1 //===-- MipsSEISelLowering.cpp - MipsSE DAG Lowering Interface --*- 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 // Subclass of MipsTargetLowering specialized for mips32/64.
12 //===----------------------------------------------------------------------===//
13 #include "MipsSEISelLowering.h"
14 #include "MipsRegisterInfo.h"
15 #include "MipsTargetMachine.h"
16 #include "llvm/CodeGen/MachineInstrBuilder.h"
17 #include "llvm/CodeGen/MachineRegisterInfo.h"
18 #include "llvm/IR/Intrinsics.h"
19 #include "llvm/Support/CommandLine.h"
20 #include "llvm/Target/TargetInstrInfo.h"
25 EnableMipsTailCalls("enable-mips-tail-calls", cl::Hidden,
26 cl::desc("MIPS: Enable tail calls."), cl::init(false));
28 static cl::opt<bool> NoDPLoadStore("mno-ldc1-sdc1", cl::init(false),
29 cl::desc("Expand double precision loads and "
30 "stores to their single precision "
33 MipsSETargetLowering::MipsSETargetLowering(MipsTargetMachine &TM)
34 : MipsTargetLowering(TM) {
35 // Set up the register classes
37 clearRegisterClasses();
39 addRegisterClass(MVT::i32, &Mips::GPR32RegClass);
42 addRegisterClass(MVT::i64, &Mips::GPR64RegClass);
44 if (Subtarget->hasDSP() || Subtarget->hasMSA()) {
45 // Expand all truncating stores and extending loads.
46 unsigned FirstVT = (unsigned)MVT::FIRST_VECTOR_VALUETYPE;
47 unsigned LastVT = (unsigned)MVT::LAST_VECTOR_VALUETYPE;
49 for (unsigned VT0 = FirstVT; VT0 <= LastVT; ++VT0) {
50 for (unsigned VT1 = FirstVT; VT1 <= LastVT; ++VT1)
51 setTruncStoreAction((MVT::SimpleValueType)VT0,
52 (MVT::SimpleValueType)VT1, Expand);
54 setLoadExtAction(ISD::SEXTLOAD, (MVT::SimpleValueType)VT0, Expand);
55 setLoadExtAction(ISD::ZEXTLOAD, (MVT::SimpleValueType)VT0, Expand);
56 setLoadExtAction(ISD::EXTLOAD, (MVT::SimpleValueType)VT0, Expand);
60 if (Subtarget->hasDSP()) {
61 MVT::SimpleValueType VecTys[2] = {MVT::v2i16, MVT::v4i8};
63 for (unsigned i = 0; i < array_lengthof(VecTys); ++i) {
64 addRegisterClass(VecTys[i], &Mips::DSPRRegClass);
66 // Expand all builtin opcodes.
67 for (unsigned Opc = 0; Opc < ISD::BUILTIN_OP_END; ++Opc)
68 setOperationAction(Opc, VecTys[i], Expand);
70 setOperationAction(ISD::ADD, VecTys[i], Legal);
71 setOperationAction(ISD::SUB, VecTys[i], Legal);
72 setOperationAction(ISD::LOAD, VecTys[i], Legal);
73 setOperationAction(ISD::STORE, VecTys[i], Legal);
74 setOperationAction(ISD::BITCAST, VecTys[i], Legal);
77 setTargetDAGCombine(ISD::SHL);
78 setTargetDAGCombine(ISD::SRA);
79 setTargetDAGCombine(ISD::SRL);
80 setTargetDAGCombine(ISD::SETCC);
81 setTargetDAGCombine(ISD::VSELECT);
84 if (Subtarget->hasDSPR2())
85 setOperationAction(ISD::MUL, MVT::v2i16, Legal);
87 if (Subtarget->hasMSA()) {
88 addMSAIntType(MVT::v16i8, &Mips::MSA128BRegClass);
89 addMSAIntType(MVT::v8i16, &Mips::MSA128HRegClass);
90 addMSAIntType(MVT::v4i32, &Mips::MSA128WRegClass);
91 addMSAIntType(MVT::v2i64, &Mips::MSA128DRegClass);
92 addMSAFloatType(MVT::v8f16, &Mips::MSA128HRegClass);
93 addMSAFloatType(MVT::v4f32, &Mips::MSA128WRegClass);
94 addMSAFloatType(MVT::v2f64, &Mips::MSA128DRegClass);
96 setTargetDAGCombine(ISD::AND);
97 setTargetDAGCombine(ISD::SRA);
98 setTargetDAGCombine(ISD::VSELECT);
99 setTargetDAGCombine(ISD::XOR);
102 if (!Subtarget->mipsSEUsesSoftFloat()) {
103 addRegisterClass(MVT::f32, &Mips::FGR32RegClass);
105 // When dealing with single precision only, use libcalls
106 if (!Subtarget->isSingleFloat()) {
107 if (Subtarget->isFP64bit())
108 addRegisterClass(MVT::f64, &Mips::FGR64RegClass);
110 addRegisterClass(MVT::f64, &Mips::AFGR64RegClass);
114 setOperationAction(ISD::SMUL_LOHI, MVT::i32, Custom);
115 setOperationAction(ISD::UMUL_LOHI, MVT::i32, Custom);
116 setOperationAction(ISD::MULHS, MVT::i32, Custom);
117 setOperationAction(ISD::MULHU, MVT::i32, Custom);
120 setOperationAction(ISD::MULHS, MVT::i64, Custom);
121 setOperationAction(ISD::MULHU, MVT::i64, Custom);
122 setOperationAction(ISD::MUL, MVT::i64, Custom);
125 setOperationAction(ISD::INTRINSIC_WO_CHAIN, MVT::i64, Custom);
126 setOperationAction(ISD::INTRINSIC_W_CHAIN, MVT::i64, Custom);
128 setOperationAction(ISD::SDIVREM, MVT::i32, Custom);
129 setOperationAction(ISD::UDIVREM, MVT::i32, Custom);
130 setOperationAction(ISD::SDIVREM, MVT::i64, Custom);
131 setOperationAction(ISD::UDIVREM, MVT::i64, Custom);
132 setOperationAction(ISD::ATOMIC_FENCE, MVT::Other, Custom);
133 setOperationAction(ISD::LOAD, MVT::i32, Custom);
134 setOperationAction(ISD::STORE, MVT::i32, Custom);
136 setTargetDAGCombine(ISD::ADDE);
137 setTargetDAGCombine(ISD::SUBE);
138 setTargetDAGCombine(ISD::MUL);
140 setOperationAction(ISD::INTRINSIC_WO_CHAIN, MVT::Other, Custom);
141 setOperationAction(ISD::INTRINSIC_W_CHAIN, MVT::Other, Custom);
142 setOperationAction(ISD::INTRINSIC_VOID, MVT::Other, Custom);
145 setOperationAction(ISD::LOAD, MVT::f64, Custom);
146 setOperationAction(ISD::STORE, MVT::f64, Custom);
149 computeRegisterProperties();
152 const MipsTargetLowering *
153 llvm::createMipsSETargetLowering(MipsTargetMachine &TM) {
154 return new MipsSETargetLowering(TM);
157 // Enable MSA support for the given integer type and Register class.
158 void MipsSETargetLowering::
159 addMSAIntType(MVT::SimpleValueType Ty, const TargetRegisterClass *RC) {
160 addRegisterClass(Ty, RC);
162 // Expand all builtin opcodes.
163 for (unsigned Opc = 0; Opc < ISD::BUILTIN_OP_END; ++Opc)
164 setOperationAction(Opc, Ty, Expand);
166 setOperationAction(ISD::BITCAST, Ty, Legal);
167 setOperationAction(ISD::LOAD, Ty, Legal);
168 setOperationAction(ISD::STORE, Ty, Legal);
169 setOperationAction(ISD::EXTRACT_VECTOR_ELT, Ty, Custom);
170 setOperationAction(ISD::INSERT_VECTOR_ELT, Ty, Legal);
171 setOperationAction(ISD::BUILD_VECTOR, Ty, Custom);
173 setOperationAction(ISD::ADD, Ty, Legal);
174 setOperationAction(ISD::AND, Ty, Legal);
175 setOperationAction(ISD::CTLZ, Ty, Legal);
176 setOperationAction(ISD::CTPOP, Ty, Legal);
177 setOperationAction(ISD::MUL, Ty, Legal);
178 setOperationAction(ISD::OR, Ty, Legal);
179 setOperationAction(ISD::SDIV, Ty, Legal);
180 setOperationAction(ISD::SHL, Ty, Legal);
181 setOperationAction(ISD::SRA, Ty, Legal);
182 setOperationAction(ISD::SRL, Ty, Legal);
183 setOperationAction(ISD::SUB, Ty, Legal);
184 setOperationAction(ISD::UDIV, Ty, Legal);
185 setOperationAction(ISD::VECTOR_SHUFFLE, Ty, Custom);
186 setOperationAction(ISD::VSELECT, Ty, Legal);
187 setOperationAction(ISD::XOR, Ty, Legal);
189 setOperationAction(ISD::SETCC, Ty, Legal);
190 setCondCodeAction(ISD::SETNE, Ty, Expand);
191 setCondCodeAction(ISD::SETGE, Ty, Expand);
192 setCondCodeAction(ISD::SETGT, Ty, Expand);
193 setCondCodeAction(ISD::SETUGE, Ty, Expand);
194 setCondCodeAction(ISD::SETUGT, Ty, Expand);
197 // Enable MSA support for the given floating-point type and Register class.
198 void MipsSETargetLowering::
199 addMSAFloatType(MVT::SimpleValueType Ty, const TargetRegisterClass *RC) {
200 addRegisterClass(Ty, RC);
202 // Expand all builtin opcodes.
203 for (unsigned Opc = 0; Opc < ISD::BUILTIN_OP_END; ++Opc)
204 setOperationAction(Opc, Ty, Expand);
206 setOperationAction(ISD::LOAD, Ty, Legal);
207 setOperationAction(ISD::STORE, Ty, Legal);
208 setOperationAction(ISD::BITCAST, Ty, Legal);
209 setOperationAction(ISD::EXTRACT_VECTOR_ELT, Ty, Legal);
211 if (Ty != MVT::v8f16) {
212 setOperationAction(ISD::FABS, Ty, Legal);
213 setOperationAction(ISD::FADD, Ty, Legal);
214 setOperationAction(ISD::FDIV, Ty, Legal);
215 setOperationAction(ISD::FLOG2, Ty, Legal);
216 setOperationAction(ISD::FMUL, Ty, Legal);
217 setOperationAction(ISD::FRINT, Ty, Legal);
218 setOperationAction(ISD::FSQRT, Ty, Legal);
219 setOperationAction(ISD::FSUB, Ty, Legal);
220 setOperationAction(ISD::VSELECT, Ty, Legal);
222 setOperationAction(ISD::SETCC, Ty, Legal);
223 setCondCodeAction(ISD::SETOGE, Ty, Expand);
224 setCondCodeAction(ISD::SETOGT, Ty, Expand);
225 setCondCodeAction(ISD::SETUGE, Ty, Expand);
226 setCondCodeAction(ISD::SETUGT, Ty, Expand);
227 setCondCodeAction(ISD::SETGE, Ty, Expand);
228 setCondCodeAction(ISD::SETGT, Ty, Expand);
233 MipsSETargetLowering::allowsUnalignedMemoryAccesses(EVT VT, bool *Fast) const {
234 MVT::SimpleValueType SVT = VT.getSimpleVT().SimpleTy;
247 SDValue MipsSETargetLowering::LowerOperation(SDValue Op,
248 SelectionDAG &DAG) const {
249 switch(Op.getOpcode()) {
250 case ISD::LOAD: return lowerLOAD(Op, DAG);
251 case ISD::STORE: return lowerSTORE(Op, DAG);
252 case ISD::SMUL_LOHI: return lowerMulDiv(Op, MipsISD::Mult, true, true, DAG);
253 case ISD::UMUL_LOHI: return lowerMulDiv(Op, MipsISD::Multu, true, true, DAG);
254 case ISD::MULHS: return lowerMulDiv(Op, MipsISD::Mult, false, true, DAG);
255 case ISD::MULHU: return lowerMulDiv(Op, MipsISD::Multu, false, true, DAG);
256 case ISD::MUL: return lowerMulDiv(Op, MipsISD::Mult, true, false, DAG);
257 case ISD::SDIVREM: return lowerMulDiv(Op, MipsISD::DivRem, true, true, DAG);
258 case ISD::UDIVREM: return lowerMulDiv(Op, MipsISD::DivRemU, true, true,
260 case ISD::INTRINSIC_WO_CHAIN: return lowerINTRINSIC_WO_CHAIN(Op, DAG);
261 case ISD::INTRINSIC_W_CHAIN: return lowerINTRINSIC_W_CHAIN(Op, DAG);
262 case ISD::INTRINSIC_VOID: return lowerINTRINSIC_VOID(Op, DAG);
263 case ISD::EXTRACT_VECTOR_ELT: return lowerEXTRACT_VECTOR_ELT(Op, DAG);
264 case ISD::BUILD_VECTOR: return lowerBUILD_VECTOR(Op, DAG);
265 case ISD::VECTOR_SHUFFLE: return lowerVECTOR_SHUFFLE(Op, DAG);
268 return MipsTargetLowering::LowerOperation(Op, DAG);
272 // Transforms a subgraph in CurDAG if the following pattern is found:
273 // (addc multLo, Lo0), (adde multHi, Hi0),
275 // multHi/Lo: product of multiplication
276 // Lo0: initial value of Lo register
277 // Hi0: initial value of Hi register
278 // Return true if pattern matching was successful.
