1//===-- LegalizeTypes.h - DAG Type Legalizer class definition ---*- C++ -*-===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8//
9// This file defines the DAGTypeLegalizer class. This is a private interface
10// shared between the code that implements the SelectionDAG::LegalizeTypes
11// method.
12//
13//===----------------------------------------------------------------------===//
14
15#ifndef LLVM_LIB_CODEGEN_SELECTIONDAG_LEGALIZETYPES_H
16#define LLVM_LIB_CODEGEN_SELECTIONDAG_LEGALIZETYPES_H
17
18#include "MatchContext.h"
19#include "llvm/ADT/DenseMap.h"
20#include "llvm/CodeGen/SelectionDAG.h"
21#include "llvm/CodeGen/TargetLowering.h"
22#include "llvm/Support/Compiler.h"
23
24namespace llvm {
25
26//===----------------------------------------------------------------------===//
27/// This takes an arbitrary SelectionDAG as input and hacks on it until only
28/// value types the target machine can handle are left. This involves promoting
29/// small sizes to large sizes or splitting up large values into small values.
30///
31class LLVM_LIBRARY_VISIBILITY DAGTypeLegalizer {
32 const TargetLowering &TLI;
33 SelectionDAG &DAG;
34public:
35 /// This pass uses the NodeId on the SDNodes to hold information about the
36 /// state of the node. The enum has all the values.
37 enum NodeIdFlags {
38 /// All operands have been processed, so this node is ready to be handled.
39 ReadyToProcess = 0,
40
41 /// This is a new node, not before seen, that was created in the process of
42 /// legalizing some other node.
43 NewNode = -1,
44
45 /// This node's ID needs to be set to the number of its unprocessed
46 /// operands.
47 Unanalyzed = -2,
48
49 /// This is a node that has already been processed.
50 Processed = -3
51
52 // 1+ - This is a node which has this many unprocessed operands.
53 };
54private:
55
56 /// This is a bitvector that contains two bits for each simple value type,
57 /// where the two bits correspond to the LegalizeAction enum from
58 /// TargetLowering. This can be queried with "getTypeAction(VT)".
59 TargetLowering::ValueTypeActionImpl ValueTypeActions;
60
61 /// Return how we should legalize values of this type.
62 TargetLowering::LegalizeTypeAction getTypeAction(EVT VT) const {
63 return TLI.getTypeAction(Context&: *DAG.getContext(), VT);
64 }
65
66 /// Return true if this type is legal on this target.
67 bool isTypeLegal(EVT VT) const {
68 return TLI.getTypeAction(Context&: *DAG.getContext(), VT) == TargetLowering::TypeLegal;
69 }
70
71 /// Return true if this is a simple legal type.
72 bool isSimpleLegalType(EVT VT) const {
73 return VT.isSimple() && TLI.isTypeLegal(VT);
74 }
75
76 EVT getSetCCResultType(EVT VT) const {
77 return TLI.getSetCCResultType(DL: DAG.getDataLayout(), Context&: *DAG.getContext(), VT);
78 }
79
80 /// Pretend all of this node's results are legal.
81 bool IgnoreNodeResults(SDNode *N) const {
82 return N->getOpcode() == ISD::TargetConstant ||
83 N->getOpcode() == ISD::Register;
84 }
85
86 // Bijection from SDValue to unique id. As each created node gets a
87 // new id we do not need to worry about reuse expunging. Should we
88 // run out of ids, we can do a one time expensive compactifcation.
89 typedef unsigned TableId;
90
91 TableId NextValueId = 1;
92
93 SmallDenseMap<SDValue, TableId, 8> ValueToIdMap;
94 SmallDenseMap<TableId, SDValue, 8> IdToValueMap;
95
96 /// For integer nodes that are below legal width, this map indicates what
97 /// promoted value to use.
98 SmallDenseMap<TableId, TableId, 8> PromotedIntegers;
99
100 /// For integer nodes that need to be expanded this map indicates which
101 /// operands are the expanded version of the input.
102 SmallDenseMap<TableId, std::pair<TableId, TableId>, 8> ExpandedIntegers;
103
104 /// For floating-point nodes converted to integers of the same size, this map
105 /// indicates the converted value to use.
106 SmallDenseMap<TableId, TableId, 8> SoftenedFloats;
107
108 /// For floating-point nodes that have a smaller precision than the smallest
109 /// supported precision, this map indicates what promoted value to use.
110 SmallDenseMap<TableId, TableId, 8> PromotedFloats;
111
112 /// For floating-point nodes that have a smaller precision than the smallest
113 /// supported precision, this map indicates the converted value to use.
114 SmallDenseMap<TableId, TableId, 8> SoftPromotedHalfs;
115
116 /// For float nodes that need to be expanded this map indicates which operands
117 /// are the expanded version of the input.
118 SmallDenseMap<TableId, std::pair<TableId, TableId>, 8> ExpandedFloats;
119
120 /// For nodes that are <1 x ty>, this map indicates the scalar value of type
121 /// 'ty' to use.
122 SmallDenseMap<TableId, TableId, 8> ScalarizedVectors;
123
124 /// For nodes that need to be split this map indicates which operands are the
125 /// expanded version of the input.
126 SmallDenseMap<TableId, std::pair<TableId, TableId>, 8> SplitVectors;
127
128 /// For vector nodes that need to be widened, indicates the widened value to
129 /// use.
130 SmallDenseMap<TableId, TableId, 8> WidenedVectors;
131
132 /// For values that have been replaced with another, indicates the replacement
133 /// value to use.
134 SmallDenseMap<TableId, TableId, 8> ReplacedValues;
135
136 /// This defines a worklist of nodes to process. In order to be pushed onto
137 /// this worklist, all operands of a node must have already been processed.
138 SmallVector<SDNode*, 128> Worklist;
139
140 TableId getTableId(SDValue V) {
141 assert(V.getNode() && "Getting TableId on SDValue()");
142
143 auto I = ValueToIdMap.find(Val: V);
144 if (I != ValueToIdMap.end()) {
145 // replace if there's been a shift.
146 RemapId(Id&: I->second);
147 assert(I->second && "All Ids should be nonzero");
148 return I->second;
149 }
150 // Add if it's not there.
151 ValueToIdMap.insert(KV: std::make_pair(x&: V, y&: NextValueId));
152 IdToValueMap.insert(KV: std::make_pair(x&: NextValueId, y&: V));
153 ++NextValueId;
154 assert(NextValueId != 0 &&
155 "Ran out of Ids. Increase id type size or add compactification");
156 return NextValueId - 1;
157 }
158
159 const SDValue &getSDValue(TableId &Id) {
160 RemapId(Id);
161 assert(Id && "TableId should be non-zero");
162 auto I = IdToValueMap.find(Val: Id);
163 assert(I != IdToValueMap.end() && "cannot find Id in map");
164 return I->second;
165 }
166
167public:
168 explicit DAGTypeLegalizer(SelectionDAG &dag)
169 : TLI(dag.getTargetLoweringInfo()), DAG(dag),
170 ValueTypeActions(TLI.getValueTypeActions()) {
171 }
172
173 /// This is the main entry point for the type legalizer. This does a
174 /// top-down traversal of the dag, legalizing types as it goes. Returns
175 /// "true" if it made any changes.
176 bool run();
177
178 void NoteDeletion(SDNode *Old, SDNode *New) {
179 assert(Old != New && "node replaced with self");
180 for (unsigned i = 0, e = Old->getNumValues(); i != e; ++i) {
181 TableId NewId = getTableId(V: SDValue(New, i));
182 TableId OldId = getTableId(V: SDValue(Old, i));
183
184 if (OldId != NewId) {
185 ReplacedValues[OldId] = NewId;
186
187 // Delete Node from tables. We cannot do this when OldId == NewId,
188 // because NewId can still have table references to it in
189 // ReplacedValues.
190 IdToValueMap.erase(Val: OldId);
191 PromotedIntegers.erase(Val: OldId);
192 ExpandedIntegers.erase(Val: OldId);
193 SoftenedFloats.erase(Val: OldId);
194 PromotedFloats.erase(Val: OldId);
195 SoftPromotedHalfs.erase(Val: OldId);
196 ExpandedFloats.erase(Val: OldId);
197 ScalarizedVectors.erase(Val: OldId);
198 SplitVectors.erase(Val: OldId);
199 WidenedVectors.erase(Val: OldId);
200 }
201
202 ValueToIdMap.erase(Val: SDValue(Old, i));
203 }
204 }
205
206 SelectionDAG &getDAG() const { return DAG; }
207
208private:
209 SDNode *AnalyzeNewNode(SDNode *N);
210 void AnalyzeNewValue(SDValue &Val);
211 void PerformExpensiveChecks();
212 void RemapId(TableId &Id);
213 void RemapValue(SDValue &V);
214
215 // Common routines.
216 SDValue BitConvertToInteger(SDValue Op);
217 SDValue BitConvertVectorToIntegerVector(SDValue Op);
218 SDValue CreateStackStoreLoad(SDValue Op, EVT DestVT);
219 bool CustomLowerNode(SDNode *N, EVT VT, bool LegalizeResult);
220 bool CustomWidenLowerNode(SDNode *N, EVT VT);
221
222 /// Replace each result of the given MERGE_VALUES node with the corresponding
223 /// input operand, except for the result 'ResNo', for which the corresponding
224 /// input operand is returned.
225 SDValue DisintegrateMERGE_VALUES(SDNode *N, unsigned ResNo);
226
227 SDValue JoinIntegers(SDValue Lo, SDValue Hi);
228
229 std::pair<SDValue, SDValue> ExpandAtomic(SDNode *Node);
230
231 SDValue PromoteTargetBoolean(SDValue Bool, EVT ValVT);
232
233 void ReplaceValueWith(SDValue From, SDValue To);
234 void SplitInteger(SDValue Op, SDValue &Lo, SDValue &Hi);
235 void SplitInteger(SDValue Op, EVT LoVT, EVT HiVT,
236 SDValue &Lo, SDValue &Hi);
237
238 //===--------------------------------------------------------------------===//
239 // Integer Promotion Support: LegalizeIntegerTypes.cpp
240 //===--------------------------------------------------------------------===//
241
242 /// Given a processed operand Op which was promoted to a larger integer type,
243 /// this returns the promoted value. The low bits of the promoted value
244 /// corresponding to the original type are exactly equal to Op.
245 /// The extra bits contain rubbish, so the promoted value may need to be zero-
246 /// or sign-extended from the original type before it is usable (the helpers
247 /// SExtPromotedInteger and ZExtPromotedInteger can do this for you).
