LegalizeTypes.h revision 28b77e968d2b01fc9da724762bd8ddcd80650e32
1//===-- LegalizeTypes.h - Definition of the DAG Type Legalizer class ------===// 2// 3// The LLVM Compiler Infrastructure 4// 5// This file is distributed under the University of Illinois Open Source 6// License. See LICENSE.TXT for details. 7// 8//===----------------------------------------------------------------------===// 9// 10// This file defines the DAGTypeLegalizer class. This is a private interface 11// shared between the code that implements the SelectionDAG::LegalizeTypes 12// method. 13// 14//===----------------------------------------------------------------------===// 15 16#ifndef SELECTIONDAG_LEGALIZETYPES_H 17#define SELECTIONDAG_LEGALIZETYPES_H 18 19#define DEBUG_TYPE "legalize-types" 20#include "llvm/CodeGen/SelectionDAG.h" 21#include "llvm/Target/TargetLowering.h" 22#include "llvm/ADT/DenseMap.h" 23#include "llvm/ADT/DenseSet.h" 24#include "llvm/Support/Compiler.h" 25#include "llvm/Support/Debug.h" 26 27namespace llvm { 28 29//===----------------------------------------------------------------------===// 30/// DAGTypeLegalizer - This takes an arbitrary SelectionDAG as input and hacks 31/// on it until only value types the target machine can handle are left. This 32/// involves promoting small sizes to large sizes or splitting up large values 33/// into small values. 34/// 35class LLVM_LIBRARY_VISIBILITY DAGTypeLegalizer { 36 const TargetLowering &TLI; 37 SelectionDAG &DAG; 38public: 39 // NodeIdFlags - This pass uses the NodeId on the SDNodes to hold information 40 // about the state of the node. The enum has all the values. 41 enum NodeIdFlags { 42 /// ReadyToProcess - All operands have been processed, so this node is ready 43 /// to be handled. 44 ReadyToProcess = 0, 45 46 /// NewNode - This is a new node, not before seen, that was created in the 47 /// process of legalizing some other node. 48 NewNode = -1, 49 50 /// Unanalyzed - This node's ID needs to be set to the number of its 51 /// unprocessed operands. 52 Unanalyzed = -2, 53 54 /// Processed - This is a node that has already been processed. 55 Processed = -3 56 57 // 1+ - This is a node which has this many unprocessed operands. 58 }; 59private: 60 61 /// ValueTypeActions - This is a bitvector that contains two bits for each 62 /// simple value type, where the two bits correspond to the LegalizeAction 63 /// enum from TargetLowering. This can be queried with "getTypeAction(VT)". 64 TargetLowering::ValueTypeActionImpl ValueTypeActions; 65 66 /// getTypeAction - Return how we should legalize values of this type. 67 TargetLowering::LegalizeTypeAction getTypeAction(EVT VT) const { 68 return TLI.getTypeAction(*DAG.getContext(), VT); 69 } 70 71 /// isTypeLegal - Return true if this type is legal on this target. 72 bool isTypeLegal(EVT VT) const { 73 return TLI.getTypeAction(*DAG.getContext(), VT) == TargetLowering::TypeLegal; 74 } 75 76 /// IgnoreNodeResults - Pretend all of this node's results are legal. 77 bool IgnoreNodeResults(SDNode *N) const { 78 return N->getOpcode() == ISD::TargetConstant; 79 } 80 81 /// PromotedIntegers - For integer nodes that are below legal width, this map 82 /// indicates what promoted value to use. 83 DenseMap<SDValue, SDValue> PromotedIntegers; 84 85 /// ExpandedIntegers - For integer nodes that need to be expanded this map 86 /// indicates which operands are the expanded version of the input. 87 DenseMap<SDValue, std::pair<SDValue, SDValue> > ExpandedIntegers; 88 89 /// SoftenedFloats - For floating point nodes converted to integers of 90 /// the same size, this map indicates the converted value to use. 91 DenseMap<SDValue, SDValue> SoftenedFloats; 92 93 /// ExpandedFloats - For float nodes that need to be expanded this map 94 /// indicates which operands are the expanded version of the input. 95 DenseMap<SDValue, std::pair<SDValue, SDValue> > ExpandedFloats; 96 97 /// ScalarizedVectors - For nodes that are <1 x ty>, this map indicates the 98 /// scalar value of type 'ty' to use. 99 DenseMap<SDValue, SDValue> ScalarizedVectors; 100 101 /// SplitVectors - For nodes that need to be split this map indicates 102 /// which operands are the expanded version of the input. 