1 //===-- LegalizeTypes.h - DAG Type Legalizer class definition ---*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file defines the DAGTypeLegalizer class. This is a private interface
11 // shared between the code that implements the SelectionDAG::LegalizeTypes
14 //===----------------------------------------------------------------------===//
16 #ifndef LLVM_LIB_CODEGEN_SELECTIONDAG_LEGALIZETYPES_H
17 #define LLVM_LIB_CODEGEN_SELECTIONDAG_LEGALIZETYPES_H
19 #include "llvm/ADT/DenseMap.h"
20 #include "llvm/ADT/DenseSet.h"
21 #include "llvm/CodeGen/SelectionDAG.h"
22 #include "llvm/Support/Compiler.h"
23 #include "llvm/Support/Debug.h"
24 #include "llvm/Target/TargetLowering.h"
28 //===----------------------------------------------------------------------===//
29 /// DAGTypeLegalizer - This takes an arbitrary SelectionDAG as input and hacks
30 /// on it until only value types the target machine can handle are left. This
31 /// involves promoting small sizes to large sizes or splitting up large values
32 /// into small values.
34 class LLVM_LIBRARY_VISIBILITY DAGTypeLegalizer {
35 const TargetLowering &TLI;
38 // NodeIdFlags - This pass uses the NodeId on the SDNodes to hold information
39 // about the state of the node. The enum has all the values.
41 /// ReadyToProcess - All operands have been processed, so this node is ready
45 /// NewNode - This is a new node, not before seen, that was created in the
46 /// process of legalizing some other node.
49 /// Unanalyzed - This node's ID needs to be set to the number of its
50 /// unprocessed operands.
53 /// Processed - This is a node that has already been processed.
56 // 1+ - This is a node which has this many unprocessed operands.
60 /// ValueTypeActions - This is a bitvector that contains two bits for each
61 /// simple value type, where the two bits correspond to the LegalizeAction
62 /// enum from TargetLowering. This can be queried with "getTypeAction(VT)".
63 TargetLowering::ValueTypeActionImpl ValueTypeActions;
65 /// getTypeAction - Return how we should legalize values of this type.
66 TargetLowering::LegalizeTypeAction getTypeAction(EVT VT) const {
67 return TLI.getTypeAction(*DAG.getContext(), VT);
70 /// isTypeLegal - Return true if this type is legal on this target.
71 bool isTypeLegal(EVT VT) const {
72 return TLI.getTypeAction(*DAG.getContext(), VT) == TargetLowering::TypeLegal;
75 /// isSimpleLegalType - Return true if this is a simple legal type.
76 bool isSimpleLegalType(EVT VT) const {
77 return VT.isSimple() && TLI.isTypeLegal(VT);
80 /// isLegalInHWReg - Return true if this type can be passed in registers.
81 /// For example, x86_64's f128, should to be legally in registers
82 /// and only some operations converted to library calls or integer
83 /// bitwise operations.
84 bool isLegalInHWReg(EVT VT) const {
85 EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), VT);
86 return VT == NVT && isSimpleLegalType(VT);
89 EVT getSetCCResultType(EVT VT) const {
90 return TLI.getSetCCResultType(DAG.getDataLayout(), *DAG.getContext(), VT);
93 /// IgnoreNodeResults - Pretend all of this node's results are legal.
94 bool IgnoreNodeResults(SDNode *N) const {
95 return N->getOpcode() == ISD::TargetConstant;
98 /// PromotedIntegers - For integer nodes that are below legal width, this map
99 /// indicates what promoted value to use.
100 SmallDenseMap<SDValue, SDValue, 8> PromotedIntegers;
102 /// ExpandedIntegers - For integer nodes that need to be expanded this map
103 /// indicates which operands are the expanded version of the input.
104 SmallDenseMap<SDValue, std::pair<SDValue, SDValue>, 8> ExpandedIntegers;
106 /// SoftenedFloats - For floating point nodes converted to integers of
107 /// the same size, this map indicates the converted value to use.
108 SmallDenseMap<SDValue, SDValue, 8> SoftenedFloats;
110 /// PromotedFloats - For floating point nodes that have a smaller precision
111 /// than the smallest supported precision, this map indicates what promoted
113 SmallDenseMap<SDValue, SDValue, 8> PromotedFloats;
115 /// ExpandedFloats - For float nodes that need to be expanded this map
116 /// indicates which operands are the expanded version of the input.
117 SmallDenseMap<SDValue, std::pair<SDValue, SDValue>, 8> ExpandedFloats;
119 /// ScalarizedVectors - For nodes that are <1 x ty>, this map indicates the
120 /// scalar value of type 'ty' to use.
121 SmallDenseMap<SDValue, SDValue, 8> ScalarizedVectors;
123 /// SplitVectors - For nodes that need to be split this map indicates
124 /// which operands are the expanded version of the input.
125 SmallDenseMap<SDValue, std::pair<SDValue, SDValue>, 8> SplitVectors;
127 /// WidenedVectors - For vector nodes that need to be widened, indicates
128 /// the widened value to use.
129 SmallDenseMap<SDValue, SDValue, 8> WidenedVectors;
131 /// ReplacedValues - For values that have been replaced with another,
132 /// indicates the replacement value to use.
133 SmallDenseMap<SDValue, SDValue, 8> ReplacedValues;
135 /// Worklist - This defines a worklist of nodes to process. In order to be
136 /// pushed onto this worklist, all operands of a node must have already been
138 SmallVector<SDNode*, 128> Worklist;
141 explicit DAGTypeLegalizer(SelectionDAG &dag)
142 : TLI(dag.getTargetLoweringInfo()), DAG(dag),
143 ValueTypeActions(TLI.getValueTypeActions()) {
144 static_assert(MVT::LAST_VALUETYPE <= MVT::MAX_ALLOWED_VALUETYPE,
145 "Too many value types for ValueTypeActions to hold!");
148 /// run - This is the main entry point for the type legalizer. This does a
149 /// top-down traversal of the dag, legalizing types as it goes. Returns
150 /// "true" if it made any changes.
153 void NoteDeletion(SDNode *Old, SDNode *New) {
156 for (unsigned i = 0, e = Old->getNumValues(); i != e; ++i)
157 ReplacedValues[SDValue(Old, i)] = SDValue(New, i);
160 SelectionDAG &getDAG() const { return DAG; }
163 SDNode *AnalyzeNewNode(SDNode *N);
164 void AnalyzeNewValue(SDValue &Val);
165 void ExpungeNode(SDNode *N);
166 void PerformExpensiveChecks();
167 void RemapValue(SDValue &N);
170 SDValue BitConvertToInteger(SDValue Op);
171 SDValue BitConvertVectorToIntegerVector(SDValue Op);
172 SDValue CreateStackStoreLoad(SDValue Op, EVT DestVT);
173 bool CustomLowerNode(SDNode *N, EVT VT, bool LegalizeResult);
174 bool CustomWidenLowerNode(SDNode *N, EVT VT);
176 /// DisintegrateMERGE_VALUES - Replace each result of the given MERGE_VALUES
177 /// node with the corresponding input operand, except for the result 'ResNo',
178 /// for which the corresponding input operand is returned.
