LegalizeTypes.h revision fa963a885c074b3b0d6cc2466036297c476f7103
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/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 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 SmallDenseMap<SDValue, SDValue, 8> 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 SmallDenseMap<SDValue, std::pair<SDValue, SDValue>, 8> 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 SmallDenseMap<SDValue, SDValue, 8> 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 SmallDenseMap<SDValue, std::pair<SDValue, SDValue>, 8> ExpandedFloats; 96 97 /// ScalarizedVectors - For nodes that are <1 x ty>, this map indicates the 98 /// scalar value of type 'ty' to use. 99 SmallDenseMap<SDValue, SDValue, 8> 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 SmallDenseMap<SDValue, std::pair<SDValue, SDValue>, 8> SplitVectors; 104 105 /// WidenedVectors - For vector nodes that need to be widened, indicates 106 /// the widened value to use. 107 SmallDenseMap<SDValue, SDValue, 8> WidenedVectors; 108 109 /// ReplacedValues - For values that have been replaced with another, 110 /// indicates the replacement value to use. 111 SmallDenseMap<SDValue, SDValue, 8> 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 } 137 138 SelectionDAG &getDAG() const { return DAG; } 139 140private: 141 SDNode *AnalyzeNewNode(SDNode *N); 142 void AnalyzeNewValue(SDValue &Val); 143 void ExpungeNode(SDNode *N); 144 void PerformExpensiveChecks(); 145 void RemapValue(SDValue &N); 146 147 // Common routines. 148 SDValue BitConvertToInteger(SDValue Op); 149 SDValue BitConvertVectorToIntegerVector(SDValue Op); 150 SDValue CreateStackStoreLoad(SDValue Op, EVT DestVT); 151 bool CustomLowerNode(SDNode *N, EVT VT, bool LegalizeResult); 152 bool CustomWidenLowerNode(SDNode *N, EVT VT); 153 154 /// DisintegrateMERGE_VALUES - Replace each result of the given MERGE_VALUES 155 /// node with the corresponding input operand, except for the result 'ResNo', 156 /// for which the corresponding input operand is returned. 157 SDValue DisintegrateMERGE_VALUES(SDNode *N, unsigned ResNo); 158 159 SDValue GetVectorElementPointer(SDValue VecPtr, EVT EltVT, SDValue Index); 160 SDValue JoinIntegers(SDValue Lo, SDValue Hi); 161 SDValue LibCallify(RTLIB::Libcall LC, SDNode *N, bool isSigned); 162 163 std::pair<SDValue, SDValue> ExpandChainLibCall(RTLIB::Libcall LC, 164 SDNode *Node, bool isSigned); 165 std::pair<SDValue, SDValue> ExpandAtomic(SDNode *Node); 166 167 SDValue PromoteTargetBoolean(SDValue Bool, EVT VT); 168 void ReplaceValueWith(SDValue From, SDValue To); 169 void SplitInteger(SDValue Op, SDValue &Lo, SDValue &Hi); 170 void SplitInteger(SDValue Op, EVT LoVT, EVT HiVT, 171 SDValue &Lo, SDValue &Hi); 172 173 //===--------------------------------------------------------------------===// 174 // Integer Promotion Support: LegalizeIntegerTypes.cpp 175 //===--------------------------------------------------------------------===// 176 177 /// GetPromotedInteger - Given a processed operand Op which was promoted to a 178 /// larger integer type, this returns the promoted value. The low bits of the 179 /// promoted value corresponding to the original type are exactly equal to Op. 180 /// The extra bits contain rubbish, so the promoted value may need to be zero- 181 /// or sign-extended from the original type before it is usable (the helpers 182 /// SExtPromotedInteger and ZExtPromotedInteger can do this for you). 183 /// For example, if Op is an i16 and was promoted to an i32, then this method 184 /// returns an i32, the lower 16 bits of which coincide with Op, and the upper 185 /// 16 bits of which contain rubbish. 