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/Support/Debug.h"
21 #include "llvm/Support/raw_ostream.h"
22 #include "llvm/Target/TargetInstrInfo.h"
26 #define DEBUG_TYPE "mips-isel"
29 EnableMipsTailCalls("enable-mips-tail-calls", cl::Hidden,
30 cl::desc("MIPS: Enable tail calls."), cl::init(false));
32 static cl::opt<bool> NoDPLoadStore("mno-ldc1-sdc1", cl::init(false),
33 cl::desc("Expand double precision loads and "
34 "stores to their single precision "
37 MipsSETargetLowering::MipsSETargetLowering(MipsTargetMachine &TM)
38 : MipsTargetLowering(TM) {
39 // Set up the register classes
40 addRegisterClass(MVT::i32, &Mips::GPR32RegClass);
43 addRegisterClass(MVT::i64, &Mips::GPR64RegClass);
45 if (Subtarget->hasDSP() || Subtarget->hasMSA()) {
46 // Expand all truncating stores and extending loads.
47 unsigned FirstVT = (unsigned)MVT::FIRST_VECTOR_VALUETYPE;
48 unsigned LastVT = (unsigned)MVT::LAST_VECTOR_VALUETYPE;
50 for (unsigned VT0 = FirstVT; VT0 <= LastVT; ++VT0) {
51 for (unsigned VT1 = FirstVT; VT1 <= LastVT; ++VT1)
52 setTruncStoreAction((MVT::SimpleValueType)VT0,
53 (MVT::SimpleValueType)VT1, Expand);
55 setLoadExtAction(ISD::SEXTLOAD, (MVT::SimpleValueType)VT0, Expand);
56 setLoadExtAction(ISD::ZEXTLOAD, (MVT::SimpleValueType)VT0, Expand);
57 setLoadExtAction(ISD::EXTLOAD, (MVT::SimpleValueType)VT0, Expand);
61 if (Subtarget->hasDSP()) {
62 MVT::SimpleValueType VecTys[2] = {MVT::v2i16, MVT::v4i8};
64 for (unsigned i = 0; i < array_lengthof(VecTys); ++i) {
65 addRegisterClass(VecTys[i], &Mips::DSPRRegClass);
67 // Expand all builtin opcodes.
68 for (unsigned Opc = 0; Opc < ISD::BUILTIN_OP_END; ++Opc)
69 setOperationAction(Opc, VecTys[i], Expand);
71 setOperationAction(ISD::ADD, VecTys[i], Legal);
72 setOperationAction(ISD::SUB, VecTys[i], Legal);
73 setOperationAction(ISD::LOAD, VecTys[i], Legal);
74 setOperationAction(ISD::STORE, VecTys[i], Legal);
75 setOperationAction(ISD::BITCAST, VecTys[i], Legal);
78 setTargetDAGCombine(ISD::SHL);
79 setTargetDAGCombine(ISD::SRA);
80 setTargetDAGCombine(ISD::SRL);
81 setTargetDAGCombine(ISD::SETCC);
82 setTargetDAGCombine(ISD::VSELECT);
85 if (Subtarget->hasDSPR2())
86 setOperationAction(ISD::MUL, MVT::v2i16, Legal);
88 if (Subtarget->hasMSA()) {
89 addMSAIntType(MVT::v16i8, &Mips::MSA128BRegClass);
90 addMSAIntType(MVT::v8i16, &Mips::MSA128HRegClass);
91 addMSAIntType(MVT::v4i32, &Mips::MSA128WRegClass);
92 addMSAIntType(MVT::v2i64, &Mips::MSA128DRegClass);
93 addMSAFloatType(MVT::v8f16, &Mips::MSA128HRegClass);
94 addMSAFloatType(MVT::v4f32, &Mips::MSA128WRegClass);
95 addMSAFloatType(MVT::v2f64, &Mips::MSA128DRegClass);
97 setTargetDAGCombine(ISD::AND);
98 setTargetDAGCombine(ISD::OR);
99 setTargetDAGCombine(ISD::SRA);
100 setTargetDAGCombine(ISD::VSELECT);
101 setTargetDAGCombine(ISD::XOR);
104 if (!Subtarget->mipsSEUsesSoftFloat()) {
105 addRegisterClass(MVT::f32, &Mips::FGR32RegClass);
107 // When dealing with single precision only, use libcalls
108 if (!Subtarget->isSingleFloat()) {
109 if (Subtarget->isFP64bit())
110 addRegisterClass(MVT::f64, &Mips::FGR64RegClass);
112 addRegisterClass(MVT::f64, &Mips::AFGR64RegClass);
116 setOperationAction(ISD::SMUL_LOHI, MVT::i32, Custom);
117 setOperationAction(ISD::UMUL_LOHI, MVT::i32, Custom);
118 setOperationAction(ISD::MULHS, MVT::i32, Custom);
119 setOperationAction(ISD::MULHU, MVT::i32, Custom);
121 if (Subtarget->hasCnMips())
122 setOperationAction(ISD::MUL, MVT::i64, Legal);
123 else if (isGP64bit())
124 setOperationAction(ISD::MUL, MVT::i64, Custom);
127 setOperationAction(ISD::MULHS, MVT::i64, Custom);
128 setOperationAction(ISD::MULHU, MVT::i64, Custom);
131 setOperationAction(ISD::INTRINSIC_WO_CHAIN, MVT::i64, Custom);
132 setOperationAction(ISD::INTRINSIC_W_CHAIN, MVT::i64, Custom);
134 setOperationAction(ISD::SDIVREM, MVT::i32, Custom);
135 setOperationAction(ISD::UDIVREM, MVT::i32, Custom);
136 setOperationAction(ISD::SDIVREM, MVT::i64, Custom);
137 setOperationAction(ISD::UDIVREM, MVT::i64, Custom);
138 setOperationAction(ISD::ATOMIC_FENCE, MVT::Other, Custom);
139 setOperationAction(ISD::LOAD, MVT::i32, Custom);
140 setOperationAction(ISD::STORE, MVT::i32, Custom);
142 setTargetDAGCombine(ISD::ADDE);
143 setTargetDAGCombine(ISD::SUBE);
144 setTargetDAGCombine(ISD::MUL);
146 setOperationAction(ISD::INTRINSIC_WO_CHAIN, MVT::Other, Custom);
147 setOperationAction(ISD::INTRINSIC_W_CHAIN, MVT::Other, Custom);
148 setOperationAction(ISD::INTRINSIC_VOID, MVT::Other, Custom);
151 setOperationAction(ISD::LOAD, MVT::f64, Custom);
152 setOperationAction(ISD::STORE, MVT::f64, Custom);
155 computeRegisterProperties();
158 const MipsTargetLowering *
159 llvm::createMipsSETargetLowering(MipsTargetMachine &TM) {
160 return new MipsSETargetLowering(TM);
163 // Enable MSA support for the given integer type and Register class.
164 void MipsSETargetLowering::
165 addMSAIntType(MVT::SimpleValueType Ty, const TargetRegisterClass *RC) {
166 addRegisterClass(Ty, RC);
168 // Expand all builtin opcodes.
169 for (unsigned Opc = 0; Opc < ISD::BUILTIN_OP_END; ++Opc)
170 setOperationAction(Opc, Ty, Expand);
172 setOperationAction(ISD::BITCAST, Ty, Legal);
173 setOperationAction(ISD::LOAD, Ty, Legal);
174 setOperationAction(ISD::STORE, Ty, Legal);
175 setOperationAction(ISD::EXTRACT_VECTOR_ELT, Ty, Custom);
176 setOperationAction(ISD::INSERT_VECTOR_ELT, Ty, Legal);
177 setOperationAction(ISD::BUILD_VECTOR, Ty, Custom);
179 setOperationAction(ISD::ADD, Ty, Legal);
180 setOperationAction(ISD::AND, Ty, Legal);
181 setOperationAction(ISD::CTLZ, Ty, Legal);
182 setOperationAction(ISD::CTPOP, Ty, Legal);
183 setOperationAction(ISD::MUL, Ty, Legal);
184 setOperationAction(ISD::OR, Ty, Legal);
185 setOperationAction(ISD::SDIV, Ty, Legal);
186 setOperationAction(ISD::SREM, Ty, Legal);
187 setOperationAction(ISD::SHL, Ty, Legal);
188 setOperationAction(ISD::SRA, Ty, Legal);
189 setOperationAction(ISD::SRL, Ty, Legal);
190 setOperationAction(ISD::SUB, Ty, Legal);
191 setOperationAction(ISD::UDIV, Ty, Legal);
192 setOperationAction(ISD::UREM, Ty, Legal);
193 setOperationAction(ISD::VECTOR_SHUFFLE, Ty, Custom);
194 setOperationAction(ISD::VSELECT, Ty, Legal);
195 setOperationAction(ISD::XOR, Ty, Legal);
197 if (Ty == MVT::v4i32 || Ty == MVT::v2i64) {
198 setOperationAction(ISD::FP_TO_SINT, Ty, Legal);
199 setOperationAction(ISD::FP_TO_UINT, Ty, Legal);
200 setOperationAction(ISD::SINT_TO_FP, Ty, Legal);
201 setOperationAction(ISD::UINT_TO_FP, Ty, Legal);
204 setOperationAction(ISD::SETCC, Ty, Legal);
205 setCondCodeAction(ISD::SETNE, Ty, Expand);
206 setCondCodeAction(ISD::SETGE, Ty, Expand);
207 setCondCodeAction(ISD::SETGT, Ty, Expand);
208 setCondCodeAction(ISD::SETUGE, Ty, Expand);
209 setCondCodeAction(ISD::SETUGT, Ty, Expand);
212 // Enable MSA support for the given floating-point type and Register class.
213 void MipsSETargetLowering::
214 addMSAFloatType(MVT::SimpleValueType Ty, const TargetRegisterClass *RC) {
215 addRegisterClass(Ty, RC);
217 // Expand all builtin opcodes.
218 for (unsigned Opc = 0; Opc < ISD::BUILTIN_OP_END; ++Opc)
219 setOperationAction(Opc, Ty, Expand);
221 setOperationAction(ISD::LOAD, Ty, Legal);
222 setOperationAction(ISD::STORE, Ty, Legal);
223 setOperationAction(ISD::BITCAST, Ty, Legal);
224 setOperationAction(ISD::EXTRACT_VECTOR_ELT, Ty, Legal);
225 setOperationAction(ISD::INSERT_VECTOR_ELT, Ty, Legal);
226 setOperationAction(ISD::BUILD_VECTOR, Ty, Custom);
228 if (Ty != MVT::v8f16) {
229 setOperationAction(ISD::FABS, Ty, Legal);
230 setOperationAction(ISD::FADD, Ty, Legal);
231 setOperationAction(ISD::FDIV, Ty, Legal);
232 setOperationAction(ISD::FEXP2, Ty, Legal);
233 setOperationAction(ISD::FLOG2, Ty, Legal);
234 setOperationAction(ISD::FMA, Ty, Legal);
235 setOperationAction(ISD::FMUL, Ty, Legal);
236 setOperationAction(ISD::FRINT, Ty, Legal);
237 setOperationAction(ISD::FSQRT, Ty, Legal);
238 setOperationAction(ISD::FSUB, Ty, Legal);
239 setOperationAction(ISD::VSELECT, Ty, Legal);
241 setOperationAction(ISD::SETCC, Ty, Legal);
242 setCondCodeAction(ISD::SETOGE, Ty, Expand);
243 setCondCodeAction(ISD::SETOGT, Ty, Expand);
244 setCondCodeAction(ISD::SETUGE, Ty, Expand);
245 setCondCodeAction(ISD::SETUGT, Ty, Expand);
246 setCondCodeAction(ISD::SETGE, Ty, Expand);
247 setCondCodeAction(ISD::SETGT, Ty, Expand);
252 MipsSETargetLowering::allowsUnalignedMemoryAccesses(EVT VT,
255 MVT::SimpleValueType SVT = VT.getSimpleVT().SimpleTy;
257 if (Subtarget->systemSupportsUnalignedAccess()) {
258 // MIPS32r6/MIPS64r6 is required to support unaligned access. It's
259 // implementation defined whether this is handled by hardware, software, or
260 // a hybrid of the two but it's expected that most implementations will
261 // handle the majority of cases in hardware.
278 SDValue MipsSETargetLowering::LowerOperation(SDValue Op,
279 SelectionDAG &DAG) const {
280 switch(Op.getOpcode()) {
281 case ISD::LOAD: return lowerLOAD(Op, DAG);
282 case ISD::STORE: return lowerSTORE(Op, DAG);
283 case ISD::SMUL_LOHI: return lowerMulDiv(Op, MipsISD::Mult, true, true, DAG);
284 case ISD::UMUL_LOHI: return lowerMulDiv(Op, MipsISD::Multu, true, true, DAG);
285 case ISD::MULHS: return lowerMulDiv(Op, MipsISD::Mult, false, true, DAG);
286 case ISD::MULHU: return lowerMulDiv(Op, MipsISD::Multu, false, true, DAG);
287 case ISD::MUL: return lowerMulDiv(Op, MipsISD::Mult, true, false, DAG);
288 case ISD::SDIVREM: return lowerMulDiv(Op, MipsISD::DivRem, true, true, DAG);
289 case ISD::UDIVREM: return lowerMulDiv(Op, MipsISD::DivRemU, true, true,
291 case ISD::INTRINSIC_WO_CHAIN: return lowerINTRINSIC_WO_CHAIN(Op, DAG);
292 case ISD::INTRINSIC_W_CHAIN: return lowerINTRINSIC_W_CHAIN(Op, DAG);
293 case ISD::INTRINSIC_VOID: return lowerINTRINSIC_VOID(Op, DAG);
294 case ISD::EXTRACT_VECTOR_ELT: return lowerEXTRACT_VECTOR_ELT(Op, DAG);
295 case ISD::BUILD_VECTOR: return lowerBUILD_VECTOR(Op, DAG);
296 case ISD::VECTOR_SHUFFLE: return lowerVECTOR_SHUFFLE(Op, DAG);
299 return MipsTargetLowering::LowerOperation(Op, DAG);
303 // Transforms a subgraph in CurDAG if the following pattern is found:
304 // (addc multLo, Lo0), (adde multHi, Hi0),
306 // multHi/Lo: product of multiplication
307 // Lo0: initial value of Lo register
308 // Hi0: initial value of Hi register
309 // Return true if pattern matching was successful.
310 static bool selectMADD(SDNode *ADDENode, SelectionDAG *CurDAG) {
311 // ADDENode's second operand must be a flag output of an ADDC node in order
312 // for the matching to be successful.
313 SDNode *ADDCNode = ADDENode->getOperand(2).getNode();
315 if (ADDCNode->getOpcode() != ISD::ADDC)
318 SDValue MultHi = ADDENode->getOperand(0);
319 SDValue MultLo = ADDCNode->getOperand(0);
320 SDNode *MultNode = MultHi.getNode();
321 unsigned MultOpc = MultHi.getOpcode();
323 // MultHi and MultLo must be generated by the same node,
324 if (MultLo.getNode() != MultNode)
327 // and it must be a multiplication.
328 if (MultOpc != ISD::SMUL_LOHI && MultOpc != ISD::UMUL_LOHI)
331 // MultLo amd MultHi must be the first and second output of MultNode
333 if (MultHi.getResNo() != 1 || MultLo.getResNo() != 0)
336 // Transform this to a MADD only if ADDENode and ADDCNode are the only users
337 // of the values of MultNode, in which case MultNode will be removed in later
339 // If there exist users other than ADDENode or ADDCNode, this function returns
340 // here, which will result in MultNode being mapped to a single MULT
341 // instruction node rather than a pair of MULT and MADD instructions being
343 if (!MultHi.hasOneUse() || !MultLo.hasOneUse())
348 // Initialize accumulator.
349 SDValue ACCIn = CurDAG->getNode(MipsISD::MTLOHI, DL, MVT::Untyped,
350 ADDCNode->getOperand(1),
351 ADDENode->getOperand(1));
353 // create MipsMAdd(u) node
354 MultOpc = MultOpc == ISD::UMUL_LOHI ? MipsISD::MAddu : MipsISD::MAdd;
356 SDValue MAdd = CurDAG->getNode(MultOpc, DL, MVT::Untyped,
357 MultNode->getOperand(0),// Factor 0
358 MultNode->getOperand(1),// Factor 1
361 // replace uses of adde and addc here
362 if (!SDValue(ADDCNode, 0).use_empty()) {
363 SDValue LoOut = CurDAG->getNode(MipsISD::MFLO, DL, MVT::i32, MAdd);
364 CurDAG->ReplaceAllUsesOfValueWith(SDValue(ADDCNode, 0), LoOut);
366 if (!SDValue(ADDENode, 0).use_empty()) {
367 SDValue HiOut = CurDAG->getNode(MipsISD::MFHI, DL, MVT::i32, MAdd);
368 CurDAG->ReplaceAllUsesOfValueWith(SDValue(ADDENode, 0), HiOut);
375 // Transforms a subgraph in CurDAG if the following pattern is found:
376 // (addc Lo0, multLo), (sube Hi0, multHi),
378 // multHi/Lo: product of multiplication
379 // Lo0: initial value of Lo register
380 // Hi0: initial value of Hi register
381 // Return true if pattern matching was successful.
382 static bool selectMSUB(SDNode *SUBENode, SelectionDAG *CurDAG) {
383 // SUBENode's second operand must be a flag output of an SUBC node in order
384 // for the matching to be successful.
385 SDNode *SUBCNode = SUBENode->getOperand(2).getNode();
387 if (SUBCNode->getOpcode() != ISD::SUBC)
390 SDValue MultHi = SUBENode->getOperand(1);
391 SDValue MultLo = SUBCNode->getOperand(1);
392 SDNode *MultNode = MultHi.getNode();
393 unsigned MultOpc = MultHi.getOpcode();
395 // MultHi and MultLo must be generated by the same node,
396 if (MultLo.getNode() != MultNode)
399 // and it must be a multiplication.