179 SDValue DisintegrateMERGE_VALUES(SDNode *N, unsigned ResNo);
181 SDValue GetVectorElementPointer(SDValue VecPtr, EVT EltVT, SDValue Index);
182 SDValue JoinIntegers(SDValue Lo, SDValue Hi);
183 SDValue LibCallify(RTLIB::Libcall LC, SDNode *N, bool isSigned);
185 std::pair<SDValue, SDValue> ExpandChainLibCall(RTLIB::Libcall LC,
186 SDNode *Node, bool isSigned);
187 std::pair<SDValue, SDValue> ExpandAtomic(SDNode *Node);
189 SDValue PromoteTargetBoolean(SDValue Bool, EVT ValVT);
191 /// Modify Bit Vector to match SetCC result type of ValVT.
192 /// The bit vector is widened with zeroes when WithZeroes is true.
193 SDValue WidenTargetBoolean(SDValue Bool, EVT ValVT, bool WithZeroes = false);
195 void ReplaceValueWith(SDValue From, SDValue To);
196 void SplitInteger(SDValue Op, SDValue &Lo, SDValue &Hi);
197 void SplitInteger(SDValue Op, EVT LoVT, EVT HiVT,
198 SDValue &Lo, SDValue &Hi);
200 //===--------------------------------------------------------------------===//
201 // Integer Promotion Support: LegalizeIntegerTypes.cpp
202 //===--------------------------------------------------------------------===//
204 /// GetPromotedInteger - Given a processed operand Op which was promoted to a
205 /// larger integer type, this returns the promoted value. The low bits of the
206 /// promoted value corresponding to the original type are exactly equal to Op.
207 /// The extra bits contain rubbish, so the promoted value may need to be zero-
208 /// or sign-extended from the original type before it is usable (the helpers
209 /// SExtPromotedInteger and ZExtPromotedInteger can do this for you).
210 /// For example, if Op is an i16 and was promoted to an i32, then this method
211 /// returns an i32, the lower 16 bits of which coincide with Op, and the upper
212 /// 16 bits of which contain rubbish.
213 SDValue GetPromotedInteger(SDValue Op) {
214 SDValue &PromotedOp = PromotedIntegers[Op];
215 RemapValue(PromotedOp);
216 assert(PromotedOp.getNode() && "Operand wasn't promoted?");
219 void SetPromotedInteger(SDValue Op, SDValue Result);
221 /// SExtPromotedInteger - Get a promoted operand and sign extend it to the
223 SDValue SExtPromotedInteger(SDValue Op) {
224 EVT OldVT = Op.getValueType();
226 Op = GetPromotedInteger(Op);
227 return DAG.getNode(ISD::SIGN_EXTEND_INREG, dl, Op.getValueType(), Op,
228 DAG.getValueType(OldVT));
231 /// ZExtPromotedInteger - Get a promoted operand and zero extend it to the
233 SDValue ZExtPromotedInteger(SDValue Op) {
234 EVT OldVT = Op.getValueType();
236 Op = GetPromotedInteger(Op);
237 return DAG.getZeroExtendInReg(Op, dl, OldVT.getScalarType());
240 // Integer Result Promotion.
241 void PromoteIntegerResult(SDNode *N, unsigned ResNo);
242 SDValue PromoteIntRes_MERGE_VALUES(SDNode *N, unsigned ResNo);
243 SDValue PromoteIntRes_AssertSext(SDNode *N);
244 SDValue PromoteIntRes_AssertZext(SDNode *N);
245 SDValue PromoteIntRes_Atomic0(AtomicSDNode *N);
246 SDValue PromoteIntRes_Atomic1(AtomicSDNode *N);
247 SDValue PromoteIntRes_AtomicCmpSwap(AtomicSDNode *N, unsigned ResNo);
248 SDValue PromoteIntRes_EXTRACT_SUBVECTOR(SDNode *N);
249 SDValue PromoteIntRes_VECTOR_SHUFFLE(SDNode *N);
250 SDValue PromoteIntRes_BUILD_VECTOR(SDNode *N);
251 SDValue PromoteIntRes_SCALAR_TO_VECTOR(SDNode *N);
252 SDValue PromoteIntRes_INSERT_VECTOR_ELT(SDNode *N);
253 SDValue PromoteIntRes_CONCAT_VECTORS(SDNode *N);
254 SDValue PromoteIntRes_BITCAST(SDNode *N);
255 SDValue PromoteIntRes_BSWAP(SDNode *N);
256 SDValue PromoteIntRes_BITREVERSE(SDNode *N);
257 SDValue PromoteIntRes_BUILD_PAIR(SDNode *N);
258 SDValue PromoteIntRes_Constant(SDNode *N);
259 SDValue PromoteIntRes_CONVERT_RNDSAT(SDNode *N);
260 SDValue PromoteIntRes_CTLZ(SDNode *N);
261 SDValue PromoteIntRes_CTPOP(SDNode *N);
262 SDValue PromoteIntRes_CTTZ(SDNode *N);
263 SDValue PromoteIntRes_EXTRACT_VECTOR_ELT(SDNode *N);
264 SDValue PromoteIntRes_FP_TO_XINT(SDNode *N);
265 SDValue PromoteIntRes_FP_TO_FP16(SDNode *N);
266 SDValue PromoteIntRes_INT_EXTEND(SDNode *N);
267 SDValue PromoteIntRes_LOAD(LoadSDNode *N);
268 SDValue PromoteIntRes_MLOAD(MaskedLoadSDNode *N);
269 SDValue PromoteIntRes_MGATHER(MaskedGatherSDNode *N);
270 SDValue PromoteIntRes_Overflow(SDNode *N);
271 SDValue PromoteIntRes_SADDSUBO(SDNode *N, unsigned ResNo);
272 SDValue PromoteIntRes_SDIV(SDNode *N);
273 SDValue PromoteIntRes_SELECT(SDNode *N);
274 SDValue PromoteIntRes_VSELECT(SDNode *N);
275 SDValue PromoteIntRes_SELECT_CC(SDNode *N);
276 SDValue PromoteIntRes_SETCC(SDNode *N);
277 SDValue PromoteIntRes_SHL(SDNode *N);
278 SDValue PromoteIntRes_SimpleIntBinOp(SDNode *N);
279 SDValue PromoteIntRes_SExtOrZExtIntBinOp(SDNode *N, bool Signed);
280 SDValue PromoteIntRes_SIGN_EXTEND_INREG(SDNode *N);
281 SDValue PromoteIntRes_SRA(SDNode *N);
282 SDValue PromoteIntRes_SRL(SDNode *N);
283 SDValue PromoteIntRes_TRUNCATE(SDNode *N);
284 SDValue PromoteIntRes_UADDSUBO(SDNode *N, unsigned ResNo);
285 SDValue PromoteIntRes_UDIV(SDNode *N);
286 SDValue PromoteIntRes_UNDEF(SDNode *N);
287 SDValue PromoteIntRes_VAARG(SDNode *N);
288 SDValue PromoteIntRes_XMULO(SDNode *N, unsigned ResNo);
290 // Integer Operand Promotion.
