1 //===- SystemZInstrInfo.cpp - SystemZ Instruction Information --------------===//
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 contains the SystemZ implementation of the TargetInstrInfo class.
12 //===----------------------------------------------------------------------===//
15 #include "SystemZInstrBuilder.h"
16 #include "SystemZInstrInfo.h"
17 #include "SystemZMachineFunctionInfo.h"
18 #include "SystemZTargetMachine.h"
19 #include "SystemZGenInstrInfo.inc"
20 #include "llvm/Function.h"
21 #include "llvm/CodeGen/MachineFrameInfo.h"
22 #include "llvm/CodeGen/MachineInstrBuilder.h"
23 #include "llvm/CodeGen/MachineRegisterInfo.h"
24 #include "llvm/CodeGen/PseudoSourceValue.h"
28 SystemZInstrInfo::SystemZInstrInfo(SystemZTargetMachine &tm)
29 : TargetInstrInfoImpl(SystemZInsts, array_lengthof(SystemZInsts)),
30 RI(tm, *this), TM(tm) {
31 // Fill the spill offsets map
32 static const unsigned SpillOffsTab[][2] = {
33 { SystemZ::R2D, 0x10 },
34 { SystemZ::R3D, 0x18 },
35 { SystemZ::R4D, 0x20 },
36 { SystemZ::R5D, 0x28 },
37 { SystemZ::R6D, 0x30 },
38 { SystemZ::R7D, 0x38 },
39 { SystemZ::R8D, 0x40 },
40 { SystemZ::R9D, 0x48 },
41 { SystemZ::R10D, 0x50 },
42 { SystemZ::R11D, 0x58 },
43 { SystemZ::R12D, 0x60 },
44 { SystemZ::R13D, 0x68 },
45 { SystemZ::R14D, 0x70 },
46 { SystemZ::R15D, 0x78 }
49 RegSpillOffsets.grow(SystemZ::NUM_TARGET_REGS);
51 for (unsigned i = 0, e = array_lengthof(SpillOffsTab); i != e; ++i)
52 RegSpillOffsets[SpillOffsTab[i][0]] = SpillOffsTab[i][1];
55 void SystemZInstrInfo::storeRegToStackSlot(MachineBasicBlock &MBB,
56 MachineBasicBlock::iterator MI,
57 unsigned SrcReg, bool isKill, int FrameIdx,
58 const TargetRegisterClass *RC) const {
59 DebugLoc DL = DebugLoc::getUnknownLoc();
60 if (MI != MBB.end()) DL = MI->getDebugLoc();
63 if (RC == &SystemZ::GR32RegClass ||
64 RC == &SystemZ::ADDR32RegClass)
65 Opc = SystemZ::MOV32mr;
66 else if (RC == &SystemZ::GR64RegClass ||
67 RC == &SystemZ::ADDR64RegClass) {
68 Opc = SystemZ::MOV64mr;
69 } else if (RC == &SystemZ::FP32RegClass) {
70 Opc = SystemZ::FMOV32mr;
71 } else if (RC == &SystemZ::FP64RegClass) {
72 Opc = SystemZ::FMOV64mr;
74 assert(0 && "Unsupported regclass to store");
76 addFrameReference(BuildMI(MBB, MI, DL, get(Opc)), FrameIdx)
77 .addReg(SrcReg, getKillRegState(isKill));
80 void SystemZInstrInfo::loadRegFromStackSlot(MachineBasicBlock &MBB,
81 MachineBasicBlock::iterator MI,
82 unsigned DestReg, int FrameIdx,
83 const TargetRegisterClass *RC) const{
84 DebugLoc DL = DebugLoc::getUnknownLoc();
85 if (MI != MBB.end()) DL = MI->getDebugLoc();
88 if (RC == &SystemZ::GR32RegClass ||
89 RC == &SystemZ::ADDR32RegClass)
90 Opc = SystemZ::MOV32rm;
91 else if (RC == &SystemZ::GR64RegClass ||
92 RC == &SystemZ::ADDR64RegClass) {
93 Opc = SystemZ::MOV64rm;
94 } else if (RC == &SystemZ::FP32RegClass) {
95 Opc = SystemZ::FMOV32rm;
96 } else if (RC == &SystemZ::FP64RegClass) {
97 Opc = SystemZ::FMOV64rm;
99 assert(0 && "Unsupported regclass to store");
101 addFrameReference(BuildMI(MBB, MI, DL, get(Opc), DestReg), FrameIdx);
104 bool SystemZInstrInfo::copyRegToReg(MachineBasicBlock &MBB,
105 MachineBasicBlock::iterator I,
106 unsigned DestReg, unsigned SrcReg,
107 const TargetRegisterClass *DestRC,
108 const TargetRegisterClass *SrcRC) const {
109 DebugLoc DL = DebugLoc::getUnknownLoc();
110 if (I != MBB.end()) DL = I->getDebugLoc();
112 // Determine if DstRC and SrcRC have a common superclass.