103 DenseMap<SDValue, std::pair<SDValue, SDValue> > SplitVectors; 104 105 /// WidenedVectors - For vector nodes that need to be widened, indicates 106 /// the widened value to use. 107 DenseMap<SDValue, SDValue> WidenedVectors; 108 109 /// ReplacedValues - For values that have been replaced with another, 110 /// indicates the replacement value to use. 111 DenseMap<SDValue, SDValue> ReplacedValues; 112 113 /// Worklist - This defines a worklist of nodes to process. In order to be 114 /// pushed onto this worklist, all operands of a node must have already been 115 /// processed. 116 SmallVector<SDNode*, 128> Worklist; 117 118public: 119 explicit DAGTypeLegalizer(SelectionDAG &dag) 120 : TLI(dag.getTargetLoweringInfo()), DAG(dag), 121 ValueTypeActions(TLI.getValueTypeActions()) { 122 assert(MVT::LAST_VALUETYPE <= MVT::MAX_ALLOWED_VALUETYPE && 123 "Too many value types for ValueTypeActions to hold!"); 124 } 125 126 /// run - This is the main entry point for the type legalizer. This does a 127 /// top-down traversal of the dag, legalizing types as it goes. Returns 128 /// "true" if it made any changes. 129 bool run(); 130 131 void NoteDeletion(SDNode *Old, SDNode *New) { 132 ExpungeNode(Old); 133 ExpungeNode(New); 134 for (unsigned i = 0, e = Old->getNumValues(); i != e; ++i) 135 ReplacedValues[SDValue(Old, i)] = SDValue(New, i); 136 } 137 138private: 139 SDNode *AnalyzeNewNode(SDNode *N); 140 void AnalyzeNewValue(SDValue &Val); 141 void ExpungeNode(SDNode *N); 142 void PerformExpensiveChecks(); 143 void RemapValue(SDValue &N); 144 145 // Common routines. 146 SDValue BitConvertToInteger(SDValue Op); 147 SDValue BitConvertVectorToIntegerVector(SDValue Op); 148 SDValue CreateStackStoreLoad(SDValue Op, EVT DestVT); 149 bool CustomLowerNode(SDNode *N, EVT VT, bool LegalizeResult); 150 bool CustomWidenLowerNode(SDNode *N, EVT VT); 151 152 // DecomposeMERGE_VALUES takes a SDNode and returns the first 153 // illegal value. All other results are replaced with the 154 // corresponding input operand. 155 SDValue DecomposeMERGE_VALUES(SDNode *N); 156 157 SDValue GetVectorElementPointer(SDValue VecPtr, EVT EltVT, SDValue Index); 158 SDValue JoinIntegers(SDValue Lo, SDValue Hi); 159 SDValue LibCallify(RTLIB::Libcall LC, SDNode *N, bool isSigned); 160 SDValue MakeLibCall(RTLIB::Libcall LC, EVT RetVT, 161 const SDValue *Ops, unsigned NumOps, bool isSigned, 162 DebugLoc dl); 163 164 std::pair<SDValue, SDValue> ExpandChainLibCall(RTLIB::Libcall LC, 165 SDNode *Node, bool isSigned); 166 std::pair<SDValue, SDValue> ExpandAtomic(SDNode *Node); 167 168 SDValue PromoteTargetBoolean(SDValue Bool, EVT VT); 169 void ReplaceValueWith(SDValue From, SDValue To); 170 void SplitInteger(SDValue Op, SDValue &Lo, SDValue &Hi); 171 void SplitInteger(SDValue Op, EVT LoVT, EVT HiVT, 172 SDValue &Lo, SDValue &Hi); 173 174 //===--------------------------------------------------------------------===// 175 // Integer Promotion Support: LegalizeIntegerTypes.cpp 176 //===--------------------------------------------------------------------===// 177 178 /// GetPromotedInteger - Given a processed operand Op which was promoted to a 179 /// larger integer type, this returns the promoted value. The low bits of the 180 /// promoted value corresponding to the original type are exactly equal to Op. 181 /// The extra bits contain rubbish, so the promoted value may need to be zero- 182 /// or sign-extended from the original type before it is usable (the helpers 183 /// SExtPromotedInteger and ZExtPromotedInteger can do this for you). 184 /// For example, if Op is an i16 and was promoted to an i32, then this method 185 /// returns an i32, the lower 16 bits of which coincide with Op, and the upper 186 /// 16 bits of which contain rubbish. 187 SDValue GetPromotedInteger(SDValue Op) { 188 SDValue &PromotedOp = PromotedIntegers[Op]; 189 RemapValue(PromotedOp); 190 assert(PromotedOp.getNode() && "Operand wasn't promoted?"); 191 return PromotedOp; 192 } 193 void SetPromotedInteger(SDValue Op, SDValue Result); 194 195 /// SExtPromotedInteger - Get a promoted operand and sign extend it to the 196 /// final size. 197 SDValue SExtPromotedInteger(SDValue Op) { 198 EVT OldVT = Op.getValueType(); 199 DebugLoc dl = Op.getDebugLoc(); 200 Op = GetPromotedInteger(Op); 201 return DAG.getNode(ISD::SIGN_EXTEND_INREG, dl, Op.getValueType(), Op, 202 DAG.getValueType(OldVT)); 203 } 204 205 /// ZExtPromotedInteger - Get a promoted operand and zero extend it to the 206 /// final size. 207 SDValue ZExtPromotedInteger(SDValue Op) { 208 EVT OldVT = Op.getValueType(); 209 DebugLoc dl = Op.getDebugLoc(); 210 Op = GetPromotedInteger(Op); 211 return DAG.getZeroExtendInReg(Op, dl, OldVT.getScalarType()); 212 } 213 214 // Integer Result Promotion. 