186 SDValue GetPromotedInteger(SDValue Op) { 187 SDValue &PromotedOp = PromotedIntegers[Op]; 188 RemapValue(PromotedOp); 189 assert(PromotedOp.getNode() && "Operand wasn't promoted?"); 190 return PromotedOp; 191 } 192 void SetPromotedInteger(SDValue Op, SDValue Result); 193 194 /// SExtPromotedInteger - Get a promoted operand and sign extend it to the 195 /// final size. 196 SDValue SExtPromotedInteger(SDValue Op) { 197 EVT OldVT = Op.getValueType(); 198 DebugLoc dl = Op.getDebugLoc(); 199 Op = GetPromotedInteger(Op); 200 return DAG.getNode(ISD::SIGN_EXTEND_INREG, dl, Op.getValueType(), Op, 201 DAG.getValueType(OldVT)); 202 } 203 204 /// ZExtPromotedInteger - Get a promoted operand and zero extend it to the 205 /// final size. 206 SDValue ZExtPromotedInteger(SDValue Op) { 207 EVT OldVT = Op.getValueType(); 208 DebugLoc dl = Op.getDebugLoc(); 209 Op = GetPromotedInteger(Op); 210 return DAG.getZeroExtendInReg(Op, dl, OldVT.getScalarType()); 211 } 212 213 // Integer Result Promotion. 214 void PromoteIntegerResult(SDNode *N, unsigned ResNo); 215 SDValue PromoteIntRes_MERGE_VALUES(SDNode *N, unsigned ResNo); 216 SDValue PromoteIntRes_AssertSext(SDNode *N); 217 SDValue PromoteIntRes_AssertZext(SDNode *N); 218 SDValue PromoteIntRes_Atomic0(AtomicSDNode *N); 219 SDValue PromoteIntRes_Atomic1(AtomicSDNode *N); 220 SDValue PromoteIntRes_Atomic2(AtomicSDNode *N); 221 SDValue PromoteIntRes_EXTRACT_SUBVECTOR(SDNode *N); 222 SDValue PromoteIntRes_VECTOR_SHUFFLE(SDNode *N); 223 SDValue PromoteIntRes_BUILD_VECTOR(SDNode *N); 224 SDValue PromoteIntRes_SCALAR_TO_VECTOR(SDNode *N); 225 SDValue PromoteIntRes_INSERT_VECTOR_ELT(SDNode *N); 226 SDValue PromoteIntRes_CONCAT_VECTORS(SDNode *N); 227 SDValue PromoteIntRes_BITCAST(SDNode *N); 228 SDValue PromoteIntRes_BSWAP(SDNode *N); 229 SDValue PromoteIntRes_BUILD_PAIR(SDNode *N); 230 SDValue PromoteIntRes_Constant(SDNode *N); 231 SDValue PromoteIntRes_CONVERT_RNDSAT(SDNode *N); 232 SDValue PromoteIntRes_CTLZ(SDNode *N); 233 SDValue PromoteIntRes_CTPOP(SDNode *N); 234 SDValue PromoteIntRes_CTTZ(SDNode *N); 235 SDValue PromoteIntRes_EXTRACT_VECTOR_ELT(SDNode *N); 236 SDValue PromoteIntRes_FP_TO_XINT(SDNode *N); 237 SDValue PromoteIntRes_FP32_TO_FP16(SDNode *N); 238 SDValue PromoteIntRes_INT_EXTEND(SDNode *N); 239 SDValue PromoteIntRes_LOAD(LoadSDNode *N); 240 SDValue PromoteIntRes_Overflow(SDNode *N); 241 SDValue PromoteIntRes_SADDSUBO(SDNode *N, unsigned ResNo); 242 SDValue PromoteIntRes_SDIV(SDNode *N); 243 SDValue PromoteIntRes_SELECT(SDNode *N); 244 SDValue PromoteIntRes_VSELECT(SDNode *N); 245 SDValue PromoteIntRes_SELECT_CC(SDNode *N); 246 SDValue PromoteIntRes_SETCC(SDNode *N); 247 SDValue PromoteIntRes_SHL(SDNode *N); 248 SDValue PromoteIntRes_SimpleIntBinOp(SDNode *N); 249 SDValue PromoteIntRes_SIGN_EXTEND_INREG(SDNode *N); 250 SDValue PromoteIntRes_SRA(SDNode *N); 251 SDValue PromoteIntRes_SRL(SDNode *N); 252 SDValue PromoteIntRes_TRUNCATE(SDNode *N); 253 SDValue PromoteIntRes_UADDSUBO(SDNode *N, unsigned ResNo); 254 SDValue PromoteIntRes_UDIV(SDNode *N); 255 SDValue PromoteIntRes_UNDEF(SDNode *N); 256 SDValue PromoteIntRes_VAARG(SDNode *N); 257 SDValue PromoteIntRes_XMULO(SDNode *N, unsigned ResNo); 258 259 // Integer Operand Promotion. 260 bool PromoteIntegerOperand(SDNode *N, unsigned OperandNo); 261 SDValue PromoteIntOp_ANY_EXTEND(SDNode *N); 262 SDValue PromoteIntOp_ATOMIC_STORE(AtomicSDNode *N); 263 SDValue PromoteIntOp_BITCAST(SDNode *N); 264 SDValue PromoteIntOp_BUILD_PAIR(SDNode *N); 265 SDValue PromoteIntOp_BR_CC(SDNode *N, unsigned OpNo); 266 SDValue PromoteIntOp_BRCOND(SDNode *N, unsigned OpNo); 267 SDValue PromoteIntOp_BUILD_VECTOR(SDNode *N); 268 SDValue PromoteIntOp_CONVERT_RNDSAT(SDNode *N); 269 SDValue PromoteIntOp_INSERT_VECTOR_ELT(SDNode *N, unsigned OpNo); 270 SDValue PromoteIntOp_EXTRACT_ELEMENT(SDNode *N); 271 SDValue PromoteIntOp_EXTRACT_VECTOR_ELT(SDNode *N); 272 SDValue PromoteIntOp_CONCAT_VECTORS(SDNode *N); 273 SDValue PromoteIntOp_MEMBARRIER(SDNode *N); 274 SDValue PromoteIntOp_SCALAR_TO_VECTOR(SDNode *N); 275 SDValue PromoteIntOp_SELECT(SDNode *N, unsigned OpNo); 276 SDValue PromoteIntOp_SELECT_CC(SDNode *N, unsigned OpNo); 277 SDValue PromoteIntOp_SETCC(SDNode *N, unsigned OpNo); 278 SDValue PromoteIntOp_VSETCC(SDNode *N, unsigned OpNo); 279 SDValue