400 if (MultOpc != ISD::SMUL_LOHI && MultOpc != ISD::UMUL_LOHI)
403 // MultLo amd MultHi must be the first and second output of MultNode
405 if (MultHi.getResNo() != 1 || MultLo.getResNo() != 0)
408 // Transform this to a MSUB only if SUBENode and SUBCNode are the only users
409 // of the values of MultNode, in which case MultNode will be removed in later
411 // If there exist users other than SUBENode or SUBCNode, this function returns
412 // here, which will result in MultNode being mapped to a single MULT
413 // instruction node rather than a pair of MULT and MSUB instructions being
415 if (!MultHi.hasOneUse() || !MultLo.hasOneUse())
420 // Initialize accumulator.
421 SDValue ACCIn = CurDAG->getNode(MipsISD::MTLOHI, DL, MVT::Untyped,
422 SUBCNode->getOperand(0),
423 SUBENode->getOperand(0));
425 // create MipsSub(u) node
426 MultOpc = MultOpc == ISD::UMUL_LOHI ? MipsISD::MSubu : MipsISD::MSub;
428 SDValue MSub = CurDAG->getNode(MultOpc, DL, MVT::Glue,
429 MultNode->getOperand(0),// Factor 0
430 MultNode->getOperand(1),// Factor 1
433 // replace uses of sube and subc here
434 if (!SDValue(SUBCNode, 0).use_empty()) {
435 SDValue LoOut = CurDAG->getNode(MipsISD::MFLO, DL, MVT::i32, MSub);
436 CurDAG->ReplaceAllUsesOfValueWith(SDValue(SUBCNode, 0), LoOut);
438 if (!SDValue(SUBENode, 0).use_empty()) {
439 SDValue HiOut = CurDAG->getNode(MipsISD::MFHI, DL, MVT::i32, MSub);
440 CurDAG->ReplaceAllUsesOfValueWith(SDValue(SUBENode, 0), HiOut);
446 static SDValue performADDECombine(SDNode *N, SelectionDAG &DAG,
447 TargetLowering::DAGCombinerInfo &DCI,
448 const MipsSubtarget *Subtarget) {
449 if (DCI.isBeforeLegalize())
452 if (Subtarget->hasMips32() && N->getValueType(0) == MVT::i32 &&
454 return SDValue(N, 0);
459 // Fold zero extensions into MipsISD::VEXTRACT_[SZ]EXT_ELT
461 // Performs the following transformations:
462 // - Changes MipsISD::VEXTRACT_[SZ]EXT_ELT to zero extension if its
463 // sign/zero-extension is completely overwritten by the new one performed by
465 // - Removes redundant zero extensions performed by an ISD::AND.
466 static SDValue performANDCombine(SDNode *N, SelectionDAG &DAG,
467 TargetLowering::DAGCombinerInfo &DCI,
468 const MipsSubtarget *Subtarget) {
469 if (!Subtarget->hasMSA())
472 SDValue Op0 = N->getOperand(0);
473 SDValue Op1 = N->getOperand(1);
474 unsigned Op0Opcode = Op0->getOpcode();
476 // (and (MipsVExtract[SZ]Ext $a, $b, $c), imm:$d)
477 // where $d + 1 == 2^n and n == 32
478 // or $d + 1 == 2^n and n <= 32 and ZExt
479 // -> (MipsVExtractZExt $a, $b, $c)
480 if (Op0Opcode == MipsISD::VEXTRACT_SEXT_ELT ||
481 Op0Opcode == MipsISD::VEXTRACT_ZEXT_ELT) {
482 ConstantSDNode *Mask = dyn_cast<ConstantSDNode>(Op1);
487 int32_t Log2IfPositive = (Mask->getAPIntValue() + 1).exactLogBase2();
489 if (Log2IfPositive <= 0)
490 return SDValue(); // Mask+1 is not a power of 2
492 SDValue Op0Op2 = Op0->getOperand(2);
493 EVT ExtendTy = cast<VTSDNode>(Op0Op2)->getVT();
494 unsigned ExtendTySize = ExtendTy.getSizeInBits();
495 unsigned Log2 = Log2IfPositive;
497 if ((Op0Opcode == MipsISD::VEXTRACT_ZEXT_ELT && Log2 >= ExtendTySize) ||
498 Log2 == ExtendTySize) {
499 SDValue Ops[] = { Op0->getOperand(0), Op0->getOperand(1), Op0Op2 };
500 DAG.MorphNodeTo(Op0.getNode(), MipsISD::VEXTRACT_ZEXT_ELT,
502 makeArrayRef(Ops, Op0->getNumOperands()));
510 // Determine if the specified node is a constant vector splat.
512 // Returns true and sets Imm if:
513 // * N is a ISD::BUILD_VECTOR representing a constant splat
515 // This function is quite similar to MipsSEDAGToDAGISel::selectVSplat. The
516 // differences are that it assumes the MSA has already been checked and the
517 // arbitrary requirement for a maximum of 32-bit integers isn't applied (and
518 // must not be in order for binsri.d to be selectable).
519 static bool isVSplat(SDValue N, APInt &Imm, bool IsLittleEndian) {
520 BuildVectorSDNode *Node = dyn_cast<BuildVectorSDNode>(N.getNode());
525 APInt SplatValue, SplatUndef;
526 unsigned SplatBitSize;
529 if (!Node->isConstantSplat(SplatValue, SplatUndef, SplatBitSize, HasAnyUndefs,
538 // Test whether the given node is an all-ones build_vector.
539 static bool isVectorAllOnes(SDValue N) {
540 // Look through bitcasts. Endianness doesn't matter because we are looking
541 // for an all-ones value.
542 if (N->getOpcode() == ISD::BITCAST)
543 N = N->getOperand(0);
545 BuildVectorSDNode *BVN = dyn_cast<BuildVectorSDNode>(N);
550 APInt SplatValue, SplatUndef;
551 unsigned SplatBitSize;
554 // Endianness doesn't matter in this context because we are looking for
555 // an all-ones value.
556 if (BVN->isConstantSplat(SplatValue, SplatUndef, SplatBitSize, HasAnyUndefs))
557 return SplatValue.isAllOnesValue();
562 // Test whether N is the bitwise inverse of OfNode.
563 static bool isBitwiseInverse(SDValue N, SDValue OfNode) {
564 if (N->getOpcode() != ISD::XOR)
567 if (isVectorAllOnes(N->getOperand(0)))
568 return N->getOperand(1) == OfNode;
570 if (isVectorAllOnes(N->getOperand(1)))
571 return N->getOperand(0) == OfNode;
576 // Perform combines where ISD::OR is the root node.
578 // Performs the following transformations:
579 // - (or (and $a, $mask), (and $b, $inv_mask)) => (vselect $mask, $a, $b)
580 // where $inv_mask is the bitwise inverse of $mask and the 'or' has a 128-bit
582 static SDValue performORCombine(SDNode *N, SelectionDAG &DAG,
583 TargetLowering::DAGCombinerInfo &DCI,
584 const MipsSubtarget *Subtarget) {
585 if (!Subtarget->hasMSA())
588 EVT Ty = N->getValueType(0);
590 if (!Ty.is128BitVector())
593 SDValue Op0 = N->getOperand(0);
594 SDValue Op1 = N->getOperand(1);
596 if (Op0->getOpcode() == ISD::AND && Op1->getOpcode() == ISD::AND) {
597 SDValue Op0Op0 = Op0->getOperand(0);
598 SDValue Op0Op1 = Op0->getOperand(1);
599 SDValue Op1Op0 = Op1->getOperand(0);
600 SDValue Op1Op1 = Op1->getOperand(1);
601 bool IsLittleEndian = !Subtarget->isLittle();
603 SDValue IfSet, IfClr, Cond;
604 bool IsConstantMask = false;
607 // If Op0Op0 is an appropriate mask, try to find it's inverse in either
608 // Op1Op0, or Op1Op1. Keep track of the Cond, IfSet, and IfClr nodes, while
610 // IfClr will be set if we find a valid match.
611 if (isVSplat(Op0Op0, Mask, IsLittleEndian)) {
615 if (isVSplat(Op1Op0, InvMask, IsLittleEndian) &&
616 Mask.getBitWidth() == InvMask.getBitWidth() && Mask == ~InvMask)
618 else if (isVSplat(Op1Op1, InvMask, IsLittleEndian) &&
619 Mask.getBitWidth() == InvMask.getBitWidth() && Mask == ~InvMask)
622 IsConstantMask = true;
625 // If IfClr is not yet set, and Op0Op1 is an appropriate mask, try the same
626 // thing again using this mask.
627 // IfClr will be set if we find a valid match.
628 if (!IfClr.getNode() && isVSplat(Op0Op1, Mask, IsLittleEndian)) {
632 if (isVSplat(Op1Op0, InvMask, IsLittleEndian) &&
633 Mask.getBitWidth() == InvMask.getBitWidth() && Mask == ~InvMask)
635 else if (isVSplat(Op1Op1, InvMask, IsLittleEndian) &&
636 Mask.getBitWidth() == InvMask.getBitWidth() && Mask == ~InvMask)
639 IsConstantMask = true;
642 // If IfClr is not yet set, try looking for a non-constant match.
643 // IfClr will be set if we find a valid match amongst the eight
645 if (!IfClr.getNode()) {
646 if (isBitwiseInverse(Op0Op0, Op1Op0)) {
650 } else if (isBitwiseInverse(Op0Op1, Op1Op0)) {
654 } else if (isBitwiseInverse(Op0Op0, Op1Op1)) {
658 } else if (isBitwiseInverse(Op0Op1, Op1Op1)) {
662 } else if (isBitwiseInverse(Op1Op0, Op0Op0)) {
666 } else if (isBitwiseInverse(Op1Op1, Op0Op0)) {
670 } else if (isBitwiseInverse(Op1Op0, Op0Op1)) {
674 } else if (isBitwiseInverse(Op1Op1, Op0Op1)) {
681 // At this point, IfClr will be set if we have a valid match.
682 if (!IfClr.getNode())
685 assert(Cond.getNode() && IfSet.getNode());
687 // Fold degenerate cases.
688 if (IsConstantMask) {
689 if (Mask.isAllOnesValue())
695 // Transform the DAG into an equivalent VSELECT.
696 return DAG.getNode(ISD::VSELECT, SDLoc(N), Ty, Cond, IfSet, IfClr);
702 static SDValue performSUBECombine(SDNode *N, SelectionDAG &DAG,
703 TargetLowering::DAGCombinerInfo &DCI,
704 const MipsSubtarget *Subtarget) {
705 if (DCI.isBeforeLegalize())
708 if (Subtarget->hasMips32() && N->getValueType(0) == MVT::i32 &&
710 return SDValue(N, 0);
715 static SDValue genConstMult(SDValue X, uint64_t C, SDLoc DL, EVT VT,
716 EVT ShiftTy, SelectionDAG &DAG) {
717 // Clear the upper (64 - VT.sizeInBits) bits.
718 C &= ((uint64_t)-1) >> (64 - VT.getSizeInBits());
722 return DAG.getConstant(0, VT);
728 // If c is power of 2, return (shl x, log2(c)).
729 if (isPowerOf2_64(C))
730 return DAG.getNode(ISD::SHL, DL, VT, X,
731 DAG.getConstant(Log2_64(C), ShiftTy));
733 unsigned Log2Ceil = Log2_64_Ceil(C);
734 uint64_t Floor = 1LL << Log2_64(C);
735 uint64_t Ceil = Log2Ceil == 64 ? 0LL : 1LL << Log2Ceil;
737 // If |c - floor_c| <= |c - ceil_c|,
738 // where floor_c = pow(2, floor(log2(c))) and ceil_c = pow(2, ceil(log2(c))),
739 // return (add constMult(x, floor_c), constMult(x, c - floor_c)).
740 if (C - Floor <= Ceil - C) {
741 SDValue Op0 = genConstMult(X, Floor, DL, VT, ShiftTy, DAG);
742 SDValue Op1 = genConstMult(X, C - Floor, DL, VT, ShiftTy, DAG);
743 return DAG.getNode(ISD::ADD, DL, VT, Op0, Op1);
746 // If |c - floor_c| > |c - ceil_c|,
747 // return (sub constMult(x, ceil_c), constMult(x, ceil_c - c)).
748 SDValue Op0 = genConstMult(X, Ceil, DL, VT, ShiftTy, DAG);
749 SDValue Op1 = genConstMult(X, Ceil - C, DL, VT, ShiftTy, DAG);
750 return DAG.getNode(ISD::SUB, DL, VT, Op0, Op1);
753 static SDValue performMULCombine(SDNode *N, SelectionDAG &DAG,
754 const TargetLowering::DAGCombinerInfo &DCI,
755 const MipsSETargetLowering *TL) {
756 EVT VT = N->getValueType(0);
758 if (ConstantSDNode *C = dyn_cast<ConstantSDNode>(N->getOperand(1)))
760 return genConstMult(N->getOperand(0), C->getZExtValue(), SDLoc(N),
761 VT, TL->getScalarShiftAmountTy(VT), DAG);
763 return SDValue(N, 0);
766 static SDValue performDSPShiftCombine(unsigned Opc, SDNode *N, EVT Ty,
768 const MipsSubtarget *Subtarget) {
769 // See if this is a vector splat immediate node.
770 APInt SplatValue, SplatUndef;
771 unsigned SplatBitSize;
773 unsigned EltSize = Ty.getVectorElementType().getSizeInBits();
774 BuildVectorSDNode *BV = dyn_cast<BuildVectorSDNode>(N->getOperand(1));
776 if (!Subtarget->hasDSP())
780 !BV->isConstantSplat(SplatValue, SplatUndef, SplatBitSize, HasAnyUndefs,
781 EltSize, !Subtarget->isLittle()) ||
782 (SplatBitSize != EltSize) ||
783 (SplatValue.getZExtValue() >= EltSize))
786 return DAG.getNode(Opc, SDLoc(N), Ty, N->getOperand(0),
787 DAG.getConstant(SplatValue.getZExtValue(), MVT::i32));
790 static SDValue performSHLCombine(SDNode *N, SelectionDAG &DAG,
791 TargetLowering::DAGCombinerInfo &DCI,
792 const MipsSubtarget *Subtarget) {
793 EVT Ty = N->getValueType(0);
795 if ((Ty != MVT::v2i16) && (Ty != MVT::v4i8))
798 return performDSPShiftCombine(MipsISD::SHLL_DSP, N, Ty, DAG, Subtarget);
801 // Fold sign-extensions into MipsISD::VEXTRACT_[SZ]EXT_ELT for MSA and fold
802 // constant splats into MipsISD::SHRA_DSP for DSPr2.
804 // Performs the following transformations:
805 // - Changes MipsISD::VEXTRACT_[SZ]EXT_ELT to sign extension if its
806 // sign/zero-extension is completely overwritten by the new one performed by
807 // the ISD::SRA and ISD::SHL nodes.
