1 //===-- SPUISelDAGToDAG.cpp - CellSPU pattern matching inst selector ------===//
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 // This file defines a pattern matching instruction selector for the Cell SPU,
11 // converting from a legalized dag to a SPU-target dag.
13 //===----------------------------------------------------------------------===//
16 #include "SPUTargetMachine.h"
17 #include "SPUISelLowering.h"
18 #include "SPUHazardRecognizers.h"
19 #include "SPUFrameInfo.h"
20 #include "SPURegisterNames.h"
21 #include "SPUTargetMachine.h"
22 #include "llvm/CodeGen/MachineConstantPool.h"
23 #include "llvm/CodeGen/MachineInstrBuilder.h"
24 #include "llvm/CodeGen/MachineFunction.h"
25 #include "llvm/CodeGen/SelectionDAG.h"
26 #include "llvm/CodeGen/SelectionDAGISel.h"
27 #include "llvm/CodeGen/PseudoSourceValue.h"
28 #include "llvm/Target/TargetOptions.h"
29 #include "llvm/ADT/Statistic.h"
30 #include "llvm/Constants.h"
31 #include "llvm/GlobalValue.h"
32 #include "llvm/Intrinsics.h"
33 #include "llvm/LLVMContext.h"
34 #include "llvm/Support/Debug.h"
35 #include "llvm/Support/ErrorHandling.h"
36 #include "llvm/Support/MathExtras.h"
37 #include "llvm/Support/Compiler.h"
38 #include "llvm/Support/raw_ostream.h"
43 //! ConstantSDNode predicate for i32 sign-extended, 10-bit immediates
45 isI64IntS10Immediate(ConstantSDNode *CN)
47 return isS10Constant(CN->getSExtValue());
50 //! ConstantSDNode predicate for i32 sign-extended, 10-bit immediates
52 isI32IntS10Immediate(ConstantSDNode *CN)
54 return isS10Constant(CN->getSExtValue());
57 //! ConstantSDNode predicate for i32 unsigned 10-bit immediate values
59 isI32IntU10Immediate(ConstantSDNode *CN)
61 return isU10Constant(CN->getSExtValue());
64 //! ConstantSDNode predicate for i16 sign-extended, 10-bit immediate values
66 isI16IntS10Immediate(ConstantSDNode *CN)
68 return isS10Constant(CN->getSExtValue());
71 //! SDNode predicate for i16 sign-extended, 10-bit immediate values
73 isI16IntS10Immediate(SDNode *N)
75 ConstantSDNode *CN = dyn_cast<ConstantSDNode>(N);
76 return (CN != 0 && isI16IntS10Immediate(CN));
79 //! ConstantSDNode predicate for i16 unsigned 10-bit immediate values
81 isI16IntU10Immediate(ConstantSDNode *CN)
83 return isU10Constant((short) CN->getZExtValue());
86 //! SDNode predicate for i16 sign-extended, 10-bit immediate values
88 isI16IntU10Immediate(SDNode *N)
90 return (N->getOpcode() == ISD::Constant
91 && isI16IntU10Immediate(cast<ConstantSDNode>(N)));
94 //! ConstantSDNode predicate for signed 16-bit values
96 \arg CN The constant SelectionDAG node holding the value
97 \arg Imm The returned 16-bit value, if returning true
99 This predicate tests the value in \a CN to see whether it can be
100 represented as a 16-bit, sign-extended quantity. Returns true if
104 isIntS16Immediate(ConstantSDNode *CN, short &Imm)
106 EVT vt = CN->getValueType(0);
107 Imm = (short) CN->getZExtValue();
108 if (vt.getSimpleVT() >= MVT::i1 && vt.getSimpleVT() <= MVT::i16) {
110 } else if (vt == MVT::i32) {
111 int32_t i_val = (int32_t) CN->getZExtValue();
112 short s_val = (short) i_val;
113 return i_val == s_val;
115 int64_t i_val = (int64_t) CN->getZExtValue();
116 short s_val = (short) i_val;
117 return i_val == s_val;
123 //! SDNode predicate for signed 16-bit values.
125 isIntS16Immediate(SDNode *N, short &Imm)
127 return (N->getOpcode() == ISD::Constant
128 && isIntS16Immediate(cast<ConstantSDNode>(N), Imm));
131 //! ConstantFPSDNode predicate for representing floats as 16-bit sign ext.
133 isFPS16Immediate(ConstantFPSDNode *FPN, short &Imm)
135 EVT vt = FPN->getValueType(0);
136 if (vt == MVT::f32) {
137 int val = FloatToBits(FPN->getValueAPF().convertToFloat());
138 int sval = (int) ((val << 16) >> 16);
147 isHighLow(const SDValue &Op)
149 return (Op.getOpcode() == SPUISD::IndirectAddr
150 && ((Op.getOperand(0).getOpcode() == SPUISD::Hi
151 && Op.getOperand(1).getOpcode() == SPUISD::Lo)
152 || (Op.getOperand(0).getOpcode() == SPUISD::Lo
153 && Op.getOperand(1).getOpcode() == SPUISD::Hi)));
156 //===------------------------------------------------------------------===//
157 //! EVT to "useful stuff" mapping structure:
159 struct valtype_map_s {
161 unsigned ldresult_ins; /// LDRESULT instruction (0 = undefined)
162 bool ldresult_imm; /// LDRESULT instruction requires immediate?
163 unsigned lrinst; /// LR instruction
166 const valtype_map_s valtype_map[] = {
167 { MVT::i8, SPU::ORBIr8, true, SPU::LRr8 },
168 { MVT::i16, SPU::ORHIr16, true, SPU::LRr16 },
169 { MVT::i32, SPU::ORIr32, true, SPU::LRr32 },
170 { MVT::i64, SPU::ORr64, false, SPU::LRr64 },
171 { MVT::f32, SPU::ORf32, false, SPU::LRf32 },
172 { MVT::f64, SPU::ORf64, false, SPU::LRf64 },
173 // vector types... (sigh!)