113 const TargetRegisterClass *CommonRC = DestRC;
115 /* Same regclass for source and dest */;
116 else if (CommonRC->hasSuperClass(SrcRC))
118 else if (!CommonRC->hasSubClass(SrcRC))
122 if (CommonRC == &SystemZ::GR64RegClass ||
123 CommonRC == &SystemZ::ADDR64RegClass) {
124 BuildMI(MBB, I, DL, get(SystemZ::MOV64rr), DestReg).addReg(SrcReg);
125 } else if (CommonRC == &SystemZ::GR32RegClass ||
126 CommonRC == &SystemZ::ADDR32RegClass) {
127 BuildMI(MBB, I, DL, get(SystemZ::MOV32rr), DestReg).addReg(SrcReg);
128 } else if (CommonRC == &SystemZ::GR64PRegClass) {
129 BuildMI(MBB, I, DL, get(SystemZ::MOV64rrP), DestReg).addReg(SrcReg);
130 } else if (CommonRC == &SystemZ::GR128RegClass) {
131 BuildMI(MBB, I, DL, get(SystemZ::MOV128rr), DestReg).addReg(SrcReg);
132 } else if (CommonRC == &SystemZ::FP32RegClass) {
133 BuildMI(MBB, I, DL, get(SystemZ::FMOV32rr), DestReg).addReg(SrcReg);
134 } else if (CommonRC == &SystemZ::FP64RegClass) {
135 BuildMI(MBB, I, DL, get(SystemZ::FMOV64rr), DestReg).addReg(SrcReg);
143 if ((SrcRC == &SystemZ::GR64RegClass &&
144 DestRC == &SystemZ::ADDR64RegClass) ||
145 (DestRC == &SystemZ::GR64RegClass &&
146 SrcRC == &SystemZ::ADDR64RegClass)) {
147 BuildMI(MBB, I, DL, get(SystemZ::MOV64rr), DestReg).addReg(SrcReg);
149 } else if ((SrcRC == &SystemZ::GR32RegClass &&
150 DestRC == &SystemZ::ADDR32RegClass) ||
151 (DestRC == &SystemZ::GR32RegClass &&
152 SrcRC == &SystemZ::ADDR32RegClass)) {
153 BuildMI(MBB, I, DL, get(SystemZ::MOV32rr), DestReg).addReg(SrcReg);
161 SystemZInstrInfo::isMoveInstr(const MachineInstr& MI,
162 unsigned &SrcReg, unsigned &DstReg,
163 unsigned &SrcSubIdx, unsigned &DstSubIdx) const {
164 switch (MI.getOpcode()) {
167 case SystemZ::MOV32rr:
168 case SystemZ::MOV64rr:
169 case SystemZ::MOV64rrP:
170 case SystemZ::MOV128rr:
171 case SystemZ::FMOV32rr:
172 case SystemZ::FMOV64rr:
173 assert(MI.getNumOperands() >= 2 &&
174 MI.getOperand(0).isReg() &&
175 MI.getOperand(1).isReg() &&
176 "invalid register-register move instruction");
177 SrcReg = MI.getOperand(1).getReg();
178 DstReg = MI.getOperand(0).getReg();
179 SrcSubIdx = MI.getOperand(1).getSubReg();
180 DstSubIdx = MI.getOperand(0).getSubReg();
185 unsigned SystemZInstrInfo::isLoadFromStackSlot(const MachineInstr *MI,
186 int &FrameIndex) const {
187 switch (MI->getOpcode()) {
189 case SystemZ::MOV32rm:
190 case SystemZ::MOV32rmy:
191 case SystemZ::MOV64rm:
192 case SystemZ::MOVSX32rm8:
193 case SystemZ::MOVSX32rm16y:
194 case SystemZ::MOVSX64rm8:
195 case SystemZ::MOVSX64rm16:
196 case SystemZ::MOVSX64rm32:
197 case SystemZ::MOVZX32rm8:
198 case SystemZ::MOVZX32rm16:
199 case SystemZ::MOVZX64rm8:
200 case SystemZ::MOVZX64rm16:
201 case SystemZ::MOVZX64rm32:
202 case SystemZ::FMOV32rm:
203 case SystemZ::FMOV32rmy:
204 case SystemZ::FMOV64rm:
205 case SystemZ::FMOV64rmy:
206 if (MI->getOperand(1).isFI() &&
207 MI->getOperand(2).isImm() && MI->getOperand(3).isReg() &&
208 MI->getOperand(2).getImm() == 0 && MI->getOperand(3).getReg() == 0) {
209 FrameIndex = MI->getOperand(1).getIndex();
210 return MI->getOperand(0).getReg();
217 unsigned SystemZInstrInfo::isStoreToStackSlot(const MachineInstr *MI,
218 int &FrameIndex) const {
219 switch (MI->getOpcode()) {
221 case SystemZ::MOV32mr:
222 case SystemZ::MOV32mry:
223 case SystemZ::MOV64mr:
224 case SystemZ::MOV32m8r:
225 case SystemZ::MOV32m8ry:
226 case SystemZ::MOV32m16r:
227 case SystemZ::MOV32m16ry:
228 case SystemZ::MOV64m8r:
229 case SystemZ::MOV64m8ry:
230 case SystemZ::MOV64m16r:
231 case SystemZ::MOV64m16ry:
232 case SystemZ::MOV64m32r:
233 case SystemZ::MOV64m32ry:
234 case SystemZ::FMOV32mr:
235 case SystemZ::FMOV32mry:
236 case SystemZ::FMOV64mr:
237 case SystemZ::FMOV64mry:
238 if (MI->getOperand(0).isFI() &&
239 MI->getOperand(1).isImm() && MI->getOperand(2).isReg() &&
240 MI->getOperand(1).getImm() == 0 && MI->getOperand(2).getReg() == 0) {
241 FrameIndex = MI->getOperand(0).getIndex();
242 return MI->getOperand(3).getReg();
250 SystemZInstrInfo::spillCalleeSavedRegisters(MachineBasicBlock &MBB,
251 MachineBasicBlock::iterator MI,
252 const std::vector<CalleeSavedInfo> &CSI) const {
256 DebugLoc DL = DebugLoc::getUnknownLoc();
257 if (MI != MBB.end()) DL = MI->getDebugLoc();
259 MachineFunction &MF = *MBB.getParent();
260 SystemZMachineFunctionInfo *MFI = MF.getInfo<SystemZMachineFunctionInfo>();
261 unsigned CalleeFrameSize = 0;
263 // Scan the callee-saved and find the bounds of register spill area.
264 unsigned LowReg = 0, HighReg = 0, StartOffset = -1U, EndOffset = 0;
265 for (unsigned i = 0, e = CSI.size(); i != e; ++i) {
266 unsigned Reg = CSI[i].getReg();
267 const TargetRegisterClass *RegClass = CSI[i].getRegClass();
268 if (RegClass != &SystemZ::FP64RegClass) {
269 unsigned Offset = RegSpillOffsets[Reg];
270 CalleeFrameSize += 8;
271 if (StartOffset > Offset) {
272 LowReg = Reg; StartOffset = Offset;
274 if (EndOffset < Offset) {
275 HighReg = Reg; EndOffset = RegSpillOffsets[Reg];
280 // Save information for epilogue inserter.
281 MFI->setCalleeSavedFrameSize(CalleeFrameSize);
282 MFI->setLowReg(LowReg); MFI->setHighReg(HighReg);
286 // Build a store instruction. Use STORE MULTIPLE instruction if there are many
287 // registers to store, otherwise - just STORE.
288 MachineInstrBuilder MIB =
289 BuildMI(MBB, MI, DL, get((LowReg == HighReg ?
290 SystemZ::MOV64mr : SystemZ::MOV64mrm)));
292 // Add store operands.