215 void PromoteIntegerResult(SDNode *N, unsigned ResNo); 216 SDValue PromoteIntRes_MERGE_VALUES(SDNode *N); 217 SDValue PromoteIntRes_AssertSext(SDNode *N); 218 SDValue PromoteIntRes_AssertZext(SDNode *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_BITCAST(SDNode *N); 227 SDValue PromoteIntRes_BSWAP(SDNode *N); 228 SDValue PromoteIntRes_BUILD_PAIR(SDNode *N); 229 SDValue PromoteIntRes_Constant(SDNode *N); 230 SDValue PromoteIntRes_CONVERT_RNDSAT(SDNode *N); 231 SDValue PromoteIntRes_CTLZ(SDNode *N); 232 SDValue PromoteIntRes_CTPOP(SDNode *N); 233 SDValue PromoteIntRes_CTTZ(SDNode *N); 234 SDValue PromoteIntRes_EXTRACT_VECTOR_ELT(SDNode *N); 235 SDValue PromoteIntRes_FP_TO_XINT(SDNode *N); 236 SDValue PromoteIntRes_FP32_TO_FP16(SDNode *N); 237 SDValue PromoteIntRes_INT_EXTEND(SDNode *N); 238 SDValue PromoteIntRes_LOAD(LoadSDNode *N); 239 SDValue PromoteIntRes_Overflow(SDNode *N); 240 SDValue PromoteIntRes_SADDSUBO(SDNode *N, unsigned ResNo); 241 SDValue PromoteIntRes_SDIV(SDNode *N); 242 SDValue PromoteIntRes_SELECT(SDNode *N); 243 SDValue PromoteIntRes_SELECT_CC(SDNode *N); 244 SDValue PromoteIntRes_SETCC(SDNode *N); 245 SDValue PromoteIntRes_SHL(SDNode *N); 246 SDValue PromoteIntRes_SimpleIntBinOp(SDNode *N); 247 SDValue PromoteIntRes_SIGN_EXTEND_INREG(SDNode *N); 248 SDValue PromoteIntRes_SRA(SDNode *N); 249 SDValue PromoteIntRes_SRL(SDNode *N); 250 SDValue PromoteIntRes_TRUNCATE(SDNode *N); 251 SDValue PromoteIntRes_UADDSUBO(SDNode *N, unsigned ResNo); 252 SDValue PromoteIntRes_UDIV(SDNode *N); 253 SDValue PromoteIntRes_UNDEF(SDNode *N); 254 SDValue PromoteIntRes_VAARG(SDNode *N); 255 SDValue PromoteIntRes_XMULO(SDNode *N, unsigned ResNo); 256 257 // Integer Operand Promotion. 258 bool PromoteIntegerOperand(SDNode *N, unsigned OperandNo); 259 SDValue PromoteIntOp_ANY_EXTEND(SDNode *N); 260 SDValue PromoteIntOp_BITCAST(SDNode *N); 261 SDValue PromoteIntOp_BUILD_PAIR(SDNode *N); 262 SDValue PromoteIntOp_BR_CC(SDNode *N, unsigned OpNo); 263 SDValue PromoteIntOp_BRCOND(SDNode *N, unsigned OpNo); 264 SDValue PromoteIntOp_BUILD_VECTOR(SDNode *N); 265 SDValue PromoteIntOp_CONVERT_RNDSAT(SDNode *N); 266 SDValue PromoteIntOp_INSERT_VECTOR_ELT(SDNode *N, unsigned OpNo); 267 SDValue PromoteIntOp_EXTRACT_ELEMENT(SDNode *N); 268 SDValue PromoteIntOp_EXTRACT_VECTOR_ELT(SDNode *N); 269 SDValue PromoteIntOp_CONCAT_VECTORS(SDNode *N); 270 SDValue PromoteIntOp_MEMBARRIER(SDNode *N); 271 SDValue PromoteIntOp_SCALAR_TO_VECTOR(SDNode *N); 272 SDValue PromoteIntOp_SELECT(SDNode *N, unsigned OpNo); 273 SDValue PromoteIntOp_SELECT_CC(SDNode *N, unsigned OpNo); 274 SDValue PromoteIntOp_SETCC(SDNode *N, unsigned OpNo); 275 SDValue PromoteIntOp_VSETCC(SDNode *N, unsigned OpNo); 276 SDValue PromoteIntOp_Shift(SDNode *N); 277 SDValue PromoteIntOp_SIGN_EXTEND(SDNode *N); 278 SDValue PromoteIntOp_SINT_TO_FP(SDNode *N); 279 SDValue PromoteIntOp_STORE(StoreSDNode *N, unsigned OpNo); 280 SDValue PromoteIntOp_TRUNCATE(SDNode *N); 281 SDValue PromoteIntOp_UINT_TO_FP(SDNode *N); 282 SDValue PromoteIntOp_ZERO_EXTEND(SDNode *N); 283 284 void PromoteSetCCOperands(SDValue &LHS,SDValue &RHS, ISD::CondCode Code); 285 286 //===--------------------------------------------------------------------===// 287 // Integer Expansion Support: LegalizeIntegerTypes.cpp 288 //===--------------------------------------------------------------------===// 289 290 /// GetExpandedInteger - Given a processed operand Op which was expanded into 291 /// two integers of half the size, this returns the two halves. The low bits 292 /// of Op are exactly equal to the bits of Lo; the high bits exactly equal Hi. 293 /// For example, if Op is an i64 which was expanded into two i32's, then this 294 /// method returns the two i32's, with Lo being equal to the lower 32 bits of 295 /// Op, and Hi being equal to the upper 32 bits. 296 void GetExpandedInteger(SDValue Op, SDValue &Lo, SDValue &Hi); 297 void SetExpandedInteger(SDValue Op, SDValue Lo, SDValue Hi); 298 299 // Integer Result Expansion. 