174 { MVT::v16i8, 0, false, SPU::LRv16i8 },
175 { MVT::v8i16, 0, false, SPU::LRv8i16 },
176 { MVT::v4i32, 0, false, SPU::LRv4i32 },
177 { MVT::v2i64, 0, false, SPU::LRv2i64 },
178 { MVT::v4f32, 0, false, SPU::LRv4f32 },
179 { MVT::v2f64, 0, false, SPU::LRv2f64 }
182 const size_t n_valtype_map = sizeof(valtype_map) / sizeof(valtype_map[0]);
184 const valtype_map_s *getValueTypeMapEntry(EVT VT)
186 const valtype_map_s *retval = 0;
187 for (size_t i = 0; i < n_valtype_map; ++i) {
188 if (valtype_map[i].VT == VT) {
189 retval = valtype_map + i;
198 raw_string_ostream Msg(msg);
199 Msg << "SPUISelDAGToDAG.cpp: getValueTypeMapEntry returns NULL for "
200 << VT.getEVTString();
201 llvm_report_error(Msg.str());
208 //! Generate the carry-generate shuffle mask.
209 SDValue getCarryGenerateShufMask(SelectionDAG &DAG, DebugLoc dl) {
210 SmallVector<SDValue, 16 > ShufBytes;
212 // Create the shuffle mask for "rotating" the borrow up one register slot
213 // once the borrow is generated.
214 ShufBytes.push_back(DAG.getConstant(0x04050607, MVT::i32));
215 ShufBytes.push_back(DAG.getConstant(0x80808080, MVT::i32));
216 ShufBytes.push_back(DAG.getConstant(0x0c0d0e0f, MVT::i32));
217 ShufBytes.push_back(DAG.getConstant(0x80808080, MVT::i32));
219 return DAG.getNode(ISD::BUILD_VECTOR, dl, MVT::v4i32,
220 &ShufBytes[0], ShufBytes.size());
223 //! Generate the borrow-generate shuffle mask
224 SDValue getBorrowGenerateShufMask(SelectionDAG &DAG, DebugLoc dl) {
225 SmallVector<SDValue, 16 > ShufBytes;
227 // Create the shuffle mask for "rotating" the borrow up one register slot
228 // once the borrow is generated.
229 ShufBytes.push_back(DAG.getConstant(0x04050607, MVT::i32));
230 ShufBytes.push_back(DAG.getConstant(0xc0c0c0c0, MVT::i32));
231 ShufBytes.push_back(DAG.getConstant(0x0c0d0e0f, MVT::i32));
232 ShufBytes.push_back(DAG.getConstant(0xc0c0c0c0, MVT::i32));
234 return DAG.getNode(ISD::BUILD_VECTOR, dl, MVT::v4i32,
235 &ShufBytes[0], ShufBytes.size());
238 //===------------------------------------------------------------------===//
239 /// SPUDAGToDAGISel - Cell SPU-specific code to select SPU machine
240 /// instructions for SelectionDAG operations.
242 class SPUDAGToDAGISel :
243 public SelectionDAGISel
245 SPUTargetMachine &TM;
246 SPUTargetLowering &SPUtli;
247 unsigned GlobalBaseReg;
250 explicit SPUDAGToDAGISel(SPUTargetMachine &tm) :
251 SelectionDAGISel(tm),
253 SPUtli(*tm.getTargetLowering())
256 virtual bool runOnMachineFunction(MachineFunction &MF) {
257 // Make sure we re-emit a set of the global base reg if necessary
259 SelectionDAGISel::runOnMachineFunction(MF);
263 /// getI32Imm - Return a target constant with the specified value, of type
265 inline SDValue getI32Imm(uint32_t Imm) {
266 return CurDAG->getTargetConstant(Imm, MVT::i32);
269 /// getI64Imm - Return a target constant with the specified value, of type
271 inline SDValue getI64Imm(uint64_t Imm) {
272 return CurDAG->getTargetConstant(Imm, MVT::i64);
275 /// getSmallIPtrImm - Return a target constant of pointer type.
276 inline SDValue getSmallIPtrImm(unsigned Imm) {
277 return CurDAG->getTargetConstant(Imm, SPUtli.getPointerTy());
280 SDNode *emitBuildVector(SDNode *bvNode) {
281 EVT vecVT = bvNode->getValueType(0);
282 EVT eltVT = vecVT.getVectorElementType();
283 DebugLoc dl = bvNode->getDebugLoc();
285 // Check to see if this vector can be represented as a CellSPU immediate
286 // constant by invoking all of the instruction selection predicates:
287 if (((vecVT == MVT::v8i16) &&
288 (SPU::get_vec_i16imm(bvNode, *CurDAG, MVT::i16).getNode() != 0)) ||
289 ((vecVT == MVT::v4i32) &&
290 ((SPU::get_vec_i16imm(bvNode, *CurDAG, MVT::i32).getNode() != 0) ||
291 (SPU::get_ILHUvec_imm(bvNode, *CurDAG, MVT::i32).getNode() != 0) ||
292 (SPU::get_vec_u18imm(bvNode, *CurDAG, MVT::i32).getNode() != 0) ||
293 (SPU::get_v4i32_imm(bvNode, *CurDAG).getNode() != 0))) ||
294 ((vecVT == MVT::v2i64) &&
295 ((SPU::get_vec_i16imm(bvNode, *CurDAG, MVT::i64).getNode() != 0) ||
296 (SPU::get_ILHUvec_imm(bvNode, *CurDAG, MVT::i64).getNode() != 0) ||
297 (SPU::get_vec_u18imm(bvNode, *CurDAG, MVT::i64).getNode() != 0)))) {
298 HandleSDNode Dummy(SDValue(bvNode, 0));
300 return Dummy.getValue().getNode();
303 // No, need to emit a constant pool spill:
304 std::vector<Constant*> CV;
306 for (size_t i = 0; i < bvNode->getNumOperands(); ++i) {
307 ConstantSDNode *V = dyn_cast<ConstantSDNode > (bvNode->getOperand(i));
308 CV.push_back(const_cast<ConstantInt *>(V->getConstantIntValue()));
311 Constant *CP = ConstantVector::get(CV);
312 SDValue CPIdx = CurDAG->getConstantPool(CP, SPUtli.getPointerTy());
313 unsigned Alignment = cast<ConstantPoolSDNode>(CPIdx)->getAlignment();
314 SDValue CGPoolOffset =
315 SPU::LowerConstantPool(CPIdx, *CurDAG,
316 SPUtli.getSPUTargetMachine());
318 HandleSDNode Dummy(CurDAG->getLoad(vecVT, dl,
319 CurDAG->getEntryNode(), CGPoolOffset,
320 PseudoSourceValue::getConstantPool(),0,
321 false, false, Alignment));
322 CurDAG->ReplaceAllUsesWith(SDValue(bvNode, 0), Dummy.getValue());
323 SelectCode(Dummy.getValue().getNode());
324 return Dummy.getValue().getNode();
327 /// Select - Convert the specified operand from a target-independent to a
328 /// target-specific node if it hasn't already been changed.