293 MIB.addReg(SystemZ::R15D).addImm(StartOffset);
294 if (LowReg == HighReg)
296 MIB.addReg(LowReg, RegState::Kill);
297 if (LowReg != HighReg)
298 MIB.addReg(HighReg, RegState::Kill);
300 // Do a second scan adding regs as being killed by instruction
301 for (unsigned i = 0, e = CSI.size(); i != e; ++i) {
302 unsigned Reg = CSI[i].getReg();
303 // Add the callee-saved register as live-in. It's killed at the spill.
305 if (Reg != LowReg && Reg != HighReg)
306 MIB.addReg(Reg, RegState::ImplicitKill);
311 for (unsigned i = 0, e = CSI.size(); i != e; ++i) {
312 unsigned Reg = CSI[i].getReg();
313 const TargetRegisterClass *RegClass = CSI[i].getRegClass();
314 if (RegClass == &SystemZ::FP64RegClass) {
316 storeRegToStackSlot(MBB, MI, Reg, true, CSI[i].getFrameIdx(), RegClass);
324 SystemZInstrInfo::restoreCalleeSavedRegisters(MachineBasicBlock &MBB,
325 MachineBasicBlock::iterator MI,
326 const std::vector<CalleeSavedInfo> &CSI) const {
330 DebugLoc DL = DebugLoc::getUnknownLoc();
331 if (MI != MBB.end()) DL = MI->getDebugLoc();
333 MachineFunction &MF = *MBB.getParent();
334 const TargetRegisterInfo *RegInfo= MF.getTarget().getRegisterInfo();
335 SystemZMachineFunctionInfo *MFI = MF.getInfo<SystemZMachineFunctionInfo>();
337 // Restore FP registers
338 for (unsigned i = 0, e = CSI.size(); i != e; ++i) {
339 unsigned Reg = CSI[i].getReg();
340 const TargetRegisterClass *RegClass = CSI[i].getRegClass();
341 if (RegClass == &SystemZ::FP64RegClass)
342 loadRegFromStackSlot(MBB, MI, Reg, CSI[i].getFrameIdx(), RegClass);
345 // Restore GP registers
346 unsigned LowReg = MFI->getLowReg(), HighReg = MFI->getHighReg();
347 unsigned StartOffset = RegSpillOffsets[LowReg];
350 // Build a load instruction. Use LOAD MULTIPLE instruction if there are many
351 // registers to load, otherwise - just LOAD.
352 MachineInstrBuilder MIB =
353 BuildMI(MBB, MI, DL, get((LowReg == HighReg ?
354 SystemZ::MOV64rm : SystemZ::MOV64rmm)));
355 // Add store operands.
356 MIB.addReg(LowReg, RegState::Define);
357 if (LowReg != HighReg)
358 MIB.addReg(HighReg, RegState::Define);
360 MIB.addReg((RegInfo->hasFP(MF) ? SystemZ::R11D : SystemZ::R15D));
361 MIB.addImm(StartOffset);
362 if (LowReg == HighReg)
365 // Do a second scan adding regs as being defined by instruction
366 for (unsigned i = 0, e = CSI.size(); i != e; ++i) {
367 unsigned Reg = CSI[i].getReg();
368 if (Reg != LowReg && Reg != HighReg)
369 MIB.addReg(Reg, RegState::ImplicitDefine);
376 bool SystemZInstrInfo::
377 ReverseBranchCondition(SmallVectorImpl<MachineOperand> &Cond) const {
378 assert(Cond.size() == 1 && "Invalid Xbranch condition!");
380 SystemZCC::CondCodes CC = static_cast<SystemZCC::CondCodes>(Cond[0].getImm());
381 Cond[0].setImm(getOppositeCondition(CC));
385 bool SystemZInstrInfo::BlockHasNoFallThrough(const MachineBasicBlock &MBB)const{
386 if (MBB.empty()) return false;
388 switch (MBB.back().getOpcode()) {
389 case SystemZ::RET: // Return.
390 case SystemZ::JMP: // Uncond branch.
391 case SystemZ::JMPr: // Indirect branch.
393 default: return false;
397 bool SystemZInstrInfo::isUnpredicatedTerminator(const MachineInstr *MI) const {
398 const TargetInstrDesc &TID = MI->getDesc();
399 if (!TID.isTerminator()) return false;
401 // Conditional branch is a special case.
