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 "MipsMachineFunction.h"
15 #include "MipsRegisterInfo.h"
16 #include "MipsTargetMachine.h"
17 #include "llvm/CodeGen/MachineInstrBuilder.h"
18 #include "llvm/CodeGen/MachineRegisterInfo.h"
19 #include "llvm/IR/Intrinsics.h"
20 #include "llvm/Support/CommandLine.h"
21 #include "llvm/Support/Debug.h"
22 #include "llvm/Support/raw_ostream.h"
23 #include "llvm/Target/TargetInstrInfo.h"
27 #define DEBUG_TYPE "mips-isel"
30 EnableMipsTailCalls("enable-mips-tail-calls", cl::Hidden,
31 cl::desc("MIPS: Enable tail calls."), cl::init(false));
33 static cl::opt<bool> NoDPLoadStore("mno-ldc1-sdc1", cl::init(false),
34 cl::desc("Expand double precision loads and "
35 "stores to their single precision "
38 MipsSETargetLowering::MipsSETargetLowering(const MipsTargetMachine &TM,
39 const MipsSubtarget &STI)
40 : MipsTargetLowering(TM, STI) {
41 // Set up the register classes
42 addRegisterClass(MVT::i32, &Mips::GPR32RegClass);
44 if (Subtarget.isGP64bit())
45 addRegisterClass(MVT::i64, &Mips::GPR64RegClass);
47 if (Subtarget.hasDSP() || Subtarget.hasMSA()) {
48 // Expand all truncating stores and extending loads.
49 for (MVT VT0 : MVT::vector_valuetypes()) {
50 for (MVT VT1 : MVT::vector_valuetypes()) {
51 setTruncStoreAction(VT0, VT1, Expand);
52 setLoadExtAction(ISD::SEXTLOAD, VT0, VT1, Expand);
53 setLoadExtAction(ISD::ZEXTLOAD, VT0, VT1, Expand);
54 setLoadExtAction(ISD::EXTLOAD, VT0, VT1, Expand);
59 if (Subtarget.hasDSP()) {
60 MVT::SimpleValueType VecTys[2] = {MVT::v2i16, MVT::v4i8};
62 for (unsigned i = 0; i < array_lengthof(VecTys); ++i) {
63 addRegisterClass(VecTys[i], &Mips::DSPRRegClass);
65 // Expand all builtin opcodes.
66 for (unsigned Opc = 0; Opc < ISD::BUILTIN_OP_END; ++Opc)
67 setOperationAction(Opc, VecTys[i], Expand);
69 setOperationAction(ISD::ADD, VecTys[i], Legal);
70 setOperationAction(ISD::SUB, VecTys[i], Legal);
71 setOperationAction(ISD::LOAD, VecTys[i], Legal);
72 setOperationAction(ISD::STORE, VecTys[i], Legal);
73 setOperationAction(ISD::BITCAST, VecTys[i], Legal);
76 setTargetDAGCombine(ISD::SHL);
77 setTargetDAGCombine(ISD::SRA);
78 setTargetDAGCombine(ISD::SRL);
79 setTargetDAGCombine(ISD::SETCC);
80 setTargetDAGCombine(ISD::VSELECT);
83 if (Subtarget.hasDSPR2())
84 setOperationAction(ISD::MUL, MVT::v2i16, Legal);
86 if (Subtarget.hasMSA()) {
87 addMSAIntType(MVT::v16i8, &Mips::MSA128BRegClass);
88 addMSAIntType(MVT::v8i16, &Mips::MSA128HRegClass);
89 addMSAIntType(MVT::v4i32, &Mips::MSA128WRegClass);
90 addMSAIntType(MVT::v2i64, &Mips::MSA128DRegClass);
91 addMSAFloatType(MVT::v8f16, &Mips::MSA128HRegClass);
92 addMSAFloatType(MVT::v4f32, &Mips::MSA128WRegClass);
93 addMSAFloatType(MVT::v2f64, &Mips::MSA128DRegClass);
95 setTargetDAGCombine(ISD::AND);
96 setTargetDAGCombine(ISD::OR);
97 setTargetDAGCombine(ISD::SRA);
98 setTargetDAGCombine(ISD::VSELECT);
99 setTargetDAGCombine(ISD::XOR);
102 if (!Subtarget.useSoftFloat()) {
103 addRegisterClass(MVT::f32, &Mips::FGR32RegClass);
105 // When dealing with single precision only, use libcalls
106 if (!Subtarget.isSingleFloat()) {
107 if (Subtarget.isFP64bit())
108 addRegisterClass(MVT::f64, &Mips::FGR64RegClass);
110 addRegisterClass(MVT::f64, &Mips::AFGR64RegClass);
114 setOperationAction(ISD::SMUL_LOHI, MVT::i32, Custom);
115 setOperationAction(ISD::UMUL_LOHI, MVT::i32, Custom);
116 setOperationAction(ISD::MULHS, MVT::i32, Custom);
117 setOperationAction(ISD::MULHU, MVT::i32, Custom);
119 if (Subtarget.hasCnMips())
120 setOperationAction(ISD::MUL, MVT::i64, Legal);
121 else if (Subtarget.isGP64bit())
122 setOperationAction(ISD::MUL, MVT::i64, Custom);
124 if (Subtarget.isGP64bit()) {
125 setOperationAction(ISD::SMUL_LOHI, MVT::i64, Custom);
126 setOperationAction(ISD::UMUL_LOHI, MVT::i64, Custom);
127 setOperationAction(ISD::MULHS, MVT::i64, Custom);
128 setOperationAction(ISD::MULHU, MVT::i64, Custom);
129 setOperationAction(ISD::SDIVREM, MVT::i64, Custom);
130 setOperationAction(ISD::UDIVREM, MVT::i64, Custom);
133 setOperationAction(ISD::INTRINSIC_WO_CHAIN, MVT::i64, Custom);
134 setOperationAction(ISD::INTRINSIC_W_CHAIN, MVT::i64, Custom);
136 setOperationAction(ISD::SDIVREM, MVT::i32, Custom);
137 setOperationAction(ISD::UDIVREM, MVT::i32, 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 if (Subtarget.hasMips32r6()) {
156 // MIPS32r6 replaces the accumulator-based multiplies with a three register
158 setOperationAction(ISD::SMUL_LOHI, MVT::i32, Expand);
159 setOperationAction(ISD::UMUL_LOHI, MVT::i32, Expand);
160 setOperationAction(ISD::MUL, MVT::i32, Legal);
161 setOperationAction(ISD::MULHS, MVT::i32, Legal);
162 setOperationAction(ISD::MULHU, MVT::i32, Legal);
164 // MIPS32r6 replaces the accumulator-based division/remainder with separate
165 // three register division and remainder instructions.
166 setOperationAction(ISD::SDIVREM, MVT::i32, Expand);
167 setOperationAction(ISD::UDIVREM, MVT::i32, Expand);
168 setOperationAction(ISD::SDIV, MVT::i32, Legal);
169 setOperationAction(ISD::UDIV, MVT::i32, Legal);
170 setOperationAction(ISD::SREM, MVT::i32, Legal);
171 setOperationAction(ISD::UREM, MVT::i32, Legal);
173 // MIPS32r6 replaces conditional moves with an equivalent that removes the
174 // need for three GPR read ports.
175 setOperationAction(ISD::SETCC, MVT::i32, Legal);
176 setOperationAction(ISD::SELECT, MVT::i32, Legal);
177 setOperationAction(ISD::SELECT_CC, MVT::i32, Expand);
179 setOperationAction(ISD::SETCC, MVT::f32, Legal);
180 setOperationAction(ISD::SELECT, MVT::f32, Legal);
181 setOperationAction(ISD::SELECT_CC, MVT::f32, Expand);
183 assert(Subtarget.isFP64bit() && "FR=1 is required for MIPS32r6");
184 setOperationAction(ISD::SETCC, MVT::f64, Legal);
185 setOperationAction(ISD::SELECT, MVT::f64, Legal);
186 setOperationAction(ISD::SELECT_CC, MVT::f64, Expand);
188 setOperationAction(ISD::BRCOND, MVT::Other, Legal);
190 // Floating point > and >= are supported via < and <=
191 setCondCodeAction(ISD::SETOGE, MVT::f32, Expand);
192 setCondCodeAction(ISD::SETOGT, MVT::f32, Expand);
193 setCondCodeAction(ISD::SETUGE, MVT::f32, Expand);
194 setCondCodeAction(ISD::SETUGT, MVT::f32, Expand);
196 setCondCodeAction(ISD::SETOGE, MVT::f64, Expand);
197 setCondCodeAction(ISD::SETOGT, MVT::f64, Expand);
198 setCondCodeAction(ISD::SETUGE, MVT::f64, Expand);
199 setCondCodeAction(ISD::SETUGT, MVT::f64, Expand);
202 if (Subtarget.hasMips64r6()) {
203 // MIPS64r6 replaces the accumulator-based multiplies with a three register
205 setOperationAction(ISD::SMUL_LOHI, MVT::i64, Expand);
206 setOperationAction(ISD::UMUL_LOHI, MVT::i64, Expand);
207 setOperationAction(ISD::MUL, MVT::i64, Legal);
208 setOperationAction(ISD::MULHS, MVT::i64, Legal);
209 setOperationAction(ISD::MULHU, MVT::i64, Legal);
211 // MIPS32r6 replaces the accumulator-based division/remainder with separate
212 // three register division and remainder instructions.
213 setOperationAction(ISD::SDIVREM, MVT::i64, Expand);
214 setOperationAction(ISD::UDIVREM, MVT::i64, Expand);
215 setOperationAction(ISD::SDIV, MVT::i64, Legal);
216 setOperationAction(ISD::UDIV, MVT::i64, Legal);
217 setOperationAction(ISD::SREM, MVT::i64, Legal);
218 setOperationAction(ISD::UREM, MVT::i64, Legal);
220 // MIPS64r6 replaces conditional moves with an equivalent that removes the
221 // need for three GPR read ports.
222 setOperationAction(ISD::SETCC, MVT::i64, Legal);
223 setOperationAction(ISD::SELECT, MVT::i64, Legal);
224 setOperationAction(ISD::SELECT_CC, MVT::i64, Expand);
227 computeRegisterProperties(Subtarget.getRegisterInfo());
230 const MipsTargetLowering *
231 llvm::createMipsSETargetLowering(const MipsTargetMachine &TM,
232 const MipsSubtarget &STI) {
233 return new MipsSETargetLowering(TM, STI);
236 const TargetRegisterClass *
237 MipsSETargetLowering::getRepRegClassFor(MVT VT) const {
238 if (VT == MVT::Untyped)
239 return Subtarget.hasDSP() ? &Mips::ACC64DSPRegClass : &Mips::ACC64RegClass;
241 return TargetLowering::getRepRegClassFor(VT);
244 // Enable MSA support for the given integer type and Register class.
245 void MipsSETargetLowering::
246 addMSAIntType(MVT::SimpleValueType Ty, const TargetRegisterClass *RC) {
247 addRegisterClass(Ty, RC);
249 // Expand all builtin opcodes.
250 for (unsigned Opc = 0; Opc < ISD::BUILTIN_OP_END; ++Opc)
251 setOperationAction(Opc, Ty, Expand);
253 setOperationAction(ISD::BITCAST, Ty, Legal);
254 setOperationAction(ISD::LOAD, Ty, Legal);
255 setOperationAction(ISD::STORE, Ty, Legal);
256 setOperationAction(ISD::EXTRACT_VECTOR_ELT, Ty, Custom);
257 setOperationAction(ISD::INSERT_VECTOR_ELT, Ty, Legal);
258 setOperationAction(ISD::BUILD_VECTOR, Ty, Custom);
260 setOperationAction(ISD::ADD, Ty, Legal);
261 setOperationAction(ISD::AND, Ty, Legal);
262 setOperationAction(ISD::CTLZ, Ty, Legal);
263 setOperationAction(ISD::CTPOP, Ty, Legal);
264 setOperationAction(ISD::MUL, Ty, Legal);
265 setOperationAction(ISD::OR, Ty, Legal);
266 setOperationAction(ISD::SDIV, Ty, Legal);
267 setOperationAction(ISD::SREM, Ty, Legal);
268 setOperationAction(ISD::SHL, Ty, Legal);
269 setOperationAction(ISD::SRA, Ty, Legal);
270 setOperationAction(ISD::SRL, Ty, Legal);
271 setOperationAction(ISD::SUB, Ty, Legal);
272 setOperationAction(ISD::UDIV, Ty, Legal);
273 setOperationAction(ISD::UREM, Ty, Legal);
274 setOperationAction(ISD::VECTOR_SHUFFLE, Ty, Custom);
275 setOperationAction(ISD::VSELECT, Ty, Legal);
276 setOperationAction(ISD::XOR, Ty, Legal);
278 if (Ty == MVT::v4i32 || Ty == MVT::v2i64) {
279 setOperationAction(ISD::FP_TO_SINT, Ty, Legal);
280 setOperationAction(ISD::FP_TO_UINT, Ty, Legal);
281 setOperationAction(ISD::SINT_TO_FP, Ty, Legal);
282 setOperationAction(ISD::UINT_TO_FP, Ty, Legal);
285 setOperationAction(ISD::SETCC, Ty, Legal);
286 setCondCodeAction(ISD::SETNE, Ty, Expand);
287 setCondCodeAction(ISD::SETGE, Ty, Expand);
288 setCondCodeAction(ISD::SETGT, Ty, Expand);
289 setCondCodeAction(ISD::SETUGE, Ty, Expand);
290 setCondCodeAction(ISD::SETUGT, Ty, Expand);
293 // Enable MSA support for the given floating-point type and Register class.
294 void MipsSETargetLowering::
295 addMSAFloatType(MVT::SimpleValueType Ty, const TargetRegisterClass *RC) {
296 addRegisterClass(Ty, RC);
298 // Expand all builtin opcodes.
299 for (unsigned Opc = 0; Opc < ISD::BUILTIN_OP_END; ++Opc)
300 setOperationAction(Opc, Ty, Expand);
302 setOperationAction(ISD::LOAD, Ty, Legal);
303 setOperationAction(ISD::STORE, Ty, Legal);
304 setOperationAction(ISD::BITCAST, Ty, Legal);
305 setOperationAction(ISD::EXTRACT_VECTOR_ELT, Ty, Legal);
306 setOperationAction(ISD::INSERT_VECTOR_ELT, Ty, Legal);
307 setOperationAction(ISD::BUILD_VECTOR, Ty, Custom);
309 if (Ty != MVT::v8f16) {
310 setOperationAction(ISD::FABS, Ty, Legal);
311 setOperationAction(ISD::FADD, Ty, Legal);
312 setOperationAction(ISD::FDIV, Ty, Legal);
313 setOperationAction(ISD::FEXP2, Ty, Legal);
314 setOperationAction(ISD::FLOG2, Ty, Legal);
315 setOperationAction(ISD::FMA, Ty, Legal);
316 setOperationAction(ISD::FMUL, Ty, Legal);
317 setOperationAction(ISD::FRINT, Ty, Legal);
318 setOperationAction(ISD::FSQRT, Ty, Legal);
319 setOperationAction(ISD::FSUB, Ty, Legal);
320 setOperationAction(ISD::VSELECT, Ty, Legal);
322 setOperationAction(ISD::SETCC, Ty, Legal);
323 setCondCodeAction(ISD::SETOGE, Ty, Expand);
324 setCondCodeAction(ISD::SETOGT, Ty, Expand);
325 setCondCodeAction(ISD::SETUGE, Ty, Expand);
326 setCondCodeAction(ISD::SETUGT, Ty, Expand);
327 setCondCodeAction(ISD::SETGE, Ty, Expand);
328 setCondCodeAction(ISD::SETGT, Ty, Expand);
333 MipsSETargetLowering::allowsMisalignedMemoryAccesses(EVT VT,
337 MVT::SimpleValueType SVT = VT.getSimpleVT().SimpleTy;
339 if (Subtarget.systemSupportsUnalignedAccess()) {
340 // MIPS32r6/MIPS64r6 is required to support unaligned access. It's
341 // implementation defined whether this is handled by hardware, software, or
342 // a hybrid of the two but it's expected that most implementations will
343 // handle the majority of cases in hardware.
360 SDValue MipsSETargetLowering::LowerOperation(SDValue Op,
361 SelectionDAG &DAG) const {
362 switch(Op.getOpcode()) {
363 case ISD::LOAD: return lowerLOAD(Op, DAG);
364 case ISD::STORE: return lowerSTORE(Op, DAG);
365 case ISD::SMUL_LOHI: return lowerMulDiv(Op, MipsISD::Mult, true, true, DAG);
366 case ISD::UMUL_LOHI: return lowerMulDiv(Op, MipsISD::Multu, true, true, DAG);
367 case ISD::MULHS: return lowerMulDiv(Op, MipsISD::Mult, false, true, DAG);
368 case ISD::MULHU: return lowerMulDiv(Op, MipsISD::Multu, false, true, DAG);
369 case ISD::MUL: return lowerMulDiv(Op, MipsISD::Mult, true, false, DAG);
370 case ISD::SDIVREM: return lowerMulDiv(Op, MipsISD::DivRem, true, true, DAG);
371 case ISD::UDIVREM: return lowerMulDiv(Op, MipsISD::DivRemU, true, true,
373 case ISD::INTRINSIC_WO_CHAIN: return lowerINTRINSIC_WO_CHAIN(Op, DAG);
374 case ISD::INTRINSIC_W_CHAIN: return lowerINTRINSIC_W_CHAIN(Op, DAG);
375 case ISD::INTRINSIC_VOID: return lowerINTRINSIC_VOID(Op, DAG);
376 case ISD::EXTRACT_VECTOR_ELT: return lowerEXTRACT_VECTOR_ELT(Op, DAG);
377 case ISD::BUILD_VECTOR: return lowerBUILD_VECTOR(Op, DAG);
378 case ISD::VECTOR_SHUFFLE: return lowerVECTOR_SHUFFLE(Op, DAG);
381 return MipsTargetLowering::LowerOperation(Op, DAG);
385 // Transforms a subgraph in CurDAG if the following pattern is found:
386 // (addc multLo, Lo0), (adde multHi, Hi0),
388 // multHi/Lo: product of multiplication
389 // Lo0: initial value of Lo register
390 // Hi0: initial value of Hi register
391 // Return true if pattern matching was successful.
392 static bool selectMADD(SDNode *ADDENode, SelectionDAG *CurDAG) {
393 // ADDENode's second operand must be a flag output of an ADDC node in order
394 // for the matching to be successful.