329 SDNode *Select(SDNode *N);
331 //! Emit the instruction sequence for i64 shl
332 SDNode *SelectSHLi64(SDNode *N, EVT OpVT);
334 //! Emit the instruction sequence for i64 srl
335 SDNode *SelectSRLi64(SDNode *N, EVT OpVT);
337 //! Emit the instruction sequence for i64 sra
338 SDNode *SelectSRAi64(SDNode *N, EVT OpVT);
340 //! Emit the necessary sequence for loading i64 constants:
341 SDNode *SelectI64Constant(SDNode *N, EVT OpVT, DebugLoc dl);
343 //! Alternate instruction emit sequence for loading i64 constants
344 SDNode *SelectI64Constant(uint64_t i64const, EVT OpVT, DebugLoc dl);
346 //! Returns true if the address N is an A-form (local store) address
347 bool SelectAFormAddr(SDNode *Op, SDValue N, SDValue &Base,
350 //! D-form address predicate
351 bool SelectDFormAddr(SDNode *Op, SDValue N, SDValue &Base,
354 /// Alternate D-form address using i7 offset predicate
355 bool SelectDForm2Addr(SDNode *Op, SDValue N, SDValue &Disp,
358 /// D-form address selection workhorse
359 bool DFormAddressPredicate(SDNode *Op, SDValue N, SDValue &Disp,
360 SDValue &Base, int minOffset, int maxOffset);
362 //! Address predicate if N can be expressed as an indexed [r+r] operation.
363 bool SelectXFormAddr(SDNode *Op, SDValue N, SDValue &Base,
366 /// SelectInlineAsmMemoryOperand - Implement addressing mode selection for
367 /// inline asm expressions.
368 virtual bool SelectInlineAsmMemoryOperand(const SDValue &Op,
370 std::vector<SDValue> &OutOps) {
372 switch (ConstraintCode) {
373 default: return true;
375 if (!SelectDFormAddr(Op.getNode(), Op, Op0, Op1)
376 && !SelectAFormAddr(Op.getNode(), Op, Op0, Op1))
377 SelectXFormAddr(Op.getNode(), Op, Op0, Op1);
379 case 'o': // offsetable
380 if (!SelectDFormAddr(Op.getNode(), Op, Op0, Op1)
381 && !SelectAFormAddr(Op.getNode(), Op, Op0, Op1)) {
383 Op1 = getSmallIPtrImm(0);
386 case 'v': // not offsetable
388 llvm_unreachable("InlineAsmMemoryOperand 'v' constraint not handled.");
390 SelectAddrIdxOnly(Op, Op, Op0, Op1);
395 OutOps.push_back(Op0);
396 OutOps.push_back(Op1);
400 /// InstructionSelect - This callback is invoked by
401 /// SelectionDAGISel when it has created a SelectionDAG for us to codegen.
402 virtual void InstructionSelect();
404 virtual const char *getPassName() const {
405 return "Cell SPU DAG->DAG Pattern Instruction Selection";
408 /// CreateTargetHazardRecognizer - Return the hazard recognizer to use for
409 /// this target when scheduling the DAG.
410 virtual ScheduleHazardRecognizer *CreateTargetHazardRecognizer() {
411 const TargetInstrInfo *II = TM.getInstrInfo();
412 assert(II && "No InstrInfo?");
413 return new SPUHazardRecognizer(*II);
416 // Include the pieces autogenerated from the target description.
417 #include "SPUGenDAGISel.inc"
421 /// InstructionSelect - This callback is invoked by
422 /// SelectionDAGISel when it has created a SelectionDAG for us to codegen.
424 SPUDAGToDAGISel::InstructionSelect()
426 // Select target instructions for the DAG.
428 CurDAG->RemoveDeadNodes();
432 \arg Op The ISD instruction operand
433 \arg N The address to be tested
434 \arg Base The base address
435 \arg Index The base address index
438 SPUDAGToDAGISel::SelectAFormAddr(SDNode *Op, SDValue N, SDValue &Base,
440 // These match the addr256k operand type:
441 EVT OffsVT = MVT::i16;
442 SDValue Zero = CurDAG->getTargetConstant(0, OffsVT);
444 switch (N.getOpcode()) {
446 case ISD::ConstantPool:
447 case ISD::GlobalAddress:
448 llvm_report_error("SPU SelectAFormAddr: Constant/Pool/Global not lowered.");
451 case ISD::TargetConstant:
452 case ISD::TargetGlobalAddress:
453 case ISD::TargetJumpTable:
454 llvm_report_error("SPUSelectAFormAddr: Target Constant/Pool/Global "
455 "not wrapped as A-form address.");
458 case SPUISD::AFormAddr:
459 // Just load from memory if there's only a single use of the location,
460 // otherwise, this will get handled below with D-form offset addresses
462 SDValue Op0 = N.getOperand(0);
463 switch (Op0.getOpcode()) {
464 case ISD::TargetConstantPool:
465 case ISD::TargetJumpTable:
470 case ISD::TargetGlobalAddress: {
471 GlobalAddressSDNode *GSDN = cast<GlobalAddressSDNode>(Op0);
472 GlobalValue *GV = GSDN->getGlobal();
473 if (GV->getAlignment() == 16) {
488 SPUDAGToDAGISel::SelectDForm2Addr(SDNode *Op, SDValue N, SDValue &Disp,
490 const int minDForm2Offset = -(1 << 7);
491 const int maxDForm2Offset = (1 << 7) - 1;
492 return DFormAddressPredicate(Op, N, Disp, Base, minDForm2Offset,
497 \arg Op The ISD instruction (ignored)
498 \arg N The address to be tested
499 \arg Base Base address register/pointer
500 \arg Index Base address index
502 Examine the input address by a base register plus a signed 10-bit
503 displacement, [r+I10] (D-form address).
505 \return true if \a N is a D-form address with \a Base and \a Index set
506 to non-empty SDValue instances.
