *N); 266 SDValue PromoteIntOp_ATOMIC_STORE(AtomicSDNode *N); 267 SDValue PromoteIntOp_BITCAST(SDNode *N); 268 SDValue PromoteIntOp_BUILD_PAIR(SDNode *N); 269 SDValue PromoteIntOp_BR_CC(SDNode *N, unsigned OpNo); 270 SDValue PromoteIntOp_BRCOND(SDNode *N, unsigned OpNo); 271 SDValue PromoteIntOp_BUILD_VECTOR(SDNode *N); 272 SDValue PromoteIntOp_CONVERT_RNDSAT(SDNode *N); 273 SDValue PromoteIntOp_INSERT_VECTOR_ELT(SDNode *N, unsigned OpNo); 274 SDValue PromoteIntOp_EXTRACT_ELEMENT(SDNode *N); 275 SDValue PromoteIntOp_EXTRACT_VECTOR_ELT(SDNode *N); 276 SDValue PromoteIntOp_CONCAT_VECTORS(SDNode *N); 277 SDValue PromoteIntOp_SCALAR_TO_VECTOR(SDNode *N); 278 SDValue PromoteIntOp_SELECT(SDNode *N, unsigned OpNo); 279 SDValue PromoteIntOp_SELECT_CC(SDNode *N, unsigned OpNo); 280 SDValue PromoteIntOp_SETCC(SDNode *N, unsigned OpNo); 281 SDValue PromoteIntOp_VSETCC(SDNode *N, unsigned OpNo); 282 SDValue PromoteIntOp_Shift(SDNode *N); 283 SDValue PromoteIntOp_SIGN_EXTEND(SDNode *N); 284 SDValue PromoteIntOp_SINT_TO_FP(SDNode *N); 285 SDValue PromoteIntOp_STORE(StoreSDNode *N, unsigned OpNo); 286 SDValue PromoteIntOp_TRUNCATE(SDNode *N); 287 SDValue PromoteIntOp_UINT_TO_FP(SDNode *N); 288 SDValue PromoteIntOp_ZERO_EXTEND(SDNode *N); 289 290 void PromoteSetCCOperands(SDValue &LHS,SDValue &RHS, ISD::CondCode Code); 291 292 //===--------------------------------------------------------------------===// 293 // Integer Expansion Support: LegalizeIntegerTypes.cpp 294 //===--------------------------------------------------------------------===// 295 296 /// GetExpandedInteger - Given a processed operand Op which was expanded into 297 /// two integers of half the size, this returns the two halves. The low bits 298 /// of Op are exactly equal to the bits of Lo; the high bits exactly equal Hi. 299 /// For example, if Op is an i64 which was expanded into two i32's, then this 300 /// method returns the two i32's, with Lo being equal to the lower 32 bits of 301 /// Op, and Hi being equal to the upper 32 bits. 302 void GetExpandedInteger(SDValue Op, SDValue &Lo, SDValue &Hi); 303 void SetExpandedInteger(SDValue Op, SDValue Lo, SDValue Hi); 304 305 // Integer Result Expansion. 306 void ExpandIntegerResult(SDNode *N, unsigned ResNo); 307 void ExpandIntRes_MERGE_VALUES (SDNode *N, unsigned ResNo, 308 SDValue &Lo, SDValue &Hi); 309 void ExpandIntRes_ANY_EXTEND (SDNode *N, SDValue &Lo, SDValue &Hi); 310 void ExpandIntRes_AssertSext (SDNode *N, SDValue &Lo, SDValue &Hi); 311 void ExpandIntRes_AssertZext (SDNode *N, SDValue &Lo, SDValue &Hi); 312 void ExpandIntRes_Constant (SDNode *N, SDValue &Lo, SDValue &Hi); 313 void ExpandIntRes_CTLZ (SDNode *N, SDValue &Lo, SDValue &Hi); 314 void ExpandIntRes_CTPOP (SDNode *N, SDValue &Lo, SDValue &Hi); 315 void ExpandIntRes_CTTZ (SDNode *N, SDValue &Lo, SDValue &Hi); 316 void ExpandIntRes_LOAD (LoadSDNode *N, SDValue &Lo, SDValue &Hi); 317 void ExpandIntRes_SIGN_EXTEND (SDNode *N, SDValue &Lo, SDValue &Hi); 318 void ExpandIntRes_SIGN_EXTEND_INREG (SDNode *N, SDValue &Lo, SDValue &Hi); 319 void ExpandIntRes_TRUNCATE (SDNode *N, SDValue &Lo, SDValue &Hi); 320 void ExpandIntRes_ZERO_EXTEND (SDNode *N, SDValue &Lo, SDValue &Hi); 321 void ExpandIntRes_FP_TO_SINT (SDNode *N, SDValue &Lo, SDValue &Hi); 322 void ExpandIntRes_FP_TO_UINT (SDNode *N, SDValue &Lo, SDValue &Hi); 323 324 void ExpandIntRes_Logical (SDNode *N, SDValue &Lo, SDValue &Hi); 325 void ExpandIntRes_ADDSUB (SDNode *N, SDValue &Lo, SDValue &Hi); 326 void ExpandIntRes_ADDSUBC (SDNode *N, SDValue &Lo, SDValue &Hi); 327 void ExpandIntRes_ADDSUBE (SDNode *N, SDValue &Lo, SDValue &Hi); 328 void ExpandIntRes_BSWAP (SDNode *N, SDValue &Lo, SDValue &Hi); 329 void ExpandIntRes_MUL (SDNode *N, SDValue &Lo, SDValue &Hi); 330 void ExpandIntRes_SDIV (SDNode *N, SDValue &Lo, SDValue &Hi); 331 void ExpandIntRes_SREM (SDNode *N, SDValue &Lo, SDValue &Hi); 332 void ExpandIntRes_UDIV (SDNode *N, SDValue &Lo, SDValue &Hi); 333 void ExpandIntRes_UREM (SDNode *N, SDValue &Lo, SDValue &Hi); 334 void ExpandIntRes_Shift (SDNode *N, SDValue &Lo, SDValue &Hi); 335 336 void ExpandIntRes_SADDSUBO (SDNode *N, SDValue &Lo, SDValue &Hi); 337 void ExpandIntRes_UADDSUBO (SDNode *N, SDValue &Lo, SDValue &Hi); 338 void ExpandIntRes_XMULO (SDNode *N, SDValue &Lo, SDValue &Hi); 339 340 void ExpandIntRes_ATOMIC_LOAD (SDNode *N, SDValue &Lo, SDValue &Hi); 341 342 void ExpandShiftByConstant(SDNode *N, unsigned Amt, 343 SDValue &Lo, SDValue &Hi); 344 bool ExpandShiftWithKnownAmountBit(SDNode *N, SDValue &Lo, SDValue &Hi); 345 bool ExpandShiftWithUnknownAmountBit(SDNode *N, SDValue &Lo, SDValue &Hi); 346 347 // Integer Operand Expansion. 348 bool ExpandIntegerOperand(SDNode *N, unsigned OperandNo); 349 SDValue ExpandIntOp_BITCAST(SDNode *N); 350 SDValue ExpandIntOp_BR_CC(SDNode *N); 351 SDValue ExpandIntOp_BUILD_VECTOR(SDNode *N); 352 SDValue ExpandIntOp_EXTRACT_ELEMENT(SDNode *N); 353 SDValue ExpandIntOp_SELECT_CC(SDNode *N); 354 SDValue ExpandIntOp_SETCC(SDNode *N); 355 SDValue ExpandIntOp_Shift(SDNode *N); 356 SDValue ExpandIntOp_SINT_TO_FP(SDNode *N); 357 SDValue ExpandIntOp_STORE(StoreSDNode *N, unsigned OpNo); 358 SDValue ExpandIntOp_TRUNCATE(SDNode *N); 359 SDValue ExpandIntOp_UINT_TO_FP(SDNode *N); 360 SDValue ExpandIntOp_RETURNADDR(SDNode *N); 361 SDValue ExpandIntOp_ATOMIC_STORE(SDNode *N); 362 363 void IntegerExpandSetCCOperands(SDValue &NewLHS, SDValue &NewRHS, 364 ISD::CondCode &CCCode, SDLoc dl); 365 366 //===--------------------------------------------------------------------===// 367 // Float to Integer Conversion Support: LegalizeFloatTypes.cpp 368 //===--------------------------------------------------------------------===// 369 370 /// GetSoftenedFloat - Given a processed operand Op which was converted to an 371 /// integer of the same size, this returns the integer. The integer contains 372 /// exactly the same bits as Op - only the type changed. For example, if Op 373 /// is an f32 which was softened to an i32, then this method returns an i32, 374 /// the bits of which coincide with those of Op. 375 SDValue GetSoftenedFloat(SDValue Op) { 376 SDValue &SoftenedOp = SoftenedFloats[Op]; 377 RemapValue(SoftenedOp); 378 assert(SoftenedOp.getNode() && "Operand wasn't converted to integer?"); 379 return SoftenedOp; 380 } 381 void SetSoftenedFloat(SDValue Op, SDValue Result); 382 383 // Result Float to Integer Conversion. 