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
36 addRegisterClass(MVT::i32, &Mips::GPR32RegClass);
39 addRegisterClass(MVT::i64, &Mips::GPR64RegClass);
41 if (Subtarget->hasDSP() || Subtarget->hasMSA()) {
42 // Expand all truncating stores and extending loads.
43 unsigned FirstVT = (unsigned)MVT::FIRST_VECTOR_VALUETYPE;
44 unsigned LastVT = (unsigned)MVT::LAST_VECTOR_VALUETYPE;
46 for (unsigned VT0 = FirstVT; VT0 <= LastVT; ++VT0) {
47 for (unsigned VT1 = FirstVT; VT1 <= LastVT; ++VT1)
48 setTruncStoreAction((MVT::SimpleValueType)VT0,
49 (MVT::SimpleValueType)VT1, Expand);
51 setLoadExtAction(ISD::SEXTLOAD, (MVT::SimpleValueType)VT0, Expand);
52 setLoadExtAction(ISD::ZEXTLOAD, (MVT::SimpleValueType)VT0, Expand);
53 setLoadExtAction(ISD::EXTLOAD, (MVT::SimpleValueType)VT0, Expand);
57 if (Subtarget->hasDSP()) {
58 MVT::SimpleValueType VecTys[2] = {MVT::v2i16, MVT::v4i8};
60 for (unsigned i = 0; i < array_lengthof(VecTys); ++i) {
61 addRegisterClass(VecTys[i], &Mips::DSPRRegClass);
63 // Expand all builtin opcodes.
64 for (unsigned Opc = 0; Opc < ISD::BUILTIN_OP_END; ++Opc)
65 setOperationAction(Opc, VecTys[i], Expand);
67 setOperationAction(ISD::ADD, VecTys[i], Legal);
68 setOperationAction(ISD::SUB, VecTys[i], Legal);
69 setOperationAction(ISD::LOAD, VecTys[i], Legal);
70 setOperationAction(ISD::STORE, VecTys[i], Legal);
71 setOperationAction(ISD::BITCAST, VecTys[i], Legal);
74 setTargetDAGCombine(ISD::SHL);
75 setTargetDAGCombine(ISD::SRA);
76 setTargetDAGCombine(ISD::SRL);
77 setTargetDAGCombine(ISD::SETCC);
78 setTargetDAGCombine(ISD::VSELECT);
81 if (Subtarget->hasDSPR2())
82 setOperationAction(ISD::MUL, MVT::v2i16, Legal);
84 if (Subtarget->hasMSA()) {
85 addMSAIntType(MVT::v16i8, &Mips::MSA128BRegClass);
86 addMSAIntType(MVT::v8i16, &Mips::MSA128HRegClass);
87 addMSAIntType(MVT::v4i32, &Mips::MSA128WRegClass);
88 addMSAIntType(MVT::v2i64, &Mips::MSA128DRegClass);
89 addMSAFloatType(MVT::v8f16, &Mips::MSA128HRegClass);
90 addMSAFloatType(MVT::v4f32, &Mips::MSA128WRegClass);
91 addMSAFloatType(MVT::v2f64, &Mips::MSA128DRegClass);
93 setTargetDAGCombine(ISD::AND);
94 setTargetDAGCombine(ISD::SRA);
95 setTargetDAGCombine(ISD::VSELECT);
96 setTargetDAGCombine(ISD::XOR);
99 if (!Subtarget->mipsSEUsesSoftFloat()) {
100 addRegisterClass(MVT::f32, &Mips::FGR32RegClass);
102 // When dealing with single precision only, use libcalls
103 if (!Subtarget->isSingleFloat()) {
104 if (Subtarget->isFP64bit())
105 addRegisterClass(MVT::f64, &Mips::FGR64RegClass);
107 addRegisterClass(MVT::f64, &Mips::AFGR64RegClass);
111 setOperationAction(ISD::SMUL_LOHI, MVT::i32, Custom);
112 setOperationAction(ISD::UMUL_LOHI, MVT::i32, Custom);
113 setOperationAction(ISD::MULHS, MVT::i32, Custom);
114 setOperationAction(ISD::MULHU, MVT::i32, Custom);
117 setOperationAction(ISD::MULHS, MVT::i64, Custom);
118 setOperationAction(ISD::MULHU, MVT::i64, Custom);
119 setOperationAction(ISD::MUL, MVT::i64, Custom);
122 setOperationAction(ISD::INTRINSIC_WO_CHAIN, MVT::i64, Custom);
123 setOperationAction(ISD::INTRINSIC_W_CHAIN, MVT::i64, Custom);
125 setOperationAction(ISD::SDIVREM, MVT::i32, Custom);
126 setOperationAction(ISD::UDIVREM, MVT::i32, Custom);
127 setOperationAction(ISD::SDIVREM, MVT::i64, Custom);
128 setOperationAction(ISD::UDIVREM, MVT::i64, Custom);
129 setOperationAction(ISD::ATOMIC_FENCE, MVT::Other, Custom);
130 setOperationAction(ISD::LOAD, MVT::i32, Custom);
131 setOperationAction(ISD::STORE, MVT::i32, Custom);
133 setTargetDAGCombine(ISD::ADDE);
134 setTargetDAGCombine(ISD::SUBE);
135 setTargetDAGCombine(ISD::MUL);
137 setOperationAction(ISD::INTRINSIC_WO_CHAIN, MVT::Other, Custom);
138 setOperationAction(ISD::INTRINSIC_W_CHAIN, MVT::Other, Custom);
139 setOperationAction(ISD::INTRINSIC_VOID, MVT::Other, Custom);
142 setOperationAction(ISD::LOAD, MVT::f64, Custom);
143 setOperationAction(ISD::STORE, MVT::f64, Custom);
146 computeRegisterProperties();
149 const MipsTargetLowering *
150 llvm::createMipsSETargetLowering(MipsTargetMachine &TM) {
151 return new MipsSETargetLowering(TM);
154 // Enable MSA support for the given integer type and Register class.
155 void MipsSETargetLowering::
156 addMSAIntType(MVT::SimpleValueType Ty, const TargetRegisterClass *RC) {
157 addRegisterClass(Ty, RC);
159 // Expand all builtin opcodes.
160 for (unsigned Opc = 0; Opc < ISD::BUILTIN_OP_END; ++Opc)
161 setOperationAction(Opc, Ty, Expand);
163 setOperationAction(ISD::BITCAST, Ty, Legal);
164 setOperationAction(ISD::LOAD, Ty, Legal);
165 setOperationAction(ISD::STORE, Ty, Legal);
166 setOperationAction(ISD::EXTRACT_VECTOR_ELT, Ty, Custom);
167 setOperationAction(ISD::INSERT_VECTOR_ELT, Ty, Legal);
168 setOperationAction(ISD::BUILD_VECTOR, Ty, Custom);
170 setOperationAction(ISD::ADD, Ty, Legal);
171 setOperationAction(ISD::AND, Ty, Legal);
172 setOperationAction(ISD::CTLZ, Ty, Legal);
173 setOperationAction(ISD::CTPOP, Ty, Legal);
174 setOperationAction(ISD::MUL, Ty, Legal);
175 setOperationAction(ISD::OR, Ty, Legal);
176 setOperationAction(ISD::SDIV, Ty, Legal);
177 setOperationAction(ISD::SREM, Ty, Legal);
178 setOperationAction(ISD::SHL, Ty, Legal);
179 setOperationAction(ISD::SRA, Ty, Legal);
180 setOperationAction(ISD::SRL, Ty, Legal);
181 setOperationAction(ISD::SUB, Ty, Legal);
182 setOperationAction(ISD::UDIV, Ty, Legal);
183 setOperationAction(ISD::UREM, Ty, Legal);
184 setOperationAction(ISD::VECTOR_SHUFFLE, Ty, Custom);
185 setOperationAction(ISD::VSELECT, Ty, Legal);
186 setOperationAction(ISD::XOR, Ty, Legal);
188 if (Ty == MVT::v4i32 || Ty == MVT::v2i64) {
189 setOperationAction(ISD::FP_TO_SINT, Ty, Legal);
190 setOperationAction(ISD::FP_TO_UINT, Ty, Legal);
191 setOperationAction(ISD::SINT_TO_FP, Ty, Legal);
192 setOperationAction(ISD::UINT_TO_FP, Ty, Legal);
195 setOperationAction(ISD::SETCC, Ty, Legal);
196 setCondCodeAction(ISD::SETNE, Ty, Expand);
197 setCondCodeAction(ISD::SETGE, Ty, Expand);
198 setCondCodeAction(ISD::SETGT, Ty, Expand);
199 setCondCodeAction(ISD::SETUGE, Ty, Expand);
200 setCondCodeAction(ISD::SETUGT, Ty, Expand);
203 // Enable MSA support for the given floating-point type and Register class.
204 void MipsSETargetLowering::
205 addMSAFloatType(MVT::SimpleValueType Ty, const TargetRegisterClass *RC) {
206 addRegisterClass(Ty, RC);
208 // Expand all builtin opcodes.
209 for (unsigned Opc = 0; Opc < ISD::BUILTIN_OP_END; ++Opc)
210 setOperationAction(Opc, Ty, Expand);
212 setOperationAction(ISD::LOAD, Ty, Legal);
213 setOperationAction(ISD::STORE, Ty, Legal);
214 setOperationAction(ISD::BITCAST, Ty, Legal);
215 setOperationAction(ISD::EXTRACT_VECTOR_ELT, Ty, Legal);
216 setOperationAction(ISD::INSERT_VECTOR_ELT, Ty, Legal);
217 setOperationAction(ISD::BUILD_VECTOR, Ty, Custom);
219 if (Ty != MVT::v8f16) {
220 setOperationAction(ISD::FABS, Ty, Legal);
221 setOperationAction(ISD::FADD, Ty, Legal);
222 setOperationAction(ISD::FDIV, Ty, Legal);
223 setOperationAction(ISD::FEXP2, Ty, Legal);
224 setOperationAction(ISD::FLOG2, Ty, Legal);
225 setOperationAction(ISD::FMA, Ty, Legal);
226 setOperationAction(ISD::FMUL, Ty, Legal);
227 setOperationAction(ISD::FRINT, Ty, Legal);
228 setOperationAction(ISD::FSQRT, Ty, Legal);
229 setOperationAction(ISD::FSUB, Ty, Legal);
230 setOperationAction(ISD::VSELECT, Ty, Legal);
232 setOperationAction(ISD::SETCC, Ty, Legal);
233 setCondCodeAction(ISD::SETOGE, Ty, Expand);
234 setCondCodeAction(ISD::SETOGT, Ty, Expand);
235 setCondCodeAction(ISD::SETUGE, Ty, Expand);
236 setCondCodeAction(ISD::SETUGT, Ty, Expand);
237 setCondCodeAction(ISD::SETGE, Ty, Expand);
238 setCondCodeAction(ISD::SETGT, Ty, Expand);
243 MipsSETargetLowering::allowsUnalignedMemoryAccesses(EVT VT, bool *Fast) const {
244 MVT::SimpleValueType SVT = VT.getSimpleVT().SimpleTy;
257 SDValue MipsSETargetLowering::LowerOperation(SDValue Op,
258 SelectionDAG &DAG) const {
259 switch(Op.getOpcode()) {
260 case ISD::LOAD: return lowerLOAD(Op, DAG);
261 case ISD::STORE: return lowerSTORE(Op, DAG);
262 case ISD::SMUL_LOHI: return lowerMulDiv(Op, MipsISD::Mult, true, true, DAG);
263 case ISD::UMUL_LOHI: return lowerMulDiv(Op, MipsISD::Multu, true, true, DAG);
264 case ISD::MULHS: return lowerMulDiv(Op, MipsISD::Mult, false, true, DAG);
265 case ISD::MULHU: return lowerMulDiv(Op, MipsISD::Multu, false, true, DAG);
266 case ISD::MUL: return lowerMulDiv(Op, MipsISD::Mult, true, false, DAG);
267 case ISD::SDIVREM: return lowerMulDiv(Op, MipsISD::DivRem, true, true, DAG);
268 case ISD::UDIVREM: return lowerMulDiv(Op, MipsISD::DivRemU, true, true,
270 case ISD::INTRINSIC_WO_CHAIN: return lowerINTRINSIC_WO_CHAIN(Op, DAG);
271 case ISD::INTRINSIC_W_CHAIN: return lowerINTRINSIC_W_CHAIN(Op, DAG);
272 case ISD::INTRINSIC_VOID: return lowerINTRINSIC_VOID(Op, DAG);
273 case ISD::EXTRACT_VECTOR_ELT: return lowerEXTRACT_VECTOR_ELT(Op, DAG);
274 case ISD::BUILD_VECTOR: return lowerBUILD_VECTOR(Op, DAG);
275 case ISD::VECTOR_SHUFFLE: return lowerVECTOR_SHUFFLE(Op, DAG);
278 return MipsTargetLowering::LowerOperation(Op, DAG);
282 // Transforms a subgraph in CurDAG if the following pattern is found:
283 // (addc multLo, Lo0), (adde multHi, Hi0),
285 // multHi/Lo: product of multiplication
286 // Lo0: initial value of Lo register
287 // Hi0: initial value of Hi register
288 // Return true if pattern matching was successful.
289 static bool selectMADD(SDNode *ADDENode, SelectionDAG *CurDAG) {
290 // ADDENode's second operand must be a flag output of an ADDC node in order
291 // for the matching to be successful.
292 SDNode *ADDCNode = ADDENode->getOperand(2).getNode();
294 if (ADDCNode->getOpcode() != ISD::ADDC)
297 SDValue MultHi = ADDENode->getOperand(0);
298 SDValue MultLo = ADDCNode->getOperand(0);
299 SDNode *MultNode = MultHi.getNode();
300 unsigned MultOpc = MultHi.getOpcode();
302 // MultHi and MultLo must be generated by the same node,
303 if (MultLo.getNode() != MultNode)
306 // and it must be a multiplication.
307 if (MultOpc != ISD::SMUL_LOHI && MultOpc != ISD::UMUL_LOHI)
310 // MultLo amd MultHi must be the first and second output of MultNode
312 if (MultHi.getResNo() != 1 || MultLo.getResNo() != 0)
315 // Transform this to a MADD only if ADDENode and ADDCNode are the only users
316 // of the values of MultNode, in which case MultNode will be removed in later
318 // If there exist users other than ADDENode or ADDCNode, this function returns
319 // here, which will result in MultNode being mapped to a single MULT
320 // instruction node rather than a pair of MULT and MADD instructions being
322 if (!MultHi.hasOneUse() || !MultLo.hasOneUse())
327 // Initialize accumulator.
