LLVM 18.0.0git
MipsSEInstrInfo.cpp
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1//===-- MipsSEInstrInfo.cpp - Mips32/64 Instruction Information -----------===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8//
9// This file contains the Mips32/64 implementation of the TargetInstrInfo class.
10//
11//===----------------------------------------------------------------------===//
12
13#include "MipsSEInstrInfo.h"
14#include "MCTargetDesc/MipsInstPrinter.h"
15#include "MipsAnalyzeImmediate.h"
16#include "MipsMachineFunction.h"
17#include "MipsTargetMachine.h"
18#include "llvm/ADT/STLExtras.h"
19#include "llvm/CodeGen/MachineInstrBuilder.h"
20#include "llvm/CodeGen/MachineRegisterInfo.h"
21#include "llvm/MC/TargetRegistry.h"
22#include "llvm/Support/ErrorHandling.h"
23#include "llvm/Support/MathExtras.h"
24
25using namespace llvm;
26
27static unsigned getUnconditionalBranch(const MipsSubtarget &STI) {
28 if (STI.inMicroMipsMode())
29 return STI.isPositionIndependent() ? Mips::B_MM : Mips::J_MM;
30 return STI.isPositionIndependent() ? Mips::B : Mips::J;
31}
32
33MipsSEInstrInfo::MipsSEInstrInfo(const MipsSubtarget &STI)
34 : MipsInstrInfo(STI, getUnconditionalBranch(STI)), RI() {}
35
36const MipsRegisterInfo &MipsSEInstrInfo::getRegisterInfo() const {
37 return RI;
38}
39
40/// isLoadFromStackSlot - If the specified machine instruction is a direct
41/// load from a stack slot, return the virtual or physical register number of
42/// the destination along with the FrameIndex of the loaded stack slot. If
43/// not, return 0. This predicate must return 0 if the instruction has
44/// any side effects other than loading from the stack slot.
45unsigned MipsSEInstrInfo::isLoadFromStackSlot(const MachineInstr &MI,
46 int &FrameIndex) const {
47 unsigned Opc = MI.getOpcode();
48
49 if ((Opc == Mips::LW) || (Opc == Mips::LD) ||
50 (Opc == Mips::LWC1) || (Opc == Mips::LDC1) || (Opc == Mips::LDC164)) {
51 if ((MI.getOperand(1).isFI()) && // is a stack slot
52 (MI.getOperand(2).isImm()) && // the imm is zero
53 (isZeroImm(MI.getOperand(2)))) {
54 FrameIndex = MI.getOperand(1).getIndex();
55 return MI.getOperand(0).getReg();
56 }
57 }
58
59 return 0;
60}
61
62/// isStoreToStackSlot - If the specified machine instruction is a direct
63/// store to a stack slot, return the virtual or physical register number of
64/// the source reg along with the FrameIndex of the loaded stack slot. If
65/// not, return 0. This predicate must return 0 if the instruction has
66/// any side effects other than storing to the stack slot.
67unsigned MipsSEInstrInfo::isStoreToStackSlot(const MachineInstr &MI,
68 int &FrameIndex) const {
69 unsigned Opc = MI.getOpcode();
70
71 if ((Opc == Mips::SW) || (Opc == Mips::SD) ||
72 (Opc == Mips::SWC1) || (Opc == Mips::SDC1) || (Opc == Mips::SDC164)) {
73 if ((MI.getOperand(1).isFI()) && // is a stack slot
74 (MI.getOperand(2).isImm()) && // the imm is zero
75 (isZeroImm(MI.getOperand(2)))) {
76 FrameIndex = MI.getOperand(1).getIndex();
77 return MI.getOperand(0).getReg();
78 }
79 }
80 return 0;
81}
82
83void MipsSEInstrInfo::copyPhysReg(MachineBasicBlock &MBB,
84 MachineBasicBlock::iterator I,
85 const DebugLoc &DL, MCRegister DestReg,
86 MCRegister SrcReg, bool KillSrc) const {
87 unsigned Opc = 0, ZeroReg = 0;
88 bool isMicroMips = Subtarget.inMicroMipsMode();
89
90 if (Mips::GPR32RegClass.contains(DestReg)) { // Copy to CPU Reg.