384 void SoftenFloatResult(SDNode *N, unsigned OpNo); 385 SDValue SoftenFloatRes_MERGE_VALUES(SDNode *N, unsigned ResNo); 386 SDValue SoftenFloatRes_BITCAST(SDNode *N); 387 SDValue SoftenFloatRes_BUILD_PAIR(SDNode *N); 388 SDValue SoftenFloatRes_ConstantFP(ConstantFPSDNode *N); 389 SDValue SoftenFloatRes_EXTRACT_VECTOR_ELT(SDNode *N); 390 SDValue SoftenFloatRes_FABS(SDNode *N); 391 SDValue SoftenFloatRes_FADD(SDNode *N); 392 SDValue SoftenFloatRes_FCEIL(SDNode *N); 393 SDValue SoftenFloatRes_FCOPYSIGN(SDNode *N); 394 SDValue SoftenFloatRes_FCOS(SDNode *N); 395 SDValue SoftenFloatRes_FDIV(SDNode *N); 396 SDValue SoftenFloatRes_FEXP(SDNode *N); 397 SDValue SoftenFloatRes_FEXP2(SDNode *N); 398 SDValue SoftenFloatRes_FFLOOR(SDNode *N); 399 SDValue SoftenFloatRes_FLOG(SDNode *N); 400 SDValue SoftenFloatRes_FLOG2(SDNode *N); 401 SDValue SoftenFloatRes_FLOG10(SDNode *N); 402 SDValue SoftenFloatRes_FMA(SDNode *N); 403 SDValue SoftenFloatRes_FMUL(SDNode *N); 404 SDValue SoftenFloatRes_FNEARBYINT(SDNode *N); 405 SDValue SoftenFloatRes_FNEG(SDNode *N); 406 SDValue SoftenFloatRes_FP_EXTEND(SDNode *N); 407 SDValue SoftenFloatRes_FP16_TO_FP32(SDNode *N); 408 SDValue SoftenFloatRes_FP_ROUND(SDNode *N); 409 SDValue SoftenFloatRes_FPOW(SDNode *N); 410 SDValue SoftenFloatRes_FPOWI(SDNode *N); 411 SDValue SoftenFloatRes_FREM(SDNode *N); 412 SDValue SoftenFloatRes_FRINT(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_FSIN (SDNode *N, SDValue &Lo, SDValue &Hi); 474 void ExpandFloatRes_FSQRT (SDNode *N, SDValue &Lo, SDValue &Hi); 475 void ExpandFloatRes_FSUB (SDNode *N, SDValue &Lo, SDValue &Hi); 476 void ExpandFloatRes_FTRUNC (SDNode *N, SDValue &Lo, SDValue &Hi); 477 void ExpandFloatRes_LOAD (SDNode *N, SDValue &Lo, SDValue &Hi); 478 void ExpandFloatRes_XINT_TO_FP(SDNode *N, SDValue &Lo, SDValue &Hi); 479 480 // Float Operand Expansion. 481 bool ExpandFloatOperand(SDNode *N, unsigned OperandNo); 482 SDValue ExpandFloatOp_BR_CC(SDNode *N); 483 SDValue ExpandFloatOp_FP_ROUND(SDNode *N); 484 SDValue ExpandFloatOp_FP_TO_SINT(SDNode *N); 485 SDValue ExpandFloatOp_FP_TO_UINT(SDNode *N); 486 SDValue ExpandFloatOp_SELECT_CC(SDNode *N); 487 SDValue ExpandFloatOp_SETCC(SDNode *N); 488 SDValue ExpandFloatOp_STORE(SDNode *N, unsigned OpNo); 489 490 void FloatExpandSetCCOperands(SDValue &NewLHS, SDValue &NewRHS, 491 ISD::CondCode &CCCode, SDLoc dl); 492 493 //===--------------------------------------------------------------------===// 494 // Scalarization Support: LegalizeVectorTypes.cpp 495 //===--------------------------------------------------------------------===// 496 497 /// GetScalarizedVector - Given a processed one-element vector Op which was 498 /// scalarized to its element type, this returns the element. For example, 499 /// if Op is a v1i32, Op = < i32 val >, this method returns val, an i32. 