248 /// For example, if Op is an i16 and was promoted to an i32, then this method
249 /// returns an i32, the lower 16 bits of which coincide with Op, and the upper
250 /// 16 bits of which contain rubbish.
251 SDValue GetPromotedInteger(SDValue Op) {
252 TableId &PromotedId = PromotedIntegers[getTableId(V: Op)];
253 SDValue PromotedOp = getSDValue(Id&: PromotedId);
254 assert(PromotedOp.getNode() && "Operand wasn't promoted?");
255 return PromotedOp;
256 }
257 void SetPromotedInteger(SDValue Op, SDValue Result);
258
259 /// Get a promoted operand and sign extend it to the final size.
260 SDValue SExtPromotedInteger(SDValue Op) {
261 EVT OldVT = Op.getValueType();
262 SDLoc dl(Op);
263 Op = GetPromotedInteger(Op);
264 return DAG.getNode(Opcode: ISD::SIGN_EXTEND_INREG, DL: dl, VT: Op.getValueType(), N1: Op,
265 N2: DAG.getValueType(OldVT));
266 }
267
268 /// Get a promoted operand and zero extend it to the final size.
269 SDValue ZExtPromotedInteger(SDValue Op) {
270 EVT OldVT = Op.getValueType();
271 SDLoc dl(Op);
272 Op = GetPromotedInteger(Op);
273 return DAG.getZeroExtendInReg(Op, DL: dl, VT: OldVT);
274 }
275
276 // Promote the given operand V (vector or scalar) according to N's specific
277 // reduction kind. N must be an integer VECREDUCE_* or VP_REDUCE_*. Returns
278 // the nominal extension opcode (ISD::(ANY|ZERO|SIGN)_EXTEND) and the
279 // promoted value.
280 SDValue PromoteIntOpVectorReduction(SDNode *N, SDValue V);
281
282 // Integer Result Promotion.
283 void PromoteIntegerResult(SDNode *N, unsigned ResNo);
284 SDValue PromoteIntRes_MERGE_VALUES(SDNode *N, unsigned ResNo);
285 SDValue PromoteIntRes_AssertSext(SDNode *N);
286 SDValue PromoteIntRes_AssertZext(SDNode *N);
287 SDValue PromoteIntRes_Atomic0(AtomicSDNode *N);
288 SDValue PromoteIntRes_Atomic1(AtomicSDNode *N);
289 SDValue PromoteIntRes_AtomicCmpSwap(AtomicSDNode *N, unsigned ResNo);
290 SDValue PromoteIntRes_EXTRACT_SUBVECTOR(SDNode *N);
291 SDValue PromoteIntRes_INSERT_SUBVECTOR(SDNode *N);
292 SDValue PromoteIntRes_VECTOR_REVERSE(SDNode *N);
293 SDValue PromoteIntRes_VECTOR_SHUFFLE(SDNode *N);
294 SDValue PromoteIntRes_VECTOR_SPLICE(SDNode *N);
295 SDValue PromoteIntRes_VECTOR_INTERLEAVE_DEINTERLEAVE(SDNode *N);
296 SDValue PromoteIntRes_BUILD_VECTOR(SDNode *N);
297 SDValue PromoteIntRes_ScalarOp(SDNode *N);
298 SDValue PromoteIntRes_STEP_VECTOR(SDNode *N);
299 SDValue PromoteIntRes_EXTEND_VECTOR_INREG(SDNode *N);
300 SDValue PromoteIntRes_INSERT_VECTOR_ELT(SDNode *N);
301 SDValue PromoteIntRes_CONCAT_VECTORS(SDNode *N);
302 SDValue PromoteIntRes_BITCAST(SDNode *N);
303 SDValue PromoteIntRes_BSWAP(SDNode *N);
304 SDValue PromoteIntRes_BITREVERSE(SDNode *N);
305 SDValue PromoteIntRes_BUILD_PAIR(SDNode *N);
306 SDValue PromoteIntRes_Constant(SDNode *N);
307 SDValue PromoteIntRes_CTLZ(SDNode *N);
308 SDValue PromoteIntRes_CTLS(SDNode *N);
309 SDValue PromoteIntRes_CTPOP_PARITY(SDNode *N);
310 SDValue PromoteIntRes_CTTZ(SDNode *N);
311 SDValue PromoteIntRes_VP_CttzElements(SDNode *N);
312 SDValue PromoteIntRes_EXTRACT_VECTOR_ELT(SDNode *N);
313 SDValue PromoteIntRes_FP_TO_XINT(SDNode *N);
314 SDValue PromoteIntRes_FP_TO_XINT_SAT(SDNode *N);
315 SDValue PromoteIntRes_FP_TO_FP16_BF16(SDNode *N);
316 SDValue PromoteIntRes_STRICT_FP_TO_FP16_BF16(SDNode *N);
317 SDValue PromoteIntRes_XRINT(SDNode *N);
318 SDValue PromoteIntRes_FREEZE(SDNode *N);
319 SDValue PromoteIntRes_INT_EXTEND(SDNode *N);
320 SDValue PromoteIntRes_LOAD(LoadSDNode *N);
321 SDValue PromoteIntRes_VP_LOAD(VPLoadSDNode *N);
322 SDValue PromoteIntRes_MLOAD(MaskedLoadSDNode *N);
323 SDValue PromoteIntRes_MGATHER(MaskedGatherSDNode *N);
324 SDValue PromoteIntRes_VECTOR_COMPRESS(SDNode *N);
325 SDValue PromoteIntRes_Overflow(SDNode *N);
326 SDValue PromoteIntRes_FFREXP(SDNode *N);
327 SDValue PromoteIntRes_SADDSUBO(SDNode *N, unsigned ResNo);
328 SDValue PromoteIntRes_CMP(SDNode *N);
329 SDValue PromoteIntRes_Select(SDNode *N);
330 SDValue PromoteIntRes_SELECT_CC(SDNode *N);
331 SDValue PromoteIntRes_SETCC(SDNode *N);
332 SDValue PromoteIntRes_SHL(SDNode *N);
333 SDValue PromoteIntRes_SimpleIntBinOp(SDNode *N);
334 SDValue PromoteIntRes_ZExtIntBinOp(SDNode *N);
335 SDValue PromoteIntRes_SExtIntBinOp(SDNode *N);
336 SDValue PromoteIntRes_UMINUMAX(SDNode *N);
337 SDValue PromoteIntRes_SIGN_EXTEND_INREG(SDNode *N);
338 SDValue PromoteIntRes_SRA(SDNode *N);
339 SDValue PromoteIntRes_SRL(SDNode *N);
340 SDValue PromoteIntRes_TRUNCATE(SDNode *N);
341 SDValue PromoteIntRes_UADDSUBO(SDNode *N, unsigned ResNo);
342 SDValue PromoteIntRes_UADDSUBO_CARRY(SDNode *N, unsigned ResNo);
343 SDValue PromoteIntRes_SADDSUBO_CARRY(SDNode *N, unsigned ResNo);
344 SDValue PromoteIntRes_UNDEF(SDNode *N);
345 SDValue PromoteIntRes_VAARG(SDNode *N);
346 SDValue PromoteIntRes_VSCALE(SDNode *N);
347 SDValue PromoteIntRes_XMULO(SDNode *N, unsigned ResNo);
348 template <class MatchContextClass>
349 SDValue PromoteIntRes_ADDSUBSHLSAT(SDNode *N);
350 SDValue PromoteIntRes_MULFIX(SDNode *N);
351 SDValue PromoteIntRes_DIVFIX(SDNode *N);
352 SDValue PromoteIntRes_GET_ROUNDING(SDNode *N);
353 SDValue PromoteIntRes_VECREDUCE(SDNode *N);
354 SDValue PromoteIntRes_VP_REDUCE(SDNode *N);
355 SDValue PromoteIntRes_ABS(SDNode *N);
356 SDValue PromoteIntRes_Rotate(SDNode *N);
357 SDValue PromoteIntRes_FunnelShift(SDNode *N);
358 SDValue PromoteIntRes_VPFunnelShift(SDNode *N);
359 SDValue PromoteIntRes_CLMUL(SDNode *N);
360 SDValue PromoteIntRes_IS_FPCLASS(SDNode *N);
361 SDValue PromoteIntRes_PATCHPOINT(SDNode *N);
362 SDValue PromoteIntRes_READ_REGISTER(SDNode *N);
363 SDValue PromoteIntRes_VECTOR_FIND_LAST_ACTIVE(SDNode *N);
364 SDValue PromoteIntRes_GET_ACTIVE_LANE_MASK(SDNode *N);
365 SDValue PromoteIntRes_PARTIAL_REDUCE_MLA(SDNode *N);
366 SDValue PromoteIntRes_LOOP_DEPENDENCE_MASK(SDNode *N);
367
368 // Integer Operand Promotion.