279 static bool selectMADD(SDNode *ADDENode, SelectionDAG *CurDAG) {
280 // ADDENode's second operand must be a flag output of an ADDC node in order
281 // for the matching to be successful.
282 SDNode *ADDCNode = ADDENode->getOperand(2).getNode();
284 if (ADDCNode->getOpcode() != ISD::ADDC)
287 SDValue MultHi = ADDENode->getOperand(0);
288 SDValue MultLo = ADDCNode->getOperand(0);
289 SDNode *MultNode = MultHi.getNode();
290 unsigned MultOpc = MultHi.getOpcode();
292 // MultHi and MultLo must be generated by the same node,
293 if (MultLo.getNode() != MultNode)
296 // and it must be a multiplication.
297 if (MultOpc != ISD::SMUL_LOHI && MultOpc != ISD::UMUL_LOHI)
300 // MultLo amd MultHi must be the first and second output of MultNode
302 if (MultHi.getResNo() != 1 || MultLo.getResNo() != 0)
305 // Transform this to a MADD only if ADDENode and ADDCNode are the only users
306 // of the values of MultNode, in which case MultNode will be removed in later
308 // If there exist users other than ADDENode or ADDCNode, this function returns
309 // here, which will result in MultNode being mapped to a single MULT
310 // instruction node rather than a pair of MULT and MADD instructions being
312 if (!MultHi.hasOneUse() || !MultLo.hasOneUse())
317 // Initialize accumulator.
318 SDValue ACCIn = CurDAG->getNode(MipsISD::InsertLOHI, DL, MVT::Untyped,
319 ADDCNode->getOperand(1),
320 ADDENode->getOperand(1));
322 // create MipsMAdd(u) node
323 MultOpc = MultOpc == ISD::UMUL_LOHI ? MipsISD::MAddu : MipsISD::MAdd;
325 SDValue MAdd = CurDAG->getNode(MultOpc, DL, MVT::Untyped,
326 MultNode->getOperand(0),// Factor 0
327 MultNode->getOperand(1),// Factor 1
330 // replace uses of adde and addc here
331 if (!SDValue(ADDCNode, 0).use_empty()) {
332 SDValue LoIdx = CurDAG->getConstant(Mips::sub_lo, MVT::i32);
333 SDValue LoOut = CurDAG->getNode(MipsISD::ExtractLOHI, DL, MVT::i32, MAdd,
335 CurDAG->ReplaceAllUsesOfValueWith(SDValue(ADDCNode, 0), LoOut);
337 if (!SDValue(ADDENode, 0).use_empty()) {
338 SDValue HiIdx = CurDAG->getConstant(Mips::sub_hi, MVT::i32);
339 SDValue HiOut = CurDAG->getNode(MipsISD::ExtractLOHI, DL, MVT::i32, MAdd,
341 CurDAG->ReplaceAllUsesOfValueWith(SDValue(ADDENode, 0), HiOut);
348 // Transforms a subgraph in CurDAG if the following pattern is found:
349 // (addc Lo0, multLo), (sube Hi0, multHi),
351 // multHi/Lo: product of multiplication
352 // Lo0: initial value of Lo register
353 // Hi0: initial value of Hi register
354 // Return true if pattern matching was successful.
355 static bool selectMSUB(SDNode *SUBENode, SelectionDAG *CurDAG) {
356 // SUBENode's second operand must be a flag output of an SUBC node in order
357 // for the matching to be successful.
358 SDNode *SUBCNode = SUBENode->getOperand(2).getNode();
360 if (SUBCNode->getOpcode() != ISD::SUBC)
363 SDValue MultHi = SUBENode->getOperand(1);
364 SDValue MultLo = SUBCNode->getOperand(1);
365 SDNode *MultNode = MultHi.getNode();
366 unsigned MultOpc = MultHi.getOpcode();
368 // MultHi and MultLo must be generated by the same node,
369 if (MultLo.getNode() != MultNode)
372 // and it must be a multiplication.
373 if (MultOpc != ISD::SMUL_LOHI && MultOpc != ISD::UMUL_LOHI)
376 // MultLo amd MultHi must be the first and second output of MultNode
378 if (MultHi.getResNo() != 1 || MultLo.getResNo() != 0)
381 // Transform this to a MSUB only if SUBENode and SUBCNode are the only users
382 // of the values of MultNode, in which case MultNode will be removed in later
384 // If there exist users other than SUBENode or SUBCNode, this function returns
385 // here, which will result in MultNode being mapped to a single MULT
386 // instruction node rather than a pair of MULT and MSUB instructions being
388 if (!MultHi.hasOneUse() || !MultLo.hasOneUse())
393 // Initialize accumulator.
394 SDValue ACCIn = CurDAG->getNode(MipsISD::InsertLOHI, DL, MVT::Untyped,
395 SUBCNode->getOperand(0),
396 SUBENode->getOperand(0));
398 // create MipsSub(u) node
399 MultOpc = MultOpc == ISD::UMUL_LOHI ? MipsISD::MSubu : MipsISD::MSub;
401 SDValue MSub = CurDAG->getNode(MultOpc, DL, MVT::Glue,
402 MultNode->getOperand(0),// Factor 0
403 MultNode->getOperand(1),// Factor 1
406 // replace uses of sube and subc here
407 if (!SDValue(SUBCNode, 0).use_empty()) {
408 SDValue LoIdx = CurDAG->getConstant(Mips::sub_lo, MVT::i32);
409 SDValue LoOut = CurDAG->getNode(MipsISD::ExtractLOHI, DL, MVT::i32, MSub,
411 CurDAG->ReplaceAllUsesOfValueWith(SDValue(SUBCNode, 0), LoOut);
413 if (!SDValue(SUBENode, 0).use_empty()) {
414 SDValue HiIdx = CurDAG->getConstant(Mips::sub_hi, MVT::i32);
415 SDValue HiOut = CurDAG->getNode(MipsISD::ExtractLOHI, DL, MVT::i32, MSub,
417 CurDAG->ReplaceAllUsesOfValueWith(SDValue(SUBENode, 0), HiOut);
423 static SDValue performADDECombine(SDNode *N, SelectionDAG &DAG,
424 TargetLowering::DAGCombinerInfo &DCI,
425 const MipsSubtarget *Subtarget) {
426 if (DCI.isBeforeLegalize())
429 if (Subtarget->hasMips32() && N->getValueType(0) == MVT::i32 &&
431 return SDValue(N, 0);
436 // Fold zero extensions into MipsISD::VEXTRACT_[SZ]EXT_ELT
438 // Performs the following transformations:
439 // - Changes MipsISD::VEXTRACT_[SZ]EXT_ELT to zero extension if its
440 // sign/zero-extension is completely overwritten by the new one performed by
442 // - Removes redundant zero extensions performed by an ISD::AND.
443 static SDValue performANDCombine(SDNode *N, SelectionDAG &DAG,
444 TargetLowering::DAGCombinerInfo &DCI,
445 const MipsSubtarget *Subtarget) {
446 if (!Subtarget->hasMSA())
449 SDValue Op0 = N->getOperand(0);
450 SDValue Op1 = N->getOperand(1);
451 unsigned Op0Opcode = Op0->getOpcode();
453 // (and (MipsVExtract[SZ]Ext $a, $b, $c), imm:$d)
454 // where $d + 1 == 2^n and n == 32
455 // or $d + 1 == 2^n and n <= 32 and ZExt
456 // -> (MipsVExtractZExt $a, $b, $c)
457 if (Op0Opcode == MipsISD::VEXTRACT_SEXT_ELT ||
458 Op0Opcode == MipsISD::VEXTRACT_ZEXT_ELT) {
459 ConstantSDNode *Mask = dyn_cast<ConstantSDNode>(Op1);
464 int32_t Log2IfPositive = (Mask->getAPIntValue() + 1).exactLogBase2();
466 if (Log2IfPositive <= 0)
467 return SDValue(); // Mask+1 is not a power of 2
469 SDValue Op0Op2 = Op0->getOperand(2);
470 EVT ExtendTy = cast<VTSDNode>(Op0Op2)->getVT();
471 unsigned ExtendTySize = ExtendTy.getSizeInBits();
472 unsigned Log2 = Log2IfPositive;
474 if ((Op0Opcode == MipsISD::VEXTRACT_ZEXT_ELT && Log2 >= ExtendTySize) ||
475 Log2 == ExtendTySize) {
476 SDValue Ops[] = { Op0->getOperand(0), Op0->getOperand(1), Op0Op2 };
477 DAG.MorphNodeTo(Op0.getNode(), MipsISD::VEXTRACT_ZEXT_ELT,
478 Op0->getVTList(), Ops, Op0->getNumOperands());
486 static SDValue performSUBECombine(SDNode *N, SelectionDAG &DAG,
487 TargetLowering::DAGCombinerInfo &DCI,
488 const MipsSubtarget *Subtarget) {
489 if (DCI.isBeforeLegalize())
492 if (Subtarget->hasMips32() && N->getValueType(0) == MVT::i32 &&
494 return SDValue(N, 0);
499 static SDValue genConstMult(SDValue X, uint64_t C, SDLoc DL, EVT VT,
500 EVT ShiftTy, SelectionDAG &DAG) {
501 // Clear the upper (64 - VT.sizeInBits) bits.
502 C &= ((uint64_t)-1) >> (64 - VT.getSizeInBits());
506 return DAG.getConstant(0, VT);
512 // If c is power of 2, return (shl x, log2(c)).
513 if (isPowerOf2_64(C))
514 return DAG.getNode(ISD::SHL, DL, VT, X,
515 DAG.getConstant(Log2_64(C), ShiftTy));
517 unsigned Log2Ceil = Log2_64_Ceil(C);
518 uint64_t Floor = 1LL << Log2_64(C);
519 uint64_t Ceil = Log2Ceil == 64 ? 0LL : 1LL << Log2Ceil;
521 // If |c - floor_c| <= |c - ceil_c|,
522 // where floor_c = pow(2, floor(log2(c))) and ceil_c = pow(2, ceil(log2(c))),
523 // return (add constMult(x, floor_c), constMult(x, c - floor_c)).
524 if (C - Floor <= Ceil - C) {
525 SDValue Op0 = genConstMult(X, Floor, DL, VT, ShiftTy, DAG);
526 SDValue Op1 = genConstMult(X, C - Floor, DL, VT, ShiftTy, DAG);
527 return DAG.getNode(ISD::ADD, DL, VT, Op0, Op1);
530 // If |c - floor_c| > |c - ceil_c|,
531 // return (sub constMult(x, ceil_c), constMult(x, ceil_c - c)).
532 SDValue Op0 = genConstMult(X, Ceil, DL, VT, ShiftTy, DAG);
533 SDValue Op1 = genConstMult(X, Ceil - C, DL, VT, ShiftTy, DAG);
534 return DAG.getNode(ISD::SUB, DL, VT, Op0, Op1);
537 static SDValue performMULCombine(SDNode *N, SelectionDAG &DAG,
538 const TargetLowering::DAGCombinerInfo &DCI,
539 const MipsSETargetLowering *TL) {
540 EVT VT = N->getValueType(0);
542 if (ConstantSDNode *C = dyn_cast<ConstantSDNode>(N->getOperand(1)))
544 return genConstMult(N->getOperand(0), C->getZExtValue(), SDLoc(N),
545 VT, TL->getScalarShiftAmountTy(VT), DAG);
547 return SDValue(N, 0);
550 static SDValue performDSPShiftCombine(unsigned Opc, SDNode *N, EVT Ty,
552 const MipsSubtarget *Subtarget) {
553 // See if this is a vector splat immediate node.
554 APInt SplatValue, SplatUndef;
555 unsigned SplatBitSize;
557 unsigned EltSize = Ty.getVectorElementType().getSizeInBits();
558 BuildVectorSDNode *BV = dyn_cast<BuildVectorSDNode>(N->getOperand(1));
561 !BV->isConstantSplat(SplatValue, SplatUndef, SplatBitSize, HasAnyUndefs,
562 EltSize, !Subtarget->isLittle()) ||
563 (SplatBitSize != EltSize) ||
564 (SplatValue.getZExtValue() >= EltSize))
567 return DAG.getNode(Opc, SDLoc(N), Ty, N->getOperand(0),
568 DAG.getConstant(SplatValue.getZExtValue(), MVT::i32));
571 static SDValue performSHLCombine(SDNode *N, SelectionDAG &DAG,
572 TargetLowering::DAGCombinerInfo &DCI,
573 const MipsSubtarget *Subtarget) {
574 EVT Ty = N->getValueType(0);
576 if ((Ty != MVT::v2i16) && (Ty != MVT::v4i8))
579 return performDSPShiftCombine(MipsISD::SHLL_DSP, N, Ty, DAG, Subtarget);
582 // Fold sign-extensions into MipsISD::VEXTRACT_[SZ]EXT_ELT for MSA and fold
583 // constant splats into MipsISD::SHRA_DSP for DSPr2.
585 // Performs the following transformations:
586 // - Changes MipsISD::VEXTRACT_[SZ]EXT_ELT to sign extension if its
587 // sign/zero-extension is completely overwritten by the new one performed by
588 // the ISD::SRA and ISD::SHL nodes.