808 // - Removes redundant sign extensions performed by an ISD::SRA and ISD::SHL
811 // See performDSPShiftCombine for more information about the transformation
813 static SDValue performSRACombine(SDNode *N, SelectionDAG &DAG,
814 TargetLowering::DAGCombinerInfo &DCI,
815 const MipsSubtarget *Subtarget) {
816 EVT Ty = N->getValueType(0);
818 if (Subtarget->hasMSA()) {
819 SDValue Op0 = N->getOperand(0);
820 SDValue Op1 = N->getOperand(1);
822 // (sra (shl (MipsVExtract[SZ]Ext $a, $b, $c), imm:$d), imm:$d)
823 // where $d + sizeof($c) == 32
824 // or $d + sizeof($c) <= 32 and SExt
825 // -> (MipsVExtractSExt $a, $b, $c)
826 if (Op0->getOpcode() == ISD::SHL && Op1 == Op0->getOperand(1)) {
827 SDValue Op0Op0 = Op0->getOperand(0);
828 ConstantSDNode *ShAmount = dyn_cast<ConstantSDNode>(Op1);
833 if (Op0Op0->getOpcode() != MipsISD::VEXTRACT_SEXT_ELT &&
834 Op0Op0->getOpcode() != MipsISD::VEXTRACT_ZEXT_ELT)
837 EVT ExtendTy = cast<VTSDNode>(Op0Op0->getOperand(2))->getVT();
838 unsigned TotalBits = ShAmount->getZExtValue() + ExtendTy.getSizeInBits();
840 if (TotalBits == 32 ||
841 (Op0Op0->getOpcode() == MipsISD::VEXTRACT_SEXT_ELT &&
843 SDValue Ops[] = { Op0Op0->getOperand(0), Op0Op0->getOperand(1),
844 Op0Op0->getOperand(2) };
845 DAG.MorphNodeTo(Op0Op0.getNode(), MipsISD::VEXTRACT_SEXT_ELT,
847 makeArrayRef(Ops, Op0Op0->getNumOperands()));
853 if ((Ty != MVT::v2i16) && ((Ty != MVT::v4i8) || !Subtarget->hasDSPR2()))
856 return performDSPShiftCombine(MipsISD::SHRA_DSP, N, Ty, DAG, Subtarget);
860 static SDValue performSRLCombine(SDNode *N, SelectionDAG &DAG,
861 TargetLowering::DAGCombinerInfo &DCI,
862 const MipsSubtarget *Subtarget) {
863 EVT Ty = N->getValueType(0);
865 if (((Ty != MVT::v2i16) || !Subtarget->hasDSPR2()) && (Ty != MVT::v4i8))
868 return performDSPShiftCombine(MipsISD::SHRL_DSP, N, Ty, DAG, Subtarget);
871 static bool isLegalDSPCondCode(EVT Ty, ISD::CondCode CC) {
872 bool IsV216 = (Ty == MVT::v2i16);
876 case ISD::SETNE: return true;
880 case ISD::SETGE: return IsV216;
884 case ISD::SETUGE: return !IsV216;
885 default: return false;
889 static SDValue performSETCCCombine(SDNode *N, SelectionDAG &DAG) {
890 EVT Ty = N->getValueType(0);
892 if ((Ty != MVT::v2i16) && (Ty != MVT::v4i8))
895 if (!isLegalDSPCondCode(Ty, cast<CondCodeSDNode>(N->getOperand(2))->get()))
898 return DAG.getNode(MipsISD::SETCC_DSP, SDLoc(N), Ty, N->getOperand(0),
899 N->getOperand(1), N->getOperand(2));
902 static SDValue performVSELECTCombine(SDNode *N, SelectionDAG &DAG) {
903 EVT Ty = N->getValueType(0);
905 if (Ty.is128BitVector() && Ty.isInteger()) {
906 // Try the following combines:
907 // (vselect (setcc $a, $b, SETLT), $b, $a)) -> (vsmax $a, $b)
908 // (vselect (setcc $a, $b, SETLE), $b, $a)) -> (vsmax $a, $b)
909 // (vselect (setcc $a, $b, SETLT), $a, $b)) -> (vsmin $a, $b)
910 // (vselect (setcc $a, $b, SETLE), $a, $b)) -> (vsmin $a, $b)
911 // (vselect (setcc $a, $b, SETULT), $b, $a)) -> (vumax $a, $b)
912 // (vselect (setcc $a, $b, SETULE), $b, $a)) -> (vumax $a, $b)
913 // (vselect (setcc $a, $b, SETULT), $a, $b)) -> (vumin $a, $b)
914 // (vselect (setcc $a, $b, SETULE), $a, $b)) -> (vumin $a, $b)
915 // SETGT/SETGE/SETUGT/SETUGE variants of these will show up initially but
916 // will be expanded to equivalent SETLT/SETLE/SETULT/SETULE versions by the
918 SDValue Op0 = N->getOperand(0);
920 if (Op0->getOpcode() != ISD::SETCC)
923 ISD::CondCode CondCode = cast<CondCodeSDNode>(Op0->getOperand(2))->get();
926 if (CondCode == ISD::SETLT || CondCode == ISD::SETLE)
928 else if (CondCode == ISD::SETULT || CondCode == ISD::SETULE)
933 SDValue Op1 = N->getOperand(1);
934 SDValue Op2 = N->getOperand(2);
935 SDValue Op0Op0 = Op0->getOperand(0);
936 SDValue Op0Op1 = Op0->getOperand(1);
938 if (Op1 == Op0Op0 && Op2 == Op0Op1)
939 return DAG.getNode(Signed ? MipsISD::VSMIN : MipsISD::VUMIN, SDLoc(N),
941 else if (Op1 == Op0Op1 && Op2 == Op0Op0)
942 return DAG.getNode(Signed ? MipsISD::VSMAX : MipsISD::VUMAX, SDLoc(N),
944 } else if ((Ty == MVT::v2i16) || (Ty == MVT::v4i8)) {
945 SDValue SetCC = N->getOperand(0);
947 if (SetCC.getOpcode() != MipsISD::SETCC_DSP)
950 return DAG.getNode(MipsISD::SELECT_CC_DSP, SDLoc(N), Ty,
951 SetCC.getOperand(0), SetCC.getOperand(1),
952 N->getOperand(1), N->getOperand(2), SetCC.getOperand(2));
958 static SDValue performXORCombine(SDNode *N, SelectionDAG &DAG,
959 const MipsSubtarget *Subtarget) {
960 EVT Ty = N->getValueType(0);
962 if (Subtarget->hasMSA() && Ty.is128BitVector() && Ty.isInteger()) {
963 // Try the following combines:
964 // (xor (or $a, $b), (build_vector allones))
965 // (xor (or $a, $b), (bitcast (build_vector allones)))
966 SDValue Op0 = N->getOperand(0);
967 SDValue Op1 = N->getOperand(1);
970 if (ISD::isBuildVectorAllOnes(Op0.getNode()))
972 else if (ISD::isBuildVectorAllOnes(Op1.getNode()))
977 if (NotOp->getOpcode() == ISD::OR)
978 return DAG.getNode(MipsISD::VNOR, SDLoc(N), Ty, NotOp->getOperand(0),
979 NotOp->getOperand(1));
986 MipsSETargetLowering::PerformDAGCombine(SDNode *N, DAGCombinerInfo &DCI) const {
987 SelectionDAG &DAG = DCI.DAG;
990 switch (N->getOpcode()) {
992 return performADDECombine(N, DAG, DCI, Subtarget);
994 Val = performANDCombine(N, DAG, DCI, Subtarget);
997 Val = performORCombine(N, DAG, DCI, Subtarget);
1000 return performSUBECombine(N, DAG, DCI, Subtarget);
1002 return performMULCombine(N, DAG, DCI, this);
1004 return performSHLCombine(N, DAG, DCI, Subtarget);
1006 return performSRACombine(N, DAG, DCI, Subtarget);
1008 return performSRLCombine(N, DAG, DCI, Subtarget);
1010 return performVSELECTCombine(N, DAG);
1012 Val = performXORCombine(N, DAG, Subtarget);
1015 Val = performSETCCCombine(N, DAG);
1019 if (Val.getNode()) {
1020 DEBUG(dbgs() << "\nMipsSE DAG Combine:\n";
1021 N->printrWithDepth(dbgs(), &DAG);
1022 dbgs() << "\n=> \n";
1023 Val.getNode()->printrWithDepth(dbgs(), &DAG);
1028 return MipsTargetLowering::PerformDAGCombine(N, DCI);
1032 MipsSETargetLowering::EmitInstrWithCustomInserter(MachineInstr *MI,
1033 MachineBasicBlock *BB) const {
1034 switch (MI->getOpcode()) {
1036 return MipsTargetLowering::EmitInstrWithCustomInserter(MI, BB);
1037 case Mips::BPOSGE32_PSEUDO:
1038 return emitBPOSGE32(MI, BB);
1039 case Mips::SNZ_B_PSEUDO:
1040 return emitMSACBranchPseudo(MI, BB, Mips::BNZ_B);
1041 case Mips::SNZ_H_PSEUDO:
1042 return emitMSACBranchPseudo(MI, BB, Mips::BNZ_H);
1043 case Mips::SNZ_W_PSEUDO:
1044 return emitMSACBranchPseudo(MI, BB, Mips::BNZ_W);
1045 case Mips::SNZ_D_PSEUDO:
1046 return emitMSACBranchPseudo(MI, BB, Mips::BNZ_D);
1047 case Mips::SNZ_V_PSEUDO:
1048 return emitMSACBranchPseudo(MI, BB, Mips::BNZ_V);
1049 case Mips::SZ_B_PSEUDO:
1050 return emitMSACBranchPseudo(MI, BB, Mips::BZ_B);
1051 case Mips::SZ_H_PSEUDO:
1052 return emitMSACBranchPseudo(MI, BB, Mips::BZ_H);
1053 case Mips::SZ_W_PSEUDO:
1054 return emitMSACBranchPseudo(MI, BB, Mips::BZ_W);
1055 case Mips::SZ_D_PSEUDO:
1056 return emitMSACBranchPseudo(MI, BB, Mips::BZ_D);
1057 case Mips::SZ_V_PSEUDO:
1058 return emitMSACBranchPseudo(MI, BB, Mips::BZ_V);
1059 case Mips::COPY_FW_PSEUDO:
1060 return emitCOPY_FW(MI, BB);
1061 case Mips::COPY_FD_PSEUDO:
1062 return emitCOPY_FD(MI, BB);
1063 case Mips::INSERT_FW_PSEUDO:
1064 return emitINSERT_FW(MI, BB);
1065 case Mips::INSERT_FD_PSEUDO:
1066 return emitINSERT_FD(MI, BB);
1067 case Mips::INSERT_B_VIDX_PSEUDO:
1068 return emitINSERT_DF_VIDX(MI, BB, 1, false);
1069 case Mips::INSERT_H_VIDX_PSEUDO:
1070 return emitINSERT_DF_VIDX(MI, BB, 2, false);
1071 case Mips::INSERT_W_VIDX_PSEUDO:
1072 return emitINSERT_DF_VIDX(MI, BB, 4, false);
1073 case Mips::INSERT_D_VIDX_PSEUDO:
1074 return emitINSERT_DF_VIDX(MI, BB, 8, false);
1075 case Mips::INSERT_FW_VIDX_PSEUDO:
1076 return emitINSERT_DF_VIDX(MI, BB, 4, true);
1077 case Mips::INSERT_FD_VIDX_PSEUDO:
1078 return emitINSERT_DF_VIDX(MI, BB, 8, true);
1079 case Mips::FILL_FW_PSEUDO:
1080 return emitFILL_FW(MI, BB);
1081 case Mips::FILL_FD_PSEUDO:
1082 return emitFILL_FD(MI, BB);
1083 case Mips::FEXP2_W_1_PSEUDO:
1084 return emitFEXP2_W_1(MI, BB);
1085 case Mips::FEXP2_D_1_PSEUDO:
1086 return emitFEXP2_D_1(MI, BB);
1090 bool MipsSETargetLowering::
1091 isEligibleForTailCallOptimization(const MipsCC &MipsCCInfo,
1092 unsigned NextStackOffset,
1093 const MipsFunctionInfo& FI) const {
1094 if (!EnableMipsTailCalls)
1097 // Return false if either the callee or caller has a byval argument.
1098 if (MipsCCInfo.hasByValArg() || FI.hasByvalArg())
1101 // Return true if the callee's argument area is no larger than the
1103 return NextStackOffset <= FI.getIncomingArgSize();
1106 void MipsSETargetLowering::
1107 getOpndList(SmallVectorImpl<SDValue> &Ops,
1108 std::deque< std::pair<unsigned, SDValue> > &RegsToPass,
1109 bool IsPICCall, bool GlobalOrExternal, bool InternalLinkage,
1110 CallLoweringInfo &CLI, SDValue Callee, SDValue Chain) const {
1111 Ops.push_back(Callee);
1112 MipsTargetLowering::getOpndList(Ops, RegsToPass, IsPICCall, GlobalOrExternal,
1113 InternalLinkage, CLI, Callee, Chain);
1116 SDValue MipsSETargetLowering::lowerLOAD(SDValue Op, SelectionDAG &DAG) const {
1117 LoadSDNode &Nd = *cast<LoadSDNode>(Op);
1119 if (Nd.getMemoryVT() != MVT::f64 || !NoDPLoadStore)
1120 return MipsTargetLowering::lowerLOAD(Op, DAG);
1122 // Replace a double precision load with two i32 loads and a buildpair64.
1124 SDValue Ptr = Nd.getBasePtr(), Chain = Nd.getChain();
1125 EVT PtrVT = Ptr.getValueType();
1127 // i32 load from lower address.
1128 SDValue Lo = DAG.getLoad(MVT::i32, DL, Chain, Ptr,
1129 MachinePointerInfo(), Nd.isVolatile(),
1130 Nd.isNonTemporal(), Nd.isInvariant(),
1133 // i32 load from higher address.
1134 Ptr = DAG.getNode(ISD::ADD, DL, PtrVT, Ptr, DAG.getConstant(4, PtrVT));
1135 SDValue Hi = DAG.getLoad(MVT::i32, DL, Lo.getValue(1), Ptr,
1136 MachinePointerInfo(), Nd.isVolatile(),
1137 Nd.isNonTemporal(), Nd.isInvariant(),
1138 std::min(Nd.getAlignment(), 4U));
1140 if (!Subtarget->isLittle())
1143 SDValue BP = DAG.getNode(MipsISD::BuildPairF64, DL, MVT::f64, Lo, Hi);
1144 SDValue Ops[2] = {BP, Hi.getValue(1)};
1145 return DAG.getMergeValues(Ops, DL);
1148 SDValue MipsSETargetLowering::lowerSTORE(SDValue Op, SelectionDAG &DAG) const {
1149 StoreSDNode &Nd = *cast<StoreSDNode>(Op);
1151 if (Nd.getMemoryVT() != MVT::f64 || !NoDPLoadStore)
1152 return MipsTargetLowering::lowerSTORE(Op, DAG);
1154 // Replace a double precision store with two extractelement64s and i32 stores.
1156 SDValue Val = Nd.getValue(), Ptr = Nd.getBasePtr(), Chain = Nd.getChain();
1157 EVT PtrVT = Ptr.getValueType();
1158 SDValue Lo = DAG.getNode(MipsISD::ExtractElementF64, DL, MVT::i32,
1159 Val, DAG.getConstant(0, MVT::i32));
1160 SDValue Hi = DAG.getNode(MipsISD::ExtractElementF64, DL, MVT::i32,
1161 Val, DAG.getConstant(1, MVT::i32));
1163 if (!Subtarget->isLittle())
1166 // i32 store to lower address.
1167 Chain = DAG.getStore(Chain, DL, Lo, Ptr, MachinePointerInfo(),
1168 Nd.isVolatile(), Nd.isNonTemporal(), Nd.getAlignment(),
1171 // i32 store to higher address.
1172 Ptr = DAG.getNode(ISD::ADD, DL, PtrVT, Ptr, DAG.getConstant(4, PtrVT));
1173 return DAG.getStore(Chain, DL, Hi, Ptr, MachinePointerInfo(),
1174 Nd.isVolatile(), Nd.isNonTemporal(),
1175 std::min(Nd.getAlignment(), 4U), Nd.getTBAAInfo());
1178 SDValue MipsSETargetLowering::lowerMulDiv(SDValue Op, unsigned NewOpc,
1179 bool HasLo, bool HasHi,
1180 SelectionDAG &DAG) const {
1181 EVT Ty = Op.getOperand(0).getValueType();
1183 SDValue Mult = DAG.getNode(NewOpc, DL, MVT::Untyped,
1184 Op.getOperand(0), Op.getOperand(1));
1188 Lo = DAG.getNode(MipsISD::MFLO, DL, Ty, Mult);
1190 Hi = DAG.getNode(MipsISD::MFHI, DL, Ty, Mult);
1192 if (!HasLo || !HasHi)
1193 return HasLo ? Lo : Hi;
1195 SDValue Vals[] = { Lo, Hi };
1196 return DAG.getMergeValues(Vals, DL);
1200 static SDValue initAccumulator(SDValue In, SDLoc DL, SelectionDAG &DAG) {
1201 SDValue InLo = DAG.getNode(ISD::EXTRACT_ELEMENT, DL, MVT::i32, In,
1202 DAG.getConstant(0, MVT::i32));
1203 SDValue InHi = DAG.getNode(ISD::EXTRACT_ELEMENT, DL, MVT::i32, In,
1204 DAG.getConstant(1, MVT::i32));
1205 return DAG.getNode(MipsISD::MTLOHI, DL, MVT::Untyped, InLo, InHi);
1208 static SDValue extractLOHI(SDValue Op, SDLoc DL, SelectionDAG &DAG) {
1209 SDValue Lo = DAG.getNode(MipsISD::MFLO, DL, MVT::i32, Op);
1210 SDValue Hi = DAG.getNode(MipsISD::MFHI, DL, MVT::i32, Op);
1211 return DAG.getNode(ISD::BUILD_PAIR, DL, MVT::i64, Lo, Hi);
1214 // This function expands mips intrinsic nodes which have 64-bit input operands
1215 // or output values.
1217 // out64 = intrinsic-node in64
1219 // lo = copy (extract-element (in64, 0))
1220 // hi = copy (extract-element (in64, 1))
1221 // mips-specific-node
1224 // out64 = merge-values (v0, v1)
1226 static SDValue lowerDSPIntr(SDValue Op, SelectionDAG &DAG, unsigned Opc) {
1228 bool HasChainIn = Op->getOperand(0).getValueType() == MVT::Other;
1229 SmallVector<SDValue, 3> Ops;
1232 // See if Op has a chain input.
1234 Ops.push_back(Op->getOperand(OpNo++));
1236 // The next operand is the intrinsic opcode.
1237 assert(Op->getOperand(OpNo).getOpcode() == ISD::TargetConstant);
1239 // See if the next operand has type i64.
1240 SDValue Opnd = Op->getOperand(++OpNo), In64;
1242 if (Opnd.getValueType() == MVT::i64)
1243 In64 = initAccumulator(Opnd, DL, DAG);
1245 Ops.push_back(Opnd);
1247 // Push the remaining operands.
1248 for (++OpNo ; OpNo < Op->getNumOperands(); ++OpNo)
1249 Ops.push_back(Op->getOperand(OpNo));
1251 // Add In64 to the end of the list.