369 bool PromoteIntegerOperand(SDNode *N, unsigned OpNo);
370 SDValue PromoteIntOp_ANY_EXTEND(SDNode *N);
371 SDValue PromoteIntOp_ANY_EXTEND_VECTOR_INREG(SDNode *N);
372 SDValue PromoteIntOp_ATOMIC_STORE(AtomicSDNode *N);
373 SDValue PromoteIntOp_BITCAST(SDNode *N);
374 SDValue PromoteIntOp_BUILD_PAIR(SDNode *N);
375 SDValue PromoteIntOp_BR_CC(SDNode *N, unsigned OpNo);
376 SDValue PromoteIntOp_BRCOND(SDNode *N, unsigned OpNo);
377 SDValue PromoteIntOp_COND_LOOP(SDNode *N, unsigned OpNo);
378 SDValue PromoteIntOp_BUILD_VECTOR(SDNode *N);
379 SDValue PromoteIntOp_INSERT_VECTOR_ELT(SDNode *N, unsigned OpNo);
380 SDValue PromoteIntOp_EXTRACT_VECTOR_ELT(SDNode *N);
381 SDValue PromoteIntOp_EXTRACT_SUBVECTOR(SDNode *N);
382 SDValue PromoteIntOp_INSERT_SUBVECTOR(SDNode *N);
383 SDValue PromoteIntOp_FAKE_USE(SDNode *N);
384 SDValue PromoteIntOp_CONCAT_VECTORS(SDNode *N);
385 SDValue PromoteIntOp_ScalarOp(SDNode *N);
386 SDValue PromoteIntOp_SELECT(SDNode *N, unsigned OpNo);
387 SDValue PromoteIntOp_SELECT_CC(SDNode *N, unsigned OpNo);
388 SDValue PromoteIntOp_SETCC(SDNode *N, unsigned OpNo);
389 SDValue PromoteIntOp_Shift(SDNode *N);
390 SDValue PromoteIntOp_CMP(SDNode *N);
391 SDValue PromoteIntOp_FunnelShift(SDNode *N);
392 SDValue PromoteIntOp_SIGN_EXTEND(SDNode *N);
393 SDValue PromoteIntOp_VP_SIGN_EXTEND(SDNode *N);
394 SDValue PromoteIntOp_SINT_TO_FP(SDNode *N);
395 SDValue PromoteIntOp_STRICT_SINT_TO_FP(SDNode *N);
396 SDValue PromoteIntOp_STORE(StoreSDNode *N, unsigned OpNo);
397 SDValue PromoteIntOp_TRUNCATE(SDNode *N);
398 SDValue PromoteIntOp_UINT_TO_FP(SDNode *N);
399 SDValue PromoteIntOp_STRICT_UINT_TO_FP(SDNode *N);
400 SDValue PromoteIntOp_ZERO_EXTEND(SDNode *N);
401 SDValue PromoteIntOp_VP_ZERO_EXTEND(SDNode *N);
402 SDValue PromoteIntOp_MSTORE(MaskedStoreSDNode *N, unsigned OpNo);
403 SDValue PromoteIntOp_MLOAD(MaskedLoadSDNode *N, unsigned OpNo);
404 SDValue PromoteIntOp_MSCATTER(MaskedScatterSDNode *N, unsigned OpNo);
405 SDValue PromoteIntOp_MGATHER(MaskedGatherSDNode *N, unsigned OpNo);
406 SDValue PromoteIntOp_VECTOR_COMPRESS(SDNode *N, unsigned OpNo);
407 SDValue PromoteIntOp_FRAMERETURNADDR(SDNode *N);
408 SDValue PromoteIntOp_FIX(SDNode *N);
409 SDValue PromoteIntOp_ExpOp(SDNode *N);
410 SDValue PromoteIntOp_VECREDUCE(SDNode *N);
411 SDValue PromoteIntOp_VP_REDUCE(SDNode *N, unsigned OpNo);
412 SDValue PromoteIntOp_VP_STORE(VPStoreSDNode *N, unsigned OpNo);
413 SDValue PromoteIntOp_SET_ROUNDING(SDNode *N);
414 SDValue PromoteIntOp_STACKMAP(SDNode *N, unsigned OpNo);
415 SDValue PromoteIntOp_PATCHPOINT(SDNode *N, unsigned OpNo);
416 SDValue PromoteIntOp_WRITE_REGISTER(SDNode *N, unsigned OpNo);
417 SDValue PromoteIntOp_VP_STRIDED(SDNode *N, unsigned OpNo);
418 SDValue PromoteIntOp_VP_SPLICE(SDNode *N, unsigned OpNo);
419 SDValue PromoteIntOp_VECTOR_HISTOGRAM(SDNode *N, unsigned OpNo);
420 SDValue PromoteIntOp_VECTOR_FIND_LAST_ACTIVE(SDNode *N, unsigned OpNo);
421 SDValue PromoteIntOp_GET_ACTIVE_LANE_MASK(SDNode *N);
422 SDValue PromoteIntOp_PARTIAL_REDUCE_MLA(SDNode *N);
423 SDValue PromoteIntOp_LOOP_DEPENDENCE_MASK(SDNode *N, unsigned OpNo);
424
425 void SExtOrZExtPromotedOperands(SDValue &LHS, SDValue &RHS);
426 void PromoteSetCCOperands(SDValue &LHS,SDValue &RHS, ISD::CondCode Code);
427
428 //===--------------------------------------------------------------------===//
429 // Integer Expansion Support: LegalizeIntegerTypes.cpp
430 //===--------------------------------------------------------------------===//
431
432 /// Given a processed operand Op which was expanded into two integers of half
433 /// the size, this returns the two halves. The low bits of Op are exactly
434 /// equal to the bits of Lo; the high bits exactly equal Hi.
435 /// For example, if Op is an i64 which was expanded into two i32's, then this
436 /// method returns the two i32's, with Lo being equal to the lower 32 bits of
437 /// Op, and Hi being equal to the upper 32 bits.
438 void GetExpandedInteger(SDValue Op, SDValue &Lo, SDValue &Hi);
439 void SetExpandedInteger(SDValue Op, SDValue Lo, SDValue Hi);
440
441 // Integer Result Expansion.
442 void ExpandIntegerResult(SDNode *N, unsigned ResNo);
443 void ExpandIntRes_ANY_EXTEND (SDNode *N, SDValue &Lo, SDValue &Hi);
444 void ExpandIntRes_AssertSext (SDNode *N, SDValue &Lo, SDValue &Hi);
445 void ExpandIntRes_AssertZext (SDNode *N, SDValue &Lo, SDValue &Hi);
446 void ExpandIntRes_Constant (SDNode *N, SDValue &Lo, SDValue &Hi);
447 void ExpandIntRes_ABS (SDNode *N, SDValue &Lo, SDValue &Hi);
448 void ExpandIntRes_ABD (SDNode *N, SDValue &Lo, SDValue &Hi);
449 void ExpandIntRes_CTLZ (SDNode *N, SDValue &Lo, SDValue &Hi);
450 void ExpandIntRes_CTLS (SDNode *N, SDValue &Lo, SDValue &Hi);
451 void ExpandIntRes_CTPOP (SDNode *N, SDValue &Lo, SDValue &Hi);
452 void ExpandIntRes_CTTZ (SDNode *N, SDValue &Lo, SDValue &Hi);
453 void ExpandIntRes_LOAD (LoadSDNode *N, SDValue &Lo, SDValue &Hi);
454 void ExpandIntRes_READCOUNTER (SDNode *N, SDValue &Lo, SDValue &Hi);
455 void ExpandIntRes_SIGN_EXTEND (SDNode *N, SDValue &Lo, SDValue &Hi);
456 void ExpandIntRes_SIGN_EXTEND_INREG (SDNode *N, SDValue &Lo, SDValue &Hi);
457 void ExpandIntRes_TRUNCATE (SDNode *N, SDValue &Lo, SDValue &Hi);
458 void ExpandIntRes_ZERO_EXTEND (SDNode *N, SDValue &Lo, SDValue &Hi);
459 void ExpandIntRes_GET_ROUNDING (SDNode *N, SDValue &Lo, SDValue &Hi);
460 void ExpandIntRes_FP_TO_XINT (SDNode *N, SDValue &Lo, SDValue &Hi);
461 void ExpandIntRes_FP_TO_XINT_SAT (SDNode *N, SDValue &Lo, SDValue &Hi);
462 void ExpandIntRes_XROUND_XRINT (SDNode *N, SDValue &Lo, SDValue &Hi);
463
464 void ExpandIntRes_Logical (SDNode *N, SDValue &Lo, SDValue &Hi);
465 void ExpandIntRes_ADDSUB (SDNode *N, SDValue &Lo, SDValue &Hi);
466 void ExpandIntRes_ADDSUBC (SDNode *N, SDValue &Lo, SDValue &Hi);
467 void ExpandIntRes_ADDSUBE (SDNode *N, SDValue &Lo, SDValue &Hi);
468 void ExpandIntRes_UADDSUBO_CARRY (SDNode *N, SDValue &Lo, SDValue &Hi);
469 void ExpandIntRes_SADDSUBO_CARRY (SDNode *N, SDValue &Lo, SDValue &Hi);
470 void ExpandIntRes_BITREVERSE (SDNode *N, SDValue &Lo, SDValue &Hi);
471 void ExpandIntRes_BSWAP (SDNode *N, SDValue &Lo, SDValue &Hi);
472 void ExpandIntRes_PARITY (SDNode *N, SDValue &Lo, SDValue &Hi);
473 void ExpandIntRes_MUL (SDNode *N, SDValue &Lo, SDValue &Hi);
474 void ExpandIntRes_SDIV (SDNode *N, SDValue &Lo, SDValue &Hi);
475 void ExpandIntRes_SREM (SDNode *N, SDValue &Lo, SDValue &Hi);
476 void ExpandIntRes_UDIV (SDNode *N, SDValue &Lo, SDValue &Hi);
477 void ExpandIntRes_UREM (SDNode *N, SDValue &Lo, SDValue &Hi);
478 void ExpandIntRes_ShiftThroughStack (SDNode *N, SDValue &Lo, SDValue &Hi);
479 void ExpandIntRes_Shift (SDNode *N, SDValue &Lo, SDValue &Hi);
480
481 void ExpandIntRes_MINMAX (SDNode *N, SDValue &Lo, SDValue &Hi);
482
483 void ExpandIntRes_CMP (SDNode *N, SDValue &Lo, SDValue &Hi);
484 void ExpandIntRes_SETCC (SDNode *N, SDValue &Lo, SDValue &Hi);
485
486 void ExpandIntRes_SADDSUBO (SDNode *N, SDValue &Lo, SDValue &Hi);
487 void ExpandIntRes_UADDSUBO (SDNode *N, SDValue &Lo, SDValue &Hi);
488 void ExpandIntRes_XMULO (SDNode *N, SDValue &Lo, SDValue &Hi);
489 void ExpandIntRes_AVG (SDNode *N, SDValue &Lo, SDValue &Hi);
490 void ExpandIntRes_ADDSUBSAT (SDNode *N, SDValue &Lo, SDValue &Hi);
491 void ExpandIntRes_SHLSAT (SDNode *N, SDValue &Lo, SDValue &Hi);
492 void ExpandIntRes_MULFIX (SDNode *N, SDValue &Lo, SDValue &Hi);
493 void ExpandIntRes_DIVFIX (SDNode *N, SDValue &Lo, SDValue &Hi);
494
495 void ExpandIntRes_ATOMIC_LOAD (SDNode *N, SDValue &Lo, SDValue &Hi);
496 void ExpandIntRes_VECREDUCE (SDNode *N, SDValue &Lo, SDValue &Hi);
497
498 void ExpandIntRes_Rotate (SDNode *N, SDValue &Lo, SDValue &Hi);
499 void ExpandIntRes_FunnelShift (SDNode *N, SDValue &Lo, SDValue &Hi);
500 void ExpandIntRes_CLMUL(SDNode *N, SDValue &Lo, SDValue &Hi);
501
502 void ExpandIntRes_VSCALE (SDNode *N, SDValue &Lo, SDValue &Hi);
503 void ExpandIntRes_READ_REGISTER(SDNode *N, SDValue &Lo, SDValue &Hi);
504
505 void ExpandShiftByConstant(SDNode *N, const APInt &Amt,
506 SDValue &Lo, SDValue &Hi);
507 bool ExpandShiftWithKnownAmountBit(SDNode *N, SDValue &Lo, SDValue &Hi);
508 bool ExpandShiftWithUnknownAmountBit(SDNode *N, SDValue &Lo, SDValue &Hi);
509
510 // Integer Operand Expansion.