589 // - Removes redundant sign extensions performed by an ISD::SRA and ISD::SHL
592 // See performDSPShiftCombine for more information about the transformation
594 static SDValue performSRACombine(SDNode *N, SelectionDAG &DAG,
595 TargetLowering::DAGCombinerInfo &DCI,
596 const MipsSubtarget *Subtarget) {
597 EVT Ty = N->getValueType(0);
599 if (Subtarget->hasMSA()) {
600 SDValue Op0 = N->getOperand(0);
601 SDValue Op1 = N->getOperand(1);
603 // (sra (shl (MipsVExtract[SZ]Ext $a, $b, $c), imm:$d), imm:$d)
604 // where $d + sizeof($c) == 32
605 // or $d + sizeof($c) <= 32 and SExt
606 // -> (MipsVExtractSExt $a, $b, $c)
607 if (Op0->getOpcode() == ISD::SHL && Op1 == Op0->getOperand(1)) {
608 SDValue Op0Op0 = Op0->getOperand(0);
609 ConstantSDNode *ShAmount = dyn_cast<ConstantSDNode>(Op1);
614 if (Op0Op0->getOpcode() != MipsISD::VEXTRACT_SEXT_ELT &&
615 Op0Op0->getOpcode() != MipsISD::VEXTRACT_ZEXT_ELT)
618 EVT ExtendTy = cast<VTSDNode>(Op0Op0->getOperand(2))->getVT();
619 unsigned TotalBits = ShAmount->getZExtValue() + ExtendTy.getSizeInBits();
621 if (TotalBits == 32 ||
622 (Op0Op0->getOpcode() == MipsISD::VEXTRACT_SEXT_ELT &&
624 SDValue Ops[] = { Op0Op0->getOperand(0), Op0Op0->getOperand(1),
625 Op0Op0->getOperand(2) };
626 DAG.MorphNodeTo(Op0Op0.getNode(), MipsISD::VEXTRACT_SEXT_ELT,
627 Op0Op0->getVTList(), Ops, Op0Op0->getNumOperands());
633 if ((Ty != MVT::v2i16) && ((Ty != MVT::v4i8) || !Subtarget->hasDSPR2()))
636 return performDSPShiftCombine(MipsISD::SHRA_DSP, N, Ty, DAG, Subtarget);
640 static SDValue performSRLCombine(SDNode *N, SelectionDAG &DAG,
641 TargetLowering::DAGCombinerInfo &DCI,
642 const MipsSubtarget *Subtarget) {
643 EVT Ty = N->getValueType(0);
645 if (((Ty != MVT::v2i16) || !Subtarget->hasDSPR2()) && (Ty != MVT::v4i8))
648 return performDSPShiftCombine(MipsISD::SHRL_DSP, N, Ty, DAG, Subtarget);
651 static bool isLegalDSPCondCode(EVT Ty, ISD::CondCode CC) {
652 bool IsV216 = (Ty == MVT::v2i16);
656 case ISD::SETNE: return true;
660 case ISD::SETGE: return IsV216;
664 case ISD::SETUGE: return !IsV216;
665 default: return false;
669 static SDValue performSETCCCombine(SDNode *N, SelectionDAG &DAG) {
670 EVT Ty = N->getValueType(0);
672 if ((Ty != MVT::v2i16) && (Ty != MVT::v4i8))
675 if (!isLegalDSPCondCode(Ty, cast<CondCodeSDNode>(N->getOperand(2))->get()))
678 return DAG.getNode(MipsISD::SETCC_DSP, SDLoc(N), Ty, N->getOperand(0),
679 N->getOperand(1), N->getOperand(2));
682 static SDValue performVSELECTCombine(SDNode *N, SelectionDAG &DAG) {
683 EVT Ty = N->getValueType(0);
685 if (Ty.is128BitVector() && Ty.isInteger()) {
686 // Try the following combines:
687 // (vselect (setcc $a, $b, SETLT), $b, $a)) -> (vsmax $a, $b)
688 // (vselect (setcc $a, $b, SETLE), $b, $a)) -> (vsmax $a, $b)
689 // (vselect (setcc $a, $b, SETLT), $a, $b)) -> (vsmin $a, $b)
690 // (vselect (setcc $a, $b, SETLE), $a, $b)) -> (vsmin $a, $b)
691 // (vselect (setcc $a, $b, SETULT), $b, $a)) -> (vumax $a, $b)
692 // (vselect (setcc $a, $b, SETULE), $b, $a)) -> (vumax $a, $b)
693 // (vselect (setcc $a, $b, SETULT), $a, $b)) -> (vumin $a, $b)
694 // (vselect (setcc $a, $b, SETULE), $a, $b)) -> (vumin $a, $b)
695 // SETGT/SETGE/SETUGT/SETUGE variants of these will show up initially but
696 // will be expanded to equivalent SETLT/SETLE/SETULT/SETULE versions by the
698 SDValue Op0 = N->getOperand(0);
700 if (Op0->getOpcode() != ISD::SETCC)
703 ISD::CondCode CondCode = cast<CondCodeSDNode>(Op0->getOperand(2))->get();
706 if (CondCode == ISD::SETLT || CondCode == ISD::SETLE)
708 else if (CondCode == ISD::SETULT || CondCode == ISD::SETULE)
713 SDValue Op1 = N->getOperand(1);
714 SDValue Op2 = N->getOperand(2);
715 SDValue Op0Op0 = Op0->getOperand(0);
716 SDValue Op0Op1 = Op0->getOperand(1);
718 if (Op1 == Op0Op0 && Op2 == Op0Op1)
719 return DAG.getNode(Signed ? MipsISD::VSMIN : MipsISD::VUMIN, SDLoc(N),
721 else if (Op1 == Op0Op1 && Op2 == Op0Op0)
722 return DAG.getNode(Signed ? MipsISD::VSMAX : MipsISD::VUMAX, SDLoc(N),
724 } else if ((Ty == MVT::v2i16) || (Ty == MVT::v4i8)) {
725 SDValue SetCC = N->getOperand(0);
727 if (SetCC.getOpcode() != MipsISD::SETCC_DSP)
730 return DAG.getNode(MipsISD::SELECT_CC_DSP, SDLoc(N), Ty,
731 SetCC.getOperand(0), SetCC.getOperand(1),
732 N->getOperand(1), N->getOperand(2), SetCC.getOperand(2));
738 static SDValue performXORCombine(SDNode *N, SelectionDAG &DAG,
739 const MipsSubtarget *Subtarget) {
740 EVT Ty = N->getValueType(0);
742 if (Subtarget->hasMSA() && Ty.is128BitVector() && Ty.isInteger()) {
743 // Try the following combines:
744 // (xor (or $a, $b), (build_vector allones))
745 // (xor (or $a, $b), (bitcast (build_vector allones)))
746 SDValue Op0 = N->getOperand(0);
747 SDValue Op1 = N->getOperand(1);
750 if (ISD::isBuildVectorAllOnes(Op0.getNode()))
752 else if (ISD::isBuildVectorAllOnes(Op1.getNode()))
757 if (NotOp->getOpcode() == ISD::OR)
758 return DAG.getNode(MipsISD::VNOR, SDLoc(N), Ty, NotOp->getOperand(0),
759 NotOp->getOperand(1));
766 MipsSETargetLowering::PerformDAGCombine(SDNode *N, DAGCombinerInfo &DCI) const {
767 SelectionDAG &DAG = DCI.DAG;
770 switch (N->getOpcode()) {
772 return performADDECombine(N, DAG, DCI, Subtarget);
774 Val = performANDCombine(N, DAG, DCI, Subtarget);
777 return performSUBECombine(N, DAG, DCI, Subtarget);
779 return performMULCombine(N, DAG, DCI, this);
781 return performSHLCombine(N, DAG, DCI, Subtarget);
783 return performSRACombine(N, DAG, DCI, Subtarget);
785 return performSRLCombine(N, DAG, DCI, Subtarget);
787 return performVSELECTCombine(N, DAG);
789 Val = performXORCombine(N, DAG, Subtarget);
792 Val = performSETCCCombine(N, DAG);
799 return MipsTargetLowering::PerformDAGCombine(N, DCI);
803 MipsSETargetLowering::EmitInstrWithCustomInserter(MachineInstr *MI,
804 MachineBasicBlock *BB) const {
805 switch (MI->getOpcode()) {
807 return MipsTargetLowering::EmitInstrWithCustomInserter(MI, BB);
808 case Mips::BPOSGE32_PSEUDO:
809 return emitBPOSGE32(MI, BB);
810 case Mips::SNZ_B_PSEUDO:
811 return emitMSACBranchPseudo(MI, BB, Mips::BNZ_B);
812 case Mips::SNZ_H_PSEUDO:
813 return emitMSACBranchPseudo(MI, BB, Mips::BNZ_H);
814 case Mips::SNZ_W_PSEUDO:
815 return emitMSACBranchPseudo(MI, BB, Mips::BNZ_W);
816 case Mips::SNZ_D_PSEUDO:
817 return emitMSACBranchPseudo(MI, BB, Mips::BNZ_D);
818 case Mips::SNZ_V_PSEUDO:
819 return emitMSACBranchPseudo(MI, BB, Mips::BNZ_V);
820 case Mips::SZ_B_PSEUDO:
821 return emitMSACBranchPseudo(MI, BB, Mips::BZ_B);
822 case Mips::SZ_H_PSEUDO:
823 return emitMSACBranchPseudo(MI, BB, Mips::BZ_H);
824 case Mips::SZ_W_PSEUDO:
825 return emitMSACBranchPseudo(MI, BB, Mips::BZ_W);
826 case Mips::SZ_D_PSEUDO:
827 return emitMSACBranchPseudo(MI, BB, Mips::BZ_D);
828 case Mips::SZ_V_PSEUDO:
829 return emitMSACBranchPseudo(MI, BB, Mips::BZ_V);
830 case Mips::COPY_FW_PSEUDO:
831 return emitCOPY_FW(MI, BB);
832 case Mips::COPY_FD_PSEUDO:
833 return emitCOPY_FD(MI, BB);
837 bool MipsSETargetLowering::
838 isEligibleForTailCallOptimization(const MipsCC &MipsCCInfo,
839 unsigned NextStackOffset,
840 const MipsFunctionInfo& FI) const {
841 if (!EnableMipsTailCalls)
844 // Return false if either the callee or caller has a byval argument.
845 if (MipsCCInfo.hasByValArg() || FI.hasByvalArg())
848 // Return true if the callee's argument area is no larger than the
850 return NextStackOffset <= FI.getIncomingArgSize();
853 void MipsSETargetLowering::
854 getOpndList(SmallVectorImpl<SDValue> &Ops,
855 std::deque< std::pair<unsigned, SDValue> > &RegsToPass,
856 bool IsPICCall, bool GlobalOrExternal, bool InternalLinkage,
857 CallLoweringInfo &CLI, SDValue Callee, SDValue Chain) const {
858 // T9 should contain the address of the callee function if
859 // -reloction-model=pic or it is an indirect call.
860 if (IsPICCall || !GlobalOrExternal) {
861 unsigned T9Reg = IsN64 ? Mips::T9_64 : Mips::T9;
862 RegsToPass.push_front(std::make_pair(T9Reg, Callee));
864 Ops.push_back(Callee);
866 MipsTargetLowering::getOpndList(Ops, RegsToPass, IsPICCall, GlobalOrExternal,
867 InternalLinkage, CLI, Callee, Chain);
870 SDValue MipsSETargetLowering::lowerLOAD(SDValue Op, SelectionDAG &DAG) const {
871 LoadSDNode &Nd = *cast<LoadSDNode>(Op);
873 if (Nd.getMemoryVT() != MVT::f64 || !NoDPLoadStore)
874 return MipsTargetLowering::lowerLOAD(Op, DAG);
876 // Replace a double precision load with two i32 loads and a buildpair64.
878 SDValue Ptr = Nd.getBasePtr(), Chain = Nd.getChain();
879 EVT PtrVT = Ptr.getValueType();
881 // i32 load from lower address.
882 SDValue Lo = DAG.getLoad(MVT::i32, DL, Chain, Ptr,
883 MachinePointerInfo(), Nd.isVolatile(),
884 Nd.isNonTemporal(), Nd.isInvariant(),
887 // i32 load from higher address.
888 Ptr = DAG.getNode(ISD::ADD, DL, PtrVT, Ptr, DAG.getConstant(4, PtrVT));
889 SDValue Hi = DAG.getLoad(MVT::i32, DL, Lo.getValue(1), Ptr,
890 MachinePointerInfo(), Nd.isVolatile(),
891 Nd.isNonTemporal(), Nd.isInvariant(),
892 std::min(Nd.getAlignment(), 4U));
894 if (!Subtarget->isLittle())
897 SDValue BP = DAG.getNode(MipsISD::BuildPairF64, DL, MVT::f64, Lo, Hi);
898 SDValue Ops[2] = {BP, Hi.getValue(1)};
899 return DAG.getMergeValues(Ops, 2, DL);
902 SDValue MipsSETargetLowering::lowerSTORE(SDValue Op, SelectionDAG &DAG) const {
903 StoreSDNode &Nd = *cast<StoreSDNode>(Op);
905 if (Nd.getMemoryVT() != MVT::f64 || !NoDPLoadStore)
906 return MipsTargetLowering::lowerSTORE(Op, DAG);
908 // Replace a double precision store with two extractelement64s and i32 stores.