291 bool PromoteIntegerOperand(SDNode *N, unsigned OperandNo);
292 SDValue PromoteIntOp_ANY_EXTEND(SDNode *N);
293 SDValue PromoteIntOp_ATOMIC_STORE(AtomicSDNode *N);
294 SDValue PromoteIntOp_BITCAST(SDNode *N);
295 SDValue PromoteIntOp_BUILD_PAIR(SDNode *N);
296 SDValue PromoteIntOp_BR_CC(SDNode *N, unsigned OpNo);
297 SDValue PromoteIntOp_BRCOND(SDNode *N, unsigned OpNo);
298 SDValue PromoteIntOp_BUILD_VECTOR(SDNode *N);
299 SDValue PromoteIntOp_CONVERT_RNDSAT(SDNode *N);
300 SDValue PromoteIntOp_INSERT_VECTOR_ELT(SDNode *N, unsigned OpNo);
301 SDValue PromoteIntOp_EXTRACT_VECTOR_ELT(SDNode *N);
302 SDValue PromoteIntOp_EXTRACT_SUBVECTOR(SDNode *N);
303 SDValue PromoteIntOp_CONCAT_VECTORS(SDNode *N);
304 SDValue PromoteIntOp_SCALAR_TO_VECTOR(SDNode *N);
305 SDValue PromoteIntOp_SELECT(SDNode *N, unsigned OpNo);
306 SDValue PromoteIntOp_SELECT_CC(SDNode *N, unsigned OpNo);
307 SDValue PromoteIntOp_SETCC(SDNode *N, unsigned OpNo);
308 SDValue PromoteIntOp_Shift(SDNode *N);
309 SDValue PromoteIntOp_SIGN_EXTEND(SDNode *N);
310 SDValue PromoteIntOp_SINT_TO_FP(SDNode *N);
311 SDValue PromoteIntOp_STORE(StoreSDNode *N, unsigned OpNo);
312 SDValue PromoteIntOp_TRUNCATE(SDNode *N);
313 SDValue PromoteIntOp_UINT_TO_FP(SDNode *N);
314 SDValue PromoteIntOp_ZERO_EXTEND(SDNode *N);
315 SDValue PromoteIntOp_MSTORE(MaskedStoreSDNode *N, unsigned OpNo);
316 SDValue PromoteIntOp_MLOAD(MaskedLoadSDNode *N, unsigned OpNo);
317 SDValue PromoteIntOp_MSCATTER(MaskedScatterSDNode *N, unsigned OpNo);
318 SDValue PromoteIntOp_MGATHER(MaskedGatherSDNode *N, unsigned OpNo);
320 void PromoteSetCCOperands(SDValue &LHS,SDValue &RHS, ISD::CondCode Code);
322 //===--------------------------------------------------------------------===//
323 // Integer Expansion Support: LegalizeIntegerTypes.cpp
324 //===--------------------------------------------------------------------===//
326 /// GetExpandedInteger - Given a processed operand Op which was expanded into
327 /// two integers of half the size, this returns the two halves. The low bits
328 /// of Op are exactly equal to the bits of Lo; the high bits exactly equal Hi.
329 /// For example, if Op is an i64 which was expanded into two i32's, then this
330 /// method returns the two i32's, with Lo being equal to the lower 32 bits of
331 /// Op, and Hi being equal to the upper 32 bits.
332 void GetExpandedInteger(SDValue Op, SDValue &Lo, SDValue &Hi);
333 void SetExpandedInteger(SDValue Op, SDValue Lo, SDValue Hi);
335 // Integer Result Expansion.
336 void ExpandIntegerResult(SDNode *N, unsigned ResNo);
337 void ExpandIntRes_ANY_EXTEND (SDNode *N, SDValue &Lo, SDValue &Hi);
338 void ExpandIntRes_AssertSext (SDNode *N, SDValue &Lo, SDValue &Hi);
339 void ExpandIntRes_AssertZext (SDNode *N, SDValue &Lo, SDValue &Hi);
340 void ExpandIntRes_Constant (SDNode *N, SDValue &Lo, SDValue &Hi);
341 void ExpandIntRes_CTLZ (SDNode *N, SDValue &Lo, SDValue &Hi);
342 void ExpandIntRes_CTPOP (SDNode *N, SDValue &Lo, SDValue &Hi);
343 void ExpandIntRes_CTTZ (SDNode *N, SDValue &Lo, SDValue &Hi);
344 void ExpandIntRes_LOAD (LoadSDNode *N, SDValue &Lo, SDValue &Hi);
345 void ExpandIntRes_READCYCLECOUNTER (SDNode *N, SDValue &Lo, SDValue &Hi);
346 void ExpandIntRes_SIGN_EXTEND (SDNode *N, SDValue &Lo, SDValue &Hi);
347 void ExpandIntRes_SIGN_EXTEND_INREG (SDNode *N, SDValue &Lo, SDValue &Hi);
348 void ExpandIntRes_TRUNCATE (SDNode *N, SDValue &Lo, SDValue &Hi);
349 void ExpandIntRes_ZERO_EXTEND (SDNode *N, SDValue &Lo, SDValue &Hi);
350 void ExpandIntRes_FP_TO_SINT (SDNode *N, SDValue &Lo, SDValue &Hi);
351 void ExpandIntRes_FP_TO_UINT (SDNode *N, SDValue &Lo, SDValue &Hi);
353 void ExpandIntRes_Logical (SDNode *N, SDValue &Lo, SDValue &Hi);
354 void ExpandIntRes_ADDSUB (SDNode *N, SDValue &Lo, SDValue &Hi);
355 void ExpandIntRes_ADDSUBC (SDNode *N, SDValue &Lo, SDValue &Hi);
356 void ExpandIntRes_ADDSUBE (SDNode *N, SDValue &Lo, SDValue &Hi);
357 void ExpandIntRes_BITREVERSE (SDNode *N, SDValue &Lo, SDValue &Hi);
358 void ExpandIntRes_BSWAP (SDNode *N, SDValue &Lo, SDValue &Hi);
359 void ExpandIntRes_MUL (SDNode *N, SDValue &Lo, SDValue &Hi);
360 void ExpandIntRes_SDIV (SDNode *N, SDValue &Lo, SDValue &Hi);
361 void ExpandIntRes_SREM (SDNode *N, SDValue &Lo, SDValue &Hi);
362 void ExpandIntRes_UDIV (SDNode *N, SDValue &Lo, SDValue &Hi);
363 void ExpandIntRes_UREM (SDNode *N, SDValue &Lo, SDValue &Hi);
364 void ExpandIntRes_Shift (SDNode *N, SDValue &Lo, SDValue &Hi);
366 void ExpandIntRes_SADDSUBO (SDNode *N, SDValue &Lo, SDValue &Hi);
367 void ExpandIntRes_UADDSUBO (SDNode *N, SDValue &Lo, SDValue &Hi);
368 void ExpandIntRes_XMULO (SDNode *N, SDValue &Lo, SDValue &Hi);
370 void ExpandIntRes_ATOMIC_LOAD (SDNode *N, SDValue &Lo, SDValue &Hi);
372 void ExpandShiftByConstant(SDNode *N, const APInt &Amt,
373 SDValue &Lo, SDValue &Hi);
374 bool ExpandShiftWithKnownAmountBit(SDNode *N, SDValue &Lo, SDValue &Hi);
375 bool ExpandShiftWithUnknownAmountBit(SDNode *N, SDValue &Lo, SDValue &Hi);
377 // Integer Operand Expansion.