511 bool ExpandIntegerOperand(SDNode *N, unsigned OpNo);
512 SDValue ExpandIntOp_BR_CC(SDNode *N);
513 SDValue ExpandIntOp_SELECT_CC(SDNode *N);
514 SDValue ExpandIntOp_SETCC(SDNode *N);
515 SDValue ExpandIntOp_SETCCCARRY(SDNode *N);
516 SDValue ExpandIntOp_Shift(SDNode *N);
517 SDValue ExpandIntOp_CMP(SDNode *N);
518 SDValue ExpandIntOp_STORE(StoreSDNode *N, unsigned OpNo);
519 SDValue ExpandIntOp_TRUNCATE(SDNode *N);
520 SDValue ExpandIntOp_XINT_TO_FP(SDNode *N);
521 SDValue ExpandIntOp_RETURNADDR(SDNode *N);
522 SDValue ExpandIntOp_ATOMIC_STORE(SDNode *N);
523 SDValue ExpandIntOp_SPLAT_VECTOR(SDNode *N);
524 SDValue ExpandIntOp_STACKMAP(SDNode *N, unsigned OpNo);
525 SDValue ExpandIntOp_PATCHPOINT(SDNode *N, unsigned OpNo);
526 SDValue ExpandIntOp_VP_STRIDED(SDNode *N, unsigned OpNo);
527 SDValue ExpandIntOp_WRITE_REGISTER(SDNode *N, unsigned OpNo);
528
529 void IntegerExpandSetCCOperands(SDValue &NewLHS, SDValue &NewRHS,
530 ISD::CondCode &CCCode, const SDLoc &dl);
531
532 //===--------------------------------------------------------------------===//
533 // Float to Integer Conversion Support: LegalizeFloatTypes.cpp
534 //===--------------------------------------------------------------------===//
535
536 /// GetSoftenedFloat - Given a processed operand Op which was converted to an
537 /// integer of the same size, this returns the integer. The integer contains
538 /// exactly the same bits as Op - only the type changed. For example, if Op
539 /// is an f32 which was softened to an i32, then this method returns an i32,
540 /// the bits of which coincide with those of Op
541 SDValue GetSoftenedFloat(SDValue Op) {
542 TableId Id = getTableId(V: Op);
543 auto Iter = SoftenedFloats.find(Val: Id);
544 if (Iter == SoftenedFloats.end()) {
545 assert(isSimpleLegalType(Op.getValueType()) &&
546 "Operand wasn't converted to integer?");
547 return Op;
548 }
549 SDValue SoftenedOp = getSDValue(Id&: Iter->second);
550 assert(SoftenedOp.getNode() && "Unconverted op in SoftenedFloats?");
551 return SoftenedOp;
552 }
553 void SetSoftenedFloat(SDValue Op, SDValue Result);
554
555 // Convert Float Results to Integer.
556 void SoftenFloatResult(SDNode *N, unsigned ResNo);
557 SDValue SoftenFloatRes_Unary(SDNode *N, RTLIB::Libcall LC);
558 bool SoftenFloatRes_UnaryWithTwoFPResults(
559 SDNode *N, RTLIB::Libcall LC, std::optional<unsigned> CallRetResNo = {});
560 SDValue SoftenFloatRes_Binary(SDNode *N, RTLIB::Libcall LC);
561 SDValue SoftenFloatRes_MERGE_VALUES(SDNode *N, unsigned ResNo);
562 SDValue SoftenFloatRes_ARITH_FENCE(SDNode *N);
563 SDValue SoftenFloatRes_BITCAST(SDNode *N);
564 SDValue SoftenFloatRes_BUILD_PAIR(SDNode *N);
565 SDValue SoftenFloatRes_ConstantFP(SDNode *N);
566 SDValue SoftenFloatRes_EXTRACT_ELEMENT(SDNode *N);
567 SDValue SoftenFloatRes_EXTRACT_VECTOR_ELT(SDNode *N, unsigned ResNo);
568 SDValue SoftenFloatRes_FABS(SDNode *N);
569 SDValue SoftenFloatRes_FACOS(SDNode *N);
570 SDValue SoftenFloatRes_FASIN(SDNode *N);
571 SDValue SoftenFloatRes_FATAN(SDNode *N);
572 SDValue SoftenFloatRes_FATAN2(SDNode *N);
573 SDValue SoftenFloatRes_FCANONICALIZE(SDNode *N);
574 SDValue SoftenFloatRes_FMINNUM(SDNode *N);
575 SDValue SoftenFloatRes_FMAXNUM(SDNode *N);
576 SDValue SoftenFloatRes_FMINIMUMNUM(SDNode *N);
577 SDValue SoftenFloatRes_FMAXIMUMNUM(SDNode *N);
578 SDValue SoftenFloatRes_FMINIMUM(SDNode *N);
579 SDValue SoftenFloatRes_FMAXIMUM(SDNode *N);
580 SDValue SoftenFloatRes_FADD(SDNode *N);
581 SDValue SoftenFloatRes_FCBRT(SDNode *N);
582 SDValue SoftenFloatRes_FCEIL(SDNode *N);
583 SDValue SoftenFloatRes_FCOPYSIGN(SDNode *N);
584 SDValue SoftenFloatRes_FCOS(SDNode *N);
585 SDValue SoftenFloatRes_FCOSH(SDNode *N);
586 SDValue SoftenFloatRes_FDIV(SDNode *N);
587 SDValue SoftenFloatRes_FEXP(SDNode *N);
588 SDValue SoftenFloatRes_FEXP2(SDNode *N);
589 SDValue SoftenFloatRes_FEXP10(SDNode *N);
590 SDValue SoftenFloatRes_FFLOOR(SDNode *N);
591 SDValue SoftenFloatRes_FLOG(SDNode *N);
592 SDValue SoftenFloatRes_FLOG2(SDNode *N);
593 SDValue SoftenFloatRes_FLOG10(SDNode *N);
594 SDValue SoftenFloatRes_FMA(SDNode *N);
595 SDValue SoftenFloatRes_FMUL(SDNode *N);
596 SDValue SoftenFloatRes_FNEARBYINT(SDNode *N);
597 SDValue SoftenFloatRes_FNEG(SDNode *N);
598 SDValue SoftenFloatRes_FP_EXTEND(SDNode *N);
599 SDValue SoftenFloatRes_FP16_TO_FP(SDNode *N);
600 SDValue SoftenFloatRes_BF16_TO_FP(SDNode *N);
601 SDValue SoftenFloatRes_FP_ROUND(SDNode *N);
602 SDValue SoftenFloatRes_FPOW(SDNode *N);
603 SDValue SoftenFloatRes_ExpOp(SDNode *N);
604 SDValue SoftenFloatRes_FFREXP(SDNode *N);
605 SDValue SoftenFloatRes_FSINCOS(SDNode *N);
606 SDValue SoftenFloatRes_FMODF(SDNode *N);
607 SDValue SoftenFloatRes_FREEZE(SDNode *N);
608 SDValue SoftenFloatRes_FREM(SDNode *N);
609 SDValue SoftenFloatRes_FRINT(SDNode *N);
610 SDValue SoftenFloatRes_FROUND(SDNode *N);
611 SDValue SoftenFloatRes_FROUNDEVEN(SDNode *N);
612 SDValue SoftenFloatRes_FSIN(SDNode *N);
613 SDValue SoftenFloatRes_FSINH(SDNode *N);
614 SDValue SoftenFloatRes_FSQRT(SDNode *N);
615 SDValue SoftenFloatRes_FSUB(SDNode *N);
616 SDValue SoftenFloatRes_FTAN(SDNode *N);
617 SDValue SoftenFloatRes_FTANH(SDNode *N);
618 SDValue SoftenFloatRes_FTRUNC(SDNode *N);
619 SDValue SoftenFloatRes_LOAD(SDNode *N);
620 SDValue SoftenFloatRes_ATOMIC_LOAD(SDNode *N);
621 SDValue SoftenFloatRes_SELECT(SDNode *N);
622 SDValue SoftenFloatRes_SELECT_CC(SDNode *N);
623 SDValue SoftenFloatRes_UNDEF(SDNode *N);
624 SDValue SoftenFloatRes_VAARG(SDNode *N);
625 SDValue SoftenFloatRes_XINT_TO_FP(SDNode *N);
626 SDValue SoftenFloatRes_VECREDUCE(SDNode *N);
627 SDValue SoftenFloatRes_VECREDUCE_SEQ(SDNode *N);
628
629 // Convert Float Operand to Integer.
630 bool SoftenFloatOperand(SDNode *N, unsigned OpNo);
631 SDValue SoftenFloatOp_Unary(SDNode *N, RTLIB::Libcall LC);
632 SDValue SoftenFloatOp_BITCAST(SDNode *N);
633 SDValue SoftenFloatOp_BR_CC(SDNode *N);
634 SDValue SoftenFloatOp_FP_ROUND(SDNode *N);
635 SDValue SoftenFloatOp_FP_TO_XINT(SDNode *N);
636 SDValue SoftenFloatOp_FP_TO_XINT_SAT(SDNode *N);
637 SDValue SoftenFloatOp_LROUND(SDNode *N);
638 SDValue SoftenFloatOp_LLROUND(SDNode *N);
639 SDValue SoftenFloatOp_LRINT(SDNode *N);
640 SDValue SoftenFloatOp_LLRINT(SDNode *N);
641 SDValue SoftenFloatOp_SELECT_CC(SDNode *N);
642 SDValue SoftenFloatOp_SETCC(SDNode *N);
643 SDValue SoftenFloatOp_STORE(SDNode *N, unsigned OpNo);
644 SDValue SoftenFloatOp_ATOMIC_STORE(SDNode *N, unsigned OpNo);
645 SDValue SoftenFloatOp_FCOPYSIGN(SDNode *N);
646 SDValue SoftenFloatOp_FAKE_USE(SDNode *N);
647 SDValue SoftenFloatOp_STACKMAP(SDNode *N, unsigned OpNo);
648 SDValue SoftenFloatOp_PATCHPOINT(SDNode *N, unsigned OpNo);
649
650 //===--------------------------------------------------------------------===//
651 // Float Expansion Support: LegalizeFloatTypes.cpp
652 //===--------------------------------------------------------------------===//
653
654 /// Given a processed operand Op which was expanded into two floating-point
655 /// values of half the size, this returns the two halves.
656 /// The low bits of Op are exactly equal to the bits of Lo; the high bits
657 /// exactly equal Hi. For example, if Op is a ppcf128 which was expanded
658 /// into two f64's, then this method returns the two f64's, with Lo being
659 /// equal to the lower 64 bits of Op, and Hi to the upper 64 bits.