910 SDValue Val = Nd.getValue(), Ptr = Nd.getBasePtr(), Chain = Nd.getChain();
911 EVT PtrVT = Ptr.getValueType();
912 SDValue Lo = DAG.getNode(MipsISD::ExtractElementF64, DL, MVT::i32,
913 Val, DAG.getConstant(0, MVT::i32));
914 SDValue Hi = DAG.getNode(MipsISD::ExtractElementF64, DL, MVT::i32,
915 Val, DAG.getConstant(1, MVT::i32));
917 if (!Subtarget->isLittle())
920 // i32 store to lower address.
921 Chain = DAG.getStore(Chain, DL, Lo, Ptr, MachinePointerInfo(),
922 Nd.isVolatile(), Nd.isNonTemporal(), Nd.getAlignment(),
925 // i32 store to higher address.
926 Ptr = DAG.getNode(ISD::ADD, DL, PtrVT, Ptr, DAG.getConstant(4, PtrVT));
927 return DAG.getStore(Chain, DL, Hi, Ptr, MachinePointerInfo(),
928 Nd.isVolatile(), Nd.isNonTemporal(),
929 std::min(Nd.getAlignment(), 4U), Nd.getTBAAInfo());
932 SDValue MipsSETargetLowering::lowerMulDiv(SDValue Op, unsigned NewOpc,
933 bool HasLo, bool HasHi,
934 SelectionDAG &DAG) const {
935 EVT Ty = Op.getOperand(0).getValueType();
937 SDValue Mult = DAG.getNode(NewOpc, DL, MVT::Untyped,
938 Op.getOperand(0), Op.getOperand(1));
942 Lo = DAG.getNode(MipsISD::ExtractLOHI, DL, Ty, Mult,
943 DAG.getConstant(Mips::sub_lo, MVT::i32));
945 Hi = DAG.getNode(MipsISD::ExtractLOHI, DL, Ty, Mult,
946 DAG.getConstant(Mips::sub_hi, MVT::i32));
948 if (!HasLo || !HasHi)
949 return HasLo ? Lo : Hi;
951 SDValue Vals[] = { Lo, Hi };
952 return DAG.getMergeValues(Vals, 2, DL);
956 static SDValue initAccumulator(SDValue In, SDLoc DL, SelectionDAG &DAG) {
957 SDValue InLo = DAG.getNode(ISD::EXTRACT_ELEMENT, DL, MVT::i32, In,
958 DAG.getConstant(0, MVT::i32));
959 SDValue InHi = DAG.getNode(ISD::EXTRACT_ELEMENT, DL, MVT::i32, In,
960 DAG.getConstant(1, MVT::i32));
961 return DAG.getNode(MipsISD::InsertLOHI, DL, MVT::Untyped, InLo, InHi);
964 static SDValue extractLOHI(SDValue Op, SDLoc DL, SelectionDAG &DAG) {
965 SDValue Lo = DAG.getNode(MipsISD::ExtractLOHI, DL, MVT::i32, Op,
966 DAG.getConstant(Mips::sub_lo, MVT::i32));
967 SDValue Hi = DAG.getNode(MipsISD::ExtractLOHI, DL, MVT::i32, Op,
968 DAG.getConstant(Mips::sub_hi, MVT::i32));
969 return DAG.getNode(ISD::BUILD_PAIR, DL, MVT::i64, Lo, Hi);
972 // This function expands mips intrinsic nodes which have 64-bit input operands
975 // out64 = intrinsic-node in64
977 // lo = copy (extract-element (in64, 0))
978 // hi = copy (extract-element (in64, 1))
979 // mips-specific-node
982 // out64 = merge-values (v0, v1)
984 static SDValue lowerDSPIntr(SDValue Op, SelectionDAG &DAG, unsigned Opc) {
986 bool HasChainIn = Op->getOperand(0).getValueType() == MVT::Other;
987 SmallVector<SDValue, 3> Ops;
990 // See if Op has a chain input.
992 Ops.push_back(Op->getOperand(OpNo++));
994 // The next operand is the intrinsic opcode.
995 assert(Op->getOperand(OpNo).getOpcode() == ISD::TargetConstant);
997 // See if the next operand has type i64.
998 SDValue Opnd = Op->getOperand(++OpNo), In64;
1000 if (Opnd.getValueType() == MVT::i64)
1001 In64 = initAccumulator(Opnd, DL, DAG);
1003 Ops.push_back(Opnd);
1005 // Push the remaining operands.
1006 for (++OpNo ; OpNo < Op->getNumOperands(); ++OpNo)
1007 Ops.push_back(Op->getOperand(OpNo));
1009 // Add In64 to the end of the list.
1011 Ops.push_back(In64);
1014 SmallVector<EVT, 2> ResTys;
1016 for (SDNode::value_iterator I = Op->value_begin(), E = Op->value_end();
1018 ResTys.push_back((*I == MVT::i64) ? MVT::Untyped : *I);
1021 SDValue Val = DAG.getNode(Opc, DL, ResTys, &Ops[0], Ops.size());
1022 SDValue Out = (ResTys[0] == MVT::Untyped) ? extractLOHI(Val, DL, DAG) : Val;
1027 assert(Val->getValueType(1) == MVT::Other);
1028 SDValue Vals[] = { Out, SDValue(Val.getNode(), 1) };
1029 return DAG.getMergeValues(Vals, 2, DL);
1032 // Lower an MSA copy intrinsic into the specified SelectionDAG node
1033 static SDValue lowerMSACopyIntr(SDValue Op, SelectionDAG &DAG, unsigned Opc) {
1035 SDValue Vec = Op->getOperand(1);
1036 SDValue Idx = Op->getOperand(2);
1037 EVT ResTy = Op->getValueType(0);
1038 EVT EltTy = Vec->getValueType(0).getVectorElementType();
1040 SDValue Result = DAG.getNode(Opc, DL, ResTy, Vec, Idx,
1041 DAG.getValueType(EltTy));
1046 // Lower an MSA insert intrinsic into the specified SelectionDAG node
1047 static SDValue lowerMSAInsertIntr(SDValue Op, SelectionDAG &DAG, unsigned Opc) {
1049 SDValue Op0 = Op->getOperand(1);
1050 SDValue Op1 = Op->getOperand(2);
1051 SDValue Op2 = Op->getOperand(3);
1052 EVT ResTy = Op->getValueType(0);
1054 SDValue Result = DAG.getNode(Opc, DL, ResTy, Op0, Op2, Op1);
1060 lowerMSASplatImm(SDLoc DL, EVT ResTy, SDValue ImmOp, SelectionDAG &DAG) {
1061 EVT ViaVecTy = ResTy;
1062 SmallVector<SDValue, 16> Ops;
1065 if (ViaVecTy == MVT::v2i64) {
1066 ImmHiOp = DAG.getNode(ISD::SRA, DL, MVT::i32, ImmOp,
1067 DAG.getConstant(31, MVT::i32));
1068 for (unsigned i = 0; i < ViaVecTy.getVectorNumElements(); ++i) {
1069 Ops.push_back(ImmHiOp);
1070 Ops.push_back(ImmOp);
1072 ViaVecTy = MVT::v4i32;
1074 for (unsigned i = 0; i < ResTy.getVectorNumElements(); ++i)
1075 Ops.push_back(ImmOp);
1078 SDValue Result = DAG.getNode(ISD::BUILD_VECTOR, DL, ViaVecTy, &Ops[0],
1081 if (ResTy != ViaVecTy)
1082 Result = DAG.getNode(ISD::BITCAST, DL, ResTy, Result);
1088 lowerMSASplatImm(SDValue Op, unsigned ImmOp, SelectionDAG &DAG) {
1089 return lowerMSASplatImm(SDLoc(Op), Op->getValueType(0),
1090 Op->getOperand(ImmOp), DAG);
1093 SDValue MipsSETargetLowering::lowerINTRINSIC_WO_CHAIN(SDValue Op,
1094 SelectionDAG &DAG) const {
1097 switch (cast<ConstantSDNode>(Op->getOperand(0))->getZExtValue()) {
1100 case Intrinsic::mips_shilo:
1101 return lowerDSPIntr(Op, DAG, MipsISD::SHILO);
1102 case Intrinsic::mips_dpau_h_qbl:
1103 return lowerDSPIntr(Op, DAG, MipsISD::DPAU_H_QBL);
1104 case Intrinsic::mips_dpau_h_qbr:
1105 return lowerDSPIntr(Op, DAG, MipsISD::DPAU_H_QBR);
1106 case Intrinsic::mips_dpsu_h_qbl:
1107 return lowerDSPIntr(Op, DAG, MipsISD::DPSU_H_QBL);
1108 case Intrinsic::mips_dpsu_h_qbr:
1109 return lowerDSPIntr(Op, DAG, MipsISD::DPSU_H_QBR);
1110 case Intrinsic::mips_dpa_w_ph:
1111 return lowerDSPIntr(Op, DAG, MipsISD::DPA_W_PH);
1112 case Intrinsic::mips_dps_w_ph:
1113 return lowerDSPIntr(Op, DAG, MipsISD::DPS_W_PH);
1114 case Intrinsic::mips_dpax_w_ph:
1115 return lowerDSPIntr(Op, DAG, MipsISD::DPAX_W_PH);
1116 case Intrinsic::mips_dpsx_w_ph:
1117 return lowerDSPIntr(Op, DAG, MipsISD::DPSX_W_PH);
1118 case Intrinsic::mips_mulsa_w_ph:
1119 return lowerDSPIntr(Op, DAG, MipsISD::MULSA_W_PH);
1120 case Intrinsic::mips_mult:
1121 return lowerDSPIntr(Op, DAG, MipsISD::Mult);
1122 case Intrinsic::mips_multu:
1123 return lowerDSPIntr(Op, DAG, MipsISD::Multu);
1124 case Intrinsic::mips_madd:
1125 return lowerDSPIntr(Op, DAG, MipsISD::MAdd);
1126 case Intrinsic::mips_maddu:
1127 return lowerDSPIntr(Op, DAG, MipsISD::MAddu);
1128 case Intrinsic::mips_msub:
1129 return lowerDSPIntr(Op, DAG, MipsISD::MSub);
1130 case Intrinsic::mips_msubu:
1131 return lowerDSPIntr(Op, DAG, MipsISD::MSubu);
1132 case Intrinsic::mips_addv_b:
1133 case Intrinsic::mips_addv_h:
1134 case Intrinsic::mips_addv_w:
1135 case Intrinsic::mips_addv_d:
1136 return DAG.getNode(ISD::ADD, DL, Op->getValueType(0), Op->getOperand(1),
1138 case Intrinsic::mips_addvi_b:
1139 case Intrinsic::mips_addvi_h:
1140 case Intrinsic::mips_addvi_w:
1141 case Intrinsic::mips_addvi_d:
1142 return DAG.getNode(ISD::ADD, DL, Op->getValueType(0), Op->getOperand(1),
1143 lowerMSASplatImm(Op, 2, DAG));
1144 case Intrinsic::mips_and_v:
1145 return DAG.getNode(ISD::AND, DL, Op->getValueType(0), Op->getOperand(1),
1147 case Intrinsic::mips_andi_b:
1148 return DAG.getNode(ISD::AND, DL, Op->getValueType(0), Op->getOperand(1),
1149 lowerMSASplatImm(Op, 2, DAG));
1150 case Intrinsic::mips_bnz_b:
1151 case Intrinsic::mips_bnz_h:
1152 case Intrinsic::mips_bnz_w:
1153 case Intrinsic::mips_bnz_d:
1154 return DAG.getNode(MipsISD::VALL_NONZERO, DL, Op->getValueType(0),
1156 case Intrinsic::mips_bnz_v:
1157 return DAG.getNode(MipsISD::VANY_NONZERO, DL, Op->getValueType(0),
1159 case Intrinsic::mips_bsel_v:
1160 return DAG.getNode(ISD::VSELECT, DL, Op->getValueType(0),
1161 Op->getOperand(1), Op->getOperand(2),
1163 case Intrinsic::mips_bseli_b:
1164 return DAG.getNode(ISD::VSELECT, DL, Op->getValueType(0),
1165 Op->getOperand(1), Op->getOperand(2),
1166 lowerMSASplatImm(Op, 3, DAG));
1167 case Intrinsic::mips_bz_b:
1168 case Intrinsic::mips_bz_h:
1169 case Intrinsic::mips_bz_w:
1170 case Intrinsic::mips_bz_d:
1171 return DAG.getNode(MipsISD::VALL_ZERO, DL, Op->getValueType(0),
1173 case Intrinsic::mips_bz_v:
1174 return DAG.getNode(MipsISD::VANY_ZERO, DL, Op->getValueType(0),
1176 case Intrinsic::mips_ceq_b:
1177 case Intrinsic::mips_ceq_h:
1178 case Intrinsic::mips_ceq_w:
1179 case Intrinsic::mips_ceq_d:
1180 return DAG.getSetCC(DL, Op->getValueType(0), Op->getOperand(1),
1181 Op->getOperand(2), ISD::SETEQ);
1182 case Intrinsic::mips_ceqi_b:
1183 case Intrinsic::mips_ceqi_h:
1184 case Intrinsic::mips_ceqi_w:
1185 case Intrinsic::mips_ceqi_d:
1186 return DAG.getSetCC(DL, Op->getValueType(0), Op->getOperand(1),
1187 lowerMSASplatImm(Op, 2, DAG), ISD::SETEQ);
1188 case Intrinsic::mips_cle_s_b:
1189 case Intrinsic::mips_cle_s_h:
1190 case Intrinsic::mips_cle_s_w:
1191 case Intrinsic::mips_cle_s_d:
1192 return DAG.getSetCC(DL, Op->getValueType(0), Op->getOperand(1),
1193 Op->getOperand(2), ISD::SETLE);
1194 case Intrinsic::mips_clei_s_b:
1195 case Intrinsic::mips_clei_s_h:
1196 case Intrinsic::mips_clei_s_w:
1197 case Intrinsic::mips_clei_s_d:
1198 return DAG.getSetCC(DL, Op->getValueType(0), Op->getOperand(1),
1199 lowerMSASplatImm(Op, 2, DAG), ISD::SETLE);
1200 case Intrinsic::mips_cle_u_b:
1201 case Intrinsic::mips_cle_u_h:
1202 case Intrinsic::mips_cle_u_w:
1203 case Intrinsic::mips_cle_u_d:
1204 return DAG.getSetCC(DL, Op->getValueType(0), Op->getOperand(1),
1205 Op->getOperand(2), ISD::SETULE);
1206 case Intrinsic::mips_clei_u_b:
1207 case Intrinsic::mips_clei_u_h:
1208 case Intrinsic::mips_clei_u_w:
1209 case Intrinsic::mips_clei_u_d:
1210 return DAG.getSetCC(DL, Op->getValueType(0), Op->getOperand(1),
1211 lowerMSASplatImm(Op, 2, DAG), ISD::SETULE);
1212 case Intrinsic::mips_clt_s_b:
1213 case Intrinsic::mips_clt_s_h:
1214 case Intrinsic::mips_clt_s_w:
1215 case Intrinsic::mips_clt_s_d:
1216 return DAG.getSetCC(DL, Op->getValueType(0), Op->getOperand(1),
1217 Op->getOperand(2), ISD::SETLT);
1218 case Intrinsic::mips_clti_s_b:
1219 case Intrinsic::mips_clti_s_h:
1220 case Intrinsic::mips_clti_s_w:
1221 case Intrinsic::mips_clti_s_d:
1222 return DAG.getSetCC(DL, Op->getValueType(0), Op->getOperand(1),
1223 lowerMSASplatImm(Op, 2, DAG), ISD::SETLT);
1224 case Intrinsic::mips_clt_u_b:
1225 case Intrinsic::mips_clt_u_h:
1226 case Intrinsic::mips_clt_u_w:
1227 case Intrinsic::mips_clt_u_d:
1228 return DAG.getSetCC(DL, Op->getValueType(0), Op->getOperand(1),
1229 Op->getOperand(2), ISD::SETULT);
1230 case Intrinsic::mips_clti_u_b:
1231 case Intrinsic::mips_clti_u_h:
1232 case Intrinsic::mips_clti_u_w:
1233 case Intrinsic::mips_clti_u_d:
1234 return DAG.getSetCC(DL, Op->getValueType(0), Op->getOperand(1),
1235 lowerMSASplatImm(Op, 2, DAG), ISD::SETULT);
1236 case Intrinsic::mips_copy_s_b:
1237 case Intrinsic::mips_copy_s_h:
1238 case Intrinsic::mips_copy_s_w:
1239 return lowerMSACopyIntr(Op, DAG, MipsISD::VEXTRACT_SEXT_ELT);
1240 case Intrinsic::mips_copy_u_b:
1241 case Intrinsic::mips_copy_u_h:
1242 case Intrinsic::mips_copy_u_w:
1243 return lowerMSACopyIntr(Op, DAG, MipsISD::VEXTRACT_ZEXT_ELT);
1244 case Intrinsic::mips_div_s_b:
1245 case Intrinsic::mips_div_s_h:
1246 case Intrinsic::mips_div_s_w:
1247 case Intrinsic::mips_div_s_d:
1248 return DAG.getNode(ISD::SDIV, DL, Op->getValueType(0), Op->getOperand(1),
1250 case Intrinsic::mips_div_u_b:
1251 case Intrinsic::mips_div_u_h:
1252 case Intrinsic::mips_div_u_w:
1253 case Intrinsic::mips_div_u_d:
1254 return DAG.getNode(ISD::UDIV, DL, Op->getValueType(0), Op->getOperand(1),
1256 case Intrinsic::mips_fadd_w:
1257 case Intrinsic::mips_fadd_d:
1258 return DAG.getNode(ISD::FADD, DL, Op->getValueType(0), Op->getOperand(1),
1260 // Don't lower mips_fcaf_[wd] since LLVM folds SETFALSE condcodes away
1261 case Intrinsic::mips_fceq_w:
1262 case Intrinsic::mips_fceq_d:
1263 return DAG.getSetCC(DL, Op->getValueType(0), Op->getOperand(1),
1264 Op->getOperand(2), ISD::SETOEQ);
1265 case Intrinsic::mips_fcle_w:
1266 case Intrinsic::mips_fcle_d:
1267 return DAG.getSetCC(DL, Op->getValueType(0), Op->getOperand(1),
1268 Op->getOperand(2), ISD::SETOLE);
1269 case Intrinsic::mips_fclt_w:
1270 case Intrinsic::mips_fclt_d:
1271 return DAG.getSetCC(DL, Op->getValueType(0), Op->getOperand(1),
1272 Op->getOperand(2), ISD::SETOLT);
1273 case Intrinsic::mips_fcne_w:
1274 case Intrinsic::mips_fcne_d:
1275 return DAG.getSetCC(DL, Op->getValueType(0), Op->getOperand(1),
1276 Op->getOperand(2), ISD::SETONE);
1277 case Intrinsic::mips_fcor_w:
1278 case Intrinsic::mips_fcor_d:
1279 return DAG.getSetCC(DL, Op->getValueType(0), Op->getOperand(1),
1280 Op->getOperand(2), ISD::SETO);
1281 case Intrinsic::mips_fcueq_w:
1282 case Intrinsic::mips_fcueq_d:
1283 return DAG.getSetCC(DL, Op->getValueType(0), Op->getOperand(1),
1284 Op->getOperand(2), ISD::SETUEQ);
1285 case Intrinsic::mips_fcule_w:
1286 case Intrinsic::mips_fcule_d:
1287 return DAG.getSetCC(DL, Op->getValueType(0), Op->getOperand(1),
1288 Op->getOperand(2), ISD::SETULE);
1289 case Intrinsic::mips_fcult_w:
1290 case Intrinsic::mips_fcult_d:
1291 return DAG.getSetCC(DL, Op->getValueType(0), Op->getOperand(1),
1292 Op->getOperand(2), ISD::SETULT);
1293 case Intrinsic::mips_fcun_w:
1294 case Intrinsic::mips_fcun_d:
1295 return DAG.getSetCC(DL, Op->getValueType(0), Op->getOperand(1),
1296 Op->getOperand(2), ISD::SETUO);
1297 case Intrinsic::mips_fcune_w:
1298 case Intrinsic::mips_fcune_d:
1299 return DAG.getSetCC(DL, Op->getValueType(0), Op->getOperand(1),
1300 Op->getOperand(2), ISD::SETUNE);
1301 case Intrinsic::mips_fdiv_w:
1302 case Intrinsic::mips_fdiv_d:
1303 return DAG.getNode(ISD::FDIV, DL, Op->getValueType(0), Op->getOperand(1),
1305 case Intrinsic::mips_fill_b:
1306 case Intrinsic::mips_fill_h:
1307 case Intrinsic::mips_fill_w: {
1308 SmallVector<SDValue, 16> Ops;
1309 EVT ResTy = Op->getValueType(0);
1311 for (unsigned i = 0; i < ResTy.getVectorNumElements(); ++i)
1312 Ops.push_back(Op->getOperand(1));
1314 return DAG.getNode(ISD::BUILD_VECTOR, DL, ResTy, &Ops[0],
1317 case Intrinsic::mips_flog2_w:
1318 case Intrinsic::mips_flog2_d:
1319 return DAG.getNode(ISD::FLOG2, DL, Op->getValueType(0), Op->getOperand(1));
1320 case Intrinsic::mips_fmul_w:
1321 case Intrinsic::mips_fmul_d:
1322 return DAG.getNode(ISD::FMUL, DL, Op->getValueType(0), Op->getOperand(1),
1324 case Intrinsic::mips_frint_w:
1325 case Intrinsic::mips_frint_d:
1326 return DAG.getNode(ISD::FRINT, DL, Op->getValueType(0), Op->getOperand(1));
1327 case Intrinsic::mips_fsqrt_w:
1328 case Intrinsic::mips_fsqrt_d:
1329 return DAG.getNode(ISD::FSQRT, DL, Op->getValueType(0), Op->getOperand(1));
1330 case Intrinsic::mips_fsub_w:
1331 case Intrinsic::mips_fsub_d:
1332 return DAG.getNode(ISD::FSUB, DL, Op->getValueType(0), Op->getOperand(1),
1334 case Intrinsic::mips_ilvev_b:
1335 case Intrinsic::mips_ilvev_h:
1336 case Intrinsic::mips_ilvev_w:
1337 case Intrinsic::mips_ilvev_d:
1338 return DAG.getNode(MipsISD::ILVEV, DL, Op->getValueType(0),
1339 Op->getOperand(1), Op->getOperand(2));
1340 case Intrinsic::mips_ilvl_b:
1341 case Intrinsic::mips_ilvl_h:
1342 case Intrinsic::mips_ilvl_w:
1343 case Intrinsic::mips_ilvl_d:
1344 return DAG.getNode(MipsISD::ILVL, DL, Op->getValueType(0),
1345 Op->getOperand(1), Op->getOperand(2));
1346 case Intrinsic::mips_ilvod_b:
1347 case Intrinsic::mips_ilvod_h:
1348 case Intrinsic::mips_ilvod_w:
1349 case Intrinsic::mips_ilvod_d:
1350 return DAG.getNode(MipsISD::ILVOD, DL, Op->getValueType(0),
1351 Op->getOperand(1), Op->getOperand(2));
1352 case Intrinsic::mips_ilvr_b:
1353 case Intrinsic::mips_ilvr_h:
1354 case Intrinsic::mips_ilvr_w:
1355 case Intrinsic::mips_ilvr_d:
1356 return DAG.getNode(MipsISD::ILVR, DL, Op->getValueType(0),
1357 Op->getOperand(1), Op->getOperand(2));
1358 case Intrinsic::mips_insert_b:
1359 case Intrinsic::mips_insert_h:
1360 case Intrinsic::mips_insert_w:
1361 return lowerMSAInsertIntr(Op, DAG, ISD::INSERT_VECTOR_ELT);
1362 case Intrinsic::mips_ldi_b:
1363 case Intrinsic::mips_ldi_h:
1364 case Intrinsic::mips_ldi_w:
1365 case Intrinsic::mips_ldi_d:
1366 return lowerMSASplatImm(Op, 1, DAG);
1367 case Intrinsic::mips_max_s_b:
1368 case Intrinsic::mips_max_s_h:
1369 case Intrinsic::mips_max_s_w:
1370 case Intrinsic::mips_max_s_d:
1371 return DAG.getNode(MipsISD::VSMAX, DL, Op->getValueType(0),
1372 Op->getOperand(1), Op->getOperand(2));
1373 case Intrinsic::mips_max_u_b:
1374 case Intrinsic::mips_max_u_h:
1375 case Intrinsic::mips_max_u_w:
1376 case Intrinsic::mips_max_u_d:
1377 return DAG.getNode(MipsISD::VUMAX, DL, Op->getValueType(0),
1378 Op->getOperand(1), Op->getOperand(2));
1379 case Intrinsic::mips_maxi_s_b:
1380 case Intrinsic::mips_maxi_s_h:
1381 case Intrinsic::mips_maxi_s_w:
1382 case Intrinsic::mips_maxi_s_d:
1383 return DAG.getNode(MipsISD::VSMAX, DL, Op->getValueType(0),
1384 Op->getOperand(1), lowerMSASplatImm(Op, 2, DAG));
1385 case Intrinsic::mips_maxi_u_b:
1386 case Intrinsic::mips_maxi_u_h:
1387 case Intrinsic::mips_maxi_u_w:
1388 case Intrinsic::mips_maxi_u_d:
1389 return DAG.getNode(MipsISD::VUMAX, DL, Op->getValueType(0),
1390 Op->getOperand(1), lowerMSASplatImm(Op, 2, DAG));
1391 case Intrinsic::mips_min_s_b:
1392 case Intrinsic::mips_min_s_h:
1393 case Intrinsic::mips_min_s_w:
1394 case Intrinsic::mips_min_s_d:
1395 return DAG.getNode(MipsISD::VSMIN, DL, Op->getValueType(0),
1396 Op->getOperand(1), Op->getOperand(2));
1397 case Intrinsic::mips_min_u_b:
1398 case Intrinsic::mips_min_u_h:
1399 case Intrinsic::mips_min_u_w:
1400 case Intrinsic::mips_min_u_d:
1401 return DAG.getNode(MipsISD::VUMIN, DL, Op->getValueType(0),
1402 Op->getOperand(1), Op->getOperand(2));