509 SPUDAGToDAGISel::SelectDFormAddr(SDNode *Op, SDValue N, SDValue &Base,
511 return DFormAddressPredicate(Op, N, Base, Index,
512 SPUFrameInfo::minFrameOffset(),
513 SPUFrameInfo::maxFrameOffset());
517 SPUDAGToDAGISel::DFormAddressPredicate(SDNode *Op, SDValue N, SDValue &Base,
518 SDValue &Index, int minOffset,
520 unsigned Opc = N.getOpcode();
521 EVT PtrTy = SPUtli.getPointerTy();
523 if (Opc == ISD::FrameIndex) {
524 // Stack frame index must be less than 512 (divided by 16):
525 FrameIndexSDNode *FIN = dyn_cast<FrameIndexSDNode>(N);
526 int FI = int(FIN->getIndex());
527 DEBUG(errs() << "SelectDFormAddr: ISD::FrameIndex = "
529 if (SPUFrameInfo::FItoStackOffset(FI) < maxOffset) {
530 Base = CurDAG->getTargetConstant(0, PtrTy);
531 Index = CurDAG->getTargetFrameIndex(FI, PtrTy);
534 } else if (Opc == ISD::ADD) {
535 // Generated by getelementptr
536 const SDValue Op0 = N.getOperand(0);
537 const SDValue Op1 = N.getOperand(1);
539 if ((Op0.getOpcode() == SPUISD::Hi && Op1.getOpcode() == SPUISD::Lo)
540 || (Op1.getOpcode() == SPUISD::Hi && Op0.getOpcode() == SPUISD::Lo)) {
541 Base = CurDAG->getTargetConstant(0, PtrTy);
544 } else if (Op1.getOpcode() == ISD::Constant
545 || Op1.getOpcode() == ISD::TargetConstant) {
546 ConstantSDNode *CN = dyn_cast<ConstantSDNode>(Op1);
547 int32_t offset = int32_t(CN->getSExtValue());
549 if (Op0.getOpcode() == ISD::FrameIndex) {
550 FrameIndexSDNode *FIN = dyn_cast<FrameIndexSDNode>(Op0);
551 int FI = int(FIN->getIndex());
552 DEBUG(errs() << "SelectDFormAddr: ISD::ADD offset = " << offset
553 << " frame index = " << FI << "\n");
555 if (SPUFrameInfo::FItoStackOffset(FI) < maxOffset) {
556 Base = CurDAG->getTargetConstant(offset, PtrTy);
557 Index = CurDAG->getTargetFrameIndex(FI, PtrTy);
560 } else if (offset > minOffset && offset < maxOffset) {
561 Base = CurDAG->getTargetConstant(offset, PtrTy);
565 } else if (Op0.getOpcode() == ISD::Constant
566 || Op0.getOpcode() == ISD::TargetConstant) {
567 ConstantSDNode *CN = dyn_cast<ConstantSDNode>(Op0);
568 int32_t offset = int32_t(CN->getSExtValue());
570 if (Op1.getOpcode() == ISD::FrameIndex) {
571 FrameIndexSDNode *FIN = dyn_cast<FrameIndexSDNode>(Op1);
572 int FI = int(FIN->getIndex());
573 DEBUG(errs() << "SelectDFormAddr: ISD::ADD offset = " << offset
574 << " frame index = " << FI << "\n");
576 if (SPUFrameInfo::FItoStackOffset(FI) < maxOffset) {
577 Base = CurDAG->getTargetConstant(offset, PtrTy);
578 Index = CurDAG->getTargetFrameIndex(FI, PtrTy);
581 } else if (offset > minOffset && offset < maxOffset) {
582 Base = CurDAG->getTargetConstant(offset, PtrTy);
587 } else if (Opc == SPUISD::IndirectAddr) {
588 // Indirect with constant offset -> D-Form address
589 const SDValue Op0 = N.getOperand(0);
590 const SDValue Op1 = N.getOperand(1);
592 if (Op0.getOpcode() == SPUISD::Hi
593 && Op1.getOpcode() == SPUISD::Lo) {
594 // (SPUindirect (SPUhi <arg>, 0), (SPUlo <arg>, 0))
595 Base = CurDAG->getTargetConstant(0, PtrTy);
598 } else if (isa<ConstantSDNode>(Op0) || isa<ConstantSDNode>(Op1)) {
602 if (isa<ConstantSDNode>(Op1)) {
603 ConstantSDNode *CN = cast<ConstantSDNode>(Op1);
604 offset = int32_t(CN->getSExtValue());
606 } else if (isa<ConstantSDNode>(Op0)) {
607 ConstantSDNode *CN = cast<ConstantSDNode>(Op0);
608 offset = int32_t(CN->getSExtValue());
612 if (offset >= minOffset && offset <= maxOffset) {
613 Base = CurDAG->getTargetConstant(offset, PtrTy);
618 } else if (Opc == SPUISD::AFormAddr) {
619 Base = CurDAG->getTargetConstant(0, N.getValueType());
622 } else if (Opc == SPUISD::LDRESULT) {
623 Base = CurDAG->getTargetConstant(0, N.getValueType());
626 } else if (Opc == ISD::Register || Opc == ISD::CopyFromReg) {
627 unsigned OpOpc = Op->getOpcode();
629 if (OpOpc == ISD::STORE || OpOpc == ISD::LOAD) {
630 // Direct load/store without getelementptr
633 // Get the register from CopyFromReg
634 if (Opc == ISD::CopyFromReg)
635 Addr = N.getOperand(1);
637 Addr = N; // Register
639 Offs = ((OpOpc == ISD::STORE) ? Op->getOperand(3) : Op->getOperand(2));
641 if (Offs.getOpcode() == ISD::Constant || Offs.getOpcode() == ISD::UNDEF) {
642 if (Offs.getOpcode() == ISD::UNDEF)
643 Offs = CurDAG->getTargetConstant(0, Offs.getValueType());
650 /* If otherwise unadorned, default to D-form address with 0 offset: */
651 if (Opc == ISD::CopyFromReg) {
652 Index = N.getOperand(1);
657 Base = CurDAG->getTargetConstant(0, Index.getValueType());
666 \arg Op The ISD instruction operand
667 \arg N The address operand
668 \arg Base The base pointer operand
669 \arg Index The offset/index operand
671 If the address \a N can be expressed as an A-form or D-form address, returns
672 false. Otherwise, creates two operands, Base and Index that will become the
673 (r)(r) X-form address.
676 SPUDAGToDAGISel::SelectXFormAddr(SDNode *Op, SDValue N, SDValue &Base,
678 if (!SelectAFormAddr(Op, N, Base, Index)
679 && !SelectDFormAddr(Op, N, Base, Index)) {
680 // If the address is neither A-form or D-form, punt and use an X-form
682 Base = N.getOperand(1);
683 Index = N.getOperand(0);
690 //! Convert the operand from a target-independent to a target-specific node
694 SPUDAGToDAGISel::Select(SDNode *N) {
695 unsigned Opc = N->getOpcode();
698 EVT OpVT = N->getValueType(0);
700 DebugLoc dl = N->getDebugLoc();
702 if (N->isMachineOpcode())
703 return NULL; // Already selected.