660 void GetExpandedFloat(SDValue Op, SDValue &Lo, SDValue &Hi);
661 void SetExpandedFloat(SDValue Op, SDValue Lo, SDValue Hi);
662
663 // Float Result Expansion.
664 void ExpandFloatResult(SDNode *N, unsigned ResNo);
665 void ExpandFloatRes_ConstantFP(SDNode *N, SDValue &Lo, SDValue &Hi);
666 void ExpandFloatRes_Unary(SDNode *N, RTLIB::Libcall LC,
667 SDValue &Lo, SDValue &Hi);
668 void ExpandFloatRes_Binary(SDNode *N, RTLIB::Libcall LC,
669 SDValue &Lo, SDValue &Hi);
670 void ExpandFloatRes_UnaryWithTwoFPResults(
671 SDNode *N, RTLIB::Libcall LC, std::optional<unsigned> CallRetResNo = {});
672
673 // clang-format off
674 void ExpandFloatRes_AssertNoFPClass(SDNode *N, SDValue &Lo, SDValue &Hi);
675 void ExpandFloatRes_FABS (SDNode *N, SDValue &Lo, SDValue &Hi);
676 void ExpandFloatRes_FACOS (SDNode *N, SDValue &Lo, SDValue &Hi);
677 void ExpandFloatRes_FASIN (SDNode *N, SDValue &Lo, SDValue &Hi);
678 void ExpandFloatRes_FATAN (SDNode *N, SDValue &Lo, SDValue &Hi);
679 void ExpandFloatRes_FATAN2 (SDNode *N, SDValue &Lo, SDValue &Hi);
680 void ExpandFloatRes_FMINNUM (SDNode *N, SDValue &Lo, SDValue &Hi);
681 void ExpandFloatRes_FMAXNUM (SDNode *N, SDValue &Lo, SDValue &Hi);
682 void ExpandFloatRes_FMINIMUMNUM(SDNode *N, SDValue &Lo, SDValue &Hi);
683 void ExpandFloatRes_FMAXIMUMNUM(SDNode *N, SDValue &Lo, SDValue &Hi);
684 void ExpandFloatRes_FADD (SDNode *N, SDValue &Lo, SDValue &Hi);
685 void ExpandFloatRes_FCBRT (SDNode *N, SDValue &Lo, SDValue &Hi);
686 void ExpandFloatRes_FCEIL (SDNode *N, SDValue &Lo, SDValue &Hi);
687 void ExpandFloatRes_FCOPYSIGN (SDNode *N, SDValue &Lo, SDValue &Hi);
688 void ExpandFloatRes_FCOS (SDNode *N, SDValue &Lo, SDValue &Hi);
689 void ExpandFloatRes_FCOSH (SDNode *N, SDValue &Lo, SDValue &Hi);
690 void ExpandFloatRes_FDIV (SDNode *N, SDValue &Lo, SDValue &Hi);
691 void ExpandFloatRes_FEXP (SDNode *N, SDValue &Lo, SDValue &Hi);
692 void ExpandFloatRes_FEXP2 (SDNode *N, SDValue &Lo, SDValue &Hi);
693 void ExpandFloatRes_FEXP10 (SDNode *N, SDValue &Lo, SDValue &Hi);
694 void ExpandFloatRes_FFLOOR (SDNode *N, SDValue &Lo, SDValue &Hi);
695 void ExpandFloatRes_FLOG (SDNode *N, SDValue &Lo, SDValue &Hi);
696 void ExpandFloatRes_FLOG2 (SDNode *N, SDValue &Lo, SDValue &Hi);
697 void ExpandFloatRes_FLOG10 (SDNode *N, SDValue &Lo, SDValue &Hi);
698 void ExpandFloatRes_FMA (SDNode *N, SDValue &Lo, SDValue &Hi);
699 void ExpandFloatRes_FMUL (SDNode *N, SDValue &Lo, SDValue &Hi);
700 void ExpandFloatRes_FNEARBYINT(SDNode *N, SDValue &Lo, SDValue &Hi);
701 void ExpandFloatRes_FNEG (SDNode *N, SDValue &Lo, SDValue &Hi);
702 void ExpandFloatRes_FP_EXTEND (SDNode *N, SDValue &Lo, SDValue &Hi);
703 void ExpandFloatRes_FPOW (SDNode *N, SDValue &Lo, SDValue &Hi);
704 void ExpandFloatRes_FPOWI (SDNode *N, SDValue &Lo, SDValue &Hi);
705 void ExpandFloatRes_FLDEXP (SDNode *N, SDValue &Lo, SDValue &Hi);
706 void ExpandFloatRes_FREEZE (SDNode *N, SDValue &Lo, SDValue &Hi);
707 void ExpandFloatRes_FREM (SDNode *N, SDValue &Lo, SDValue &Hi);
708 void ExpandFloatRes_FRINT (SDNode *N, SDValue &Lo, SDValue &Hi);
709 void ExpandFloatRes_FROUND (SDNode *N, SDValue &Lo, SDValue &Hi);
710 void ExpandFloatRes_FROUNDEVEN(SDNode *N, SDValue &Lo, SDValue &Hi);
711 void ExpandFloatRes_FSIN (SDNode *N, SDValue &Lo, SDValue &Hi);
712 void ExpandFloatRes_FSINH (SDNode *N, SDValue &Lo, SDValue &Hi);
713 void ExpandFloatRes_FSQRT (SDNode *N, SDValue &Lo, SDValue &Hi);
714 void ExpandFloatRes_FSUB (SDNode *N, SDValue &Lo, SDValue &Hi);
715 void ExpandFloatRes_FTAN (SDNode *N, SDValue &Lo, SDValue &Hi);
716 void ExpandFloatRes_FTANH (SDNode *N, SDValue &Lo, SDValue &Hi);
717 void ExpandFloatRes_FTRUNC (SDNode *N, SDValue &Lo, SDValue &Hi);
718 void ExpandFloatRes_LOAD (SDNode *N, SDValue &Lo, SDValue &Hi);
719 void ExpandFloatRes_XINT_TO_FP(SDNode *N, SDValue &Lo, SDValue &Hi);
720 void ExpandFloatRes_FMODF(SDNode *N);
721 void ExpandFloatRes_FSINCOS(SDNode* N);
722 void ExpandFloatRes_FSINCOSPI(SDNode* N);
723 // clang-format on
724
725 // Float Operand Expansion.
726 bool ExpandFloatOperand(SDNode *N, unsigned OpNo);
727 SDValue ExpandFloatOp_BR_CC(SDNode *N);
728 SDValue ExpandFloatOp_FCOPYSIGN(SDNode *N);
729 SDValue ExpandFloatOp_FP_ROUND(SDNode *N);
730 SDValue ExpandFloatOp_FP_TO_XINT(SDNode *N);
731 SDValue ExpandFloatOp_LROUND(SDNode *N);
732 SDValue ExpandFloatOp_LLROUND(SDNode *N);
733 SDValue ExpandFloatOp_LRINT(SDNode *N);
734 SDValue ExpandFloatOp_LLRINT(SDNode *N);
735 SDValue ExpandFloatOp_SELECT_CC(SDNode *N);
736 SDValue ExpandFloatOp_SETCC(SDNode *N);
737 SDValue ExpandFloatOp_STORE(SDNode *N, unsigned OpNo);
738
739 void FloatExpandSetCCOperands(SDValue &NewLHS, SDValue &NewRHS,
740 ISD::CondCode &CCCode, const SDLoc &dl,
741 SDValue &Chain, bool IsSignaling = false);
742
743 //===--------------------------------------------------------------------===//
744 // Float promotion support: LegalizeFloatTypes.cpp
745 //===--------------------------------------------------------------------===//
746
747 SDValue GetPromotedFloat(SDValue Op) {
748 TableId &PromotedId = PromotedFloats[getTableId(V: Op)];
749 SDValue PromotedOp = getSDValue(Id&: PromotedId);
750 assert(PromotedOp.getNode() && "Operand wasn't promoted?");
751 return PromotedOp;
752 }
753 void SetPromotedFloat(SDValue Op, SDValue Result);
754
755 SDValue BitcastToInt_ATOMIC_SWAP(SDNode *N);
756
757 //===--------------------------------------------------------------------===//
758 // Half soft promotion support: LegalizeFloatTypes.cpp
759 //===--------------------------------------------------------------------===//
760
761 SDValue GetSoftPromotedHalf(SDValue Op) {
762 TableId &PromotedId = SoftPromotedHalfs[getTableId(V: Op)];
763 SDValue PromotedOp = getSDValue(Id&: PromotedId);
764 assert(PromotedOp.getNode() && "Operand wasn't promoted?");
765 return PromotedOp;
766 }
767 void SetSoftPromotedHalf(SDValue Op, SDValue Result);
768
769 void SoftPromoteHalfResult(SDNode *N, unsigned ResNo);
770 SDValue SoftPromoteHalfRes_ARITH_FENCE(SDNode *N);
771 SDValue SoftPromoteHalfRes_BinOp(SDNode *N);
772 SDValue SoftPromoteHalfRes_UnaryWithTwoFPResults(SDNode *N);
773 SDValue SoftPromoteHalfRes_BITCAST(SDNode *N);
774 SDValue SoftPromoteHalfRes_ConstantFP(SDNode *N);
775 SDValue SoftPromoteHalfRes_EXTRACT_VECTOR_ELT(SDNode *N);
776 SDValue SoftPromoteHalfRes_FCOPYSIGN(SDNode *N);
777 SDValue SoftPromoteHalfRes_FMAD(SDNode *N);
778 SDValue SoftPromoteHalfRes_ExpOp(SDNode *N);
779 SDValue SoftPromoteHalfRes_FFREXP(SDNode *N);
780 SDValue SoftPromoteHalfRes_FP_ROUND(SDNode *N);
781 SDValue SoftPromoteHalfRes_LOAD(SDNode *N);
782 SDValue SoftPromoteHalfRes_ATOMIC_LOAD(SDNode *N);
783 SDValue SoftPromoteHalfRes_SELECT(SDNode *N);
784 SDValue SoftPromoteHalfRes_SELECT_CC(SDNode *N);
785 SDValue SoftPromoteHalfRes_UnaryOp(SDNode *N);
786 SDValue SoftPromoteHalfRes_FABS(SDNode *N);
787 SDValue SoftPromoteHalfRes_FNEG(SDNode *N);
788 SDValue SoftPromoteHalfRes_AssertNoFPClass(SDNode *N);
789 SDValue SoftPromoteHalfRes_XINT_TO_FP(SDNode *N);
790 SDValue SoftPromoteHalfRes_UNDEF(SDNode *N);
791 SDValue SoftPromoteHalfRes_VECREDUCE(SDNode *N);
792 SDValue SoftPromoteHalfRes_VECREDUCE_SEQ(SDNode *N);
793
794 bool SoftPromoteHalfOperand(SDNode *N, unsigned OpNo);
795 SDValue SoftPromoteHalfOp_BITCAST(SDNode *N);
796 SDValue SoftPromoteHalfOp_FAKE_USE(SDNode *N, unsigned OpNo);
797 SDValue SoftPromoteHalfOp_FCOPYSIGN(SDNode *N, unsigned OpNo);
798 SDValue SoftPromoteHalfOp_FP_EXTEND(SDNode *N);
799 SDValue SoftPromoteHalfOp_Op0WithStrict(SDNode *N);
800 SDValue SoftPromoteHalfOp_FP_TO_XINT_SAT(SDNode *N);
801 SDValue SoftPromoteHalfOp_SETCC(SDNode *N);
802 SDValue SoftPromoteHalfOp_SELECT_CC(SDNode *N, unsigned OpNo);
803 SDValue SoftPromoteHalfOp_STORE(SDNode *N, unsigned OpNo);
804 SDValue SoftPromoteHalfOp_ATOMIC_STORE(SDNode *N, unsigned OpNo);
805 SDValue SoftPromoteHalfOp_STACKMAP(SDNode *N, unsigned OpNo);
806 SDValue SoftPromoteHalfOp_PATCHPOINT(SDNode *N, unsigned OpNo);
807
808 //===--------------------------------------------------------------------===//
809 // Scalarization Support: LegalizeVectorTypes.cpp
810 //===--------------------------------------------------------------------===//
811
812 /// Given a processed one-element vector Op which was scalarized to its
813 /// element type, this returns the element. For example, if Op is a v1i32,
814 /// Op = < i32 val >, this method returns val, an i32.