1253 Ops.push_back(In64);
1256 SmallVector<EVT, 2> ResTys;
1258 for (SDNode::value_iterator I = Op->value_begin(), E = Op->value_end();
1260 ResTys.push_back((*I == MVT::i64) ? MVT::Untyped : *I);
1263 SDValue Val = DAG.getNode(Opc, DL, ResTys, Ops);
1264 SDValue Out = (ResTys[0] == MVT::Untyped) ? extractLOHI(Val, DL, DAG) : Val;
1269 assert(Val->getValueType(1) == MVT::Other);
1270 SDValue Vals[] = { Out, SDValue(Val.getNode(), 1) };
1271 return DAG.getMergeValues(Vals, DL);
1274 // Lower an MSA copy intrinsic into the specified SelectionDAG node
1275 static SDValue lowerMSACopyIntr(SDValue Op, SelectionDAG &DAG, unsigned Opc) {
1277 SDValue Vec = Op->getOperand(1);
1278 SDValue Idx = Op->getOperand(2);
1279 EVT ResTy = Op->getValueType(0);
1280 EVT EltTy = Vec->getValueType(0).getVectorElementType();
1282 SDValue Result = DAG.getNode(Opc, DL, ResTy, Vec, Idx,
1283 DAG.getValueType(EltTy));
1288 static SDValue lowerMSASplatZExt(SDValue Op, unsigned OpNr, SelectionDAG &DAG) {
1289 EVT ResVecTy = Op->getValueType(0);
1290 EVT ViaVecTy = ResVecTy;
1293 // When ResVecTy == MVT::v2i64, LaneA is the upper 32 bits of the lane and
1294 // LaneB is the lower 32-bits. Otherwise LaneA and LaneB are alternating
1297 SDValue LaneB = Op->getOperand(2);
1299 if (ResVecTy == MVT::v2i64) {
1300 LaneA = DAG.getConstant(0, MVT::i32);
1301 ViaVecTy = MVT::v4i32;
1305 SDValue Ops[16] = { LaneA, LaneB, LaneA, LaneB, LaneA, LaneB, LaneA, LaneB,
1306 LaneA, LaneB, LaneA, LaneB, LaneA, LaneB, LaneA, LaneB };
1308 SDValue Result = DAG.getNode(ISD::BUILD_VECTOR, DL, ViaVecTy,
1309 makeArrayRef(Ops, ViaVecTy.getVectorNumElements()));
1311 if (ViaVecTy != ResVecTy)
1312 Result = DAG.getNode(ISD::BITCAST, DL, ResVecTy, Result);
1317 static SDValue lowerMSASplatImm(SDValue Op, unsigned ImmOp, SelectionDAG &DAG) {
1318 return DAG.getConstant(Op->getConstantOperandVal(ImmOp), Op->getValueType(0));
1321 static SDValue getBuildVectorSplat(EVT VecTy, SDValue SplatValue,
1322 bool BigEndian, SelectionDAG &DAG) {
1323 EVT ViaVecTy = VecTy;
1324 SDValue SplatValueA = SplatValue;
1325 SDValue SplatValueB = SplatValue;
1326 SDLoc DL(SplatValue);
1328 if (VecTy == MVT::v2i64) {
1329 // v2i64 BUILD_VECTOR must be performed via v4i32 so split into i32's.
1330 ViaVecTy = MVT::v4i32;
1332 SplatValueA = DAG.getNode(ISD::TRUNCATE, DL, MVT::i32, SplatValue);
1333 SplatValueB = DAG.getNode(ISD::SRL, DL, MVT::i64, SplatValue,
1334 DAG.getConstant(32, MVT::i32));
1335 SplatValueB = DAG.getNode(ISD::TRUNCATE, DL, MVT::i32, SplatValueB);
1338 // We currently hold the parts in little endian order. Swap them if
1341 std::swap(SplatValueA, SplatValueB);
1343 SDValue Ops[16] = { SplatValueA, SplatValueB, SplatValueA, SplatValueB,
1344 SplatValueA, SplatValueB, SplatValueA, SplatValueB,
1345 SplatValueA, SplatValueB, SplatValueA, SplatValueB,
1346 SplatValueA, SplatValueB, SplatValueA, SplatValueB };
1348 SDValue Result = DAG.getNode(ISD::BUILD_VECTOR, DL, ViaVecTy,
1349 makeArrayRef(Ops, ViaVecTy.getVectorNumElements()));
1351 if (VecTy != ViaVecTy)
1352 Result = DAG.getNode(ISD::BITCAST, DL, VecTy, Result);
1357 static SDValue lowerMSABinaryBitImmIntr(SDValue Op, SelectionDAG &DAG,
1358 unsigned Opc, SDValue Imm,
1360 EVT VecTy = Op->getValueType(0);
1364 // The DAG Combiner can't constant fold bitcasted vectors yet so we must do it
1366 if (VecTy == MVT::v2i64) {
1367 if (ConstantSDNode *CImm = dyn_cast<ConstantSDNode>(Imm)) {
1368 APInt BitImm = APInt(64, 1) << CImm->getAPIntValue();
1370 SDValue BitImmHiOp = DAG.getConstant(BitImm.lshr(32).trunc(32), MVT::i32);
1371 SDValue BitImmLoOp = DAG.getConstant(BitImm.trunc(32), MVT::i32);
1374 std::swap(BitImmLoOp, BitImmHiOp);
1377 DAG.getNode(ISD::BITCAST, DL, MVT::v2i64,
1378 DAG.getNode(ISD::BUILD_VECTOR, DL, MVT::v4i32, BitImmLoOp,
1379 BitImmHiOp, BitImmLoOp, BitImmHiOp));
1383 if (!Exp2Imm.getNode()) {
1384 // We couldnt constant fold, do a vector shift instead
1386 // Extend i32 to i64 if necessary. Sign or zero extend doesn't matter since
1387 // only values 0-63 are valid.
1388 if (VecTy == MVT::v2i64)
1389 Imm = DAG.getNode(ISD::ZERO_EXTEND, DL, MVT::i64, Imm);
1391 Exp2Imm = getBuildVectorSplat(VecTy, Imm, BigEndian, DAG);
1394 DAG.getNode(ISD::SHL, DL, VecTy, DAG.getConstant(1, VecTy), Exp2Imm);
1397 return DAG.getNode(Opc, DL, VecTy, Op->getOperand(1), Exp2Imm);
1400 static SDValue lowerMSABitClear(SDValue Op, SelectionDAG &DAG) {
1401 EVT ResTy = Op->getValueType(0);
1403 SDValue One = DAG.getConstant(1, ResTy);
1404 SDValue Bit = DAG.getNode(ISD::SHL, DL, ResTy, One, Op->getOperand(2));
1406 return DAG.getNode(ISD::AND, DL, ResTy, Op->getOperand(1),
1407 DAG.getNOT(DL, Bit, ResTy));
1410 static SDValue lowerMSABitClearImm(SDValue Op, SelectionDAG &DAG) {
1412 EVT ResTy = Op->getValueType(0);
1413 APInt BitImm = APInt(ResTy.getVectorElementType().getSizeInBits(), 1)
1414 << cast<ConstantSDNode>(Op->getOperand(2))->getAPIntValue();
1415 SDValue BitMask = DAG.getConstant(~BitImm, ResTy);
1417 return DAG.getNode(ISD::AND, DL, ResTy, Op->getOperand(1), BitMask);
1420 SDValue MipsSETargetLowering::lowerINTRINSIC_WO_CHAIN(SDValue Op,
1421 SelectionDAG &DAG) const {
1424 switch (cast<ConstantSDNode>(Op->getOperand(0))->getZExtValue()) {
1427 case Intrinsic::mips_shilo:
1428 return lowerDSPIntr(Op, DAG, MipsISD::SHILO);
1429 case Intrinsic::mips_dpau_h_qbl:
1430 return lowerDSPIntr(Op, DAG, MipsISD::DPAU_H_QBL);
1431 case Intrinsic::mips_dpau_h_qbr:
1432 return lowerDSPIntr(Op, DAG, MipsISD::DPAU_H_QBR);
1433 case Intrinsic::mips_dpsu_h_qbl:
1434 return lowerDSPIntr(Op, DAG, MipsISD::DPSU_H_QBL);
1435 case Intrinsic::mips_dpsu_h_qbr:
1436 return lowerDSPIntr(Op, DAG, MipsISD::DPSU_H_QBR);
1437 case Intrinsic::mips_dpa_w_ph:
1438 return lowerDSPIntr(Op, DAG, MipsISD::DPA_W_PH);
1439 case Intrinsic::mips_dps_w_ph:
1440 return lowerDSPIntr(Op, DAG, MipsISD::DPS_W_PH);
1441 case Intrinsic::mips_dpax_w_ph:
1442 return lowerDSPIntr(Op, DAG, MipsISD::DPAX_W_PH);
1443 case Intrinsic::mips_dpsx_w_ph:
1444 return lowerDSPIntr(Op, DAG, MipsISD::DPSX_W_PH);
1445 case Intrinsic::mips_mulsa_w_ph:
1446 return lowerDSPIntr(Op, DAG, MipsISD::MULSA_W_PH);
1447 case Intrinsic::mips_mult:
1448 return lowerDSPIntr(Op, DAG, MipsISD::Mult);
1449 case Intrinsic::mips_multu:
1450 return lowerDSPIntr(Op, DAG, MipsISD::Multu);
1451 case Intrinsic::mips_madd:
1452 return lowerDSPIntr(Op, DAG, MipsISD::MAdd);
1453 case Intrinsic::mips_maddu:
1454 return lowerDSPIntr(Op, DAG, MipsISD::MAddu);
1455 case Intrinsic::mips_msub:
1456 return lowerDSPIntr(Op, DAG, MipsISD::MSub);
1457 case Intrinsic::mips_msubu:
1458 return lowerDSPIntr(Op, DAG, MipsISD::MSubu);
1459 case Intrinsic::mips_addv_b:
1460 case Intrinsic::mips_addv_h:
1461 case Intrinsic::mips_addv_w:
1462 case Intrinsic::mips_addv_d:
1463 return DAG.getNode(ISD::ADD, DL, Op->getValueType(0), Op->getOperand(1),
1465 case Intrinsic::mips_addvi_b:
1466 case Intrinsic::mips_addvi_h:
1467 case Intrinsic::mips_addvi_w:
1468 case Intrinsic::mips_addvi_d:
1469 return DAG.getNode(ISD::ADD, DL, Op->getValueType(0), Op->getOperand(1),
1470 lowerMSASplatImm(Op, 2, DAG));
1471 case Intrinsic::mips_and_v:
1472 return DAG.getNode(ISD::AND, DL, Op->getValueType(0), Op->getOperand(1),
1474 case Intrinsic::mips_andi_b:
1475 return DAG.getNode(ISD::AND, DL, Op->getValueType(0), Op->getOperand(1),
1476 lowerMSASplatImm(Op, 2, DAG));
1477 case Intrinsic::mips_bclr_b:
1478 case Intrinsic::mips_bclr_h:
1479 case Intrinsic::mips_bclr_w:
1480 case Intrinsic::mips_bclr_d:
1481 return lowerMSABitClear(Op, DAG);
1482 case Intrinsic::mips_bclri_b:
1483 case Intrinsic::mips_bclri_h:
1484 case Intrinsic::mips_bclri_w:
1485 case Intrinsic::mips_bclri_d:
1486 return lowerMSABitClearImm(Op, DAG);
1487 case Intrinsic::mips_binsli_b:
1488 case Intrinsic::mips_binsli_h:
1489 case Intrinsic::mips_binsli_w:
1490 case Intrinsic::mips_binsli_d: {
1491 // binsli_x(IfClear, IfSet, nbits) -> (vselect LBitsMask, IfSet, IfClear)
1492 EVT VecTy = Op->getValueType(0);
1493 EVT EltTy = VecTy.getVectorElementType();
1494 APInt Mask = APInt::getHighBitsSet(EltTy.getSizeInBits(),
1495 Op->getConstantOperandVal(3));
1496 return DAG.getNode(ISD::VSELECT, DL, VecTy,
1497 DAG.getConstant(Mask, VecTy, true), Op->getOperand(2),
1500 case Intrinsic::mips_binsri_b:
1501 case Intrinsic::mips_binsri_h:
1502 case Intrinsic::mips_binsri_w:
1503 case Intrinsic::mips_binsri_d: {
1504 // binsri_x(IfClear, IfSet, nbits) -> (vselect RBitsMask, IfSet, IfClear)
1505 EVT VecTy = Op->getValueType(0);
1506 EVT EltTy = VecTy.getVectorElementType();
1507 APInt Mask = APInt::getLowBitsSet(EltTy.getSizeInBits(),
1508 Op->getConstantOperandVal(3));
1509 return DAG.getNode(ISD::VSELECT, DL, VecTy,
1510 DAG.getConstant(Mask, VecTy, true), Op->getOperand(2),
1513 case Intrinsic::mips_bmnz_v:
1514 return DAG.getNode(ISD::VSELECT, DL, Op->getValueType(0), Op->getOperand(3),
1515 Op->getOperand(2), Op->getOperand(1));
1516 case Intrinsic::mips_bmnzi_b:
1517 return DAG.getNode(ISD::VSELECT, DL, Op->getValueType(0),
1518 lowerMSASplatImm(Op, 3, DAG), Op->getOperand(2),
1520 case Intrinsic::mips_bmz_v:
1521 return DAG.getNode(ISD::VSELECT, DL, Op->getValueType(0), Op->getOperand(3),
1522 Op->getOperand(1), Op->getOperand(2));
1523 case Intrinsic::mips_bmzi_b:
1524 return DAG.getNode(ISD::VSELECT, DL, Op->getValueType(0),
1525 lowerMSASplatImm(Op, 3, DAG), Op->getOperand(1),
1527 case Intrinsic::mips_bneg_b:
1528 case Intrinsic::mips_bneg_h:
1529 case Intrinsic::mips_bneg_w:
1530 case Intrinsic::mips_bneg_d: {
1531 EVT VecTy = Op->getValueType(0);
1532 SDValue One = DAG.getConstant(1, VecTy);
1534 return DAG.getNode(ISD::XOR, DL, VecTy, Op->getOperand(1),
1535 DAG.getNode(ISD::SHL, DL, VecTy, One,
1536 Op->getOperand(2)));
1538 case Intrinsic::mips_bnegi_b:
1539 case Intrinsic::mips_bnegi_h:
1540 case Intrinsic::mips_bnegi_w:
1541 case Intrinsic::mips_bnegi_d:
1542 return lowerMSABinaryBitImmIntr(Op, DAG, ISD::XOR, Op->getOperand(2),
1543 !Subtarget->isLittle());
1544 case Intrinsic::mips_bnz_b:
1545 case Intrinsic::mips_bnz_h:
1546 case Intrinsic::mips_bnz_w:
1547 case Intrinsic::mips_bnz_d:
1548 return DAG.getNode(MipsISD::VALL_NONZERO, DL, Op->getValueType(0),
1550 case Intrinsic::mips_bnz_v:
1551 return DAG.getNode(MipsISD::VANY_NONZERO, DL, Op->getValueType(0),
1553 case Intrinsic::mips_bsel_v:
1554 // bsel_v(Mask, IfClear, IfSet) -> (vselect Mask, IfSet, IfClear)
1555 return DAG.getNode(ISD::VSELECT, DL, Op->getValueType(0),
1556 Op->getOperand(1), Op->getOperand(3),
1558 case Intrinsic::mips_bseli_b:
1559 // bseli_v(Mask, IfClear, IfSet) -> (vselect Mask, IfSet, IfClear)
1560 return DAG.getNode(ISD::VSELECT, DL, Op->getValueType(0),
1561 Op->getOperand(1), lowerMSASplatImm(Op, 3, DAG),
1563 case Intrinsic::mips_bset_b:
1564 case Intrinsic::mips_bset_h:
1565 case Intrinsic::mips_bset_w:
1566 case Intrinsic::mips_bset_d: {
1567 EVT VecTy = Op->getValueType(0);
1568 SDValue One = DAG.getConstant(1, VecTy);
1570 return DAG.getNode(ISD::OR, DL, VecTy, Op->getOperand(1),
1571 DAG.getNode(ISD::SHL, DL, VecTy, One,
1572 Op->getOperand(2)));
1574 case Intrinsic::mips_bseti_b:
1575 case Intrinsic::mips_bseti_h:
1576 case Intrinsic::mips_bseti_w:
1577 case Intrinsic::mips_bseti_d:
1578 return lowerMSABinaryBitImmIntr(Op, DAG, ISD::OR, Op->getOperand(2),
1579 !Subtarget->isLittle());
1580 case Intrinsic::mips_bz_b:
1581 case Intrinsic::mips_bz_h:
1582 case Intrinsic::mips_bz_w:
1583 case Intrinsic::mips_bz_d:
1584 return DAG.getNode(MipsISD::VALL_ZERO, DL, Op->getValueType(0),
1586 case Intrinsic::mips_bz_v:
1587 return DAG.getNode(MipsISD::VANY_ZERO, DL, Op->getValueType(0),
1589 case Intrinsic::mips_ceq_b:
1590 case Intrinsic::mips_ceq_h:
1591 case Intrinsic::mips_ceq_w:
1592 case Intrinsic::mips_ceq_d:
1593 return DAG.getSetCC(DL, Op->getValueType(0), Op->getOperand(1),
1594 Op->getOperand(2), ISD::SETEQ);
1595 case Intrinsic::mips_ceqi_b:
1596 case Intrinsic::mips_ceqi_h:
1597 case Intrinsic::mips_ceqi_w:
1598 case Intrinsic::mips_ceqi_d:
1599 return DAG.getSetCC(DL, Op->getValueType(0), Op->getOperand(1),
1600 lowerMSASplatImm(Op, 2, DAG), ISD::SETEQ);
1601 case Intrinsic::mips_cle_s_b:
1602 case Intrinsic::mips_cle_s_h:
1603 case Intrinsic::mips_cle_s_w:
1604 case Intrinsic::mips_cle_s_d:
1605 return DAG.getSetCC(DL, Op->getValueType(0), Op->getOperand(1),
1606 Op->getOperand(2), ISD::SETLE);
1607 case Intrinsic::mips_clei_s_b:
1608 case Intrinsic::mips_clei_s_h:
1609 case Intrinsic::mips_clei_s_w:
1610 case Intrinsic::mips_clei_s_d:
1611 return DAG.getSetCC(DL, Op->getValueType(0), Op->getOperand(1),
1612 lowerMSASplatImm(Op, 2, DAG), ISD::SETLE);
1613 case Intrinsic::mips_cle_u_b:
1614 case Intrinsic::mips_cle_u_h:
1615 case Intrinsic::mips_cle_u_w:
1616 case Intrinsic::mips_cle_u_d:
1617 return DAG.getSetCC(DL, Op->getValueType(0), Op->getOperand(1),
1618 Op->getOperand(2), ISD::SETULE);
1619 case Intrinsic::mips_clei_u_b:
1620 case Intrinsic::mips_clei_u_h:
1621 case Intrinsic::mips_clei_u_w:
1622 case Intrinsic::mips_clei_u_d:
1623 return DAG.getSetCC(DL, Op->getValueType(0), Op->getOperand(1),
1624 lowerMSASplatImm(Op, 2, DAG), ISD::SETULE);
1625 case Intrinsic::mips_clt_s_b:
1626 case Intrinsic::mips_clt_s_h:
1627 case Intrinsic::mips_clt_s_w:
1628 case Intrinsic::mips_clt_s_d:
1629 return DAG.getSetCC(DL, Op->getValueType(0), Op->getOperand(1),
1630 Op->getOperand(2), ISD::SETLT);
1631 case Intrinsic::mips_clti_s_b:
1632 case Intrinsic::mips_clti_s_h:
1633 case Intrinsic::mips_clti_s_w:
1634 case Intrinsic::mips_clti_s_d:
1635 return DAG.getSetCC(DL, Op->getValueType(0), Op->getOperand(1),
1636 lowerMSASplatImm(Op, 2, DAG), ISD::SETLT);
1637 case Intrinsic::mips_clt_u_b:
1638 case Intrinsic::mips_clt_u_h:
1639 case Intrinsic::mips_clt_u_w:
1640 case Intrinsic::mips_clt_u_d:
1641 return DAG.getSetCC(DL, Op->getValueType(0), Op->getOperand(1),
1642 Op->getOperand(2), ISD::SETULT);
1643 case Intrinsic::mips_clti_u_b:
1644 case Intrinsic::mips_clti_u_h:
1645 case Intrinsic::mips_clti_u_w:
1646 case Intrinsic::mips_clti_u_d:
1647 return DAG.getSetCC(DL, Op->getValueType(0), Op->getOperand(1),
1648 lowerMSASplatImm(Op, 2, DAG), ISD::SETULT);
1649 case Intrinsic::mips_copy_s_b:
1650 case Intrinsic::mips_copy_s_h:
1651 case Intrinsic::mips_copy_s_w:
1652 return lowerMSACopyIntr(Op, DAG, MipsISD::VEXTRACT_SEXT_ELT);
1653 case Intrinsic::mips_copy_s_d:
1655 // Lower directly into VEXTRACT_SEXT_ELT since i64 is legal on Mips64.