378 bool ExpandIntegerOperand(SDNode *N, unsigned OperandNo);
379 SDValue ExpandIntOp_BR_CC(SDNode *N);
380 SDValue ExpandIntOp_SELECT_CC(SDNode *N);
381 SDValue ExpandIntOp_SETCC(SDNode *N);
382 SDValue ExpandIntOp_SETCCE(SDNode *N);
383 SDValue ExpandIntOp_Shift(SDNode *N);
384 SDValue ExpandIntOp_SINT_TO_FP(SDNode *N);
385 SDValue ExpandIntOp_STORE(StoreSDNode *N, unsigned OpNo);
386 SDValue ExpandIntOp_TRUNCATE(SDNode *N);
387 SDValue ExpandIntOp_UINT_TO_FP(SDNode *N);
388 SDValue ExpandIntOp_RETURNADDR(SDNode *N);
389 SDValue ExpandIntOp_ATOMIC_STORE(SDNode *N);
391 void IntegerExpandSetCCOperands(SDValue &NewLHS, SDValue &NewRHS,
392 ISD::CondCode &CCCode, SDLoc dl);
394 //===--------------------------------------------------------------------===//
395 // Float to Integer Conversion Support: LegalizeFloatTypes.cpp
396 //===--------------------------------------------------------------------===//
398 /// GetSoftenedFloat - Given an operand Op of Float type, returns the integer
399 /// if the Op is not supported in target HW and converted to the integer.
400 /// The integer contains exactly the same bits as Op - only the type changed.
401 /// For example, if Op is an f32 which was softened to an i32, then this method
402 /// returns an i32, the bits of which coincide with those of Op.
403 /// If the Op can be efficiently supported in target HW or the operand must
404 /// stay in a register, the Op is not converted to an integer.
405 /// In that case, the given op is returned.
406 SDValue GetSoftenedFloat(SDValue Op) {
407 SDValue &SoftenedOp = SoftenedFloats[Op];
408 if (!SoftenedOp.getNode() &&
409 isSimpleLegalType(Op.getValueType()))
411 RemapValue(SoftenedOp);
412 assert(SoftenedOp.getNode() && "Operand wasn't converted to integer?");
415 void SetSoftenedFloat(SDValue Op, SDValue Result);
417 // Call ReplaceValueWith(SDValue(N, ResNo), Res) if necessary.
418 void ReplaceSoftenFloatResult(SDNode *N, unsigned ResNo, SDValue &NewRes) {
419 // When the result type can be kept in HW registers, the converted
420 // NewRes node could have the same type. We can save the effort in
421 // cloning every user of N in SoftenFloatOperand or other legalization functions,
422 // by calling ReplaceValueWith here to update all users.
423 if (NewRes.getNode() != N && isLegalInHWReg(N->getValueType(ResNo)))
424 ReplaceValueWith(SDValue(N, ResNo), NewRes);
427 // Convert Float Results to Integer for Non-HW-supported Operations.
428 bool SoftenFloatResult(SDNode *N, unsigned ResNo);
429 SDValue SoftenFloatRes_MERGE_VALUES(SDNode *N, unsigned ResNo);
430 SDValue SoftenFloatRes_BITCAST(SDNode *N, unsigned ResNo);
431 SDValue SoftenFloatRes_BUILD_PAIR(SDNode *N);
432 SDValue SoftenFloatRes_ConstantFP(SDNode *N, unsigned ResNo);
433 SDValue SoftenFloatRes_EXTRACT_VECTOR_ELT(SDNode *N);
434 SDValue SoftenFloatRes_FABS(SDNode *N, unsigned ResNo);
435 SDValue SoftenFloatRes_FMINNUM(SDNode *N);
436 SDValue SoftenFloatRes_FMAXNUM(SDNode *N);
437 SDValue SoftenFloatRes_FADD(SDNode *N);
438 SDValue SoftenFloatRes_FCEIL(SDNode *N);
439 SDValue SoftenFloatRes_FCOPYSIGN(SDNode *N, unsigned ResNo);
440 SDValue SoftenFloatRes_FCOS(SDNode *N);
441 SDValue SoftenFloatRes_FDIV(SDNode *N);
442 SDValue SoftenFloatRes_FEXP(SDNode *N);
443 SDValue SoftenFloatRes_FEXP2(SDNode *N);
444 SDValue SoftenFloatRes_FFLOOR(SDNode *N);
445 SDValue SoftenFloatRes_FLOG(SDNode *N);
446 SDValue SoftenFloatRes_FLOG2(SDNode *N);
447 SDValue SoftenFloatRes_FLOG10(SDNode *N);
448 SDValue SoftenFloatRes_FMA(SDNode *N);
449 SDValue SoftenFloatRes_FMUL(SDNode *N);
450 SDValue SoftenFloatRes_FNEARBYINT(SDNode *N);
451 SDValue SoftenFloatRes_FNEG(SDNode *N, unsigned ResNo);
452 SDValue SoftenFloatRes_FP_EXTEND(SDNode *N);
453 SDValue SoftenFloatRes_FP16_TO_FP(SDNode *N);
454 SDValue SoftenFloatRes_FP_ROUND(SDNode *N);
455 SDValue SoftenFloatRes_FPOW(SDNode *N);
456 SDValue SoftenFloatRes_FPOWI(SDNode *N);
457 SDValue SoftenFloatRes_FREM(SDNode *N);
458 SDValue SoftenFloatRes_FRINT(SDNode *N);
459 SDValue SoftenFloatRes_FROUND(SDNode *N);
460 SDValue SoftenFloatRes_FSIN(SDNode *N);
461 SDValue SoftenFloatRes_FSQRT(SDNode *N);
462 SDValue SoftenFloatRes_FSUB(SDNode *N);
463 SDValue SoftenFloatRes_FTRUNC(SDNode *N);
464 SDValue SoftenFloatRes_LOAD(SDNode *N, unsigned ResNo);
465 SDValue SoftenFloatRes_SELECT(SDNode *N, unsigned ResNo);
466 SDValue SoftenFloatRes_SELECT_CC(SDNode *N, unsigned ResNo);
467 SDValue SoftenFloatRes_UNDEF(SDNode *N);
468 SDValue SoftenFloatRes_VAARG(SDNode *N);
469 SDValue SoftenFloatRes_XINT_TO_FP(SDNode *N);
471 // Return true if we can skip softening the given operand or SDNode because
472 // it was soften before by SoftenFloatResult and references to the operand
473 // were replaced by ReplaceValueWith.