815 SDValue GetScalarizedVector(SDValue Op) {
816 TableId &ScalarizedId = ScalarizedVectors[getTableId(V: Op)];
817 SDValue ScalarizedOp = getSDValue(Id&: ScalarizedId);
818 assert(ScalarizedOp.getNode() && "Operand wasn't scalarized?");
819 return ScalarizedOp;
820 }
821 void SetScalarizedVector(SDValue Op, SDValue Result);
822
823 // Vector Result Scalarization: <1 x ty> -> ty.
824 void ScalarizeVectorResult(SDNode *N, unsigned ResNo);
825 SDValue ScalarizeVecRes_MERGE_VALUES(SDNode *N, unsigned ResNo);
826 SDValue ScalarizeVecRes_LOOP_DEPENDENCE_MASK(SDNode *N);
827 SDValue ScalarizeVecRes_BinOp(SDNode *N);
828 SDValue ScalarizeVecRes_CMP(SDNode *N);
829 SDValue ScalarizeVecRes_TernaryOp(SDNode *N);
830 SDValue ScalarizeVecRes_UnaryOp(SDNode *N);
831 SDValue ScalarizeVecRes_StrictFPOp(SDNode *N);
832 SDValue ScalarizeVecRes_OverflowOp(SDNode *N, unsigned ResNo);
833 SDValue ScalarizeVecRes_InregOp(SDNode *N);
834 SDValue ScalarizeVecRes_VecInregOp(SDNode *N);
835
836 SDValue ScalarizeVecRes_ADDRSPACECAST(SDNode *N);
837 SDValue ScalarizeVecRes_BITCAST(SDNode *N);
838 SDValue ScalarizeVecRes_BUILD_VECTOR(SDNode *N);
839 SDValue ScalarizeVecRes_EXTRACT_SUBVECTOR(SDNode *N);
840 SDValue ScalarizeVecRes_FP_ROUND(SDNode *N);
841 SDValue ScalarizeVecRes_UnaryOpWithExtraInput(SDNode *N);
842 SDValue ScalarizeVecRes_INSERT_VECTOR_ELT(SDNode *N);
843 SDValue ScalarizeVecRes_LOAD(LoadSDNode *N);
844 SDValue ScalarizeVecRes_ATOMIC_LOAD(AtomicSDNode *N);
845 SDValue ScalarizeVecRes_SCALAR_TO_VECTOR(SDNode *N);
846 SDValue ScalarizeVecRes_VSELECT(SDNode *N);
847 SDValue ScalarizeVecRes_SELECT(SDNode *N);
848 SDValue ScalarizeVecRes_SELECT_CC(SDNode *N);
849 SDValue ScalarizeVecRes_SETCC(SDNode *N);
850 SDValue ScalarizeVecRes_UNDEF(SDNode *N);
851 SDValue ScalarizeVecRes_VECTOR_SHUFFLE(SDNode *N);
852 SDValue ScalarizeVecRes_FP_TO_XINT_SAT(SDNode *N);
853 SDValue ScalarizeVecRes_IS_FPCLASS(SDNode *N);
854
855 SDValue ScalarizeVecRes_FIX(SDNode *N);
856 SDValue ScalarizeVecRes_UnaryOpWithTwoResults(SDNode *N, unsigned ResNo);
857
858 // Vector Operand Scalarization: <1 x ty> -> ty.
859 bool ScalarizeVectorOperand(SDNode *N, unsigned OpNo);
860 SDValue ScalarizeVecOp_BITCAST(SDNode *N);
861 SDValue ScalarizeVecOp_UnaryOp(SDNode *N);
862 SDValue ScalarizeVecOp_UnaryOpWithExtraInput(SDNode *N);
863 SDValue ScalarizeVecOp_UnaryOp_StrictFP(SDNode *N);
864 SDValue ScalarizeVecOp_CONCAT_VECTORS(SDNode *N);
865 SDValue ScalarizeVecOp_INSERT_SUBVECTOR(SDNode *N, unsigned OpNo);
866 SDValue ScalarizeVecOp_EXTRACT_VECTOR_ELT(SDNode *N);
867 SDValue ScalarizeVecOp_VSELECT(SDNode *N);
868 SDValue ScalarizeVecOp_VSETCC(SDNode *N);
869 SDValue ScalarizeVecOp_VSTRICT_FSETCC(SDNode *N, unsigned OpNo);
870 SDValue ScalarizeVecOp_STORE(StoreSDNode *N, unsigned OpNo);
871 SDValue ScalarizeVecOp_FP_ROUND(SDNode *N, unsigned OpNo);
872 SDValue ScalarizeVecOp_STRICT_FP_ROUND(SDNode *N, unsigned OpNo);
873 SDValue ScalarizeVecOp_FP_EXTEND(SDNode *N);
874 SDValue ScalarizeVecOp_STRICT_FP_EXTEND(SDNode *N);
875 SDValue ScalarizeVecOp_VECREDUCE(SDNode *N);
876 SDValue ScalarizeVecOp_VECREDUCE_SEQ(SDNode *N);
877 SDValue ScalarizeVecOp_CMP(SDNode *N);
878 SDValue ScalarizeVecOp_FAKE_USE(SDNode *N);
879 SDValue ScalarizeVecOp_VECTOR_FIND_LAST_ACTIVE(SDNode *N);
880
881 //===--------------------------------------------------------------------===//
882 // Vector Splitting Support: LegalizeVectorTypes.cpp
883 //===--------------------------------------------------------------------===//
884
885 /// Given a processed vector Op which was split into vectors of half the size,
886 /// this method returns the halves. The first elements of Op coincide with the
887 /// elements of Lo; the remaining elements of Op coincide with the elements of
888 /// Hi: Op is what you would get by concatenating Lo and Hi.
889 /// For example, if Op is a v8i32 that was split into two v4i32's, then this
890 /// method returns the two v4i32's, with Lo corresponding to the first 4
891 /// elements of Op, and Hi to the last 4 elements.
892 void GetSplitVector(SDValue Op, SDValue &Lo, SDValue &Hi);
893 void SetSplitVector(SDValue Op, SDValue Lo, SDValue Hi);
894
895 /// Split mask operator of a VP intrinsic.
896 std::pair<SDValue, SDValue> SplitMask(SDValue Mask);
897
898 /// Split mask operator of a VP intrinsic in a given location.
899 std::pair<SDValue, SDValue> SplitMask(SDValue Mask, const SDLoc &DL);
900
901 // Helper function for incrementing the pointer when splitting
902 // memory operations
903 void IncrementPointer(MemSDNode *N, EVT MemVT, MachinePointerInfo &MPI,
904 SDValue &Ptr, uint64_t *ScaledOffset = nullptr);
905
906 // Vector Result Splitting: <128 x ty> -> 2 x <64 x ty>.