1656 return lowerMSACopyIntr(Op, DAG, MipsISD::VEXTRACT_SEXT_ELT);
1658 // Lower into the generic EXTRACT_VECTOR_ELT node and let the type
1659 // legalizer and EXTRACT_VECTOR_ELT lowering sort it out.
1660 return DAG.getNode(ISD::EXTRACT_VECTOR_ELT, SDLoc(Op),
1661 Op->getValueType(0), Op->getOperand(1),
1664 case Intrinsic::mips_copy_u_b:
1665 case Intrinsic::mips_copy_u_h:
1666 case Intrinsic::mips_copy_u_w:
1667 return lowerMSACopyIntr(Op, DAG, MipsISD::VEXTRACT_ZEXT_ELT);
1668 case Intrinsic::mips_copy_u_d:
1670 // Lower directly into VEXTRACT_ZEXT_ELT since i64 is legal on Mips64.
1671 return lowerMSACopyIntr(Op, DAG, MipsISD::VEXTRACT_ZEXT_ELT);
1673 // Lower into the generic EXTRACT_VECTOR_ELT node and let the type
1674 // legalizer and EXTRACT_VECTOR_ELT lowering sort it out.
1675 // Note: When i64 is illegal, this results in copy_s.w instructions
1676 // instead of copy_u.w instructions. This makes no difference to the
1677 // behaviour since i64 is only illegal when the register file is 32-bit.
1678 return DAG.getNode(ISD::EXTRACT_VECTOR_ELT, SDLoc(Op),
1679 Op->getValueType(0), Op->getOperand(1),
1682 case Intrinsic::mips_div_s_b:
1683 case Intrinsic::mips_div_s_h:
1684 case Intrinsic::mips_div_s_w:
1685 case Intrinsic::mips_div_s_d:
1686 return DAG.getNode(ISD::SDIV, DL, Op->getValueType(0), Op->getOperand(1),
1688 case Intrinsic::mips_div_u_b:
1689 case Intrinsic::mips_div_u_h:
1690 case Intrinsic::mips_div_u_w:
1691 case Intrinsic::mips_div_u_d:
1692 return DAG.getNode(ISD::UDIV, DL, Op->getValueType(0), Op->getOperand(1),
1694 case Intrinsic::mips_fadd_w:
1695 case Intrinsic::mips_fadd_d:
1696 return DAG.getNode(ISD::FADD, DL, Op->getValueType(0), Op->getOperand(1),
1698 // Don't lower mips_fcaf_[wd] since LLVM folds SETFALSE condcodes away
1699 case Intrinsic::mips_fceq_w:
1700 case Intrinsic::mips_fceq_d:
1701 return DAG.getSetCC(DL, Op->getValueType(0), Op->getOperand(1),
1702 Op->getOperand(2), ISD::SETOEQ);
1703 case Intrinsic::mips_fcle_w:
1704 case Intrinsic::mips_fcle_d:
1705 return DAG.getSetCC(DL, Op->getValueType(0), Op->getOperand(1),
1706 Op->getOperand(2), ISD::SETOLE);
1707 case Intrinsic::mips_fclt_w:
1708 case Intrinsic::mips_fclt_d:
1709 return DAG.getSetCC(DL, Op->getValueType(0), Op->getOperand(1),
1710 Op->getOperand(2), ISD::SETOLT);
1711 case Intrinsic::mips_fcne_w:
1712 case Intrinsic::mips_fcne_d:
1713 return DAG.getSetCC(DL, Op->getValueType(0), Op->getOperand(1),
1714 Op->getOperand(2), ISD::SETONE);
1715 case Intrinsic::mips_fcor_w:
1716 case Intrinsic::mips_fcor_d:
1717 return DAG.getSetCC(DL, Op->getValueType(0), Op->getOperand(1),
1718 Op->getOperand(2), ISD::SETO);
1719 case Intrinsic::mips_fcueq_w:
1720 case Intrinsic::mips_fcueq_d:
1721 return DAG.getSetCC(DL, Op->getValueType(0), Op->getOperand(1),
1722 Op->getOperand(2), ISD::SETUEQ);
1723 case Intrinsic::mips_fcule_w:
1724 case Intrinsic::mips_fcule_d:
1725 return DAG.getSetCC(DL, Op->getValueType(0), Op->getOperand(1),
1726 Op->getOperand(2), ISD::SETULE);
1727 case Intrinsic::mips_fcult_w:
1728 case Intrinsic::mips_fcult_d:
1729 return DAG.getSetCC(DL, Op->getValueType(0), Op->getOperand(1),
1730 Op->getOperand(2), ISD::SETULT);
1731 case Intrinsic::mips_fcun_w:
1732 case Intrinsic::mips_fcun_d:
1733 return DAG.getSetCC(DL, Op->getValueType(0), Op->getOperand(1),
1734 Op->getOperand(2), ISD::SETUO);
1735 case Intrinsic::mips_fcune_w:
1736 case Intrinsic::mips_fcune_d:
1737 return DAG.getSetCC(DL, Op->getValueType(0), Op->getOperand(1),
1738 Op->getOperand(2), ISD::SETUNE);
1739 case Intrinsic::mips_fdiv_w:
1740 case Intrinsic::mips_fdiv_d:
1741 return DAG.getNode(ISD::FDIV, DL, Op->getValueType(0), Op->getOperand(1),
1743 case Intrinsic::mips_ffint_u_w:
1744 case Intrinsic::mips_ffint_u_d:
1745 return DAG.getNode(ISD::UINT_TO_FP, DL, Op->getValueType(0),
1747 case Intrinsic::mips_ffint_s_w:
1748 case Intrinsic::mips_ffint_s_d:
1749 return DAG.getNode(ISD::SINT_TO_FP, DL, Op->getValueType(0),
1751 case Intrinsic::mips_fill_b:
1752 case Intrinsic::mips_fill_h:
1753 case Intrinsic::mips_fill_w:
1754 case Intrinsic::mips_fill_d: {
1755 SmallVector<SDValue, 16> Ops;
1756 EVT ResTy = Op->getValueType(0);
1758 for (unsigned i = 0; i < ResTy.getVectorNumElements(); ++i)
1759 Ops.push_back(Op->getOperand(1));
1761 // If ResTy is v2i64 then the type legalizer will break this node down into
1762 // an equivalent v4i32.
1763 return DAG.getNode(ISD::BUILD_VECTOR, DL, ResTy, Ops);
1765 case Intrinsic::mips_fexp2_w:
1766 case Intrinsic::mips_fexp2_d: {
1767 EVT ResTy = Op->getValueType(0);
1769 ISD::FMUL, SDLoc(Op), ResTy, Op->getOperand(1),
1770 DAG.getNode(ISD::FEXP2, SDLoc(Op), ResTy, Op->getOperand(2)));
1772 case Intrinsic::mips_flog2_w:
1773 case Intrinsic::mips_flog2_d:
1774 return DAG.getNode(ISD::FLOG2, DL, Op->getValueType(0), Op->getOperand(1));
1775 case Intrinsic::mips_fmadd_w:
1776 case Intrinsic::mips_fmadd_d:
1777 return DAG.getNode(ISD::FMA, SDLoc(Op), Op->getValueType(0),
1778 Op->getOperand(1), Op->getOperand(2), Op->getOperand(3));
1779 case Intrinsic::mips_fmul_w:
1780 case Intrinsic::mips_fmul_d:
1781 return DAG.getNode(ISD::FMUL, DL, Op->getValueType(0), Op->getOperand(1),
1783 case Intrinsic::mips_fmsub_w:
1784 case Intrinsic::mips_fmsub_d: {
1785 EVT ResTy = Op->getValueType(0);
1786 return DAG.getNode(ISD::FSUB, SDLoc(Op), ResTy, Op->getOperand(1),
1787 DAG.getNode(ISD::FMUL, SDLoc(Op), ResTy,
1788 Op->getOperand(2), Op->getOperand(3)));
1790 case Intrinsic::mips_frint_w:
1791 case Intrinsic::mips_frint_d:
1792 return DAG.getNode(ISD::FRINT, DL, Op->getValueType(0), Op->getOperand(1));
1793 case Intrinsic::mips_fsqrt_w:
1794 case Intrinsic::mips_fsqrt_d:
1795 return DAG.getNode(ISD::FSQRT, DL, Op->getValueType(0), Op->getOperand(1));
1796 case Intrinsic::mips_fsub_w:
1797 case Intrinsic::mips_fsub_d:
1798 return DAG.getNode(ISD::FSUB, DL, Op->getValueType(0), Op->getOperand(1),
1800 case Intrinsic::mips_ftrunc_u_w:
1801 case Intrinsic::mips_ftrunc_u_d:
1802 return DAG.getNode(ISD::FP_TO_UINT, DL, Op->getValueType(0),
1804 case Intrinsic::mips_ftrunc_s_w:
1805 case Intrinsic::mips_ftrunc_s_d:
1806 return DAG.getNode(ISD::FP_TO_SINT, DL, Op->getValueType(0),
1808 case Intrinsic::mips_ilvev_b:
1809 case Intrinsic::mips_ilvev_h:
1810 case Intrinsic::mips_ilvev_w:
1811 case Intrinsic::mips_ilvev_d:
1812 return DAG.getNode(MipsISD::ILVEV, DL, Op->getValueType(0),
1813 Op->getOperand(1), Op->getOperand(2));
1814 case Intrinsic::mips_ilvl_b:
1815 case Intrinsic::mips_ilvl_h:
1816 case Intrinsic::mips_ilvl_w:
1817 case Intrinsic::mips_ilvl_d:
1818 return DAG.getNode(MipsISD::ILVL, DL, Op->getValueType(0),
1819 Op->getOperand(1), Op->getOperand(2));
1820 case Intrinsic::mips_ilvod_b:
1821 case Intrinsic::mips_ilvod_h:
1822 case Intrinsic::mips_ilvod_w:
1823 case Intrinsic::mips_ilvod_d:
1824 return DAG.getNode(MipsISD::ILVOD, DL, Op->getValueType(0),
1825 Op->getOperand(1), Op->getOperand(2));
1826 case Intrinsic::mips_ilvr_b:
1827 case Intrinsic::mips_ilvr_h:
1828 case Intrinsic::mips_ilvr_w:
1829 case Intrinsic::mips_ilvr_d:
1830 return DAG.getNode(MipsISD::ILVR, DL, Op->getValueType(0),
1831 Op->getOperand(1), Op->getOperand(2));
1832 case Intrinsic::mips_insert_b:
1833 case Intrinsic::mips_insert_h:
1834 case Intrinsic::mips_insert_w:
1835 case Intrinsic::mips_insert_d:
1836 return DAG.getNode(ISD::INSERT_VECTOR_ELT, SDLoc(Op), Op->getValueType(0),
1837 Op->getOperand(1), Op->getOperand(3), Op->getOperand(2));
1838 case Intrinsic::mips_insve_b:
1839 case Intrinsic::mips_insve_h:
1840 case Intrinsic::mips_insve_w:
1841 case Intrinsic::mips_insve_d:
1842 return DAG.getNode(MipsISD::INSVE, DL, Op->getValueType(0),
1843 Op->getOperand(1), Op->getOperand(2), Op->getOperand(3),
1844 DAG.getConstant(0, MVT::i32));
1845 case Intrinsic::mips_ldi_b:
1846 case Intrinsic::mips_ldi_h:
1847 case Intrinsic::mips_ldi_w:
1848 case Intrinsic::mips_ldi_d:
1849 return lowerMSASplatImm(Op, 1, DAG);
1850 case Intrinsic::mips_lsa:
1851 case Intrinsic::mips_dlsa: {
1852 EVT ResTy = Op->getValueType(0);
1853 return DAG.getNode(ISD::ADD, SDLoc(Op), ResTy, Op->getOperand(1),
1854 DAG.getNode(ISD::SHL, SDLoc(Op), ResTy,
1855 Op->getOperand(2), Op->getOperand(3)));
1857 case Intrinsic::mips_maddv_b:
1858 case Intrinsic::mips_maddv_h:
1859 case Intrinsic::mips_maddv_w:
1860 case Intrinsic::mips_maddv_d: {
1861 EVT ResTy = Op->getValueType(0);
1862 return DAG.getNode(ISD::ADD, SDLoc(Op), ResTy, Op->getOperand(1),
1863 DAG.getNode(ISD::MUL, SDLoc(Op), ResTy,
1864 Op->getOperand(2), Op->getOperand(3)));
1866 case Intrinsic::mips_max_s_b:
1867 case Intrinsic::mips_max_s_h:
1868 case Intrinsic::mips_max_s_w:
1869 case Intrinsic::mips_max_s_d:
1870 return DAG.getNode(MipsISD::VSMAX, DL, Op->getValueType(0),
1871 Op->getOperand(1), Op->getOperand(2));
1872 case Intrinsic::mips_max_u_b:
1873 case Intrinsic::mips_max_u_h:
1874 case Intrinsic::mips_max_u_w:
1875 case Intrinsic::mips_max_u_d:
1876 return DAG.getNode(MipsISD::VUMAX, DL, Op->getValueType(0),
1877 Op->getOperand(1), Op->getOperand(2));
1878 case Intrinsic::mips_maxi_s_b:
1879 case Intrinsic::mips_maxi_s_h:
1880 case Intrinsic::mips_maxi_s_w:
1881 case Intrinsic::mips_maxi_s_d:
1882 return DAG.getNode(MipsISD::VSMAX, DL, Op->getValueType(0),
1883 Op->getOperand(1), lowerMSASplatImm(Op, 2, DAG));
1884 case Intrinsic::mips_maxi_u_b:
1885 case Intrinsic::mips_maxi_u_h:
1886 case Intrinsic::mips_maxi_u_w:
1887 case Intrinsic::mips_maxi_u_d:
1888 return DAG.getNode(MipsISD::VUMAX, DL, Op->getValueType(0),
1889 Op->getOperand(1), lowerMSASplatImm(Op, 2, DAG));
1890 case Intrinsic::mips_min_s_b:
1891 case Intrinsic::mips_min_s_h:
1892 case Intrinsic::mips_min_s_w:
1893 case Intrinsic::mips_min_s_d:
1894 return DAG.getNode(MipsISD::VSMIN, DL, Op->getValueType(0),
1895 Op->getOperand(1), Op->getOperand(2));
1896 case Intrinsic::mips_min_u_b:
1897 case Intrinsic::mips_min_u_h:
1898 case Intrinsic::mips_min_u_w:
1899 case Intrinsic::mips_min_u_d:
1900 return DAG.getNode(MipsISD::VUMIN, DL, Op->getValueType(0),
1901 Op->getOperand(1), Op->getOperand(2));
1902 case Intrinsic::mips_mini_s_b:
1903 case Intrinsic::mips_mini_s_h:
1904 case Intrinsic::mips_mini_s_w:
1905 case Intrinsic::mips_mini_s_d:
1906 return DAG.getNode(MipsISD::VSMIN, DL, Op->getValueType(0),
1907 Op->getOperand(1), lowerMSASplatImm(Op, 2, DAG));
1908 case Intrinsic::mips_mini_u_b:
1909 case Intrinsic::mips_mini_u_h:
1910 case Intrinsic::mips_mini_u_w:
1911 case Intrinsic::mips_mini_u_d:
1912 return DAG.getNode(MipsISD::VUMIN, DL, Op->getValueType(0),
1913 Op->getOperand(1), lowerMSASplatImm(Op, 2, DAG));
1914 case Intrinsic::mips_mod_s_b:
1915 case Intrinsic::mips_mod_s_h:
1916 case Intrinsic::mips_mod_s_w:
1917 case Intrinsic::mips_mod_s_d:
1918 return DAG.getNode(ISD::SREM, DL, Op->getValueType(0), Op->getOperand(1),
1920 case Intrinsic::mips_mod_u_b:
1921 case Intrinsic::mips_mod_u_h:
1922 case Intrinsic::mips_mod_u_w:
1923 case Intrinsic::mips_mod_u_d:
1924 return DAG.getNode(ISD::UREM, DL, Op->getValueType(0), Op->getOperand(1),
1926 case Intrinsic::mips_mulv_b:
1927 case Intrinsic::mips_mulv_h:
1928 case Intrinsic::mips_mulv_w:
1929 case Intrinsic::mips_mulv_d:
1930 return DAG.getNode(ISD::MUL, DL, Op->getValueType(0), Op->getOperand(1),
1932 case Intrinsic::mips_msubv_b:
1933 case Intrinsic::mips_msubv_h:
1934 case Intrinsic::mips_msubv_w:
1935 case Intrinsic::mips_msubv_d: {
1936 EVT ResTy = Op->getValueType(0);
1937 return DAG.getNode(ISD::SUB, SDLoc(Op), ResTy, Op->getOperand(1),
1938 DAG.getNode(ISD::MUL, SDLoc(Op), ResTy,
1939 Op->getOperand(2), Op->getOperand(3)));
1941 case Intrinsic::mips_nlzc_b:
1942 case Intrinsic::mips_nlzc_h:
1943 case Intrinsic::mips_nlzc_w:
1944 case Intrinsic::mips_nlzc_d:
1945 return DAG.getNode(ISD::CTLZ, DL, Op->getValueType(0), Op->getOperand(1));
1946 case Intrinsic::mips_nor_v: {
1947 SDValue Res = DAG.getNode(ISD::OR, DL, Op->getValueType(0),
1948 Op->getOperand(1), Op->getOperand(2));
1949 return DAG.getNOT(DL, Res, Res->getValueType(0));
1951 case Intrinsic::mips_nori_b: {
1952 SDValue Res = DAG.getNode(ISD::OR, DL, Op->getValueType(0),
1954 lowerMSASplatImm(Op, 2, DAG));
1955 return DAG.getNOT(DL, Res, Res->getValueType(0));
1957 case Intrinsic::mips_or_v:
1958 return DAG.getNode(ISD::OR, DL, Op->getValueType(0), Op->getOperand(1),
1960 case Intrinsic::mips_ori_b:
1961 return DAG.getNode(ISD::OR, DL, Op->getValueType(0),
1962 Op->getOperand(1), lowerMSASplatImm(Op, 2, DAG));
1963 case Intrinsic::mips_pckev_b:
1964 case Intrinsic::mips_pckev_h:
1965 case Intrinsic::mips_pckev_w:
1966 case Intrinsic::mips_pckev_d:
1967 return DAG.getNode(MipsISD::PCKEV, DL, Op->getValueType(0),
1968 Op->getOperand(1), Op->getOperand(2));
1969 case Intrinsic::mips_pckod_b:
1970 case Intrinsic::mips_pckod_h:
1971 case Intrinsic::mips_pckod_w:
1972 case Intrinsic::mips_pckod_d:
1973 return DAG.getNode(MipsISD::PCKOD, DL, Op->getValueType(0),
1974 Op->getOperand(1), Op->getOperand(2));
1975 case Intrinsic::mips_pcnt_b:
1976 case Intrinsic::mips_pcnt_h:
1977 case Intrinsic::mips_pcnt_w:
1978 case Intrinsic::mips_pcnt_d:
1979 return DAG.getNode(ISD::CTPOP, DL, Op->getValueType(0), Op->getOperand(1));
1980 case Intrinsic::mips_shf_b:
1981 case Intrinsic::mips_shf_h:
1982 case Intrinsic::mips_shf_w:
1983 return DAG.getNode(MipsISD::SHF, DL, Op->getValueType(0),
1984 Op->getOperand(2), Op->getOperand(1));
1985 case Intrinsic::mips_sll_b:
1986 case Intrinsic::mips_sll_h:
1987 case Intrinsic::mips_sll_w:
1988 case Intrinsic::mips_sll_d:
1989 return DAG.getNode(ISD::SHL, DL, Op->getValueType(0), Op->getOperand(1),
1991 case Intrinsic::mips_slli_b:
1992 case Intrinsic::mips_slli_h:
1993 case Intrinsic::mips_slli_w:
1994 case Intrinsic::mips_slli_d:
1995 return DAG.getNode(ISD::SHL, DL, Op->getValueType(0),
1996 Op->getOperand(1), lowerMSASplatImm(Op, 2, DAG));
1997 case Intrinsic::mips_splat_b:
1998 case Intrinsic::mips_splat_h:
1999 case Intrinsic::mips_splat_w:
2000 case Intrinsic::mips_splat_d:
2001 // We can't lower via VECTOR_SHUFFLE because it requires constant shuffle
2002 // masks, nor can we lower via BUILD_VECTOR & EXTRACT_VECTOR_ELT because
2003 // EXTRACT_VECTOR_ELT can't extract i64's on MIPS32.