300 void ExpandIntegerResult(SDNode *N, unsigned ResNo); 301 void ExpandIntRes_MERGE_VALUES (SDNode *N, SDValue &Lo, SDValue &Hi); 302 void ExpandIntRes_ANY_EXTEND (SDNode *N, SDValue &Lo, SDValue &Hi); 303 void ExpandIntRes_AssertSext (SDNode *N, SDValue &Lo, SDValue &Hi); 304 void ExpandIntRes_AssertZext (SDNode *N, SDValue &Lo, SDValue &Hi); 305 void ExpandIntRes_Constant (SDNode *N, SDValue &Lo, SDValue &Hi); 306 void ExpandIntRes_CTLZ (SDNode *N, SDValue &Lo, SDValue &Hi); 307 void ExpandIntRes_CTPOP (SDNode *N, SDValue &Lo, SDValue &Hi); 308 void ExpandIntRes_CTTZ (SDNode *N, SDValue &Lo, SDValue &Hi); 309 void ExpandIntRes_LOAD (LoadSDNode *N, SDValue &Lo, SDValue &Hi); 310 void ExpandIntRes_SIGN_EXTEND (SDNode *N, SDValue &Lo, SDValue &Hi); 311 void ExpandIntRes_SIGN_EXTEND_INREG (SDNode *N, SDValue &Lo, SDValue &Hi); 312 void ExpandIntRes_TRUNCATE (SDNode *N, SDValue &Lo, SDValue &Hi); 313 void ExpandIntRes_ZERO_EXTEND (SDNode *N, SDValue &Lo, SDValue &Hi); 314 void ExpandIntRes_FP_TO_SINT (SDNode *N, SDValue &Lo, SDValue &Hi); 315 void ExpandIntRes_FP_TO_UINT (SDNode *N, SDValue &Lo, SDValue &Hi); 316 317 void ExpandIntRes_Logical (SDNode *N, SDValue &Lo, SDValue &Hi); 318 void ExpandIntRes_ADDSUB (SDNode *N, SDValue &Lo, SDValue &Hi); 319 void ExpandIntRes_ADDSUBC (SDNode *N, SDValue &Lo, SDValue &Hi); 320 void ExpandIntRes_ADDSUBE (SDNode *N, SDValue &Lo, SDValue &Hi); 321 void ExpandIntRes_BSWAP (SDNode *N, SDValue &Lo, SDValue &Hi); 322 void ExpandIntRes_MUL (SDNode *N, SDValue &Lo, SDValue &Hi); 323 void ExpandIntRes_SDIV (SDNode *N, SDValue &Lo, SDValue &Hi); 324 void ExpandIntRes_SREM (SDNode *N, SDValue &Lo, SDValue &Hi); 325 void ExpandIntRes_UDIV (SDNode *N, SDValue &Lo, SDValue &Hi); 326 void ExpandIntRes_UREM (SDNode *N, SDValue &Lo, SDValue &Hi); 327 void ExpandIntRes_Shift (SDNode *N, SDValue &Lo, SDValue &Hi); 328 329 void ExpandIntRes_SADDSUBO (SDNode *N, SDValue &Lo, SDValue &Hi); 330 void ExpandIntRes_UADDSUBO (SDNode *N, SDValue &Lo, SDValue &Hi); 331 void ExpandIntRes_XMULO (SDNode *N, SDValue &Lo, SDValue &Hi); 332 333 void ExpandIntRes_ATOMIC_LOAD (SDNode *N, SDValue &Lo, SDValue &Hi); 334 335 void ExpandShiftByConstant(SDNode *N, unsigned Amt, 336 SDValue &Lo, SDValue &Hi); 337 bool ExpandShiftWithKnownAmountBit(SDNode *N, SDValue &Lo, SDValue &Hi); 338 bool ExpandShiftWithUnknownAmountBit(SDNode *N, SDValue &Lo, SDValue &Hi); 339 340 // Integer Operand Expansion. 341 bool ExpandIntegerOperand(SDNode *N, unsigned OperandNo); 342 SDValue ExpandIntOp_BITCAST(SDNode *N); 343 SDValue ExpandIntOp_BR_CC(SDNode *N); 344 SDValue ExpandIntOp_BUILD_VECTOR(SDNode *N); 345 SDValue ExpandIntOp_EXTRACT_ELEMENT(SDNode *N); 346 SDValue ExpandIntOp_SELECT_CC(SDNode *N); 347 SDValue ExpandIntOp_SETCC(SDNode *N); 348 SDValue ExpandIntOp_Shift(SDNode *N); 349 SDValue ExpandIntOp_SINT_TO_FP(SDNode *N); 350 SDValue ExpandIntOp_STORE(StoreSDNode *N, unsigned OpNo); 351 SDValue ExpandIntOp_TRUNCATE(SDNode *N); 352 SDValue ExpandIntOp_UINT_TO_FP(SDNode *N); 353 SDValue ExpandIntOp_RETURNADDR(SDNode *N); 354 SDValue ExpandIntOp_ATOMIC_STORE(SDNode *N); 355 356 void IntegerExpandSetCCOperands(SDValue &NewLHS, SDValue &NewRHS, 357 ISD::CondCode &CCCode, DebugLoc dl); 358 359 //===--------------------------------------------------------------------===// 360 // Float to Integer Conversion Support: LegalizeFloatTypes.cpp 361 //===--------------------------------------------------------------------===// 362 363 /// GetSoftenedFloat - Given a processed operand Op which was converted to an 364 /// integer of the same size, this returns the integer. The integer contains 365 /// exactly the same bits as Op - only the type changed. For example, if Op 366 /// is an f32 which was softened to an i32, then this method returns an i32, 367 /// the bits of which coincide with those of Op. 368 SDValue GetSoftenedFloat(SDValue Op) { 369 SDValue &SoftenedOp = SoftenedFloats[Op]; 370 RemapValue(SoftenedOp); 371 assert(SoftenedOp.getNode() && "Operand wasn't converted to integer?"); 372 return SoftenedOp; 373 } 374 void SetSoftenedFloat(SDValue Op, SDValue Result); 375 376 // Result Float to Integer Conversion. 