500 SDValue GetScalarizedVector(SDValue Op) { 501 SDValue &ScalarizedOp = ScalarizedVectors[Op]; 502 RemapValue(ScalarizedOp); 503 assert(ScalarizedOp.getNode() && "Operand wasn't scalarized?"); 504 return ScalarizedOp; 505 } 506 void SetScalarizedVector(SDValue Op, SDValue Result); 507 508 // Vector Result Scalarization: <1 x ty> -> ty. 509 void ScalarizeVectorResult(SDNode *N, unsigned OpNo); 510 SDValue ScalarizeVecRes_MERGE_VALUES(SDNode *N, unsigned ResNo); 511 SDValue ScalarizeVecRes_BinOp(SDNode *N); 512 SDValue ScalarizeVecRes_TernaryOp(SDNode *N); 513 SDValue ScalarizeVecRes_UnaryOp(SDNode *N); 514 SDValue ScalarizeVecRes_InregOp(SDNode *N); 515 516 SDValue ScalarizeVecRes_BITCAST(SDNode *N); 517 SDValue ScalarizeVecRes_BUILD_VECTOR(SDNode *N); 518 SDValue ScalarizeVecRes_CONVERT_RNDSAT(SDNode *N); 519 SDValue ScalarizeVecRes_EXTRACT_SUBVECTOR(SDNode *N); 520 SDValue ScalarizeVecRes_FP_ROUND(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_VSELECT(SDNode *N); 527 SDValue ScalarizeVecRes_SELECT(SDNode *N); 528 SDValue ScalarizeVecRes_SELECT_CC(SDNode *N); 529 SDValue ScalarizeVecRes_SETCC(SDNode *N); 530 SDValue ScalarizeVecRes_UNDEF(SDNode *N); 531 SDValue ScalarizeVecRes_VECTOR_SHUFFLE(SDNode *N); 532 SDValue ScalarizeVecRes_VSETCC(SDNode *N); 533 534 // Vector Operand Scalarization: <1 x ty> -> ty. 535 bool ScalarizeVectorOperand(SDNode *N, unsigned OpNo); 536 SDValue ScalarizeVecOp_BITCAST(SDNode *N); 537 SDValue ScalarizeVecOp_EXTEND(SDNode *N); 538 SDValue ScalarizeVecOp_CONCAT_VECTORS(SDNode *N); 539 SDValue ScalarizeVecOp_EXTRACT_VECTOR_ELT(SDNode *N); 540 SDValue ScalarizeVecOp_STORE(StoreSDNode *N, unsigned OpNo); 541 542 //===--------------------------------------------------------------------===// 543 // Vector Splitting Support: LegalizeVectorTypes.cpp 544 //===--------------------------------------------------------------------===// 545 546 /// GetSplitVector - Given a processed vector Op which was split into vectors 547 /// of half the size, this method returns the halves. The first elements of 548 /// Op coincide with the elements of Lo; the remaining elements of Op coincide 549 /// with the elements of Hi: Op is what you would get by concatenating Lo and 550 /// Hi. For example, if Op is a v8i32 that was split into two v4i32's, then 551 /// this method returns the two v4i32's, with Lo corresponding to the first 4 552 /// elements of Op, and Hi to the last 4 elements. 553 void GetSplitVector(SDValue Op, SDValue &Lo, SDValue &Hi); 554 void SetSplitVector(SDValue Op, SDValue Lo, SDValue Hi); 555 556 // Vector Result Splitting: <128 x ty> -> 2 x <64 x ty>. 