328 SDValue ACCIn = CurDAG->getNode(MipsISD::MTLOHI, DL, MVT::Untyped,
329 ADDCNode->getOperand(1),
330 ADDENode->getOperand(1));
332 // create MipsMAdd(u) node
333 MultOpc = MultOpc == ISD::UMUL_LOHI ? MipsISD::MAddu : MipsISD::MAdd;
335 SDValue MAdd = CurDAG->getNode(MultOpc, DL, MVT::Untyped,
336 MultNode->getOperand(0),// Factor 0
337 MultNode->getOperand(1),// Factor 1
340 // replace uses of adde and addc here
341 if (!SDValue(ADDCNode, 0).use_empty()) {
342 SDValue LoOut = CurDAG->getNode(MipsISD::MFLO, DL, MVT::i32, MAdd);
343 CurDAG->ReplaceAllUsesOfValueWith(SDValue(ADDCNode, 0), LoOut);
345 if (!SDValue(ADDENode, 0).use_empty()) {
346 SDValue HiOut = CurDAG->getNode(MipsISD::MFHI, DL, MVT::i32, MAdd);
347 CurDAG->ReplaceAllUsesOfValueWith(SDValue(ADDENode, 0), HiOut);
354 // Transforms a subgraph in CurDAG if the following pattern is found:
355 // (addc Lo0, multLo), (sube Hi0, multHi),
357 // multHi/Lo: product of multiplication
358 // Lo0: initial value of Lo register
359 // Hi0: initial value of Hi register
360 // Return true if pattern matching was successful.
361 static bool selectMSUB(SDNode *SUBENode, SelectionDAG *CurDAG) {
362 // SUBENode's second operand must be a flag output of an SUBC node in order
363 // for the matching to be successful.
364 SDNode *SUBCNode = SUBENode->getOperand(2).getNode();
366 if (SUBCNode->getOpcode() != ISD::SUBC)
369 SDValue MultHi = SUBENode->getOperand(1);
370 SDValue MultLo = SUBCNode->getOperand(1);
371 SDNode *MultNode = MultHi.getNode();
372 unsigned MultOpc = MultHi.getOpcode();
374 // MultHi and MultLo must be generated by the same node,
375 if (MultLo.getNode() != MultNode)
378 // and it must be a multiplication.
379 if (MultOpc != ISD::SMUL_LOHI && MultOpc != ISD::UMUL_LOHI)
382 // MultLo amd MultHi must be the first and second output of MultNode
384 if (MultHi.getResNo() != 1 || MultLo.getResNo() != 0)
387 // Transform this to a MSUB only if SUBENode and SUBCNode are the only users
388 // of the values of MultNode, in which case MultNode will be removed in later
390 // If there exist users other than SUBENode or SUBCNode, this function returns
391 // here, which will result in MultNode being mapped to a single MULT
392 // instruction node rather than a pair of MULT and MSUB instructions being
394 if (!MultHi.hasOneUse() || !MultLo.hasOneUse())
399 // Initialize accumulator.
400 SDValue ACCIn = CurDAG->getNode(MipsISD::MTLOHI, DL, MVT::Untyped,
401 SUBCNode->getOperand(0),
402 SUBENode->getOperand(0));
404 // create MipsSub(u) node
405 MultOpc = MultOpc == ISD::UMUL_LOHI ? MipsISD::MSubu : MipsISD::MSub;
407 SDValue MSub = CurDAG->getNode(MultOpc, DL, MVT::Glue,
408 MultNode->getOperand(0),// Factor 0
409 MultNode->getOperand(1),// Factor 1
412 // replace uses of sube and subc here
413 if (!SDValue(SUBCNode, 0).use_empty()) {
414 SDValue LoOut = CurDAG->getNode(MipsISD::MFLO, DL, MVT::i32, MSub);
415 CurDAG->ReplaceAllUsesOfValueWith(SDValue(SUBCNode, 0), LoOut);
417 if (!SDValue(SUBENode, 0).use_empty()) {
418 SDValue HiOut = CurDAG->getNode(MipsISD::MFHI, DL, MVT::i32, MSub);
419 CurDAG->ReplaceAllUsesOfValueWith(SDValue(SUBENode, 0), HiOut);
425 static SDValue performADDECombine(SDNode *N, SelectionDAG &DAG,
426 TargetLowering::DAGCombinerInfo &DCI,
427 const MipsSubtarget *Subtarget) {
428 if (DCI.isBeforeLegalize())
431 if (Subtarget->hasMips32() && N->getValueType(0) == MVT::i32 &&
433 return SDValue(N, 0);
438 // Fold zero extensions into MipsISD::VEXTRACT_[SZ]EXT_ELT
440 // Performs the following transformations:
441 // - Changes MipsISD::VEXTRACT_[SZ]EXT_ELT to zero extension if its
442 // sign/zero-extension is completely overwritten by the new one performed by
444 // - Removes redundant zero extensions performed by an ISD::AND.
445 static SDValue performANDCombine(SDNode *N, SelectionDAG &DAG,
446 TargetLowering::DAGCombinerInfo &DCI,
447 const MipsSubtarget *Subtarget) {
448 if (!Subtarget->hasMSA())
451 SDValue Op0 = N->getOperand(0);
452 SDValue Op1 = N->getOperand(1);
453 unsigned Op0Opcode = Op0->getOpcode();
455 // (and (MipsVExtract[SZ]Ext $a, $b, $c), imm:$d)
456 // where $d + 1 == 2^n and n == 32
457 // or $d + 1 == 2^n and n <= 32 and ZExt
458 // -> (MipsVExtractZExt $a, $b, $c)
459 if (Op0Opcode == MipsISD::VEXTRACT_SEXT_ELT ||
460 Op0Opcode == MipsISD::VEXTRACT_ZEXT_ELT) {
461 ConstantSDNode *Mask = dyn_cast<ConstantSDNode>(Op1);
466 int32_t Log2IfPositive = (Mask->getAPIntValue() + 1).exactLogBase2();
468 if (Log2IfPositive <= 0)
469 return SDValue(); // Mask+1 is not a power of 2
471 SDValue Op0Op2 = Op0->getOperand(2);
472 EVT ExtendTy = cast<VTSDNode>(Op0Op2)->getVT();
473 unsigned ExtendTySize = ExtendTy.getSizeInBits();
474 unsigned Log2 = Log2IfPositive;
476 if ((Op0Opcode == MipsISD::VEXTRACT_ZEXT_ELT && Log2 >= ExtendTySize) ||
477 Log2 == ExtendTySize) {
478 SDValue Ops[] = { Op0->getOperand(0), Op0->getOperand(1), Op0Op2 };
479 DAG.MorphNodeTo(Op0.getNode(), MipsISD::VEXTRACT_ZEXT_ELT,
480 Op0->getVTList(), Ops, Op0->getNumOperands());
488 static SDValue performSUBECombine(SDNode *N, SelectionDAG &DAG,
489 TargetLowering::DAGCombinerInfo &DCI,
490 const MipsSubtarget *Subtarget) {
491 if (DCI.isBeforeLegalize())
494 if (Subtarget->hasMips32() && N->getValueType(0) == MVT::i32 &&
496 return SDValue(N, 0);
501 static SDValue genConstMult(SDValue X, uint64_t C, SDLoc DL, EVT VT,
502 EVT ShiftTy, SelectionDAG &DAG) {
503 // Clear the upper (64 - VT.sizeInBits) bits.
504 C &= ((uint64_t)-1) >> (64 - VT.getSizeInBits());
508 return DAG.getConstant(0, VT);
514 // If c is power of 2, return (shl x, log2(c)).
515 if (isPowerOf2_64(C))
516 return DAG.getNode(ISD::SHL, DL, VT, X,
517 DAG.getConstant(Log2_64(C), ShiftTy));
519 unsigned Log2Ceil = Log2_64_Ceil(C);
520 uint64_t Floor = 1LL << Log2_64(C);
521 uint64_t Ceil = Log2Ceil == 64 ? 0LL : 1LL << Log2Ceil;
523 // If |c - floor_c| <= |c - ceil_c|,
524 // where floor_c = pow(2, floor(log2(c))) and ceil_c = pow(2, ceil(log2(c))),
525 // return (add constMult(x, floor_c), constMult(x, c - floor_c)).
526 if (C - Floor <= Ceil - C) {
527 SDValue Op0 = genConstMult(X, Floor, DL, VT, ShiftTy, DAG);
528 SDValue Op1 = genConstMult(X, C - Floor, DL, VT, ShiftTy, DAG);
529 return DAG.getNode(ISD::ADD, DL, VT, Op0, Op1);
532 // If |c - floor_c| > |c - ceil_c|,
533 // return (sub constMult(x, ceil_c), constMult(x, ceil_c - c)).
534 SDValue Op0 = genConstMult(X, Ceil, DL, VT, ShiftTy, DAG);
535 SDValue Op1 = genConstMult(X, Ceil - C, DL, VT, ShiftTy, DAG);
536 return DAG.getNode(ISD::SUB, DL, VT, Op0, Op1);
539 static SDValue performMULCombine(SDNode *N, SelectionDAG &DAG,
540 const TargetLowering::DAGCombinerInfo &DCI,
541 const MipsSETargetLowering *TL) {
542 EVT VT = N->getValueType(0);
544 if (ConstantSDNode *C = dyn_cast<ConstantSDNode>(N->getOperand(1)))
546 return genConstMult(N->getOperand(0), C->getZExtValue(), SDLoc(N),
547 VT, TL->getScalarShiftAmountTy(VT), DAG);
549 return SDValue(N, 0);
552 static SDValue performDSPShiftCombine(unsigned Opc, SDNode *N, EVT Ty,
554 const MipsSubtarget *Subtarget) {
555 // See if this is a vector splat immediate node.
556 APInt SplatValue, SplatUndef;
557 unsigned SplatBitSize;
559 unsigned EltSize = Ty.getVectorElementType().getSizeInBits();
560 BuildVectorSDNode *BV = dyn_cast<BuildVectorSDNode>(N->getOperand(1));
563 !BV->isConstantSplat(SplatValue, SplatUndef, SplatBitSize, HasAnyUndefs,
564 EltSize, !Subtarget->isLittle()) ||
565 (SplatBitSize != EltSize) ||
566 (SplatValue.getZExtValue() >= EltSize))
569 return DAG.getNode(Opc, SDLoc(N), Ty, N->getOperand(0),
570 DAG.getConstant(SplatValue.getZExtValue(), MVT::i32));
573 static SDValue performSHLCombine(SDNode *N, SelectionDAG &DAG,
574 TargetLowering::DAGCombinerInfo &DCI,
575 const MipsSubtarget *Subtarget) {
576 EVT Ty = N->getValueType(0);
578 if ((Ty != MVT::v2i16) && (Ty != MVT::v4i8))
581 return performDSPShiftCombine(MipsISD::SHLL_DSP, N, Ty, DAG, Subtarget);
584 // Fold sign-extensions into MipsISD::VEXTRACT_[SZ]EXT_ELT for MSA and fold
585 // constant splats into MipsISD::SHRA_DSP for DSPr2.
587 // Performs the following transformations:
588 // - Changes MipsISD::VEXTRACT_[SZ]EXT_ELT to sign extension if its
589 // sign/zero-extension is completely overwritten by the new one performed by
590 // the ISD::SRA and ISD::SHL nodes.