377 void SoftenFloatResult(SDNode *N, unsigned OpNo); 378 SDValue SoftenFloatRes_MERGE_VALUES(SDNode *N); 379 SDValue SoftenFloatRes_BITCAST(SDNode *N); 380 SDValue SoftenFloatRes_BUILD_PAIR(SDNode *N); 381 SDValue SoftenFloatRes_ConstantFP(ConstantFPSDNode *N); 382 SDValue SoftenFloatRes_EXTRACT_VECTOR_ELT(SDNode *N); 383 SDValue SoftenFloatRes_FABS(SDNode *N); 384 SDValue SoftenFloatRes_FADD(SDNode *N); 385 SDValue SoftenFloatRes_FCEIL(SDNode *N); 386 SDValue SoftenFloatRes_FCOPYSIGN(SDNode *N); 387 SDValue SoftenFloatRes_FCOS(SDNode *N); 388 SDValue SoftenFloatRes_FDIV(SDNode *N); 389 SDValue SoftenFloatRes_FEXP(SDNode *N); 390 SDValue SoftenFloatRes_FEXP2(SDNode *N); 391 SDValue SoftenFloatRes_FFLOOR(SDNode *N); 392 SDValue SoftenFloatRes_FLOG(SDNode *N); 393 SDValue SoftenFloatRes_FLOG2(SDNode *N); 394 SDValue SoftenFloatRes_FLOG10(SDNode *N); 395 SDValue SoftenFloatRes_FMA(SDNode *N); 396 SDValue SoftenFloatRes_FMUL(SDNode *N); 397 SDValue SoftenFloatRes_FNEARBYINT(SDNode *N); 398 SDValue SoftenFloatRes_FNEG(SDNode *N); 399 SDValue SoftenFloatRes_FP_EXTEND(SDNode *N); 400 SDValue SoftenFloatRes_FP16_TO_FP32(SDNode *N); 401 SDValue SoftenFloatRes_FP_ROUND(SDNode *N); 402 SDValue SoftenFloatRes_FPOW(SDNode *N); 403 SDValue SoftenFloatRes_FPOWI(SDNode *N); 404 SDValue SoftenFloatRes_FREM(SDNode *N); 405 SDValue SoftenFloatRes_FRINT(SDNode *N); 406 SDValue SoftenFloatRes_FSIN(SDNode *N); 407 SDValue SoftenFloatRes_FSQRT(SDNode *N); 408 SDValue SoftenFloatRes_FSUB(SDNode *N); 409 SDValue SoftenFloatRes_FTRUNC(SDNode *N); 410 SDValue SoftenFloatRes_LOAD(SDNode *N); 411 SDValue SoftenFloatRes_SELECT(SDNode *N); 412 SDValue SoftenFloatRes_SELECT_CC(SDNode *N); 413 SDValue SoftenFloatRes_UNDEF(SDNode *N); 414 SDValue SoftenFloatRes_VAARG(SDNode *N); 415 SDValue SoftenFloatRes_XINT_TO_FP(SDNode *N); 416 417 // Operand Float to Integer Conversion. 418 bool SoftenFloatOperand(SDNode *N, unsigned OpNo); 419 SDValue SoftenFloatOp_BITCAST(SDNode *N); 420 SDValue SoftenFloatOp_BR_CC(SDNode *N); 421 SDValue SoftenFloatOp_FP_ROUND(SDNode *N); 422 SDValue SoftenFloatOp_FP_TO_SINT(SDNode *N); 423 SDValue SoftenFloatOp_FP_TO_UINT(SDNode *N); 424 SDValue SoftenFloatOp_FP32_TO_FP16(SDNode *N); 425 SDValue SoftenFloatOp_SELECT_CC(SDNode *N); 426 SDValue SoftenFloatOp_SETCC(SDNode *N); 427 SDValue SoftenFloatOp_STORE(SDNode *N, unsigned OpNo); 428 429 void SoftenSetCCOperands(SDValue &NewLHS, SDValue &NewRHS, 430 ISD::CondCode &CCCode, DebugLoc dl); 431 432 //===--------------------------------------------------------------------===// 433 // Float Expansion Support: LegalizeFloatTypes.cpp 434 //===--------------------------------------------------------------------===// 435 436 /// GetExpandedFloat - Given a processed operand Op which was expanded into 437 /// two floating point values of half the size, this returns the two halves. 438 /// The low bits of Op are exactly equal to the bits of Lo; the high bits 439 /// exactly equal Hi. For example, if Op is a ppcf128 which was expanded 440 /// into two f64's, then this method returns the two f64's, with Lo being 441 /// equal to the lower 64 bits of Op, and Hi to the upper 64 bits. 442 void GetExpandedFloat(SDValue Op, SDValue &Lo, SDValue &Hi); 443 void SetExpandedFloat(SDValue Op, SDValue Lo, SDValue Hi); 444 445 // Float Result Expansion. 446 void ExpandFloatResult(SDNode *N, unsigned ResNo); 447 void ExpandFloatRes_ConstantFP(SDNode *N, SDValue &Lo, SDValue &Hi); 448 void ExpandFloatRes_FABS (SDNode *N, SDValue &Lo, SDValue &Hi); 449 void ExpandFloatRes_FADD (SDNode *N, SDValue &Lo, SDValue &Hi); 450 void ExpandFloatRes_FCEIL (SDNode *N, SDValue &Lo, SDValue &Hi); 451 void ExpandFloatRes_FCOPYSIGN (SDNode *N, SDValue &Lo, SDValue &Hi); 452 void ExpandFloatRes_FCOS (SDNode *N, SDValue &Lo, SDValue &Hi); 453 void ExpandFloatRes_FDIV (SDNode *N, SDValue &Lo, SDValue &Hi); 454 void ExpandFloatRes_FEXP (SDNode *N, SDValue &Lo, SDValue &Hi); 455 void ExpandFloatRes_FEXP2 (SDNode *N, SDValue &Lo, SDValue &Hi); 456 void ExpandFloatRes_FFLOOR (SDNode *N, SDValue &Lo, SDValue &Hi); 457 void ExpandFloatRes_FLOG (SDNode *N, SDValue &Lo, SDValue &Hi); 458 void ExpandFloatRes_FLOG2 (SDNode *N, SDValue &Lo, SDValue &Hi); 459 void ExpandFloatRes_FLOG10 (SDNode *N, SDValue &Lo, SDValue &Hi); 460 void ExpandFloatRes_FMA (SDNode *N, SDValue &Lo, SDValue &Hi); 461 void ExpandFloatRes_FMUL (SDNode *N, SDValue &Lo, SDValue &Hi); 462 void ExpandFloatRes_FNEARBYINT(SDNode *N, SDValue &Lo, SDValue &Hi); 463 void ExpandFloatRes_FNEG (SDNode *N, SDValue &Lo, SDValue &Hi); 464 void ExpandFloatRes_FP_EXTEND (SDNode *N, SDValue &Lo, SDValue &Hi); 465 void ExpandFloatRes_FPOW (SDNode *N, SDValue &Lo, SDValue &Hi); 466 void ExpandFloatRes_FPOWI (SDNode *N, SDValue &Lo, SDValue &Hi); 467 void ExpandFloatRes_FRINT (SDNode *N, SDValue &Lo, SDValue &Hi); 468 void ExpandFloatRes_FSIN (SDNode *N, SDValue &Lo, SDValue &Hi); 469 void ExpandFloatRes_FSQRT (SDNode *N, SDValue &Lo, SDValue &Hi); 470 void ExpandFloatRes_FSUB (SDNode *N, SDValue &Lo, SDValue &Hi); 471 void ExpandFloatRes_FTRUNC (SDNode *N, SDValue &Lo, SDValue &Hi); 472 void ExpandFloatRes_LOAD (SDNode *N, SDValue &Lo, SDValue &Hi); 473 void ExpandFloatRes_XINT_TO_FP(SDNode *N, SDValue &Lo, SDValue &Hi); 474 475 // Float Operand Expansion. 