402 if (TID.isBranch() && !TID.isBarrier())
404 if (!TID.isPredicable())
406 return !isPredicated(MI);
409 bool SystemZInstrInfo::AnalyzeBranch(MachineBasicBlock &MBB,
410 MachineBasicBlock *&TBB,
411 MachineBasicBlock *&FBB,
412 SmallVectorImpl<MachineOperand> &Cond,
413 bool AllowModify) const {
414 // Start from the bottom of the block and work up, examining the
415 // terminator instructions.
416 MachineBasicBlock::iterator I = MBB.end();
417 while (I != MBB.begin()) {
419 // Working from the bottom, when we see a non-terminator
420 // instruction, we're done.
421 if (!isUnpredicatedTerminator(I))
424 // A terminator that isn't a branch can't easily be handled
426 if (!I->getDesc().isBranch())
429 // Handle unconditional branches.
430 if (I->getOpcode() == SystemZ::JMP) {
432 TBB = I->getOperand(0).getMBB();
436 // If the block has any instructions after a JMP, delete them.
437 while (next(I) != MBB.end())
438 next(I)->eraseFromParent();
442 // Delete the JMP if it's equivalent to a fall-through.
443 if (MBB.isLayoutSuccessor(I->getOperand(0).getMBB())) {
445 I->eraseFromParent();
450 // TBB is used to indicate the unconditinal destination.
451 TBB = I->getOperand(0).getMBB();
455 // Handle conditional branches.
456 SystemZCC::CondCodes BranchCode = getCondFromBranchOpc(I->getOpcode());
457 if (BranchCode == SystemZCC::INVALID)
458 return true; // Can't handle indirect branch.
460 // Working from the bottom, handle the first conditional branch.
463 TBB = I->getOperand(0).getMBB();
464 Cond.push_back(MachineOperand::CreateImm(BranchCode));
468 // Handle subsequent conditional branches. Only handle the case where all
469 // conditional branches branch to the same destination.
470 assert(Cond.size() == 1);
473 // Only handle the case where all conditional branches branch to
474 // the same destination.
475 if (TBB != I->getOperand(0).getMBB())
478 SystemZCC::CondCodes OldBranchCode = (SystemZCC::CondCodes)Cond[0].getImm();
479 // If the conditions are the same, we can leave them alone.
480 if (OldBranchCode == BranchCode)
489 unsigned SystemZInstrInfo::RemoveBranch(MachineBasicBlock &MBB) const {
490 MachineBasicBlock::iterator I = MBB.end();
493 while (I != MBB.begin()) {
495 if (I->getOpcode() != SystemZ::JMP &&
496 getCondFromBranchOpc(I->getOpcode()) == SystemZCC::INVALID)
498 // Remove the branch.
499 I->eraseFromParent();
508 SystemZInstrInfo::InsertBranch(MachineBasicBlock &MBB, MachineBasicBlock *TBB,
509 MachineBasicBlock *FBB,
510 const SmallVectorImpl<MachineOperand> &Cond) const {
511 // FIXME: this should probably have a DebugLoc operand
512 DebugLoc dl = DebugLoc::getUnknownLoc();
513 // Shouldn't be a fall through.
514 assert(TBB && "InsertBranch must not be told to insert a fallthrough");
515 assert((Cond.size() == 1 || Cond.size() == 0) &&
516 "SystemZ branch conditions have one component!");
519 // Unconditional branch?
520 assert(!FBB && "Unconditional branch with multiple successors!");
521 BuildMI(&MBB, dl, get(SystemZ::JMP)).addMBB(TBB);
525 // Conditional branch.
527 SystemZCC::CondCodes CC = (SystemZCC::CondCodes)Cond[0].getImm();
528 BuildMI(&MBB, dl, getBrCond(CC)).addMBB(TBB);
532 // Two-way Conditional branch. Insert the second branch.