PromoteIntOp_Shift(SDNode *N); 280 SDValue PromoteIntOp_SIGN_EXTEND(SDNode *N); 281 SDValue PromoteIntOp_SINT_TO_FP(SDNode *N); 282 SDValue PromoteIntOp_STORE(StoreSDNode *N, unsigned OpNo); 283 SDValue PromoteIntOp_TRUNCATE(SDNode *N); 284 SDValue PromoteIntOp_UINT_TO_FP(SDNode *N); 285 SDValue PromoteIntOp_ZERO_EXTEND(SDNode *N); 286 287 void PromoteSetCCOperands(SDValue &LHS,SDValue &RHS, ISD::CondCode Code); 288 289 //===--------------------------------------------------------------------===// 290 // Integer Expansion Support: LegalizeIntegerTypes.cpp 291 //===--------------------------------------------------------------------===// 292 293 /// GetExpandedInteger - Given a processed operand Op which was expanded into 294 /// two integers of half the size, this returns the two halves. The low bits 295 /// of Op are exactly equal to the bits of Lo; the high bits exactly equal Hi. 296 /// For example, if Op is an i64 which was expanded into two i32's, then this 297 /// method returns the two i32's, with Lo being equal to the lower 32 bits of 298 /// Op, and Hi being equal to the upper 32 bits. 299 void GetExpandedInteger(SDValue Op, SDValue &Lo, SDValue &Hi); 300 void SetExpandedInteger(SDValue Op, SDValue Lo, SDValue Hi); 301 302 // Integer Result Expansion. 303 void ExpandIntegerResult(SDNode *N, unsigned ResNo); 304 void ExpandIntRes_MERGE_VALUES (SDNode *N, unsigned ResNo, 305 SDValue &Lo, SDValue &Hi); 306 void ExpandIntRes_ANY_EXTEND (SDNode *N, SDValue &Lo, SDValue &Hi); 307 void ExpandIntRes_AssertSext (SDNode *N, SDValue &Lo, SDValue &Hi); 308 void ExpandIntRes_AssertZext (SDNode *N, SDValue &Lo, SDValue &Hi); 309 void ExpandIntRes_Constant (SDNode *N, SDValue &Lo, SDValue &Hi); 310 void ExpandIntRes_CTLZ (SDNode *N, SDValue &Lo, SDValue &Hi); 311 void ExpandIntRes_CTPOP (SDNode *N, SDValue &Lo, SDValue &Hi); 312 void ExpandIntRes_CTTZ (SDNode *N, SDValue &Lo, SDValue &Hi); 313 void ExpandIntRes_LOAD (LoadSDNode *N, SDValue &Lo, SDValue &Hi); 314 void ExpandIntRes_SIGN_EXTEND (SDNode *N, SDValue &Lo, SDValue &Hi); 315 void ExpandIntRes_SIGN_EXTEND_INREG (SDNode *N, SDValue &Lo, SDValue &Hi); 316 void ExpandIntRes_TRUNCATE (SDNode *N, SDValue &Lo, SDValue &Hi); 317 void ExpandIntRes_ZERO_EXTEND (SDNode *N, SDValue &Lo, SDValue &Hi); 318 void ExpandIntRes_FP_TO_SINT (SDNode *N, SDValue &Lo, SDValue &Hi); 319 void ExpandIntRes_FP_TO_UINT (SDNode *N, SDValue &Lo, SDValue &Hi); 320 321 void ExpandIntRes_Logical (SDNode *N, SDValue &Lo, SDValue &Hi); 322 void ExpandIntRes_ADDSUB (SDNode *N, SDValue &Lo, SDValue &Hi); 323 void ExpandIntRes_ADDSUBC (SDNode *N, SDValue &Lo, SDValue &Hi); 324 void ExpandIntRes_ADDSUBE (SDNode *N, SDValue &Lo, SDValue &Hi); 325 void ExpandIntRes_BSWAP (SDNode *N, SDValue &Lo, SDValue &Hi); 326 void ExpandIntRes_MUL (SDNode *N, SDValue &Lo, SDValue &Hi); 327 void ExpandIntRes_SDIV (SDNode *N, SDValue &Lo, SDValue &Hi); 328 void ExpandIntRes_SREM (SDNode *N, SDValue &Lo, SDValue &Hi); 329 void ExpandIntRes_UDIV (SDNode *N, SDValue &Lo, SDValue &Hi); 330 void ExpandIntRes_UREM (SDNode *N, SDValue &Lo, SDValue &Hi); 331 void ExpandIntRes_Shift (SDNode *N, SDValue &Lo, SDValue &Hi); 332 333 void ExpandIntRes_SADDSUBO (SDNode *N, SDValue &Lo, SDValue &Hi); 334 void ExpandIntRes_UADDSUBO (SDNode *N, SDValue &Lo, SDValue &Hi); 335 void ExpandIntRes_XMULO (SDNode *N, SDValue &Lo, SDValue &Hi); 336 337 void ExpandIntRes_ATOMIC_LOAD (SDNode *N, SDValue &Lo, SDValue &Hi); 338 339 void ExpandShiftByConstant(SDNode *N, unsigned Amt, 340 SDValue &Lo, SDValue &Hi); 341 bool ExpandShiftWithKnownAmountBit(SDNode *N, SDValue &Lo, SDValue &Hi); 342 bool ExpandShiftWithUnknownAmountBit(SDNode *N, SDValue &Lo, SDValue &Hi); 343 344 // Integer Operand Expansion. 