395 SDNode *ADDCNode = ADDENode->getOperand(2).getNode();
397 if (ADDCNode->getOpcode() != ISD::ADDC)
400 SDValue MultHi = ADDENode->getOperand(0);
401 SDValue MultLo = ADDCNode->getOperand(0);
402 SDNode *MultNode = MultHi.getNode();
403 unsigned MultOpc = MultHi.getOpcode();
405 // MultHi and MultLo must be generated by the same node,
406 if (MultLo.getNode() != MultNode)
409 // and it must be a multiplication.
410 if (MultOpc != ISD::SMUL_LOHI && MultOpc != ISD::UMUL_LOHI)
413 // MultLo amd MultHi must be the first and second output of MultNode
415 if (MultHi.getResNo() != 1 || MultLo.getResNo() != 0)
418 // Transform this to a MADD only if ADDENode and ADDCNode are the only users
419 // of the values of MultNode, in which case MultNode will be removed in later
421 // If there exist users other than ADDENode or ADDCNode, this function returns
422 // here, which will result in MultNode being mapped to a single MULT
423 // instruction node rather than a pair of MULT and MADD instructions being
425 if (!MultHi.hasOneUse() || !MultLo.hasOneUse())
430 // Initialize accumulator.
431 SDValue ACCIn = CurDAG->getNode(MipsISD::MTLOHI, DL, MVT::Untyped,
432 ADDCNode->getOperand(1),
433 ADDENode->getOperand(1));
435 // create MipsMAdd(u) node
436 MultOpc = MultOpc == ISD::UMUL_LOHI ? MipsISD::MAddu : MipsISD::MAdd;
438 SDValue MAdd = CurDAG->getNode(MultOpc, DL, MVT::Untyped,
439 MultNode->getOperand(0),// Factor 0
440 MultNode->getOperand(1),// Factor 1
443 // replace uses of adde and addc here
444 if (!SDValue(ADDCNode, 0).use_empty()) {
445 SDValue LoOut = CurDAG->getNode(MipsISD::MFLO, DL, MVT::i32, MAdd);
446 CurDAG->ReplaceAllUsesOfValueWith(SDValue(ADDCNode, 0), LoOut);
448 if (!SDValue(ADDENode, 0).use_empty()) {
449 SDValue HiOut = CurDAG->getNode(MipsISD::MFHI, DL, MVT::i32, MAdd);
450 CurDAG->ReplaceAllUsesOfValueWith(SDValue(ADDENode, 0), HiOut);
457 // Transforms a subgraph in CurDAG if the following pattern is found:
458 // (addc Lo0, multLo), (sube Hi0, multHi),
460 // multHi/Lo: product of multiplication
461 // Lo0: initial value of Lo register
462 // Hi0: initial value of Hi register
463 // Return true if pattern matching was successful.
464 static bool selectMSUB(SDNode *SUBENode, SelectionDAG *CurDAG) {
465 // SUBENode's second operand must be a flag output of an SUBC node in order
466 // for the matching to be successful.
467 SDNode *SUBCNode = SUBENode->getOperand(2).getNode();
469 if (SUBCNode->getOpcode() != ISD::SUBC)
472 SDValue MultHi = SUBENode->getOperand(1);
473 SDValue MultLo = SUBCNode->getOperand(1);
474 SDNode *MultNode = MultHi.getNode();
475 unsigned MultOpc = MultHi.getOpcode();
477 // MultHi and MultLo must be generated by the same node,
478 if (MultLo.getNode() != MultNode)
481 // and it must be a multiplication.
482 if (MultOpc != ISD::SMUL_LOHI && MultOpc != ISD::UMUL_LOHI)
485 // MultLo amd MultHi must be the first and second output of MultNode
487 if (MultHi.getResNo() != 1 || MultLo.getResNo() != 0)
490 // Transform this to a MSUB only if SUBENode and SUBCNode are the only users
491 // of the values of MultNode, in which case MultNode will be removed in later
493 // If there exist users other than SUBENode or SUBCNode, this function returns
494 // here, which will result in MultNode being mapped to a single MULT
495 // instruction node rather than a pair of MULT and MSUB instructions being
497 if (!MultHi.hasOneUse() || !MultLo.hasOneUse())
502 // Initialize accumulator.
503 SDValue ACCIn = CurDAG->getNode(MipsISD::MTLOHI, DL, MVT::Untyped,
504 SUBCNode->getOperand(0),
505 SUBENode->getOperand(0));
507 // create MipsSub(u) node
508 MultOpc = MultOpc == ISD::UMUL_LOHI ? MipsISD::MSubu : MipsISD::MSub;
510 SDValue MSub = CurDAG->getNode(MultOpc, DL, MVT::Glue,
511 MultNode->getOperand(0),// Factor 0
512 MultNode->getOperand(1),// Factor 1
515 // replace uses of sube and subc here
516 if (!SDValue(SUBCNode, 0).use_empty()) {
517 SDValue LoOut = CurDAG->getNode(MipsISD::MFLO, DL, MVT::i32, MSub);
518 CurDAG->ReplaceAllUsesOfValueWith(SDValue(SUBCNode, 0), LoOut);
520 if (!SDValue(SUBENode, 0).use_empty()) {
521 SDValue HiOut = CurDAG->getNode(MipsISD::MFHI, DL, MVT::i32, MSub);
522 CurDAG->ReplaceAllUsesOfValueWith(SDValue(SUBENode, 0), HiOut);
528 static SDValue performADDECombine(SDNode *N, SelectionDAG &DAG,
529 TargetLowering::DAGCombinerInfo &DCI,
530 const MipsSubtarget &Subtarget) {
531 if (DCI.isBeforeLegalize())
534 if (Subtarget.hasMips32() && !Subtarget.hasMips32r6() &&
535 N->getValueType(0) == MVT::i32 && selectMADD(N, &DAG))
536 return SDValue(N, 0);
541 // Fold zero extensions into MipsISD::VEXTRACT_[SZ]EXT_ELT
543 // Performs the following transformations:
544 // - Changes MipsISD::VEXTRACT_[SZ]EXT_ELT to zero extension if its
545 // sign/zero-extension is completely overwritten by the new one performed by
547 // - Removes redundant zero extensions performed by an ISD::AND.
548 static SDValue performANDCombine(SDNode *N, SelectionDAG &DAG,
549 TargetLowering::DAGCombinerInfo &DCI,
550 const MipsSubtarget &Subtarget) {
551 if (!Subtarget.hasMSA())
554 SDValue Op0 = N->getOperand(0);
555 SDValue Op1 = N->getOperand(1);
556 unsigned Op0Opcode = Op0->getOpcode();
558 // (and (MipsVExtract[SZ]Ext $a, $b, $c), imm:$d)
559 // where $d + 1 == 2^n and n == 32
560 // or $d + 1 == 2^n and n <= 32 and ZExt
561 // -> (MipsVExtractZExt $a, $b, $c)
562 if (Op0Opcode == MipsISD::VEXTRACT_SEXT_ELT ||
563 Op0Opcode == MipsISD::VEXTRACT_ZEXT_ELT) {
564 ConstantSDNode *Mask = dyn_cast<ConstantSDNode>(Op1);
569 int32_t Log2IfPositive = (Mask->getAPIntValue() + 1).exactLogBase2();
571 if (Log2IfPositive <= 0)
572 return SDValue(); // Mask+1 is not a power of 2
574 SDValue Op0Op2 = Op0->getOperand(2);
575 EVT ExtendTy = cast<VTSDNode>(Op0Op2)->getVT();
576 unsigned ExtendTySize = ExtendTy.getSizeInBits();
577 unsigned Log2 = Log2IfPositive;
579 if ((Op0Opcode == MipsISD::VEXTRACT_ZEXT_ELT && Log2 >= ExtendTySize) ||
580 Log2 == ExtendTySize) {
581 SDValue Ops[] = { Op0->getOperand(0), Op0->getOperand(1), Op0Op2 };
582 return DAG.getNode(MipsISD::VEXTRACT_ZEXT_ELT, SDLoc(Op0),
584 makeArrayRef(Ops, Op0->getNumOperands()));
591 // Determine if the specified node is a constant vector splat.
593 // Returns true and sets Imm if:
594 // * N is a ISD::BUILD_VECTOR representing a constant splat
596 // This function is quite similar to MipsSEDAGToDAGISel::selectVSplat. The
597 // differences are that it assumes the MSA has already been checked and the
598 // arbitrary requirement for a maximum of 32-bit integers isn't applied (and
599 // must not be in order for binsri.d to be selectable).
600 static bool isVSplat(SDValue N, APInt &Imm, bool IsLittleEndian) {
601 BuildVectorSDNode *Node = dyn_cast<BuildVectorSDNode>(N.getNode());
606 APInt SplatValue, SplatUndef;
607 unsigned SplatBitSize;
610 if (!Node->isConstantSplat(SplatValue, SplatUndef, SplatBitSize, HasAnyUndefs,
619 // Test whether the given node is an all-ones build_vector.
620 static bool isVectorAllOnes(SDValue N) {
621 // Look through bitcasts. Endianness doesn't matter because we are looking
622 // for an all-ones value.
623 if (N->getOpcode() == ISD::BITCAST)
624 N = N->getOperand(0);
626 BuildVectorSDNode *BVN = dyn_cast<BuildVectorSDNode>(N);
631 APInt SplatValue, SplatUndef;
632 unsigned SplatBitSize;
635 // Endianness doesn't matter in this context because we are looking for
636 // an all-ones value.
637 if (BVN->isConstantSplat(SplatValue, SplatUndef, SplatBitSize, HasAnyUndefs))
638 return SplatValue.isAllOnesValue();
643 // Test whether N is the bitwise inverse of OfNode.
644 static bool isBitwiseInverse(SDValue N, SDValue OfNode) {
645 if (N->getOpcode() != ISD::XOR)
648 if (isVectorAllOnes(N->getOperand(0)))
649 return N->getOperand(1) == OfNode;
651 if (isVectorAllOnes(N->getOperand(1)))
652 return N->getOperand(0) == OfNode;
657 // Perform combines where ISD::OR is the root node.
659 // Performs the following transformations:
660 // - (or (and $a, $mask), (and $b, $inv_mask)) => (vselect $mask, $a, $b)
661 // where $inv_mask is the bitwise inverse of $mask and the 'or' has a 128-bit
663 static SDValue performORCombine(SDNode *N, SelectionDAG &DAG,
664 TargetLowering::DAGCombinerInfo &DCI,
665 const MipsSubtarget &Subtarget) {
666 if (!Subtarget.hasMSA())
669 EVT Ty = N->getValueType(0);
671 if (!Ty.is128BitVector())
674 SDValue Op0 = N->getOperand(0);
675 SDValue Op1 = N->getOperand(1);
677 if (Op0->getOpcode() == ISD::AND && Op1->getOpcode() == ISD::AND) {
678 SDValue Op0Op0 = Op0->getOperand(0);
679 SDValue Op0Op1 = Op0->getOperand(1);
680 SDValue Op1Op0 = Op1->getOperand(0);
681 SDValue Op1Op1 = Op1->getOperand(1);
682 bool IsLittleEndian = !Subtarget.isLittle();
684 SDValue IfSet, IfClr, Cond;
685 bool IsConstantMask = false;
688 // If Op0Op0 is an appropriate mask, try to find it's inverse in either
689 // Op1Op0, or Op1Op1. Keep track of the Cond, IfSet, and IfClr nodes, while
691 // IfClr will be set if we find a valid match.
692 if (isVSplat(Op0Op0, Mask, IsLittleEndian)) {
696 if (isVSplat(Op1Op0, InvMask, IsLittleEndian) &&
697 Mask.getBitWidth() == InvMask.getBitWidth() && Mask == ~InvMask)
699 else if (isVSplat(Op1Op1, InvMask, IsLittleEndian) &&
700 Mask.getBitWidth() == InvMask.getBitWidth() && Mask == ~InvMask)
703 IsConstantMask = true;
706 // If IfClr is not yet set, and Op0Op1 is an appropriate mask, try the same
707 // thing again using this mask.
708 // IfClr will be set if we find a valid match.
709 if (!IfClr.getNode() && isVSplat(Op0Op1, Mask, IsLittleEndian)) {
713 if (isVSplat(Op1Op0, InvMask, IsLittleEndian) &&
714 Mask.getBitWidth() == InvMask.getBitWidth() && Mask == ~InvMask)
716 else if (isVSplat(Op1Op1, InvMask, IsLittleEndian) &&
717 Mask.getBitWidth() == InvMask.getBitWidth() && Mask == ~InvMask)
720 IsConstantMask = true;
723 // If IfClr is not yet set, try looking for a non-constant match.
724 // IfClr will be set if we find a valid match amongst the eight
726 if (!IfClr.getNode()) {
727 if (isBitwiseInverse(Op0Op0, Op1Op0)) {
731 } else if (isBitwiseInverse(Op0Op1, Op1Op0)) {
735 } else if (isBitwiseInverse(Op0Op0, Op1Op1)) {
739 } else if (isBitwiseInverse(Op0Op1, Op1Op1)) {
743 } else if (isBitwiseInverse(Op1Op0, Op0Op0)) {
747 } else if (isBitwiseInverse(Op1Op1, Op0Op0)) {
751 } else if (isBitwiseInverse(Op1Op0, Op0Op1)) {
755 } else if (isBitwiseInverse(Op1Op1, Op0Op1)) {
762 // At this point, IfClr will be set if we have a valid match.
763 if (!IfClr.getNode())
766 assert(Cond.getNode() && IfSet.getNode());
768 // Fold degenerate cases.
769 if (IsConstantMask) {
770 if (Mask.isAllOnesValue())
776 // Transform the DAG into an equivalent VSELECT.
777 return DAG.getNode(ISD::VSELECT, SDLoc(N), Ty, Cond, IfSet, IfClr);
783 static SDValue performSUBECombine(SDNode *N, SelectionDAG &DAG,
784 TargetLowering::DAGCombinerInfo &DCI,
785 const MipsSubtarget &Subtarget) {
786 if (DCI.isBeforeLegalize())
789 if (Subtarget.hasMips32() && N->getValueType(0) == MVT::i32 &&
791 return SDValue(N, 0);
796 static SDValue genConstMult(SDValue X, uint64_t C, SDLoc DL, EVT VT,
797 EVT ShiftTy, SelectionDAG &DAG) {
798 // Clear the upper (64 - VT.sizeInBits) bits.
799 C &= ((uint64_t)-1) >> (64 - VT.getSizeInBits());
803 return DAG.getConstant(0, DL, VT);
809 // If c is power of 2, return (shl x, log2(c)).
810 if (isPowerOf2_64(C))
811 return DAG.getNode(ISD::SHL, DL, VT, X,
812 DAG.getConstant(Log2_64(C), DL, ShiftTy));
814 unsigned Log2Ceil = Log2_64_Ceil(C);
815 uint64_t Floor = 1LL << Log2_64(C);
816 uint64_t Ceil = Log2Ceil == 64 ? 0LL : 1LL << Log2Ceil;
818 // If |c - floor_c| <= |c - ceil_c|,
819 // where floor_c = pow(2, floor(log2(c))) and ceil_c = pow(2, ceil(log2(c))),
820 // return (add constMult(x, floor_c), constMult(x, c - floor_c)).
821 if (C - Floor <= Ceil - C) {
822 SDValue Op0 = genConstMult(X, Floor, DL, VT, ShiftTy, DAG);
823 SDValue Op1 = genConstMult(X, C - Floor, DL, VT, ShiftTy, DAG);
824 return DAG.getNode(ISD::ADD, DL, VT, Op0, Op1);
827 // If |c - floor_c| > |c - ceil_c|,
828 // return (sub constMult(x, ceil_c), constMult(x, ceil_c - c)).
829 SDValue Op0 = genConstMult(X, Ceil, DL, VT, ShiftTy, DAG);
830 SDValue Op1 = genConstMult(X, Ceil - C, DL, VT, ShiftTy, DAG);
831 return DAG.getNode(ISD::SUB, DL, VT, Op0, Op1);
834 static SDValue performMULCombine(SDNode *N, SelectionDAG &DAG,
835 const TargetLowering::DAGCombinerInfo &DCI,
836 const MipsSETargetLowering *TL) {
837 EVT VT = N->getValueType(0);
839 if (ConstantSDNode *C = dyn_cast<ConstantSDNode>(N->getOperand(1)))
841 return genConstMult(N->getOperand(0), C->getZExtValue(), SDLoc(N),
842 VT, TL->getScalarShiftAmountTy(VT), DAG);
844 return SDValue(N, 0);
847 static SDValue performDSPShiftCombine(unsigned Opc, SDNode *N, EVT Ty,
849 const MipsSubtarget &Subtarget) {
850 // See if this is a vector splat immediate node.
851 APInt SplatValue, SplatUndef;
852 unsigned SplatBitSize;
854 unsigned EltSize = Ty.getVectorElementType().getSizeInBits();
855 BuildVectorSDNode *BV = dyn_cast<BuildVectorSDNode>(N->getOperand(1));
857 if (!Subtarget.hasDSP())
861 !BV->isConstantSplat(SplatValue, SplatUndef, SplatBitSize, HasAnyUndefs,
862 EltSize, !Subtarget.isLittle()) ||
863 (SplatBitSize != EltSize) ||
864 (SplatValue.getZExtValue() >= EltSize))
868 return DAG.getNode(Opc, DL, Ty, N->getOperand(0),
869 DAG.getConstant(SplatValue.getZExtValue(), DL, MVT::i32));
872 static SDValue performSHLCombine(SDNode *N, SelectionDAG &DAG,
873 TargetLowering::DAGCombinerInfo &DCI,
874 const MipsSubtarget &Subtarget) {
875 EVT Ty = N->getValueType(0);
877 if ((Ty != MVT::v2i16) && (Ty != MVT::v4i8))
880 return performDSPShiftCombine(MipsISD::SHLL_DSP, N, Ty, DAG, Subtarget);
883 // Fold sign-extensions into MipsISD::VEXTRACT_[SZ]EXT_ELT for MSA and fold
884 // constant splats into MipsISD::SHRA_DSP for DSPr2.
886 // Performs the following transformations:
887 // - Changes MipsISD::VEXTRACT_[SZ]EXT_ELT to sign extension if its
888 // sign/zero-extension is completely overwritten by the new one performed by
889 // the ISD::SRA and ISD::SHL nodes.