1403 case Intrinsic::mips_mini_s_b:
1404 case Intrinsic::mips_mini_s_h:
1405 case Intrinsic::mips_mini_s_w:
1406 case Intrinsic::mips_mini_s_d:
1407 return DAG.getNode(MipsISD::VSMIN, DL, Op->getValueType(0),
1408 Op->getOperand(1), lowerMSASplatImm(Op, 2, DAG));
1409 case Intrinsic::mips_mini_u_b:
1410 case Intrinsic::mips_mini_u_h:
1411 case Intrinsic::mips_mini_u_w:
1412 case Intrinsic::mips_mini_u_d:
1413 return DAG.getNode(MipsISD::VUMIN, DL, Op->getValueType(0),
1414 Op->getOperand(1), lowerMSASplatImm(Op, 2, DAG));
1415 case Intrinsic::mips_mulv_b:
1416 case Intrinsic::mips_mulv_h:
1417 case Intrinsic::mips_mulv_w:
1418 case Intrinsic::mips_mulv_d:
1419 return DAG.getNode(ISD::MUL, DL, Op->getValueType(0), Op->getOperand(1),
1421 case Intrinsic::mips_nlzc_b:
1422 case Intrinsic::mips_nlzc_h:
1423 case Intrinsic::mips_nlzc_w:
1424 case Intrinsic::mips_nlzc_d:
1425 return DAG.getNode(ISD::CTLZ, DL, Op->getValueType(0), Op->getOperand(1));
1426 case Intrinsic::mips_nor_v: {
1427 SDValue Res = DAG.getNode(ISD::OR, DL, Op->getValueType(0),
1428 Op->getOperand(1), Op->getOperand(2));
1429 return DAG.getNOT(DL, Res, Res->getValueType(0));
1431 case Intrinsic::mips_nori_b: {
1432 SDValue Res = DAG.getNode(ISD::OR, DL, Op->getValueType(0),
1434 lowerMSASplatImm(Op, 2, DAG));
1435 return DAG.getNOT(DL, Res, Res->getValueType(0));
1437 case Intrinsic::mips_or_v:
1438 return DAG.getNode(ISD::OR, DL, Op->getValueType(0), Op->getOperand(1),
1440 case Intrinsic::mips_ori_b:
1441 return DAG.getNode(ISD::OR, DL, Op->getValueType(0),
1442 Op->getOperand(1), lowerMSASplatImm(Op, 2, DAG));
1443 case Intrinsic::mips_pckev_b:
1444 case Intrinsic::mips_pckev_h:
1445 case Intrinsic::mips_pckev_w:
1446 case Intrinsic::mips_pckev_d:
1447 return DAG.getNode(MipsISD::PCKEV, DL, Op->getValueType(0),
1448 Op->getOperand(1), Op->getOperand(2));
1449 case Intrinsic::mips_pckod_b:
1450 case Intrinsic::mips_pckod_h:
1451 case Intrinsic::mips_pckod_w:
1452 case Intrinsic::mips_pckod_d:
1453 return DAG.getNode(MipsISD::PCKOD, DL, Op->getValueType(0),
1454 Op->getOperand(1), Op->getOperand(2));
1455 case Intrinsic::mips_pcnt_b:
1456 case Intrinsic::mips_pcnt_h:
1457 case Intrinsic::mips_pcnt_w:
1458 case Intrinsic::mips_pcnt_d:
1459 return DAG.getNode(ISD::CTPOP, DL, Op->getValueType(0), Op->getOperand(1));
1460 case Intrinsic::mips_shf_b:
1461 case Intrinsic::mips_shf_h:
1462 case Intrinsic::mips_shf_w:
1463 return DAG.getNode(MipsISD::SHF, DL, Op->getValueType(0),
1464 Op->getOperand(2), Op->getOperand(1));
1465 case Intrinsic::mips_sll_b:
1466 case Intrinsic::mips_sll_h:
1467 case Intrinsic::mips_sll_w:
1468 case Intrinsic::mips_sll_d:
1469 return DAG.getNode(ISD::SHL, DL, Op->getValueType(0), Op->getOperand(1),
1471 case Intrinsic::mips_slli_b:
1472 case Intrinsic::mips_slli_h:
1473 case Intrinsic::mips_slli_w:
1474 case Intrinsic::mips_slli_d:
1475 return DAG.getNode(ISD::SHL, DL, Op->getValueType(0),
1476 Op->getOperand(1), lowerMSASplatImm(Op, 2, DAG));
1477 case Intrinsic::mips_splati_b:
1478 case Intrinsic::mips_splati_h:
1479 case Intrinsic::mips_splati_w:
1480 case Intrinsic::mips_splati_d:
1481 return DAG.getNode(MipsISD::VSHF, DL, Op->getValueType(0),
1482 lowerMSASplatImm(Op, 2, DAG), Op->getOperand(1),
1484 case Intrinsic::mips_sra_b:
1485 case Intrinsic::mips_sra_h:
1486 case Intrinsic::mips_sra_w:
1487 case Intrinsic::mips_sra_d:
1488 return DAG.getNode(ISD::SRA, DL, Op->getValueType(0), Op->getOperand(1),
1490 case Intrinsic::mips_srai_b:
1491 case Intrinsic::mips_srai_h:
1492 case Intrinsic::mips_srai_w:
1493 case Intrinsic::mips_srai_d:
1494 return DAG.getNode(ISD::SRA, DL, Op->getValueType(0),
1495 Op->getOperand(1), lowerMSASplatImm(Op, 2, DAG));
1496 case Intrinsic::mips_srl_b:
1497 case Intrinsic::mips_srl_h:
1498 case Intrinsic::mips_srl_w:
1499 case Intrinsic::mips_srl_d:
1500 return DAG.getNode(ISD::SRL, DL, Op->getValueType(0), Op->getOperand(1),
1502 case Intrinsic::mips_srli_b:
1503 case Intrinsic::mips_srli_h:
1504 case Intrinsic::mips_srli_w:
1505 case Intrinsic::mips_srli_d:
1506 return DAG.getNode(ISD::SRL, DL, Op->getValueType(0),
1507 Op->getOperand(1), lowerMSASplatImm(Op, 2, DAG));
1508 case Intrinsic::mips_subv_b:
1509 case Intrinsic::mips_subv_h:
1510 case Intrinsic::mips_subv_w:
1511 case Intrinsic::mips_subv_d:
1512 return DAG.getNode(ISD::SUB, DL, Op->getValueType(0), Op->getOperand(1),
1514 case Intrinsic::mips_subvi_b:
1515 case Intrinsic::mips_subvi_h:
1516 case Intrinsic::mips_subvi_w:
1517 case Intrinsic::mips_subvi_d:
1518 return DAG.getNode(ISD::SUB, DL, Op->getValueType(0),
1519 Op->getOperand(1), lowerMSASplatImm(Op, 2, DAG));
1520 case Intrinsic::mips_vshf_b:
1521 case Intrinsic::mips_vshf_h:
1522 case Intrinsic::mips_vshf_w:
1523 case Intrinsic::mips_vshf_d:
1524 return DAG.getNode(MipsISD::VSHF, DL, Op->getValueType(0),
1525 Op->getOperand(1), Op->getOperand(2), Op->getOperand(3));
1526 case Intrinsic::mips_xor_v:
1527 return DAG.getNode(ISD::XOR, DL, Op->getValueType(0), Op->getOperand(1),
1529 case Intrinsic::mips_xori_b:
1530 return DAG.getNode(ISD::XOR, DL, Op->getValueType(0),
1531 Op->getOperand(1), lowerMSASplatImm(Op, 2, DAG));
1535 static SDValue lowerMSALoadIntr(SDValue Op, SelectionDAG &DAG, unsigned Intr) {
1537 SDValue ChainIn = Op->getOperand(0);
1538 SDValue Address = Op->getOperand(2);
1539 SDValue Offset = Op->getOperand(3);
1540 EVT ResTy = Op->getValueType(0);
1541 EVT PtrTy = Address->getValueType(0);
1543 Address = DAG.getNode(ISD::ADD, DL, PtrTy, Address, Offset);
1545 return DAG.getLoad(ResTy, DL, ChainIn, Address, MachinePointerInfo(), false,
1549 SDValue MipsSETargetLowering::lowerINTRINSIC_W_CHAIN(SDValue Op,
1550 SelectionDAG &DAG) const {
1551 unsigned Intr = cast<ConstantSDNode>(Op->getOperand(1))->getZExtValue();
1555 case Intrinsic::mips_extp:
1556 return lowerDSPIntr(Op, DAG, MipsISD::EXTP);
1557 case Intrinsic::mips_extpdp:
1558 return lowerDSPIntr(Op, DAG, MipsISD::EXTPDP);
1559 case Intrinsic::mips_extr_w:
1560 return lowerDSPIntr(Op, DAG, MipsISD::EXTR_W);
1561 case Intrinsic::mips_extr_r_w:
1562 return lowerDSPIntr(Op, DAG, MipsISD::EXTR_R_W);
1563 case Intrinsic::mips_extr_rs_w:
1564 return lowerDSPIntr(Op, DAG, MipsISD::EXTR_RS_W);
1565 case Intrinsic::mips_extr_s_h:
1566 return lowerDSPIntr(Op, DAG, MipsISD::EXTR_S_H);
1567 case Intrinsic::mips_mthlip:
1568 return lowerDSPIntr(Op, DAG, MipsISD::MTHLIP);
1569 case Intrinsic::mips_mulsaq_s_w_ph:
1570 return lowerDSPIntr(Op, DAG, MipsISD::MULSAQ_S_W_PH);
1571 case Intrinsic::mips_maq_s_w_phl:
1572 return lowerDSPIntr(Op, DAG, MipsISD::MAQ_S_W_PHL);
1573 case Intrinsic::mips_maq_s_w_phr:
1574 return lowerDSPIntr(Op, DAG, MipsISD::MAQ_S_W_PHR);
1575 case Intrinsic::mips_maq_sa_w_phl:
1576 return lowerDSPIntr(Op, DAG, MipsISD::MAQ_SA_W_PHL);
1577 case Intrinsic::mips_maq_sa_w_phr:
1578 return lowerDSPIntr(Op, DAG, MipsISD::MAQ_SA_W_PHR);
1579 case Intrinsic::mips_dpaq_s_w_ph:
1580 return lowerDSPIntr(Op, DAG, MipsISD::DPAQ_S_W_PH);
1581 case Intrinsic::mips_dpsq_s_w_ph:
1582 return lowerDSPIntr(Op, DAG, MipsISD::DPSQ_S_W_PH);
1583 case Intrinsic::mips_dpaq_sa_l_w:
1584 return lowerDSPIntr(Op, DAG, MipsISD::DPAQ_SA_L_W);
1585 case Intrinsic::mips_dpsq_sa_l_w:
1586 return lowerDSPIntr(Op, DAG, MipsISD::DPSQ_SA_L_W);
1587 case Intrinsic::mips_dpaqx_s_w_ph:
1588 return lowerDSPIntr(Op, DAG, MipsISD::DPAQX_S_W_PH);
1589 case Intrinsic::mips_dpaqx_sa_w_ph:
1590 return lowerDSPIntr(Op, DAG, MipsISD::DPAQX_SA_W_PH);
1591 case Intrinsic::mips_dpsqx_s_w_ph:
1592 return lowerDSPIntr(Op, DAG, MipsISD::DPSQX_S_W_PH);
1593 case Intrinsic::mips_dpsqx_sa_w_ph:
1594 return lowerDSPIntr(Op, DAG, MipsISD::DPSQX_SA_W_PH);
1595 case Intrinsic::mips_ld_b:
1596 case Intrinsic::mips_ld_h:
1597 case Intrinsic::mips_ld_w:
1598 case Intrinsic::mips_ld_d:
1599 case Intrinsic::mips_ldx_b:
1600 case Intrinsic::mips_ldx_h:
1601 case Intrinsic::mips_ldx_w:
1602 case Intrinsic::mips_ldx_d:
1603 return lowerMSALoadIntr(Op, DAG, Intr);
1607 static SDValue lowerMSAStoreIntr(SDValue Op, SelectionDAG &DAG, unsigned Intr) {
1609 SDValue ChainIn = Op->getOperand(0);
1610 SDValue Value = Op->getOperand(2);
1611 SDValue Address = Op->getOperand(3);
1612 SDValue Offset = Op->getOperand(4);
1613 EVT PtrTy = Address->getValueType(0);
1615 Address = DAG.getNode(ISD::ADD, DL, PtrTy, Address, Offset);
1617 return DAG.getStore(ChainIn, DL, Value, Address, MachinePointerInfo(), false,
1621 SDValue MipsSETargetLowering::lowerINTRINSIC_VOID(SDValue Op,
1622 SelectionDAG &DAG) const {
1623 unsigned Intr = cast<ConstantSDNode>(Op->getOperand(1))->getZExtValue();
1627 case Intrinsic::mips_st_b:
1628 case Intrinsic::mips_st_h:
1629 case Intrinsic::mips_st_w:
1630 case Intrinsic::mips_st_d:
1631 case Intrinsic::mips_stx_b:
1632 case Intrinsic::mips_stx_h:
1633 case Intrinsic::mips_stx_w:
1634 case Intrinsic::mips_stx_d:
1635 return lowerMSAStoreIntr(Op, DAG, Intr);
1639 /// \brief Check if the given BuildVectorSDNode is a splat.