591 // - Removes redundant sign extensions performed by an ISD::SRA and ISD::SHL
594 // See performDSPShiftCombine for more information about the transformation
596 static SDValue performSRACombine(SDNode *N, SelectionDAG &DAG,
597 TargetLowering::DAGCombinerInfo &DCI,
598 const MipsSubtarget *Subtarget) {
599 EVT Ty = N->getValueType(0);
601 if (Subtarget->hasMSA()) {
602 SDValue Op0 = N->getOperand(0);
603 SDValue Op1 = N->getOperand(1);
605 // (sra (shl (MipsVExtract[SZ]Ext $a, $b, $c), imm:$d), imm:$d)
606 // where $d + sizeof($c) == 32
607 // or $d + sizeof($c) <= 32 and SExt
608 // -> (MipsVExtractSExt $a, $b, $c)
609 if (Op0->getOpcode() == ISD::SHL && Op1 == Op0->getOperand(1)) {
610 SDValue Op0Op0 = Op0->getOperand(0);
611 ConstantSDNode *ShAmount = dyn_cast<ConstantSDNode>(Op1);
616 if (Op0Op0->getOpcode() != MipsISD::VEXTRACT_SEXT_ELT &&
617 Op0Op0->getOpcode() != MipsISD::VEXTRACT_ZEXT_ELT)
620 EVT ExtendTy = cast<VTSDNode>(Op0Op0->getOperand(2))->getVT();
621 unsigned TotalBits = ShAmount->getZExtValue() + ExtendTy.getSizeInBits();
623 if (TotalBits == 32 ||
624 (Op0Op0->getOpcode() == MipsISD::VEXTRACT_SEXT_ELT &&
626 SDValue Ops[] = { Op0Op0->getOperand(0), Op0Op0->getOperand(1),
627 Op0Op0->getOperand(2) };
628 DAG.MorphNodeTo(Op0Op0.getNode(), MipsISD::VEXTRACT_SEXT_ELT,
629 Op0Op0->getVTList(), Ops, Op0Op0->getNumOperands());
635 if ((Ty != MVT::v2i16) && ((Ty != MVT::v4i8) || !Subtarget->hasDSPR2()))
638 return performDSPShiftCombine(MipsISD::SHRA_DSP, N, Ty, DAG, Subtarget);
642 static SDValue performSRLCombine(SDNode *N, SelectionDAG &DAG,
643 TargetLowering::DAGCombinerInfo &DCI,
644 const MipsSubtarget *Subtarget) {
645 EVT Ty = N->getValueType(0);
647 if (((Ty != MVT::v2i16) || !Subtarget->hasDSPR2()) && (Ty != MVT::v4i8))
650 return performDSPShiftCombine(MipsISD::SHRL_DSP, N, Ty, DAG, Subtarget);
653 static bool isLegalDSPCondCode(EVT Ty, ISD::CondCode CC) {
654 bool IsV216 = (Ty == MVT::v2i16);
658 case ISD::SETNE: return true;
662 case ISD::SETGE: return IsV216;
666 case ISD::SETUGE: return !IsV216;
667 default: return false;
671 static SDValue performSETCCCombine(SDNode *N, SelectionDAG &DAG) {
672 EVT Ty = N->getValueType(0);
674 if ((Ty != MVT::v2i16) && (Ty != MVT::v4i8))
677 if (!isLegalDSPCondCode(Ty, cast<CondCodeSDNode>(N->getOperand(2))->get()))
680 return DAG.getNode(MipsISD::SETCC_DSP, SDLoc(N), Ty, N->getOperand(0),
681 N->getOperand(1), N->getOperand(2));
684 static SDValue performVSELECTCombine(SDNode *N, SelectionDAG &DAG) {
685 EVT Ty = N->getValueType(0);
687 if (Ty.is128BitVector() && Ty.isInteger()) {
688 // Try the following combines:
689 // (vselect (setcc $a, $b, SETLT), $b, $a)) -> (vsmax $a, $b)
690 // (vselect (setcc $a, $b, SETLE), $b, $a)) -> (vsmax $a, $b)
691 // (vselect (setcc $a, $b, SETLT), $a, $b)) -> (vsmin $a, $b)
692 // (vselect (setcc $a, $b, SETLE), $a, $b)) -> (vsmin $a, $b)
693 // (vselect (setcc $a, $b, SETULT), $b, $a)) -> (vumax $a, $b)
694 // (vselect (setcc $a, $b, SETULE), $b, $a)) -> (vumax $a, $b)
695 // (vselect (setcc $a, $b, SETULT), $a, $b)) -> (vumin $a, $b)
696 // (vselect (setcc $a, $b, SETULE), $a, $b)) -> (vumin $a, $b)
697 // SETGT/SETGE/SETUGT/SETUGE variants of these will show up initially but
698 // will be expanded to equivalent SETLT/SETLE/SETULT/SETULE versions by the
700 SDValue Op0 = N->getOperand(0);
702 if (Op0->getOpcode() != ISD::SETCC)
705 ISD::CondCode CondCode = cast<CondCodeSDNode>(Op0->getOperand(2))->get();
708 if (CondCode == ISD::SETLT || CondCode == ISD::SETLE)
710 else if (CondCode == ISD::SETULT || CondCode == ISD::SETULE)
715 SDValue Op1 = N->getOperand(1);
716 SDValue Op2 = N->getOperand(2);
717 SDValue Op0Op0 = Op0->getOperand(0);
718 SDValue Op0Op1 = Op0->getOperand(1);
720 if (Op1 == Op0Op0 && Op2 == Op0Op1)
721 return DAG.getNode(Signed ? MipsISD::VSMIN : MipsISD::VUMIN, SDLoc(N),
723 else if (Op1 == Op0Op1 && Op2 == Op0Op0)
724 return DAG.getNode(Signed ? MipsISD::VSMAX : MipsISD::VUMAX, SDLoc(N),
726 } else if ((Ty == MVT::v2i16) || (Ty == MVT::v4i8)) {
727 SDValue SetCC = N->getOperand(0);
729 if (SetCC.getOpcode() != MipsISD::SETCC_DSP)
732 return DAG.getNode(MipsISD::SELECT_CC_DSP, SDLoc(N), Ty,
733 SetCC.getOperand(0), SetCC.getOperand(1),
734 N->getOperand(1), N->getOperand(2), SetCC.getOperand(2));
740 static SDValue performXORCombine(SDNode *N, SelectionDAG &DAG,
741 const MipsSubtarget *Subtarget) {
742 EVT Ty = N->getValueType(0);
744 if (Subtarget->hasMSA() && Ty.is128BitVector() && Ty.isInteger()) {
745 // Try the following combines:
746 // (xor (or $a, $b), (build_vector allones))
747 // (xor (or $a, $b), (bitcast (build_vector allones)))
748 SDValue Op0 = N->getOperand(0);
749 SDValue Op1 = N->getOperand(1);
752 if (ISD::isBuildVectorAllOnes(Op0.getNode()))
754 else if (ISD::isBuildVectorAllOnes(Op1.getNode()))
759 if (NotOp->getOpcode() == ISD::OR)
760 return DAG.getNode(MipsISD::VNOR, SDLoc(N), Ty, NotOp->getOperand(0),
761 NotOp->getOperand(1));
768 MipsSETargetLowering::PerformDAGCombine(SDNode *N, DAGCombinerInfo &DCI) const {
769 SelectionDAG &DAG = DCI.DAG;
772 switch (N->getOpcode()) {
774 return performADDECombine(N, DAG, DCI, Subtarget);
776 Val = performANDCombine(N, DAG, DCI, Subtarget);
779 return performSUBECombine(N, DAG, DCI, Subtarget);
781 return performMULCombine(N, DAG, DCI, this);
783 return performSHLCombine(N, DAG, DCI, Subtarget);
785 return performSRACombine(N, DAG, DCI, Subtarget);
787 return performSRLCombine(N, DAG, DCI, Subtarget);
789 return performVSELECTCombine(N, DAG);
791 Val = performXORCombine(N, DAG, Subtarget);
794 Val = performSETCCCombine(N, DAG);
801 return MipsTargetLowering::PerformDAGCombine(N, DCI);
805 MipsSETargetLowering::EmitInstrWithCustomInserter(MachineInstr *MI,
806 MachineBasicBlock *BB) const {
807 switch (MI->getOpcode()) {
809 return MipsTargetLowering::EmitInstrWithCustomInserter(MI, BB);
810 case Mips::BPOSGE32_PSEUDO:
811 return emitBPOSGE32(MI, BB);
812 case Mips::SNZ_B_PSEUDO:
813 return emitMSACBranchPseudo(MI, BB, Mips::BNZ_B);
814 case Mips::SNZ_H_PSEUDO:
815 return emitMSACBranchPseudo(MI, BB, Mips::BNZ_H);
816 case Mips::SNZ_W_PSEUDO:
817 return emitMSACBranchPseudo(MI, BB, Mips::BNZ_W);
818 case Mips::SNZ_D_PSEUDO:
819 return emitMSACBranchPseudo(MI, BB, Mips::BNZ_D);
820 case Mips::SNZ_V_PSEUDO:
821 return emitMSACBranchPseudo(MI, BB, Mips::BNZ_V);
822 case Mips::SZ_B_PSEUDO:
823 return emitMSACBranchPseudo(MI, BB, Mips::BZ_B);
824 case Mips::SZ_H_PSEUDO:
825 return emitMSACBranchPseudo(MI, BB, Mips::BZ_H);
826 case Mips::SZ_W_PSEUDO:
827 return emitMSACBranchPseudo(MI, BB, Mips::BZ_W);
828 case Mips::SZ_D_PSEUDO:
829 return emitMSACBranchPseudo(MI, BB, Mips::BZ_D);
830 case Mips::SZ_V_PSEUDO:
831 return emitMSACBranchPseudo(MI, BB, Mips::BZ_V);
832 case Mips::COPY_FW_PSEUDO:
833 return emitCOPY_FW(MI, BB);
834 case Mips::COPY_FD_PSEUDO:
835 return emitCOPY_FD(MI, BB);
836 case Mips::INSERT_FW_PSEUDO:
837 return emitINSERT_FW(MI, BB);
838 case Mips::INSERT_FD_PSEUDO:
839 return emitINSERT_FD(MI, BB);
840 case Mips::FILL_FW_PSEUDO:
841 return emitFILL_FW(MI, BB);
842 case Mips::FILL_FD_PSEUDO:
843 return emitFILL_FD(MI, BB);
844 case Mips::FEXP2_W_1_PSEUDO:
845 return emitFEXP2_W_1(MI, BB);
846 case Mips::FEXP2_D_1_PSEUDO:
847 return emitFEXP2_D_1(MI, BB);
851 bool MipsSETargetLowering::
852 isEligibleForTailCallOptimization(const MipsCC &MipsCCInfo,
853 unsigned NextStackOffset,
854 const MipsFunctionInfo& FI) const {
855 if (!EnableMipsTailCalls)
858 // Return false if either the callee or caller has a byval argument.
859 if (MipsCCInfo.hasByValArg() || FI.hasByvalArg())
862 // Return true if the callee's argument area is no larger than the
864 return NextStackOffset <= FI.getIncomingArgSize();
867 void MipsSETargetLowering::
868 getOpndList(SmallVectorImpl<SDValue> &Ops,
869 std::deque< std::pair<unsigned, SDValue> > &RegsToPass,
870 bool IsPICCall, bool GlobalOrExternal, bool InternalLinkage,
871 CallLoweringInfo &CLI, SDValue Callee, SDValue Chain) const {
872 // T9 should contain the address of the callee function if
873 // -reloction-model=pic or it is an indirect call.
874 if (IsPICCall || !GlobalOrExternal) {
875 unsigned T9Reg = IsN64 ? Mips::T9_64 : Mips::T9;
876 RegsToPass.push_front(std::make_pair(T9Reg, Callee));
878 Ops.push_back(Callee);
880 MipsTargetLowering::getOpndList(Ops, RegsToPass, IsPICCall, GlobalOrExternal,
881 InternalLinkage, CLI, Callee, Chain);
884 SDValue MipsSETargetLowering::lowerLOAD(SDValue Op, SelectionDAG &DAG) const {
885 LoadSDNode &Nd = *cast<LoadSDNode>(Op);
887 if (Nd.getMemoryVT() != MVT::f64 || !NoDPLoadStore)
888 return MipsTargetLowering::lowerLOAD(Op, DAG);
890 // Replace a double precision load with two i32 loads and a buildpair64.
892 SDValue Ptr = Nd.getBasePtr(), Chain = Nd.getChain();
893 EVT PtrVT = Ptr.getValueType();
895 // i32 load from lower address.
896 SDValue Lo = DAG.getLoad(MVT::i32, DL, Chain, Ptr,
897 MachinePointerInfo(), Nd.isVolatile(),
898 Nd.isNonTemporal(), Nd.isInvariant(),
901 // i32 load from higher address.
902 Ptr = DAG.getNode(ISD::ADD, DL, PtrVT, Ptr, DAG.getConstant(4, PtrVT));
903 SDValue Hi = DAG.getLoad(MVT::i32, DL, Lo.getValue(1), Ptr,
904 MachinePointerInfo(), Nd.isVolatile(),
905 Nd.isNonTemporal(), Nd.isInvariant(),
906 std::min(Nd.getAlignment(), 4U));
908 if (!Subtarget->isLittle())
911 SDValue BP = DAG.getNode(MipsISD::BuildPairF64, DL, MVT::f64, Lo, Hi);
912 SDValue Ops[2] = {BP, Hi.getValue(1)};
913 return DAG.getMergeValues(Ops, 2, DL);
916 SDValue MipsSETargetLowering::lowerSTORE(SDValue Op, SelectionDAG &DAG) const {
917 StoreSDNode &Nd = *cast<StoreSDNode>(Op);
919 if (Nd.getMemoryVT() != MVT::f64 || !NoDPLoadStore)
920 return MipsTargetLowering::lowerSTORE(Op, DAG);
922 // Replace a double precision store with two extractelement64s and i32 stores.
924 SDValue Val = Nd.getValue(), Ptr = Nd.getBasePtr(), Chain = Nd.getChain();
925 EVT PtrVT = Ptr.getValueType();
926 SDValue Lo = DAG.getNode(MipsISD::ExtractElementF64, DL, MVT::i32,
927 Val, DAG.getConstant(0, MVT::i32));
928 SDValue Hi = DAG.getNode(MipsISD::ExtractElementF64, DL, MVT::i32,
929 Val, DAG.getConstant(1, MVT::i32));
931 if (!Subtarget->isLittle())
934 // i32 store to lower address.
935 Chain = DAG.getStore(Chain, DL, Lo, Ptr, MachinePointerInfo(),
936 Nd.isVolatile(), Nd.isNonTemporal(), Nd.getAlignment(),
939 // i32 store to higher address.
940 Ptr = DAG.getNode(ISD::ADD, DL, PtrVT, Ptr, DAG.getConstant(4, PtrVT));
941 return DAG.getStore(Chain, DL, Hi, Ptr, MachinePointerInfo(),
942 Nd.isVolatile(), Nd.isNonTemporal(),
943 std::min(Nd.getAlignment(), 4U), Nd.getTBAAInfo());
946 SDValue MipsSETargetLowering::lowerMulDiv(SDValue Op, unsigned NewOpc,
947 bool HasLo, bool HasHi,
948 SelectionDAG &DAG) const {
949 EVT Ty = Op.getOperand(0).getValueType();
951 SDValue Mult = DAG.getNode(NewOpc, DL, MVT::Untyped,
952 Op.getOperand(0), Op.getOperand(1));
956 Lo = DAG.getNode(MipsISD::MFLO, DL, Ty, Mult);
958 Hi = DAG.getNode(MipsISD::MFHI, DL, Ty, Mult);
960 if (!HasLo || !HasHi)
961 return HasLo ? Lo : Hi;
963 SDValue Vals[] = { Lo, Hi };
964 return DAG.getMergeValues(Vals, 2, DL);
968 static SDValue initAccumulator(SDValue In, SDLoc DL, SelectionDAG &DAG) {
969 SDValue InLo = DAG.getNode(ISD::EXTRACT_ELEMENT, DL, MVT::i32, In,
970 DAG.getConstant(0, MVT::i32));
971 SDValue InHi = DAG.getNode(ISD::EXTRACT_ELEMENT, DL, MVT::i32, In,
972 DAG.getConstant(1, MVT::i32));
973 return DAG.getNode(MipsISD::MTLOHI, DL, MVT::Untyped, InLo, InHi);
976 static SDValue extractLOHI(SDValue Op, SDLoc DL, SelectionDAG &DAG) {
977 SDValue Lo = DAG.getNode(MipsISD::MFLO, DL, MVT::i32, Op);
978 SDValue Hi = DAG.getNode(MipsISD::MFHI, DL, MVT::i32, Op);
979 return DAG.getNode(ISD::BUILD_PAIR, DL, MVT::i64, Lo, Hi);
982 // This function expands mips intrinsic nodes which have 64-bit input operands
985 // out64 = intrinsic-node in64
987 // lo = copy (extract-element (in64, 0))
988 // hi = copy (extract-element (in64, 1))
989 // mips-specific-node
992 // out64 = merge-values (v0, v1)
994 static SDValue lowerDSPIntr(SDValue Op, SelectionDAG &DAG, unsigned Opc) {
996 bool HasChainIn = Op->getOperand(0).getValueType() == MVT::Other;
997 SmallVector<SDValue, 3> Ops;
1000 // See if Op has a chain input.
1002 Ops.push_back(Op->getOperand(OpNo++));
1004 // The next operand is the intrinsic opcode.
1005 assert(Op->getOperand(OpNo).getOpcode() == ISD::TargetConstant);
1007 // See if the next operand has type i64.
1008 SDValue Opnd = Op->getOperand(++OpNo), In64;
1010 if (Opnd.getValueType() == MVT::i64)
1011 In64 = initAccumulator(Opnd, DL, DAG);
1013 Ops.push_back(Opnd);
1015 // Push the remaining operands.
1016 for (++OpNo ; OpNo < Op->getNumOperands(); ++OpNo)
1017 Ops.push_back(Op->getOperand(OpNo));
1019 // Add In64 to the end of the list.