533 BuildMI(&MBB, dl, get(SystemZ::JMP)).addMBB(FBB);
539 const TargetInstrDesc&
540 SystemZInstrInfo::getBrCond(SystemZCC::CondCodes CC) const {
543 assert(0 && "Unknown condition code!");
544 case SystemZCC::O: return get(SystemZ::JO);
545 case SystemZCC::H: return get(SystemZ::JH);
546 case SystemZCC::NLE: return get(SystemZ::JNLE);
547 case SystemZCC::L: return get(SystemZ::JL);
548 case SystemZCC::NHE: return get(SystemZ::JNHE);
549 case SystemZCC::LH: return get(SystemZ::JLH);
550 case SystemZCC::NE: return get(SystemZ::JNE);
551 case SystemZCC::E: return get(SystemZ::JE);
552 case SystemZCC::NLH: return get(SystemZ::JNLH);
553 case SystemZCC::HE: return get(SystemZ::JHE);
554 case SystemZCC::NL: return get(SystemZ::JNL);
555 case SystemZCC::LE: return get(SystemZ::JLE);
556 case SystemZCC::NH: return get(SystemZ::JNH);
557 case SystemZCC::NO: return get(SystemZ::JNO);
562 SystemZInstrInfo::getCondFromBranchOpc(unsigned Opc) const {
564 default: return SystemZCC::INVALID;
565 case SystemZ::JO: return SystemZCC::O;
566 case SystemZ::JH: return SystemZCC::H;
567 case SystemZ::JNLE: return SystemZCC::NLE;
568 case SystemZ::JL: return SystemZCC::L;
569 case SystemZ::JNHE: return SystemZCC::NHE;
570 case SystemZ::JLH: return SystemZCC::LH;
571 case SystemZ::JNE: return SystemZCC::NE;
572 case SystemZ::JE: return SystemZCC::E;
573 case SystemZ::JNLH: return SystemZCC::NLH;
574 case SystemZ::JHE: return SystemZCC::HE;
575 case SystemZ::JNL: return SystemZCC::NL;
576 case SystemZ::JLE: return SystemZCC::LE;
577 case SystemZ::JNH: return SystemZCC::NH;
578 case SystemZ::JNO: return SystemZCC::NO;
583 SystemZInstrInfo::getOppositeCondition(SystemZCC::CondCodes CC) const {
586 assert(0 && "Invalid condition!");
587 case SystemZCC::O: return SystemZCC::NO;
588 case SystemZCC::H: return SystemZCC::NH;
589 case SystemZCC::NLE: return SystemZCC::LE;
590 case SystemZCC::L: return SystemZCC::NL;
591 case SystemZCC::NHE: return SystemZCC::HE;
592 case SystemZCC::LH: return SystemZCC::NLH;
593 case SystemZCC::NE: return SystemZCC::E;
594 case SystemZCC::E: return SystemZCC::NE;
595 case SystemZCC::NLH: return SystemZCC::LH;
596 case SystemZCC::HE: return SystemZCC::NHE;
597 case SystemZCC::NL: return SystemZCC::L;
598 case SystemZCC::LE: return SystemZCC::NLE;
599 case SystemZCC::NH: return SystemZCC::H;
600 case SystemZCC::NO: return SystemZCC::O;
604 const TargetInstrDesc&
605 SystemZInstrInfo::getLongDispOpc(unsigned Opc) const {
607 case SystemZ::MOV32mr: return get(SystemZ::MOV32mry);
608 case SystemZ::MOV32rm: return get(SystemZ::MOV32rmy);
609 case SystemZ::MOVSX32rm16: return get(SystemZ::MOVSX32rm16y);
610 case SystemZ::MOV32m8r: return get(SystemZ::MOV32m8ry);
611 case SystemZ::MOV32m16r: return get(SystemZ::MOV32m16ry);
612 case SystemZ::MOV64m8r: return get(SystemZ::MOV64m8ry);
613 case SystemZ::MOV64m16r: return get(SystemZ::MOV64m16ry);
614 case SystemZ::MOV64m32r: return get(SystemZ::MOV64m32ry);
615 case SystemZ::MOV8mi: return get(SystemZ::MOV8miy);
616 case SystemZ::MUL32rm: return get(SystemZ::MUL32rmy);
617 case SystemZ::CMP32rm: return get(SystemZ::CMP32rmy);
618 case SystemZ::UCMP32rm: return get(SystemZ::UCMP32rmy);
619 case SystemZ::FMOV32mr: return get(SystemZ::FMOV32mry);
620 case SystemZ::FMOV64mr: return get(SystemZ::FMOV64mry);
621 case SystemZ::FMOV32rm: return get(SystemZ::FMOV32rmy);
622 case SystemZ::FMOV64rm: return get(SystemZ::FMOV64rmy);
623 default: return get(Opc);