557 void SplitVectorResult(SDNode *N, unsigned OpNo); 558 void SplitVecRes_BinOp(SDNode *N, SDValue &Lo, SDValue &Hi); 559 void SplitVecRes_TernaryOp(SDNode *N, SDValue &Lo, SDValue &Hi); 560 void SplitVecRes_UnaryOp(SDNode *N, SDValue &Lo, SDValue &Hi); 561 void SplitVecRes_InregOp(SDNode *N, SDValue &Lo, SDValue &Hi); 562 563 void SplitVecRes_BITCAST(SDNode *N, SDValue &Lo, SDValue &Hi); 564 void SplitVecRes_BUILD_PAIR(SDNode *N, SDValue &Lo, SDValue &Hi); 565 void SplitVecRes_BUILD_VECTOR(SDNode *N, SDValue &Lo, SDValue &Hi); 566 void SplitVecRes_CONCAT_VECTORS(SDNode *N, SDValue &Lo, SDValue &Hi); 567 void SplitVecRes_EXTRACT_SUBVECTOR(SDNode *N, SDValue &Lo, SDValue &Hi); 568 void SplitVecRes_FPOWI(SDNode *N, SDValue &Lo, SDValue &Hi); 569 void SplitVecRes_INSERT_VECTOR_ELT(SDNode *N, SDValue &Lo, SDValue &Hi); 570 void SplitVecRes_LOAD(LoadSDNode *N, SDValue &Lo, SDValue &Hi); 571 void SplitVecRes_SCALAR_TO_VECTOR(SDNode *N, SDValue &Lo, SDValue &Hi); 572 void SplitVecRes_SIGN_EXTEND_INREG(SDNode *N, SDValue &Lo, SDValue &Hi); 573 void SplitVecRes_SETCC(SDNode *N, SDValue &Lo, SDValue &Hi); 574 void SplitVecRes_UNDEF(SDNode *N, SDValue &Lo, SDValue &Hi); 575 void SplitVecRes_VECTOR_SHUFFLE(ShuffleVectorSDNode *N, SDValue &Lo, 576 SDValue &Hi); 577 578 // Vector Operand Splitting: <128 x ty> -> 2 x <64 x ty>. 579 bool SplitVectorOperand(SDNode *N, unsigned OpNo); 580 SDValue SplitVecOp_VSELECT(SDNode *N, unsigned OpNo); 581 SDValue SplitVecOp_UnaryOp(SDNode *N); 582 583 SDValue SplitVecOp_BITCAST(SDNode *N); 584 SDValue SplitVecOp_EXTRACT_SUBVECTOR(SDNode *N); 585 SDValue SplitVecOp_EXTRACT_VECTOR_ELT(SDNode *N); 586 SDValue SplitVecOp_STORE(StoreSDNode *N, unsigned OpNo); 587 SDValue SplitVecOp_CONCAT_VECTORS(SDNode *N); 588 SDValue SplitVecOp_TRUNCATE(SDNode *N); 589 SDValue SplitVecOp_VSETCC(SDNode *N); 590 SDValue SplitVecOp_FP_ROUND(SDNode *N); 591 592 //===--------------------------------------------------------------------===// 593 // Vector Widening Support: LegalizeVectorTypes.cpp 594 //===--------------------------------------------------------------------===// 595 596 /// GetWidenedVector - Given a processed vector Op which was widened into a 597 /// larger vector, this method returns the larger vector. The elements of 598 /// the returned vector consist of the elements of Op followed by elements 599 /// containing rubbish. For example, if Op is a v2i32 that was widened to a 600 /// v4i32, then this method returns a v4i32 for which the first two elements 601 /// are the same as those of Op, while the last two elements contain rubbish. 602 SDValue GetWidenedVector(SDValue Op) { 603 SDValue &WidenedOp = WidenedVectors[Op]; 604 RemapValue(WidenedOp); 605 assert(WidenedOp.getNode() && "Operand wasn't widened?"); 606 return WidenedOp; 607 } 608 void SetWidenedVector(SDValue Op, SDValue Result); 609 610 // Widen Vector Result Promotion. 