345 bool ExpandIntegerOperand(SDNode *N, unsigned OperandNo); 346 SDValue ExpandIntOp_BITCAST(SDNode *N); 347 SDValue ExpandIntOp_BR_CC(SDNode *N); 348 SDValue ExpandIntOp_BUILD_VECTOR(SDNode *N); 349 SDValue ExpandIntOp_EXTRACT_ELEMENT(SDNode *N); 350 SDValue ExpandIntOp_SELECT_CC(SDNode *N); 351 SDValue ExpandIntOp_SETCC(SDNode *N); 352 SDValue ExpandIntOp_Shift(SDNode *N); 353 SDValue ExpandIntOp_SINT_TO_FP(SDNode *N); 354 SDValue ExpandIntOp_STORE(StoreSDNode *N, unsigned OpNo); 355 SDValue ExpandIntOp_TRUNCATE(SDNode *N); 356 SDValue ExpandIntOp_UINT_TO_FP(SDNode *N); 357 SDValue ExpandIntOp_RETURNADDR(SDNode *N); 358 SDValue ExpandIntOp_ATOMIC_STORE(SDNode *N); 359 360 void IntegerExpandSetCCOperands(SDValue &NewLHS, SDValue &NewRHS, 361 ISD::CondCode &CCCode, DebugLoc dl); 362 363 //===--------------------------------------------------------------------===// 364 // Float to Integer Conversion Support: LegalizeFloatTypes.cpp 365 //===--------------------------------------------------------------------===// 366 367 /// GetSoftenedFloat - Given a processed operand Op which was converted to an 368 /// integer of the same size, this returns the integer. The integer contains 369 /// exactly the same bits as Op - only the type changed. For example, if Op 370 /// is an f32 which was softened to an i32, then this method returns an i32, 371 /// the bits of which coincide with those of Op. 372 SDValue GetSoftenedFloat(SDValue Op) { 373 SDValue &SoftenedOp = SoftenedFloats[Op]; 374 RemapValue(SoftenedOp); 375 assert(SoftenedOp.getNode() && "Operand wasn't converted to integer?"); 376 return SoftenedOp; 377 } 378 void SetSoftenedFloat(SDValue Op, SDValue Result); 379 380 // Result Float to Integer Conversion. 381 void SoftenFloatResult(SDNode *N, unsigned OpNo); 382 SDValue SoftenFloatRes_MERGE_VALUES(SDNode *N, unsigned ResNo); 383 SDValue SoftenFloatRes_BITCAST(SDNode *N); 384 SDValue SoftenFloatRes_BUILD_PAIR(SDNode *N); 385 SDValue SoftenFloatRes_ConstantFP(ConstantFPSDNode *N); 386 SDValue SoftenFloatRes_EXTRACT_VECTOR_ELT(SDNode *N); 387 SDValue SoftenFloatRes_FABS(SDNode *N); 388 SDValue SoftenFloatRes_FADD(SDNode *N); 389 SDValue SoftenFloatRes_FCEIL(SDNode *N); 390 SDValue SoftenFloatRes_FCOPYSIGN(SDNode *N); 391 SDValue SoftenFloatRes_FCOS(SDNode *N); 392 SDValue SoftenFloatRes_FDIV(SDNode *N); 393 SDValue SoftenFloatRes_FEXP(SDNode *N); 394 SDValue SoftenFloatRes_FEXP2(SDNode *N); 395 SDValue SoftenFloatRes_FFLOOR(SDNode *N); 396 SDValue SoftenFloatRes_FLOG(SDNode *N); 397 SDValue SoftenFloatRes_FLOG2(SDNode *N); 398 SDValue SoftenFloatRes_FLOG10(SDNode *N); 399 SDValue SoftenFloatRes_FMA(SDNode *N); 400 SDValue SoftenFloatRes_FMUL(SDNode *N); 401 SDValue SoftenFloatRes_FNEARBYINT(SDNode *N); 402 SDValue SoftenFloatRes_FNEG(SDNode *N); 403 SDValue SoftenFloatRes_FP_EXTEND(SDNode *N); 404 SDValue SoftenFloatRes_FP16_TO_FP32(SDNode *N); 405 SDValue SoftenFloatRes_FP_ROUND(SDNode *N); 406 SDValue SoftenFloatRes_FPOW(SDNode *N); 407 SDValue SoftenFloatRes_FPOWI(SDNode *N); 408 SDValue SoftenFloatRes_FREM(SDNode *N); 409 SDValue SoftenFloatRes_FRINT(SDNode *N); 410 SDValue SoftenFloatRes_FSIN(SDNode *N); 411 SDValue SoftenFloatRes_FSQRT(SDNode *N); 412 SDValue SoftenFloatRes_FSUB(SDNode *N); 413 SDValue SoftenFloatRes_FTRUNC(SDNode *N); 414 SDValue SoftenFloatRes_LOAD(SDNode *N); 415 SDValue SoftenFloatRes_SELECT(SDNode *N); 416 SDValue SoftenFloatRes_SELECT_CC(SDNode *N); 417 SDValue SoftenFloatRes_UNDEF(SDNode *N); 418 SDValue SoftenFloatRes_VAARG(SDNode *N); 419 SDValue SoftenFloatRes_XINT_TO_FP(SDNode *N); 420 421 // Operand Float to Integer Conversion. 422 bool SoftenFloatOperand(SDNode *N, unsigned OpNo); 423 SDValue SoftenFloatOp_BITCAST(SDNode *N); 424 SDValue SoftenFloatOp_BR_CC(SDNode *N); 425 SDValue SoftenFloatOp_FP_ROUND(SDNode *N); 426 SDValue SoftenFloatOp_FP_TO_SINT(SDNode *N); 427 SDValue SoftenFloatOp_FP_TO_UINT(SDNode *N); 428 SDValue SoftenFloatOp_FP32_TO_FP16(SDNode *N); 429 SDValue SoftenFloatOp_SELECT_CC(SDNode *N); 430 SDValue SoftenFloatOp_SETCC(SDNode *N); 431 SDValue SoftenFloatOp_STORE(SDNode *N, unsigned OpNo); 432 433 //===--------------------------------------------------------------------===// 434 // Float Expansion Support: LegalizeFloatTypes.cpp 435 //===--------------------------------------------------------------------===// 436 437 /// GetExpandedFloat - Given a processed operand Op which was expanded into 438 /// two floating point values of half the size, this returns the two halves. 