890 // - Removes redundant sign extensions performed by an ISD::SRA and ISD::SHL
893 // See performDSPShiftCombine for more information about the transformation
895 static SDValue performSRACombine(SDNode *N, SelectionDAG &DAG,
896 TargetLowering::DAGCombinerInfo &DCI,
897 const MipsSubtarget &Subtarget) {
898 EVT Ty = N->getValueType(0);
900 if (Subtarget.hasMSA()) {
901 SDValue Op0 = N->getOperand(0);
902 SDValue Op1 = N->getOperand(1);
904 // (sra (shl (MipsVExtract[SZ]Ext $a, $b, $c), imm:$d), imm:$d)
905 // where $d + sizeof($c) == 32
906 // or $d + sizeof($c) <= 32 and SExt
907 // -> (MipsVExtractSExt $a, $b, $c)
908 if (Op0->getOpcode() == ISD::SHL && Op1 == Op0->getOperand(1)) {
909 SDValue Op0Op0 = Op0->getOperand(0);
910 ConstantSDNode *ShAmount = dyn_cast<ConstantSDNode>(Op1);
915 if (Op0Op0->getOpcode() != MipsISD::VEXTRACT_SEXT_ELT &&
916 Op0Op0->getOpcode() != MipsISD::VEXTRACT_ZEXT_ELT)
919 EVT ExtendTy = cast<VTSDNode>(Op0Op0->getOperand(2))->getVT();
920 unsigned TotalBits = ShAmount->getZExtValue() + ExtendTy.getSizeInBits();
922 if (TotalBits == 32 ||
923 (Op0Op0->getOpcode() == MipsISD::VEXTRACT_SEXT_ELT &&
925 SDValue Ops[] = { Op0Op0->getOperand(0), Op0Op0->getOperand(1),
926 Op0Op0->getOperand(2) };
927 return DAG.getNode(MipsISD::VEXTRACT_SEXT_ELT, SDLoc(Op0Op0),
929 makeArrayRef(Ops, Op0Op0->getNumOperands()));
934 if ((Ty != MVT::v2i16) && ((Ty != MVT::v4i8) || !Subtarget.hasDSPR2()))
937 return performDSPShiftCombine(MipsISD::SHRA_DSP, N, Ty, DAG, Subtarget);
941 static SDValue performSRLCombine(SDNode *N, SelectionDAG &DAG,
942 TargetLowering::DAGCombinerInfo &DCI,
943 const MipsSubtarget &Subtarget) {
944 EVT Ty = N->getValueType(0);
946 if (((Ty != MVT::v2i16) || !Subtarget.hasDSPR2()) && (Ty != MVT::v4i8))
949 return performDSPShiftCombine(MipsISD::SHRL_DSP, N, Ty, DAG, Subtarget);
952 static bool isLegalDSPCondCode(EVT Ty, ISD::CondCode CC) {
953 bool IsV216 = (Ty == MVT::v2i16);
957 case ISD::SETNE: return true;
961 case ISD::SETGE: return IsV216;
965 case ISD::SETUGE: return !IsV216;
966 default: return false;
970 static SDValue performSETCCCombine(SDNode *N, SelectionDAG &DAG) {
971 EVT Ty = N->getValueType(0);
973 if ((Ty != MVT::v2i16) && (Ty != MVT::v4i8))
976 if (!isLegalDSPCondCode(Ty, cast<CondCodeSDNode>(N->getOperand(2))->get()))
979 return DAG.getNode(MipsISD::SETCC_DSP, SDLoc(N), Ty, N->getOperand(0),
980 N->getOperand(1), N->getOperand(2));
983 static SDValue performVSELECTCombine(SDNode *N, SelectionDAG &DAG) {
984 EVT Ty = N->getValueType(0);
986 if (Ty.is128BitVector() && Ty.isInteger()) {
987 // Try the following combines:
988 // (vselect (setcc $a, $b, SETLT), $b, $a)) -> (vsmax $a, $b)
989 // (vselect (setcc $a, $b, SETLE), $b, $a)) -> (vsmax $a, $b)
990 // (vselect (setcc $a, $b, SETLT), $a, $b)) -> (vsmin $a, $b)
991 // (vselect (setcc $a, $b, SETLE), $a, $b)) -> (vsmin $a, $b)
992 // (vselect (setcc $a, $b, SETULT), $b, $a)) -> (vumax $a, $b)
993 // (vselect (setcc $a, $b, SETULE), $b, $a)) -> (vumax $a, $b)
994 // (vselect (setcc $a, $b, SETULT), $a, $b)) -> (vumin $a, $b)
995 // (vselect (setcc $a, $b, SETULE), $a, $b)) -> (vumin $a, $b)
996 // SETGT/SETGE/SETUGT/SETUGE variants of these will show up initially but
997 // will be expanded to equivalent SETLT/SETLE/SETULT/SETULE versions by the
999 SDValue Op0 = N->getOperand(0);
1001 if (Op0->getOpcode() != ISD::SETCC)
1004 ISD::CondCode CondCode = cast<CondCodeSDNode>(Op0->getOperand(2))->get();
1007 if (CondCode == ISD::SETLT || CondCode == ISD::SETLE)
1009 else if (CondCode == ISD::SETULT || CondCode == ISD::SETULE)
1014 SDValue Op1 = N->getOperand(1);
1015 SDValue Op2 = N->getOperand(2);
1016 SDValue Op0Op0 = Op0->getOperand(0);
1017 SDValue Op0Op1 = Op0->getOperand(1);
1019 if (Op1 == Op0Op0 && Op2 == Op0Op1)
1020 return DAG.getNode(Signed ? MipsISD::VSMIN : MipsISD::VUMIN, SDLoc(N),
1022 else if (Op1 == Op0Op1 && Op2 == Op0Op0)
1023 return DAG.getNode(Signed ? MipsISD::VSMAX : MipsISD::VUMAX, SDLoc(N),
1025 } else if ((Ty == MVT::v2i16) || (Ty == MVT::v4i8)) {
1026 SDValue SetCC = N->getOperand(0);
1028 if (SetCC.getOpcode() != MipsISD::SETCC_DSP)
1031 return DAG.getNode(MipsISD::SELECT_CC_DSP, SDLoc(N), Ty,
1032 SetCC.getOperand(0), SetCC.getOperand(1),
1033 N->getOperand(1), N->getOperand(2), SetCC.getOperand(2));
1039 static SDValue performXORCombine(SDNode *N, SelectionDAG &DAG,
1040 const MipsSubtarget &Subtarget) {
1041 EVT Ty = N->getValueType(0);
1043 if (Subtarget.hasMSA() && Ty.is128BitVector() && Ty.isInteger()) {
1044 // Try the following combines:
1045 // (xor (or $a, $b), (build_vector allones))
1046 // (xor (or $a, $b), (bitcast (build_vector allones)))
1047 SDValue Op0 = N->getOperand(0);
1048 SDValue Op1 = N->getOperand(1);
1051 if (ISD::isBuildVectorAllOnes(Op0.getNode()))
1053 else if (ISD::isBuildVectorAllOnes(Op1.getNode()))
1058 if (NotOp->getOpcode() == ISD::OR)
1059 return DAG.getNode(MipsISD::VNOR, SDLoc(N), Ty, NotOp->getOperand(0),
1060 NotOp->getOperand(1));
1067 MipsSETargetLowering::PerformDAGCombine(SDNode *N, DAGCombinerInfo &DCI) const {
1068 SelectionDAG &DAG = DCI.DAG;
1071 switch (N->getOpcode()) {
1073 return performADDECombine(N, DAG, DCI, Subtarget);
1075 Val = performANDCombine(N, DAG, DCI, Subtarget);
1078 Val = performORCombine(N, DAG, DCI, Subtarget);
1081 return performSUBECombine(N, DAG, DCI, Subtarget);
1083 return performMULCombine(N, DAG, DCI, this);
1085 return performSHLCombine(N, DAG, DCI, Subtarget);
1087 return performSRACombine(N, DAG, DCI, Subtarget);
1089 return performSRLCombine(N, DAG, DCI, Subtarget);
1091 return performVSELECTCombine(N, DAG);
1093 Val = performXORCombine(N, DAG, Subtarget);
1096 Val = performSETCCCombine(N, DAG);
1100 if (Val.getNode()) {
1101 DEBUG(dbgs() << "\nMipsSE DAG Combine:\n";
1102 N->printrWithDepth(dbgs(), &DAG);
1103 dbgs() << "\n=> \n";
1104 Val.getNode()->printrWithDepth(dbgs(), &DAG);
1109 return MipsTargetLowering::PerformDAGCombine(N, DCI);
1113 MipsSETargetLowering::EmitInstrWithCustomInserter(MachineInstr *MI,
1114 MachineBasicBlock *BB) const {
1115 switch (MI->getOpcode()) {
1117 return MipsTargetLowering::EmitInstrWithCustomInserter(MI, BB);
1118 case Mips::BPOSGE32_PSEUDO:
1119 return emitBPOSGE32(MI, BB);
1120 case Mips::SNZ_B_PSEUDO:
1121 return emitMSACBranchPseudo(MI, BB, Mips::BNZ_B);
1122 case Mips::SNZ_H_PSEUDO:
1123 return emitMSACBranchPseudo(MI, BB, Mips::BNZ_H);
1124 case Mips::SNZ_W_PSEUDO:
1125 return emitMSACBranchPseudo(MI, BB, Mips::BNZ_W);
1126 case Mips::SNZ_D_PSEUDO:
1127 return emitMSACBranchPseudo(MI, BB, Mips::BNZ_D);
1128 case Mips::SNZ_V_PSEUDO:
1129 return emitMSACBranchPseudo(MI, BB, Mips::BNZ_V);
1130 case Mips::SZ_B_PSEUDO:
1131 return emitMSACBranchPseudo(MI, BB, Mips::BZ_B);
1132 case Mips::SZ_H_PSEUDO:
1133 return emitMSACBranchPseudo(MI, BB, Mips::BZ_H);
1134 case Mips::SZ_W_PSEUDO:
1135 return emitMSACBranchPseudo(MI, BB, Mips::BZ_W);
1136 case Mips::SZ_D_PSEUDO:
1137 return emitMSACBranchPseudo(MI, BB, Mips::BZ_D);
1138 case Mips::SZ_V_PSEUDO:
1139 return emitMSACBranchPseudo(MI, BB, Mips::BZ_V);
1140 case Mips::COPY_FW_PSEUDO:
1141 return emitCOPY_FW(MI, BB);
1142 case Mips::COPY_FD_PSEUDO:
1143 return emitCOPY_FD(MI, BB);
1144 case Mips::INSERT_FW_PSEUDO:
1145 return emitINSERT_FW(MI, BB);
1146 case Mips::INSERT_FD_PSEUDO:
1147 return emitINSERT_FD(MI, BB);
1148 case Mips::INSERT_B_VIDX_PSEUDO:
1149 case Mips::INSERT_B_VIDX64_PSEUDO:
1150 return emitINSERT_DF_VIDX(MI, BB, 1, false);
1151 case Mips::INSERT_H_VIDX_PSEUDO:
1152 case Mips::INSERT_H_VIDX64_PSEUDO:
1153 return emitINSERT_DF_VIDX(MI, BB, 2, false);
1154 case Mips::INSERT_W_VIDX_PSEUDO:
1155 case Mips::INSERT_W_VIDX64_PSEUDO:
1156 return emitINSERT_DF_VIDX(MI, BB, 4, false);
1157 case Mips::INSERT_D_VIDX_PSEUDO:
1158 case Mips::INSERT_D_VIDX64_PSEUDO:
1159 return emitINSERT_DF_VIDX(MI, BB, 8, false);
1160 case Mips::INSERT_FW_VIDX_PSEUDO:
1161 case Mips::INSERT_FW_VIDX64_PSEUDO:
1162 return emitINSERT_DF_VIDX(MI, BB, 4, true);
1163 case Mips::INSERT_FD_VIDX_PSEUDO:
1164 case Mips::INSERT_FD_VIDX64_PSEUDO:
1165 return emitINSERT_DF_VIDX(MI, BB, 8, true);
1166 case Mips::FILL_FW_PSEUDO:
1167 return emitFILL_FW(MI, BB);
1168 case Mips::FILL_FD_PSEUDO:
1169 return emitFILL_FD(MI, BB);
1170 case Mips::FEXP2_W_1_PSEUDO:
1171 return emitFEXP2_W_1(MI, BB);
1172 case Mips::FEXP2_D_1_PSEUDO:
1173 return emitFEXP2_D_1(MI, BB);
1177 bool MipsSETargetLowering::isEligibleForTailCallOptimization(
1178 const CCState &CCInfo, unsigned NextStackOffset,
1179 const MipsFunctionInfo &FI) const {
1180 if (!EnableMipsTailCalls)
1183 // Return false if either the callee or caller has a byval argument.
1184 if (CCInfo.getInRegsParamsCount() > 0 || FI.hasByvalArg())
1187 // Return true if the callee's argument area is no larger than the
1189 return NextStackOffset <= FI.getIncomingArgSize();
1192 void MipsSETargetLowering::
1193 getOpndList(SmallVectorImpl<SDValue> &Ops,
1194 std::deque< std::pair<unsigned, SDValue> > &RegsToPass,
1195 bool IsPICCall, bool GlobalOrExternal, bool InternalLinkage,
1196 bool IsCallReloc, CallLoweringInfo &CLI, SDValue Callee,
1197 SDValue Chain) const {
1198 Ops.push_back(Callee);
1199 MipsTargetLowering::getOpndList(Ops, RegsToPass, IsPICCall, GlobalOrExternal,
1200 InternalLinkage, IsCallReloc, CLI, Callee,
1204 SDValue MipsSETargetLowering::lowerLOAD(SDValue Op, SelectionDAG &DAG) const {
1205 LoadSDNode &Nd = *cast<LoadSDNode>(Op);
1207 if (Nd.getMemoryVT() != MVT::f64 || !NoDPLoadStore)
1208 return MipsTargetLowering::lowerLOAD(Op, DAG);
1210 // Replace a double precision load with two i32 loads and a buildpair64.
1212 SDValue Ptr = Nd.getBasePtr(), Chain = Nd.getChain();
1213 EVT PtrVT = Ptr.getValueType();
1215 // i32 load from lower address.
1216 SDValue Lo = DAG.getLoad(MVT::i32, DL, Chain, Ptr,
1217 MachinePointerInfo(), Nd.isVolatile(),
1218 Nd.isNonTemporal(), Nd.isInvariant(),
1221 // i32 load from higher address.
1222 Ptr = DAG.getNode(ISD::ADD, DL, PtrVT, Ptr, DAG.getConstant(4, DL, PtrVT));
1223 SDValue Hi = DAG.getLoad(MVT::i32, DL, Lo.getValue(1), Ptr,
1224 MachinePointerInfo(), Nd.isVolatile(),
1225 Nd.isNonTemporal(), Nd.isInvariant(),
1226 std::min(Nd.getAlignment(), 4U));
1228 if (!Subtarget.isLittle())
1231 SDValue BP = DAG.getNode(MipsISD::BuildPairF64, DL, MVT::f64, Lo, Hi);
1232 SDValue Ops[2] = {BP, Hi.getValue(1)};
1233 return DAG.getMergeValues(Ops, DL);
1236 SDValue MipsSETargetLowering::lowerSTORE(SDValue Op, SelectionDAG &DAG) const {
1237 StoreSDNode &Nd = *cast<StoreSDNode>(Op);
1239 if (Nd.getMemoryVT() != MVT::f64 || !NoDPLoadStore)
1240 return MipsTargetLowering::lowerSTORE(Op, DAG);
1242 // Replace a double precision store with two extractelement64s and i32 stores.
1244 SDValue Val = Nd.getValue(), Ptr = Nd.getBasePtr(), Chain = Nd.getChain();
1245 EVT PtrVT = Ptr.getValueType();
1246 SDValue Lo = DAG.getNode(MipsISD::ExtractElementF64, DL, MVT::i32,
1247 Val, DAG.getConstant(0, DL, MVT::i32));
1248 SDValue Hi = DAG.getNode(MipsISD::ExtractElementF64, DL, MVT::i32,
1249 Val, DAG.getConstant(1, DL, MVT::i32));
1251 if (!Subtarget.isLittle())
1254 // i32 store to lower address.
1255 Chain = DAG.getStore(Chain, DL, Lo, Ptr, MachinePointerInfo(),
1256 Nd.isVolatile(), Nd.isNonTemporal(), Nd.getAlignment(),
1259 // i32 store to higher address.
1260 Ptr = DAG.getNode(ISD::ADD, DL, PtrVT, Ptr, DAG.getConstant(4, DL, PtrVT));
1261 return DAG.getStore(Chain, DL, Hi, Ptr, MachinePointerInfo(),
1262 Nd.isVolatile(), Nd.isNonTemporal(),
1263 std::min(Nd.getAlignment(), 4U), Nd.getAAInfo());
1266 SDValue MipsSETargetLowering::lowerMulDiv(SDValue Op, unsigned NewOpc,
1267 bool HasLo, bool HasHi,
1268 SelectionDAG &DAG) const {
1269 // MIPS32r6/MIPS64r6 removed accumulator based multiplies.
1270 assert(!Subtarget.hasMips32r6());
1272 EVT Ty = Op.getOperand(0).getValueType();
1274 SDValue Mult = DAG.getNode(NewOpc, DL, MVT::Untyped,
1275 Op.getOperand(0), Op.getOperand(1));
1279 Lo = DAG.getNode(MipsISD::MFLO, DL, Ty, Mult);
1281 Hi = DAG.getNode(MipsISD::MFHI, DL, Ty, Mult);
1283 if (!HasLo || !HasHi)
1284 return HasLo ? Lo : Hi;
1286 SDValue Vals[] = { Lo, Hi };
1287 return DAG.getMergeValues(Vals, DL);
1291 static SDValue initAccumulator(SDValue In, SDLoc DL, SelectionDAG &DAG) {
1292 SDValue InLo = DAG.getNode(ISD::EXTRACT_ELEMENT, DL, MVT::i32, In,
1293 DAG.getConstant(0, DL, MVT::i32));
1294 SDValue InHi = DAG.getNode(ISD::EXTRACT_ELEMENT, DL, MVT::i32, In,
1295 DAG.getConstant(1, DL, MVT::i32));
1296 return DAG.getNode(MipsISD::MTLOHI, DL, MVT::Untyped, InLo, InHi);
1299 static SDValue extractLOHI(SDValue Op, SDLoc DL, SelectionDAG &DAG) {
1300 SDValue Lo = DAG.getNode(MipsISD::MFLO, DL, MVT::i32, Op);
1301 SDValue Hi = DAG.getNode(MipsISD::MFHI, DL, MVT::i32, Op);
1302 return DAG.getNode(ISD::BUILD_PAIR, DL, MVT::i64, Lo, Hi);
1305 // This function expands mips intrinsic nodes which have 64-bit input operands
1306 // or output values.