476 bool ExpandFloatOperand(SDNode *N, unsigned OperandNo); 477 SDValue ExpandFloatOp_BR_CC(SDNode *N); 478 SDValue ExpandFloatOp_FP_ROUND(SDNode *N); 479 SDValue ExpandFloatOp_FP_TO_SINT(SDNode *N); 480 SDValue ExpandFloatOp_FP_TO_UINT(SDNode *N); 481 SDValue ExpandFloatOp_SELECT_CC(SDNode *N); 482 SDValue ExpandFloatOp_SETCC(SDNode *N); 483 SDValue ExpandFloatOp_STORE(SDNode *N, unsigned OpNo); 484 485 void FloatExpandSetCCOperands(SDValue &NewLHS, SDValue &NewRHS, 486 ISD::CondCode &CCCode, DebugLoc dl); 487 488 //===--------------------------------------------------------------------===// 489 // Scalarization Support: LegalizeVectorTypes.cpp 490 //===--------------------------------------------------------------------===// 491 492 /// GetScalarizedVector - Given a processed one-element vector Op which was 493 /// scalarized to its element type, this returns the element. For example, 494 /// if Op is a v1i32, Op = < i32 val >, this method returns val, an i32. 495 SDValue GetScalarizedVector(SDValue Op) { 496 SDValue &ScalarizedOp = ScalarizedVectors[Op]; 497 RemapValue(ScalarizedOp); 498 assert(ScalarizedOp.getNode() && "Operand wasn't scalarized?"); 499 return ScalarizedOp; 500 } 501 void SetScalarizedVector(SDValue Op, SDValue Result); 502 503 // Vector Result Scalarization: <1 x ty> -> ty. 504 void ScalarizeVectorResult(SDNode *N, unsigned OpNo); 505 SDValue ScalarizeVecRes_MERGE_VALUES(SDNode *N); 506 SDValue ScalarizeVecRes_BinOp(SDNode *N); 507 SDValue ScalarizeVecRes_UnaryOp(SDNode *N); 508 SDValue ScalarizeVecRes_InregOp(SDNode *N); 509 510 SDValue ScalarizeVecRes_BITCAST(SDNode *N); 511 SDValue ScalarizeVecRes_CONVERT_RNDSAT(SDNode *N); 512 SDValue ScalarizeVecRes_EXTRACT_SUBVECTOR(SDNode *N); 513 SDValue ScalarizeVecRes_FP_ROUND(SDNode *N); 514 SDValue ScalarizeVecRes_FPOWI(SDNode *N); 515 SDValue ScalarizeVecRes_INSERT_VECTOR_ELT(SDNode *N); 516 SDValue ScalarizeVecRes_LOAD(LoadSDNode *N); 517 SDValue ScalarizeVecRes_SCALAR_TO_VECTOR(SDNode *N); 518 SDValue ScalarizeVecRes_SIGN_EXTEND_INREG(SDNode *N); 519 SDValue ScalarizeVecRes_SELECT(SDNode *N); 520 SDValue ScalarizeVecRes_SELECT_CC(SDNode *N); 521 SDValue ScalarizeVecRes_SETCC(SDNode *N); 522 SDValue ScalarizeVecRes_UNDEF(SDNode *N); 523 SDValue ScalarizeVecRes_VECTOR_SHUFFLE(SDNode *N); 524 SDValue ScalarizeVecRes_VSETCC(SDNode *N); 525 526 // Vector Operand Scalarization: <1 x ty> -> ty. 527 bool ScalarizeVectorOperand(SDNode *N, unsigned OpNo); 528 SDValue ScalarizeVecOp_BITCAST(SDNode *N); 529 SDValue ScalarizeVecOp_CONCAT_VECTORS(SDNode *N); 530 SDValue ScalarizeVecOp_EXTRACT_VECTOR_ELT(SDNode *N); 531 SDValue ScalarizeVecOp_STORE(StoreSDNode *N, unsigned OpNo); 532 533 //===--------------------------------------------------------------------===// 534 // Vector Splitting Support: LegalizeVectorTypes.cpp 535 //===--------------------------------------------------------------------===// 536 537 /// GetSplitVector - Given a processed vector Op which was split into vectors 538 /// of half the size, this method returns the halves. The first elements of 539 /// Op coincide with the elements of Lo; the remaining elements of Op coincide 540 /// with the elements of Hi: Op is what you would get by concatenating Lo and 541 /// Hi. For example, if Op is a v8i32 that was split into two v4i32's, then 542 /// this method returns the two v4i32's, with Lo corresponding to the first 4 543 /// elements of Op, and Hi to the last 4 elements. 544 void GetSplitVector(SDValue Op, SDValue &Lo, SDValue &Hi); 545 void SetSplitVector(SDValue Op, SDValue Lo, SDValue Hi); 546 547 // Vector Result Splitting: <128 x ty> -> 2 x <64 x ty>. 