907 void SplitVectorResult(SDNode *N, unsigned ResNo);
908 void SplitVecRes_BinOp(SDNode *N, SDValue &Lo, SDValue &Hi);
909 void SplitVecRes_TernaryOp(SDNode *N, SDValue &Lo, SDValue &Hi);
910 void SplitVecRes_CMP(SDNode *N, SDValue &Lo, SDValue &Hi);
911 void SplitVecRes_UnaryOp(SDNode *N, SDValue &Lo, SDValue &Hi);
912 void SplitVecRes_ADDRSPACECAST(SDNode *N, SDValue &Lo, SDValue &Hi);
913 void SplitVecRes_UnaryOpWithTwoResults(SDNode *N, unsigned ResNo, SDValue &Lo,
914 SDValue &Hi);
915 void SplitVecRes_ExtendOp(SDNode *N, SDValue &Lo, SDValue &Hi);
916 void SplitVecRes_InregOp(SDNode *N, SDValue &Lo, SDValue &Hi);
917 void SplitVecRes_ExtVecInRegOp(SDNode *N, SDValue &Lo, SDValue &Hi);
918 void SplitVecRes_StrictFPOp(SDNode *N, SDValue &Lo, SDValue &Hi);
919 void SplitVecRes_OverflowOp(SDNode *N, unsigned ResNo,
920 SDValue &Lo, SDValue &Hi);
921
922 void SplitVecRes_FIX(SDNode *N, SDValue &Lo, SDValue &Hi);
923
924 void SplitVecRes_BITCAST(SDNode *N, SDValue &Lo, SDValue &Hi);
925 void SplitVecRes_LOOP_DEPENDENCE_MASK(SDNode *N, SDValue &Lo, SDValue &Hi);
926 void SplitVecRes_BUILD_VECTOR(SDNode *N, SDValue &Lo, SDValue &Hi);
927 void SplitVecRes_CONCAT_VECTORS(SDNode *N, SDValue &Lo, SDValue &Hi);
928 void SplitVecRes_EXTRACT_SUBVECTOR(SDNode *N, SDValue &Lo, SDValue &Hi);
929 void SplitVecRes_INSERT_SUBVECTOR(SDNode *N, SDValue &Lo, SDValue &Hi);
930 void SplitVecRes_FPOp_MultiType(SDNode *N, SDValue &Lo, SDValue &Hi);
931 void SplitVecRes_IS_FPCLASS(SDNode *N, SDValue &Lo, SDValue &Hi);
932 void SplitVecRes_INSERT_VECTOR_ELT(SDNode *N, SDValue &Lo, SDValue &Hi);
933 void SplitVecRes_LOAD(LoadSDNode *LD, SDValue &Lo, SDValue &Hi);
934 void SplitVecRes_VP_LOAD(VPLoadSDNode *LD, SDValue &Lo, SDValue &Hi);
935 void SplitVecRes_VP_LOAD_FF(VPLoadFFSDNode *LD, SDValue &Lo, SDValue &Hi);
936 void SplitVecRes_VP_STRIDED_LOAD(VPStridedLoadSDNode *SLD, SDValue &Lo,
937 SDValue &Hi);
938 void SplitVecRes_MLOAD(MaskedLoadSDNode *MLD, SDValue &Lo, SDValue &Hi);
939 void SplitVecRes_Gather(MemSDNode *VPGT, SDValue &Lo, SDValue &Hi,
940 bool SplitSETCC = false);
941 void SplitVecRes_VECTOR_COMPRESS(SDNode *N, SDValue &Lo, SDValue &Hi);
942 void SplitVecRes_ScalarOp(SDNode *N, SDValue &Lo, SDValue &Hi);
943 void SplitVecRes_STEP_VECTOR(SDNode *N, SDValue &Lo, SDValue &Hi);
944 void SplitVecRes_SETCC(SDNode *N, SDValue &Lo, SDValue &Hi);
945 void SplitVecRes_VECTOR_REVERSE(SDNode *N, SDValue &Lo, SDValue &Hi);
946 void SplitVecRes_VECTOR_SHUFFLE(ShuffleVectorSDNode *N, SDValue &Lo,
947 SDValue &Hi);
948 void SplitVecRes_VECTOR_SPLICE(SDNode *N, SDValue &Lo, SDValue &Hi);
949 void SplitVecRes_VECTOR_DEINTERLEAVE(SDNode *N);
950 void SplitVecRes_VECTOR_INTERLEAVE(SDNode *N);
951 void SplitVecRes_VAARG(SDNode *N, SDValue &Lo, SDValue &Hi);
952 void SplitVecRes_FP_TO_XINT_SAT(SDNode *N, SDValue &Lo, SDValue &Hi);
953 void SplitVecRes_VP_SPLICE(SDNode *N, SDValue &Lo, SDValue &Hi);
954 void SplitVecRes_VP_REVERSE(SDNode *N, SDValue &Lo, SDValue &Hi);
955 void SplitVecRes_PARTIAL_REDUCE_MLA(SDNode *N, SDValue &Lo, SDValue &Hi);
956 void SplitVecRes_GET_ACTIVE_LANE_MASK(SDNode *N, SDValue &Lo, SDValue &Hi);
957
958 // Vector Operand Splitting: <128 x ty> -> 2 x <64 x ty>.
959 bool SplitVectorOperand(SDNode *N, unsigned OpNo);
960 SDValue SplitVecOp_VSELECT(SDNode *N, unsigned OpNo);
961 SDValue SplitVecOp_VECREDUCE(SDNode *N, unsigned OpNo);
962 SDValue SplitVecOp_VECREDUCE_SEQ(SDNode *N);
963 SDValue SplitVecOp_VP_REDUCE(SDNode *N, unsigned OpNo);
964 SDValue SplitVecOp_UnaryOp(SDNode *N);
965 SDValue SplitVecOp_TruncateHelper(SDNode *N);
966 SDValue SplitVecOp_VECTOR_COMPRESS(SDNode *N, unsigned OpNo);
967
968 SDValue SplitVecOp_BITCAST(SDNode *N);
969 SDValue SplitVecOp_INSERT_SUBVECTOR(SDNode *N, unsigned OpNo);
970 SDValue SplitVecOp_EXTRACT_SUBVECTOR(SDNode *N);
971 SDValue SplitVecOp_EXTRACT_VECTOR_ELT(SDNode *N);
972 SDValue SplitVecOp_ExtVecInRegOp(SDNode *N);
973 SDValue SplitVecOp_FAKE_USE(SDNode *N);
974 SDValue SplitVecOp_STORE(StoreSDNode *N, unsigned OpNo);
975 SDValue SplitVecOp_VP_STORE(VPStoreSDNode *N, unsigned OpNo);
976 SDValue SplitVecOp_VP_STRIDED_STORE(VPStridedStoreSDNode *N, unsigned OpNo);
977 SDValue SplitVecOp_MSTORE(MaskedStoreSDNode *N, unsigned OpNo);
978 SDValue SplitVecOp_Scatter(MemSDNode *N, unsigned OpNo);
979 SDValue SplitVecOp_Gather(MemSDNode *MGT, unsigned OpNo);
980 SDValue SplitVecOp_CONCAT_VECTORS(SDNode *N);
981 SDValue SplitVecOp_VSETCC(SDNode *N);
982 SDValue SplitVecOp_FP_ROUND(SDNode *N);
983 SDValue SplitVecOp_FPOpDifferentTypes(SDNode *N);
984 SDValue SplitVecOp_CMP(SDNode *N);
985 SDValue SplitVecOp_FP_TO_XINT_SAT(SDNode *N);
986 SDValue SplitVecOp_VP_CttzElements(SDNode *N);
987 SDValue SplitVecOp_VECTOR_HISTOGRAM(SDNode *N);
988 SDValue SplitVecOp_PARTIAL_REDUCE_MLA(SDNode *N);
989 SDValue SplitVecOp_VECTOR_FIND_LAST_ACTIVE(SDNode *N);
990
991 //===--------------------------------------------------------------------===//
992 // Vector Widening Support: LegalizeVectorTypes.cpp
993 //===--------------------------------------------------------------------===//
994
995 /// Given a processed vector Op which was widened into a larger vector, this
996 /// method returns the larger vector. The elements of the returned vector
997 /// consist of the elements of Op followed by elements containing rubbish.
998 /// For example, if Op is a v2i32 that was widened to a v4i32, then this
999 /// method returns a v4i32 for which the first two elements are the same as
1000 /// those of Op, while the last two elements contain rubbish.
1001 SDValue GetWidenedVector(SDValue Op) {
1002 TableId &WidenedId = WidenedVectors[getTableId(V: Op)];
1003 SDValue WidenedOp = getSDValue(Id&: WidenedId);
1004 assert(WidenedOp.getNode() && "Operand wasn't widened?");
1005 return WidenedOp;
1006 }
1007 void SetWidenedVector(SDValue Op, SDValue Result);
1008
1009 /// Given a mask Mask, returns the larger vector into which Mask was widened.
1010 SDValue GetWidenedMask(SDValue Mask, ElementCount EC) {
1011 // For VP operations, we must also widen the mask. Note that the mask type
1012 // may not actually need widening, leading it be split along with the VP
1013 // operation.
1014 // FIXME: This could lead to an infinite split/widen loop. We only handle
1015 // the case where the mask needs widening to an identically-sized type as
1016 // the vector inputs.
1017 assert(getTypeAction(Mask.getValueType()) ==
1018 TargetLowering::TypeWidenVector &&
1019 "Unable to widen binary VP op");
1020 Mask = GetWidenedVector(Op: Mask);
1021 assert(Mask.getValueType().getVectorElementCount() == EC &&
1022 "Unable to widen binary VP op");
1023 return Mask;
1024 }
1025
1026 // Widen Vector Result Promotion.
1027 void WidenVectorResult(SDNode *N, unsigned ResNo);
1028 SDValue WidenVecRes_MERGE_VALUES(SDNode* N, unsigned ResNo);
1029 SDValue WidenVecRes_ADDRSPACECAST(SDNode *N);
1030 SDValue WidenVecRes_AssertZext(SDNode* N);
1031 SDValue WidenVecRes_BITCAST(SDNode* N);
1032 SDValue WidenVecRes_LOOP_DEPENDENCE_MASK(SDNode *N);
1033 SDValue WidenVecRes_BUILD_VECTOR(SDNode* N);
1034 SDValue WidenVecRes_CONCAT_VECTORS(SDNode* N);
1035 SDValue WidenVecRes_EXTEND_VECTOR_INREG(SDNode* N);
1036 SDValue WidenVecRes_EXTRACT_SUBVECTOR(SDNode* N);
1037 SDValue WidenVecRes_INSERT_SUBVECTOR(SDNode *N);
1038 SDValue WidenVecRes_INSERT_VECTOR_ELT(SDNode* N);
1039 SDValue WidenVecRes_ATOMIC_LOAD(AtomicSDNode *N);
1040 SDValue WidenVecRes_LOAD(SDNode* N);
1041 SDValue WidenVecRes_VP_LOAD(VPLoadSDNode *N);
1042 SDValue WidenVecRes_VP_LOAD_FF(VPLoadFFSDNode *N);
1043 SDValue WidenVecRes_VP_STRIDED_LOAD(VPStridedLoadSDNode *N);
1044 SDValue WidenVecRes_VECTOR_COMPRESS(SDNode *N);
1045 SDValue WidenVecRes_MLOAD(MaskedLoadSDNode* N);
1046 SDValue WidenVecRes_MGATHER(MaskedGatherSDNode* N);
1047 SDValue WidenVecRes_VP_GATHER(VPGatherSDNode* N);
1048 SDValue WidenVecRes_ScalarOp(SDNode* N);
1049 SDValue WidenVecRes_Select(SDNode *N);
1050 SDValue WidenVSELECTMask(SDNode *N);
1051 SDValue WidenVecRes_SELECT_CC(SDNode* N);
1052 SDValue WidenVecRes_SETCC(SDNode* N);
1053 SDValue WidenVecRes_STRICT_FSETCC(SDNode* N);
1054 SDValue WidenVecRes_UNDEF(SDNode *N);
1055 SDValue WidenVecRes_VECTOR_SHUFFLE(ShuffleVectorSDNode *N);
1056 SDValue WidenVecRes_VECTOR_REVERSE(SDNode *N);
1057 SDValue WidenVecRes_GET_ACTIVE_LANE_MASK(SDNode *N);
1058
1059 SDValue WidenVecRes_Ternary(SDNode *N);
1060 SDValue WidenVecRes_Binary(SDNode *N);
1061 SDValue WidenVecRes_CMP(SDNode *N);
1062 SDValue WidenVecRes_BinaryCanTrap(SDNode *N);
1063 SDValue WidenVecRes_BinaryWithExtraScalarOp(SDNode *N);
1064 SDValue WidenVecRes_StrictFP(SDNode *N);
1065 SDValue WidenVecRes_OverflowOp(SDNode *N, unsigned ResNo);
1066 SDValue WidenVecRes_Convert(SDNode *N);
1067 SDValue WidenVecRes_Convert_StrictFP(SDNode *N);
1068 SDValue WidenVecRes_FP_TO_XINT_SAT(SDNode *N);
1069 SDValue WidenVecRes_XROUND(SDNode *N);
1070 SDValue WidenVecRes_FCOPYSIGN(SDNode *N);
1071 SDValue WidenVecRes_UnarySameEltsWithScalarArg(SDNode *N);
1072 SDValue WidenVecRes_ExpOp(SDNode *N);
1073 SDValue WidenVecRes_Unary(SDNode *N);
1074 SDValue WidenVecRes_InregOp(SDNode *N);
1075 SDValue WidenVecRes_UnaryOpWithTwoResults(SDNode *N, unsigned ResNo);
1076 void ReplaceOtherWidenResults(SDNode *N, SDNode *WidenNode,
1077 unsigned WidenResNo);
1078
1079 // Widen Vector Operand.