1308 // out64 = intrinsic-node in64
1310 // lo = copy (extract-element (in64, 0))
1311 // hi = copy (extract-element (in64, 1))
1312 // mips-specific-node
1315 // out64 = merge-values (v0, v1)
1317 static SDValue lowerDSPIntr(SDValue Op, SelectionDAG &DAG, unsigned Opc) {
1319 bool HasChainIn = Op->getOperand(0).getValueType() == MVT::Other;
1320 SmallVector<SDValue, 3> Ops;
1323 // See if Op has a chain input.
1325 Ops.push_back(Op->getOperand(OpNo++));
1327 // The next operand is the intrinsic opcode.
1328 assert(Op->getOperand(OpNo).getOpcode() == ISD::TargetConstant);
1330 // See if the next operand has type i64.
1331 SDValue Opnd = Op->getOperand(++OpNo), In64;
1333 if (Opnd.getValueType() == MVT::i64)
1334 In64 = initAccumulator(Opnd, DL, DAG);
1336 Ops.push_back(Opnd);
1338 // Push the remaining operands.
1339 for (++OpNo ; OpNo < Op->getNumOperands(); ++OpNo)
1340 Ops.push_back(Op->getOperand(OpNo));
1342 // Add In64 to the end of the list.
1344 Ops.push_back(In64);
1347 SmallVector<EVT, 2> ResTys;
1349 for (SDNode::value_iterator I = Op->value_begin(), E = Op->value_end();
1351 ResTys.push_back((*I == MVT::i64) ? MVT::Untyped : *I);
1354 SDValue Val = DAG.getNode(Opc, DL, ResTys, Ops);
1355 SDValue Out = (ResTys[0] == MVT::Untyped) ? extractLOHI(Val, DL, DAG) : Val;
1360 assert(Val->getValueType(1) == MVT::Other);
1361 SDValue Vals[] = { Out, SDValue(Val.getNode(), 1) };
1362 return DAG.getMergeValues(Vals, DL);
1365 // Lower an MSA copy intrinsic into the specified SelectionDAG node
1366 static SDValue lowerMSACopyIntr(SDValue Op, SelectionDAG &DAG, unsigned Opc) {
1368 SDValue Vec = Op->getOperand(1);
1369 SDValue Idx = Op->getOperand(2);
1370 EVT ResTy = Op->getValueType(0);
1371 EVT EltTy = Vec->getValueType(0).getVectorElementType();
1373 SDValue Result = DAG.getNode(Opc, DL, ResTy, Vec, Idx,
1374 DAG.getValueType(EltTy));
1379 static SDValue lowerMSASplatZExt(SDValue Op, unsigned OpNr, SelectionDAG &DAG) {
1380 EVT ResVecTy = Op->getValueType(0);
1381 EVT ViaVecTy = ResVecTy;
1384 // When ResVecTy == MVT::v2i64, LaneA is the upper 32 bits of the lane and
1385 // LaneB is the lower 32-bits. Otherwise LaneA and LaneB are alternating
1388 SDValue LaneB = Op->getOperand(2);
1390 if (ResVecTy == MVT::v2i64) {
1391 LaneA = DAG.getConstant(0, DL, MVT::i32);
1392 ViaVecTy = MVT::v4i32;
1396 SDValue Ops[16] = { LaneA, LaneB, LaneA, LaneB, LaneA, LaneB, LaneA, LaneB,
1397 LaneA, LaneB, LaneA, LaneB, LaneA, LaneB, LaneA, LaneB };
1399 SDValue Result = DAG.getNode(ISD::BUILD_VECTOR, DL, ViaVecTy,
1400 makeArrayRef(Ops, ViaVecTy.getVectorNumElements()));
1402 if (ViaVecTy != ResVecTy)
1403 Result = DAG.getNode(ISD::BITCAST, DL, ResVecTy, Result);
1408 static SDValue lowerMSASplatImm(SDValue Op, unsigned ImmOp, SelectionDAG &DAG) {
1409 return DAG.getConstant(Op->getConstantOperandVal(ImmOp), SDLoc(Op),
1410 Op->getValueType(0));
1413 static SDValue getBuildVectorSplat(EVT VecTy, SDValue SplatValue,
1414 bool BigEndian, SelectionDAG &DAG) {
1415 EVT ViaVecTy = VecTy;
1416 SDValue SplatValueA = SplatValue;
1417 SDValue SplatValueB = SplatValue;
1418 SDLoc DL(SplatValue);
1420 if (VecTy == MVT::v2i64) {
1421 // v2i64 BUILD_VECTOR must be performed via v4i32 so split into i32's.
1422 ViaVecTy = MVT::v4i32;
1424 SplatValueA = DAG.getNode(ISD::TRUNCATE, DL, MVT::i32, SplatValue);
1425 SplatValueB = DAG.getNode(ISD::SRL, DL, MVT::i64, SplatValue,
1426 DAG.getConstant(32, DL, MVT::i32));
1427 SplatValueB = DAG.getNode(ISD::TRUNCATE, DL, MVT::i32, SplatValueB);
1430 // We currently hold the parts in little endian order. Swap them if
1433 std::swap(SplatValueA, SplatValueB);
1435 SDValue Ops[16] = { SplatValueA, SplatValueB, SplatValueA, SplatValueB,
1436 SplatValueA, SplatValueB, SplatValueA, SplatValueB,
1437 SplatValueA, SplatValueB, SplatValueA, SplatValueB,
1438 SplatValueA, SplatValueB, SplatValueA, SplatValueB };
1440 SDValue Result = DAG.getNode(ISD::BUILD_VECTOR, DL, ViaVecTy,
1441 makeArrayRef(Ops, ViaVecTy.getVectorNumElements()));
1443 if (VecTy != ViaVecTy)
1444 Result = DAG.getNode(ISD::BITCAST, DL, VecTy, Result);
1449 static SDValue lowerMSABinaryBitImmIntr(SDValue Op, SelectionDAG &DAG,
1450 unsigned Opc, SDValue Imm,
1452 EVT VecTy = Op->getValueType(0);
1456 // The DAG Combiner can't constant fold bitcasted vectors yet so we must do it
1458 if (VecTy == MVT::v2i64) {
1459 if (ConstantSDNode *CImm = dyn_cast<ConstantSDNode>(Imm)) {
1460 APInt BitImm = APInt(64, 1) << CImm->getAPIntValue();
1462 SDValue BitImmHiOp = DAG.getConstant(BitImm.lshr(32).trunc(32), DL,
1464 SDValue BitImmLoOp = DAG.getConstant(BitImm.trunc(32), DL, MVT::i32);
1467 std::swap(BitImmLoOp, BitImmHiOp);
1470 DAG.getNode(ISD::BITCAST, DL, MVT::v2i64,
1471 DAG.getNode(ISD::BUILD_VECTOR, DL, MVT::v4i32, BitImmLoOp,
1472 BitImmHiOp, BitImmLoOp, BitImmHiOp));
1476 if (!Exp2Imm.getNode()) {
1477 // We couldnt constant fold, do a vector shift instead
1479 // Extend i32 to i64 if necessary. Sign or zero extend doesn't matter since
1480 // only values 0-63 are valid.
1481 if (VecTy == MVT::v2i64)
1482 Imm = DAG.getNode(ISD::ZERO_EXTEND, DL, MVT::i64, Imm);
1484 Exp2Imm = getBuildVectorSplat(VecTy, Imm, BigEndian, DAG);
1486 Exp2Imm = DAG.getNode(ISD::SHL, DL, VecTy, DAG.getConstant(1, DL, VecTy),
1490 return DAG.getNode(Opc, DL, VecTy, Op->getOperand(1), Exp2Imm);
1493 static SDValue lowerMSABitClear(SDValue Op, SelectionDAG &DAG) {
1494 EVT ResTy = Op->getValueType(0);
1496 SDValue One = DAG.getConstant(1, DL, ResTy);
1497 SDValue Bit = DAG.getNode(ISD::SHL, DL, ResTy, One, Op->getOperand(2));
1499 return DAG.getNode(ISD::AND, DL, ResTy, Op->getOperand(1),
1500 DAG.getNOT(DL, Bit, ResTy));
1503 static SDValue lowerMSABitClearImm(SDValue Op, SelectionDAG &DAG) {
1505 EVT ResTy = Op->getValueType(0);
1506 APInt BitImm = APInt(ResTy.getVectorElementType().getSizeInBits(), 1)
1507 << cast<ConstantSDNode>(Op->getOperand(2))->getAPIntValue();
1508 SDValue BitMask = DAG.getConstant(~BitImm, DL, ResTy);
1510 return DAG.getNode(ISD::AND, DL, ResTy, Op->getOperand(1), BitMask);
1513 SDValue MipsSETargetLowering::lowerINTRINSIC_WO_CHAIN(SDValue Op,
1514 SelectionDAG &DAG) const {
1517 switch (cast<ConstantSDNode>(Op->getOperand(0))->getZExtValue()) {
1520 case Intrinsic::mips_shilo:
1521 return lowerDSPIntr(Op, DAG, MipsISD::SHILO);
1522 case Intrinsic::mips_dpau_h_qbl:
1523 return lowerDSPIntr(Op, DAG, MipsISD::DPAU_H_QBL);
1524 case Intrinsic::mips_dpau_h_qbr:
1525 return lowerDSPIntr(Op, DAG, MipsISD::DPAU_H_QBR);
1526 case Intrinsic::mips_dpsu_h_qbl:
1527 return lowerDSPIntr(Op, DAG, MipsISD::DPSU_H_QBL);
1528 case Intrinsic::mips_dpsu_h_qbr:
1529 return lowerDSPIntr(Op, DAG, MipsISD::DPSU_H_QBR);
1530 case Intrinsic::mips_dpa_w_ph:
1531 return lowerDSPIntr(Op, DAG, MipsISD::DPA_W_PH);
1532 case Intrinsic::mips_dps_w_ph:
1533 return lowerDSPIntr(Op, DAG, MipsISD::DPS_W_PH);
1534 case Intrinsic::mips_dpax_w_ph:
1535 return lowerDSPIntr(Op, DAG, MipsISD::DPAX_W_PH);
1536 case Intrinsic::mips_dpsx_w_ph:
1537 return lowerDSPIntr(Op, DAG, MipsISD::DPSX_W_PH);
1538 case Intrinsic::mips_mulsa_w_ph:
1539 return lowerDSPIntr(Op, DAG, MipsISD::MULSA_W_PH);
1540 case Intrinsic::mips_mult:
1541 return lowerDSPIntr(Op, DAG, MipsISD::Mult);
1542 case Intrinsic::mips_multu:
1543 return lowerDSPIntr(Op, DAG, MipsISD::Multu);
1544 case Intrinsic::mips_madd:
1545 return lowerDSPIntr(Op, DAG, MipsISD::MAdd);
1546 case Intrinsic::mips_maddu:
1547 return lowerDSPIntr(Op, DAG, MipsISD::MAddu);
1548 case Intrinsic::mips_msub:
1549 return lowerDSPIntr(Op, DAG, MipsISD::MSub);
1550 case Intrinsic::mips_msubu:
1551 return lowerDSPIntr(Op, DAG, MipsISD::MSubu);
1552 case Intrinsic::mips_addv_b:
1553 case Intrinsic::mips_addv_h:
1554 case Intrinsic::mips_addv_w:
1555 case Intrinsic::mips_addv_d:
1556 return DAG.getNode(ISD::ADD, DL, Op->getValueType(0), Op->getOperand(1),
1558 case Intrinsic::mips_addvi_b:
1559 case Intrinsic::mips_addvi_h:
1560 case Intrinsic::mips_addvi_w:
1561 case Intrinsic::mips_addvi_d:
1562 return DAG.getNode(ISD::ADD, DL, Op->getValueType(0), Op->getOperand(1),
1563 lowerMSASplatImm(Op, 2, DAG));
1564 case Intrinsic::mips_and_v:
1565 return DAG.getNode(ISD::AND, DL, Op->getValueType(0), Op->getOperand(1),
1567 case Intrinsic::mips_andi_b:
1568 return DAG.getNode(ISD::AND, DL, Op->getValueType(0), Op->getOperand(1),
1569 lowerMSASplatImm(Op, 2, DAG));
1570 case Intrinsic::mips_bclr_b:
1571 case Intrinsic::mips_bclr_h:
1572 case Intrinsic::mips_bclr_w:
1573 case Intrinsic::mips_bclr_d:
1574 return lowerMSABitClear(Op, DAG);
1575 case Intrinsic::mips_bclri_b:
1576 case Intrinsic::mips_bclri_h:
1577 case Intrinsic::mips_bclri_w:
1578 case Intrinsic::mips_bclri_d:
1579 return lowerMSABitClearImm(Op, DAG);
1580 case Intrinsic::mips_binsli_b:
1581 case Intrinsic::mips_binsli_h:
1582 case Intrinsic::mips_binsli_w:
1583 case Intrinsic::mips_binsli_d: {
1584 // binsli_x(IfClear, IfSet, nbits) -> (vselect LBitsMask, IfSet, IfClear)
1585 EVT VecTy = Op->getValueType(0);
1586 EVT EltTy = VecTy.getVectorElementType();
1587 APInt Mask = APInt::getHighBitsSet(EltTy.getSizeInBits(),
1588 Op->getConstantOperandVal(3));
1589 return DAG.getNode(ISD::VSELECT, DL, VecTy,
1590 DAG.getConstant(Mask, DL, VecTy, true),
1591 Op->getOperand(2), Op->getOperand(1));
1593 case Intrinsic::mips_binsri_b:
1594 case Intrinsic::mips_binsri_h:
1595 case Intrinsic::mips_binsri_w:
1596 case Intrinsic::mips_binsri_d: {
1597 // binsri_x(IfClear, IfSet, nbits) -> (vselect RBitsMask, IfSet, IfClear)
1598 EVT VecTy = Op->getValueType(0);
1599 EVT EltTy = VecTy.getVectorElementType();
1600 APInt Mask = APInt::getLowBitsSet(EltTy.getSizeInBits(),
1601 Op->getConstantOperandVal(3));
1602 return DAG.getNode(ISD::VSELECT, DL, VecTy,
1603 DAG.getConstant(Mask, DL, VecTy, true),
1604 Op->getOperand(2), Op->getOperand(1));
1606 case Intrinsic::mips_bmnz_v:
1607 return DAG.getNode(ISD::VSELECT, DL, Op->getValueType(0), Op->getOperand(3),
1608 Op->getOperand(2), Op->getOperand(1));
1609 case Intrinsic::mips_bmnzi_b:
1610 return DAG.getNode(ISD::VSELECT, DL, Op->getValueType(0),
1611 lowerMSASplatImm(Op, 3, DAG), Op->getOperand(2),
1613 case Intrinsic::mips_bmz_v:
1614 return DAG.getNode(ISD::VSELECT, DL, Op->getValueType(0), Op->getOperand(3),
1615 Op->getOperand(1), Op->getOperand(2));
1616 case Intrinsic::mips_bmzi_b:
1617 return DAG.getNode(ISD::VSELECT, DL, Op->getValueType(0),
1618 lowerMSASplatImm(Op, 3, DAG), Op->getOperand(1),
1620 case Intrinsic::mips_bneg_b:
1621 case Intrinsic::mips_bneg_h:
1622 case Intrinsic::mips_bneg_w:
1623 case Intrinsic::mips_bneg_d: {
1624 EVT VecTy = Op->getValueType(0);
1625 SDValue One = DAG.getConstant(1, DL, VecTy);
1627 return DAG.getNode(ISD::XOR, DL, VecTy, Op->getOperand(1),
1628 DAG.getNode(ISD::SHL, DL, VecTy, One,
1629 Op->getOperand(2)));
1631 case Intrinsic::mips_bnegi_b:
1632 case Intrinsic::mips_bnegi_h:
1633 case Intrinsic::mips_bnegi_w:
1634 case Intrinsic::mips_bnegi_d:
1635 return lowerMSABinaryBitImmIntr(Op, DAG, ISD::XOR, Op->getOperand(2),
1636 !Subtarget.isLittle());
1637 case Intrinsic::mips_bnz_b:
1638 case Intrinsic::mips_bnz_h:
1639 case Intrinsic::mips_bnz_w:
1640 case Intrinsic::mips_bnz_d:
1641 return DAG.getNode(MipsISD::VALL_NONZERO, DL, Op->getValueType(0),
1643 case Intrinsic::mips_bnz_v:
1644 return DAG.getNode(MipsISD::VANY_NONZERO, DL, Op->getValueType(0),
1646 case Intrinsic::mips_bsel_v:
1647 // bsel_v(Mask, IfClear, IfSet) -> (vselect Mask, IfSet, IfClear)
1648 return DAG.getNode(ISD::VSELECT, DL, Op->getValueType(0),
1649 Op->getOperand(1), Op->getOperand(3),
1651 case Intrinsic::mips_bseli_b:
1652 // bseli_v(Mask, IfClear, IfSet) -> (vselect Mask, IfSet, IfClear)
1653 return DAG.getNode(ISD::VSELECT, DL, Op->getValueType(0),
1654 Op->getOperand(1), lowerMSASplatImm(Op, 3, DAG),
1656 case Intrinsic::mips_bset_b:
1657 case Intrinsic::mips_bset_h:
1658 case Intrinsic::mips_bset_w:
1659 case Intrinsic::mips_bset_d: {
1660 EVT VecTy = Op->getValueType(0);
1661 SDValue One = DAG.getConstant(1, DL, VecTy);
1663 return DAG.getNode(ISD::OR, DL, VecTy, Op->getOperand(1),
1664 DAG.getNode(ISD::SHL, DL, VecTy, One,
1665 Op->getOperand(2)));
1667 case Intrinsic::mips_bseti_b:
1668 case Intrinsic::mips_bseti_h:
1669 case Intrinsic::mips_bseti_w:
1670 case Intrinsic::mips_bseti_d:
1671 return lowerMSABinaryBitImmIntr(Op, DAG, ISD::OR, Op->getOperand(2),
1672 !Subtarget.isLittle());
1673 case Intrinsic::mips_bz_b:
1674 case Intrinsic::mips_bz_h:
1675 case Intrinsic::mips_bz_w:
1676 case Intrinsic::mips_bz_d:
1677 return DAG.getNode(MipsISD::VALL_ZERO, DL, Op->getValueType(0),
1679 case Intrinsic::mips_bz_v:
1680 return DAG.getNode(MipsISD::VANY_ZERO, DL, Op->getValueType(0),
1682 case Intrinsic::mips_ceq_b:
1683 case Intrinsic::mips_ceq_h:
1684 case Intrinsic::mips_ceq_w:
1685 case Intrinsic::mips_ceq_d:
1686 return DAG.getSetCC(DL, Op->getValueType(0), Op->getOperand(1),
1687 Op->getOperand(2), ISD::SETEQ);
1688 case Intrinsic::mips_ceqi_b:
1689 case Intrinsic::mips_ceqi_h:
1690 case Intrinsic::mips_ceqi_w:
1691 case Intrinsic::mips_ceqi_d:
1692 return DAG.getSetCC(DL, Op->getValueType(0), Op->getOperand(1),
1693 lowerMSASplatImm(Op, 2, DAG), ISD::SETEQ);
1694 case Intrinsic::mips_cle_s_b:
1695 case Intrinsic::mips_cle_s_h:
1696 case Intrinsic::mips_cle_s_w:
1697 case Intrinsic::mips_cle_s_d:
1698 return DAG.getSetCC(DL, Op->getValueType(0), Op->getOperand(1),
1699 Op->getOperand(2), ISD::SETLE);
1700 case Intrinsic::mips_clei_s_b:
1701 case Intrinsic::mips_clei_s_h:
1702 case Intrinsic::mips_clei_s_w:
1703 case Intrinsic::mips_clei_s_d:
1704 return DAG.getSetCC(DL, Op->getValueType(0), Op->getOperand(1),
1705 lowerMSASplatImm(Op, 2, DAG), ISD::SETLE);
1706 case Intrinsic::mips_cle_u_b:
1707 case Intrinsic::mips_cle_u_h:
1708 case Intrinsic::mips_cle_u_w:
1709 case Intrinsic::mips_cle_u_d:
1710 return DAG.getSetCC(DL, Op->getValueType(0), Op->getOperand(1),
1711 Op->getOperand(2), ISD::SETULE);
1712 case Intrinsic::mips_clei_u_b:
1713 case Intrinsic::mips_clei_u_h:
1714 case Intrinsic::mips_clei_u_w:
1715 case Intrinsic::mips_clei_u_d:
1716 return DAG.getSetCC(DL, Op->getValueType(0), Op->getOperand(1),
1717 lowerMSASplatImm(Op, 2, DAG), ISD::SETULE);
1718 case Intrinsic::mips_clt_s_b:
1719 case Intrinsic::mips_clt_s_h:
1720 case Intrinsic::mips_clt_s_w:
1721 case Intrinsic::mips_clt_s_d:
1722 return DAG.getSetCC(DL, Op->getValueType(0), Op->getOperand(1),
1723 Op->getOperand(2), ISD::SETLT);
1724 case Intrinsic::mips_clti_s_b:
1725 case Intrinsic::mips_clti_s_h:
1726 case Intrinsic::mips_clti_s_w:
1727 case Intrinsic::mips_clti_s_d:
1728 return DAG.getSetCC(DL, Op->getValueType(0), Op->getOperand(1),
1729 lowerMSASplatImm(Op, 2, DAG), ISD::SETLT);
1730 case Intrinsic::mips_clt_u_b:
1731 case Intrinsic::mips_clt_u_h:
1732 case Intrinsic::mips_clt_u_w:
1733 case Intrinsic::mips_clt_u_d:
1734 return DAG.getSetCC(DL, Op->getValueType(0), Op->getOperand(1),
1735 Op->getOperand(2), ISD::SETULT);
1736 case Intrinsic::mips_clti_u_b:
1737 case Intrinsic::mips_clti_u_h:
1738 case Intrinsic::mips_clti_u_w:
1739 case Intrinsic::mips_clti_u_d:
1740 return DAG.getSetCC(DL, Op->getValueType(0), Op->getOperand(1),
1741 lowerMSASplatImm(Op, 2, DAG), ISD::SETULT);
1742 case Intrinsic::mips_copy_s_b:
1743 case Intrinsic::mips_copy_s_h:
1744 case Intrinsic::mips_copy_s_w:
1745 return lowerMSACopyIntr(Op, DAG, MipsISD::VEXTRACT_SEXT_ELT);
1746 case Intrinsic::mips_copy_s_d:
1747 if (Subtarget.hasMips64())
1748 // Lower directly into VEXTRACT_SEXT_ELT since i64 is legal on Mips64.