91 if (Mips::GPR32RegClass.contains(SrcReg)) {
92 if (isMicroMips)
93 Opc = Mips::MOVE16_MM;
94 else
95 Opc = Mips::OR, ZeroReg = Mips::ZERO;
96 } else if (Mips::CCRRegClass.contains(SrcReg))
97 Opc = Mips::CFC1;
98 else if (Mips::FGR32RegClass.contains(SrcReg))
99 Opc = Mips::MFC1;
100 else if (Mips::HI32RegClass.contains(SrcReg)) {
101 Opc = isMicroMips ? Mips::MFHI16_MM : Mips::MFHI;
102 SrcReg = 0;
103 } else if (Mips::LO32RegClass.contains(SrcReg)) {
104 Opc = isMicroMips ? Mips::MFLO16_MM : Mips::MFLO;
105 SrcReg = 0;
106 } else if (Mips::HI32DSPRegClass.contains(SrcReg))
107 Opc = Mips::MFHI_DSP;
108 else if (Mips::LO32DSPRegClass.contains(SrcReg))
109 Opc = Mips::MFLO_DSP;
110 else if (Mips::DSPCCRegClass.contains(SrcReg)) {
111 BuildMI(MBB, I, DL, get(Mips::RDDSP), DestReg).addImm(1 << 4)
112 .addReg(SrcReg, RegState::Implicit | getKillRegState(KillSrc));
113 return;
114 }
115 else if (Mips::MSACtrlRegClass.contains(SrcReg))
116 Opc = Mips::CFCMSA;
117 }
118 else if (Mips::GPR32RegClass.contains(SrcReg)) { // Copy from CPU Reg.
119 if (Mips::CCRRegClass.contains(DestReg))
120 Opc = Mips::CTC1;
121 else if (Mips::FGR32RegClass.contains(DestReg))
122 Opc = Mips::MTC1;
123 else if (Mips::HI32RegClass.contains(DestReg))
124 Opc = Mips::MTHI, DestReg = 0;
125 else if (Mips::LO32RegClass.contains(DestReg))
126 Opc = Mips::MTLO, DestReg = 0;
127 else if (Mips::HI32DSPRegClass.contains(DestReg))
128 Opc = Mips::MTHI_DSP;
129 else if (Mips::LO32DSPRegClass.contains(DestReg))
130 Opc = Mips::MTLO_DSP;
131 else if (Mips::DSPCCRegClass.contains(DestReg)) {
132 BuildMI(MBB, I, DL, get(Mips::WRDSP))
133 .addReg(SrcReg, getKillRegState(KillSrc)).addImm(1 << 4)
134 .addReg(DestReg, RegState::ImplicitDefine);
135 return;
136 } else if (Mips::MSACtrlRegClass.contains(DestReg)) {
137 BuildMI(MBB, I, DL, get(Mips::CTCMSA))
138 .addReg(DestReg)
139 .addReg(SrcReg, getKillRegState(KillSrc));
140 return;
141 }
142 }
143 else if (Mips::FGR32RegClass.contains(DestReg, SrcReg))
144 Opc = Mips::FMOV_S;
145 else if (Mips::AFGR64RegClass.contains(DestReg, SrcReg))
146 Opc = Mips::FMOV_D32;
147 else if (Mips::FGR64RegClass.contains(DestReg, SrcReg))
148 Opc = Mips::FMOV_D64;
149 else if (Mips::GPR64RegClass.contains(DestReg)) { // Copy to CPU64 Reg.
150 if (Mips::GPR64RegClass.contains(SrcReg))
151 Opc = Mips::OR64, ZeroReg = Mips::ZERO_64;
152 else if (Mips::HI64RegClass.contains(SrcReg))
153 Opc = Mips::MFHI64, SrcReg = 0;
154 else if (Mips::LO64RegClass.contains(SrcReg))
155 Opc = Mips::MFLO64, SrcReg = 0;
156 else if (Mips::FGR64RegClass.contains(SrcReg))
157 Opc = Mips::DMFC1;
158 }
159 else if (Mips::GPR64RegClass.contains(SrcReg)) { // Copy from CPU64 Reg.