705 if (Opc == ISD::FrameIndex) {
706 int FI = cast<FrameIndexSDNode>(N)->getIndex();
707 SDValue TFI = CurDAG->getTargetFrameIndex(FI, N->getValueType(0));
708 SDValue Imm0 = CurDAG->getTargetConstant(0, N->getValueType(0));
717 Ops[0] = CurDAG->getRegister(SPU::R1, N->getValueType(0));
718 Ops[1] = SDValue(CurDAG->getMachineNode(SPU::ILAr32, dl,
719 N->getValueType(0), TFI, Imm0),
723 } else if (Opc == ISD::Constant && OpVT == MVT::i64) {
724 // Catch the i64 constants that end up here. Note: The backend doesn't
725 // attempt to legalize the constant (it's useless because DAGCombiner
726 // will insert 64-bit constants and we can't stop it).
727 return SelectI64Constant(N, OpVT, N->getDebugLoc());
728 } else if ((Opc == ISD::ZERO_EXTEND || Opc == ISD::ANY_EXTEND)
729 && OpVT == MVT::i64) {
730 SDValue Op0 = N->getOperand(0);
731 EVT Op0VT = Op0.getValueType();
732 EVT Op0VecVT = EVT::getVectorVT(*CurDAG->getContext(),
733 Op0VT, (128 / Op0VT.getSizeInBits()));
734 EVT OpVecVT = EVT::getVectorVT(*CurDAG->getContext(),
735 OpVT, (128 / OpVT.getSizeInBits()));
738 switch (Op0VT.getSimpleVT().SimpleTy) {
740 llvm_report_error("CellSPU Select: Unhandled zero/any extend EVT");
743 shufMask = CurDAG->getNode(ISD::BUILD_VECTOR, dl, MVT::v4i32,
744 CurDAG->getConstant(0x80808080, MVT::i32),
745 CurDAG->getConstant(0x00010203, MVT::i32),
746 CurDAG->getConstant(0x80808080, MVT::i32),
747 CurDAG->getConstant(0x08090a0b, MVT::i32));
751 shufMask = CurDAG->getNode(ISD::BUILD_VECTOR, dl, MVT::v4i32,
752 CurDAG->getConstant(0x80808080, MVT::i32),
753 CurDAG->getConstant(0x80800203, MVT::i32),
754 CurDAG->getConstant(0x80808080, MVT::i32),
755 CurDAG->getConstant(0x80800a0b, MVT::i32));
759 shufMask = CurDAG->getNode(ISD::BUILD_VECTOR, dl, MVT::v4i32,
760 CurDAG->getConstant(0x80808080, MVT::i32),
761 CurDAG->getConstant(0x80808003, MVT::i32),
762 CurDAG->getConstant(0x80808080, MVT::i32),
763 CurDAG->getConstant(0x8080800b, MVT::i32));
767 SDNode *shufMaskLoad = emitBuildVector(shufMask.getNode());
768 SDNode *PromoteScalar =
769 SelectCode(CurDAG->getNode(SPUISD::PREFSLOT2VEC, dl,
770 Op0VecVT, Op0).getNode());
772 SDValue zextShuffle =
773 CurDAG->getNode(SPUISD::SHUFB, dl, OpVecVT,
774 SDValue(PromoteScalar, 0),
775 SDValue(PromoteScalar, 0),
776 SDValue(shufMaskLoad, 0));
778 // N.B.: BIT_CONVERT replaces and updates the zextShuffle node, so we
779 // re-use it in the VEC2PREFSLOT selection without needing to explicitly
780 // call SelectCode (it's already done for us.)
781 SelectCode(CurDAG->getNode(ISD::BIT_CONVERT, dl, OpVecVT, zextShuffle).getNode());
782 HandleSDNode Dummy(CurDAG->getNode(SPUISD::VEC2PREFSLOT, dl, OpVT,
785 CurDAG->ReplaceAllUsesWith(N, Dummy.getValue().getNode());
786 SelectCode(Dummy.getValue().getNode());
787 return Dummy.getValue().getNode();
788 } else if (Opc == ISD::ADD && (OpVT == MVT::i64 || OpVT == MVT::v2i64)) {
790 emitBuildVector(getCarryGenerateShufMask(*CurDAG, dl).getNode());
792 HandleSDNode Dummy(CurDAG->getNode(SPUISD::ADD64_MARKER, dl, OpVT,
793 N->getOperand(0), N->getOperand(1),
794 SDValue(CGLoad, 0)));
796 CurDAG->ReplaceAllUsesWith(N, Dummy.getValue().getNode());
797 SelectCode(Dummy.getValue().getNode());
798 return Dummy.getValue().getNode();
799 } else if (Opc == ISD::SUB && (OpVT == MVT::i64 || OpVT == MVT::v2i64)) {
801 emitBuildVector(getBorrowGenerateShufMask(*CurDAG, dl).getNode());
803 HandleSDNode Dummy(CurDAG->getNode(SPUISD::SUB64_MARKER, dl, OpVT,
804 N->getOperand(0), N->getOperand(1),
805 SDValue(CGLoad, 0)));
807 CurDAG->ReplaceAllUsesWith(N, Dummy.getValue().getNode());
808 SelectCode(Dummy.getValue().getNode());
809 return Dummy.getValue().getNode();
810 } else if (Opc == ISD::MUL && (OpVT == MVT::i64 || OpVT == MVT::v2i64)) {
812 emitBuildVector(getCarryGenerateShufMask(*CurDAG, dl).getNode());
814 HandleSDNode Dummy(CurDAG->getNode(SPUISD::MUL64_MARKER, dl, OpVT,
815 N->getOperand(0), N->getOperand(1),
816 SDValue(CGLoad, 0)));
817 CurDAG->ReplaceAllUsesWith(N, Dummy.getValue().getNode());
818 SelectCode(Dummy.getValue().getNode());
819 return Dummy.getValue().getNode();
820 } else if (Opc == ISD::TRUNCATE) {
821 SDValue Op0 = N->getOperand(0);
822 if ((Op0.getOpcode() == ISD::SRA || Op0.getOpcode() == ISD::SRL)
824 && Op0.getValueType() == MVT::i64) {
825 // Catch (truncate:i32 ([sra|srl]:i64 arg, c), where c >= 32
827 // Take advantage of the fact that the upper 32 bits are in the
828 // i32 preferred slot and avoid shuffle gymnastics:
829 ConstantSDNode *CN = dyn_cast<ConstantSDNode>(Op0.getOperand(1));
831 unsigned shift_amt = unsigned(CN->getZExtValue());
833 if (shift_amt >= 32) {
835 CurDAG->getMachineNode(SPU::ORr32_r64, dl, OpVT,
840 // Take care of the additional shift, if present:
841 SDValue shift = CurDAG->getTargetConstant(shift_amt, MVT::i32);
842 unsigned Opc = SPU::ROTMAIr32_i32;
844 if (Op0.getOpcode() == ISD::SRL)
847 hi32 = CurDAG->getMachineNode(Opc, dl, OpVT, SDValue(hi32, 0),
855 } else if (Opc == ISD::SHL) {
856 if (OpVT == MVT::i64)
857 return SelectSHLi64(N, OpVT);
858 } else if (Opc == ISD::SRL) {
859 if (OpVT == MVT::i64)
860 return SelectSRLi64(N, OpVT);
861 } else if (Opc == ISD::SRA) {
862 if (OpVT == MVT::i64)
863 return SelectSRAi64(N, OpVT);
864 } else if (Opc == ISD::FNEG
865 && (OpVT == MVT::f64 || OpVT == MVT::v2f64)) {
866 DebugLoc dl = N->getDebugLoc();
867 // Check if the pattern is a special form of DFNMS:
868 // (fneg (fsub (fmul R64FP:$rA, R64FP:$rB), R64FP:$rC))
869 SDValue Op0 = N->getOperand(0);
870 if (Op0.getOpcode() == ISD::FSUB) {
871 SDValue Op00 = Op0.getOperand(0);
872 if (Op00.getOpcode() == ISD::FMUL) {
873 unsigned Opc = SPU::DFNMSf64;
874 if (OpVT == MVT::v2f64)
875 Opc = SPU::DFNMSv2f64;
877 return CurDAG->getMachineNode(Opc, dl, OpVT,
884 SDValue negConst = CurDAG->getConstant(0x8000000000000000ULL, MVT::i64);
885 SDNode *signMask = 0;
886 unsigned Opc = SPU::XORfneg64;
888 if (OpVT == MVT::f64) {
889 signMask = SelectI64Constant(negConst.getNode(), MVT::i64, dl);
890 } else if (OpVT == MVT::v2f64) {
891 Opc = SPU::XORfnegvec;
892 signMask = emitBuildVector(CurDAG->getNode(ISD::BUILD_VECTOR, dl,
894 negConst, negConst).getNode());
897 return CurDAG->getMachineNode(Opc, dl, OpVT,
898 N->getOperand(0), SDValue(signMask, 0));
899 } else if (Opc == ISD::FABS) {
900 if (OpVT == MVT::f64) {
901 SDNode *signMask = SelectI64Constant(0x7fffffffffffffffULL, MVT::i64, dl);
902 return CurDAG->getMachineNode(SPU::ANDfabs64, dl, OpVT,
903 N->getOperand(0), SDValue(signMask, 0));
904 } else if (OpVT == MVT::v2f64) {
905 SDValue absConst = CurDAG->getConstant(0x7fffffffffffffffULL, MVT::i64);
906 SDValue absVec = CurDAG->getNode(ISD::BUILD_VECTOR, dl, MVT::v2i64,
908 SDNode *signMask = emitBuildVector(absVec.getNode());
909 return CurDAG->getMachineNode(SPU::ANDfabsvec, dl, OpVT,
910 N->getOperand(0), SDValue(signMask, 0));
912 } else if (Opc == SPUISD::LDRESULT) {
913 // Custom select instructions for LDRESULT
914 EVT VT = N->getValueType(0);
915 SDValue Arg = N->getOperand(0);
916 SDValue Chain = N->getOperand(1);
918 const valtype_map_s *vtm = getValueTypeMapEntry(VT);
920 if (vtm->ldresult_ins == 0) {
922 raw_string_ostream Msg(msg);
923 Msg << "LDRESULT for unsupported type: "
924 << VT.getEVTString();
925 llvm_report_error(Msg.str());
928 Opc = vtm->ldresult_ins;
929 if (vtm->ldresult_imm) {
930 SDValue Zero = CurDAG->getTargetConstant(0, VT);
932 Result = CurDAG->getMachineNode(Opc, dl, VT, MVT::Other, Arg, Zero, Chain);
934 Result = CurDAG->getMachineNode(Opc, dl, VT, MVT::Other, Arg, Arg, Chain);
938 } else if (Opc == SPUISD::IndirectAddr) {
939 // Look at the operands: SelectCode() will catch the cases that aren't
940 // specifically handled here.
942 // SPUInstrInfo catches the following patterns:
943 // (SPUindirect (SPUhi ...), (SPUlo ...))
944 // (SPUindirect $sp, imm)
945 EVT VT = N->getValueType(0);
946 SDValue Op0 = N->getOperand(0);
947 SDValue Op1 = N->getOperand(1);
950 if ((Op0.getOpcode() != SPUISD::Hi && Op1.getOpcode() != SPUISD::Lo)
951 || (Op0.getOpcode() == ISD::Register
952 && ((RN = dyn_cast<RegisterSDNode>(Op0.getNode())) != 0
953 && RN->getReg() != SPU::R1))) {
955 if (Op1.getOpcode() == ISD::Constant) {
956 ConstantSDNode *CN = cast<ConstantSDNode>(Op1);
957 Op1 = CurDAG->getTargetConstant(CN->getSExtValue(), VT);
958 NewOpc = (isI32IntS10Immediate(CN) ? SPU::AIr32 : SPU::Ar32);
968 return CurDAG->SelectNodeTo(N, NewOpc, OpVT, Ops, n_ops);
970 return CurDAG->getMachineNode(NewOpc, dl, OpVT, Ops, n_ops);
972 return SelectCode(N);
976 * Emit the instruction sequence for i64 left shifts. The basic algorithm
977 * is to fill the bottom two word slots with zeros so that zeros are shifted
978 * in as the entire quadword is shifted left.
980 * \note This code could also be used to implement v2i64 shl.
982 * @param Op The shl operand
983 * @param OpVT Op's machine value value type (doesn't need to be passed, but
984 * makes life easier.)