1749 return lowerMSACopyIntr(Op, DAG, MipsISD::VEXTRACT_SEXT_ELT);
1751 // Lower into the generic EXTRACT_VECTOR_ELT node and let the type
1752 // legalizer and EXTRACT_VECTOR_ELT lowering sort it out.
1753 return DAG.getNode(ISD::EXTRACT_VECTOR_ELT, SDLoc(Op),
1754 Op->getValueType(0), Op->getOperand(1),
1757 case Intrinsic::mips_copy_u_b:
1758 case Intrinsic::mips_copy_u_h:
1759 case Intrinsic::mips_copy_u_w:
1760 return lowerMSACopyIntr(Op, DAG, MipsISD::VEXTRACT_ZEXT_ELT);
1761 case Intrinsic::mips_copy_u_d:
1762 if (Subtarget.hasMips64())
1763 // Lower directly into VEXTRACT_ZEXT_ELT since i64 is legal on Mips64.
1764 return lowerMSACopyIntr(Op, DAG, MipsISD::VEXTRACT_ZEXT_ELT);
1766 // Lower into the generic EXTRACT_VECTOR_ELT node and let the type
1767 // legalizer and EXTRACT_VECTOR_ELT lowering sort it out.
1768 // Note: When i64 is illegal, this results in copy_s.w instructions
1769 // instead of copy_u.w instructions. This makes no difference to the
1770 // behaviour since i64 is only illegal when the register file is 32-bit.
1771 return DAG.getNode(ISD::EXTRACT_VECTOR_ELT, SDLoc(Op),
1772 Op->getValueType(0), Op->getOperand(1),
1775 case Intrinsic::mips_div_s_b:
1776 case Intrinsic::mips_div_s_h:
1777 case Intrinsic::mips_div_s_w:
1778 case Intrinsic::mips_div_s_d:
1779 return DAG.getNode(ISD::SDIV, DL, Op->getValueType(0), Op->getOperand(1),
1781 case Intrinsic::mips_div_u_b:
1782 case Intrinsic::mips_div_u_h:
1783 case Intrinsic::mips_div_u_w:
1784 case Intrinsic::mips_div_u_d:
1785 return DAG.getNode(ISD::UDIV, DL, Op->getValueType(0), Op->getOperand(1),
1787 case Intrinsic::mips_fadd_w:
1788 case Intrinsic::mips_fadd_d:
1789 return DAG.getNode(ISD::FADD, DL, Op->getValueType(0), Op->getOperand(1),
1791 // Don't lower mips_fcaf_[wd] since LLVM folds SETFALSE condcodes away
1792 case Intrinsic::mips_fceq_w:
1793 case Intrinsic::mips_fceq_d:
1794 return DAG.getSetCC(DL, Op->getValueType(0), Op->getOperand(1),
1795 Op->getOperand(2), ISD::SETOEQ);
1796 case Intrinsic::mips_fcle_w:
1797 case Intrinsic::mips_fcle_d:
1798 return DAG.getSetCC(DL, Op->getValueType(0), Op->getOperand(1),
1799 Op->getOperand(2), ISD::SETOLE);
1800 case Intrinsic::mips_fclt_w:
1801 case Intrinsic::mips_fclt_d:
1802 return DAG.getSetCC(DL, Op->getValueType(0), Op->getOperand(1),
1803 Op->getOperand(2), ISD::SETOLT);
1804 case Intrinsic::mips_fcne_w:
1805 case Intrinsic::mips_fcne_d:
1806 return DAG.getSetCC(DL, Op->getValueType(0), Op->getOperand(1),
1807 Op->getOperand(2), ISD::SETONE);
1808 case Intrinsic::mips_fcor_w:
1809 case Intrinsic::mips_fcor_d:
1810 return DAG.getSetCC(DL, Op->getValueType(0), Op->getOperand(1),
1811 Op->getOperand(2), ISD::SETO);
1812 case Intrinsic::mips_fcueq_w:
1813 case Intrinsic::mips_fcueq_d:
1814 return DAG.getSetCC(DL, Op->getValueType(0), Op->getOperand(1),
1815 Op->getOperand(2), ISD::SETUEQ);
1816 case Intrinsic::mips_fcule_w:
1817 case Intrinsic::mips_fcule_d:
1818 return DAG.getSetCC(DL, Op->getValueType(0), Op->getOperand(1),
1819 Op->getOperand(2), ISD::SETULE);
1820 case Intrinsic::mips_fcult_w:
1821 case Intrinsic::mips_fcult_d:
1822 return DAG.getSetCC(DL, Op->getValueType(0), Op->getOperand(1),
1823 Op->getOperand(2), ISD::SETULT);
1824 case Intrinsic::mips_fcun_w:
1825 case Intrinsic::mips_fcun_d:
1826 return DAG.getSetCC(DL, Op->getValueType(0), Op->getOperand(1),
1827 Op->getOperand(2), ISD::SETUO);
1828 case Intrinsic::mips_fcune_w:
1829 case Intrinsic::mips_fcune_d:
1830 return DAG.getSetCC(DL, Op->getValueType(0), Op->getOperand(1),
1831 Op->getOperand(2), ISD::SETUNE);
1832 case Intrinsic::mips_fdiv_w:
1833 case Intrinsic::mips_fdiv_d:
1834 return DAG.getNode(ISD::FDIV, DL, Op->getValueType(0), Op->getOperand(1),
1836 case Intrinsic::mips_ffint_u_w:
1837 case Intrinsic::mips_ffint_u_d:
1838 return DAG.getNode(ISD::UINT_TO_FP, DL, Op->getValueType(0),
1840 case Intrinsic::mips_ffint_s_w:
1841 case Intrinsic::mips_ffint_s_d:
1842 return DAG.getNode(ISD::SINT_TO_FP, DL, Op->getValueType(0),
1844 case Intrinsic::mips_fill_b:
1845 case Intrinsic::mips_fill_h:
1846 case Intrinsic::mips_fill_w:
1847 case Intrinsic::mips_fill_d: {
1848 EVT ResTy = Op->getValueType(0);
1849 SmallVector<SDValue, 16> Ops(ResTy.getVectorNumElements(),
1852 // If ResTy is v2i64 then the type legalizer will break this node down into
1853 // an equivalent v4i32.
1854 return DAG.getNode(ISD::BUILD_VECTOR, DL, ResTy, Ops);
1856 case Intrinsic::mips_fexp2_w:
1857 case Intrinsic::mips_fexp2_d: {
1858 EVT ResTy = Op->getValueType(0);
1860 ISD::FMUL, SDLoc(Op), ResTy, Op->getOperand(1),
1861 DAG.getNode(ISD::FEXP2, SDLoc(Op), ResTy, Op->getOperand(2)));
1863 case Intrinsic::mips_flog2_w:
1864 case Intrinsic::mips_flog2_d:
1865 return DAG.getNode(ISD::FLOG2, DL, Op->getValueType(0), Op->getOperand(1));
1866 case Intrinsic::mips_fmadd_w:
1867 case Intrinsic::mips_fmadd_d:
1868 return DAG.getNode(ISD::FMA, SDLoc(Op), Op->getValueType(0),
1869 Op->getOperand(1), Op->getOperand(2), Op->getOperand(3));
1870 case Intrinsic::mips_fmul_w:
1871 case Intrinsic::mips_fmul_d:
1872 return DAG.getNode(ISD::FMUL, DL, Op->getValueType(0), Op->getOperand(1),
1874 case Intrinsic::mips_fmsub_w:
1875 case Intrinsic::mips_fmsub_d: {
1876 EVT ResTy = Op->getValueType(0);
1877 return DAG.getNode(ISD::FSUB, SDLoc(Op), ResTy, Op->getOperand(1),
1878 DAG.getNode(ISD::FMUL, SDLoc(Op), ResTy,
1879 Op->getOperand(2), Op->getOperand(3)));
1881 case Intrinsic::mips_frint_w:
1882 case Intrinsic::mips_frint_d:
1883 return DAG.getNode(ISD::FRINT, DL, Op->getValueType(0), Op->getOperand(1));
1884 case Intrinsic::mips_fsqrt_w:
1885 case Intrinsic::mips_fsqrt_d:
1886 return DAG.getNode(ISD::FSQRT, DL, Op->getValueType(0), Op->getOperand(1));
1887 case Intrinsic::mips_fsub_w:
1888 case Intrinsic::mips_fsub_d:
1889 return DAG.getNode(ISD::FSUB, DL, Op->getValueType(0), Op->getOperand(1),
1891 case Intrinsic::mips_ftrunc_u_w:
1892 case Intrinsic::mips_ftrunc_u_d:
1893 return DAG.getNode(ISD::FP_TO_UINT, DL, Op->getValueType(0),
1895 case Intrinsic::mips_ftrunc_s_w:
1896 case Intrinsic::mips_ftrunc_s_d:
1897 return DAG.getNode(ISD::FP_TO_SINT, DL, Op->getValueType(0),
1899 case Intrinsic::mips_ilvev_b:
1900 case Intrinsic::mips_ilvev_h:
1901 case Intrinsic::mips_ilvev_w:
1902 case Intrinsic::mips_ilvev_d:
1903 return DAG.getNode(MipsISD::ILVEV, DL, Op->getValueType(0),
1904 Op->getOperand(1), Op->getOperand(2));
1905 case Intrinsic::mips_ilvl_b:
1906 case Intrinsic::mips_ilvl_h:
1907 case Intrinsic::mips_ilvl_w:
1908 case Intrinsic::mips_ilvl_d:
1909 return DAG.getNode(MipsISD::ILVL, DL, Op->getValueType(0),
1910 Op->getOperand(1), Op->getOperand(2));
1911 case Intrinsic::mips_ilvod_b:
1912 case Intrinsic::mips_ilvod_h:
1913 case Intrinsic::mips_ilvod_w:
1914 case Intrinsic::mips_ilvod_d:
1915 return DAG.getNode(MipsISD::ILVOD, DL, Op->getValueType(0),
1916 Op->getOperand(1), Op->getOperand(2));
1917 case Intrinsic::mips_ilvr_b:
1918 case Intrinsic::mips_ilvr_h:
1919 case Intrinsic::mips_ilvr_w:
1920 case Intrinsic::mips_ilvr_d:
1921 return DAG.getNode(MipsISD::ILVR, DL, Op->getValueType(0),
1922 Op->getOperand(1), Op->getOperand(2));
1923 case Intrinsic::mips_insert_b:
1924 case Intrinsic::mips_insert_h:
1925 case Intrinsic::mips_insert_w:
1926 case Intrinsic::mips_insert_d:
1927 return DAG.getNode(ISD::INSERT_VECTOR_ELT, SDLoc(Op), Op->getValueType(0),
1928 Op->getOperand(1), Op->getOperand(3), Op->getOperand(2));
1929 case Intrinsic::mips_insve_b:
1930 case Intrinsic::mips_insve_h:
1931 case Intrinsic::mips_insve_w:
1932 case Intrinsic::mips_insve_d:
1933 return DAG.getNode(MipsISD::INSVE, DL, Op->getValueType(0),
1934 Op->getOperand(1), Op->getOperand(2), Op->getOperand(3),
1935 DAG.getConstant(0, DL, MVT::i32));
1936 case Intrinsic::mips_ldi_b:
1937 case Intrinsic::mips_ldi_h:
1938 case Intrinsic::mips_ldi_w:
1939 case Intrinsic::mips_ldi_d:
1940 return lowerMSASplatImm(Op, 1, DAG);
1941 case Intrinsic::mips_lsa:
1942 case Intrinsic::mips_dlsa: {
1943 EVT ResTy = Op->getValueType(0);
1944 return DAG.getNode(ISD::ADD, SDLoc(Op), ResTy, Op->getOperand(1),
1945 DAG.getNode(ISD::SHL, SDLoc(Op), ResTy,
1946 Op->getOperand(2), Op->getOperand(3)));
1948 case Intrinsic::mips_maddv_b:
1949 case Intrinsic::mips_maddv_h:
1950 case Intrinsic::mips_maddv_w:
1951 case Intrinsic::mips_maddv_d: {
1952 EVT ResTy = Op->getValueType(0);
1953 return DAG.getNode(ISD::ADD, SDLoc(Op), ResTy, Op->getOperand(1),
1954 DAG.getNode(ISD::MUL, SDLoc(Op), ResTy,
1955 Op->getOperand(2), Op->getOperand(3)));
1957 case Intrinsic::mips_max_s_b:
1958 case Intrinsic::mips_max_s_h:
1959 case Intrinsic::mips_max_s_w:
1960 case Intrinsic::mips_max_s_d:
1961 return DAG.getNode(MipsISD::VSMAX, DL, Op->getValueType(0),
1962 Op->getOperand(1), Op->getOperand(2));
1963 case Intrinsic::mips_max_u_b:
1964 case Intrinsic::mips_max_u_h:
1965 case Intrinsic::mips_max_u_w:
1966 case Intrinsic::mips_max_u_d:
1967 return DAG.getNode(MipsISD::VUMAX, DL, Op->getValueType(0),
1968 Op->getOperand(1), Op->getOperand(2));
1969 case Intrinsic::mips_maxi_s_b:
1970 case Intrinsic::mips_maxi_s_h:
1971 case Intrinsic::mips_maxi_s_w:
1972 case Intrinsic::mips_maxi_s_d:
1973 return DAG.getNode(MipsISD::VSMAX, DL, Op->getValueType(0),
1974 Op->getOperand(1), lowerMSASplatImm(Op, 2, DAG));
1975 case Intrinsic::mips_maxi_u_b:
1976 case Intrinsic::mips_maxi_u_h:
1977 case Intrinsic::mips_maxi_u_w:
1978 case Intrinsic::mips_maxi_u_d:
1979 return DAG.getNode(MipsISD::VUMAX, DL, Op->getValueType(0),
1980 Op->getOperand(1), lowerMSASplatImm(Op, 2, DAG));
1981 case Intrinsic::mips_min_s_b:
1982 case Intrinsic::mips_min_s_h:
1983 case Intrinsic::mips_min_s_w:
1984 case Intrinsic::mips_min_s_d:
1985 return DAG.getNode(MipsISD::VSMIN, DL, Op->getValueType(0),
1986 Op->getOperand(1), Op->getOperand(2));
1987 case Intrinsic::mips_min_u_b:
1988 case Intrinsic::mips_min_u_h:
1989 case Intrinsic::mips_min_u_w:
1990 case Intrinsic::mips_min_u_d:
1991 return DAG.getNode(MipsISD::VUMIN, DL, Op->getValueType(0),
1992 Op->getOperand(1), Op->getOperand(2));
1993 case Intrinsic::mips_mini_s_b:
1994 case Intrinsic::mips_mini_s_h:
1995 case Intrinsic::mips_mini_s_w:
1996 case Intrinsic::mips_mini_s_d:
1997 return DAG.getNode(MipsISD::VSMIN, DL, Op->getValueType(0),
1998 Op->getOperand(1), lowerMSASplatImm(Op, 2, DAG));
1999 case Intrinsic::mips_mini_u_b:
2000 case Intrinsic::mips_mini_u_h:
2001 case Intrinsic::mips_mini_u_w:
2002 case Intrinsic::mips_mini_u_d:
2003 return DAG.getNode(MipsISD::VUMIN, DL, Op->getValueType(0),
2004 Op->getOperand(1), lowerMSASplatImm(Op, 2, DAG));
2005 case Intrinsic::mips_mod_s_b:
2006 case Intrinsic::mips_mod_s_h:
2007 case Intrinsic::mips_mod_s_w:
2008 case Intrinsic::mips_mod_s_d:
2009 return DAG.getNode(ISD::SREM, DL, Op->getValueType(0), Op->getOperand(1),
2011 case Intrinsic::mips_mod_u_b:
2012 case Intrinsic::mips_mod_u_h:
2013 case Intrinsic::mips_mod_u_w:
2014 case Intrinsic::mips_mod_u_d:
2015 return DAG.getNode(ISD::UREM, DL, Op->getValueType(0), Op->getOperand(1),
2017 case Intrinsic::mips_mulv_b:
2018 case Intrinsic::mips_mulv_h:
2019 case Intrinsic::mips_mulv_w:
2020 case Intrinsic::mips_mulv_d:
2021 return DAG.getNode(ISD::MUL, DL, Op->getValueType(0), Op->getOperand(1),
2023 case Intrinsic::mips_msubv_b:
2024 case Intrinsic::mips_msubv_h:
2025 case Intrinsic::mips_msubv_w:
2026 case Intrinsic::mips_msubv_d: {
2027 EVT ResTy = Op->getValueType(0);
2028 return DAG.getNode(ISD::SUB, SDLoc(Op), ResTy, Op->getOperand(1),
2029 DAG.getNode(ISD::MUL, SDLoc(Op), ResTy,
2030 Op->getOperand(2), Op->getOperand(3)));
2032 case Intrinsic::mips_nlzc_b:
2033 case Intrinsic::mips_nlzc_h:
2034 case Intrinsic::mips_nlzc_w:
2035 case Intrinsic::mips_nlzc_d:
2036 return DAG.getNode(ISD::CTLZ, DL, Op->getValueType(0), Op->getOperand(1));
2037 case Intrinsic::mips_nor_v: {
2038 SDValue Res = DAG.getNode(ISD::OR, DL, Op->getValueType(0),
2039 Op->getOperand(1), Op->getOperand(2));
2040 return DAG.getNOT(DL, Res, Res->getValueType(0));
2042 case Intrinsic::mips_nori_b: {
2043 SDValue Res = DAG.getNode(ISD::OR, DL, Op->getValueType(0),
2045 lowerMSASplatImm(Op, 2, DAG));
2046 return DAG.getNOT(DL, Res, Res->getValueType(0));
2048 case Intrinsic::mips_or_v:
2049 return DAG.getNode(ISD::OR, DL, Op->getValueType(0), Op->getOperand(1),
2051 case Intrinsic::mips_ori_b:
2052 return DAG.getNode(ISD::OR, DL, Op->getValueType(0),
2053 Op->getOperand(1), lowerMSASplatImm(Op, 2, DAG));
2054 case Intrinsic::mips_pckev_b:
2055 case Intrinsic::mips_pckev_h:
2056 case Intrinsic::mips_pckev_w:
2057 case Intrinsic::mips_pckev_d:
2058 return DAG.getNode(MipsISD::PCKEV, DL, Op->getValueType(0),
2059 Op->getOperand(1), Op->getOperand(2));
2060 case Intrinsic::mips_pckod_b:
2061 case Intrinsic::mips_pckod_h:
2062 case Intrinsic::mips_pckod_w:
2063 case Intrinsic::mips_pckod_d:
2064 return DAG.getNode(MipsISD::PCKOD, DL, Op->getValueType(0),
2065 Op->getOperand(1), Op->getOperand(2));
2066 case Intrinsic::mips_pcnt_b:
2067 case Intrinsic::mips_pcnt_h:
2068 case Intrinsic::mips_pcnt_w:
2069 case Intrinsic::mips_pcnt_d:
2070 return DAG.getNode(ISD::CTPOP, DL, Op->getValueType(0), Op->getOperand(1));
2071 case Intrinsic::mips_shf_b:
2072 case Intrinsic::mips_shf_h:
2073 case Intrinsic::mips_shf_w:
2074 return DAG.getNode(MipsISD::SHF, DL, Op->getValueType(0),
2075 Op->getOperand(2), Op->getOperand(1));
2076 case Intrinsic::mips_sll_b:
2077 case Intrinsic::mips_sll_h:
2078 case Intrinsic::mips_sll_w:
2079 case Intrinsic::mips_sll_d:
2080 return DAG.getNode(ISD::SHL, DL, Op->getValueType(0), Op->getOperand(1),
2082 case Intrinsic::mips_slli_b:
2083 case Intrinsic::mips_slli_h:
2084 case Intrinsic::mips_slli_w:
2085 case Intrinsic::mips_slli_d:
2086 return DAG.getNode(ISD::SHL, DL, Op->getValueType(0),
2087 Op->getOperand(1), lowerMSASplatImm(Op, 2, DAG));
2088 case Intrinsic::mips_splat_b:
2089 case Intrinsic::mips_splat_h:
2090 case Intrinsic::mips_splat_w:
2091 case Intrinsic::mips_splat_d:
2092 // We can't lower via VECTOR_SHUFFLE because it requires constant shuffle
2093 // masks, nor can we lower via BUILD_VECTOR & EXTRACT_VECTOR_ELT because
2094 // EXTRACT_VECTOR_ELT can't extract i64's on MIPS32.
2095 // Instead we lower to MipsISD::VSHF and match from there.
2096 return DAG.getNode(MipsISD::VSHF, DL, Op->getValueType(0),
2097 lowerMSASplatZExt(Op, 2, DAG), Op->getOperand(1),
2099 case Intrinsic::mips_splati_b:
2100 case Intrinsic::mips_splati_h:
2101 case Intrinsic::mips_splati_w:
2102 case Intrinsic::mips_splati_d:
2103 return DAG.getNode(MipsISD::VSHF, DL, Op->getValueType(0),
2104 lowerMSASplatImm(Op, 2, DAG), Op->getOperand(1),
2106 case Intrinsic::mips_sra_b:
2107 case Intrinsic::mips_sra_h:
2108 case Intrinsic::mips_sra_w:
2109 case Intrinsic::mips_sra_d:
2110 return DAG.getNode(ISD::SRA, DL, Op->getValueType(0), Op->getOperand(1),
2112 case Intrinsic::mips_srai_b:
2113 case Intrinsic::mips_srai_h:
2114 case Intrinsic::mips_srai_w:
2115 case Intrinsic::mips_srai_d:
2116 return DAG.getNode(ISD::SRA, DL, Op->getValueType(0),
2117 Op->getOperand(1), lowerMSASplatImm(Op, 2, DAG));
2118 case Intrinsic::mips_srl_b:
2119 case Intrinsic::mips_srl_h:
2120 case Intrinsic::mips_srl_w:
2121 case Intrinsic::mips_srl_d:
2122 return DAG.getNode(ISD::SRL, DL, Op->getValueType(0), Op->getOperand(1),
2124 case Intrinsic::mips_srli_b:
2125 case Intrinsic::mips_srli_h:
2126 case Intrinsic::mips_srli_w:
2127 case Intrinsic::mips_srli_d:
2128 return DAG.getNode(ISD::SRL, DL, Op->getValueType(0),
2129 Op->getOperand(1), lowerMSASplatImm(Op, 2, DAG));
2130 case Intrinsic::mips_subv_b:
2131 case Intrinsic::mips_subv_h:
2132 case Intrinsic::mips_subv_w:
2133 case Intrinsic::mips_subv_d:
2134 return DAG.getNode(ISD::SUB, DL, Op->getValueType(0), Op->getOperand(1),
2136 case Intrinsic::mips_subvi_b:
2137 case Intrinsic::mips_subvi_h:
2138 case Intrinsic::mips_subvi_w:
2139 case Intrinsic::mips_subvi_d:
2140 return DAG.getNode(ISD::SUB, DL, Op->getValueType(0),
2141 Op->getOperand(1), lowerMSASplatImm(Op, 2, DAG));
2142 case Intrinsic::mips_vshf_b:
2143 case Intrinsic::mips_vshf_h:
2144 case Intrinsic::mips_vshf_w:
2145 case Intrinsic::mips_vshf_d:
2146 return DAG.getNode(MipsISD::VSHF, DL, Op->getValueType(0),
2147 Op->getOperand(1), Op->getOperand(2), Op->getOperand(3));
2148 case Intrinsic::mips_xor_v:
2149 return DAG.getNode(ISD::XOR, DL, Op->getValueType(0), Op->getOperand(1),
2151 case Intrinsic::mips_xori_b:
2152 return DAG.getNode(ISD::XOR, DL, Op->getValueType(0),
2153 Op->getOperand(1), lowerMSASplatImm(Op, 2, DAG));
2157 static SDValue lowerMSALoadIntr(SDValue Op, SelectionDAG &DAG, unsigned Intr) {
2159 SDValue ChainIn = Op->getOperand(0);
2160 SDValue Address = Op->getOperand(2);
2161 SDValue Offset = Op->getOperand(3);
2162 EVT ResTy = Op->getValueType(0);
2163 EVT PtrTy = Address->getValueType(0);
2165 Address = DAG.getNode(ISD::ADD, DL, PtrTy, Address, Offset);
2167 return DAG.getLoad(ResTy, DL, ChainIn, Address, MachinePointerInfo(), false,
2171 SDValue MipsSETargetLowering::lowerINTRINSIC_W_CHAIN(SDValue Op,
2172 SelectionDAG &DAG) const {
2173 unsigned Intr = cast<ConstantSDNode>(Op->getOperand(1))->getZExtValue();
2177 case Intrinsic::mips_extp:
2178 return lowerDSPIntr(Op, DAG, MipsISD::EXTP);
2179 case Intrinsic::mips_extpdp:
2180 return lowerDSPIntr(Op, DAG, MipsISD::EXTPDP);
2181 case Intrinsic::mips_extr_w:
2182 return lowerDSPIntr(Op, DAG, MipsISD::EXTR_W);
2183 case Intrinsic::mips_extr_r_w:
2184 return lowerDSPIntr(Op, DAG, MipsISD::EXTR_R_W);
2185 case Intrinsic::mips_extr_rs_w:
2186 return lowerDSPIntr(Op, DAG, MipsISD::EXTR_RS_W);
2187 case Intrinsic::mips_extr_s_h:
2188 return lowerDSPIntr(Op, DAG, MipsISD::EXTR_S_H);
2189 case Intrinsic::mips_mthlip:
2190 return lowerDSPIntr(Op, DAG, MipsISD::MTHLIP);
2191 case Intrinsic::mips_mulsaq_s_w_ph:
2192 return lowerDSPIntr(Op, DAG, MipsISD::MULSAQ_S_W_PH);
2193 case Intrinsic::mips_maq_s_w_phl:
2194 return lowerDSPIntr(Op, DAG, MipsISD::MAQ_S_W_PHL);
2195 case Intrinsic::mips_maq_s_w_phr:
2196 return lowerDSPIntr(Op, DAG, MipsISD::MAQ_S_W_PHR);
2197 case Intrinsic::mips_maq_sa_w_phl:
2198 return lowerDSPIntr(Op, DAG, MipsISD::MAQ_SA_W_PHL);
2199 case Intrinsic::mips_maq_sa_w_phr:
2200 return lowerDSPIntr(Op, DAG, MipsISD::MAQ_SA_W_PHR);
2201 case Intrinsic::mips_dpaq_s_w_ph:
2202 return lowerDSPIntr(Op, DAG, MipsISD::DPAQ_S_W_PH);
2203 case Intrinsic::mips_dpsq_s_w_ph:
2204 return lowerDSPIntr(Op, DAG, MipsISD::DPSQ_S_W_PH);
2205 case Intrinsic::mips_dpaq_sa_l_w:
2206 return lowerDSPIntr(Op, DAG, MipsISD::DPAQ_SA_L_W);
2207 case Intrinsic::mips_dpsq_sa_l_w:
2208 return lowerDSPIntr(Op, DAG, MipsISD::DPSQ_SA_L_W);
2209 case Intrinsic::mips_dpaqx_s_w_ph:
2210 return lowerDSPIntr(Op, DAG, MipsISD::DPAQX_S_W_PH);
2211 case Intrinsic::mips_dpaqx_sa_w_ph:
2212 return lowerDSPIntr(Op, DAG, MipsISD::DPAQX_SA_W_PH);
2213 case Intrinsic::mips_dpsqx_s_w_ph:
2214 return lowerDSPIntr(Op, DAG, MipsISD::DPSQX_S_W_PH);
2215 case Intrinsic::mips_dpsqx_sa_w_ph:
2216 return lowerDSPIntr(Op, DAG, MipsISD::DPSQX_SA_W_PH);
2217 case Intrinsic::mips_ld_b:
2218 case Intrinsic::mips_ld_h:
2219 case Intrinsic::mips_ld_w:
2220 case Intrinsic::mips_ld_d:
2221 return lowerMSALoadIntr(Op, DAG, Intr);
2225 static SDValue lowerMSAStoreIntr(SDValue Op, SelectionDAG &DAG, unsigned Intr) {
2227 SDValue ChainIn = Op->getOperand(0);
2228 SDValue Value = Op->getOperand(2);
2229 SDValue Address = Op->getOperand(3);
2230 SDValue Offset = Op->getOperand(4);
2231 EVT PtrTy = Address->getValueType(0);
2233 Address = DAG.getNode(ISD::ADD, DL, PtrTy, Address, Offset);
2235 return DAG.getStore(ChainIn, DL, Value, Address, MachinePointerInfo(), false,
2239 SDValue MipsSETargetLowering::lowerINTRINSIC_VOID(SDValue Op,
2240 SelectionDAG &DAG) const {
2241 unsigned Intr = cast<ConstantSDNode>(Op->getOperand(1))->getZExtValue();
2245 case Intrinsic::mips_st_b:
2246 case Intrinsic::mips_st_h:
2247 case Intrinsic::mips_st_w:
2248 case Intrinsic::mips_st_d:
2249 return lowerMSAStoreIntr(Op, DAG, Intr);
2253 /// \brief Check if the given BuildVectorSDNode is a splat.
2254 /// This method currently relies on DAG nodes being reused when equivalent,
2255 /// so it's possible for this to return false even when isConstantSplat returns
2257 static bool isSplatVector(const BuildVectorSDNode *N) {
2258 unsigned int nOps = N->getNumOperands();
2259 assert(nOps > 1 && "isSplatVector has 0 or 1 sized build vector");
2261 SDValue Operand0 = N->getOperand(0);
2263 for (unsigned int i = 1; i < nOps; ++i) {
2264 if (N->getOperand(i) != Operand0)
2271 // Lower ISD::EXTRACT_VECTOR_ELT into MipsISD::VEXTRACT_SEXT_ELT.
2273 // The non-value bits resulting from ISD::EXTRACT_VECTOR_ELT are undefined. We
2274 // choose to sign-extend but we could have equally chosen zero-extend. The
2275 // DAGCombiner will fold any sign/zero extension of the ISD::EXTRACT_VECTOR_ELT
2276 // result into this node later (possibly changing it to a zero-extend in the
2278 SDValue MipsSETargetLowering::
2279 lowerEXTRACT_VECTOR_ELT(SDValue Op, SelectionDAG &DAG) const {
2281 EVT ResTy = Op->getValueType(0);
2282 SDValue Op0 = Op->getOperand(0);
2283 EVT VecTy = Op0->getValueType(0);
2285 if (!VecTy.is128BitVector())
2288 if (ResTy.isInteger()) {
2289 SDValue Op1 = Op->getOperand(1);
2290 EVT EltTy = VecTy.getVectorElementType();
2291 return DAG.getNode(MipsISD::VEXTRACT_SEXT_ELT, DL, ResTy, Op0, Op1,
2292 DAG.getValueType(EltTy));
2298 static bool isConstantOrUndef(const SDValue Op) {
2299 if (Op->getOpcode() == ISD::UNDEF)
2301 if (isa<ConstantSDNode>(Op))
2303 if (isa<ConstantFPSDNode>(Op))
2308 static bool isConstantOrUndefBUILD_VECTOR(const BuildVectorSDNode *Op) {
2309 for (unsigned i = 0; i < Op->getNumOperands(); ++i)
2310 if (isConstantOrUndef(Op->getOperand(i)))
2315 // Lowers ISD::BUILD_VECTOR into appropriate SelectionDAG nodes for the
2318 // Lowers according to the following rules:
2319 // - Constant splats are legal as-is as long as the SplatBitSize is a power of
2320 // 2 less than or equal to 64 and the value fits into a signed 10-bit
2322 // - Constant splats are lowered to bitconverted BUILD_VECTORs if SplatBitSize
2323 // is a power of 2 less than or equal to 64 and the value does not fit into a
2324 // signed 10-bit immediate
2325 // - Non-constant splats are legal as-is.
2326 // - Non-constant non-splats are lowered to sequences of INSERT_VECTOR_ELT.
2327 // - All others are illegal and must be expanded.
2328 SDValue MipsSETargetLowering::lowerBUILD_VECTOR(SDValue Op,
2329 SelectionDAG &DAG) const {
2330 BuildVectorSDNode *Node = cast<BuildVectorSDNode>(Op);
2331 EVT ResTy = Op->getValueType(0);
2333 APInt SplatValue, SplatUndef;
2334 unsigned SplatBitSize;
2337 if (!Subtarget.hasMSA() || !ResTy.is128BitVector())
2340 if (Node->isConstantSplat(SplatValue, SplatUndef, SplatBitSize,
2342 !Subtarget.isLittle()) && SplatBitSize <= 64) {
2343 // We can only cope with 8, 16, 32, or 64-bit elements
2344 if (SplatBitSize != 8 && SplatBitSize != 16 && SplatBitSize != 32 &&
2348 // If the value fits into a simm10 then we can use ldi.[bhwd]
2349 // However, if it isn't an integer type we will have to bitcast from an
2350 // integer type first. Also, if there are any undefs, we must lower them
2351 // to defined values first.