160 if (Mips::HI64RegClass.contains(DestReg))
161 Opc = Mips::MTHI64, DestReg = 0;
162 else if (Mips::LO64RegClass.contains(DestReg))
163 Opc = Mips::MTLO64, DestReg = 0;
164 else if (Mips::FGR64RegClass.contains(DestReg))
165 Opc = Mips::DMTC1;
166 }
167 else if (Mips::MSA128BRegClass.contains(DestReg)) { // Copy to MSA reg
168 if (Mips::MSA128BRegClass.contains(SrcReg))
169 Opc = Mips::MOVE_V;
170 }
171
172 assert(Opc && "Cannot copy registers");
173
174 MachineInstrBuilder MIB = BuildMI(MBB, I, DL, get(Opc));
175
176 if (DestReg)
177 MIB.addReg(DestReg, RegState::Define);
178
179 if (SrcReg)
180 MIB.addReg(SrcReg, getKillRegState(KillSrc));
181
182 if (ZeroReg)
183 MIB.addReg(ZeroReg);
184}
185
186static bool isORCopyInst(const MachineInstr &MI) {
187 switch (MI.getOpcode()) {
188 default:
189 break;
190 case Mips::OR_MM:
191 case Mips::OR:
192 if (MI.getOperand(2).getReg() == Mips::ZERO)
193 return true;
194 break;
195 case Mips::OR64:
196 if (MI.getOperand(2).getReg() == Mips::ZERO_64)
197 return true;
198 break;
199 }
200 return false;
201}
202
203/// We check for the common case of 'or', as it's MIPS' preferred instruction
204/// for GPRs but we have to check the operands to ensure that is the case.
205/// Other move instructions for MIPS are directly identifiable.
206std::optional<DestSourcePair>
207MipsSEInstrInfo::isCopyInstrImpl(const MachineInstr &MI) const {
208 if (MI.isMoveReg() || isORCopyInst(MI))
209 return DestSourcePair{MI.getOperand(0), MI.getOperand(1)};
210
211 return std::nullopt;
212}
213
214void MipsSEInstrInfo::
215storeRegToStack(MachineBasicBlock &MBB, MachineBasicBlock::iterator I,
216 Register SrcReg, bool isKill, int FI,
217 const TargetRegisterClass *RC, const TargetRegisterInfo *TRI,
218 int64_t Offset) const {
219 DebugLoc DL;
220 MachineMemOperand *MMO = GetMemOperand(MBB, FI, MachineMemOperand::MOStore);
221
222 unsigned Opc = 0;
223
224 if (Mips::GPR32RegClass.hasSubClassEq(RC))
225 Opc = Mips::SW;
226 else if (Mips::GPR64RegClass.hasSubClassEq(RC))
227 Opc = Mips::SD;
228 else if (Mips::ACC64RegClass.hasSubClassEq(RC))
229 Opc = Mips::STORE_ACC64;
230 else if (Mips::ACC64DSPRegClass.hasSubClassEq(RC))
231 Opc = Mips::STORE_ACC64DSP;
232 else if (Mips::ACC128RegClass.hasSubClassEq(RC))
233 Opc = Mips::STORE_ACC128;
234 else if (Mips::DSPCCRegClass.hasSubClassEq(RC))
235 Opc = Mips::STORE_CCOND_DSP;
236 else if (Mips::FGR32RegClass.hasSubClassEq(RC))
237 Opc = Mips::SWC1;
238 else if (Mips::AFGR64RegClass.hasSubClassEq(RC))
239 Opc = Mips::SDC1;
240 else if (Mips::FGR64RegClass.hasSubClassEq(RC))
241 Opc = Mips::SDC164;
242 else if (TRI->isTypeLegalForClass(*RC, MVT::v16i8))
243 Opc = Mips::ST_B;
244 else if (TRI->isTypeLegalForClass(*RC, MVT::v8i16) ||
245 TRI->isTypeLegalForClass(*RC, MVT::v8f16))
246 Opc = Mips::ST_H;
247 else if (TRI->isTypeLegalForClass(*RC, MVT::v4i32) ||
248 TRI->isTypeLegalForClass(*RC, MVT::v4f32))
249 Opc = Mips::ST_W;
250 else if (TRI->isTypeLegalForClass(*RC, MVT::v2i64) ||
251 TRI->isTypeLegalForClass(*RC, MVT::v2f64))
252 Opc = Mips::ST_D;
253 else if (Mips::LO32RegClass.hasSubClassEq(RC))
254 Opc = Mips::SW;
255 else if (Mips::LO64RegClass.hasSubClassEq(RC))
256 Opc = Mips::SD;
257 else if (Mips::HI32RegClass.hasSubClassEq(RC))
258 Opc = Mips::SW;
259 else if (Mips::HI64RegClass.hasSubClassEq(RC))
260 Opc = Mips::SD;
261 else if (Mips::DSPRRegClass.hasSubClassEq(RC))
262 Opc = Mips::SWDSP;
263
264 // Hi, Lo are normally caller save but they are callee save
265 // for interrupt handling.