439 /// The low bits of Op are exactly equal to the bits of Lo; the high bits 440 /// exactly equal Hi. For example, if Op is a ppcf128 which was expanded 441 /// into two f64's, then this method returns the two f64's, with Lo being 442 /// equal to the lower 64 bits of Op, and Hi to the upper 64 bits. 443 void GetExpandedFloat(SDValue Op, SDValue &Lo, SDValue &Hi); 444 void SetExpandedFloat(SDValue Op, SDValue Lo, SDValue Hi); 445 446 // Float Result Expansion. 447 void ExpandFloatResult(SDNode *N, unsigned ResNo); 448 void ExpandFloatRes_ConstantFP(SDNode *N, SDValue &Lo, SDValue &Hi); 449 void ExpandFloatRes_FABS (SDNode *N, SDValue &Lo, SDValue &Hi); 450 void ExpandFloatRes_FADD (SDNode *N, SDValue &Lo, SDValue &Hi); 451 void ExpandFloatRes_FCEIL (SDNode *N, SDValue &Lo, SDValue &Hi); 452 void ExpandFloatRes_FCOPYSIGN (SDNode *N, SDValue &Lo, SDValue &Hi); 453 void ExpandFloatRes_FCOS (SDNode *N, SDValue &Lo, SDValue &Hi); 454 void ExpandFloatRes_FDIV (SDNode *N, SDValue &Lo, SDValue &Hi); 455 void ExpandFloatRes_FEXP (SDNode *N, SDValue &Lo, SDValue &Hi); 456 void ExpandFloatRes_FEXP2 (SDNode *N, SDValue &Lo, SDValue &Hi); 457 void ExpandFloatRes_FFLOOR (SDNode *N, SDValue &Lo, SDValue &Hi); 458 void ExpandFloatRes_FLOG (SDNode *N, SDValue &Lo, SDValue &Hi); 459 void ExpandFloatRes_FLOG2 (SDNode *N, SDValue &Lo, SDValue &Hi); 460 void ExpandFloatRes_FLOG10 (SDNode *N, SDValue &Lo, SDValue &Hi); 461 void ExpandFloatRes_FMA (SDNode *N, SDValue &Lo, SDValue &Hi); 462 void ExpandFloatRes_FMUL (SDNode *N, SDValue &Lo, SDValue &Hi); 463 void ExpandFloatRes_FNEARBYINT(SDNode *N, SDValue &Lo, SDValue &Hi); 464 void ExpandFloatRes_FNEG (SDNode *N, SDValue &Lo, SDValue &Hi); 465 void ExpandFloatRes_FP_EXTEND (SDNode *N, SDValue &Lo, SDValue &Hi); 466 void ExpandFloatRes_FPOW (SDNode *N, SDValue &Lo, SDValue &Hi); 467 void ExpandFloatRes_FPOWI (SDNode *N, SDValue &Lo, SDValue &Hi); 468 void ExpandFloatRes_FRINT (SDNode *N, SDValue &Lo, SDValue &Hi); 469 void ExpandFloatRes_FSIN (SDNode *N, SDValue &Lo, SDValue &Hi); 470 void ExpandFloatRes_FSQRT (SDNode *N, SDValue &Lo, SDValue &Hi); 471 void ExpandFloatRes_FSUB (SDNode *N, SDValue &Lo, SDValue &Hi); 472 void ExpandFloatRes_FTRUNC (SDNode *N, SDValue &Lo, SDValue &Hi); 473 void ExpandFloatRes_LOAD (SDNode *N, SDValue &Lo, SDValue &Hi); 474 void ExpandFloatRes_XINT_TO_FP(SDNode *N, SDValue &Lo, SDValue &Hi); 475 476 // Float Operand Expansion. 477 bool ExpandFloatOperand(SDNode *N, unsigned OperandNo); 478 SDValue ExpandFloatOp_BR_CC(SDNode *N); 479 SDValue ExpandFloatOp_FP_ROUND(SDNode *N); 480 SDValue ExpandFloatOp_FP_TO_SINT(SDNode *N); 481 SDValue ExpandFloatOp_FP_TO_UINT(SDNode *N); 482 SDValue ExpandFloatOp_SELECT_CC(SDNode *N); 483 SDValue ExpandFloatOp_SETCC(SDNode *N); 484 SDValue ExpandFloatOp_STORE(SDNode *N, unsigned OpNo); 485 486 void FloatExpandSetCCOperands(SDValue &NewLHS, SDValue &NewRHS, 487 ISD::CondCode &CCCode, DebugLoc dl); 488 489 //===--------------------------------------------------------------------===// 490 // Scalarization Support: LegalizeVectorTypes.cpp 491 //===--------------------------------------------------------------------===// 492 493 /// GetScalarizedVector - Given a processed one-element vector Op which was 494 /// scalarized to its element type, this returns the element. For example, 495 /// if Op is a v1i32, Op = < i32 val >, this method returns val, an i32. 