2352 if (ResTy.isInteger() && !HasAnyUndefs && SplatValue.isSignedIntN(10))
2357 switch (SplatBitSize) {
2361 ViaVecTy = MVT::v16i8;
2364 ViaVecTy = MVT::v8i16;
2367 ViaVecTy = MVT::v4i32;
2370 // There's no fill.d to fall back on for 64-bit values
2374 // SelectionDAG::getConstant will promote SplatValue appropriately.
2375 SDValue Result = DAG.getConstant(SplatValue, DL, ViaVecTy);
2377 // Bitcast to the type we originally wanted
2378 if (ViaVecTy != ResTy)
2379 Result = DAG.getNode(ISD::BITCAST, SDLoc(Node), ResTy, Result);
2382 } else if (isSplatVector(Node))
2384 else if (!isConstantOrUndefBUILD_VECTOR(Node)) {
2385 // Use INSERT_VECTOR_ELT operations rather than expand to stores.
2386 // The resulting code is the same length as the expansion, but it doesn't
2387 // use memory operations
2388 EVT ResTy = Node->getValueType(0);
2390 assert(ResTy.isVector());
2392 unsigned NumElts = ResTy.getVectorNumElements();
2393 SDValue Vector = DAG.getUNDEF(ResTy);
2394 for (unsigned i = 0; i < NumElts; ++i) {
2395 Vector = DAG.getNode(ISD::INSERT_VECTOR_ELT, DL, ResTy, Vector,
2396 Node->getOperand(i),
2397 DAG.getConstant(i, DL, MVT::i32));
2405 // Lower VECTOR_SHUFFLE into SHF (if possible).
2407 // SHF splits the vector into blocks of four elements, then shuffles these
2408 // elements according to a <4 x i2> constant (encoded as an integer immediate).
2410 // It is therefore possible to lower into SHF when the mask takes the form:
2411 // <a, b, c, d, a+4, b+4, c+4, d+4, a+8, b+8, c+8, d+8, ...>
2412 // When undef's appear they are treated as if they were whatever value is
2413 // necessary in order to fit the above form.
2416 // %2 = shufflevector <8 x i16> %0, <8 x i16> undef,
2417 // <8 x i32> <i32 3, i32 2, i32 1, i32 0,
2418 // i32 7, i32 6, i32 5, i32 4>
2420 // (SHF_H $w0, $w1, 27)
2421 // where the 27 comes from:
2422 // 3 + (2 << 2) + (1 << 4) + (0 << 6)
2423 static SDValue lowerVECTOR_SHUFFLE_SHF(SDValue Op, EVT ResTy,
2424 SmallVector<int, 16> Indices,
2425 SelectionDAG &DAG) {
2426 int SHFIndices[4] = { -1, -1, -1, -1 };
2428 if (Indices.size() < 4)
2431 for (unsigned i = 0; i < 4; ++i) {
2432 for (unsigned j = i; j < Indices.size(); j += 4) {
2433 int Idx = Indices[j];
2435 // Convert from vector index to 4-element subvector index
2436 // If an index refers to an element outside of the subvector then give up
2439 if (Idx < 0 || Idx >= 4)
2443 // If the mask has an undef, replace it with the current index.
2444 // Note that it might still be undef if the current index is also undef
2445 if (SHFIndices[i] == -1)
2446 SHFIndices[i] = Idx;
2448 // Check that non-undef values are the same as in the mask. If they
2449 // aren't then give up
2450 if (!(Idx == -1 || Idx == SHFIndices[i]))
2455 // Calculate the immediate. Replace any remaining undefs with zero
2457 for (int i = 3; i >= 0; --i) {
2458 int Idx = SHFIndices[i];
2468 return DAG.getNode(MipsISD::SHF, DL, ResTy,
2469 DAG.getConstant(Imm, DL, MVT::i32), Op->getOperand(0));
2472 // Lower VECTOR_SHUFFLE into ILVEV (if possible).
2474 // ILVEV interleaves the even elements from each vector.
2476 // It is possible to lower into ILVEV when the mask takes the form:
2477 // <0, n, 2, n+2, 4, n+4, ...>
2478 // where n is the number of elements in the vector.
2480 // When undef's appear in the mask they are treated as if they were whatever
2481 // value is necessary in order to fit the above form.
2482 static SDValue lowerVECTOR_SHUFFLE_ILVEV(SDValue Op, EVT ResTy,
2483 SmallVector<int, 16> Indices,
2484 SelectionDAG &DAG) {
2485 assert ((Indices.size() % 2) == 0);
2487 int WtIdx = ResTy.getVectorNumElements();
2489 for (unsigned i = 0; i < Indices.size(); i += 2) {
2490 if (Indices[i] != -1 && Indices[i] != WsIdx)
2492 if (Indices[i+1] != -1 && Indices[i+1] != WtIdx)
2498 return DAG.getNode(MipsISD::ILVEV, SDLoc(Op), ResTy, Op->getOperand(0),
2502 // Lower VECTOR_SHUFFLE into ILVOD (if possible).
2504 // ILVOD interleaves the odd elements from each vector.
2506 // It is possible to lower into ILVOD when the mask takes the form:
2507 // <1, n+1, 3, n+3, 5, n+5, ...>
2508 // where n is the number of elements in the vector.
2510 // When undef's appear in the mask they are treated as if they were whatever
2511 // value is necessary in order to fit the above form.
2512 static SDValue lowerVECTOR_SHUFFLE_ILVOD(SDValue Op, EVT ResTy,
2513 SmallVector<int, 16> Indices,
2514 SelectionDAG &DAG) {
2515 assert ((Indices.size() % 2) == 0);
2517 int WtIdx = ResTy.getVectorNumElements() + 1;
2519 for (unsigned i = 0; i < Indices.size(); i += 2) {
2520 if (Indices[i] != -1 && Indices[i] != WsIdx)
2522 if (Indices[i+1] != -1 && Indices[i+1] != WtIdx)
2528 return DAG.getNode(MipsISD::ILVOD, SDLoc(Op), ResTy, Op->getOperand(0),
2532 // Lower VECTOR_SHUFFLE into ILVL (if possible).
2534 // ILVL interleaves consecutive elements from the left half of each vector.
2536 // It is possible to lower into ILVL when the mask takes the form:
2537 // <0, n, 1, n+1, 2, n+2, ...>
2538 // where n is the number of elements in the vector.
2540 // When undef's appear in the mask they are treated as if they were whatever
2541 // value is necessary in order to fit the above form.
2542 static SDValue lowerVECTOR_SHUFFLE_ILVL(SDValue Op, EVT ResTy,
2543 SmallVector<int, 16> Indices,
2544 SelectionDAG &DAG) {
2545 assert ((Indices.size() % 2) == 0);
2547 int WtIdx = ResTy.getVectorNumElements();
2549 for (unsigned i = 0; i < Indices.size(); i += 2) {
2550 if (Indices[i] != -1 && Indices[i] != WsIdx)
2552 if (Indices[i+1] != -1 && Indices[i+1] != WtIdx)
2558 return DAG.getNode(MipsISD::ILVL, SDLoc(Op), ResTy, Op->getOperand(0),
2562 // Lower VECTOR_SHUFFLE into ILVR (if possible).
2564 // ILVR interleaves consecutive elements from the right half of each vector.
2566 // It is possible to lower into ILVR when the mask takes the form:
2567 // <x, n+x, x+1, n+x+1, x+2, n+x+2, ...>
2568 // where n is the number of elements in the vector and x is half n.
2570 // When undef's appear in the mask they are treated as if they were whatever
2571 // value is necessary in order to fit the above form.
2572 static SDValue lowerVECTOR_SHUFFLE_ILVR(SDValue Op, EVT ResTy,
2573 SmallVector<int, 16> Indices,
2574 SelectionDAG &DAG) {
2575 assert ((Indices.size() % 2) == 0);
2576 unsigned NumElts = ResTy.getVectorNumElements();
2577 int WsIdx = NumElts / 2;
2578 int WtIdx = NumElts + NumElts / 2;
2580 for (unsigned i = 0; i < Indices.size(); i += 2) {
2581 if (Indices[i] != -1 && Indices[i] != WsIdx)
2583 if (Indices[i+1] != -1 && Indices[i+1] != WtIdx)
2589 return DAG.getNode(MipsISD::ILVR, SDLoc(Op), ResTy, Op->getOperand(0),
2593 // Lower VECTOR_SHUFFLE into PCKEV (if possible).
2595 // PCKEV copies the even elements of each vector into the result vector.
2597 // It is possible to lower into PCKEV when the mask takes the form:
2598 // <0, 2, 4, ..., n, n+2, n+4, ...>
2599 // where n is the number of elements in the vector.
2601 // When undef's appear in the mask they are treated as if they were whatever
2602 // value is necessary in order to fit the above form.
2603 static SDValue lowerVECTOR_SHUFFLE_PCKEV(SDValue Op, EVT ResTy,
2604 SmallVector<int, 16> Indices,
2605 SelectionDAG &DAG) {
2606 assert ((Indices.size() % 2) == 0);
2609 for (unsigned i = 0; i < Indices.size(); ++i) {
2610 if (Indices[i] != -1 && Indices[i] != Idx)
2615 return DAG.getNode(MipsISD::PCKEV, SDLoc(Op), ResTy, Op->getOperand(0),
2619 // Lower VECTOR_SHUFFLE into PCKOD (if possible).
2621 // PCKOD copies the odd elements of each vector into the result vector.
2623 // It is possible to lower into PCKOD when the mask takes the form:
2624 // <1, 3, 5, ..., n+1, n+3, n+5, ...>
2625 // where n is the number of elements in the vector.
2627 // When undef's appear in the mask they are treated as if they were whatever
2628 // value is necessary in order to fit the above form.
2629 static SDValue lowerVECTOR_SHUFFLE_PCKOD(SDValue Op, EVT ResTy,
2630 SmallVector<int, 16> Indices,
2631 SelectionDAG &DAG) {
2632 assert ((Indices.size() % 2) == 0);
2635 for (unsigned i = 0; i < Indices.size(); ++i) {
2636 if (Indices[i] != -1 && Indices[i] != Idx)
2641 return DAG.getNode(MipsISD::PCKOD, SDLoc(Op), ResTy, Op->getOperand(0),
2645 // Lower VECTOR_SHUFFLE into VSHF.
2647 // This mostly consists of converting the shuffle indices in Indices into a
2648 // BUILD_VECTOR and adding it as an operand to the resulting VSHF. There is
2649 // also code to eliminate unused operands of the VECTOR_SHUFFLE. For example,
2650 // if the type is v8i16 and all the indices are less than 8 then the second
2651 // operand is unused and can be replaced with anything. We choose to replace it
2652 // with the used operand since this reduces the number of instructions overall.
2653 static SDValue lowerVECTOR_SHUFFLE_VSHF(SDValue Op, EVT ResTy,
2654 SmallVector<int, 16> Indices,
2655 SelectionDAG &DAG) {
2656 SmallVector<SDValue, 16> Ops;
2659 EVT MaskVecTy = ResTy.changeVectorElementTypeToInteger();
2660 EVT MaskEltTy = MaskVecTy.getVectorElementType();
2661 bool Using1stVec = false;
2662 bool Using2ndVec = false;
2664 int ResTyNumElts = ResTy.getVectorNumElements();
2666 for (int i = 0; i < ResTyNumElts; ++i) {
2667 // Idx == -1 means UNDEF
2668 int Idx = Indices[i];
2670 if (0 <= Idx && Idx < ResTyNumElts)
2672 if (ResTyNumElts <= Idx && Idx < ResTyNumElts * 2)
2676 for (SmallVector<int, 16>::iterator I = Indices.begin(); I != Indices.end();
2678 Ops.push_back(DAG.getTargetConstant(*I, DL, MaskEltTy));
2680 SDValue MaskVec = DAG.getNode(ISD::BUILD_VECTOR, DL, MaskVecTy, Ops);
2682 if (Using1stVec && Using2ndVec) {
2683 Op0 = Op->getOperand(0);
2684 Op1 = Op->getOperand(1);
2685 } else if (Using1stVec)
2686 Op0 = Op1 = Op->getOperand(0);
2687 else if (Using2ndVec)
2688 Op0 = Op1 = Op->getOperand(1);
2690 llvm_unreachable("shuffle vector mask references neither vector operand?");
2692 // VECTOR_SHUFFLE concatenates the vectors in an vectorwise fashion.
2693 // <0b00, 0b01> + <0b10, 0b11> -> <0b00, 0b01, 0b10, 0b11>
2694 // VSHF concatenates the vectors in a bitwise fashion:
2695 // <0b00, 0b01> + <0b10, 0b11> ->
2696 // 0b0100 + 0b1110 -> 0b01001110
2697 // <0b10, 0b11, 0b00, 0b01>
2698 // We must therefore swap the operands to get the correct result.
2699 return DAG.getNode(MipsISD::VSHF, DL, ResTy, MaskVec, Op1, Op0);
2702 // Lower VECTOR_SHUFFLE into one of a number of instructions depending on the
2703 // indices in the shuffle.
2704 SDValue MipsSETargetLowering::lowerVECTOR_SHUFFLE(SDValue Op,
2705 SelectionDAG &DAG) const {
2706 ShuffleVectorSDNode *Node = cast<ShuffleVectorSDNode>(Op);
2707 EVT ResTy = Op->getValueType(0);
2709 if (!ResTy.is128BitVector())
2712 int ResTyNumElts = ResTy.getVectorNumElements();
2713 SmallVector<int, 16> Indices;
2715 for (int i = 0; i < ResTyNumElts; ++i)
2716 Indices.push_back(Node->getMaskElt(i));
2718 SDValue Result = lowerVECTOR_SHUFFLE_SHF(Op, ResTy, Indices, DAG);
2719 if (Result.getNode())
2721 Result = lowerVECTOR_SHUFFLE_ILVEV(Op, ResTy, Indices, DAG);
2722 if (Result.getNode())
2724 Result = lowerVECTOR_SHUFFLE_ILVOD(Op, ResTy, Indices, DAG);
2725 if (Result.getNode())
2727 Result = lowerVECTOR_SHUFFLE_ILVL(Op, ResTy, Indices, DAG);
2728 if (Result.getNode())
2730 Result = lowerVECTOR_SHUFFLE_ILVR(Op, ResTy, Indices, DAG);
2731 if (Result.getNode())
2733 Result = lowerVECTOR_SHUFFLE_PCKEV(Op, ResTy, Indices, DAG);
2734 if (Result.getNode())
2736 Result = lowerVECTOR_SHUFFLE_PCKOD(Op, ResTy, Indices, DAG);
2737 if (Result.getNode())
2739 return lowerVECTOR_SHUFFLE_VSHF(Op, ResTy, Indices, DAG);
2742 MachineBasicBlock * MipsSETargetLowering::
2743 emitBPOSGE32(MachineInstr *MI, MachineBasicBlock *BB) const{
2745 // bposge32_pseudo $vr0
2755 // $vr0 = phi($vr2, $fbb, $vr1, $tbb)
2757 MachineRegisterInfo &RegInfo = BB->getParent()->getRegInfo();
2758 const TargetInstrInfo *TII = Subtarget.getInstrInfo();
2759 const TargetRegisterClass *RC = &Mips::GPR32RegClass;
2760 DebugLoc DL = MI->getDebugLoc();
2761 const BasicBlock *LLVM_BB = BB->getBasicBlock();
2762 MachineFunction::iterator It = std::next(MachineFunction::iterator(BB));
2763 MachineFunction *F = BB->getParent();
2764 MachineBasicBlock *FBB = F->CreateMachineBasicBlock(LLVM_BB);
2765 MachineBasicBlock *TBB = F->CreateMachineBasicBlock(LLVM_BB);
2766 MachineBasicBlock *Sink = F->CreateMachineBasicBlock(LLVM_BB);
2769 F->insert(It, Sink);
2771 // Transfer the remainder of BB and its successor edges to Sink.
2772 Sink->splice(Sink->begin(), BB, std::next(MachineBasicBlock::iterator(MI)),
2774 Sink->transferSuccessorsAndUpdatePHIs(BB);
2777 BB->addSuccessor(FBB);
2778 BB->addSuccessor(TBB);
2779 FBB->addSuccessor(Sink);
2780 TBB->addSuccessor(Sink);
2782 // Insert the real bposge32 instruction to $BB.
2783 BuildMI(BB, DL, TII->get(Mips::BPOSGE32)).addMBB(TBB);
2786 unsigned VR2 = RegInfo.createVirtualRegister(RC);
2787 BuildMI(*FBB, FBB->end(), DL, TII->get(Mips::ADDiu), VR2)
2788 .addReg(Mips::ZERO).addImm(0);
2789 BuildMI(*FBB, FBB->end(), DL, TII->get(Mips::B)).addMBB(Sink);
2792 unsigned VR1 = RegInfo.createVirtualRegister(RC);
2793 BuildMI(*TBB, TBB->end(), DL, TII->get(Mips::ADDiu), VR1)
2794 .addReg(Mips::ZERO).addImm(1);
2796 // Insert phi function to $Sink.
2797 BuildMI(*Sink, Sink->begin(), DL, TII->get(Mips::PHI),
2798 MI->getOperand(0).getReg())
2799 .addReg(VR2).addMBB(FBB).addReg(VR1).addMBB(TBB);
2801 MI->eraseFromParent(); // The pseudo instruction is gone now.
2805 MachineBasicBlock * MipsSETargetLowering::
2806 emitMSACBranchPseudo(MachineInstr *MI, MachineBasicBlock *BB,
2807 unsigned BranchOp) const{
2809 // vany_nonzero $rd, $ws
2820 // $rd = phi($rd1, $fbb, $rd2, $tbb)
2822 MachineRegisterInfo &RegInfo = BB->getParent()->getRegInfo();
2823 const TargetInstrInfo *TII = Subtarget.getInstrInfo();
2824 const TargetRegisterClass *RC = &Mips::GPR32RegClass;
2825 DebugLoc DL = MI->getDebugLoc();
2826 const BasicBlock *LLVM_BB = BB->getBasicBlock();
2827 MachineFunction::iterator It = std::next(MachineFunction::iterator(BB));
2828 MachineFunction *F = BB->getParent();
2829 MachineBasicBlock *FBB = F->CreateMachineBasicBlock(LLVM_BB);
2830 MachineBasicBlock *TBB = F->CreateMachineBasicBlock(LLVM_BB);
2831 MachineBasicBlock *Sink = F->CreateMachineBasicBlock(LLVM_BB);
2834 F->insert(It, Sink);
2836 // Transfer the remainder of BB and its successor edges to Sink.