985 * @return The SDNode with the entire instruction sequence
988 SPUDAGToDAGISel::SelectSHLi64(SDNode *N, EVT OpVT) {
989 SDValue Op0 = N->getOperand(0);
990 EVT VecVT = EVT::getVectorVT(*CurDAG->getContext(),
991 OpVT, (128 / OpVT.getSizeInBits()));
992 SDValue ShiftAmt = N->getOperand(1);
993 EVT ShiftAmtVT = ShiftAmt.getValueType();
994 SDNode *VecOp0, *SelMask, *ZeroFill, *Shift = 0;
996 DebugLoc dl = N->getDebugLoc();
998 VecOp0 = CurDAG->getMachineNode(SPU::ORv2i64_i64, dl, VecVT, Op0);
999 SelMaskVal = CurDAG->getTargetConstant(0xff00ULL, MVT::i16);
1000 SelMask = CurDAG->getMachineNode(SPU::FSMBIv2i64, dl, VecVT, SelMaskVal);
1001 ZeroFill = CurDAG->getMachineNode(SPU::ILv2i64, dl, VecVT,
1002 CurDAG->getTargetConstant(0, OpVT));
1003 VecOp0 = CurDAG->getMachineNode(SPU::SELBv2i64, dl, VecVT,
1004 SDValue(ZeroFill, 0),
1006 SDValue(SelMask, 0));
1008 if (ConstantSDNode *CN = dyn_cast<ConstantSDNode>(ShiftAmt)) {
1009 unsigned bytes = unsigned(CN->getZExtValue()) >> 3;
1010 unsigned bits = unsigned(CN->getZExtValue()) & 7;
1014 CurDAG->getMachineNode(SPU::SHLQBYIv2i64, dl, VecVT,
1016 CurDAG->getTargetConstant(bytes, ShiftAmtVT));
1021 CurDAG->getMachineNode(SPU::SHLQBIIv2i64, dl, VecVT,
1022 SDValue((Shift != 0 ? Shift : VecOp0), 0),
1023 CurDAG->getTargetConstant(bits, ShiftAmtVT));
1027 CurDAG->getMachineNode(SPU::ROTMIr32, dl, ShiftAmtVT,
1029 CurDAG->getTargetConstant(3, ShiftAmtVT));
1031 CurDAG->getMachineNode(SPU::ANDIr32, dl, ShiftAmtVT,
1033 CurDAG->getTargetConstant(7, ShiftAmtVT));
1035 CurDAG->getMachineNode(SPU::SHLQBYv2i64, dl, VecVT,
1036 SDValue(VecOp0, 0), SDValue(Bytes, 0));
1038 CurDAG->getMachineNode(SPU::SHLQBIv2i64, dl, VecVT,
1039 SDValue(Shift, 0), SDValue(Bits, 0));
1042 return CurDAG->getMachineNode(SPU::ORi64_v2i64, dl, OpVT, SDValue(Shift, 0));
1046 * Emit the instruction sequence for i64 logical right shifts.
1048 * @param Op The shl operand
1049 * @param OpVT Op's machine value value type (doesn't need to be passed, but
1050 * makes life easier.)
1051 * @return The SDNode with the entire instruction sequence
1054 SPUDAGToDAGISel::SelectSRLi64(SDNode *N, EVT OpVT) {
1055 SDValue Op0 = N->getOperand(0);
1056 EVT VecVT = EVT::getVectorVT(*CurDAG->getContext(),
1057 OpVT, (128 / OpVT.getSizeInBits()));
1058 SDValue ShiftAmt = N->getOperand(1);
1059 EVT ShiftAmtVT = ShiftAmt.getValueType();
1060 SDNode *VecOp0, *Shift = 0;
1061 DebugLoc dl = N->getDebugLoc();
1063 VecOp0 = CurDAG->getMachineNode(SPU::ORv2i64_i64, dl, VecVT, Op0);
1065 if (ConstantSDNode *CN = dyn_cast<ConstantSDNode>(ShiftAmt)) {
1066 unsigned bytes = unsigned(CN->getZExtValue()) >> 3;
1067 unsigned bits = unsigned(CN->getZExtValue()) & 7;
1071 CurDAG->getMachineNode(SPU::ROTQMBYIv2i64, dl, VecVT,
1073 CurDAG->getTargetConstant(bytes, ShiftAmtVT));
1078 CurDAG->getMachineNode(SPU::ROTQMBIIv2i64, dl, VecVT,
1079 SDValue((Shift != 0 ? Shift : VecOp0), 0),
1080 CurDAG->getTargetConstant(bits, ShiftAmtVT));
1084 CurDAG->getMachineNode(SPU::ROTMIr32, dl, ShiftAmtVT,
1086 CurDAG->getTargetConstant(3, ShiftAmtVT));
1088 CurDAG->getMachineNode(SPU::ANDIr32, dl, ShiftAmtVT,
1090 CurDAG->getTargetConstant(7, ShiftAmtVT));
1092 // Ensure that the shift amounts are negated!
1093 Bytes = CurDAG->getMachineNode(SPU::SFIr32, dl, ShiftAmtVT,
1095 CurDAG->getTargetConstant(0, ShiftAmtVT));
1097 Bits = CurDAG->getMachineNode(SPU::SFIr32, dl, ShiftAmtVT,
1099 CurDAG->getTargetConstant(0, ShiftAmtVT));
1102 CurDAG->getMachineNode(SPU::ROTQMBYv2i64, dl, VecVT,
1103 SDValue(VecOp0, 0), SDValue(Bytes, 0));
1105 CurDAG->getMachineNode(SPU::ROTQMBIv2i64, dl, VecVT,
1106 SDValue(Shift, 0), SDValue(Bits, 0));
1109 return CurDAG->getMachineNode(SPU::ORi64_v2i64, dl, OpVT, SDValue(Shift, 0));
1113 * Emit the instruction sequence for i64 arithmetic right shifts.
1115 * @param Op The shl operand
1116 * @param OpVT Op's machine value value type (doesn't need to be passed, but
1117 * makes life easier.)