2004 // Instead we lower to MipsISD::VSHF and match from there.
2005 return DAG.getNode(MipsISD::VSHF, DL, Op->getValueType(0),
2006 lowerMSASplatZExt(Op, 2, DAG), Op->getOperand(1),
2008 case Intrinsic::mips_splati_b:
2009 case Intrinsic::mips_splati_h:
2010 case Intrinsic::mips_splati_w:
2011 case Intrinsic::mips_splati_d:
2012 return DAG.getNode(MipsISD::VSHF, DL, Op->getValueType(0),
2013 lowerMSASplatImm(Op, 2, DAG), Op->getOperand(1),
2015 case Intrinsic::mips_sra_b:
2016 case Intrinsic::mips_sra_h:
2017 case Intrinsic::mips_sra_w:
2018 case Intrinsic::mips_sra_d:
2019 return DAG.getNode(ISD::SRA, DL, Op->getValueType(0), Op->getOperand(1),
2021 case Intrinsic::mips_srai_b:
2022 case Intrinsic::mips_srai_h:
2023 case Intrinsic::mips_srai_w:
2024 case Intrinsic::mips_srai_d:
2025 return DAG.getNode(ISD::SRA, DL, Op->getValueType(0),
2026 Op->getOperand(1), lowerMSASplatImm(Op, 2, DAG));
2027 case Intrinsic::mips_srl_b:
2028 case Intrinsic::mips_srl_h:
2029 case Intrinsic::mips_srl_w:
2030 case Intrinsic::mips_srl_d:
2031 return DAG.getNode(ISD::SRL, DL, Op->getValueType(0), Op->getOperand(1),
2033 case Intrinsic::mips_srli_b:
2034 case Intrinsic::mips_srli_h:
2035 case Intrinsic::mips_srli_w:
2036 case Intrinsic::mips_srli_d:
2037 return DAG.getNode(ISD::SRL, DL, Op->getValueType(0),
2038 Op->getOperand(1), lowerMSASplatImm(Op, 2, DAG));
2039 case Intrinsic::mips_subv_b:
2040 case Intrinsic::mips_subv_h:
2041 case Intrinsic::mips_subv_w:
2042 case Intrinsic::mips_subv_d:
2043 return DAG.getNode(ISD::SUB, DL, Op->getValueType(0), Op->getOperand(1),
2045 case Intrinsic::mips_subvi_b:
2046 case Intrinsic::mips_subvi_h:
2047 case Intrinsic::mips_subvi_w:
2048 case Intrinsic::mips_subvi_d:
2049 return DAG.getNode(ISD::SUB, DL, Op->getValueType(0),
2050 Op->getOperand(1), lowerMSASplatImm(Op, 2, DAG));
2051 case Intrinsic::mips_vshf_b:
2052 case Intrinsic::mips_vshf_h:
2053 case Intrinsic::mips_vshf_w:
2054 case Intrinsic::mips_vshf_d:
2055 return DAG.getNode(MipsISD::VSHF, DL, Op->getValueType(0),
2056 Op->getOperand(1), Op->getOperand(2), Op->getOperand(3));
2057 case Intrinsic::mips_xor_v:
2058 return DAG.getNode(ISD::XOR, DL, Op->getValueType(0), Op->getOperand(1),
2060 case Intrinsic::mips_xori_b:
2061 return DAG.getNode(ISD::XOR, DL, Op->getValueType(0),
2062 Op->getOperand(1), lowerMSASplatImm(Op, 2, DAG));
2066 static SDValue lowerMSALoadIntr(SDValue Op, SelectionDAG &DAG, unsigned Intr) {
2068 SDValue ChainIn = Op->getOperand(0);
2069 SDValue Address = Op->getOperand(2);
2070 SDValue Offset = Op->getOperand(3);
2071 EVT ResTy = Op->getValueType(0);
2072 EVT PtrTy = Address->getValueType(0);
2074 Address = DAG.getNode(ISD::ADD, DL, PtrTy, Address, Offset);
2076 return DAG.getLoad(ResTy, DL, ChainIn, Address, MachinePointerInfo(), false,
2080 SDValue MipsSETargetLowering::lowerINTRINSIC_W_CHAIN(SDValue Op,
2081 SelectionDAG &DAG) const {
2082 unsigned Intr = cast<ConstantSDNode>(Op->getOperand(1))->getZExtValue();
2086 case Intrinsic::mips_extp:
2087 return lowerDSPIntr(Op, DAG, MipsISD::EXTP);
2088 case Intrinsic::mips_extpdp:
2089 return lowerDSPIntr(Op, DAG, MipsISD::EXTPDP);
2090 case Intrinsic::mips_extr_w:
2091 return lowerDSPIntr(Op, DAG, MipsISD::EXTR_W);
2092 case Intrinsic::mips_extr_r_w:
2093 return lowerDSPIntr(Op, DAG, MipsISD::EXTR_R_W);
2094 case Intrinsic::mips_extr_rs_w:
2095 return lowerDSPIntr(Op, DAG, MipsISD::EXTR_RS_W);
2096 case Intrinsic::mips_extr_s_h:
2097 return lowerDSPIntr(Op, DAG, MipsISD::EXTR_S_H);
2098 case Intrinsic::mips_mthlip:
2099 return lowerDSPIntr(Op, DAG, MipsISD::MTHLIP);
2100 case Intrinsic::mips_mulsaq_s_w_ph:
2101 return lowerDSPIntr(Op, DAG, MipsISD::MULSAQ_S_W_PH);
2102 case Intrinsic::mips_maq_s_w_phl:
2103 return lowerDSPIntr(Op, DAG, MipsISD::MAQ_S_W_PHL);
2104 case Intrinsic::mips_maq_s_w_phr:
2105 return lowerDSPIntr(Op, DAG, MipsISD::MAQ_S_W_PHR);
2106 case Intrinsic::mips_maq_sa_w_phl:
2107 return lowerDSPIntr(Op, DAG, MipsISD::MAQ_SA_W_PHL);
2108 case Intrinsic::mips_maq_sa_w_phr:
2109 return lowerDSPIntr(Op, DAG, MipsISD::MAQ_SA_W_PHR);
2110 case Intrinsic::mips_dpaq_s_w_ph:
2111 return lowerDSPIntr(Op, DAG, MipsISD::DPAQ_S_W_PH);
2112 case Intrinsic::mips_dpsq_s_w_ph:
2113 return lowerDSPIntr(Op, DAG, MipsISD::DPSQ_S_W_PH);
2114 case Intrinsic::mips_dpaq_sa_l_w:
2115 return lowerDSPIntr(Op, DAG, MipsISD::DPAQ_SA_L_W);
2116 case Intrinsic::mips_dpsq_sa_l_w:
2117 return lowerDSPIntr(Op, DAG, MipsISD::DPSQ_SA_L_W);
2118 case Intrinsic::mips_dpaqx_s_w_ph:
2119 return lowerDSPIntr(Op, DAG, MipsISD::DPAQX_S_W_PH);
2120 case Intrinsic::mips_dpaqx_sa_w_ph:
2121 return lowerDSPIntr(Op, DAG, MipsISD::DPAQX_SA_W_PH);
2122 case Intrinsic::mips_dpsqx_s_w_ph:
2123 return lowerDSPIntr(Op, DAG, MipsISD::DPSQX_S_W_PH);
2124 case Intrinsic::mips_dpsqx_sa_w_ph:
2125 return lowerDSPIntr(Op, DAG, MipsISD::DPSQX_SA_W_PH);
2126 case Intrinsic::mips_ld_b:
2127 case Intrinsic::mips_ld_h:
2128 case Intrinsic::mips_ld_w:
2129 case Intrinsic::mips_ld_d:
2130 return lowerMSALoadIntr(Op, DAG, Intr);
2134 static SDValue lowerMSAStoreIntr(SDValue Op, SelectionDAG &DAG, unsigned Intr) {
2136 SDValue ChainIn = Op->getOperand(0);
2137 SDValue Value = Op->getOperand(2);
2138 SDValue Address = Op->getOperand(3);
2139 SDValue Offset = Op->getOperand(4);
2140 EVT PtrTy = Address->getValueType(0);
2142 Address = DAG.getNode(ISD::ADD, DL, PtrTy, Address, Offset);
2144 return DAG.getStore(ChainIn, DL, Value, Address, MachinePointerInfo(), false,
2148 SDValue MipsSETargetLowering::lowerINTRINSIC_VOID(SDValue Op,
2149 SelectionDAG &DAG) const {
2150 unsigned Intr = cast<ConstantSDNode>(Op->getOperand(1))->getZExtValue();
2154 case Intrinsic::mips_st_b:
2155 case Intrinsic::mips_st_h:
2156 case Intrinsic::mips_st_w:
2157 case Intrinsic::mips_st_d:
2158 return lowerMSAStoreIntr(Op, DAG, Intr);
2162 /// \brief Check if the given BuildVectorSDNode is a splat.
2163 /// This method currently relies on DAG nodes being reused when equivalent,
2164 /// so it's possible for this to return false even when isConstantSplat returns
2166 static bool isSplatVector(const BuildVectorSDNode *N) {
2167 unsigned int nOps = N->getNumOperands();
2168 assert(nOps > 1 && "isSplatVector has 0 or 1 sized build vector");
2170 SDValue Operand0 = N->getOperand(0);
2172 for (unsigned int i = 1; i < nOps; ++i) {
2173 if (N->getOperand(i) != Operand0)
2180 // Lower ISD::EXTRACT_VECTOR_ELT into MipsISD::VEXTRACT_SEXT_ELT.
2182 // The non-value bits resulting from ISD::EXTRACT_VECTOR_ELT are undefined. We
2183 // choose to sign-extend but we could have equally chosen zero-extend. The
2184 // DAGCombiner will fold any sign/zero extension of the ISD::EXTRACT_VECTOR_ELT
2185 // result into this node later (possibly changing it to a zero-extend in the
2187 SDValue MipsSETargetLowering::
2188 lowerEXTRACT_VECTOR_ELT(SDValue Op, SelectionDAG &DAG) const {
2190 EVT ResTy = Op->getValueType(0);
2191 SDValue Op0 = Op->getOperand(0);
2192 EVT VecTy = Op0->getValueType(0);
2194 if (!VecTy.is128BitVector())
2197 if (ResTy.isInteger()) {
2198 SDValue Op1 = Op->getOperand(1);
2199 EVT EltTy = VecTy.getVectorElementType();
2200 return DAG.getNode(MipsISD::VEXTRACT_SEXT_ELT, DL, ResTy, Op0, Op1,
2201 DAG.getValueType(EltTy));
2207 static bool isConstantOrUndef(const SDValue Op) {
2208 if (Op->getOpcode() == ISD::UNDEF)
2210 if (dyn_cast<ConstantSDNode>(Op))
2212 if (dyn_cast<ConstantFPSDNode>(Op))
2217 static bool isConstantOrUndefBUILD_VECTOR(const BuildVectorSDNode *Op) {
2218 for (unsigned i = 0; i < Op->getNumOperands(); ++i)
2219 if (isConstantOrUndef(Op->getOperand(i)))
2224 // Lowers ISD::BUILD_VECTOR into appropriate SelectionDAG nodes for the
2227 // Lowers according to the following rules:
2228 // - Constant splats are legal as-is as long as the SplatBitSize is a power of
2229 // 2 less than or equal to 64 and the value fits into a signed 10-bit
2231 // - Constant splats are lowered to bitconverted BUILD_VECTORs if SplatBitSize
2232 // is a power of 2 less than or equal to 64 and the value does not fit into a
2233 // signed 10-bit immediate
2234 // - Non-constant splats are legal as-is.
2235 // - Non-constant non-splats are lowered to sequences of INSERT_VECTOR_ELT.
2236 // - All others are illegal and must be expanded.
2237 SDValue MipsSETargetLowering::lowerBUILD_VECTOR(SDValue Op,
2238 SelectionDAG &DAG) const {
2239 BuildVectorSDNode *Node = cast<BuildVectorSDNode>(Op);
2240 EVT ResTy = Op->getValueType(0);
2242 APInt SplatValue, SplatUndef;
2243 unsigned SplatBitSize;
2246 if (!Subtarget->hasMSA() || !ResTy.is128BitVector())
2249 if (Node->isConstantSplat(SplatValue, SplatUndef, SplatBitSize,
2251 !Subtarget->isLittle()) && SplatBitSize <= 64) {
2252 // We can only cope with 8, 16, 32, or 64-bit elements
2253 if (SplatBitSize != 8 && SplatBitSize != 16 && SplatBitSize != 32 &&
2257 // If the value fits into a simm10 then we can use ldi.[bhwd]
2258 // However, if it isn't an integer type we will have to bitcast from an
2259 // integer type first. Also, if there are any undefs, we must lower them
2260 // to defined values first.
2261 if (ResTy.isInteger() && !HasAnyUndefs && SplatValue.isSignedIntN(10))
2266 switch (SplatBitSize) {
2270 ViaVecTy = MVT::v16i8;
2273 ViaVecTy = MVT::v8i16;
2276 ViaVecTy = MVT::v4i32;
2279 // There's no fill.d to fall back on for 64-bit values
2283 // SelectionDAG::getConstant will promote SplatValue appropriately.