474 bool CanSkipSoftenFloatOperand(SDNode *N, unsigned OpNo);
476 // Convert Float Operand to Integer for Non-HW-supported Operations.
477 bool SoftenFloatOperand(SDNode *N, unsigned OpNo);
478 SDValue SoftenFloatOp_BITCAST(SDNode *N);
479 SDValue SoftenFloatOp_BR_CC(SDNode *N);
480 SDValue SoftenFloatOp_FP_EXTEND(SDNode *N);
481 SDValue SoftenFloatOp_FP_ROUND(SDNode *N);
482 SDValue SoftenFloatOp_FP_TO_XINT(SDNode *N);
483 SDValue SoftenFloatOp_SELECT_CC(SDNode *N);
484 SDValue SoftenFloatOp_SETCC(SDNode *N);
485 SDValue SoftenFloatOp_STORE(SDNode *N, unsigned OpNo);
487 //===--------------------------------------------------------------------===//
488 // Float Expansion Support: LegalizeFloatTypes.cpp
489 //===--------------------------------------------------------------------===//
491 /// GetExpandedFloat - Given a processed operand Op which was expanded into
492 /// two floating point values of half the size, this returns the two halves.
493 /// The low bits of Op are exactly equal to the bits of Lo; the high bits
494 /// exactly equal Hi. For example, if Op is a ppcf128 which was expanded
495 /// into two f64's, then this method returns the two f64's, with Lo being
496 /// equal to the lower 64 bits of Op, and Hi to the upper 64 bits.
497 void GetExpandedFloat(SDValue Op, SDValue &Lo, SDValue &Hi);
498 void SetExpandedFloat(SDValue Op, SDValue Lo, SDValue Hi);
500 // Float Result Expansion.
501 void ExpandFloatResult(SDNode *N, unsigned ResNo);
502 void ExpandFloatRes_ConstantFP(SDNode *N, SDValue &Lo, SDValue &Hi);
503 void ExpandFloatRes_FABS (SDNode *N, SDValue &Lo, SDValue &Hi);
504 void ExpandFloatRes_FMINNUM (SDNode *N, SDValue &Lo, SDValue &Hi);
505 void ExpandFloatRes_FMAXNUM (SDNode *N, SDValue &Lo, SDValue &Hi);
506 void ExpandFloatRes_FADD (SDNode *N, SDValue &Lo, SDValue &Hi);
507 void ExpandFloatRes_FCEIL (SDNode *N, SDValue &Lo, SDValue &Hi);
508 void ExpandFloatRes_FCOPYSIGN (SDNode *N, SDValue &Lo, SDValue &Hi);
509 void ExpandFloatRes_FCOS (SDNode *N, SDValue &Lo, SDValue &Hi);
510 void ExpandFloatRes_FDIV (SDNode *N, SDValue &Lo, SDValue &Hi);
511 void ExpandFloatRes_FEXP (SDNode *N, SDValue &Lo, SDValue &Hi);
512 void ExpandFloatRes_FEXP2 (SDNode *N, SDValue &Lo, SDValue &Hi);
513 void ExpandFloatRes_FFLOOR (SDNode *N, SDValue &Lo, SDValue &Hi);
514 void ExpandFloatRes_FLOG (SDNode *N, SDValue &Lo, SDValue &Hi);
515 void ExpandFloatRes_FLOG2 (SDNode *N, SDValue &Lo, SDValue &Hi);
516 void ExpandFloatRes_FLOG10 (SDNode *N, SDValue &Lo, SDValue &Hi);
517 void ExpandFloatRes_FMA (SDNode *N, SDValue &Lo, SDValue &Hi);
518 void ExpandFloatRes_FMUL (SDNode *N, SDValue &Lo, SDValue &Hi);
519 void ExpandFloatRes_FNEARBYINT(SDNode *N, SDValue &Lo, SDValue &Hi);
520 void ExpandFloatRes_FNEG (SDNode *N, SDValue &Lo, SDValue &Hi);
521 void ExpandFloatRes_FP_EXTEND (SDNode *N, SDValue &Lo, SDValue &Hi);
522 void ExpandFloatRes_FPOW (SDNode *N, SDValue &Lo, SDValue &Hi);
523 void ExpandFloatRes_FPOWI (SDNode *N, SDValue &Lo, SDValue &Hi);
524 void ExpandFloatRes_FREM (SDNode *N, SDValue &Lo, SDValue &Hi);
525 void ExpandFloatRes_FRINT (SDNode *N, SDValue &Lo, SDValue &Hi);
526 void ExpandFloatRes_FROUND (SDNode *N, SDValue &Lo, SDValue &Hi);
527 void ExpandFloatRes_FSIN (SDNode *N, SDValue &Lo, SDValue &Hi);
528 void ExpandFloatRes_FSQRT (SDNode *N, SDValue &Lo, SDValue &Hi);
529 void ExpandFloatRes_FSUB (SDNode *N, SDValue &Lo, SDValue &Hi);
530 void ExpandFloatRes_FTRUNC (SDNode *N, SDValue &Lo, SDValue &Hi);
531 void ExpandFloatRes_LOAD (SDNode *N, SDValue &Lo, SDValue &Hi);
532 void ExpandFloatRes_XINT_TO_FP(SDNode *N, SDValue &Lo, SDValue &Hi);
534 // Float Operand Expansion.