611 void WidenVectorResult(SDNode *N, unsigned ResNo); 612 SDValue WidenVecRes_MERGE_VALUES(SDNode* N, unsigned ResNo); 613 SDValue WidenVecRes_BITCAST(SDNode* N); 614 SDValue WidenVecRes_BUILD_VECTOR(SDNode* N); 615 SDValue WidenVecRes_CONCAT_VECTORS(SDNode* N); 616 SDValue WidenVecRes_CONVERT_RNDSAT(SDNode* N); 617 SDValue WidenVecRes_EXTRACT_SUBVECTOR(SDNode* N); 618 SDValue WidenVecRes_INSERT_VECTOR_ELT(SDNode* N); 619 SDValue WidenVecRes_LOAD(SDNode* N); 620 SDValue WidenVecRes_SCALAR_TO_VECTOR(SDNode* N); 621 SDValue WidenVecRes_SIGN_EXTEND_INREG(SDNode* N); 622 SDValue WidenVecRes_SELECT(SDNode* N); 623 SDValue WidenVecRes_SELECT_CC(SDNode* N); 624 SDValue WidenVecRes_SETCC(SDNode* N); 625 SDValue WidenVecRes_UNDEF(SDNode *N); 626 SDValue WidenVecRes_VECTOR_SHUFFLE(ShuffleVectorSDNode *N); 627 SDValue WidenVecRes_VSETCC(SDNode* N); 628 629 SDValue WidenVecRes_Ternary(SDNode *N); 630 SDValue WidenVecRes_Binary(SDNode *N); 631 SDValue WidenVecRes_Convert(SDNode *N); 632 SDValue WidenVecRes_POWI(SDNode *N); 633 SDValue WidenVecRes_Shift(SDNode *N); 634 SDValue WidenVecRes_Unary(SDNode *N); 635 SDValue WidenVecRes_InregOp(SDNode *N); 636 637 // Widen Vector Operand. 638 bool WidenVectorOperand(SDNode *N, unsigned OpNo); 639 SDValue WidenVecOp_BITCAST(SDNode *N); 640 SDValue WidenVecOp_CONCAT_VECTORS(SDNode *N); 641 SDValue WidenVecOp_EXTRACT_VECTOR_ELT(SDNode *N); 642 SDValue WidenVecOp_EXTRACT_SUBVECTOR(SDNode *N); 643 SDValue WidenVecOp_STORE(SDNode* N); 644 SDValue WidenVecOp_SETCC(SDNode* N); 645 646 SDValue WidenVecOp_Convert(SDNode *N); 647 648 //===--------------------------------------------------------------------===// 649 // Vector Widening Utilities Support: LegalizeVectorTypes.cpp 650 //===--------------------------------------------------------------------===// 651 652 /// Helper GenWidenVectorLoads - Helper function to generate a set of 653 /// loads to load a vector with a resulting wider type. It takes 654 /// LdChain: list of chains for the load to be generated. 655 /// Ld: load to widen 656 SDValue GenWidenVectorLoads(SmallVectorImpl<SDValue> &LdChain, 657 LoadSDNode *LD); 658 659 /// GenWidenVectorExtLoads - Helper function to generate a set of extension 660 /// loads to load a ector with a resulting wider type. It takes 661 /// LdChain: list of chains for the load to be generated. 662 /// Ld: load to widen 663 /// ExtType: extension element type 664 SDValue GenWidenVectorExtLoads(SmallVectorImpl<SDValue> &LdChain, 665 LoadSDNode *LD, ISD::LoadExtType ExtType); 666 667 /// Helper genWidenVectorStores - Helper function to generate a set of 668 /// stores to store a widen vector into non widen memory 669 /// StChain: list of chains for the stores we have generated 670 /// ST: store of a widen value 671 void GenWidenVectorStores(SmallVectorImpl<SDValue> &StChain, StoreSDNode *ST); 672 673 /// Helper genWidenVectorTruncStores - Helper function to generate a set of 674 /// stores to store a truncate widen vector into non widen memory 675 /// StChain: list of chains for the stores we have generated 676 /// ST: store of a widen value 677 void GenWidenVectorTruncStores(SmallVectorImpl<SDValue> &StChain, 678 StoreSDNode *ST); 679 680 /// Modifies a vector input (widen or narrows) to a vector of NVT. The 681 /// input vector must have the same element type as NVT. 682 SDValue ModifyToType(SDValue InOp, EVT WidenVT); 683 684 685 //===--------------------------------------------------------------------===// 686 // Generic Splitting: LegalizeTypesGeneric.cpp 687 //===--------------------------------------------------------------------===// 688 689 // Legalization methods which only use that the illegal type is split into two 690 // not necessarily identical types. As such they can be used for splitting 691 // vectors and expanding integers and floats. 