1080 bool WidenVectorOperand(SDNode *N, unsigned OpNo);
1081 SDValue WidenVecOp_BITCAST(SDNode *N);
1082 SDValue WidenVecOp_CONCAT_VECTORS(SDNode *N);
1083 SDValue WidenVecOp_EXTEND(SDNode *N);
1084 SDValue WidenVecOp_CMP(SDNode *N);
1085 SDValue WidenVecOp_EXTRACT_VECTOR_ELT(SDNode *N);
1086 SDValue WidenVecOp_INSERT_SUBVECTOR(SDNode *N);
1087 SDValue WidenVecOp_EXTRACT_SUBVECTOR(SDNode *N);
1088 SDValue WidenVecOp_EXTEND_VECTOR_INREG(SDNode *N);
1089 SDValue WidenVecOp_FAKE_USE(SDNode *N);
1090 SDValue WidenVecOp_STORE(SDNode* N);
1091 SDValue WidenVecOp_VP_STORE(SDNode *N, unsigned OpNo);
1092 SDValue WidenVecOp_VP_STRIDED_STORE(SDNode *N, unsigned OpNo);
1093 SDValue WidenVecOp_MSTORE(SDNode* N, unsigned OpNo);
1094 SDValue WidenVecOp_MGATHER(SDNode* N, unsigned OpNo);
1095 SDValue WidenVecOp_MSCATTER(SDNode* N, unsigned OpNo);
1096 SDValue WidenVecOp_VP_SCATTER(SDNode* N, unsigned OpNo);
1097 SDValue WidenVecOp_SETCC(SDNode* N);
1098 SDValue WidenVecOp_STRICT_FSETCC(SDNode* N);
1099 SDValue WidenVecOp_VSELECT(SDNode *N);
1100
1101 SDValue WidenVecOp_Convert(SDNode *N);
1102 SDValue WidenVecOp_FP_TO_XINT_SAT(SDNode *N);
1103 SDValue WidenVecOp_UnrollVectorOp(SDNode *N);
1104 SDValue WidenVecOp_IS_FPCLASS(SDNode *N);
1105 SDValue WidenVecOp_VECREDUCE(SDNode *N);
1106 SDValue WidenVecOp_VECREDUCE_SEQ(SDNode *N);
1107 SDValue WidenVecOp_VP_REDUCE(SDNode *N);
1108 SDValue WidenVecOp_ExpOp(SDNode *N);
1109 SDValue WidenVecOp_VP_CttzElements(SDNode *N);
1110 SDValue WidenVecOp_VECTOR_FIND_LAST_ACTIVE(SDNode *N);
1111
1112 /// Helper function to generate a set of operations to perform
1113 /// a vector operation for a wider type.
1114 ///
1115 SDValue UnrollVectorOp_StrictFP(SDNode *N, unsigned ResNE);
1116
1117 //===--------------------------------------------------------------------===//
1118 // Vector Widening Utilities Support: LegalizeVectorTypes.cpp
1119 //===--------------------------------------------------------------------===//
1120
1121 /// Helper function to generate a set of loads to load a vector with a
1122 /// resulting wider type. It takes:
1123 /// LdChain: list of chains for the load to be generated.
1124 /// Ld: load to widen
1125 SDValue GenWidenVectorLoads(SmallVectorImpl<SDValue> &LdChain,
1126 LoadSDNode *LD);
1127
1128 /// Helper function to generate a set of extension loads to load a vector with
1129 /// a resulting wider type. It takes:
1130 /// LdChain: list of chains for the load to be generated.
1131 /// Ld: load to widen
1132 /// ExtType: extension element type
1133 SDValue GenWidenVectorExtLoads(SmallVectorImpl<SDValue> &LdChain,
1134 LoadSDNode *LD, ISD::LoadExtType ExtType);
1135
1136 /// Helper function to generate a set of stores to store a widen vector into
1137 /// non-widen memory. Returns true if successful, false otherwise.
1138 /// StChain: list of chains for the stores we have generated
1139 /// ST: store of a widen value
1140 bool GenWidenVectorStores(SmallVectorImpl<SDValue> &StChain, StoreSDNode *ST);
1141
1142 /// Modifies a vector input (widen or narrows) to a vector of NVT. The
1143 /// input vector must have the same element type as NVT.
1144 /// When FillWithZeroes is "on" the vector will be widened with zeroes.
1145 /// By default, the vector will be widened with undefined values.
1146 SDValue ModifyToType(SDValue InOp, EVT NVT, bool FillWithZeroes = false);
1147
1148 /// Return a mask of vector type MaskVT to replace InMask. Also adjust
1149 /// MaskVT to ToMaskVT if needed with vector extension or truncation.
1150 SDValue convertMask(SDValue InMask, EVT MaskVT, EVT ToMaskVT);
1151
1152 //===--------------------------------------------------------------------===//
1153 // Generic Splitting: LegalizeTypesGeneric.cpp
1154 //===--------------------------------------------------------------------===//
1155
1156 // Legalization methods which only use that the illegal type is split into two
1157 // not necessarily identical types. As such they can be used for splitting
1158 // vectors and expanding integers and floats.
1159
1160 void GetSplitOp(SDValue Op, SDValue &Lo, SDValue &Hi) {
1161 if (Op.getValueType().isVector())
1162 GetSplitVector(Op, Lo, Hi);
1163 else if (Op.getValueType().isInteger())
1164 GetExpandedInteger(Op, Lo, Hi);
1165 else
1166 GetExpandedFloat(Op, Lo, Hi);
1167 }
1168
1169 /// Use ISD::EXTRACT_ELEMENT nodes to extract the low and high parts of the
1170 /// given value.
1171 void GetPairElements(SDValue Pair, SDValue &Lo, SDValue &Hi);
1172
1173 // Generic Result Splitting.
1174 void SplitRes_MERGE_VALUES(SDNode *N, unsigned ResNo,
1175 SDValue &Lo, SDValue &Hi);
1176 void SplitVecRes_AssertZext(SDNode *N, SDValue &Lo, SDValue &Hi);
1177 void SplitVecRes_AssertSext(SDNode *N, SDValue &Lo, SDValue &Hi);
1178 void SplitRes_ARITH_FENCE (SDNode *N, SDValue &Lo, SDValue &Hi);
1179 void SplitRes_Select (SDNode *N, SDValue &Lo, SDValue &Hi);
1180 void SplitRes_SELECT_CC (SDNode *N, SDValue &Lo, SDValue &Hi);
1181 void SplitRes_UNDEF (SDNode *N, SDValue &Lo, SDValue &Hi);
1182 void SplitRes_FREEZE (SDNode *N, SDValue &Lo, SDValue &Hi);
1183
1184 //===--------------------------------------------------------------------===//
1185 // Generic Expansion: LegalizeTypesGeneric.cpp
1186 //===--------------------------------------------------------------------===//
1187
1188 // Legalization methods which only use that the illegal type is split into two
1189 // identical types of half the size, and that the Lo/Hi part is stored first
1190 // in memory on little/big-endian machines, followed by the Hi/Lo part. As
1191 // such they can be used for expanding integers and floats.
1192
1193 void GetExpandedOp(SDValue Op, SDValue &Lo, SDValue &Hi) {
1194 if (Op.getValueType().isInteger())
1195 GetExpandedInteger(Op, Lo, Hi);
1196 else
1197 GetExpandedFloat(Op, Lo, Hi);
1198 }
1199
1200
1201 /// This function will split the integer \p Op into \p NumElements
1202 /// operations of type \p EltVT and store them in \p Ops.
1203 void IntegerToVector(SDValue Op, unsigned NumElements,
1204 SmallVectorImpl<SDValue> &Ops, EVT EltVT);
1205
1206 // Generic Result Expansion.
1207 void ExpandRes_MERGE_VALUES (SDNode *N, unsigned ResNo,
1208 SDValue &Lo, SDValue &Hi);
1209 void ExpandRes_BITCAST (SDNode *N, SDValue &Lo, SDValue &Hi);
1210 void ExpandRes_BUILD_PAIR (SDNode *N, SDValue &Lo, SDValue &Hi);
1211 void ExpandRes_EXTRACT_ELEMENT (SDNode *N, SDValue &Lo, SDValue &Hi);
1212 void ExpandRes_EXTRACT_VECTOR_ELT(SDNode *N, SDValue &Lo, SDValue &Hi);
1213 void ExpandRes_NormalLoad (SDNode *N, SDValue &Lo, SDValue &Hi);
1214 void ExpandRes_VAARG (SDNode *N, SDValue &Lo, SDValue &Hi);
1215
1216 // Generic Operand Expansion.
1217 SDValue ExpandOp_BITCAST (SDNode *N);
1218 SDValue ExpandOp_BUILD_VECTOR (SDNode *N);
1219 SDValue ExpandOp_EXTRACT_ELEMENT (SDNode *N);
1220 SDValue ExpandOp_FAKE_USE(SDNode *N);
1221 SDValue ExpandOp_INSERT_VECTOR_ELT(SDNode *N);
1222 SDValue ExpandOp_SCALAR_TO_VECTOR (SDNode *N);
1223 SDValue ExpandOp_NormalStore (SDNode *N, unsigned OpNo);
1224};
1225
1226} // end namespace llvm.
1227
1228#endif
1229