1021 Ops.push_back(In64);
1024 SmallVector<EVT, 2> ResTys;
1026 for (SDNode::value_iterator I = Op->value_begin(), E = Op->value_end();
1028 ResTys.push_back((*I == MVT::i64) ? MVT::Untyped : *I);
1031 SDValue Val = DAG.getNode(Opc, DL, ResTys, &Ops[0], Ops.size());
1032 SDValue Out = (ResTys[0] == MVT::Untyped) ? extractLOHI(Val, DL, DAG) : Val;
1037 assert(Val->getValueType(1) == MVT::Other);
1038 SDValue Vals[] = { Out, SDValue(Val.getNode(), 1) };
1039 return DAG.getMergeValues(Vals, 2, DL);
1042 // Lower an MSA copy intrinsic into the specified SelectionDAG node
1043 static SDValue lowerMSACopyIntr(SDValue Op, SelectionDAG &DAG, unsigned Opc) {
1045 SDValue Vec = Op->getOperand(1);
1046 SDValue Idx = Op->getOperand(2);
1047 EVT ResTy = Op->getValueType(0);
1048 EVT EltTy = Vec->getValueType(0).getVectorElementType();
1050 SDValue Result = DAG.getNode(Opc, DL, ResTy, Vec, Idx,
1051 DAG.getValueType(EltTy));
1057 lowerMSASplatImm(SDLoc DL, EVT ResTy, SDValue ImmOp, SelectionDAG &DAG) {
1058 EVT ViaVecTy = ResTy;
1059 SmallVector<SDValue, 16> Ops;
1062 if (ViaVecTy == MVT::v2i64) {
1063 ImmHiOp = DAG.getNode(ISD::SRA, DL, MVT::i32, ImmOp,
1064 DAG.getConstant(31, MVT::i32));
1065 for (unsigned i = 0; i < ViaVecTy.getVectorNumElements(); ++i) {
1066 Ops.push_back(ImmHiOp);
1067 Ops.push_back(ImmOp);
1069 ViaVecTy = MVT::v4i32;
1071 for (unsigned i = 0; i < ResTy.getVectorNumElements(); ++i)
1072 Ops.push_back(ImmOp);
1075 SDValue Result = DAG.getNode(ISD::BUILD_VECTOR, DL, ViaVecTy, &Ops[0],
1078 if (ResTy != ViaVecTy)
1079 Result = DAG.getNode(ISD::BITCAST, DL, ResTy, Result);
1085 lowerMSASplatImm(SDValue Op, unsigned ImmOp, SelectionDAG &DAG) {
1086 return lowerMSASplatImm(SDLoc(Op), Op->getValueType(0),
1087 Op->getOperand(ImmOp), DAG);
1090 SDValue MipsSETargetLowering::lowerINTRINSIC_WO_CHAIN(SDValue Op,
1091 SelectionDAG &DAG) const {
1094 switch (cast<ConstantSDNode>(Op->getOperand(0))->getZExtValue()) {
1097 case Intrinsic::mips_shilo:
1098 return lowerDSPIntr(Op, DAG, MipsISD::SHILO);
1099 case Intrinsic::mips_dpau_h_qbl:
1100 return lowerDSPIntr(Op, DAG, MipsISD::DPAU_H_QBL);
1101 case Intrinsic::mips_dpau_h_qbr:
1102 return lowerDSPIntr(Op, DAG, MipsISD::DPAU_H_QBR);
1103 case Intrinsic::mips_dpsu_h_qbl:
1104 return lowerDSPIntr(Op, DAG, MipsISD::DPSU_H_QBL);
1105 case Intrinsic::mips_dpsu_h_qbr:
1106 return lowerDSPIntr(Op, DAG, MipsISD::DPSU_H_QBR);
1107 case Intrinsic::mips_dpa_w_ph:
1108 return lowerDSPIntr(Op, DAG, MipsISD::DPA_W_PH);
1109 case Intrinsic::mips_dps_w_ph:
1110 return lowerDSPIntr(Op, DAG, MipsISD::DPS_W_PH);
1111 case Intrinsic::mips_dpax_w_ph:
1112 return lowerDSPIntr(Op, DAG, MipsISD::DPAX_W_PH);
1113 case Intrinsic::mips_dpsx_w_ph:
1114 return lowerDSPIntr(Op, DAG, MipsISD::DPSX_W_PH);
1115 case Intrinsic::mips_mulsa_w_ph:
1116 return lowerDSPIntr(Op, DAG, MipsISD::MULSA_W_PH);
1117 case Intrinsic::mips_mult:
1118 return lowerDSPIntr(Op, DAG, MipsISD::Mult);
1119 case Intrinsic::mips_multu:
1120 return lowerDSPIntr(Op, DAG, MipsISD::Multu);
1121 case Intrinsic::mips_madd:
1122 return lowerDSPIntr(Op, DAG, MipsISD::MAdd);
1123 case Intrinsic::mips_maddu:
1124 return lowerDSPIntr(Op, DAG, MipsISD::MAddu);
1125 case Intrinsic::mips_msub:
1126 return lowerDSPIntr(Op, DAG, MipsISD::MSub);
1127 case Intrinsic::mips_msubu:
1128 return lowerDSPIntr(Op, DAG, MipsISD::MSubu);
1129 case Intrinsic::mips_addv_b:
1130 case Intrinsic::mips_addv_h:
1131 case Intrinsic::mips_addv_w:
1132 case Intrinsic::mips_addv_d:
1133 return DAG.getNode(ISD::ADD, DL, Op->getValueType(0), Op->getOperand(1),
1135 case Intrinsic::mips_addvi_b:
1136 case Intrinsic::mips_addvi_h:
1137 case Intrinsic::mips_addvi_w:
1138 case Intrinsic::mips_addvi_d:
1139 return DAG.getNode(ISD::ADD, DL, Op->getValueType(0), Op->getOperand(1),
1140 lowerMSASplatImm(Op, 2, DAG));
1141 case Intrinsic::mips_and_v:
1142 return DAG.getNode(ISD::AND, DL, Op->getValueType(0), Op->getOperand(1),
1144 case Intrinsic::mips_andi_b:
1145 return DAG.getNode(ISD::AND, DL, Op->getValueType(0), Op->getOperand(1),
1146 lowerMSASplatImm(Op, 2, DAG));
1147 case Intrinsic::mips_bnz_b:
1148 case Intrinsic::mips_bnz_h:
1149 case Intrinsic::mips_bnz_w:
1150 case Intrinsic::mips_bnz_d:
1151 return DAG.getNode(MipsISD::VALL_NONZERO, DL, Op->getValueType(0),
1153 case Intrinsic::mips_bnz_v:
1154 return DAG.getNode(MipsISD::VANY_NONZERO, DL, Op->getValueType(0),
1156 case Intrinsic::mips_bsel_v:
1157 return DAG.getNode(ISD::VSELECT, DL, Op->getValueType(0),
1158 Op->getOperand(1), Op->getOperand(2),
1160 case Intrinsic::mips_bseli_b:
1161 return DAG.getNode(ISD::VSELECT, DL, Op->getValueType(0),
1162 Op->getOperand(1), Op->getOperand(2),
1163 lowerMSASplatImm(Op, 3, DAG));
1164 case Intrinsic::mips_bz_b:
1165 case Intrinsic::mips_bz_h:
1166 case Intrinsic::mips_bz_w:
1167 case Intrinsic::mips_bz_d:
1168 return DAG.getNode(MipsISD::VALL_ZERO, DL, Op->getValueType(0),
1170 case Intrinsic::mips_bz_v:
1171 return DAG.getNode(MipsISD::VANY_ZERO, DL, Op->getValueType(0),
1173 case Intrinsic::mips_ceq_b:
1174 case Intrinsic::mips_ceq_h:
1175 case Intrinsic::mips_ceq_w:
1176 case Intrinsic::mips_ceq_d:
1177 return DAG.getSetCC(DL, Op->getValueType(0), Op->getOperand(1),
1178 Op->getOperand(2), ISD::SETEQ);
1179 case Intrinsic::mips_ceqi_b:
1180 case Intrinsic::mips_ceqi_h:
1181 case Intrinsic::mips_ceqi_w:
1182 case Intrinsic::mips_ceqi_d:
1183 return DAG.getSetCC(DL, Op->getValueType(0), Op->getOperand(1),
1184 lowerMSASplatImm(Op, 2, DAG), ISD::SETEQ);
1185 case Intrinsic::mips_cle_s_b:
1186 case Intrinsic::mips_cle_s_h:
1187 case Intrinsic::mips_cle_s_w:
1188 case Intrinsic::mips_cle_s_d:
1189 return DAG.getSetCC(DL, Op->getValueType(0), Op->getOperand(1),
1190 Op->getOperand(2), ISD::SETLE);
1191 case Intrinsic::mips_clei_s_b:
1192 case Intrinsic::mips_clei_s_h:
1193 case Intrinsic::mips_clei_s_w:
1194 case Intrinsic::mips_clei_s_d:
1195 return DAG.getSetCC(DL, Op->getValueType(0), Op->getOperand(1),
1196 lowerMSASplatImm(Op, 2, DAG), ISD::SETLE);
1197 case Intrinsic::mips_cle_u_b:
1198 case Intrinsic::mips_cle_u_h:
1199 case Intrinsic::mips_cle_u_w:
1200 case Intrinsic::mips_cle_u_d:
1201 return DAG.getSetCC(DL, Op->getValueType(0), Op->getOperand(1),
1202 Op->getOperand(2), ISD::SETULE);
1203 case Intrinsic::mips_clei_u_b:
1204 case Intrinsic::mips_clei_u_h:
1205 case Intrinsic::mips_clei_u_w:
1206 case Intrinsic::mips_clei_u_d:
1207 return DAG.getSetCC(DL, Op->getValueType(0), Op->getOperand(1),
1208 lowerMSASplatImm(Op, 2, DAG), ISD::SETULE);
1209 case Intrinsic::mips_clt_s_b:
1210 case Intrinsic::mips_clt_s_h:
1211 case Intrinsic::mips_clt_s_w:
1212 case Intrinsic::mips_clt_s_d:
1213 return DAG.getSetCC(DL, Op->getValueType(0), Op->getOperand(1),
1214 Op->getOperand(2), ISD::SETLT);
1215 case Intrinsic::mips_clti_s_b:
1216 case Intrinsic::mips_clti_s_h:
1217 case Intrinsic::mips_clti_s_w:
1218 case Intrinsic::mips_clti_s_d:
1219 return DAG.getSetCC(DL, Op->getValueType(0), Op->getOperand(1),
1220 lowerMSASplatImm(Op, 2, DAG), ISD::SETLT);
1221 case Intrinsic::mips_clt_u_b:
1222 case Intrinsic::mips_clt_u_h:
1223 case Intrinsic::mips_clt_u_w:
1224 case Intrinsic::mips_clt_u_d:
1225 return DAG.getSetCC(DL, Op->getValueType(0), Op->getOperand(1),
1226 Op->getOperand(2), ISD::SETULT);
1227 case Intrinsic::mips_clti_u_b:
1228 case Intrinsic::mips_clti_u_h:
1229 case Intrinsic::mips_clti_u_w:
1230 case Intrinsic::mips_clti_u_d:
1231 return DAG.getSetCC(DL, Op->getValueType(0), Op->getOperand(1),
1232 lowerMSASplatImm(Op, 2, DAG), ISD::SETULT);
1233 case Intrinsic::mips_copy_s_b:
1234 case Intrinsic::mips_copy_s_h:
1235 case Intrinsic::mips_copy_s_w:
1236 return lowerMSACopyIntr(Op, DAG, MipsISD::VEXTRACT_SEXT_ELT);
1237 case Intrinsic::mips_copy_s_d:
1238 // Don't lower directly into VEXTRACT_SEXT_ELT since i64 might be illegal.
1239 // Instead lower to the generic EXTRACT_VECTOR_ELT node and let the type
1240 // legalizer and EXTRACT_VECTOR_ELT lowering sort it out.
1241 return DAG.getNode(ISD::EXTRACT_VECTOR_ELT, SDLoc(Op), Op->getValueType(0),
1242 Op->getOperand(1), Op->getOperand(2));
1243 case Intrinsic::mips_copy_u_b:
1244 case Intrinsic::mips_copy_u_h:
1245 case Intrinsic::mips_copy_u_w:
1246 return lowerMSACopyIntr(Op, DAG, MipsISD::VEXTRACT_ZEXT_ELT);
1247 case Intrinsic::mips_copy_u_d:
1248 // Don't lower directly into VEXTRACT_ZEXT_ELT since i64 might be illegal.
1249 // Instead lower to the generic EXTRACT_VECTOR_ELT node and let the type
1250 // legalizer and EXTRACT_VECTOR_ELT lowering sort it out.
1252 // Note: When i64 is illegal, this results in copy_s.w instructions instead
1253 // of copy_u.w instructions. This makes no difference to the behaviour
1254 // since i64 is only illegal when the register file is 32-bit.
1255 return DAG.getNode(ISD::EXTRACT_VECTOR_ELT, SDLoc(Op), Op->getValueType(0),
1256 Op->getOperand(1), Op->getOperand(2));
1257 case Intrinsic::mips_div_s_b:
1258 case Intrinsic::mips_div_s_h:
1259 case Intrinsic::mips_div_s_w:
1260 case Intrinsic::mips_div_s_d:
1261 return DAG.getNode(ISD::SDIV, DL, Op->getValueType(0), Op->getOperand(1),
1263 case Intrinsic::mips_div_u_b:
1264 case Intrinsic::mips_div_u_h:
1265 case Intrinsic::mips_div_u_w:
1266 case Intrinsic::mips_div_u_d:
1267 return DAG.getNode(ISD::UDIV, DL, Op->getValueType(0), Op->getOperand(1),
1269 case Intrinsic::mips_fadd_w:
1270 case Intrinsic::mips_fadd_d:
1271 return DAG.getNode(ISD::FADD, DL, Op->getValueType(0), Op->getOperand(1),
1273 // Don't lower mips_fcaf_[wd] since LLVM folds SETFALSE condcodes away
1274 case Intrinsic::mips_fceq_w:
1275 case Intrinsic::mips_fceq_d:
1276 return DAG.getSetCC(DL, Op->getValueType(0), Op->getOperand(1),
1277 Op->getOperand(2), ISD::SETOEQ);
1278 case Intrinsic::mips_fcle_w:
1279 case Intrinsic::mips_fcle_d:
1280 return DAG.getSetCC(DL, Op->getValueType(0), Op->getOperand(1),
1281 Op->getOperand(2), ISD::SETOLE);
1282 case Intrinsic::mips_fclt_w:
1283 case Intrinsic::mips_fclt_d:
1284 return DAG.getSetCC(DL, Op->getValueType(0), Op->getOperand(1),
1285 Op->getOperand(2), ISD::SETOLT);
1286 case Intrinsic::mips_fcne_w:
1287 case Intrinsic::mips_fcne_d:
1288 return DAG.getSetCC(DL, Op->getValueType(0), Op->getOperand(1),
1289 Op->getOperand(2), ISD::SETONE);
1290 case Intrinsic::mips_fcor_w:
1291 case Intrinsic::mips_fcor_d:
1292 return DAG.getSetCC(DL, Op->getValueType(0), Op->getOperand(1),
1293 Op->getOperand(2), ISD::SETO);
1294 case Intrinsic::mips_fcueq_w:
1295 case Intrinsic::mips_fcueq_d:
1296 return DAG.getSetCC(DL, Op->getValueType(0), Op->getOperand(1),
1297 Op->getOperand(2), ISD::SETUEQ);
1298 case Intrinsic::mips_fcule_w:
1299 case Intrinsic::mips_fcule_d:
1300 return DAG.getSetCC(DL, Op->getValueType(0), Op->getOperand(1),
1301 Op->getOperand(2), ISD::SETULE);
1302 case Intrinsic::mips_fcult_w:
1303 case Intrinsic::mips_fcult_d:
1304 return DAG.getSetCC(DL, Op->getValueType(0), Op->getOperand(1),
1305 Op->getOperand(2), ISD::SETULT);
1306 case Intrinsic::mips_fcun_w:
1307 case Intrinsic::mips_fcun_d:
1308 return DAG.getSetCC(DL, Op->getValueType(0), Op->getOperand(1),
1309 Op->getOperand(2), ISD::SETUO);
1310 case Intrinsic::mips_fcune_w:
1311 case Intrinsic::mips_fcune_d:
1312 return DAG.getSetCC(DL, Op->getValueType(0), Op->getOperand(1),
1313 Op->getOperand(2), ISD::SETUNE);
1314 case Intrinsic::mips_fdiv_w:
1315 case Intrinsic::mips_fdiv_d:
1316 return DAG.getNode(ISD::FDIV, DL, Op->getValueType(0), Op->getOperand(1),
1318 case Intrinsic::mips_ffint_u_w:
1319 case Intrinsic::mips_ffint_u_d:
1320 return DAG.getNode(ISD::UINT_TO_FP, DL, Op->getValueType(0),
1322 case Intrinsic::mips_ffint_s_w:
1323 case Intrinsic::mips_ffint_s_d:
1324 return DAG.getNode(ISD::SINT_TO_FP, DL, Op->getValueType(0),
1326 case Intrinsic::mips_fill_b:
1327 case Intrinsic::mips_fill_h:
1328 case Intrinsic::mips_fill_w:
1329 case Intrinsic::mips_fill_d: {
1330 SmallVector<SDValue, 16> Ops;
1331 EVT ResTy = Op->getValueType(0);
1333 for (unsigned i = 0; i < ResTy.getVectorNumElements(); ++i)
1334 Ops.push_back(Op->getOperand(1));
1336 // If ResTy is v2i64 then the type legalizer will break this node down into
1337 // an equivalent v4i32.