496 SDValue GetScalarizedVector(SDValue Op) { 497 SDValue &ScalarizedOp = ScalarizedVectors[Op]; 498 RemapValue(ScalarizedOp); 499 assert(ScalarizedOp.getNode() && "Operand wasn't scalarized?"); 500 return ScalarizedOp; 501 } 502 void SetScalarizedVector(SDValue Op, SDValue Result); 503 504 // Vector Result Scalarization: <1 x ty> -> ty. 505 void ScalarizeVectorResult(SDNode *N, unsigned OpNo); 506 SDValue ScalarizeVecRes_MERGE_VALUES(SDNode *N, unsigned ResNo); 507 SDValue ScalarizeVecRes_BinOp(SDNode *N); 508 SDValue ScalarizeVecRes_TernaryOp(SDNode *N); 509 SDValue ScalarizeVecRes_UnaryOp(SDNode *N); 510 SDValue ScalarizeVecRes_InregOp(SDNode *N); 511 512 SDValue ScalarizeVecRes_BITCAST(SDNode *N); 513 SDValue ScalarizeVecRes_BUILD_VECTOR(SDNode *N); 514 SDValue ScalarizeVecRes_CONVERT_RNDSAT(SDNode *N); 515 SDValue ScalarizeVecRes_EXTRACT_SUBVECTOR(SDNode *N); 516 SDValue ScalarizeVecRes_FP_ROUND(SDNode *N); 517 SDValue ScalarizeVecRes_FPOWI(SDNode *N); 518 SDValue ScalarizeVecRes_INSERT_VECTOR_ELT(SDNode *N); 519 SDValue ScalarizeVecRes_LOAD(LoadSDNode *N); 520 SDValue ScalarizeVecRes_SCALAR_TO_VECTOR(SDNode *N); 521 SDValue ScalarizeVecRes_SIGN_EXTEND_INREG(SDNode *N); 522 SDValue ScalarizeVecRes_VSELECT(SDNode *N); 523 SDValue ScalarizeVecRes_SELECT(SDNode *N); 524 SDValue ScalarizeVecRes_SELECT_CC(SDNode *N); 525 SDValue ScalarizeVecRes_SETCC(SDNode *N); 526 SDValue ScalarizeVecRes_UNDEF(SDNode *N); 527 SDValue ScalarizeVecRes_VECTOR_SHUFFLE(SDNode *N); 528 SDValue ScalarizeVecRes_VSETCC(SDNode *N); 529 530 // Vector Operand Scalarization: <1 x ty> -> ty. 531 bool ScalarizeVectorOperand(SDNode *N, unsigned OpNo); 532 SDValue ScalarizeVecOp_BITCAST(SDNode *N); 533 SDValue ScalarizeVecOp_EXTEND(SDNode *N); 534 SDValue ScalarizeVecOp_CONCAT_VECTORS(SDNode *N); 535 SDValue ScalarizeVecOp_EXTRACT_VECTOR_ELT(SDNode *N); 536 SDValue ScalarizeVecOp_STORE(StoreSDNode *N, unsigned OpNo); 537 538 //===--------------------------------------------------------------------===// 539 // Vector Splitting Support: LegalizeVectorTypes.cpp 540 //===--------------------------------------------------------------------===// 541 542 /// GetSplitVector - Given a processed vector Op which was split into vectors 543 /// of half the size, this method returns the halves. The first elements of 544 /// Op coincide with the elements of Lo; the remaining elements of Op coincide 545 /// with the elements of Hi: Op is what you would get by concatenating Lo and 546 /// Hi. For example, if Op is a v8i32 that was split into two v4i32's, then 547 /// this method returns the two v4i32's, with Lo corresponding to the first 4 548 /// elements of Op, and Hi to the last 4 elements. 549 void GetSplitVector(SDValue Op, SDValue &Lo, SDValue &Hi); 550 void SetSplitVector(SDValue Op, SDValue Lo, SDValue Hi); 551 552 // Vector Result Splitting: <128 x ty> -> 2 x <64 x ty>. 553 void SplitVectorResult(SDNode *N, unsigned OpNo); 554 void SplitVecRes_BinOp(SDNode *N, SDValue &Lo, SDValue &Hi); 555 void SplitVecRes_TernaryOp(SDNode *N, SDValue &Lo, SDValue &Hi); 556 void SplitVecRes_UnaryOp(SDNode *N, SDValue &Lo, SDValue &Hi); 557 void SplitVecRes_InregOp(SDNode *N, SDValue &Lo, SDValue &Hi); 558 559 void SplitVecRes_BITCAST(SDNode *N, SDValue &Lo, SDValue &Hi); 560 void SplitVecRes_BUILD_PAIR(SDNode *N, SDValue &Lo, SDValue &Hi); 561 void SplitVecRes_BUILD_VECTOR(SDNode *N, SDValue &Lo, SDValue &Hi); 562 void SplitVecRes_CONCAT_VECTORS(SDNode *N, SDValue &Lo, SDValue &Hi); 563 void SplitVecRes_EXTRACT_SUBVECTOR(SDNode *N, SDValue &Lo, SDValue &Hi); 564 void SplitVecRes_FPOWI(SDNode *N, SDValue &Lo, SDValue &Hi); 565 void SplitVecRes_INSERT_VECTOR_ELT(SDNode *N, SDValue &Lo, SDValue &Hi); 566 void SplitVecRes_LOAD(LoadSDNode *N, SDValue &Lo, SDValue &Hi); 567 void SplitVecRes_SCALAR_TO_VECTOR(SDNode *N, SDValue &Lo, SDValue &Hi); 568 void SplitVecRes_SIGN_EXTEND_INREG(SDNode *N, SDValue &Lo, SDValue &Hi); 569 void SplitVecRes_SETCC(SDNode *N, SDValue &Lo, SDValue &Hi); 570 void SplitVecRes_UNDEF(SDNode *N, SDValue &Lo, SDValue &Hi); 571 void SplitVecRes_VECTOR_SHUFFLE(ShuffleVectorSDNode *N, SDValue &Lo, 572 SDValue &Hi); 573 574 // Vector Operand Splitting: <128 x ty> -> 2 x <64 x ty>. 