266 const Function &Func = MBB.getParent()->getFunction();
267 if (Func.hasFnAttribute("interrupt")) {
268 if (Mips::HI32RegClass.hasSubClassEq(RC)) {
269 BuildMI(MBB, I, DL, get(Mips::MFHI), Mips::K0);
270 SrcReg = Mips::K0;
271 } else if (Mips::HI64RegClass.hasSubClassEq(RC)) {
272 BuildMI(MBB, I, DL, get(Mips::MFHI64), Mips::K0_64);
273 SrcReg = Mips::K0_64;
274 } else if (Mips::LO32RegClass.hasSubClassEq(RC)) {
275 BuildMI(MBB, I, DL, get(Mips::MFLO), Mips::K0);
276 SrcReg = Mips::K0;
277 } else if (Mips::LO64RegClass.hasSubClassEq(RC)) {
278 BuildMI(MBB, I, DL, get(Mips::MFLO64), Mips::K0_64);
279 SrcReg = Mips::K0_64;
280 }
281 }
282
283 assert(Opc && "Register class not handled!");
284 BuildMI(MBB, I, DL, get(Opc)).addReg(SrcReg, getKillRegState(isKill))
285 .addFrameIndex(FI).addImm(Offset).addMemOperand(MMO);
286}
287
288void MipsSEInstrInfo::
289loadRegFromStack(MachineBasicBlock &MBB, MachineBasicBlock::iterator I,
290 Register DestReg, int FI, const TargetRegisterClass *RC,
291 const TargetRegisterInfo *TRI, int64_t Offset) const {
292 DebugLoc DL;
293 if (I != MBB.end()) DL = I->getDebugLoc();
294 MachineMemOperand *MMO = GetMemOperand(MBB, FI, MachineMemOperand::MOLoad);
295 unsigned Opc = 0;
296
297 const Function &Func = MBB.getParent()->getFunction();
298 bool ReqIndirectLoad = Func.hasFnAttribute("interrupt") &&
299 (DestReg == Mips::LO0 || DestReg == Mips::LO0_64 ||
300 DestReg == Mips::HI0 || DestReg == Mips::HI0_64);
301
302 if (Mips::GPR32RegClass.hasSubClassEq(RC))
303 Opc = Mips::LW;
304 else if (Mips::GPR64RegClass.hasSubClassEq(RC))
305 Opc = Mips::LD;
306 else if (Mips::ACC64RegClass.hasSubClassEq(RC))
307 Opc = Mips::LOAD_ACC64;
308 else if (Mips::ACC64DSPRegClass.hasSubClassEq(RC))
309 Opc = Mips::LOAD_ACC64DSP;
310 else if (Mips::ACC128RegClass.hasSubClassEq(RC))
311 Opc = Mips::LOAD_ACC128;
312 else if (Mips::DSPCCRegClass.hasSubClassEq(RC))
313 Opc = Mips::LOAD_CCOND_DSP;
314 else if (Mips::FGR32RegClass.hasSubClassEq(RC))
315 Opc = Mips::LWC1;
316 else if (Mips::AFGR64RegClass.hasSubClassEq(RC))
317 Opc = Mips::LDC1;
318 else if (Mips::FGR64RegClass.hasSubClassEq(RC))
319 Opc = Mips::LDC164;
320 else if (TRI->isTypeLegalForClass(*RC, MVT::v16i8))
321 Opc = Mips::LD_B;
322 else if (TRI->isTypeLegalForClass(*RC, MVT::v8i16) ||
323 TRI->isTypeLegalForClass(*RC, MVT::v8f16))
324 Opc = Mips::LD_H;
325 else if (TRI->isTypeLegalForClass(*RC, MVT::v4i32) ||
326 TRI->isTypeLegalForClass(*RC, MVT::v4f32))
327 Opc = Mips::LD_W;
328 else if (TRI->isTypeLegalForClass(*RC, MVT::v2i64) ||
329 TRI->isTypeLegalForClass(*RC, MVT::v2f64))
330 Opc = Mips::LD_D;
331 else if (Mips::HI32RegClass.hasSubClassEq(RC))
332 Opc = Mips::LW;
333 else if (Mips::HI64RegClass.hasSubClassEq(RC))
334 Opc = Mips::LD;
335 else if (Mips::LO32RegClass.hasSubClassEq(RC))
336 Opc = Mips::LW;
337 else if (Mips::LO64RegClass.hasSubClassEq(RC))
338 Opc = Mips::LD;
339 else if (Mips::DSPRRegClass.hasSubClassEq(RC))
340 Opc = Mips::LWDSP;
341
342 assert(Opc && "Register class not handled!");
343
344 if (!ReqIndirectLoad)
345 BuildMI(MBB, I, DL, get(Opc), DestReg)
346 .addFrameIndex(FI)
347 .addImm(Offset)
348 .addMemOperand(MMO);
349 else {
350 // Load HI/LO through K0. Notably the DestReg is encoded into the
351 // instruction itself.