1338 return DAG.getNode(ISD::BUILD_VECTOR, DL, ResTy, &Ops[0], Ops.size());
1340 case Intrinsic::mips_fexp2_w:
1341 case Intrinsic::mips_fexp2_d: {
1342 EVT ResTy = Op->getValueType(0);
1344 ISD::FMUL, SDLoc(Op), ResTy, Op->getOperand(1),
1345 DAG.getNode(ISD::FEXP2, SDLoc(Op), ResTy, Op->getOperand(2)));
1347 case Intrinsic::mips_flog2_w:
1348 case Intrinsic::mips_flog2_d:
1349 return DAG.getNode(ISD::FLOG2, DL, Op->getValueType(0), Op->getOperand(1));
1350 case Intrinsic::mips_fmadd_w:
1351 case Intrinsic::mips_fmadd_d:
1352 return DAG.getNode(ISD::FMA, SDLoc(Op), Op->getValueType(0),
1353 Op->getOperand(1), Op->getOperand(2), Op->getOperand(3));
1354 case Intrinsic::mips_fmul_w:
1355 case Intrinsic::mips_fmul_d:
1356 return DAG.getNode(ISD::FMUL, DL, Op->getValueType(0), Op->getOperand(1),
1358 case Intrinsic::mips_fmsub_w:
1359 case Intrinsic::mips_fmsub_d: {
1360 EVT ResTy = Op->getValueType(0);
1361 return DAG.getNode(ISD::FSUB, SDLoc(Op), ResTy, Op->getOperand(1),
1362 DAG.getNode(ISD::FMUL, SDLoc(Op), ResTy,
1363 Op->getOperand(2), Op->getOperand(3)));
1365 case Intrinsic::mips_frint_w:
1366 case Intrinsic::mips_frint_d:
1367 return DAG.getNode(ISD::FRINT, DL, Op->getValueType(0), Op->getOperand(1));
1368 case Intrinsic::mips_fsqrt_w:
1369 case Intrinsic::mips_fsqrt_d:
1370 return DAG.getNode(ISD::FSQRT, DL, Op->getValueType(0), Op->getOperand(1));
1371 case Intrinsic::mips_fsub_w:
1372 case Intrinsic::mips_fsub_d:
1373 return DAG.getNode(ISD::FSUB, DL, Op->getValueType(0), Op->getOperand(1),
1375 case Intrinsic::mips_ftrunc_u_w:
1376 case Intrinsic::mips_ftrunc_u_d:
1377 return DAG.getNode(ISD::FP_TO_UINT, DL, Op->getValueType(0),
1379 case Intrinsic::mips_ftrunc_s_w:
1380 case Intrinsic::mips_ftrunc_s_d:
1381 return DAG.getNode(ISD::FP_TO_SINT, DL, Op->getValueType(0),
1383 case Intrinsic::mips_ilvev_b:
1384 case Intrinsic::mips_ilvev_h:
1385 case Intrinsic::mips_ilvev_w:
1386 case Intrinsic::mips_ilvev_d:
1387 return DAG.getNode(MipsISD::ILVEV, DL, Op->getValueType(0),
1388 Op->getOperand(1), Op->getOperand(2));
1389 case Intrinsic::mips_ilvl_b:
1390 case Intrinsic::mips_ilvl_h:
1391 case Intrinsic::mips_ilvl_w:
1392 case Intrinsic::mips_ilvl_d:
1393 return DAG.getNode(MipsISD::ILVL, DL, Op->getValueType(0),
1394 Op->getOperand(1), Op->getOperand(2));
1395 case Intrinsic::mips_ilvod_b:
1396 case Intrinsic::mips_ilvod_h:
1397 case Intrinsic::mips_ilvod_w:
1398 case Intrinsic::mips_ilvod_d:
1399 return DAG.getNode(MipsISD::ILVOD, DL, Op->getValueType(0),
1400 Op->getOperand(1), Op->getOperand(2));
1401 case Intrinsic::mips_ilvr_b:
1402 case Intrinsic::mips_ilvr_h:
1403 case Intrinsic::mips_ilvr_w:
1404 case Intrinsic::mips_ilvr_d:
1405 return DAG.getNode(MipsISD::ILVR, DL, Op->getValueType(0),
1406 Op->getOperand(1), Op->getOperand(2));
1407 case Intrinsic::mips_insert_b:
1408 case Intrinsic::mips_insert_h:
1409 case Intrinsic::mips_insert_w:
1410 case Intrinsic::mips_insert_d:
1411 return DAG.getNode(ISD::INSERT_VECTOR_ELT, SDLoc(Op), Op->getValueType(0),
1412 Op->getOperand(1), Op->getOperand(3), Op->getOperand(2));
1413 case Intrinsic::mips_ldi_b:
1414 case Intrinsic::mips_ldi_h:
1415 case Intrinsic::mips_ldi_w:
1416 case Intrinsic::mips_ldi_d:
1417 return lowerMSASplatImm(Op, 1, DAG);
1418 case Intrinsic::mips_lsa: {
1419 EVT ResTy = Op->getValueType(0);
1420 return DAG.getNode(ISD::ADD, SDLoc(Op), ResTy, Op->getOperand(1),
1421 DAG.getNode(ISD::SHL, SDLoc(Op), ResTy,
1422 Op->getOperand(2), Op->getOperand(3)));
1424 case Intrinsic::mips_maddv_b:
1425 case Intrinsic::mips_maddv_h:
1426 case Intrinsic::mips_maddv_w:
1427 case Intrinsic::mips_maddv_d: {
1428 EVT ResTy = Op->getValueType(0);
1429 return DAG.getNode(ISD::ADD, SDLoc(Op), ResTy, Op->getOperand(1),
1430 DAG.getNode(ISD::MUL, SDLoc(Op), ResTy,
1431 Op->getOperand(2), Op->getOperand(3)));
1433 case Intrinsic::mips_max_s_b:
1434 case Intrinsic::mips_max_s_h:
1435 case Intrinsic::mips_max_s_w:
1436 case Intrinsic::mips_max_s_d:
1437 return DAG.getNode(MipsISD::VSMAX, DL, Op->getValueType(0),
1438 Op->getOperand(1), Op->getOperand(2));
1439 case Intrinsic::mips_max_u_b:
1440 case Intrinsic::mips_max_u_h:
1441 case Intrinsic::mips_max_u_w:
1442 case Intrinsic::mips_max_u_d:
1443 return DAG.getNode(MipsISD::VUMAX, DL, Op->getValueType(0),
1444 Op->getOperand(1), Op->getOperand(2));
1445 case Intrinsic::mips_maxi_s_b:
1446 case Intrinsic::mips_maxi_s_h:
1447 case Intrinsic::mips_maxi_s_w:
1448 case Intrinsic::mips_maxi_s_d:
1449 return DAG.getNode(MipsISD::VSMAX, DL, Op->getValueType(0),
1450 Op->getOperand(1), lowerMSASplatImm(Op, 2, DAG));
1451 case Intrinsic::mips_maxi_u_b:
1452 case Intrinsic::mips_maxi_u_h:
1453 case Intrinsic::mips_maxi_u_w:
1454 case Intrinsic::mips_maxi_u_d:
1455 return DAG.getNode(MipsISD::VUMAX, DL, Op->getValueType(0),
1456 Op->getOperand(1), lowerMSASplatImm(Op, 2, DAG));
1457 case Intrinsic::mips_min_s_b:
1458 case Intrinsic::mips_min_s_h:
1459 case Intrinsic::mips_min_s_w:
1460 case Intrinsic::mips_min_s_d:
1461 return DAG.getNode(MipsISD::VSMIN, DL, Op->getValueType(0),
1462 Op->getOperand(1), Op->getOperand(2));
1463 case Intrinsic::mips_min_u_b:
1464 case Intrinsic::mips_min_u_h:
1465 case Intrinsic::mips_min_u_w:
1466 case Intrinsic::mips_min_u_d:
1467 return DAG.getNode(MipsISD::VUMIN, DL, Op->getValueType(0),
1468 Op->getOperand(1), Op->getOperand(2));
1469 case Intrinsic::mips_mini_s_b:
1470 case Intrinsic::mips_mini_s_h:
1471 case Intrinsic::mips_mini_s_w:
1472 case Intrinsic::mips_mini_s_d:
1473 return DAG.getNode(MipsISD::VSMIN, DL, Op->getValueType(0),
1474 Op->getOperand(1), lowerMSASplatImm(Op, 2, DAG));
1475 case Intrinsic::mips_mini_u_b:
1476 case Intrinsic::mips_mini_u_h:
1477 case Intrinsic::mips_mini_u_w:
1478 case Intrinsic::mips_mini_u_d:
1479 return DAG.getNode(MipsISD::VUMIN, DL, Op->getValueType(0),
1480 Op->getOperand(1), lowerMSASplatImm(Op, 2, DAG));
1481 case Intrinsic::mips_mod_s_b:
1482 case Intrinsic::mips_mod_s_h:
1483 case Intrinsic::mips_mod_s_w:
1484 case Intrinsic::mips_mod_s_d:
1485 return DAG.getNode(ISD::SREM, DL, Op->getValueType(0), Op->getOperand(1),
1487 case Intrinsic::mips_mod_u_b:
1488 case Intrinsic::mips_mod_u_h:
1489 case Intrinsic::mips_mod_u_w:
1490 case Intrinsic::mips_mod_u_d:
1491 return DAG.getNode(ISD::UREM, DL, Op->getValueType(0), Op->getOperand(1),
1493 case Intrinsic::mips_mulv_b:
1494 case Intrinsic::mips_mulv_h:
1495 case Intrinsic::mips_mulv_w:
1496 case Intrinsic::mips_mulv_d:
1497 return DAG.getNode(ISD::MUL, DL, Op->getValueType(0), Op->getOperand(1),
1499 case Intrinsic::mips_msubv_b:
1500 case Intrinsic::mips_msubv_h:
1501 case Intrinsic::mips_msubv_w:
1502 case Intrinsic::mips_msubv_d: {
1503 EVT ResTy = Op->getValueType(0);
1504 return DAG.getNode(ISD::SUB, SDLoc(Op), ResTy, Op->getOperand(1),
1505 DAG.getNode(ISD::MUL, SDLoc(Op), ResTy,
1506 Op->getOperand(2), Op->getOperand(3)));
1508 case Intrinsic::mips_nlzc_b:
1509 case Intrinsic::mips_nlzc_h:
1510 case Intrinsic::mips_nlzc_w:
1511 case Intrinsic::mips_nlzc_d:
1512 return DAG.getNode(ISD::CTLZ, DL, Op->getValueType(0), Op->getOperand(1));
1513 case Intrinsic::mips_nor_v: {
1514 SDValue Res = DAG.getNode(ISD::OR, DL, Op->getValueType(0),
1515 Op->getOperand(1), Op->getOperand(2));
1516 return DAG.getNOT(DL, Res, Res->getValueType(0));
1518 case Intrinsic::mips_nori_b: {
1519 SDValue Res = DAG.getNode(ISD::OR, DL, Op->getValueType(0),
1521 lowerMSASplatImm(Op, 2, DAG));
1522 return DAG.getNOT(DL, Res, Res->getValueType(0));
1524 case Intrinsic::mips_or_v:
1525 return DAG.getNode(ISD::OR, DL, Op->getValueType(0), Op->getOperand(1),
1527 case Intrinsic::mips_ori_b:
1528 return DAG.getNode(ISD::OR, DL, Op->getValueType(0),
1529 Op->getOperand(1), lowerMSASplatImm(Op, 2, DAG));
1530 case Intrinsic::mips_pckev_b:
1531 case Intrinsic::mips_pckev_h:
1532 case Intrinsic::mips_pckev_w:
1533 case Intrinsic::mips_pckev_d:
1534 return DAG.getNode(MipsISD::PCKEV, DL, Op->getValueType(0),
1535 Op->getOperand(1), Op->getOperand(2));
1536 case Intrinsic::mips_pckod_b:
1537 case Intrinsic::mips_pckod_h:
1538 case Intrinsic::mips_pckod_w:
1539 case Intrinsic::mips_pckod_d:
1540 return DAG.getNode(MipsISD::PCKOD, DL, Op->getValueType(0),
1541 Op->getOperand(1), Op->getOperand(2));
1542 case Intrinsic::mips_pcnt_b:
1543 case Intrinsic::mips_pcnt_h:
1544 case Intrinsic::mips_pcnt_w:
1545 case Intrinsic::mips_pcnt_d:
1546 return DAG.getNode(ISD::CTPOP, DL, Op->getValueType(0), Op->getOperand(1));
1547 case Intrinsic::mips_shf_b:
1548 case Intrinsic::mips_shf_h:
1549 case Intrinsic::mips_shf_w:
1550 return DAG.getNode(MipsISD::SHF, DL, Op->getValueType(0),
1551 Op->getOperand(2), Op->getOperand(1));
1552 case Intrinsic::mips_sll_b:
1553 case Intrinsic::mips_sll_h:
1554 case Intrinsic::mips_sll_w:
1555 case Intrinsic::mips_sll_d:
1556 return DAG.getNode(ISD::SHL, DL, Op->getValueType(0), Op->getOperand(1),
1558 case Intrinsic::mips_slli_b:
1559 case Intrinsic::mips_slli_h:
1560 case Intrinsic::mips_slli_w:
1561 case Intrinsic::mips_slli_d:
1562 return DAG.getNode(ISD::SHL, DL, Op->getValueType(0),
1563 Op->getOperand(1), lowerMSASplatImm(Op, 2, DAG));
1564 case Intrinsic::mips_splat_b:
1565 case Intrinsic::mips_splat_h:
1566 case Intrinsic::mips_splat_w:
1567 case Intrinsic::mips_splat_d:
1568 // We can't lower via VECTOR_SHUFFLE because it requires constant shuffle
1569 // masks, nor can we lower via BUILD_VECTOR & EXTRACT_VECTOR_ELT because
1570 // EXTRACT_VECTOR_ELT can't extract i64's on MIPS32.