2284 SDValue Result = DAG.getConstant(SplatValue, ViaVecTy);
2286 // Bitcast to the type we originally wanted
2287 if (ViaVecTy != ResTy)
2288 Result = DAG.getNode(ISD::BITCAST, SDLoc(Node), ResTy, Result);
2291 } else if (isSplatVector(Node))
2293 else if (!isConstantOrUndefBUILD_VECTOR(Node)) {
2294 // Use INSERT_VECTOR_ELT operations rather than expand to stores.
2295 // The resulting code is the same length as the expansion, but it doesn't
2296 // use memory operations
2297 EVT ResTy = Node->getValueType(0);
2299 assert(ResTy.isVector());
2301 unsigned NumElts = ResTy.getVectorNumElements();
2302 SDValue Vector = DAG.getUNDEF(ResTy);
2303 for (unsigned i = 0; i < NumElts; ++i) {
2304 Vector = DAG.getNode(ISD::INSERT_VECTOR_ELT, DL, ResTy, Vector,
2305 Node->getOperand(i),
2306 DAG.getConstant(i, MVT::i32));
2314 // Lower VECTOR_SHUFFLE into SHF (if possible).
2316 // SHF splits the vector into blocks of four elements, then shuffles these
2317 // elements according to a <4 x i2> constant (encoded as an integer immediate).
2319 // It is therefore possible to lower into SHF when the mask takes the form:
2320 // <a, b, c, d, a+4, b+4, c+4, d+4, a+8, b+8, c+8, d+8, ...>
2321 // When undef's appear they are treated as if they were whatever value is
2322 // necessary in order to fit the above form.
2325 // %2 = shufflevector <8 x i16> %0, <8 x i16> undef,
2326 // <8 x i32> <i32 3, i32 2, i32 1, i32 0,
2327 // i32 7, i32 6, i32 5, i32 4>
2329 // (SHF_H $w0, $w1, 27)
2330 // where the 27 comes from:
2331 // 3 + (2 << 2) + (1 << 4) + (0 << 6)
2332 static SDValue lowerVECTOR_SHUFFLE_SHF(SDValue Op, EVT ResTy,
2333 SmallVector<int, 16> Indices,
2334 SelectionDAG &DAG) {
2335 int SHFIndices[4] = { -1, -1, -1, -1 };
2337 if (Indices.size() < 4)
2340 for (unsigned i = 0; i < 4; ++i) {
2341 for (unsigned j = i; j < Indices.size(); j += 4) {
2342 int Idx = Indices[j];
2344 // Convert from vector index to 4-element subvector index
2345 // If an index refers to an element outside of the subvector then give up
2348 if (Idx < 0 || Idx >= 4)
2352 // If the mask has an undef, replace it with the current index.
2353 // Note that it might still be undef if the current index is also undef
2354 if (SHFIndices[i] == -1)
2355 SHFIndices[i] = Idx;
2357 // Check that non-undef values are the same as in the mask. If they
2358 // aren't then give up
2359 if (!(Idx == -1 || Idx == SHFIndices[i]))
2364 // Calculate the immediate. Replace any remaining undefs with zero
2366 for (int i = 3; i >= 0; --i) {
2367 int Idx = SHFIndices[i];
2376 return DAG.getNode(MipsISD::SHF, SDLoc(Op), ResTy,
2377 DAG.getConstant(Imm, MVT::i32), Op->getOperand(0));
2380 // Lower VECTOR_SHUFFLE into ILVEV (if possible).
2382 // ILVEV interleaves the even elements from each vector.
2384 // It is possible to lower into ILVEV when the mask takes the form:
2385 // <0, n, 2, n+2, 4, n+4, ...>
2386 // where n is the number of elements in the vector.
2388 // When undef's appear in the mask they are treated as if they were whatever
2389 // value is necessary in order to fit the above form.
2390 static SDValue lowerVECTOR_SHUFFLE_ILVEV(SDValue Op, EVT ResTy,
2391 SmallVector<int, 16> Indices,
2392 SelectionDAG &DAG) {
2393 assert ((Indices.size() % 2) == 0);
2395 int WtIdx = ResTy.getVectorNumElements();
2397 for (unsigned i = 0; i < Indices.size(); i += 2) {
2398 if (Indices[i] != -1 && Indices[i] != WsIdx)
2400 if (Indices[i+1] != -1 && Indices[i+1] != WtIdx)
2406 return DAG.getNode(MipsISD::ILVEV, SDLoc(Op), ResTy, Op->getOperand(0),
2410 // Lower VECTOR_SHUFFLE into ILVOD (if possible).
2412 // ILVOD interleaves the odd elements from each vector.
2414 // It is possible to lower into ILVOD when the mask takes the form:
2415 // <1, n+1, 3, n+3, 5, n+5, ...>
2416 // where n is the number of elements in the vector.
2418 // When undef's appear in the mask they are treated as if they were whatever
2419 // value is necessary in order to fit the above form.
2420 static SDValue lowerVECTOR_SHUFFLE_ILVOD(SDValue Op, EVT ResTy,
2421 SmallVector<int, 16> Indices,
2422 SelectionDAG &DAG) {
2423 assert ((Indices.size() % 2) == 0);
2425 int WtIdx = ResTy.getVectorNumElements() + 1;
2427 for (unsigned i = 0; i < Indices.size(); i += 2) {
2428 if (Indices[i] != -1 && Indices[i] != WsIdx)
2430 if (Indices[i+1] != -1 && Indices[i+1] != WtIdx)
2436 return DAG.getNode(MipsISD::ILVOD, SDLoc(Op), ResTy, Op->getOperand(0),
2440 // Lower VECTOR_SHUFFLE into ILVL (if possible).
2442 // ILVL interleaves consecutive elements from the left half of each vector.
2444 // It is possible to lower into ILVL when the mask takes the form:
2445 // <0, n, 1, n+1, 2, n+2, ...>
2446 // where n is the number of elements in the vector.
2448 // When undef's appear in the mask they are treated as if they were whatever
2449 // value is necessary in order to fit the above form.
2450 static SDValue lowerVECTOR_SHUFFLE_ILVL(SDValue Op, EVT ResTy,
2451 SmallVector<int, 16> Indices,
2452 SelectionDAG &DAG) {
2453 assert ((Indices.size() % 2) == 0);
2455 int WtIdx = ResTy.getVectorNumElements();
2457 for (unsigned i = 0; i < Indices.size(); i += 2) {
2458 if (Indices[i] != -1 && Indices[i] != WsIdx)
2460 if (Indices[i+1] != -1 && Indices[i+1] != WtIdx)
2466 return DAG.getNode(MipsISD::ILVL, SDLoc(Op), ResTy, Op->getOperand(0),
2470 // Lower VECTOR_SHUFFLE into ILVR (if possible).
2472 // ILVR interleaves consecutive elements from the right half of each vector.
2474 // It is possible to lower into ILVR when the mask takes the form:
2475 // <x, n+x, x+1, n+x+1, x+2, n+x+2, ...>
2476 // where n is the number of elements in the vector and x is half n.
2478 // When undef's appear in the mask they are treated as if they were whatever
2479 // value is necessary in order to fit the above form.
2480 static SDValue lowerVECTOR_SHUFFLE_ILVR(SDValue Op, EVT ResTy,
2481 SmallVector<int, 16> Indices,
2482 SelectionDAG &DAG) {
2483 assert ((Indices.size() % 2) == 0);
2484 unsigned NumElts = ResTy.getVectorNumElements();
2485 int WsIdx = NumElts / 2;
2486 int WtIdx = NumElts + NumElts / 2;
2488 for (unsigned i = 0; i < Indices.size(); i += 2) {
2489 if (Indices[i] != -1 && Indices[i] != WsIdx)
2491 if (Indices[i+1] != -1 && Indices[i+1] != WtIdx)
2497 return DAG.getNode(MipsISD::ILVR, SDLoc(Op), ResTy, Op->getOperand(0),
2501 // Lower VECTOR_SHUFFLE into PCKEV (if possible).
2503 // PCKEV copies the even elements of each vector into the result vector.
2505 // It is possible to lower into PCKEV when the mask takes the form:
2506 // <0, 2, 4, ..., n, n+2, n+4, ...>
2507 // where n is the number of elements in the vector.
2509 // When undef's appear in the mask they are treated as if they were whatever
2510 // value is necessary in order to fit the above form.
2511 static SDValue lowerVECTOR_SHUFFLE_PCKEV(SDValue Op, EVT ResTy,
2512 SmallVector<int, 16> Indices,
2513 SelectionDAG &DAG) {
2514 assert ((Indices.size() % 2) == 0);
2517 for (unsigned i = 0; i < Indices.size(); ++i) {
2518 if (Indices[i] != -1 && Indices[i] != Idx)
2523 return DAG.getNode(MipsISD::PCKEV, SDLoc(Op), ResTy, Op->getOperand(0),
2527 // Lower VECTOR_SHUFFLE into PCKOD (if possible).
2529 // PCKOD copies the odd elements of each vector into the result vector.
2531 // It is possible to lower into PCKOD when the mask takes the form:
2532 // <1, 3, 5, ..., n+1, n+3, n+5, ...>
2533 // where n is the number of elements in the vector.
2535 // When undef's appear in the mask they are treated as if they were whatever
2536 // value is necessary in order to fit the above form.
2537 static SDValue lowerVECTOR_SHUFFLE_PCKOD(SDValue Op, EVT ResTy,
2538 SmallVector<int, 16> Indices,
2539 SelectionDAG &DAG) {
2540 assert ((Indices.size() % 2) == 0);
2543 for (unsigned i = 0; i < Indices.size(); ++i) {
2544 if (Indices[i] != -1 && Indices[i] != Idx)
2549 return DAG.getNode(MipsISD::PCKOD, SDLoc(Op), ResTy, Op->getOperand(0),
2553 // Lower VECTOR_SHUFFLE into VSHF.
2555 // This mostly consists of converting the shuffle indices in Indices into a
2556 // BUILD_VECTOR and adding it as an operand to the resulting VSHF. There is
2557 // also code to eliminate unused operands of the VECTOR_SHUFFLE. For example,
2558 // if the type is v8i16 and all the indices are less than 8 then the second
2559 // operand is unused and can be replaced with anything. We choose to replace it
2560 // with the used operand since this reduces the number of instructions overall.
2561 static SDValue lowerVECTOR_SHUFFLE_VSHF(SDValue Op, EVT ResTy,
2562 SmallVector<int, 16> Indices,
2563 SelectionDAG &DAG) {
2564 SmallVector<SDValue, 16> Ops;
2567 EVT MaskVecTy = ResTy.changeVectorElementTypeToInteger();
2568 EVT MaskEltTy = MaskVecTy.getVectorElementType();
2569 bool Using1stVec = false;
2570 bool Using2ndVec = false;
2572 int ResTyNumElts = ResTy.getVectorNumElements();
2574 for (int i = 0; i < ResTyNumElts; ++i) {
2575 // Idx == -1 means UNDEF
2576 int Idx = Indices[i];
2578 if (0 <= Idx && Idx < ResTyNumElts)
2580 if (ResTyNumElts <= Idx && Idx < ResTyNumElts * 2)
2584 for (SmallVector<int, 16>::iterator I = Indices.begin(); I != Indices.end();
2586 Ops.push_back(DAG.getTargetConstant(*I, MaskEltTy));
2588 SDValue MaskVec = DAG.getNode(ISD::BUILD_VECTOR, DL, MaskVecTy, Ops);
2590 if (Using1stVec && Using2ndVec) {
2591 Op0 = Op->getOperand(0);
2592 Op1 = Op->getOperand(1);
2593 } else if (Using1stVec)
2594 Op0 = Op1 = Op->getOperand(0);
2595 else if (Using2ndVec)
2596 Op0 = Op1 = Op->getOperand(1);
2598 llvm_unreachable("shuffle vector mask references neither vector operand?");
2600 // VECTOR_SHUFFLE concatenates the vectors in an vectorwise fashion.
2601 // <0b00, 0b01> + <0b10, 0b11> -> <0b00, 0b01, 0b10, 0b11>
2602 // VSHF concatenates the vectors in a bitwise fashion:
2603 // <0b00, 0b01> + <0b10, 0b11> ->
2604 // 0b0100 + 0b1110 -> 0b01001110
2605 // <0b10, 0b11, 0b00, 0b01>
2606 // We must therefore swap the operands to get the correct result.
2607 return DAG.getNode(MipsISD::VSHF, DL, ResTy, MaskVec, Op1, Op0);
2610 // Lower VECTOR_SHUFFLE into one of a number of instructions depending on the
2611 // indices in the shuffle.
2612 SDValue MipsSETargetLowering::lowerVECTOR_SHUFFLE(SDValue Op,
2613 SelectionDAG &DAG) const {
2614 ShuffleVectorSDNode *Node = cast<ShuffleVectorSDNode>(Op);
2615 EVT ResTy = Op->getValueType(0);
2617 if (!ResTy.is128BitVector())
2620 int ResTyNumElts = ResTy.getVectorNumElements();
2621 SmallVector<int, 16> Indices;
2623 for (int i = 0; i < ResTyNumElts; ++i)
2624 Indices.push_back(Node->getMaskElt(i));
2626 SDValue Result = lowerVECTOR_SHUFFLE_SHF(Op, ResTy, Indices, DAG);
2627 if (Result.getNode())
2629 Result = lowerVECTOR_SHUFFLE_ILVEV(Op, ResTy, Indices, DAG);
2630 if (Result.getNode())
2632 Result = lowerVECTOR_SHUFFLE_ILVOD(Op, ResTy, Indices, DAG);
2633 if (Result.getNode())
2635 Result = lowerVECTOR_SHUFFLE_ILVL(Op, ResTy, Indices, DAG);
2636 if (Result.getNode())
2638 Result = lowerVECTOR_SHUFFLE_ILVR(Op, ResTy, Indices, DAG);
2639 if (Result.getNode())
2641 Result = lowerVECTOR_SHUFFLE_PCKEV(Op, ResTy, Indices, DAG);
2642 if (Result.getNode())
2644 Result = lowerVECTOR_SHUFFLE_PCKOD(Op, ResTy, Indices, DAG);
2645 if (Result.getNode())
2647 return lowerVECTOR_SHUFFLE_VSHF(Op, ResTy, Indices, DAG);
2650 MachineBasicBlock * MipsSETargetLowering::
2651 emitBPOSGE32(MachineInstr *MI, MachineBasicBlock *BB) const{
2653 // bposge32_pseudo $vr0
2663 // $vr0 = phi($vr2, $fbb, $vr1, $tbb)
2665 MachineRegisterInfo &RegInfo = BB->getParent()->getRegInfo();
2666 const TargetInstrInfo *TII = getTargetMachine().getInstrInfo();
2667 const TargetRegisterClass *RC = &Mips::GPR32RegClass;
2668 DebugLoc DL = MI->getDebugLoc();
2669 const BasicBlock *LLVM_BB = BB->getBasicBlock();
2670 MachineFunction::iterator It = std::next(MachineFunction::iterator(BB));
2671 MachineFunction *F = BB->getParent();
2672 MachineBasicBlock *FBB = F->CreateMachineBasicBlock(LLVM_BB);
2673 MachineBasicBlock *TBB = F->CreateMachineBasicBlock(LLVM_BB);
2674 MachineBasicBlock *Sink = F->CreateMachineBasicBlock(LLVM_BB);
2677 F->insert(It, Sink);
2679 // Transfer the remainder of BB and its successor edges to Sink.
2680 Sink->splice(Sink->begin(), BB, std::next(MachineBasicBlock::iterator(MI)),
2682 Sink->transferSuccessorsAndUpdatePHIs(BB);
2685 BB->addSuccessor(FBB);
2686 BB->addSuccessor(TBB);
2687 FBB->addSuccessor(Sink);
2688 TBB->addSuccessor(Sink);
2690 // Insert the real bposge32 instruction to $BB.
2691 BuildMI(BB, DL, TII->get(Mips::BPOSGE32)).addMBB(TBB);
2694 unsigned VR2 = RegInfo.createVirtualRegister(RC);
2695 BuildMI(*FBB, FBB->end(), DL, TII->get(Mips::ADDiu), VR2)
2696 .addReg(Mips::ZERO).addImm(0);
2697 BuildMI(*FBB, FBB->end(), DL, TII->get(Mips::B)).addMBB(Sink);
2700 unsigned VR1 = RegInfo.createVirtualRegister(RC);
2701 BuildMI(*TBB, TBB->end(), DL, TII->get(Mips::ADDiu), VR1)
2702 .addReg(Mips::ZERO).addImm(1);
2704 // Insert phi function to $Sink.
2705 BuildMI(*Sink, Sink->begin(), DL, TII->get(Mips::PHI),
2706 MI->getOperand(0).getReg())
2707 .addReg(VR2).addMBB(FBB).addReg(VR1).addMBB(TBB);
2709 MI->eraseFromParent(); // The pseudo instruction is gone now.
2713 MachineBasicBlock * MipsSETargetLowering::
2714 emitMSACBranchPseudo(MachineInstr *MI, MachineBasicBlock *BB,
2715 unsigned BranchOp) const{
2717 // vany_nonzero $rd, $ws
2728 // $rd = phi($rd1, $fbb, $rd2, $tbb)
2730 MachineRegisterInfo &RegInfo = BB->getParent()->getRegInfo();
2731 const TargetInstrInfo *TII = getTargetMachine().getInstrInfo();
2732 const TargetRegisterClass *RC = &Mips::GPR32RegClass;
2733 DebugLoc DL = MI->getDebugLoc();
2734 const BasicBlock *LLVM_BB = BB->getBasicBlock();
2735 MachineFunction::iterator It = std::next(MachineFunction::iterator(BB));
2736 MachineFunction *F = BB->getParent();
2737 MachineBasicBlock *FBB = F->CreateMachineBasicBlock(LLVM_BB);
2738 MachineBasicBlock *TBB = F->CreateMachineBasicBlock(LLVM_BB);
2739 MachineBasicBlock *Sink = F->CreateMachineBasicBlock(LLVM_BB);
2742 F->insert(It, Sink);
2744 // Transfer the remainder of BB and its successor edges to Sink.