1118 * @return The SDNode with the entire instruction sequence
1121 SPUDAGToDAGISel::SelectSRAi64(SDNode *N, EVT OpVT) {
1122 // Promote Op0 to vector
1123 EVT VecVT = EVT::getVectorVT(*CurDAG->getContext(),
1124 OpVT, (128 / OpVT.getSizeInBits()));
1125 SDValue ShiftAmt = N->getOperand(1);
1126 EVT ShiftAmtVT = ShiftAmt.getValueType();
1127 DebugLoc dl = N->getDebugLoc();
1130 CurDAG->getMachineNode(SPU::ORv2i64_i64, dl, VecVT, N->getOperand(0));
1132 SDValue SignRotAmt = CurDAG->getTargetConstant(31, ShiftAmtVT);
1134 CurDAG->getMachineNode(SPU::ROTMAIv2i64_i32, dl, MVT::v2i64,
1135 SDValue(VecOp0, 0), SignRotAmt);
1136 SDNode *UpperHalfSign =
1137 CurDAG->getMachineNode(SPU::ORi32_v4i32, dl, MVT::i32, SDValue(SignRot, 0));
1139 SDNode *UpperHalfSignMask =
1140 CurDAG->getMachineNode(SPU::FSM64r32, dl, VecVT, SDValue(UpperHalfSign, 0));
1141 SDNode *UpperLowerMask =
1142 CurDAG->getMachineNode(SPU::FSMBIv2i64, dl, VecVT,
1143 CurDAG->getTargetConstant(0xff00ULL, MVT::i16));
1144 SDNode *UpperLowerSelect =
1145 CurDAG->getMachineNode(SPU::SELBv2i64, dl, VecVT,
1146 SDValue(UpperHalfSignMask, 0),
1148 SDValue(UpperLowerMask, 0));
1152 if (ConstantSDNode *CN = dyn_cast<ConstantSDNode>(ShiftAmt)) {
1153 unsigned bytes = unsigned(CN->getZExtValue()) >> 3;
1154 unsigned bits = unsigned(CN->getZExtValue()) & 7;
1159 CurDAG->getMachineNode(SPU::ROTQBYIv2i64, dl, VecVT,
1160 SDValue(UpperLowerSelect, 0),
1161 CurDAG->getTargetConstant(bytes, ShiftAmtVT));
1167 CurDAG->getMachineNode(SPU::ROTQBIIv2i64, dl, VecVT,
1168 SDValue((Shift != 0 ? Shift : UpperLowerSelect), 0),
1169 CurDAG->getTargetConstant(bits, ShiftAmtVT));
1173 CurDAG->getMachineNode(SPU::SFIr32, dl, ShiftAmtVT,
1174 ShiftAmt, CurDAG->getTargetConstant(0, ShiftAmtVT));
1177 CurDAG->getMachineNode(SPU::ROTQBYBIv2i64_r32, dl, VecVT,
1178 SDValue(UpperLowerSelect, 0), SDValue(NegShift, 0));
1180 CurDAG->getMachineNode(SPU::ROTQBIv2i64, dl, VecVT,
1181 SDValue(Shift, 0), SDValue(NegShift, 0));
1184 return CurDAG->getMachineNode(SPU::ORi64_v2i64, dl, OpVT, SDValue(Shift, 0));
1188 Do the necessary magic necessary to load a i64 constant
1190 SDNode *SPUDAGToDAGISel::SelectI64Constant(SDNode *N, EVT OpVT,
1192 ConstantSDNode *CN = cast<ConstantSDNode>(N);
1193 return SelectI64Constant(CN->getZExtValue(), OpVT, dl);
1196 SDNode *SPUDAGToDAGISel::SelectI64Constant(uint64_t Value64, EVT OpVT,
1198 EVT OpVecVT = EVT::getVectorVT(*CurDAG->getContext(), OpVT, 2);
1200 SPU::LowerV2I64Splat(OpVecVT, *CurDAG, Value64, dl);
1202 // Here's where it gets interesting, because we have to parse out the
1203 // subtree handed back in i64vec:
1205 if (i64vec.getOpcode() == ISD::BIT_CONVERT) {
1206 // The degenerate case where the upper and lower bits in the splat are
1208 SDValue Op0 = i64vec.getOperand(0);
1210 ReplaceUses(i64vec, Op0);
1211 return CurDAG->getMachineNode(SPU::ORi64_v2i64, dl, OpVT,
1212 SDValue(emitBuildVector(Op0.getNode()), 0));
1213 } else if (i64vec.getOpcode() == SPUISD::SHUFB) {
1214 SDValue lhs = i64vec.getOperand(0);
1215 SDValue rhs = i64vec.getOperand(1);
1216 SDValue shufmask = i64vec.getOperand(2);
1218 if (lhs.getOpcode() == ISD::BIT_CONVERT) {
1219 ReplaceUses(lhs, lhs.getOperand(0));
1220 lhs = lhs.getOperand(0);
1223 SDNode *lhsNode = (lhs.getNode()->isMachineOpcode()
1225 : emitBuildVector(lhs.getNode()));
1227 if (rhs.getOpcode() == ISD::BIT_CONVERT) {
1228 ReplaceUses(rhs, rhs.getOperand(0));
1229 rhs = rhs.getOperand(0);
1232 SDNode *rhsNode = (rhs.getNode()->isMachineOpcode()
1234 : emitBuildVector(rhs.getNode()));
1236 if (shufmask.getOpcode() == ISD::BIT_CONVERT) {
1237 ReplaceUses(shufmask, shufmask.getOperand(0));
1238 shufmask = shufmask.getOperand(0);
1241 SDNode *shufMaskNode = (shufmask.getNode()->isMachineOpcode()
1242 ? shufmask.getNode()
1243 : emitBuildVector(shufmask.getNode()));
1246 Select(CurDAG->getNode(SPUISD::SHUFB, dl, OpVecVT,
1247 SDValue(lhsNode, 0), SDValue(rhsNode, 0),
1248 SDValue(shufMaskNode, 0)).getNode());
1250 return CurDAG->getMachineNode(SPU::ORi64_v2i64, dl, OpVT,
1251 SDValue(shufNode, 0));
1252 } else if (i64vec.getOpcode() == ISD::BUILD_VECTOR) {
1253 return CurDAG->getMachineNode(SPU::ORi64_v2i64, dl, OpVT,
1254 SDValue(emitBuildVector(i64vec.getNode()), 0));
1256 llvm_report_error("SPUDAGToDAGISel::SelectI64Constant: Unhandled i64vec"
1261 /// createSPUISelDag - This pass converts a legalized DAG into a
1262 /// SPU-specific DAG, ready for instruction scheduling.
1264 FunctionPass *llvm::createSPUISelDag(SPUTargetMachine &TM) {
1265 return new SPUDAGToDAGISel(TM);