548 void SplitVectorResult(SDNode *N, unsigned OpNo); 549 void SplitVecRes_BinOp(SDNode *N, SDValue &Lo, SDValue &Hi); 550 void SplitVecRes_UnaryOp(SDNode *N, SDValue &Lo, SDValue &Hi); 551 void SplitVecRes_InregOp(SDNode *N, SDValue &Lo, SDValue &Hi); 552 553 void SplitVecRes_BITCAST(SDNode *N, SDValue &Lo, SDValue &Hi); 554 void SplitVecRes_BUILD_PAIR(SDNode *N, SDValue &Lo, SDValue &Hi); 555 void SplitVecRes_BUILD_VECTOR(SDNode *N, SDValue &Lo, SDValue &Hi); 556 void SplitVecRes_CONCAT_VECTORS(SDNode *N, SDValue &Lo, SDValue &Hi); 557 void SplitVecRes_EXTRACT_SUBVECTOR(SDNode *N, SDValue &Lo, SDValue &Hi); 558 void SplitVecRes_FPOWI(SDNode *N, SDValue &Lo, SDValue &Hi); 559 void SplitVecRes_INSERT_VECTOR_ELT(SDNode *N, SDValue &Lo, SDValue &Hi); 560 void SplitVecRes_LOAD(LoadSDNode *N, SDValue &Lo, SDValue &Hi); 561 void SplitVecRes_SCALAR_TO_VECTOR(SDNode *N, SDValue &Lo, SDValue &Hi); 562 void SplitVecRes_SIGN_EXTEND_INREG(SDNode *N, SDValue &Lo, SDValue &Hi); 563 void SplitVecRes_SETCC(SDNode *N, SDValue &Lo, SDValue &Hi); 564 void SplitVecRes_UNDEF(SDNode *N, SDValue &Lo, SDValue &Hi); 565 void SplitVecRes_VECTOR_SHUFFLE(ShuffleVectorSDNode *N, SDValue &Lo, 566 SDValue &Hi); 567 568 // Vector Operand Splitting: <128 x ty> -> 2 x <64 x ty>. 569 bool SplitVectorOperand(SDNode *N, unsigned OpNo); 570 SDValue SplitVecOp_UnaryOp(SDNode *N); 571 572 SDValue SplitVecOp_BITCAST(SDNode *N); 573 SDValue SplitVecOp_EXTRACT_SUBVECTOR(SDNode *N); 574 SDValue SplitVecOp_EXTRACT_VECTOR_ELT(SDNode *N); 575 SDValue SplitVecOp_STORE(StoreSDNode *N, unsigned OpNo); 576 SDValue SplitVecOp_CONCAT_VECTORS(SDNode *N); 577 SDValue SplitVecOp_VSETCC(SDNode *N); 578 SDValue SplitVecOp_FP_ROUND(SDNode *N); 579 580 //===--------------------------------------------------------------------===// 581 // Vector Widening Support: LegalizeVectorTypes.cpp 582 //===--------------------------------------------------------------------===// 583 584 /// GetWidenedVector - Given a processed vector Op which was widened into a 585 /// larger vector, this method returns the larger vector. The elements of 586 /// the returned vector consist of the elements of Op followed by elements 587 /// containing rubbish. For example, if Op is a v2i32 that was widened to a 588 /// v4i32, then this method returns a v4i32 for which the first two elements 589 /// are the same as those of Op, while the last two elements contain rubbish. 590 SDValue GetWidenedVector(SDValue Op) { 591 SDValue &WidenedOp = WidenedVectors[Op]; 592 RemapValue(WidenedOp); 593 assert(WidenedOp.getNode() && "Operand wasn't widened?"); 594 return WidenedOp; 595 } 596 void SetWidenedVector(SDValue Op, SDValue Result); 597 598 // Widen Vector Result Promotion. 599 void WidenVectorResult(SDNode *N, unsigned ResNo); 600 SDValue WidenVecRes_MERGE_VALUES(SDNode* N); 601 SDValue WidenVecRes_BITCAST(SDNode* N); 602 SDValue WidenVecRes_BUILD_VECTOR(SDNode* N); 603 SDValue WidenVecRes_CONCAT_VECTORS(SDNode* N); 604 SDValue WidenVecRes_CONVERT_RNDSAT(SDNode* N); 605 SDValue WidenVecRes_EXTRACT_SUBVECTOR(SDNode* N); 606 SDValue WidenVecRes_INSERT_VECTOR_ELT(SDNode* N); 607 SDValue WidenVecRes_LOAD(SDNode* N); 608 SDValue WidenVecRes_SCALAR_TO_VECTOR(SDNode* N); 609 SDValue WidenVecRes_SIGN_EXTEND_INREG(SDNode* N); 610 SDValue WidenVecRes_SELECT(SDNode* N); 611 SDValue WidenVecRes_SELECT_CC(SDNode* N); 612 SDValue WidenVecRes_SETCC(SDNode* N); 613 SDValue WidenVecRes_UNDEF(SDNode *N); 614 SDValue WidenVecRes_VECTOR_SHUFFLE(ShuffleVectorSDNode *N); 615 SDValue WidenVecRes_VSETCC(SDNode* N); 616 617 SDValue WidenVecRes_Binary(SDNode *N); 618 SDValue WidenVecRes_Convert(SDNode *N); 619 SDValue WidenVecRes_POWI(SDNode *N); 620 SDValue WidenVecRes_Shift(SDNode *N); 621 SDValue WidenVecRes_Unary(SDNode *N); 622 SDValue WidenVecRes_InregOp(SDNode *N); 623 624 // Widen Vector Operand. 625 bool WidenVectorOperand(SDNode *N, unsigned ResNo); 626 SDValue WidenVecOp_BITCAST(SDNode *N); 627 SDValue WidenVecOp_CONCAT_VECTORS(SDNode *N); 628 SDValue WidenVecOp_EXTRACT_VECTOR_ELT(SDNode *N); 629 SDValue WidenVecOp_EXTRACT_SUBVECTOR(SDNode *N); 630 SDValue WidenVecOp_STORE(SDNode* N); 631 632 SDValue WidenVecOp_Convert(SDNode *N); 633 634 //===--------------------------------------------------------------------===// 635 // Vector Widening Utilities Support: LegalizeVectorTypes.cpp 636 //===--------------------------------------------------------------------===// 637 638 /// Helper GenWidenVectorLoads - Helper function to generate a set of 639 /// loads to load a vector with a resulting wider type. It takes 640 /// LdChain: list of chains for the load to be generated. 