535 bool ExpandFloatOperand(SDNode *N, unsigned OperandNo);
536 SDValue ExpandFloatOp_BR_CC(SDNode *N);
537 SDValue ExpandFloatOp_FCOPYSIGN(SDNode *N);
538 SDValue ExpandFloatOp_FP_ROUND(SDNode *N);
539 SDValue ExpandFloatOp_FP_TO_SINT(SDNode *N);
540 SDValue ExpandFloatOp_FP_TO_UINT(SDNode *N);
541 SDValue ExpandFloatOp_SELECT_CC(SDNode *N);
542 SDValue ExpandFloatOp_SETCC(SDNode *N);
543 SDValue ExpandFloatOp_STORE(SDNode *N, unsigned OpNo);
545 void FloatExpandSetCCOperands(SDValue &NewLHS, SDValue &NewRHS,
546 ISD::CondCode &CCCode, SDLoc dl);
549 //===--------------------------------------------------------------------===//
550 // Float promotion support: LegalizeFloatTypes.cpp
551 //===--------------------------------------------------------------------===//
553 SDValue GetPromotedFloat(SDValue Op) {
554 SDValue &PromotedOp = PromotedFloats[Op];
555 RemapValue(PromotedOp);
556 assert(PromotedOp.getNode() && "Operand wasn't promoted?");
559 void SetPromotedFloat(SDValue Op, SDValue Result);
561 void PromoteFloatResult(SDNode *N, unsigned ResNo);
562 SDValue PromoteFloatRes_BITCAST(SDNode *N);
563 SDValue PromoteFloatRes_BinOp(SDNode *N);
564 SDValue PromoteFloatRes_ConstantFP(SDNode *N);
565 SDValue PromoteFloatRes_EXTRACT_VECTOR_ELT(SDNode *N);
566 SDValue PromoteFloatRes_FCOPYSIGN(SDNode *N);
567 SDValue PromoteFloatRes_FMAD(SDNode *N);
568 SDValue PromoteFloatRes_FPOWI(SDNode *N);
569 SDValue PromoteFloatRes_FP_ROUND(SDNode *N);
570 SDValue PromoteFloatRes_LOAD(SDNode *N);
571 SDValue PromoteFloatRes_SELECT(SDNode *N);
572 SDValue PromoteFloatRes_SELECT_CC(SDNode *N);
573 SDValue PromoteFloatRes_UnaryOp(SDNode *N);
574 SDValue PromoteFloatRes_UNDEF(SDNode *N);
575 SDValue PromoteFloatRes_XINT_TO_FP(SDNode *N);
577 bool PromoteFloatOperand(SDNode *N, unsigned ResNo);
578 SDValue PromoteFloatOp_BITCAST(SDNode *N, unsigned OpNo);
579 SDValue PromoteFloatOp_FCOPYSIGN(SDNode *N, unsigned OpNo);
580 SDValue PromoteFloatOp_FP_EXTEND(SDNode *N, unsigned OpNo);
581 SDValue PromoteFloatOp_FP_TO_XINT(SDNode *N, unsigned OpNo);
582 SDValue PromoteFloatOp_STORE(SDNode *N, unsigned OpNo);
583 SDValue PromoteFloatOp_SELECT_CC(SDNode *N, unsigned OpNo);
584 SDValue PromoteFloatOp_SETCC(SDNode *N, unsigned OpNo);
586 //===--------------------------------------------------------------------===//
587 // Scalarization Support: LegalizeVectorTypes.cpp
588 //===--------------------------------------------------------------------===//
590 /// GetScalarizedVector - Given a processed one-element vector Op which was
591 /// scalarized to its element type, this returns the element. For example,
592 /// if Op is a v1i32, Op = < i32 val >, this method returns val, an i32.
593 SDValue GetScalarizedVector(SDValue Op) {
594 SDValue &ScalarizedOp = ScalarizedVectors[Op];
595 RemapValue(ScalarizedOp);
596 assert(ScalarizedOp.getNode() && "Operand wasn't scalarized?");
599 void SetScalarizedVector(SDValue Op, SDValue Result);
601 // Vector Result Scalarization: <1 x ty> -> ty.
602 void ScalarizeVectorResult(SDNode *N, unsigned OpNo);
603 SDValue ScalarizeVecRes_MERGE_VALUES(SDNode *N, unsigned ResNo);
604 SDValue ScalarizeVecRes_BinOp(SDNode *N);
605 SDValue ScalarizeVecRes_TernaryOp(SDNode *N);
606 SDValue ScalarizeVecRes_UnaryOp(SDNode *N);
607 SDValue ScalarizeVecRes_InregOp(SDNode *N);
609 SDValue ScalarizeVecRes_BITCAST(SDNode *N);
610 SDValue ScalarizeVecRes_BUILD_VECTOR(SDNode *N);
611 SDValue ScalarizeVecRes_CONVERT_RNDSAT(SDNode *N);
612 SDValue ScalarizeVecRes_EXTRACT_SUBVECTOR(SDNode *N);
613 SDValue ScalarizeVecRes_FP_ROUND(SDNode *N);
614 SDValue ScalarizeVecRes_FPOWI(SDNode *N);
615 SDValue ScalarizeVecRes_INSERT_VECTOR_ELT(SDNode *N);
616 SDValue ScalarizeVecRes_LOAD(LoadSDNode *N);
617 SDValue ScalarizeVecRes_SCALAR_TO_VECTOR(SDNode *N);
618 SDValue ScalarizeVecRes_VSELECT(SDNode *N);
619 SDValue ScalarizeVecRes_SELECT(SDNode *N);
620 SDValue ScalarizeVecRes_SELECT_CC(SDNode *N);
621 SDValue ScalarizeVecRes_SETCC(SDNode *N);
622 SDValue ScalarizeVecRes_UNDEF(SDNode *N);
623 SDValue ScalarizeVecRes_VECTOR_SHUFFLE(SDNode *N);
624 SDValue ScalarizeVecRes_VSETCC(SDNode *N);
626 // Vector Operand Scalarization: <1 x ty> -> ty.
627 bool ScalarizeVectorOperand(SDNode *N, unsigned OpNo);
628 SDValue ScalarizeVecOp_BITCAST(SDNode *N);
629 SDValue ScalarizeVecOp_UnaryOp(SDNode *N);
630 SDValue ScalarizeVecOp_CONCAT_VECTORS(SDNode *N);
631 SDValue ScalarizeVecOp_EXTRACT_VECTOR_ELT(SDNode *N);
632 SDValue ScalarizeVecOp_VSELECT(SDNode *N);
633 SDValue ScalarizeVecOp_STORE(StoreSDNode *N, unsigned OpNo);
634 SDValue ScalarizeVecOp_FP_ROUND(SDNode *N, unsigned OpNo);
636 //===--------------------------------------------------------------------===//
637 // Vector Splitting Support: LegalizeVectorTypes.cpp
638 //===--------------------------------------------------------------------===//
640 /// GetSplitVector - Given a processed vector Op which was split into vectors
641 /// of half the size, this method returns the halves. The first elements of
642 /// Op coincide with the elements of Lo; the remaining elements of Op coincide
643 /// with the elements of Hi: Op is what you would get by concatenating Lo and
644 /// Hi. For example, if Op is a v8i32 that was split into two v4i32's, then
645 /// this method returns the two v4i32's, with Lo corresponding to the first 4
646 /// elements of Op, and Hi to the last 4 elements.