1640 /// This method currently relies on DAG nodes being reused when equivalent,
1641 /// so it's possible for this to return false even when isConstantSplat returns
1643 static bool isSplatVector(const BuildVectorSDNode *N) {
1644 unsigned int nOps = N->getNumOperands();
1645 assert(nOps > 1 && "isSplat has 0 or 1 sized build vector");
1647 SDValue Operand0 = N->getOperand(0);
1649 for (unsigned int i = 1; i < nOps; ++i) {
1650 if (N->getOperand(i) != Operand0)
1657 // Lower ISD::EXTRACT_VECTOR_ELT into MipsISD::VEXTRACT_SEXT_ELT.
1659 // The non-value bits resulting from ISD::EXTRACT_VECTOR_ELT are undefined. We
1660 // choose to sign-extend but we could have equally chosen zero-extend. The
1661 // DAGCombiner will fold any sign/zero extension of the ISD::EXTRACT_VECTOR_ELT
1662 // result into this node later (possibly changing it to a zero-extend in the
1664 SDValue MipsSETargetLowering::
1665 lowerEXTRACT_VECTOR_ELT(SDValue Op, SelectionDAG &DAG) const {
1667 EVT ResTy = Op->getValueType(0);
1668 SDValue Op0 = Op->getOperand(0);
1669 EVT VecTy = Op0->getValueType(0);
1671 if (!VecTy.is128BitVector())
1674 if (ResTy.isInteger()) {
1675 SDValue Op1 = Op->getOperand(1);
1676 EVT EltTy = VecTy.getVectorElementType();
1677 return DAG.getNode(MipsISD::VEXTRACT_SEXT_ELT, DL, ResTy, Op0, Op1,
1678 DAG.getValueType(EltTy));
1684 static bool isConstantOrUndef(const SDValue Op) {
1685 if (Op->getOpcode() == ISD::UNDEF)
1687 if (dyn_cast<ConstantSDNode>(Op))
1689 if (dyn_cast<ConstantFPSDNode>(Op))
1694 static bool isConstantOrUndefBUILD_VECTOR(const BuildVectorSDNode *Op) {
1695 for (unsigned i = 0; i < Op->getNumOperands(); ++i)
1696 if (isConstantOrUndef(Op->getOperand(i)))
1701 // Lowers ISD::BUILD_VECTOR into appropriate SelectionDAG nodes for the
1704 // Lowers according to the following rules:
1705 // - Constant splats are legal as-is as long as the SplatBitSize is a power of
1706 // 2 less than or equal to 64 and the value fits into a signed 10-bit
1708 // - Constant splats are lowered to bitconverted BUILD_VECTORs if SplatBitSize
1709 // is a power of 2 less than or equal to 64 and the value does not fit into a
1710 // signed 10-bit immediate
1711 // - Non-constant splats are legal as-is.
1712 // - Non-constant non-splats are lowered to sequences of INSERT_VECTOR_ELT.
1713 // - All others are illegal and must be expanded.
1714 SDValue MipsSETargetLowering::lowerBUILD_VECTOR(SDValue Op,
1715 SelectionDAG &DAG) const {
1716 BuildVectorSDNode *Node = cast<BuildVectorSDNode>(Op);
1717 EVT ResTy = Op->getValueType(0);
1719 APInt SplatValue, SplatUndef;
1720 unsigned SplatBitSize;
1723 if (!Subtarget->hasMSA() || !ResTy.is128BitVector())
1726 if (Node->isConstantSplat(SplatValue, SplatUndef, SplatBitSize,
1728 !Subtarget->isLittle()) && SplatBitSize <= 64) {
1729 // We can only cope with 8, 16, 32, or 64-bit elements
1730 if (SplatBitSize != 8 && SplatBitSize != 16 && SplatBitSize != 32 &&
1734 // If the value fits into a simm10 then we can use ldi.[bhwd]
1735 if (SplatValue.isSignedIntN(10))
1740 switch (SplatBitSize) {
1744 ViaVecTy = MVT::v16i8;
1747 ViaVecTy = MVT::v8i16;
1750 ViaVecTy = MVT::v4i32;
1753 // There's no fill.d to fall back on for 64-bit values
1757 SmallVector<SDValue, 16> Ops;
1758 SDValue Constant = DAG.getConstant(SplatValue.sextOrSelf(32), MVT::i32);
1760 for (unsigned i = 0; i < ViaVecTy.getVectorNumElements(); ++i)
1761 Ops.push_back(Constant);
1763 SDValue Result = DAG.getNode(ISD::BUILD_VECTOR, SDLoc(Node), ViaVecTy,
1764 &Ops[0], Ops.size());
1766 if (ViaVecTy != ResTy)
1767 Result = DAG.getNode(ISD::BITCAST, SDLoc(Node), ResTy, Result);
1770 } else if (isSplatVector(Node))
1772 else if (!isConstantOrUndefBUILD_VECTOR(Node)) {
1773 // Use INSERT_VECTOR_ELT operations rather than expand to stores.
1774 // The resulting code is the same length as the expansion, but it doesn't
1775 // use memory operations
1776 EVT ResTy = Node->getValueType(0);
1778 assert(ResTy.isVector());
1780 unsigned NumElts = ResTy.getVectorNumElements();
1781 SDValue Vector = DAG.getUNDEF(ResTy);
1782 for (unsigned i = 0; i < NumElts; ++i) {
1783 Vector = DAG.getNode(ISD::INSERT_VECTOR_ELT, DL, ResTy, Vector,
1784 Node->getOperand(i),
1785 DAG.getConstant(i, MVT::i32));
1793 // Lower VECTOR_SHUFFLE into SHF (if possible).
1795 // SHF splits the vector into blocks of four elements, then shuffles these
1796 // elements according to a <4 x i2> constant (encoded as an integer immediate).
1798 // It is therefore possible to lower into SHF when the mask takes the form:
1799 // <a, b, c, d, a+4, b+4, c+4, d+4, a+8, b+8, c+8, d+8, ...>
1800 // When undef's appear they are treated as if they were whatever value is
1801 // necessary in order to fit the above form.
1804 // %2 = shufflevector <8 x i16> %0, <8 x i16> undef,
1805 // <8 x i32> <i32 3, i32 2, i32 1, i32 0,
1806 // i32 7, i32 6, i32 5, i32 4>
1808 // (SHF_H $w0, $w1, 27)
1809 // where the 27 comes from:
1810 // 3 + (2 << 2) + (1 << 4) + (0 << 6)
1811 static SDValue lowerVECTOR_SHUFFLE_SHF(SDValue Op, EVT ResTy,
1812 SmallVector<int, 16> Indices,
1813 SelectionDAG &DAG) {
1814 int SHFIndices[4] = { -1, -1, -1, -1 };
1816 if (Indices.size() < 4)
1819 for (unsigned i = 0; i < 4; ++i) {
1820 for (unsigned j = i; j < Indices.size(); j += 4) {
1821 int Idx = Indices[j];
1823 // Convert from vector index to 4-element subvector index
1824 // If an index refers to an element outside of the subvector then give up
1827 if (Idx < 0 || Idx >= 4)
1831 // If the mask has an undef, replace it with the current index.
1832 // Note that it might still be undef if the current index is also undef
1833 if (SHFIndices[i] == -1)
1834 SHFIndices[i] = Idx;
1836 // Check that non-undef values are the same as in the mask. If they
1837 // aren't then give up
1838 if (!(Idx == -1 || Idx == SHFIndices[i]))
1843 // Calculate the immediate. Replace any remaining undefs with zero
1845 for (int i = 3; i >= 0; --i) {
1846 int Idx = SHFIndices[i];
1855 return DAG.getNode(MipsISD::SHF, SDLoc(Op), ResTy,
1856 DAG.getConstant(Imm, MVT::i32), Op->getOperand(0));
1859 // Lower VECTOR_SHUFFLE into ILVEV (if possible).
1861 // ILVEV interleaves the even elements from each vector.
1863 // It is possible to lower into ILVEV when the mask takes the form:
1864 // <0, n, 2, n+2, 4, n+4, ...>
1865 // where n is the number of elements in the vector.
1867 // When undef's appear in the mask they are treated as if they were whatever
1868 // value is necessary in order to fit the above form.
1869 static SDValue lowerVECTOR_SHUFFLE_ILVEV(SDValue Op, EVT ResTy,
1870 SmallVector<int, 16> Indices,
1871 SelectionDAG &DAG) {
1872 assert ((Indices.size() % 2) == 0);
1874 int WtIdx = ResTy.getVectorNumElements();
1876 for (unsigned i = 0; i < Indices.size(); i += 2) {
1877 if (Indices[i] != -1 && Indices[i] != WsIdx)
1879 if (Indices[i+1] != -1 && Indices[i+1] != WtIdx)
1885 return DAG.getNode(MipsISD::ILVEV, SDLoc(Op), ResTy, Op->getOperand(0),
1889 // Lower VECTOR_SHUFFLE into ILVOD (if possible).
1891 // ILVOD interleaves the odd elements from each vector.
1893 // It is possible to lower into ILVOD when the mask takes the form:
1894 // <1, n+1, 3, n+3, 5, n+5, ...>
1895 // where n is the number of elements in the vector.
1897 // When undef's appear in the mask they are treated as if they were whatever
1898 // value is necessary in order to fit the above form.
1899 static SDValue lowerVECTOR_SHUFFLE_ILVOD(SDValue Op, EVT ResTy,
1900 SmallVector<int, 16> Indices,
1901 SelectionDAG &DAG) {
1902 assert ((Indices.size() % 2) == 0);
1904 int WtIdx = ResTy.getVectorNumElements() + 1;
1906 for (unsigned i = 0; i < Indices.size(); i += 2) {
1907 if (Indices[i] != -1 && Indices[i] != WsIdx)
1909 if (Indices[i+1] != -1 && Indices[i+1] != WtIdx)
1915 return DAG.getNode(MipsISD::ILVOD, SDLoc(Op), ResTy, Op->getOperand(0),
1919 // Lower VECTOR_SHUFFLE into ILVL (if possible).
1921 // ILVL interleaves consecutive elements from the left half of each vector.
1923 // It is possible to lower into ILVL when the mask takes the form:
1924 // <0, n, 1, n+1, 2, n+2, ...>
1925 // where n is the number of elements in the vector.
1927 // When undef's appear in the mask they are treated as if they were whatever
1928 // value is necessary in order to fit the above form.
1929 static SDValue lowerVECTOR_SHUFFLE_ILVL(SDValue Op, EVT ResTy,
1930 SmallVector<int, 16> Indices,
1931 SelectionDAG &DAG) {
1932 assert ((Indices.size() % 2) == 0);
1934 int WtIdx = ResTy.getVectorNumElements();
1936 for (unsigned i = 0; i < Indices.size(); i += 2) {
1937 if (Indices[i] != -1 && Indices[i] != WsIdx)
1939 if (Indices[i+1] != -1 && Indices[i+1] != WtIdx)
1945 return DAG.getNode(MipsISD::ILVL, SDLoc(Op), ResTy, Op->getOperand(0),
1949 // Lower VECTOR_SHUFFLE into ILVR (if possible).
1951 // ILVR interleaves consecutive elements from the right half of each vector.
1953 // It is possible to lower into ILVR when the mask takes the form:
1954 // <x, n+x, x+1, n+x+1, x+2, n+x+2, ...>
1955 // where n is the number of elements in the vector and x is half n.
1957 // When undef's appear in the mask they are treated as if they were whatever
1958 // value is necessary in order to fit the above form.
1959 static SDValue lowerVECTOR_SHUFFLE_ILVR(SDValue Op, EVT ResTy,
1960 SmallVector<int, 16> Indices,
1961 SelectionDAG &DAG) {
1962 assert ((Indices.size() % 2) == 0);
1963 unsigned NumElts = ResTy.getVectorNumElements();
1964 int WsIdx = NumElts / 2;
1965 int WtIdx = NumElts + NumElts / 2;
1967 for (unsigned i = 0; i < Indices.size(); i += 2) {
1968 if (Indices[i] != -1 && Indices[i] != WsIdx)
1970 if (Indices[i+1] != -1 && Indices[i+1] != WtIdx)
1976 return DAG.getNode(MipsISD::ILVR, SDLoc(Op), ResTy, Op->getOperand(0),
1980 // Lower VECTOR_SHUFFLE into PCKEV (if possible).
1982 // PCKEV copies the even elements of each vector into the result vector.
1984 // It is possible to lower into PCKEV when the mask takes the form:
1985 // <0, 2, 4, ..., n, n+2, n+4, ...>
1986 // where n is the number of elements in the vector.
1988 // When undef's appear in the mask they are treated as if they were whatever
1989 // value is necessary in order to fit the above form.
1990 static SDValue lowerVECTOR_SHUFFLE_PCKEV(SDValue Op, EVT ResTy,
1991 SmallVector<int, 16> Indices,
1992 SelectionDAG &DAG) {
1993 assert ((Indices.size() % 2) == 0);
1996 for (unsigned i = 0; i < Indices.size(); ++i) {
1997 if (Indices[i] != -1 && Indices[i] != Idx)
2002 return DAG.getNode(MipsISD::PCKEV, SDLoc(Op), ResTy, Op->getOperand(0),
2006 // Lower VECTOR_SHUFFLE into PCKOD (if possible).
2008 // PCKOD copies the odd elements of each vector into the result vector.
2010 // It is possible to lower into PCKOD when the mask takes the form:
2011 // <1, 3, 5, ..., n+1, n+3, n+5, ...>
2012 // where n is the number of elements in the vector.