575 bool SplitVectorOperand(SDNode *N, unsigned OpNo); 576 SDValue SplitVecOp_VSELECT(SDNode *N, unsigned OpNo); 577 SDValue SplitVecOp_UnaryOp(SDNode *N); 578 579 SDValue SplitVecOp_BITCAST(SDNode *N); 580 SDValue SplitVecOp_EXTRACT_SUBVECTOR(SDNode *N); 581 SDValue SplitVecOp_EXTRACT_VECTOR_ELT(SDNode *N); 582 SDValue SplitVecOp_STORE(StoreSDNode *N, unsigned OpNo); 583 SDValue SplitVecOp_CONCAT_VECTORS(SDNode *N); 584 SDValue SplitVecOp_VSETCC(SDNode *N); 585 SDValue SplitVecOp_FP_ROUND(SDNode *N); 586 587 //===--------------------------------------------------------------------===// 588 // Vector Widening Support: LegalizeVectorTypes.cpp 589 //===--------------------------------------------------------------------===// 590 591 /// GetWidenedVector - Given a processed vector Op which was widened into a 592 /// larger vector, this method returns the larger vector. The elements of 593 /// the returned vector consist of the elements of Op followed by elements 594 /// containing rubbish. For example, if Op is a v2i32 that was widened to a 595 /// v4i32, then this method returns a v4i32 for which the first two elements 596 /// are the same as those of Op, while the last two elements contain rubbish. 597 SDValue GetWidenedVector(SDValue Op) { 598 SDValue &WidenedOp = WidenedVectors[Op]; 599 RemapValue(WidenedOp); 600 assert(WidenedOp.getNode() && "Operand wasn't widened?"); 601 return WidenedOp; 602 } 603 void SetWidenedVector(SDValue Op, SDValue Result); 604 605 // Widen Vector Result Promotion. 606 void WidenVectorResult(SDNode *N, unsigned ResNo); 607 SDValue WidenVecRes_MERGE_VALUES(SDNode* N, unsigned ResNo); 608 SDValue WidenVecRes_BITCAST(SDNode* N); 609 SDValue WidenVecRes_BUILD_VECTOR(SDNode* N); 610 SDValue WidenVecRes_CONCAT_VECTORS(SDNode* N); 611 SDValue WidenVecRes_CONVERT_RNDSAT(SDNode* N); 612 SDValue WidenVecRes_EXTRACT_SUBVECTOR(SDNode* N); 613 SDValue WidenVecRes_INSERT_VECTOR_ELT(SDNode* N); 614 SDValue WidenVecRes_LOAD(SDNode* N); 615 SDValue WidenVecRes_SCALAR_TO_VECTOR(SDNode* N); 616 SDValue WidenVecRes_SIGN_EXTEND_INREG(SDNode* N); 617 SDValue WidenVecRes_SELECT(SDNode* N); 618 SDValue WidenVecRes_SELECT_CC(SDNode* N); 619 SDValue WidenVecRes_SETCC(SDNode* N); 620 SDValue WidenVecRes_UNDEF(SDNode *N); 621 SDValue WidenVecRes_VECTOR_SHUFFLE(ShuffleVectorSDNode *N); 622 SDValue WidenVecRes_VSETCC(SDNode* N); 623 624 SDValue WidenVecRes_Ternary(SDNode *N); 625 SDValue WidenVecRes_Binary(SDNode *N); 626 SDValue WidenVecRes_Convert(SDNode *N); 627 SDValue WidenVecRes_POWI(SDNode *N); 628 SDValue WidenVecRes_Shift(SDNode *N); 629 SDValue WidenVecRes_Unary(SDNode *N); 630 SDValue WidenVecRes_InregOp(SDNode *N); 631 632 // Widen Vector Operand. 633 bool WidenVectorOperand(SDNode *N, unsigned OpNo); 634 SDValue WidenVecOp_BITCAST(SDNode *N); 635 SDValue WidenVecOp_CONCAT_VECTORS(SDNode *N); 636 SDValue WidenVecOp_EXTRACT_VECTOR_ELT(SDNode *N); 637 SDValue WidenVecOp_EXTRACT_SUBVECTOR(SDNode *N); 638 SDValue WidenVecOp_STORE(SDNode* N); 639 SDValue WidenVecOp_SETCC(SDNode* N); 640 641 SDValue WidenVecOp_Convert(SDNode *N); 642 643 //===--------------------------------------------------------------------===// 644 // Vector Widening Utilities Support: LegalizeVectorTypes.cpp 645 //===--------------------------------------------------------------------===// 646 647 /// Helper GenWidenVectorLoads - Helper function to generate a set of 648 /// loads to load a vector with a resulting wider type. It takes 649 /// LdChain: list of chains for the load to be generated. 650 /// Ld: load to widen 651 SDValue GenWidenVectorLoads(SmallVector<SDValue, 16>& LdChain, 652 LoadSDNode *LD); 653 654 /// GenWidenVectorExtLoads - Helper function to generate a set of extension 655 /// loads to load a ector with a resulting wider type. It takes 656 /// LdChain: list of chains for the load to be generated. 