647 void GetSplitVector(SDValue Op, SDValue &Lo, SDValue &Hi);
648 void SetSplitVector(SDValue Op, SDValue Lo, SDValue Hi);
650 // Vector Result Splitting: <128 x ty> -> 2 x <64 x ty>.
651 void SplitVectorResult(SDNode *N, unsigned OpNo);
652 void SplitVecRes_BinOp(SDNode *N, SDValue &Lo, SDValue &Hi);
653 void SplitVecRes_TernaryOp(SDNode *N, SDValue &Lo, SDValue &Hi);
654 void SplitVecRes_UnaryOp(SDNode *N, SDValue &Lo, SDValue &Hi);
655 void SplitVecRes_ExtendOp(SDNode *N, SDValue &Lo, SDValue &Hi);
656 void SplitVecRes_InregOp(SDNode *N, SDValue &Lo, SDValue &Hi);
658 void SplitVecRes_BITCAST(SDNode *N, SDValue &Lo, SDValue &Hi);
659 void SplitVecRes_BUILD_VECTOR(SDNode *N, SDValue &Lo, SDValue &Hi);
660 void SplitVecRes_CONCAT_VECTORS(SDNode *N, SDValue &Lo, SDValue &Hi);
661 void SplitVecRes_EXTRACT_SUBVECTOR(SDNode *N, SDValue &Lo, SDValue &Hi);
662 void SplitVecRes_INSERT_SUBVECTOR(SDNode *N, SDValue &Lo, SDValue &Hi);
663 void SplitVecRes_FPOWI(SDNode *N, SDValue &Lo, SDValue &Hi);
664 void SplitVecRes_FCOPYSIGN(SDNode *N, SDValue &Lo, SDValue &Hi);
665 void SplitVecRes_INSERT_VECTOR_ELT(SDNode *N, SDValue &Lo, SDValue &Hi);
666 void SplitVecRes_LOAD(LoadSDNode *N, SDValue &Lo, SDValue &Hi);
667 void SplitVecRes_MLOAD(MaskedLoadSDNode *N, SDValue &Lo, SDValue &Hi);
668 void SplitVecRes_MGATHER(MaskedGatherSDNode *N, SDValue &Lo, SDValue &Hi);
669 void SplitVecRes_SCALAR_TO_VECTOR(SDNode *N, SDValue &Lo, SDValue &Hi);
670 void SplitVecRes_SETCC(SDNode *N, SDValue &Lo, SDValue &Hi);
671 void SplitVecRes_VECTOR_SHUFFLE(ShuffleVectorSDNode *N, SDValue &Lo,
674 // Vector Operand Splitting: <128 x ty> -> 2 x <64 x ty>.
675 bool SplitVectorOperand(SDNode *N, unsigned OpNo);
676 SDValue SplitVecOp_VSELECT(SDNode *N, unsigned OpNo);
677 SDValue SplitVecOp_UnaryOp(SDNode *N);
678 SDValue SplitVecOp_TruncateHelper(SDNode *N);
680 SDValue SplitVecOp_BITCAST(SDNode *N);
681 SDValue SplitVecOp_EXTRACT_SUBVECTOR(SDNode *N);
682 SDValue SplitVecOp_EXTRACT_VECTOR_ELT(SDNode *N);
683 SDValue SplitVecOp_STORE(StoreSDNode *N, unsigned OpNo);
684 SDValue SplitVecOp_MSTORE(MaskedStoreSDNode *N, unsigned OpNo);
685 SDValue SplitVecOp_MSCATTER(MaskedScatterSDNode *N, unsigned OpNo);
686 SDValue SplitVecOp_MGATHER(MaskedGatherSDNode *N, unsigned OpNo);
687 SDValue SplitVecOp_CONCAT_VECTORS(SDNode *N);
688 SDValue SplitVecOp_VSETCC(SDNode *N);
689 SDValue SplitVecOp_FP_ROUND(SDNode *N);
690 SDValue SplitVecOp_FCOPYSIGN(SDNode *N);
692 //===--------------------------------------------------------------------===//
693 // Vector Widening Support: LegalizeVectorTypes.cpp
694 //===--------------------------------------------------------------------===//
696 /// GetWidenedVector - Given a processed vector Op which was widened into a
697 /// larger vector, this method returns the larger vector. The elements of
698 /// the returned vector consist of the elements of Op followed by elements
699 /// containing rubbish. For example, if Op is a v2i32 that was widened to a
700 /// v4i32, then this method returns a v4i32 for which the first two elements
701 /// are the same as those of Op, while the last two elements contain rubbish.
702 SDValue GetWidenedVector(SDValue Op) {
703 SDValue &WidenedOp = WidenedVectors[Op];
704 RemapValue(WidenedOp);
705 assert(WidenedOp.getNode() && "Operand wasn't widened?");
708 void SetWidenedVector(SDValue Op, SDValue Result);
710 // Widen Vector Result Promotion.
711 void WidenVectorResult(SDNode *N, unsigned ResNo);
712 SDValue WidenVecRes_MERGE_VALUES(SDNode* N, unsigned ResNo);
713 SDValue WidenVecRes_BITCAST(SDNode* N);
714 SDValue WidenVecRes_BUILD_VECTOR(SDNode* N);
715 SDValue WidenVecRes_CONCAT_VECTORS(SDNode* N);
716 SDValue WidenVecRes_CONVERT_RNDSAT(SDNode* N);
717 SDValue WidenVecRes_EXTRACT_SUBVECTOR(SDNode* N);
718 SDValue WidenVecRes_INSERT_VECTOR_ELT(SDNode* N);
719 SDValue WidenVecRes_LOAD(SDNode* N);
720 SDValue WidenVecRes_MLOAD(MaskedLoadSDNode* N);
721 SDValue WidenVecRes_MGATHER(MaskedGatherSDNode* N);
722 SDValue WidenVecRes_SCALAR_TO_VECTOR(SDNode* N);
723 SDValue WidenVecRes_SELECT(SDNode* N);
724 SDValue WidenVecRes_SELECT_CC(SDNode* N);
725 SDValue WidenVecRes_SETCC(SDNode* N);
726 SDValue WidenVecRes_UNDEF(SDNode *N);
727 SDValue WidenVecRes_VECTOR_SHUFFLE(ShuffleVectorSDNode *N);
728 SDValue WidenVecRes_VSETCC(SDNode* N);
730 SDValue WidenVecRes_Ternary(SDNode *N);
731 SDValue WidenVecRes_Binary(SDNode *N);
732 SDValue WidenVecRes_BinaryCanTrap(SDNode *N);
733 SDValue WidenVecRes_Convert(SDNode *N);
734 SDValue WidenVecRes_FCOPYSIGN(SDNode *N);
735 SDValue WidenVecRes_POWI(SDNode *N);
736 SDValue WidenVecRes_Shift(SDNode *N);
737 SDValue WidenVecRes_Unary(SDNode *N);
738 SDValue WidenVecRes_InregOp(SDNode *N);
740 // Widen Vector Operand.