641 /// Ld: load to widen 642 SDValue GenWidenVectorLoads(SmallVector<SDValue, 16>& LdChain, 643 LoadSDNode *LD); 644 645 /// GenWidenVectorExtLoads - Helper function to generate a set of extension 646 /// loads to load a ector with a resulting wider type. It takes 647 /// LdChain: list of chains for the load to be generated. 648 /// Ld: load to widen 649 /// ExtType: extension element type 650 SDValue GenWidenVectorExtLoads(SmallVector<SDValue, 16>& LdChain, 651 LoadSDNode *LD, ISD::LoadExtType ExtType); 652 653 /// Helper genWidenVectorStores - Helper function to generate a set of 654 /// stores to store a widen vector into non widen memory 655 /// StChain: list of chains for the stores we have generated 656 /// ST: store of a widen value 657 void GenWidenVectorStores(SmallVector<SDValue, 16>& StChain, StoreSDNode *ST); 658 659 /// Helper genWidenVectorTruncStores - Helper function to generate a set of 660 /// stores to store a truncate widen vector into non widen memory 661 /// StChain: list of chains for the stores we have generated 662 /// ST: store of a widen value 663 void GenWidenVectorTruncStores(SmallVector<SDValue, 16>& StChain, 664 StoreSDNode *ST); 665 666 /// Modifies a vector input (widen or narrows) to a vector of NVT. The 667 /// input vector must have the same element type as NVT. 668 SDValue ModifyToType(SDValue InOp, EVT WidenVT); 669 670 671 //===--------------------------------------------------------------------===// 672 // Generic Splitting: LegalizeTypesGeneric.cpp 673 //===--------------------------------------------------------------------===// 674 675 // Legalization methods which only use that the illegal type is split into two 676 // not necessarily identical types. As such they can be used for splitting 677 // vectors and expanding integers and floats. 678 679 void GetSplitOp(SDValue Op, SDValue &Lo, SDValue &Hi) { 680 if (Op.getValueType().isVector()) 681 GetSplitVector(Op, Lo, Hi); 682 else if (Op.getValueType().isInteger()) 683 GetExpandedInteger(Op, Lo, Hi); 684 else 685 GetExpandedFloat(Op, Lo, Hi); 686 } 687 688 /// GetSplitDestVTs - Compute the VTs needed for the low/hi parts of a type 689 /// which is split (or expanded) into two not necessarily identical pieces. 690 void GetSplitDestVTs(EVT InVT, EVT &LoVT, EVT &HiVT); 691 692 /// GetPairElements - Use ISD::EXTRACT_ELEMENT nodes to extract the low and 693 /// high parts of the given value. 694 void GetPairElements(SDValue Pair, SDValue &Lo, SDValue &Hi); 695 696 // Generic Result Splitting. 697 void SplitRes_MERGE_VALUES(SDNode *N, SDValue &Lo, SDValue &Hi); 698 void SplitRes_SELECT (SDNode *N, SDValue &Lo, SDValue &Hi); 699 void SplitRes_SELECT_CC (SDNode *N, SDValue &Lo, SDValue &Hi); 700 void SplitRes_UNDEF (SDNode *N, SDValue &Lo, SDValue &Hi); 701 702 //===--------------------------------------------------------------------===// 703 // Generic Expansion: LegalizeTypesGeneric.cpp 704 //===--------------------------------------------------------------------===// 705 706 // Legalization methods which only use that the illegal type is split into two 707 // identical types of half the size, and that the Lo/Hi part is stored first 708 // in memory on little/big-endian machines, followed by the Hi/Lo part. As 709 // such they can be used for expanding integers and floats. 710 711 void GetExpandedOp(SDValue Op, SDValue &Lo, SDValue &Hi) { 712 if (Op.getValueType().isInteger()) 713 GetExpandedInteger(Op, Lo, Hi); 714 else 715 GetExpandedFloat(Op, Lo, Hi); 716 } 717 718 // Generic Result Expansion. 719 void ExpandRes_MERGE_VALUES (SDNode *N, SDValue &Lo, SDValue &Hi); 720 void ExpandRes_BITCAST (SDNode *N, SDValue &Lo, SDValue &Hi); 721 void ExpandRes_BUILD_PAIR (SDNode *N, SDValue &Lo, SDValue &Hi); 722 void ExpandRes_EXTRACT_ELEMENT (SDNode *N, SDValue &Lo, SDValue &Hi); 723 void ExpandRes_EXTRACT_VECTOR_ELT(SDNode *N, SDValue &Lo, SDValue &Hi); 724 void ExpandRes_NormalLoad (SDNode *N, SDValue &Lo, SDValue &Hi); 725 void ExpandRes_VAARG (SDNode *N, SDValue &Lo, SDValue &Hi); 726 727 // Generic Operand Expansion. 728 SDValue ExpandOp_BITCAST (SDNode *N); 729 SDValue ExpandOp_BUILD_VECTOR (SDNode *N); 730 SDValue ExpandOp_EXTRACT_ELEMENT (SDNode *N); 731 SDValue ExpandOp_INSERT_VECTOR_ELT(SDNode *N); 732 SDValue ExpandOp_SCALAR_TO_VECTOR (SDNode *N); 733 SDValue ExpandOp_NormalStore (SDNode *N, unsigned OpNo); 734}; 735 736} // end namespace llvm. 737 738#endif 739