657 /// Ld: load to widen 658 /// ExtType: extension element type 659 SDValue GenWidenVectorExtLoads(SmallVector<SDValue, 16>& LdChain, 660 LoadSDNode *LD, ISD::LoadExtType ExtType); 661 662 /// Helper genWidenVectorStores - Helper function to generate a set of 663 /// stores to store a widen vector into non widen memory 664 /// StChain: list of chains for the stores we have generated 665 /// ST: store of a widen value 666 void GenWidenVectorStores(SmallVector<SDValue, 16>& StChain, StoreSDNode *ST); 667 668 /// Helper genWidenVectorTruncStores - Helper function to generate a set of 669 /// stores to store a truncate widen vector into non widen memory 670 /// StChain: list of chains for the stores we have generated 671 /// ST: store of a widen value 672 void GenWidenVectorTruncStores(SmallVector<SDValue, 16>& StChain, 673 StoreSDNode *ST); 674 675 /// Modifies a vector input (widen or narrows) to a vector of NVT. The 676 /// input vector must have the same element type as NVT. 677 SDValue ModifyToType(SDValue InOp, EVT WidenVT); 678 679 680 //===--------------------------------------------------------------------===// 681 // Generic Splitting: LegalizeTypesGeneric.cpp 682 //===--------------------------------------------------------------------===// 683 684 // Legalization methods which only use that the illegal type is split into two 685 // not necessarily identical types. As such they can be used for splitting 686 // vectors and expanding integers and floats. 687 688 void GetSplitOp(SDValue Op, SDValue &Lo, SDValue &Hi) { 689 if (Op.getValueType().isVector()) 690 GetSplitVector(Op, Lo, Hi); 691 else if (Op.getValueType().isInteger()) 692 GetExpandedInteger(Op, Lo, Hi); 693 else 694 GetExpandedFloat(Op, Lo, Hi); 695 } 696 697 /// GetSplitDestVTs - Compute the VTs needed for the low/hi parts of a type 698 /// which is split (or expanded) into two not necessarily identical pieces. 699 void GetSplitDestVTs(EVT InVT, EVT &LoVT, EVT &HiVT); 700 701 /// GetPairElements - Use ISD::EXTRACT_ELEMENT nodes to extract the low and 702 /// high parts of the given value. 703 void GetPairElements(SDValue Pair, SDValue &Lo, SDValue &Hi); 704 705 // Generic Result Splitting. 706 void SplitRes_MERGE_VALUES(SDNode *N, unsigned ResNo, 707 SDValue &Lo, SDValue &Hi); 708 void SplitRes_SELECT (SDNode *N, SDValue &Lo, SDValue &Hi); 709 void SplitRes_SELECT_CC (SDNode *N, SDValue &Lo, SDValue &Hi); 710 void SplitRes_UNDEF (SDNode *N, SDValue &Lo, SDValue &Hi); 711 712 //===--------------------------------------------------------------------===// 713 // Generic Expansion: LegalizeTypesGeneric.cpp 714 //===--------------------------------------------------------------------===// 715 716 // Legalization methods which only use that the illegal type is split into two 717 // identical types of half the size, and that the Lo/Hi part is stored first 718 // in memory on little/big-endian machines, followed by the Hi/Lo part. As 719 // such they can be used for expanding integers and floats. 720 721 void GetExpandedOp(SDValue Op, SDValue &Lo, SDValue &Hi) { 722 if (Op.getValueType().isInteger()) 723 GetExpandedInteger(Op, Lo, Hi); 724 else 725 GetExpandedFloat(Op, Lo, Hi); 726 } 727 728 // Generic Result Expansion. 729 void ExpandRes_MERGE_VALUES (SDNode *N, unsigned ResNo, 730 SDValue &Lo, SDValue &Hi); 731 void ExpandRes_BITCAST (SDNode *N, SDValue &Lo, SDValue &Hi); 732 void ExpandRes_BUILD_PAIR (SDNode *N, SDValue &Lo, SDValue &Hi); 733 void ExpandRes_EXTRACT_ELEMENT (SDNode *N, SDValue &Lo, SDValue &Hi); 734 void ExpandRes_EXTRACT_VECTOR_ELT(SDNode *N, SDValue &Lo, SDValue &Hi); 735 void ExpandRes_NormalLoad (SDNode *N, SDValue &Lo, SDValue &Hi); 736 void ExpandRes_VAARG (SDNode *N, SDValue &Lo, SDValue &Hi); 737 738 // Generic Operand Expansion. 739 SDValue ExpandOp_BITCAST (SDNode *N); 740 SDValue ExpandOp_BUILD_VECTOR (SDNode *N); 741 SDValue ExpandOp_EXTRACT_ELEMENT (SDNode *N); 742 SDValue ExpandOp_INSERT_VECTOR_ELT(SDNode *N); 743 SDValue ExpandOp_SCALAR_TO_VECTOR (SDNode *N); 744 SDValue ExpandOp_NormalStore (SDNode *N, unsigned OpNo); 745}; 746 747} // end namespace llvm. 748 749#endif 750