1571 // Instead we lower to MipsISD::VSHF and match from there.
1572 return DAG.getNode(MipsISD::VSHF, DL, Op->getValueType(0),
1573 lowerMSASplatImm(Op, 2, DAG), Op->getOperand(1),
1575 case Intrinsic::mips_splati_b:
1576 case Intrinsic::mips_splati_h:
1577 case Intrinsic::mips_splati_w:
1578 case Intrinsic::mips_splati_d:
1579 return DAG.getNode(MipsISD::VSHF, DL, Op->getValueType(0),
1580 lowerMSASplatImm(Op, 2, DAG), Op->getOperand(1),
1582 case Intrinsic::mips_sra_b:
1583 case Intrinsic::mips_sra_h:
1584 case Intrinsic::mips_sra_w:
1585 case Intrinsic::mips_sra_d:
1586 return DAG.getNode(ISD::SRA, DL, Op->getValueType(0), Op->getOperand(1),
1588 case Intrinsic::mips_srai_b:
1589 case Intrinsic::mips_srai_h:
1590 case Intrinsic::mips_srai_w:
1591 case Intrinsic::mips_srai_d:
1592 return DAG.getNode(ISD::SRA, DL, Op->getValueType(0),
1593 Op->getOperand(1), lowerMSASplatImm(Op, 2, DAG));
1594 case Intrinsic::mips_srl_b:
1595 case Intrinsic::mips_srl_h:
1596 case Intrinsic::mips_srl_w:
1597 case Intrinsic::mips_srl_d:
1598 return DAG.getNode(ISD::SRL, DL, Op->getValueType(0), Op->getOperand(1),
1600 case Intrinsic::mips_srli_b:
1601 case Intrinsic::mips_srli_h:
1602 case Intrinsic::mips_srli_w:
1603 case Intrinsic::mips_srli_d:
1604 return DAG.getNode(ISD::SRL, DL, Op->getValueType(0),
1605 Op->getOperand(1), lowerMSASplatImm(Op, 2, DAG));
1606 case Intrinsic::mips_subv_b:
1607 case Intrinsic::mips_subv_h:
1608 case Intrinsic::mips_subv_w:
1609 case Intrinsic::mips_subv_d:
1610 return DAG.getNode(ISD::SUB, DL, Op->getValueType(0), Op->getOperand(1),
1612 case Intrinsic::mips_subvi_b:
1613 case Intrinsic::mips_subvi_h:
1614 case Intrinsic::mips_subvi_w:
1615 case Intrinsic::mips_subvi_d:
1616 return DAG.getNode(ISD::SUB, DL, Op->getValueType(0),
1617 Op->getOperand(1), lowerMSASplatImm(Op, 2, DAG));
1618 case Intrinsic::mips_vshf_b:
1619 case Intrinsic::mips_vshf_h:
1620 case Intrinsic::mips_vshf_w:
1621 case Intrinsic::mips_vshf_d:
1622 return DAG.getNode(MipsISD::VSHF, DL, Op->getValueType(0),
1623 Op->getOperand(1), Op->getOperand(2), Op->getOperand(3));
1624 case Intrinsic::mips_xor_v:
1625 return DAG.getNode(ISD::XOR, DL, Op->getValueType(0), Op->getOperand(1),
1627 case Intrinsic::mips_xori_b:
1628 return DAG.getNode(ISD::XOR, DL, Op->getValueType(0),
1629 Op->getOperand(1), lowerMSASplatImm(Op, 2, DAG));
1633 static SDValue lowerMSALoadIntr(SDValue Op, SelectionDAG &DAG, unsigned Intr) {
1635 SDValue ChainIn = Op->getOperand(0);
1636 SDValue Address = Op->getOperand(2);
1637 SDValue Offset = Op->getOperand(3);
1638 EVT ResTy = Op->getValueType(0);
1639 EVT PtrTy = Address->getValueType(0);
1641 Address = DAG.getNode(ISD::ADD, DL, PtrTy, Address, Offset);
1643 return DAG.getLoad(ResTy, DL, ChainIn, Address, MachinePointerInfo(), false,
1647 SDValue MipsSETargetLowering::lowerINTRINSIC_W_CHAIN(SDValue Op,
1648 SelectionDAG &DAG) const {
1649 unsigned Intr = cast<ConstantSDNode>(Op->getOperand(1))->getZExtValue();
1653 case Intrinsic::mips_extp:
1654 return lowerDSPIntr(Op, DAG, MipsISD::EXTP);
1655 case Intrinsic::mips_extpdp:
1656 return lowerDSPIntr(Op, DAG, MipsISD::EXTPDP);
1657 case Intrinsic::mips_extr_w:
1658 return lowerDSPIntr(Op, DAG, MipsISD::EXTR_W);
1659 case Intrinsic::mips_extr_r_w:
1660 return lowerDSPIntr(Op, DAG, MipsISD::EXTR_R_W);
1661 case Intrinsic::mips_extr_rs_w:
1662 return lowerDSPIntr(Op, DAG, MipsISD::EXTR_RS_W);
1663 case Intrinsic::mips_extr_s_h:
1664 return lowerDSPIntr(Op, DAG, MipsISD::EXTR_S_H);
1665 case Intrinsic::mips_mthlip:
1666 return lowerDSPIntr(Op, DAG, MipsISD::MTHLIP);
1667 case Intrinsic::mips_mulsaq_s_w_ph:
1668 return lowerDSPIntr(Op, DAG, MipsISD::MULSAQ_S_W_PH);
1669 case Intrinsic::mips_maq_s_w_phl:
1670 return lowerDSPIntr(Op, DAG, MipsISD::MAQ_S_W_PHL);
1671 case Intrinsic::mips_maq_s_w_phr:
1672 return lowerDSPIntr(Op, DAG, MipsISD::MAQ_S_W_PHR);
1673 case Intrinsic::mips_maq_sa_w_phl:
1674 return lowerDSPIntr(Op, DAG, MipsISD::MAQ_SA_W_PHL);
1675 case Intrinsic::mips_maq_sa_w_phr:
1676 return lowerDSPIntr(Op, DAG, MipsISD::MAQ_SA_W_PHR);
1677 case Intrinsic::mips_dpaq_s_w_ph:
1678 return lowerDSPIntr(Op, DAG, MipsISD::DPAQ_S_W_PH);
1679 case Intrinsic::mips_dpsq_s_w_ph:
1680 return lowerDSPIntr(Op, DAG, MipsISD::DPSQ_S_W_PH);
1681 case Intrinsic::mips_dpaq_sa_l_w:
1682 return lowerDSPIntr(Op, DAG, MipsISD::DPAQ_SA_L_W);
1683 case Intrinsic::mips_dpsq_sa_l_w:
1684 return lowerDSPIntr(Op, DAG, MipsISD::DPSQ_SA_L_W);
1685 case Intrinsic::mips_dpaqx_s_w_ph:
1686 return lowerDSPIntr(Op, DAG, MipsISD::DPAQX_S_W_PH);
1687 case Intrinsic::mips_dpaqx_sa_w_ph:
1688 return lowerDSPIntr(Op, DAG, MipsISD::DPAQX_SA_W_PH);
1689 case Intrinsic::mips_dpsqx_s_w_ph:
1690 return lowerDSPIntr(Op, DAG, MipsISD::DPSQX_S_W_PH);
1691 case Intrinsic::mips_dpsqx_sa_w_ph:
1692 return lowerDSPIntr(Op, DAG, MipsISD::DPSQX_SA_W_PH);
1693 case Intrinsic::mips_ld_b:
1694 case Intrinsic::mips_ld_h:
1695 case Intrinsic::mips_ld_w:
1696 case Intrinsic::mips_ld_d:
1697 return lowerMSALoadIntr(Op, DAG, Intr);
1701 static SDValue lowerMSAStoreIntr(SDValue Op, SelectionDAG &DAG, unsigned Intr) {
1703 SDValue ChainIn = Op->getOperand(0);
1704 SDValue Value = Op->getOperand(2);
1705 SDValue Address = Op->getOperand(3);
1706 SDValue Offset = Op->getOperand(4);
1707 EVT PtrTy = Address->getValueType(0);
1709 Address = DAG.getNode(ISD::ADD, DL, PtrTy, Address, Offset);
1711 return DAG.getStore(ChainIn, DL, Value, Address, MachinePointerInfo(), false,
1715 SDValue MipsSETargetLowering::lowerINTRINSIC_VOID(SDValue Op,
1716 SelectionDAG &DAG) const {
1717 unsigned Intr = cast<ConstantSDNode>(Op->getOperand(1))->getZExtValue();
1721 case Intrinsic::mips_st_b:
1722 case Intrinsic::mips_st_h:
1723 case Intrinsic::mips_st_w:
1724 case Intrinsic::mips_st_d:
1725 return lowerMSAStoreIntr(Op, DAG, Intr);
1729 /// \brief Check if the given BuildVectorSDNode is a splat.
1730 /// This method currently relies on DAG nodes being reused when equivalent,
1731 /// so it's possible for this to return false even when isConstantSplat returns
1733 static bool isSplatVector(const BuildVectorSDNode *N) {
1734 unsigned int nOps = N->getNumOperands();
1735 assert(nOps > 1 && "isSplat has 0 or 1 sized build vector");
1737 SDValue Operand0 = N->getOperand(0);
1739 for (unsigned int i = 1; i < nOps; ++i) {
1740 if (N->getOperand(i) != Operand0)
1747 // Lower ISD::EXTRACT_VECTOR_ELT into MipsISD::VEXTRACT_SEXT_ELT.
1749 // The non-value bits resulting from ISD::EXTRACT_VECTOR_ELT are undefined. We
1750 // choose to sign-extend but we could have equally chosen zero-extend. The
1751 // DAGCombiner will fold any sign/zero extension of the ISD::EXTRACT_VECTOR_ELT
1752 // result into this node later (possibly changing it to a zero-extend in the
1754 SDValue MipsSETargetLowering::
1755 lowerEXTRACT_VECTOR_ELT(SDValue Op, SelectionDAG &DAG) const {
1757 EVT ResTy = Op->getValueType(0);
1758 SDValue Op0 = Op->getOperand(0);
1759 EVT VecTy = Op0->getValueType(0);
1761 if (!VecTy.is128BitVector())
1764 if (ResTy.isInteger()) {
1765 SDValue Op1 = Op->getOperand(1);
1766 EVT EltTy = VecTy.getVectorElementType();
1767 return DAG.getNode(MipsISD::VEXTRACT_SEXT_ELT, DL, ResTy, Op0, Op1,
1768 DAG.getValueType(EltTy));
1774 static bool isConstantOrUndef(const SDValue Op) {
1775 if (Op->getOpcode() == ISD::UNDEF)
1777 if (dyn_cast<ConstantSDNode>(Op))
1779 if (dyn_cast<ConstantFPSDNode>(Op))
1784 static bool isConstantOrUndefBUILD_VECTOR(const BuildVectorSDNode *Op) {
1785 for (unsigned i = 0; i < Op->getNumOperands(); ++i)
1786 if (isConstantOrUndef(Op->getOperand(i)))
1791 // Lowers ISD::BUILD_VECTOR into appropriate SelectionDAG nodes for the
1794 // Lowers according to the following rules:
1795 // - Constant splats are legal as-is as long as the SplatBitSize is a power of
1796 // 2 less than or equal to 64 and the value fits into a signed 10-bit
1798 // - Constant splats are lowered to bitconverted BUILD_VECTORs if SplatBitSize
1799 // is a power of 2 less than or equal to 64 and the value does not fit into a
1800 // signed 10-bit immediate
1801 // - Non-constant splats are legal as-is.
1802 // - Non-constant non-splats are lowered to sequences of INSERT_VECTOR_ELT.
1803 // - All others are illegal and must be expanded.
1804 SDValue MipsSETargetLowering::lowerBUILD_VECTOR(SDValue Op,
1805 SelectionDAG &DAG) const {
1806 BuildVectorSDNode *Node = cast<BuildVectorSDNode>(Op);
1807 EVT ResTy = Op->getValueType(0);
1809 APInt SplatValue, SplatUndef;
1810 unsigned SplatBitSize;
1813 if (!Subtarget->hasMSA() || !ResTy.is128BitVector())
1816 if (Node->isConstantSplat(SplatValue, SplatUndef, SplatBitSize,
1818 !Subtarget->isLittle()) && SplatBitSize <= 64) {
1819 // We can only cope with 8, 16, 32, or 64-bit elements
1820 if (SplatBitSize != 8 && SplatBitSize != 16 && SplatBitSize != 32 &&
1824 // If the value fits into a simm10 then we can use ldi.[bhwd]
1825 if (SplatValue.isSignedIntN(10))
1830 switch (SplatBitSize) {
1834 ViaVecTy = MVT::v16i8;
1837 ViaVecTy = MVT::v8i16;
1840 ViaVecTy = MVT::v4i32;
1843 // There's no fill.d to fall back on for 64-bit values
1847 SmallVector<SDValue, 16> Ops;
1848 SDValue Constant = DAG.getConstant(SplatValue.sextOrSelf(32), MVT::i32);
1850 for (unsigned i = 0; i < ViaVecTy.getVectorNumElements(); ++i)
1851 Ops.push_back(Constant);
1853 SDValue Result = DAG.getNode(ISD::BUILD_VECTOR, SDLoc(Node), ViaVecTy,
1854 &Ops[0], Ops.size());
1856 if (ViaVecTy != ResTy)
1857 Result = DAG.getNode(ISD::BITCAST, SDLoc(Node), ResTy, Result);
1860 } else if (isSplatVector(Node))
1862 else if (!isConstantOrUndefBUILD_VECTOR(Node)) {
1863 // Use INSERT_VECTOR_ELT operations rather than expand to stores.