2745 Sink->splice(Sink->begin(), BB, std::next(MachineBasicBlock::iterator(MI)),
2747 Sink->transferSuccessorsAndUpdatePHIs(BB);
2750 BB->addSuccessor(FBB);
2751 BB->addSuccessor(TBB);
2752 FBB->addSuccessor(Sink);
2753 TBB->addSuccessor(Sink);
2755 // Insert the real bnz.b instruction to $BB.
2756 BuildMI(BB, DL, TII->get(BranchOp))
2757 .addReg(MI->getOperand(1).getReg())
2761 unsigned RD1 = RegInfo.createVirtualRegister(RC);
2762 BuildMI(*FBB, FBB->end(), DL, TII->get(Mips::ADDiu), RD1)
2763 .addReg(Mips::ZERO).addImm(0);
2764 BuildMI(*FBB, FBB->end(), DL, TII->get(Mips::B)).addMBB(Sink);
2767 unsigned RD2 = RegInfo.createVirtualRegister(RC);
2768 BuildMI(*TBB, TBB->end(), DL, TII->get(Mips::ADDiu), RD2)
2769 .addReg(Mips::ZERO).addImm(1);
2771 // Insert phi function to $Sink.
2772 BuildMI(*Sink, Sink->begin(), DL, TII->get(Mips::PHI),
2773 MI->getOperand(0).getReg())
2774 .addReg(RD1).addMBB(FBB).addReg(RD2).addMBB(TBB);
2776 MI->eraseFromParent(); // The pseudo instruction is gone now.
2780 // Emit the COPY_FW pseudo instruction.
2782 // copy_fw_pseudo $fd, $ws, n
2784 // copy_u_w $rt, $ws, $n
2787 // When n is zero, the equivalent operation can be performed with (potentially)
2788 // zero instructions due to register overlaps. This optimization is never valid
2789 // for lane 1 because it would require FR=0 mode which isn't supported by MSA.
2790 MachineBasicBlock * MipsSETargetLowering::
2791 emitCOPY_FW(MachineInstr *MI, MachineBasicBlock *BB) const{
2792 const TargetInstrInfo *TII = getTargetMachine().getInstrInfo();
2793 MachineRegisterInfo &RegInfo = BB->getParent()->getRegInfo();
2794 DebugLoc DL = MI->getDebugLoc();
2795 unsigned Fd = MI->getOperand(0).getReg();
2796 unsigned Ws = MI->getOperand(1).getReg();
2797 unsigned Lane = MI->getOperand(2).getImm();
2800 BuildMI(*BB, MI, DL, TII->get(Mips::COPY), Fd).addReg(Ws, 0, Mips::sub_lo);
2802 unsigned Wt = RegInfo.createVirtualRegister(&Mips::MSA128WRegClass);
2804 BuildMI(*BB, MI, DL, TII->get(Mips::SPLATI_W), Wt).addReg(Ws).addImm(Lane);
2805 BuildMI(*BB, MI, DL, TII->get(Mips::COPY), Fd).addReg(Wt, 0, Mips::sub_lo);
2808 MI->eraseFromParent(); // The pseudo instruction is gone now.
2812 // Emit the COPY_FD pseudo instruction.
2814 // copy_fd_pseudo $fd, $ws, n
2816 // splati.d $wt, $ws, $n
2817 // copy $fd, $wt:sub_64
2819 // When n is zero, the equivalent operation can be performed with (potentially)
2820 // zero instructions due to register overlaps. This optimization is always
2821 // valid because FR=1 mode which is the only supported mode in MSA.
2822 MachineBasicBlock * MipsSETargetLowering::
2823 emitCOPY_FD(MachineInstr *MI, MachineBasicBlock *BB) const{
2824 assert(Subtarget->isFP64bit());
2826 const TargetInstrInfo *TII = getTargetMachine().getInstrInfo();
2827 MachineRegisterInfo &RegInfo = BB->getParent()->getRegInfo();
2828 unsigned Fd = MI->getOperand(0).getReg();
2829 unsigned Ws = MI->getOperand(1).getReg();
2830 unsigned Lane = MI->getOperand(2).getImm() * 2;
2831 DebugLoc DL = MI->getDebugLoc();
2834 BuildMI(*BB, MI, DL, TII->get(Mips::COPY), Fd).addReg(Ws, 0, Mips::sub_64);
2836 unsigned Wt = RegInfo.createVirtualRegister(&Mips::MSA128DRegClass);
2838 BuildMI(*BB, MI, DL, TII->get(Mips::SPLATI_D), Wt).addReg(Ws).addImm(1);
2839 BuildMI(*BB, MI, DL, TII->get(Mips::COPY), Fd).addReg(Wt, 0, Mips::sub_64);
2842 MI->eraseFromParent(); // The pseudo instruction is gone now.
2846 // Emit the INSERT_FW pseudo instruction.
2848 // insert_fw_pseudo $wd, $wd_in, $n, $fs
2850 // subreg_to_reg $wt:sub_lo, $fs
2851 // insve_w $wd[$n], $wd_in, $wt[0]
2853 MipsSETargetLowering::emitINSERT_FW(MachineInstr *MI,
2854 MachineBasicBlock *BB) const {
2855 const TargetInstrInfo *TII = getTargetMachine().getInstrInfo();
2856 MachineRegisterInfo &RegInfo = BB->getParent()->getRegInfo();
2857 DebugLoc DL = MI->getDebugLoc();
2858 unsigned Wd = MI->getOperand(0).getReg();
2859 unsigned Wd_in = MI->getOperand(1).getReg();
2860 unsigned Lane = MI->getOperand(2).getImm();
2861 unsigned Fs = MI->getOperand(3).getReg();
2862 unsigned Wt = RegInfo.createVirtualRegister(&Mips::MSA128WRegClass);
2864 BuildMI(*BB, MI, DL, TII->get(Mips::SUBREG_TO_REG), Wt)
2867 .addImm(Mips::sub_lo);
2868 BuildMI(*BB, MI, DL, TII->get(Mips::INSVE_W), Wd)
2874 MI->eraseFromParent(); // The pseudo instruction is gone now.
2878 // Emit the INSERT_FD pseudo instruction.
2880 // insert_fd_pseudo $wd, $fs, n
2882 // subreg_to_reg $wt:sub_64, $fs
2883 // insve_d $wd[$n], $wd_in, $wt[0]
2885 MipsSETargetLowering::emitINSERT_FD(MachineInstr *MI,
2886 MachineBasicBlock *BB) const {
2887 assert(Subtarget->isFP64bit());
2889 const TargetInstrInfo *TII = getTargetMachine().getInstrInfo();
2890 MachineRegisterInfo &RegInfo = BB->getParent()->getRegInfo();
2891 DebugLoc DL = MI->getDebugLoc();
2892 unsigned Wd = MI->getOperand(0).getReg();
2893 unsigned Wd_in = MI->getOperand(1).getReg();
2894 unsigned Lane = MI->getOperand(2).getImm();
2895 unsigned Fs = MI->getOperand(3).getReg();
2896 unsigned Wt = RegInfo.createVirtualRegister(&Mips::MSA128DRegClass);
2898 BuildMI(*BB, MI, DL, TII->get(Mips::SUBREG_TO_REG), Wt)
2901 .addImm(Mips::sub_64);
2902 BuildMI(*BB, MI, DL, TII->get(Mips::INSVE_D), Wd)
2908 MI->eraseFromParent(); // The pseudo instruction is gone now.
2912 // Emit the INSERT_([BHWD]|F[WD])_VIDX pseudo instruction.
2915 // (INSERT_([BHWD]|F[WD])_PSEUDO $wd, $wd_in, $n, $rs)
2917 // (SLL $lanetmp1, $lane, <log2size)
2918 // (SLD_B $wdtmp1, $wd_in, $wd_in, $lanetmp1)
2919 // (INSERT_[BHWD], $wdtmp2, $wdtmp1, 0, $rs)
2920 // (NEG $lanetmp2, $lanetmp1)
2921 // (SLD_B $wd, $wdtmp2, $wdtmp2, $lanetmp2)
2923 // For floating point:
2924 // (INSERT_([BHWD]|F[WD])_PSEUDO $wd, $wd_in, $n, $fs)
2926 // (SUBREG_TO_REG $wt, $fs, <subreg>)
2927 // (SLL $lanetmp1, $lane, <log2size)
2928 // (SLD_B $wdtmp1, $wd_in, $wd_in, $lanetmp1)
2929 // (INSVE_[WD], $wdtmp2, 0, $wdtmp1, 0)
2930 // (NEG $lanetmp2, $lanetmp1)
2931 // (SLD_B $wd, $wdtmp2, $wdtmp2, $lanetmp2)
2933 MipsSETargetLowering::emitINSERT_DF_VIDX(MachineInstr *MI,
2934 MachineBasicBlock *BB,
2935 unsigned EltSizeInBytes,
2937 const TargetInstrInfo *TII = getTargetMachine().getInstrInfo();
2938 MachineRegisterInfo &RegInfo = BB->getParent()->getRegInfo();
2939 DebugLoc DL = MI->getDebugLoc();
2940 unsigned Wd = MI->getOperand(0).getReg();
2941 unsigned SrcVecReg = MI->getOperand(1).getReg();
2942 unsigned LaneReg = MI->getOperand(2).getReg();
2943 unsigned SrcValReg = MI->getOperand(3).getReg();
2945 const TargetRegisterClass *VecRC = nullptr;
2946 const TargetRegisterClass *GPRRC = isGP64bit() ? &Mips::GPR64RegClass
2947 : &Mips::GPR32RegClass;
2948 unsigned EltLog2Size;
2949 unsigned InsertOp = 0;
2950 unsigned InsveOp = 0;
2951 switch (EltSizeInBytes) {
2953 llvm_unreachable("Unexpected size");
2956 InsertOp = Mips::INSERT_B;
2957 InsveOp = Mips::INSVE_B;
2958 VecRC = &Mips::MSA128BRegClass;
2962 InsertOp = Mips::INSERT_H;
2963 InsveOp = Mips::INSVE_H;
2964 VecRC = &Mips::MSA128HRegClass;
2968 InsertOp = Mips::INSERT_W;
2969 InsveOp = Mips::INSVE_W;
2970 VecRC = &Mips::MSA128WRegClass;
2974 InsertOp = Mips::INSERT_D;
2975 InsveOp = Mips::INSVE_D;
2976 VecRC = &Mips::MSA128DRegClass;
2981 unsigned Wt = RegInfo.createVirtualRegister(VecRC);
2982 BuildMI(*BB, MI, DL, TII->get(Mips::SUBREG_TO_REG), Wt)
2985 .addImm(EltSizeInBytes == 8 ? Mips::sub_64 : Mips::sub_lo);
2989 // Convert the lane index into a byte index
2990 if (EltSizeInBytes != 1) {
2991 unsigned LaneTmp1 = RegInfo.createVirtualRegister(GPRRC);
2992 BuildMI(*BB, MI, DL, TII->get(Mips::SLL), LaneTmp1)
2994 .addImm(EltLog2Size);
2998 // Rotate bytes around so that the desired lane is element zero
2999 unsigned WdTmp1 = RegInfo.createVirtualRegister(VecRC);
3000 BuildMI(*BB, MI, DL, TII->get(Mips::SLD_B), WdTmp1)
3005 unsigned WdTmp2 = RegInfo.createVirtualRegister(VecRC);
3007 // Use insve.df to insert to element zero
3008 BuildMI(*BB, MI, DL, TII->get(InsveOp), WdTmp2)
3014 // Use insert.df to insert to element zero
3015 BuildMI(*BB, MI, DL, TII->get(InsertOp), WdTmp2)
3021 // Rotate elements the rest of the way for a full rotation.
3022 // sld.df inteprets $rt modulo the number of columns so we only need to negate
3023 // the lane index to do this.
3024 unsigned LaneTmp2 = RegInfo.createVirtualRegister(GPRRC);
3025 BuildMI(*BB, MI, DL, TII->get(Mips::SUB), LaneTmp2)
3028 BuildMI(*BB, MI, DL, TII->get(Mips::SLD_B), Wd)
3033 MI->eraseFromParent(); // The pseudo instruction is gone now.
3037 // Emit the FILL_FW pseudo instruction.
3039 // fill_fw_pseudo $wd, $fs
3041 // implicit_def $wt1
3042 // insert_subreg $wt2:subreg_lo, $wt1, $fs
3043 // splati.w $wd, $wt2[0]
3045 MipsSETargetLowering::emitFILL_FW(MachineInstr *MI,
3046 MachineBasicBlock *BB) const {
3047 const TargetInstrInfo *TII = getTargetMachine().getInstrInfo();
3048 MachineRegisterInfo &RegInfo = BB->getParent()->getRegInfo();
3049 DebugLoc DL = MI->getDebugLoc();
3050 unsigned Wd = MI->getOperand(0).getReg();
3051 unsigned Fs = MI->getOperand(1).getReg();
3052 unsigned Wt1 = RegInfo.createVirtualRegister(&Mips::MSA128WRegClass);
3053 unsigned Wt2 = RegInfo.createVirtualRegister(&Mips::MSA128WRegClass);
3055 BuildMI(*BB, MI, DL, TII->get(Mips::IMPLICIT_DEF), Wt1);
3056 BuildMI(*BB, MI, DL, TII->get(Mips::INSERT_SUBREG), Wt2)
3059 .addImm(Mips::sub_lo);
3060 BuildMI(*BB, MI, DL, TII->get(Mips::SPLATI_W), Wd).addReg(Wt2).addImm(0);
3062 MI->eraseFromParent(); // The pseudo instruction is gone now.
3066 // Emit the FILL_FD pseudo instruction.
3068 // fill_fd_pseudo $wd, $fs
3070 // implicit_def $wt1
3071 // insert_subreg $wt2:subreg_64, $wt1, $fs
3072 // splati.d $wd, $wt2[0]
3074 MipsSETargetLowering::emitFILL_FD(MachineInstr *MI,
3075 MachineBasicBlock *BB) const {
3076 assert(Subtarget->isFP64bit());
3078 const TargetInstrInfo *TII = getTargetMachine().getInstrInfo();
3079 MachineRegisterInfo &RegInfo = BB->getParent()->getRegInfo();
3080 DebugLoc DL = MI->getDebugLoc();
3081 unsigned Wd = MI->getOperand(0).getReg();
3082 unsigned Fs = MI->getOperand(1).getReg();
3083 unsigned Wt1 = RegInfo.createVirtualRegister(&Mips::MSA128DRegClass);
3084 unsigned Wt2 = RegInfo.createVirtualRegister(&Mips::MSA128DRegClass);
3086 BuildMI(*BB, MI, DL, TII->get(Mips::IMPLICIT_DEF), Wt1);
3087 BuildMI(*BB, MI, DL, TII->get(Mips::INSERT_SUBREG), Wt2)
3090 .addImm(Mips::sub_64);
3091 BuildMI(*BB, MI, DL, TII->get(Mips::SPLATI_D), Wd).addReg(Wt2).addImm(0);
3093 MI->eraseFromParent(); // The pseudo instruction is gone now.
3097 // Emit the FEXP2_W_1 pseudo instructions.
3099 // fexp2_w_1_pseudo $wd, $wt
3102 // fexp2.w $wd, $ws, $wt
3104 MipsSETargetLowering::emitFEXP2_W_1(MachineInstr *MI,
3105 MachineBasicBlock *BB) const {
3106 const TargetInstrInfo *TII = getTargetMachine().getInstrInfo();
3107 MachineRegisterInfo &RegInfo = BB->getParent()->getRegInfo();
3108 const TargetRegisterClass *RC = &Mips::MSA128WRegClass;
3109 unsigned Ws1 = RegInfo.createVirtualRegister(RC);
3110 unsigned Ws2 = RegInfo.createVirtualRegister(RC);
3111 DebugLoc DL = MI->getDebugLoc();
3113 // Splat 1.0 into a vector
3114 BuildMI(*BB, MI, DL, TII->get(Mips::LDI_W), Ws1).addImm(1);
3115 BuildMI(*BB, MI, DL, TII->get(Mips::FFINT_U_W), Ws2).addReg(Ws1);
3117 // Emit 1.0 * fexp2(Wt)
3118 BuildMI(*BB, MI, DL, TII->get(Mips::FEXP2_W), MI->getOperand(0).getReg())
3120 .addReg(MI->getOperand(1).getReg());
3122 MI->eraseFromParent(); // The pseudo instruction is gone now.
3126 // Emit the FEXP2_D_1 pseudo instructions.
3128 // fexp2_d_1_pseudo $wd, $wt
3131 // fexp2.d $wd, $ws, $wt
3133 MipsSETargetLowering::emitFEXP2_D_1(MachineInstr *MI,
3134 MachineBasicBlock *BB) const {
3135 const TargetInstrInfo *TII = getTargetMachine().getInstrInfo();
3136 MachineRegisterInfo &RegInfo = BB->getParent()->getRegInfo();
3137 const TargetRegisterClass *RC = &Mips::MSA128DRegClass;
3138 unsigned Ws1 = RegInfo.createVirtualRegister(RC);
3139 unsigned Ws2 = RegInfo.createVirtualRegister(RC);
3140 DebugLoc DL = MI->getDebugLoc();
3142 // Splat 1.0 into a vector
3143 BuildMI(*BB, MI, DL, TII->get(Mips::LDI_D), Ws1).addImm(1);
3144 BuildMI(*BB, MI, DL, TII->get(Mips::FFINT_U_D), Ws2).addReg(Ws1);
3146 // Emit 1.0 * fexp2(Wt)
3147 BuildMI(*BB, MI, DL, TII->get(Mips::FEXP2_D), MI->getOperand(0).getReg())
3149 .addReg(MI->getOperand(1).getReg());
3151 MI->eraseFromParent(); // The pseudo instruction is gone now.