2014 // When undef's appear in the mask they are treated as if they were whatever
2015 // value is necessary in order to fit the above form.
2016 static SDValue lowerVECTOR_SHUFFLE_PCKOD(SDValue Op, EVT ResTy,
2017 SmallVector<int, 16> Indices,
2018 SelectionDAG &DAG) {
2019 assert ((Indices.size() % 2) == 0);
2022 for (unsigned i = 0; i < Indices.size(); ++i) {
2023 if (Indices[i] != -1 && Indices[i] != Idx)
2028 return DAG.getNode(MipsISD::PCKOD, SDLoc(Op), ResTy, Op->getOperand(0),
2032 // Lower VECTOR_SHUFFLE into VSHF.
2034 // This mostly consists of converting the shuffle indices in Indices into a
2035 // BUILD_VECTOR and adding it as an operand to the resulting VSHF. There is
2036 // also code to eliminate unused operands of the VECTOR_SHUFFLE. For example,
2037 // if the type is v8i16 and all the indices are less than 8 then the second
2038 // operand is unused and can be replaced with anything. We choose to replace it
2039 // with the used operand since this reduces the number of instructions overall.
2040 static SDValue lowerVECTOR_SHUFFLE_VSHF(SDValue Op, EVT ResTy,
2041 SmallVector<int, 16> Indices,
2042 SelectionDAG &DAG) {
2043 SmallVector<SDValue, 16> Ops;
2046 EVT MaskVecTy = ResTy.changeVectorElementTypeToInteger();
2047 EVT MaskEltTy = MaskVecTy.getVectorElementType();
2048 bool Using1stVec = false;
2049 bool Using2ndVec = false;
2051 int ResTyNumElts = ResTy.getVectorNumElements();
2053 for (int i = 0; i < ResTyNumElts; ++i) {
2054 // Idx == -1 means UNDEF
2055 int Idx = Indices[i];
2057 if (0 <= Idx && Idx < ResTyNumElts)
2059 if (ResTyNumElts <= Idx && Idx < ResTyNumElts * 2)
2063 for (SmallVector<int, 16>::iterator I = Indices.begin(); I != Indices.end();
2065 Ops.push_back(DAG.getTargetConstant(*I, MaskEltTy));
2067 SDValue MaskVec = DAG.getNode(ISD::BUILD_VECTOR, DL, MaskVecTy, &Ops[0],
2070 if (Using1stVec && Using2ndVec) {
2071 Op0 = Op->getOperand(0);
2072 Op1 = Op->getOperand(1);
2073 } else if (Using1stVec)
2074 Op0 = Op1 = Op->getOperand(0);
2075 else if (Using2ndVec)
2076 Op0 = Op1 = Op->getOperand(1);
2078 llvm_unreachable("shuffle vector mask references neither vector operand?");
2080 return DAG.getNode(MipsISD::VSHF, DL, ResTy, MaskVec, Op0, Op1);
2083 // Lower VECTOR_SHUFFLE into one of a number of instructions depending on the
2084 // indices in the shuffle.
2085 SDValue MipsSETargetLowering::lowerVECTOR_SHUFFLE(SDValue Op,
2086 SelectionDAG &DAG) const {
2087 ShuffleVectorSDNode *Node = cast<ShuffleVectorSDNode>(Op);
2088 EVT ResTy = Op->getValueType(0);
2090 if (!ResTy.is128BitVector())
2093 int ResTyNumElts = ResTy.getVectorNumElements();
2094 SmallVector<int, 16> Indices;
2096 for (int i = 0; i < ResTyNumElts; ++i)
2097 Indices.push_back(Node->getMaskElt(i));
2099 SDValue Result = lowerVECTOR_SHUFFLE_SHF(Op, ResTy, Indices, DAG);
2100 if (Result.getNode())
2102 Result = lowerVECTOR_SHUFFLE_ILVEV(Op, ResTy, Indices, DAG);
2103 if (Result.getNode())
2105 Result = lowerVECTOR_SHUFFLE_ILVOD(Op, ResTy, Indices, DAG);
2106 if (Result.getNode())
2108 Result = lowerVECTOR_SHUFFLE_ILVL(Op, ResTy, Indices, DAG);
2109 if (Result.getNode())
2111 Result = lowerVECTOR_SHUFFLE_ILVR(Op, ResTy, Indices, DAG);
2112 if (Result.getNode())
2114 Result = lowerVECTOR_SHUFFLE_PCKEV(Op, ResTy, Indices, DAG);
2115 if (Result.getNode())
2117 Result = lowerVECTOR_SHUFFLE_PCKOD(Op, ResTy, Indices, DAG);
2118 if (Result.getNode())
2120 return lowerVECTOR_SHUFFLE_VSHF(Op, ResTy, Indices, DAG);
2123 MachineBasicBlock * MipsSETargetLowering::
2124 emitBPOSGE32(MachineInstr *MI, MachineBasicBlock *BB) const{
2126 // bposge32_pseudo $vr0
2136 // $vr0 = phi($vr2, $fbb, $vr1, $tbb)
2138 MachineRegisterInfo &RegInfo = BB->getParent()->getRegInfo();
2139 const TargetInstrInfo *TII = getTargetMachine().getInstrInfo();
2140 const TargetRegisterClass *RC = &Mips::GPR32RegClass;
2141 DebugLoc DL = MI->getDebugLoc();
2142 const BasicBlock *LLVM_BB = BB->getBasicBlock();
2143 MachineFunction::iterator It = llvm::next(MachineFunction::iterator(BB));
2144 MachineFunction *F = BB->getParent();
2145 MachineBasicBlock *FBB = F->CreateMachineBasicBlock(LLVM_BB);
2146 MachineBasicBlock *TBB = F->CreateMachineBasicBlock(LLVM_BB);
2147 MachineBasicBlock *Sink = F->CreateMachineBasicBlock(LLVM_BB);
2150 F->insert(It, Sink);
2152 // Transfer the remainder of BB and its successor edges to Sink.
2153 Sink->splice(Sink->begin(), BB, llvm::next(MachineBasicBlock::iterator(MI)),
2155 Sink->transferSuccessorsAndUpdatePHIs(BB);
2158 BB->addSuccessor(FBB);
2159 BB->addSuccessor(TBB);
2160 FBB->addSuccessor(Sink);
2161 TBB->addSuccessor(Sink);
2163 // Insert the real bposge32 instruction to $BB.
2164 BuildMI(BB, DL, TII->get(Mips::BPOSGE32)).addMBB(TBB);
2167 unsigned VR2 = RegInfo.createVirtualRegister(RC);
2168 BuildMI(*FBB, FBB->end(), DL, TII->get(Mips::ADDiu), VR2)
2169 .addReg(Mips::ZERO).addImm(0);
2170 BuildMI(*FBB, FBB->end(), DL, TII->get(Mips::B)).addMBB(Sink);
2173 unsigned VR1 = RegInfo.createVirtualRegister(RC);
2174 BuildMI(*TBB, TBB->end(), DL, TII->get(Mips::ADDiu), VR1)
2175 .addReg(Mips::ZERO).addImm(1);
2177 // Insert phi function to $Sink.
2178 BuildMI(*Sink, Sink->begin(), DL, TII->get(Mips::PHI),
2179 MI->getOperand(0).getReg())
2180 .addReg(VR2).addMBB(FBB).addReg(VR1).addMBB(TBB);
2182 MI->eraseFromParent(); // The pseudo instruction is gone now.
2186 MachineBasicBlock * MipsSETargetLowering::
2187 emitMSACBranchPseudo(MachineInstr *MI, MachineBasicBlock *BB,
2188 unsigned BranchOp) const{
2190 // vany_nonzero $rd, $ws
2201 // $rd = phi($rd1, $fbb, $rd2, $tbb)
2203 MachineRegisterInfo &RegInfo = BB->getParent()->getRegInfo();
2204 const TargetInstrInfo *TII = getTargetMachine().getInstrInfo();
2205 const TargetRegisterClass *RC = &Mips::GPR32RegClass;
2206 DebugLoc DL = MI->getDebugLoc();
2207 const BasicBlock *LLVM_BB = BB->getBasicBlock();
2208 MachineFunction::iterator It = llvm::next(MachineFunction::iterator(BB));
2209 MachineFunction *F = BB->getParent();
2210 MachineBasicBlock *FBB = F->CreateMachineBasicBlock(LLVM_BB);
2211 MachineBasicBlock *TBB = F->CreateMachineBasicBlock(LLVM_BB);
2212 MachineBasicBlock *Sink = F->CreateMachineBasicBlock(LLVM_BB);
2215 F->insert(It, Sink);
2217 // Transfer the remainder of BB and its successor edges to Sink.
2218 Sink->splice(Sink->begin(), BB, llvm::next(MachineBasicBlock::iterator(MI)),
2220 Sink->transferSuccessorsAndUpdatePHIs(BB);
2223 BB->addSuccessor(FBB);
2224 BB->addSuccessor(TBB);
2225 FBB->addSuccessor(Sink);
2226 TBB->addSuccessor(Sink);
2228 // Insert the real bnz.b instruction to $BB.
2229 BuildMI(BB, DL, TII->get(BranchOp))
2230 .addReg(MI->getOperand(1).getReg())
2234 unsigned RD1 = RegInfo.createVirtualRegister(RC);
2235 BuildMI(*FBB, FBB->end(), DL, TII->get(Mips::ADDiu), RD1)
2236 .addReg(Mips::ZERO).addImm(0);
2237 BuildMI(*FBB, FBB->end(), DL, TII->get(Mips::B)).addMBB(Sink);
2240 unsigned RD2 = RegInfo.createVirtualRegister(RC);
2241 BuildMI(*TBB, TBB->end(), DL, TII->get(Mips::ADDiu), RD2)
2242 .addReg(Mips::ZERO).addImm(1);
2244 // Insert phi function to $Sink.
2245 BuildMI(*Sink, Sink->begin(), DL, TII->get(Mips::PHI),
2246 MI->getOperand(0).getReg())
2247 .addReg(RD1).addMBB(FBB).addReg(RD2).addMBB(TBB);
2249 MI->eraseFromParent(); // The pseudo instruction is gone now.
2253 // Emit the COPY_FW pseudo instruction.
2255 // copy_fw_pseudo $fd, $ws, n
2257 // copy_u_w $rt, $ws, $n
2260 // When n is zero, the equivalent operation can be performed with (potentially)
2261 // zero instructions due to register overlaps. This optimization is never valid
2262 // for lane 1 because it would require FR=0 mode which isn't supported by MSA.
2263 MachineBasicBlock * MipsSETargetLowering::
2264 emitCOPY_FW(MachineInstr *MI, MachineBasicBlock *BB) const{
2265 const TargetInstrInfo *TII = getTargetMachine().getInstrInfo();
2266 MachineRegisterInfo &RegInfo = BB->getParent()->getRegInfo();
2267 DebugLoc DL = MI->getDebugLoc();
2268 unsigned Fd = MI->getOperand(0).getReg();
2269 unsigned Ws = MI->getOperand(1).getReg();
2270 unsigned Lane = MI->getOperand(2).getImm();
2273 BuildMI(*BB, MI, DL, TII->get(Mips::COPY), Fd).addReg(Ws, 0, Mips::sub_lo);
2275 unsigned Wt = RegInfo.createVirtualRegister(&Mips::MSA128WRegClass);
2277 BuildMI(*BB, MI, DL, TII->get(Mips::SPLATI_W), Wt).addReg(Ws).addImm(1);
2278 BuildMI(*BB, MI, DL, TII->get(Mips::COPY), Fd).addReg(Wt, 0, Mips::sub_lo);
2281 MI->eraseFromParent(); // The pseudo instruction is gone now.
2285 // Emit the COPY_FD pseudo instruction.
2287 // copy_fd_pseudo $fd, $ws, n
2289 // splati.d $wt, $ws, $n
2290 // copy $fd, $wt:sub_64
2292 // When n is zero, the equivalent operation can be performed with (potentially)
2293 // zero instructions due to register overlaps. This optimization is always
2294 // valid because FR=1 mode which is the only supported mode in MSA.
2295 MachineBasicBlock * MipsSETargetLowering::
2296 emitCOPY_FD(MachineInstr *MI, MachineBasicBlock *BB) const{
2297 assert(Subtarget->isFP64bit());
2299 const TargetInstrInfo *TII = getTargetMachine().getInstrInfo();
2300 MachineRegisterInfo &RegInfo = BB->getParent()->getRegInfo();
2301 unsigned Fd = MI->getOperand(0).getReg();
2302 unsigned Ws = MI->getOperand(1).getReg();
2303 unsigned Lane = MI->getOperand(2).getImm() * 2;
2304 DebugLoc DL = MI->getDebugLoc();
2307 BuildMI(*BB, MI, DL, TII->get(Mips::COPY), Fd).addReg(Ws, 0, Mips::sub_64);
2309 unsigned Wt = RegInfo.createVirtualRegister(&Mips::MSA128DRegClass);
2311 BuildMI(*BB, MI, DL, TII->get(Mips::SPLATI_D), Wt).addReg(Ws).addImm(1);
2312 BuildMI(*BB, MI, DL, TII->get(Mips::COPY), Fd).addReg(Wt, 0, Mips::sub_64);
2315 MI->eraseFromParent(); // The pseudo instruction is gone now.