2837 Sink->splice(Sink->begin(), BB, std::next(MachineBasicBlock::iterator(MI)),
2839 Sink->transferSuccessorsAndUpdatePHIs(BB);
2842 BB->addSuccessor(FBB);
2843 BB->addSuccessor(TBB);
2844 FBB->addSuccessor(Sink);
2845 TBB->addSuccessor(Sink);
2847 // Insert the real bnz.b instruction to $BB.
2848 BuildMI(BB, DL, TII->get(BranchOp))
2849 .addReg(MI->getOperand(1).getReg())
2853 unsigned RD1 = RegInfo.createVirtualRegister(RC);
2854 BuildMI(*FBB, FBB->end(), DL, TII->get(Mips::ADDiu), RD1)
2855 .addReg(Mips::ZERO).addImm(0);
2856 BuildMI(*FBB, FBB->end(), DL, TII->get(Mips::B)).addMBB(Sink);
2859 unsigned RD2 = RegInfo.createVirtualRegister(RC);
2860 BuildMI(*TBB, TBB->end(), DL, TII->get(Mips::ADDiu), RD2)
2861 .addReg(Mips::ZERO).addImm(1);
2863 // Insert phi function to $Sink.
2864 BuildMI(*Sink, Sink->begin(), DL, TII->get(Mips::PHI),
2865 MI->getOperand(0).getReg())
2866 .addReg(RD1).addMBB(FBB).addReg(RD2).addMBB(TBB);
2868 MI->eraseFromParent(); // The pseudo instruction is gone now.
2872 // Emit the COPY_FW pseudo instruction.
2874 // copy_fw_pseudo $fd, $ws, n
2876 // copy_u_w $rt, $ws, $n
2879 // When n is zero, the equivalent operation can be performed with (potentially)
2880 // zero instructions due to register overlaps. This optimization is never valid
2881 // for lane 1 because it would require FR=0 mode which isn't supported by MSA.
2882 MachineBasicBlock * MipsSETargetLowering::
2883 emitCOPY_FW(MachineInstr *MI, MachineBasicBlock *BB) const{
2884 const TargetInstrInfo *TII = Subtarget.getInstrInfo();
2885 MachineRegisterInfo &RegInfo = BB->getParent()->getRegInfo();
2886 DebugLoc DL = MI->getDebugLoc();
2887 unsigned Fd = MI->getOperand(0).getReg();
2888 unsigned Ws = MI->getOperand(1).getReg();
2889 unsigned Lane = MI->getOperand(2).getImm();
2893 if (!Subtarget.useOddSPReg()) {
2894 // We must copy to an even-numbered MSA register so that the
2895 // single-precision sub-register is also guaranteed to be even-numbered.
2896 Wt = RegInfo.createVirtualRegister(&Mips::MSA128WEvensRegClass);
2898 BuildMI(*BB, MI, DL, TII->get(Mips::COPY), Wt).addReg(Ws);
2901 BuildMI(*BB, MI, DL, TII->get(Mips::COPY), Fd).addReg(Wt, 0, Mips::sub_lo);
2903 unsigned Wt = RegInfo.createVirtualRegister(
2904 Subtarget.useOddSPReg() ? &Mips::MSA128WRegClass :
2905 &Mips::MSA128WEvensRegClass);
2907 BuildMI(*BB, MI, DL, TII->get(Mips::SPLATI_W), Wt).addReg(Ws).addImm(Lane);
2908 BuildMI(*BB, MI, DL, TII->get(Mips::COPY), Fd).addReg(Wt, 0, Mips::sub_lo);
2911 MI->eraseFromParent(); // The pseudo instruction is gone now.
2915 // Emit the COPY_FD pseudo instruction.
2917 // copy_fd_pseudo $fd, $ws, n
2919 // splati.d $wt, $ws, $n
2920 // copy $fd, $wt:sub_64
2922 // When n is zero, the equivalent operation can be performed with (potentially)
2923 // zero instructions due to register overlaps. This optimization is always
2924 // valid because FR=1 mode which is the only supported mode in MSA.
2925 MachineBasicBlock * MipsSETargetLowering::
2926 emitCOPY_FD(MachineInstr *MI, MachineBasicBlock *BB) const{
2927 assert(Subtarget.isFP64bit());
2929 const TargetInstrInfo *TII = Subtarget.getInstrInfo();
2930 MachineRegisterInfo &RegInfo = BB->getParent()->getRegInfo();
2931 unsigned Fd = MI->getOperand(0).getReg();
2932 unsigned Ws = MI->getOperand(1).getReg();
2933 unsigned Lane = MI->getOperand(2).getImm() * 2;
2934 DebugLoc DL = MI->getDebugLoc();
2937 BuildMI(*BB, MI, DL, TII->get(Mips::COPY), Fd).addReg(Ws, 0, Mips::sub_64);
2939 unsigned Wt = RegInfo.createVirtualRegister(&Mips::MSA128DRegClass);
2941 BuildMI(*BB, MI, DL, TII->get(Mips::SPLATI_D), Wt).addReg(Ws).addImm(1);
2942 BuildMI(*BB, MI, DL, TII->get(Mips::COPY), Fd).addReg(Wt, 0, Mips::sub_64);
2945 MI->eraseFromParent(); // The pseudo instruction is gone now.
2949 // Emit the INSERT_FW pseudo instruction.
2951 // insert_fw_pseudo $wd, $wd_in, $n, $fs
2953 // subreg_to_reg $wt:sub_lo, $fs
2954 // insve_w $wd[$n], $wd_in, $wt[0]
2956 MipsSETargetLowering::emitINSERT_FW(MachineInstr *MI,
2957 MachineBasicBlock *BB) const {
2958 const TargetInstrInfo *TII = Subtarget.getInstrInfo();
2959 MachineRegisterInfo &RegInfo = BB->getParent()->getRegInfo();
2960 DebugLoc DL = MI->getDebugLoc();
2961 unsigned Wd = MI->getOperand(0).getReg();
2962 unsigned Wd_in = MI->getOperand(1).getReg();
2963 unsigned Lane = MI->getOperand(2).getImm();
2964 unsigned Fs = MI->getOperand(3).getReg();
2965 unsigned Wt = RegInfo.createVirtualRegister(
2966 Subtarget.useOddSPReg() ? &Mips::MSA128WRegClass :
2967 &Mips::MSA128WEvensRegClass);
2969 BuildMI(*BB, MI, DL, TII->get(Mips::SUBREG_TO_REG), Wt)
2972 .addImm(Mips::sub_lo);
2973 BuildMI(*BB, MI, DL, TII->get(Mips::INSVE_W), Wd)
2979 MI->eraseFromParent(); // The pseudo instruction is gone now.
2983 // Emit the INSERT_FD pseudo instruction.
2985 // insert_fd_pseudo $wd, $fs, n
2987 // subreg_to_reg $wt:sub_64, $fs
2988 // insve_d $wd[$n], $wd_in, $wt[0]
2990 MipsSETargetLowering::emitINSERT_FD(MachineInstr *MI,
2991 MachineBasicBlock *BB) const {
2992 assert(Subtarget.isFP64bit());
2994 const TargetInstrInfo *TII = Subtarget.getInstrInfo();
2995 MachineRegisterInfo &RegInfo = BB->getParent()->getRegInfo();
2996 DebugLoc DL = MI->getDebugLoc();
2997 unsigned Wd = MI->getOperand(0).getReg();
2998 unsigned Wd_in = MI->getOperand(1).getReg();
2999 unsigned Lane = MI->getOperand(2).getImm();
3000 unsigned Fs = MI->getOperand(3).getReg();
3001 unsigned Wt = RegInfo.createVirtualRegister(&Mips::MSA128DRegClass);
3003 BuildMI(*BB, MI, DL, TII->get(Mips::SUBREG_TO_REG), Wt)
3006 .addImm(Mips::sub_64);
3007 BuildMI(*BB, MI, DL, TII->get(Mips::INSVE_D), Wd)
3013 MI->eraseFromParent(); // The pseudo instruction is gone now.
3017 // Emit the INSERT_([BHWD]|F[WD])_VIDX pseudo instruction.
3020 // (INSERT_([BHWD]|F[WD])_PSEUDO $wd, $wd_in, $n, $rs)
3022 // (SLL $lanetmp1, $lane, <log2size)
3023 // (SLD_B $wdtmp1, $wd_in, $wd_in, $lanetmp1)
3024 // (INSERT_[BHWD], $wdtmp2, $wdtmp1, 0, $rs)
3025 // (NEG $lanetmp2, $lanetmp1)
3026 // (SLD_B $wd, $wdtmp2, $wdtmp2, $lanetmp2)
3028 // For floating point:
3029 // (INSERT_([BHWD]|F[WD])_PSEUDO $wd, $wd_in, $n, $fs)
3031 // (SUBREG_TO_REG $wt, $fs, <subreg>)
3032 // (SLL $lanetmp1, $lane, <log2size)
3033 // (SLD_B $wdtmp1, $wd_in, $wd_in, $lanetmp1)
3034 // (INSVE_[WD], $wdtmp2, 0, $wdtmp1, 0)
3035 // (NEG $lanetmp2, $lanetmp1)
3036 // (SLD_B $wd, $wdtmp2, $wdtmp2, $lanetmp2)
3038 MipsSETargetLowering::emitINSERT_DF_VIDX(MachineInstr *MI,
3039 MachineBasicBlock *BB,
3040 unsigned EltSizeInBytes,
3042 const TargetInstrInfo *TII = Subtarget.getInstrInfo();
3043 MachineRegisterInfo &RegInfo = BB->getParent()->getRegInfo();
3044 DebugLoc DL = MI->getDebugLoc();
3045 unsigned Wd = MI->getOperand(0).getReg();
3046 unsigned SrcVecReg = MI->getOperand(1).getReg();
3047 unsigned LaneReg = MI->getOperand(2).getReg();
3048 unsigned SrcValReg = MI->getOperand(3).getReg();
3050 const TargetRegisterClass *VecRC = nullptr;
3051 const TargetRegisterClass *GPRRC =
3052 Subtarget.isABI_N64() ? &Mips::GPR64RegClass : &Mips::GPR32RegClass;
3053 unsigned EltLog2Size;
3054 unsigned InsertOp = 0;
3055 unsigned InsveOp = 0;
3056 switch (EltSizeInBytes) {
3058 llvm_unreachable("Unexpected size");
3061 InsertOp = Mips::INSERT_B;
3062 InsveOp = Mips::INSVE_B;
3063 VecRC = &Mips::MSA128BRegClass;
3067 InsertOp = Mips::INSERT_H;
3068 InsveOp = Mips::INSVE_H;
3069 VecRC = &Mips::MSA128HRegClass;
3073 InsertOp = Mips::INSERT_W;
3074 InsveOp = Mips::INSVE_W;
3075 VecRC = &Mips::MSA128WRegClass;
3079 InsertOp = Mips::INSERT_D;
3080 InsveOp = Mips::INSVE_D;
3081 VecRC = &Mips::MSA128DRegClass;
3086 unsigned Wt = RegInfo.createVirtualRegister(VecRC);
3087 BuildMI(*BB, MI, DL, TII->get(Mips::SUBREG_TO_REG), Wt)
3090 .addImm(EltSizeInBytes == 8 ? Mips::sub_64 : Mips::sub_lo);
3094 // Convert the lane index into a byte index
3095 if (EltSizeInBytes != 1) {
3096 unsigned LaneTmp1 = RegInfo.createVirtualRegister(GPRRC);
3097 BuildMI(*BB, MI, DL, TII->get(Mips::SLL), LaneTmp1)
3099 .addImm(EltLog2Size);
3103 // Rotate bytes around so that the desired lane is element zero
3104 unsigned WdTmp1 = RegInfo.createVirtualRegister(VecRC);
3105 BuildMI(*BB, MI, DL, TII->get(Mips::SLD_B), WdTmp1)
3110 unsigned WdTmp2 = RegInfo.createVirtualRegister(VecRC);
3112 // Use insve.df to insert to element zero
3113 BuildMI(*BB, MI, DL, TII->get(InsveOp), WdTmp2)
3119 // Use insert.df to insert to element zero
3120 BuildMI(*BB, MI, DL, TII->get(InsertOp), WdTmp2)
3126 // Rotate elements the rest of the way for a full rotation.
3127 // sld.df inteprets $rt modulo the number of columns so we only need to negate
3128 // the lane index to do this.
3129 unsigned LaneTmp2 = RegInfo.createVirtualRegister(GPRRC);
3130 BuildMI(*BB, MI, DL, TII->get(Subtarget.isABI_N64() ? Mips::DSUB : Mips::SUB),
3132 .addReg(Subtarget.isABI_N64() ? Mips::ZERO_64 : Mips::ZERO)
3134 BuildMI(*BB, MI, DL, TII->get(Mips::SLD_B), Wd)
3139 MI->eraseFromParent(); // The pseudo instruction is gone now.
3143 // Emit the FILL_FW pseudo instruction.
3145 // fill_fw_pseudo $wd, $fs
3147 // implicit_def $wt1
3148 // insert_subreg $wt2:subreg_lo, $wt1, $fs
3149 // splati.w $wd, $wt2[0]
3151 MipsSETargetLowering::emitFILL_FW(MachineInstr *MI,
3152 MachineBasicBlock *BB) const {
3153 const TargetInstrInfo *TII = Subtarget.getInstrInfo();
3154 MachineRegisterInfo &RegInfo = BB->getParent()->getRegInfo();
3155 DebugLoc DL = MI->getDebugLoc();
3156 unsigned Wd = MI->getOperand(0).getReg();
3157 unsigned Fs = MI->getOperand(1).getReg();
3158 unsigned Wt1 = RegInfo.createVirtualRegister(&Mips::MSA128WRegClass);
3159 unsigned Wt2 = RegInfo.createVirtualRegister(&Mips::MSA128WRegClass);
3161 BuildMI(*BB, MI, DL, TII->get(Mips::IMPLICIT_DEF), Wt1);
3162 BuildMI(*BB, MI, DL, TII->get(Mips::INSERT_SUBREG), Wt2)
3165 .addImm(Mips::sub_lo);
3166 BuildMI(*BB, MI, DL, TII->get(Mips::SPLATI_W), Wd).addReg(Wt2).addImm(0);
3168 MI->eraseFromParent(); // The pseudo instruction is gone now.
3172 // Emit the FILL_FD pseudo instruction.
3174 // fill_fd_pseudo $wd, $fs
3176 // implicit_def $wt1
3177 // insert_subreg $wt2:subreg_64, $wt1, $fs
3178 // splati.d $wd, $wt2[0]
3180 MipsSETargetLowering::emitFILL_FD(MachineInstr *MI,
3181 MachineBasicBlock *BB) const {
3182 assert(Subtarget.isFP64bit());
3184 const TargetInstrInfo *TII = Subtarget.getInstrInfo();
3185 MachineRegisterInfo &RegInfo = BB->getParent()->getRegInfo();
3186 DebugLoc DL = MI->getDebugLoc();
3187 unsigned Wd = MI->getOperand(0).getReg();
3188 unsigned Fs = MI->getOperand(1).getReg();
3189 unsigned Wt1 = RegInfo.createVirtualRegister(&Mips::MSA128DRegClass);
3190 unsigned Wt2 = RegInfo.createVirtualRegister(&Mips::MSA128DRegClass);
3192 BuildMI(*BB, MI, DL, TII->get(Mips::IMPLICIT_DEF), Wt1);
3193 BuildMI(*BB, MI, DL, TII->get(Mips::INSERT_SUBREG), Wt2)
3196 .addImm(Mips::sub_64);
3197 BuildMI(*BB, MI, DL, TII->get(Mips::SPLATI_D), Wd).addReg(Wt2).addImm(0);
3199 MI->eraseFromParent(); // The pseudo instruction is gone now.
3203 // Emit the FEXP2_W_1 pseudo instructions.
3205 // fexp2_w_1_pseudo $wd, $wt
3208 // fexp2.w $wd, $ws, $wt
3210 MipsSETargetLowering::emitFEXP2_W_1(MachineInstr *MI,
3211 MachineBasicBlock *BB) const {
3212 const TargetInstrInfo *TII = Subtarget.getInstrInfo();
3213 MachineRegisterInfo &RegInfo = BB->getParent()->getRegInfo();
3214 const TargetRegisterClass *RC = &Mips::MSA128WRegClass;
3215 unsigned Ws1 = RegInfo.createVirtualRegister(RC);
3216 unsigned Ws2 = RegInfo.createVirtualRegister(RC);
3217 DebugLoc DL = MI->getDebugLoc();
3219 // Splat 1.0 into a vector
3220 BuildMI(*BB, MI, DL, TII->get(Mips::LDI_W), Ws1).addImm(1);
3221 BuildMI(*BB, MI, DL, TII->get(Mips::FFINT_U_W), Ws2).addReg(Ws1);
3223 // Emit 1.0 * fexp2(Wt)
3224 BuildMI(*BB, MI, DL, TII->get(Mips::FEXP2_W), MI->getOperand(0).getReg())
3226 .addReg(MI->getOperand(1).getReg());
3228 MI->eraseFromParent(); // The pseudo instruction is gone now.
3232 // Emit the FEXP2_D_1 pseudo instructions.
3234 // fexp2_d_1_pseudo $wd, $wt
3237 // fexp2.d $wd, $ws, $wt
3239 MipsSETargetLowering::emitFEXP2_D_1(MachineInstr *MI,
3240 MachineBasicBlock *BB) const {
3241 const TargetInstrInfo *TII = Subtarget.getInstrInfo();
3242 MachineRegisterInfo &RegInfo = BB->getParent()->getRegInfo();
3243 const TargetRegisterClass *RC = &Mips::MSA128DRegClass;
3244 unsigned Ws1 = RegInfo.createVirtualRegister(RC);
3245 unsigned Ws2 = RegInfo.createVirtualRegister(RC);
3246 DebugLoc DL = MI->getDebugLoc();
3248 // Splat 1.0 into a vector
3249 BuildMI(*BB, MI, DL, TII->get(Mips::LDI_D), Ws1).addImm(1);
3250 BuildMI(*BB, MI, DL, TII->get(Mips::FFINT_U_D), Ws2).addReg(Ws1);
3252 // Emit 1.0 * fexp2(Wt)
3253 BuildMI(*BB, MI, DL, TII->get(Mips::FEXP2_D), MI->getOperand(0).getReg())
3255 .addReg(MI->getOperand(1).getReg());
3257 MI->eraseFromParent(); // The pseudo instruction is gone now.