741 bool WidenVectorOperand(SDNode *N, unsigned OpNo);
742 SDValue WidenVecOp_BITCAST(SDNode *N);
743 SDValue WidenVecOp_CONCAT_VECTORS(SDNode *N);
744 SDValue WidenVecOp_EXTEND(SDNode *N);
745 SDValue WidenVecOp_EXTRACT_VECTOR_ELT(SDNode *N);
746 SDValue WidenVecOp_EXTRACT_SUBVECTOR(SDNode *N);
747 SDValue WidenVecOp_STORE(SDNode* N);
748 SDValue WidenVecOp_MSTORE(SDNode* N, unsigned OpNo);
749 SDValue WidenVecOp_MSCATTER(SDNode* N, unsigned OpNo);
750 SDValue WidenVecOp_SETCC(SDNode* N);
752 SDValue WidenVecOp_Convert(SDNode *N);
753 SDValue WidenVecOp_FCOPYSIGN(SDNode *N);
755 //===--------------------------------------------------------------------===//
756 // Vector Widening Utilities Support: LegalizeVectorTypes.cpp
757 //===--------------------------------------------------------------------===//
759 /// Helper GenWidenVectorLoads - Helper function to generate a set of
760 /// loads to load a vector with a resulting wider type. It takes
761 /// LdChain: list of chains for the load to be generated.
762 /// Ld: load to widen
763 SDValue GenWidenVectorLoads(SmallVectorImpl<SDValue> &LdChain,
766 /// GenWidenVectorExtLoads - Helper function to generate a set of extension
767 /// loads to load a ector with a resulting wider type. It takes
768 /// LdChain: list of chains for the load to be generated.
769 /// Ld: load to widen
770 /// ExtType: extension element type
771 SDValue GenWidenVectorExtLoads(SmallVectorImpl<SDValue> &LdChain,
772 LoadSDNode *LD, ISD::LoadExtType ExtType);
774 /// Helper genWidenVectorStores - Helper function to generate a set of
775 /// stores to store a widen vector into non-widen memory
776 /// StChain: list of chains for the stores we have generated
777 /// ST: store of a widen value
778 void GenWidenVectorStores(SmallVectorImpl<SDValue> &StChain, StoreSDNode *ST);
780 /// Helper genWidenVectorTruncStores - Helper function to generate a set of
781 /// stores to store a truncate widen vector into non-widen memory
782 /// StChain: list of chains for the stores we have generated
783 /// ST: store of a widen value
784 void GenWidenVectorTruncStores(SmallVectorImpl<SDValue> &StChain,
787 /// Modifies a vector input (widen or narrows) to a vector of NVT. The
788 /// input vector must have the same element type as NVT.
789 /// When FillWithZeroes is "on" the vector will be widened with
791 /// By default, the vector will be widened with undefined values.
792 SDValue ModifyToType(SDValue InOp, EVT NVT, bool FillWithZeroes = false);
794 //===--------------------------------------------------------------------===//
795 // Generic Splitting: LegalizeTypesGeneric.cpp
796 //===--------------------------------------------------------------------===//
798 // Legalization methods which only use that the illegal type is split into two
799 // not necessarily identical types. As such they can be used for splitting
800 // vectors and expanding integers and floats.
802 void GetSplitOp(SDValue Op, SDValue &Lo, SDValue &Hi) {
803 if (Op.getValueType().isVector())
804 GetSplitVector(Op, Lo, Hi);
805 else if (Op.getValueType().isInteger())
806 GetExpandedInteger(Op, Lo, Hi);
808 GetExpandedFloat(Op, Lo, Hi);
811 /// GetPairElements - Use ISD::EXTRACT_ELEMENT nodes to extract the low and
812 /// high parts of the given value.
813 void GetPairElements(SDValue Pair, SDValue &Lo, SDValue &Hi);
815 // Generic Result Splitting.
816 void SplitRes_MERGE_VALUES(SDNode *N, unsigned ResNo,
817 SDValue &Lo, SDValue &Hi);
818 void SplitRes_SELECT (SDNode *N, SDValue &Lo, SDValue &Hi);
819 void SplitRes_SELECT_CC (SDNode *N, SDValue &Lo, SDValue &Hi);
820 void SplitRes_UNDEF (SDNode *N, SDValue &Lo, SDValue &Hi);
822 //===--------------------------------------------------------------------===//
823 // Generic Expansion: LegalizeTypesGeneric.cpp
824 //===--------------------------------------------------------------------===//
826 // Legalization methods which only use that the illegal type is split into two
827 // identical types of half the size, and that the Lo/Hi part is stored first
828 // in memory on little/big-endian machines, followed by the Hi/Lo part. As
829 // such they can be used for expanding integers and floats.
831 void GetExpandedOp(SDValue Op, SDValue &Lo, SDValue &Hi) {
832 if (Op.getValueType().isInteger())
833 GetExpandedInteger(Op, Lo, Hi);
835 GetExpandedFloat(Op, Lo, Hi);
839 /// This function will split the integer \p Op into \p NumElements
840 /// operations of type \p EltVT and store them in \p Ops.
841 void IntegerToVector(SDValue Op, unsigned NumElements,
842 SmallVectorImpl<SDValue> &Ops, EVT EltVT);
844 // Generic Result Expansion.
845 void ExpandRes_MERGE_VALUES (SDNode *N, unsigned ResNo,
846 SDValue &Lo, SDValue &Hi);
847 void ExpandRes_BITCAST (SDNode *N, SDValue &Lo, SDValue &Hi);
848 void ExpandRes_BUILD_PAIR (SDNode *N, SDValue &Lo, SDValue &Hi);
849 void ExpandRes_EXTRACT_ELEMENT (SDNode *N, SDValue &Lo, SDValue &Hi);
850 void ExpandRes_EXTRACT_VECTOR_ELT(SDNode *N, SDValue &Lo, SDValue &Hi);
851 void ExpandRes_NormalLoad (SDNode *N, SDValue &Lo, SDValue &Hi);
852 void ExpandRes_VAARG (SDNode *N, SDValue &Lo, SDValue &Hi);
854 // Generic Operand Expansion.
855 SDValue ExpandOp_BITCAST (SDNode *N);
856 SDValue ExpandOp_BUILD_VECTOR (SDNode *N);
857 SDValue ExpandOp_EXTRACT_ELEMENT (SDNode *N);
858 SDValue ExpandOp_INSERT_VECTOR_ELT(SDNode *N);
859 SDValue ExpandOp_SCALAR_TO_VECTOR (SDNode *N);
860 SDValue ExpandOp_NormalStore (SDNode *N, unsigned OpNo);
863 } // end namespace llvm.