1864 // The resulting code is the same length as the expansion, but it doesn't
1865 // use memory operations
1866 EVT ResTy = Node->getValueType(0);
1868 assert(ResTy.isVector());
1870 unsigned NumElts = ResTy.getVectorNumElements();
1871 SDValue Vector = DAG.getUNDEF(ResTy);
1872 for (unsigned i = 0; i < NumElts; ++i) {
1873 Vector = DAG.getNode(ISD::INSERT_VECTOR_ELT, DL, ResTy, Vector,
1874 Node->getOperand(i),
1875 DAG.getConstant(i, MVT::i32));
1883 // Lower VECTOR_SHUFFLE into SHF (if possible).
1885 // SHF splits the vector into blocks of four elements, then shuffles these
1886 // elements according to a <4 x i2> constant (encoded as an integer immediate).
1888 // It is therefore possible to lower into SHF when the mask takes the form:
1889 // <a, b, c, d, a+4, b+4, c+4, d+4, a+8, b+8, c+8, d+8, ...>
1890 // When undef's appear they are treated as if they were whatever value is
1891 // necessary in order to fit the above form.
1894 // %2 = shufflevector <8 x i16> %0, <8 x i16> undef,
1895 // <8 x i32> <i32 3, i32 2, i32 1, i32 0,
1896 // i32 7, i32 6, i32 5, i32 4>
1898 // (SHF_H $w0, $w1, 27)
1899 // where the 27 comes from:
1900 // 3 + (2 << 2) + (1 << 4) + (0 << 6)
1901 static SDValue lowerVECTOR_SHUFFLE_SHF(SDValue Op, EVT ResTy,
1902 SmallVector<int, 16> Indices,
1903 SelectionDAG &DAG) {
1904 int SHFIndices[4] = { -1, -1, -1, -1 };
1906 if (Indices.size() < 4)
1909 for (unsigned i = 0; i < 4; ++i) {
1910 for (unsigned j = i; j < Indices.size(); j += 4) {
1911 int Idx = Indices[j];
1913 // Convert from vector index to 4-element subvector index
1914 // If an index refers to an element outside of the subvector then give up
1917 if (Idx < 0 || Idx >= 4)
1921 // If the mask has an undef, replace it with the current index.
1922 // Note that it might still be undef if the current index is also undef
1923 if (SHFIndices[i] == -1)
1924 SHFIndices[i] = Idx;
1926 // Check that non-undef values are the same as in the mask. If they
1927 // aren't then give up
1928 if (!(Idx == -1 || Idx == SHFIndices[i]))
1933 // Calculate the immediate. Replace any remaining undefs with zero
1935 for (int i = 3; i >= 0; --i) {
1936 int Idx = SHFIndices[i];
1945 return DAG.getNode(MipsISD::SHF, SDLoc(Op), ResTy,
1946 DAG.getConstant(Imm, MVT::i32), Op->getOperand(0));
1949 // Lower VECTOR_SHUFFLE into ILVEV (if possible).
1951 // ILVEV interleaves the even elements from each vector.
1953 // It is possible to lower into ILVEV when the mask takes the form:
1954 // <0, n, 2, n+2, 4, n+4, ...>
1955 // where n is the number of elements in the vector.
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_ILVEV(SDValue Op, EVT ResTy,
1960 SmallVector<int, 16> Indices,
1961 SelectionDAG &DAG) {
1962 assert ((Indices.size() % 2) == 0);
1964 int WtIdx = ResTy.getVectorNumElements();
1966 for (unsigned i = 0; i < Indices.size(); i += 2) {
1967 if (Indices[i] != -1 && Indices[i] != WsIdx)
1969 if (Indices[i+1] != -1 && Indices[i+1] != WtIdx)
1975 return DAG.getNode(MipsISD::ILVEV, SDLoc(Op), ResTy, Op->getOperand(0),
1979 // Lower VECTOR_SHUFFLE into ILVOD (if possible).
1981 // ILVOD interleaves the odd elements from each vector.
1983 // It is possible to lower into ILVOD when the mask takes the form:
1984 // <1, n+1, 3, n+3, 5, n+5, ...>
1985 // where n is the number of elements in the vector.
1987 // When undef's appear in the mask they are treated as if they were whatever
1988 // value is necessary in order to fit the above form.
1989 static SDValue lowerVECTOR_SHUFFLE_ILVOD(SDValue Op, EVT ResTy,
1990 SmallVector<int, 16> Indices,
1991 SelectionDAG &DAG) {
1992 assert ((Indices.size() % 2) == 0);
1994 int WtIdx = ResTy.getVectorNumElements() + 1;
1996 for (unsigned i = 0; i < Indices.size(); i += 2) {
1997 if (Indices[i] != -1 && Indices[i] != WsIdx)
1999 if (Indices[i+1] != -1 && Indices[i+1] != WtIdx)
2005 return DAG.getNode(MipsISD::ILVOD, SDLoc(Op), ResTy, Op->getOperand(0),
2009 // Lower VECTOR_SHUFFLE into ILVL (if possible).
2011 // ILVL interleaves consecutive elements from the left half of each vector.
2013 // It is possible to lower into ILVL when the mask takes the form:
2014 // <0, n, 1, n+1, 2, n+2, ...>
2015 // where n is the number of elements in the vector.
2017 // When undef's appear in the mask they are treated as if they were whatever
2018 // value is necessary in order to fit the above form.
2019 static SDValue lowerVECTOR_SHUFFLE_ILVL(SDValue Op, EVT ResTy,
2020 SmallVector<int, 16> Indices,
2021 SelectionDAG &DAG) {
2022 assert ((Indices.size() % 2) == 0);
2024 int WtIdx = ResTy.getVectorNumElements();
2026 for (unsigned i = 0; i < Indices.size(); i += 2) {
2027 if (Indices[i] != -1 && Indices[i] != WsIdx)
2029 if (Indices[i+1] != -1 && Indices[i+1] != WtIdx)
2035 return DAG.getNode(MipsISD::ILVL, SDLoc(Op), ResTy, Op->getOperand(0),
2039 // Lower VECTOR_SHUFFLE into ILVR (if possible).
2041 // ILVR interleaves consecutive elements from the right half of each vector.
2043 // It is possible to lower into ILVR when the mask takes the form:
2044 // <x, n+x, x+1, n+x+1, x+2, n+x+2, ...>
2045 // where n is the number of elements in the vector and x is half n.
2047 // When undef's appear in the mask they are treated as if they were whatever
2048 // value is necessary in order to fit the above form.
2049 static SDValue lowerVECTOR_SHUFFLE_ILVR(SDValue Op, EVT ResTy,
2050 SmallVector<int, 16> Indices,
2051 SelectionDAG &DAG) {
2052 assert ((Indices.size() % 2) == 0);
2053 unsigned NumElts = ResTy.getVectorNumElements();
2054 int WsIdx = NumElts / 2;
2055 int WtIdx = NumElts + NumElts / 2;
2057 for (unsigned i = 0; i < Indices.size(); i += 2) {
2058 if (Indices[i] != -1 && Indices[i] != WsIdx)
2060 if (Indices[i+1] != -1 && Indices[i+1] != WtIdx)
2066 return DAG.getNode(MipsISD::ILVR, SDLoc(Op), ResTy, Op->getOperand(0),
2070 // Lower VECTOR_SHUFFLE into PCKEV (if possible).
2072 // PCKEV copies the even elements of each vector into the result vector.
2074 // It is possible to lower into PCKEV when the mask takes the form:
2075 // <0, 2, 4, ..., n, n+2, n+4, ...>
2076 // where n is the number of elements in the vector.
2078 // When undef's appear in the mask they are treated as if they were whatever
2079 // value is necessary in order to fit the above form.
2080 static SDValue lowerVECTOR_SHUFFLE_PCKEV(SDValue Op, EVT ResTy,
2081 SmallVector<int, 16> Indices,
2082 SelectionDAG &DAG) {
2083 assert ((Indices.size() % 2) == 0);
2086 for (unsigned i = 0; i < Indices.size(); ++i) {
2087 if (Indices[i] != -1 && Indices[i] != Idx)
2092 return DAG.getNode(MipsISD::PCKEV, SDLoc(Op), ResTy, Op->getOperand(0),
2096 // Lower VECTOR_SHUFFLE into PCKOD (if possible).
2098 // PCKOD copies the odd elements of each vector into the result vector.
2100 // It is possible to lower into PCKOD when the mask takes the form:
2101 // <1, 3, 5, ..., n+1, n+3, n+5, ...>
2102 // where n is the number of elements in the vector.
2104 // When undef's appear in the mask they are treated as if they were whatever
2105 // value is necessary in order to fit the above form.
2106 static SDValue lowerVECTOR_SHUFFLE_PCKOD(SDValue Op, EVT ResTy,
2107 SmallVector<int, 16> Indices,
2108 SelectionDAG &DAG) {
2109 assert ((Indices.size() % 2) == 0);
2112 for (unsigned i = 0; i < Indices.size(); ++i) {
2113 if (Indices[i] != -1 && Indices[i] != Idx)
2118 return DAG.getNode(MipsISD::PCKOD, SDLoc(Op), ResTy, Op->getOperand(0),
2122 // Lower VECTOR_SHUFFLE into VSHF.
2124 // This mostly consists of converting the shuffle indices in Indices into a
2125 // BUILD_VECTOR and adding it as an operand to the resulting VSHF. There is
2126 // also code to eliminate unused operands of the VECTOR_SHUFFLE. For example,
2127 // if the type is v8i16 and all the indices are less than 8 then the second
2128 // operand is unused and can be replaced with anything. We choose to replace it
2129 // with the used operand since this reduces the number of instructions overall.
2130 static SDValue lowerVECTOR_SHUFFLE_VSHF(SDValue Op, EVT ResTy,
2131 SmallVector<int, 16> Indices,
2132 SelectionDAG &DAG) {
2133 SmallVector<SDValue, 16> Ops;
2136 EVT MaskVecTy = ResTy.changeVectorElementTypeToInteger();
2137 EVT MaskEltTy = MaskVecTy.getVectorElementType();
2138 bool Using1stVec = false;
2139 bool Using2ndVec = false;
2141 int ResTyNumElts = ResTy.getVectorNumElements();
2143 for (int i = 0; i < ResTyNumElts; ++i) {
2144 // Idx == -1 means UNDEF
2145 int Idx = Indices[i];
2147 if (0 <= Idx && Idx < ResTyNumElts)
2149 if (ResTyNumElts <= Idx && Idx < ResTyNumElts * 2)
2153 for (SmallVector<int, 16>::iterator I = Indices.begin(); I != Indices.end();
2155 Ops.push_back(DAG.getTargetConstant(*I, MaskEltTy));
2157 SDValue MaskVec = DAG.getNode(ISD::BUILD_VECTOR, DL, MaskVecTy, &Ops[0],
2160 if (Using1stVec && Using2ndVec) {
2161 Op0 = Op->getOperand(0);
2162 Op1 = Op->getOperand(1);
2163 } else if (Using1stVec)
2164 Op0 = Op1 = Op->getOperand(0);
2165 else if (Using2ndVec)
2166 Op0 = Op1 = Op->getOperand(1);
2168 llvm_unreachable("shuffle vector mask references neither vector operand?");
2170 return DAG.getNode(MipsISD::VSHF, DL, ResTy, MaskVec, Op0, Op1);
2173 // Lower VECTOR_SHUFFLE into one of a number of instructions depending on the
2174 // indices in the shuffle.
2175 SDValue MipsSETargetLowering::lowerVECTOR_SHUFFLE(SDValue Op,
2176 SelectionDAG &DAG) const {
2177 ShuffleVectorSDNode *Node = cast<ShuffleVectorSDNode>(Op);
2178 EVT ResTy = Op->getValueType(0);
2180 if (!ResTy.is128BitVector())
2183 int ResTyNumElts = ResTy.getVectorNumElements();
2184 SmallVector<int, 16> Indices;
2186 for (int i = 0; i < ResTyNumElts; ++i)
2187 Indices.push_back(Node->getMaskElt(i));
2189 SDValue Result = lowerVECTOR_SHUFFLE_SHF(Op, ResTy, Indices, DAG);
2190 if (Result.getNode())
2192 Result = lowerVECTOR_SHUFFLE_ILVEV(Op, ResTy, Indices, DAG);
2193 if (Result.getNode())
2195 Result = lowerVECTOR_SHUFFLE_ILVOD(Op, ResTy, Indices, DAG);
2196 if (Result.getNode())
2198 Result = lowerVECTOR_SHUFFLE_ILVL(Op, ResTy, Indices, DAG);
2199 if (Result.getNode())
2201 Result = lowerVECTOR_SHUFFLE_ILVR(Op, ResTy, Indices, DAG);
2202 if (Result.getNode())
2204 Result = lowerVECTOR_SHUFFLE_PCKEV(Op, ResTy, Indices, DAG);
2205 if (Result.getNode())
2207 Result = lowerVECTOR_SHUFFLE_PCKOD(Op, ResTy, Indices, DAG);
2208 if (Result.getNode())
2210 return lowerVECTOR_SHUFFLE_VSHF(Op, ResTy, Indices, DAG);
2213 MachineBasicBlock * MipsSETargetLowering::
2214 emitBPOSGE32(MachineInstr *MI, MachineBasicBlock *BB) const{
2216 // bposge32_pseudo $vr0
2226 // $vr0 = phi($vr2, $fbb, $vr1, $tbb)
2228 MachineRegisterInfo &RegInfo = BB->getParent()->getRegInfo();
2229 const TargetInstrInfo *TII = getTargetMachine().getInstrInfo();
2230 const TargetRegisterClass *RC = &Mips::GPR32RegClass;
2231 DebugLoc DL = MI->getDebugLoc();
2232 const BasicBlock *LLVM_BB = BB->getBasicBlock();
2233 MachineFunction::iterator It = llvm::next(MachineFunction::iterator(BB));
2234 MachineFunction *F = BB->getParent();
2235 MachineBasicBlock *FBB = F->CreateMachineBasicBlock(LLVM_BB);
2236 MachineBasicBlock *TBB = F->CreateMachineBasicBlock(LLVM_BB);
2237 MachineBasicBlock *Sink = F->CreateMachineBasicBlock(LLVM_BB);
2240 F->insert(It, Sink);
2242 // Transfer the remainder of BB and its successor edges to Sink.
2243 Sink->splice(Sink->begin(), BB, llvm::next(MachineBasicBlock::iterator(MI)),
2245 Sink->transferSuccessorsAndUpdatePHIs(BB);
2248 BB->addSuccessor(FBB);
2249 BB->addSuccessor(TBB);
2250 FBB->addSuccessor(Sink);
2251 TBB->addSuccessor(Sink);
2253 // Insert the real bposge32 instruction to $BB.
2254 BuildMI(BB, DL, TII->get(Mips::BPOSGE32)).addMBB(TBB);
2257 unsigned VR2 = RegInfo.createVirtualRegister(RC);
2258 BuildMI(*FBB, FBB->end(), DL, TII->get(Mips::ADDiu), VR2)
2259 .addReg(Mips::ZERO).addImm(0);
2260 BuildMI(*FBB, FBB->end(), DL, TII->get(Mips::B)).addMBB(Sink);
2263 unsigned VR1 = RegInfo.createVirtualRegister(RC);
2264 BuildMI(*TBB, TBB->end(), DL, TII->get(Mips::ADDiu), VR1)
2265 .addReg(Mips::ZERO).addImm(1);
2267 // Insert phi function to $Sink.