692 693 void GetSplitOp(SDValue Op, SDValue &Lo, SDValue &Hi) { 694 if (Op.getValueType().isVector()) 695 GetSplitVector(Op, Lo, Hi); 696 else if (Op.getValueType().isInteger()) 697 GetExpandedInteger(Op, Lo, Hi); 698 else 699 GetExpandedFloat(Op, Lo, Hi); 700 } 701 702 /// GetSplitDestVTs - Compute the VTs needed for the low/hi parts of a type 703 /// which is split (or expanded) into two not necessarily identical pieces. 704 void GetSplitDestVTs(EVT InVT, EVT &LoVT, EVT &HiVT); 705 706 /// GetPairElements - Use ISD::EXTRACT_ELEMENT nodes to extract the low and 707 /// high parts of the given value. 708 void GetPairElements(SDValue Pair, SDValue &Lo, SDValue &Hi); 709 710 // Generic Result Splitting. 711 void SplitRes_MERGE_VALUES(SDNode *N, unsigned ResNo, 712 SDValue &Lo, SDValue &Hi); 713 void SplitRes_SELECT (SDNode *N, SDValue &Lo, SDValue &Hi); 714 void SplitRes_SELECT_CC (SDNode *N, SDValue &Lo, SDValue &Hi); 715 void SplitRes_UNDEF (SDNode *N, SDValue &Lo, SDValue &Hi); 716 717 //===--------------------------------------------------------------------===// 718 // Generic Expansion: LegalizeTypesGeneric.cpp 719 //===--------------------------------------------------------------------===// 720 721 // Legalization methods which only use that the illegal type is split into two 722 // identical types of half the size, and that the Lo/Hi part is stored first 723 // in memory on little/big-endian machines, followed by the Hi/Lo part. As 724 // such they can be used for expanding integers and floats. 725 726 void GetExpandedOp(SDValue Op, SDValue &Lo, SDValue &Hi) { 727 if (Op.getValueType().isInteger()) 728 GetExpandedInteger(Op, Lo, Hi); 729 else 730 GetExpandedFloat(Op, Lo, Hi); 731 } 732 733 // Generic Result Expansion. 734 void ExpandRes_MERGE_VALUES (SDNode *N, unsigned ResNo, 735 SDValue &Lo, SDValue &Hi); 736 void ExpandRes_BITCAST (SDNode *N, SDValue &Lo, SDValue &Hi); 737 void ExpandRes_BUILD_PAIR (SDNode *N, SDValue &Lo, SDValue &Hi); 738 void ExpandRes_EXTRACT_ELEMENT (SDNode *N, SDValue &Lo, SDValue &Hi); 739 void ExpandRes_EXTRACT_VECTOR_ELT(SDNode *N, SDValue &Lo, SDValue &Hi); 740 void ExpandRes_NormalLoad (SDNode *N, SDValue &Lo, SDValue &Hi); 741 void ExpandRes_VAARG (SDNode *N, SDValue &Lo, SDValue &Hi); 742 743 // Generic Operand Expansion. 744 SDValue ExpandOp_BITCAST (SDNode *N); 745 SDValue ExpandOp_BUILD_VECTOR (SDNode *N); 746 SDValue ExpandOp_EXTRACT_ELEMENT (SDNode *N); 747 SDValue ExpandOp_INSERT_VECTOR_ELT(SDNode *N); 748 SDValue ExpandOp_SCALAR_TO_VECTOR (SDNode *N); 749 SDValue ExpandOp_NormalStore (SDNode *N, unsigned OpNo); 750 }; 751 752 } // end namespace llvm. 753 754 #endif 755