2268 BuildMI(*Sink, Sink->begin(), DL, TII->get(Mips::PHI),
2269 MI->getOperand(0).getReg())
2270 .addReg(VR2).addMBB(FBB).addReg(VR1).addMBB(TBB);
2272 MI->eraseFromParent(); // The pseudo instruction is gone now.
2276 MachineBasicBlock * MipsSETargetLowering::
2277 emitMSACBranchPseudo(MachineInstr *MI, MachineBasicBlock *BB,
2278 unsigned BranchOp) const{
2280 // vany_nonzero $rd, $ws
2291 // $rd = phi($rd1, $fbb, $rd2, $tbb)
2293 MachineRegisterInfo &RegInfo = BB->getParent()->getRegInfo();
2294 const TargetInstrInfo *TII = getTargetMachine().getInstrInfo();
2295 const TargetRegisterClass *RC = &Mips::GPR32RegClass;
2296 DebugLoc DL = MI->getDebugLoc();
2297 const BasicBlock *LLVM_BB = BB->getBasicBlock();
2298 MachineFunction::iterator It = llvm::next(MachineFunction::iterator(BB));
2299 MachineFunction *F = BB->getParent();
2300 MachineBasicBlock *FBB = F->CreateMachineBasicBlock(LLVM_BB);
2301 MachineBasicBlock *TBB = F->CreateMachineBasicBlock(LLVM_BB);
2302 MachineBasicBlock *Sink = F->CreateMachineBasicBlock(LLVM_BB);
2305 F->insert(It, Sink);
2307 // Transfer the remainder of BB and its successor edges to Sink.
2308 Sink->splice(Sink->begin(), BB, llvm::next(MachineBasicBlock::iterator(MI)),
2310 Sink->transferSuccessorsAndUpdatePHIs(BB);
2313 BB->addSuccessor(FBB);
2314 BB->addSuccessor(TBB);
2315 FBB->addSuccessor(Sink);
2316 TBB->addSuccessor(Sink);
2318 // Insert the real bnz.b instruction to $BB.
2319 BuildMI(BB, DL, TII->get(BranchOp))
2320 .addReg(MI->getOperand(1).getReg())
2324 unsigned RD1 = RegInfo.createVirtualRegister(RC);
2325 BuildMI(*FBB, FBB->end(), DL, TII->get(Mips::ADDiu), RD1)
2326 .addReg(Mips::ZERO).addImm(0);
2327 BuildMI(*FBB, FBB->end(), DL, TII->get(Mips::B)).addMBB(Sink);
2330 unsigned RD2 = RegInfo.createVirtualRegister(RC);
2331 BuildMI(*TBB, TBB->end(), DL, TII->get(Mips::ADDiu), RD2)
2332 .addReg(Mips::ZERO).addImm(1);
2334 // Insert phi function to $Sink.
2335 BuildMI(*Sink, Sink->begin(), DL, TII->get(Mips::PHI),
2336 MI->getOperand(0).getReg())
2337 .addReg(RD1).addMBB(FBB).addReg(RD2).addMBB(TBB);
2339 MI->eraseFromParent(); // The pseudo instruction is gone now.
2343 // Emit the COPY_FW pseudo instruction.
2345 // copy_fw_pseudo $fd, $ws, n
2347 // copy_u_w $rt, $ws, $n
2350 // When n is zero, the equivalent operation can be performed with (potentially)
2351 // zero instructions due to register overlaps. This optimization is never valid
2352 // for lane 1 because it would require FR=0 mode which isn't supported by MSA.
2353 MachineBasicBlock * MipsSETargetLowering::
2354 emitCOPY_FW(MachineInstr *MI, MachineBasicBlock *BB) const{
2355 const TargetInstrInfo *TII = getTargetMachine().getInstrInfo();
2356 MachineRegisterInfo &RegInfo = BB->getParent()->getRegInfo();
2357 DebugLoc DL = MI->getDebugLoc();
2358 unsigned Fd = MI->getOperand(0).getReg();
2359 unsigned Ws = MI->getOperand(1).getReg();
2360 unsigned Lane = MI->getOperand(2).getImm();
2363 BuildMI(*BB, MI, DL, TII->get(Mips::COPY), Fd).addReg(Ws, 0, Mips::sub_lo);
2365 unsigned Wt = RegInfo.createVirtualRegister(&Mips::MSA128WRegClass);
2367 BuildMI(*BB, MI, DL, TII->get(Mips::SPLATI_W), Wt).addReg(Ws).addImm(1);
2368 BuildMI(*BB, MI, DL, TII->get(Mips::COPY), Fd).addReg(Wt, 0, Mips::sub_lo);
2371 MI->eraseFromParent(); // The pseudo instruction is gone now.
2375 // Emit the COPY_FD pseudo instruction.
2377 // copy_fd_pseudo $fd, $ws, n
2379 // splati.d $wt, $ws, $n
2380 // copy $fd, $wt:sub_64
2382 // When n is zero, the equivalent operation can be performed with (potentially)
2383 // zero instructions due to register overlaps. This optimization is always
2384 // valid because FR=1 mode which is the only supported mode in MSA.
2385 MachineBasicBlock * MipsSETargetLowering::
2386 emitCOPY_FD(MachineInstr *MI, MachineBasicBlock *BB) const{
2387 assert(Subtarget->isFP64bit());
2389 const TargetInstrInfo *TII = getTargetMachine().getInstrInfo();
2390 MachineRegisterInfo &RegInfo = BB->getParent()->getRegInfo();
2391 unsigned Fd = MI->getOperand(0).getReg();
2392 unsigned Ws = MI->getOperand(1).getReg();
2393 unsigned Lane = MI->getOperand(2).getImm() * 2;
2394 DebugLoc DL = MI->getDebugLoc();
2397 BuildMI(*BB, MI, DL, TII->get(Mips::COPY), Fd).addReg(Ws, 0, Mips::sub_64);
2399 unsigned Wt = RegInfo.createVirtualRegister(&Mips::MSA128DRegClass);
2401 BuildMI(*BB, MI, DL, TII->get(Mips::SPLATI_D), Wt).addReg(Ws).addImm(1);
2402 BuildMI(*BB, MI, DL, TII->get(Mips::COPY), Fd).addReg(Wt, 0, Mips::sub_64);
2405 MI->eraseFromParent(); // The pseudo instruction is gone now.
2409 // Emit the INSERT_FW pseudo instruction.
2411 // insert_fw_pseudo $wd, $wd_in, $n, $fs
2413 // subreg_to_reg $wt:sub_lo, $fs
2414 // insve_w $wd[$n], $wd_in, $wt[0]
2416 MipsSETargetLowering::emitINSERT_FW(MachineInstr *MI,
2417 MachineBasicBlock *BB) const {
2418 const TargetInstrInfo *TII = getTargetMachine().getInstrInfo();
2419 MachineRegisterInfo &RegInfo = BB->getParent()->getRegInfo();
2420 DebugLoc DL = MI->getDebugLoc();
2421 unsigned Wd = MI->getOperand(0).getReg();
2422 unsigned Wd_in = MI->getOperand(1).getReg();
2423 unsigned Lane = MI->getOperand(2).getImm();
2424 unsigned Fs = MI->getOperand(3).getReg();
2425 unsigned Wt = RegInfo.createVirtualRegister(&Mips::MSA128WRegClass);
2427 BuildMI(*BB, MI, DL, TII->get(Mips::SUBREG_TO_REG), Wt)
2430 .addImm(Mips::sub_lo);
2431 BuildMI(*BB, MI, DL, TII->get(Mips::INSVE_W), Wd)
2436 MI->eraseFromParent(); // The pseudo instruction is gone now.
2440 // Emit the INSERT_FD pseudo instruction.
2442 // insert_fd_pseudo $wd, $fs, n
2444 // subreg_to_reg $wt:sub_64, $fs
2445 // insve_d $wd[$n], $wd_in, $wt[0]
2447 MipsSETargetLowering::emitINSERT_FD(MachineInstr *MI,
2448 MachineBasicBlock *BB) const {
2449 assert(Subtarget->isFP64bit());
2451 const TargetInstrInfo *TII = getTargetMachine().getInstrInfo();
2452 MachineRegisterInfo &RegInfo = BB->getParent()->getRegInfo();
2453 DebugLoc DL = MI->getDebugLoc();
2454 unsigned Wd = MI->getOperand(0).getReg();
2455 unsigned Wd_in = MI->getOperand(1).getReg();
2456 unsigned Lane = MI->getOperand(2).getImm();
2457 unsigned Fs = MI->getOperand(3).getReg();
2458 unsigned Wt = RegInfo.createVirtualRegister(&Mips::MSA128DRegClass);
2460 BuildMI(*BB, MI, DL, TII->get(Mips::SUBREG_TO_REG), Wt)
2463 .addImm(Mips::sub_64);
2464 BuildMI(*BB, MI, DL, TII->get(Mips::INSVE_D), Wd)
2469 MI->eraseFromParent(); // The pseudo instruction is gone now.
2473 // Emit the FILL_FW pseudo instruction.
2475 // fill_fw_pseudo $wd, $fs
2477 // implicit_def $wt1
2478 // insert_subreg $wt2:subreg_lo, $wt1, $fs
2479 // splati.w $wd, $wt2[0]
2481 MipsSETargetLowering::emitFILL_FW(MachineInstr *MI,
2482 MachineBasicBlock *BB) const {
2483 const TargetInstrInfo *TII = getTargetMachine().getInstrInfo();
2484 MachineRegisterInfo &RegInfo = BB->getParent()->getRegInfo();
2485 DebugLoc DL = MI->getDebugLoc();
2486 unsigned Wd = MI->getOperand(0).getReg();
2487 unsigned Fs = MI->getOperand(1).getReg();
2488 unsigned Wt1 = RegInfo.createVirtualRegister(&Mips::MSA128WRegClass);
2489 unsigned Wt2 = RegInfo.createVirtualRegister(&Mips::MSA128WRegClass);
2491 BuildMI(*BB, MI, DL, TII->get(Mips::IMPLICIT_DEF), Wt1);
2492 BuildMI(*BB, MI, DL, TII->get(Mips::INSERT_SUBREG), Wt2)
2495 .addImm(Mips::sub_lo);
2496 BuildMI(*BB, MI, DL, TII->get(Mips::SPLATI_W), Wd).addReg(Wt2).addImm(0);
2498 MI->eraseFromParent(); // The pseudo instruction is gone now.
2502 // Emit the FILL_FD pseudo instruction.
2504 // fill_fd_pseudo $wd, $fs
2506 // implicit_def $wt1
2507 // insert_subreg $wt2:subreg_64, $wt1, $fs
2508 // splati.d $wd, $wt2[0]
2510 MipsSETargetLowering::emitFILL_FD(MachineInstr *MI,
2511 MachineBasicBlock *BB) const {
2512 assert(Subtarget->isFP64bit());
2514 const TargetInstrInfo *TII = getTargetMachine().getInstrInfo();
2515 MachineRegisterInfo &RegInfo = BB->getParent()->getRegInfo();
2516 DebugLoc DL = MI->getDebugLoc();
2517 unsigned Wd = MI->getOperand(0).getReg();
2518 unsigned Fs = MI->getOperand(1).getReg();
2519 unsigned Wt1 = RegInfo.createVirtualRegister(&Mips::MSA128DRegClass);
2520 unsigned Wt2 = RegInfo.createVirtualRegister(&Mips::MSA128DRegClass);
2522 BuildMI(*BB, MI, DL, TII->get(Mips::IMPLICIT_DEF), Wt1);
2523 BuildMI(*BB, MI, DL, TII->get(Mips::INSERT_SUBREG), Wt2)
2526 .addImm(Mips::sub_64);
2527 BuildMI(*BB, MI, DL, TII->get(Mips::SPLATI_D), Wd).addReg(Wt2).addImm(0);
2529 MI->eraseFromParent(); // The pseudo instruction is gone now.
2533 // Emit the FEXP2_W_1 pseudo instructions.
2535 // fexp2_w_1_pseudo $wd, $wt
2538 // fexp2.w $wd, $ws, $wt
2540 MipsSETargetLowering::emitFEXP2_W_1(MachineInstr *MI,
2541 MachineBasicBlock *BB) const {
2542 const TargetInstrInfo *TII = getTargetMachine().getInstrInfo();
2543 MachineRegisterInfo &RegInfo = BB->getParent()->getRegInfo();
2544 const TargetRegisterClass *RC = &Mips::MSA128WRegClass;
2545 unsigned Ws1 = RegInfo.createVirtualRegister(RC);
2546 unsigned Ws2 = RegInfo.createVirtualRegister(RC);
2547 DebugLoc DL = MI->getDebugLoc();
2549 // Splat 1.0 into a vector
2550 BuildMI(*BB, MI, DL, TII->get(Mips::LDI_W), Ws1).addImm(1);
2551 BuildMI(*BB, MI, DL, TII->get(Mips::FFINT_U_W), Ws2).addReg(Ws1);
2553 // Emit 1.0 * fexp2(Wt)
2554 BuildMI(*BB, MI, DL, TII->get(Mips::FEXP2_W), MI->getOperand(0).getReg())
2556 .addReg(MI->getOperand(1).getReg());
2558 MI->eraseFromParent(); // The pseudo instruction is gone now.
2562 // Emit the FEXP2_D_1 pseudo instructions.
2564 // fexp2_d_1_pseudo $wd, $wt
2567 // fexp2.d $wd, $ws, $wt
2569 MipsSETargetLowering::emitFEXP2_D_1(MachineInstr *MI,
2570 MachineBasicBlock *BB) const {
2571 const TargetInstrInfo *TII = getTargetMachine().getInstrInfo();
2572 MachineRegisterInfo &RegInfo = BB->getParent()->getRegInfo();
2573 const TargetRegisterClass *RC = &Mips::MSA128DRegClass;
2574 unsigned Ws1 = RegInfo.createVirtualRegister(RC);
2575 unsigned Ws2 = RegInfo.createVirtualRegister(RC);
2576 DebugLoc DL = MI->getDebugLoc();
2578 // Splat 1.0 into a vector
2579 BuildMI(*BB, MI, DL, TII->get(Mips::LDI_D), Ws1).addImm(1);
2580 BuildMI(*BB, MI, DL, TII->get(Mips::FFINT_U_D), Ws2).addReg(Ws1);
2582 // Emit 1.0 * fexp2(Wt)
2583 BuildMI(*BB, MI, DL, TII->get(Mips::FEXP2_D), MI->getOperand(0).getReg())
2585 .addReg(MI->getOperand(1).getReg());
2587 MI->eraseFromParent(); // The pseudo instruction is gone now.