352 unsigned Reg = Mips::K0;
353 unsigned LdOp = Mips::MTLO;
354 if (DestReg == Mips::HI0)
355 LdOp = Mips::MTHI;
356
357 if (Subtarget.getABI().ArePtrs64bit()) {
358 Reg = Mips::K0_64;
359 if (DestReg == Mips::HI0_64)
360 LdOp = Mips::MTHI64;
361 else
362 LdOp = Mips::MTLO64;
363 }
364
365 BuildMI(MBB, I, DL, get(Opc), Reg)
366 .addFrameIndex(FI)
367 .addImm(Offset)
368 .addMemOperand(MMO);
369 BuildMI(MBB, I, DL, get(LdOp)).addReg(Reg);
370 }
371}
372
373bool MipsSEInstrInfo::expandPostRAPseudo(MachineInstr &MI) const {
374 MachineBasicBlock &MBB = *MI.getParent();
375 bool isMicroMips = Subtarget.inMicroMipsMode();
376 unsigned Opc;
377
378 switch (MI.getDesc().getOpcode()) {
379 default:
380 return false;
381 case Mips::RetRA:
382 expandRetRA(MBB, MI);
383 break;
384 case Mips::ERet:
385 expandERet(MBB, MI);
386 break;
387 case Mips::PseudoMFHI:
388 expandPseudoMFHiLo(MBB, MI, Mips::MFHI);
389 break;
390 case Mips::PseudoMFHI_MM:
391 expandPseudoMFHiLo(MBB, MI, Mips::MFHI16_MM);
392 break;
393 case Mips::PseudoMFLO:
394 expandPseudoMFHiLo(MBB, MI, Mips::MFLO);
395 break;
396 case Mips::PseudoMFLO_MM:
397 expandPseudoMFHiLo(MBB, MI, Mips::MFLO16_MM);
398 break;
399 case Mips::PseudoMFHI64:
400 expandPseudoMFHiLo(MBB, MI, Mips::MFHI64);
401 break;
402 case Mips::PseudoMFLO64:
403 expandPseudoMFHiLo(MBB, MI, Mips::MFLO64);
404 break;
405 case Mips::PseudoMTLOHI:
406 expandPseudoMTLoHi(MBB, MI, Mips::MTLO, Mips::MTHI, false);
407 break;
408 case Mips::PseudoMTLOHI64:
409 expandPseudoMTLoHi(MBB, MI, Mips::MTLO64, Mips::MTHI64, false);
410 break;
411 case Mips::PseudoMTLOHI_DSP:
412 expandPseudoMTLoHi(MBB, MI, Mips::MTLO_DSP, Mips::MTHI_DSP, true);
413 break;
414 case Mips::PseudoMTLOHI_MM:
415 expandPseudoMTLoHi(MBB, MI, Mips::MTLO_MM, Mips::MTHI_MM, false);
416 break;
417 case Mips::PseudoCVT_S_W:
418 expandCvtFPInt(MBB, MI, Mips::CVT_S_W, Mips::MTC1, false);
419 break;
420 case Mips::PseudoCVT_D32_W:
421 Opc = isMicroMips ? Mips::CVT_D32_W_MM : Mips::CVT_D32_W;
422 expandCvtFPInt(MBB, MI, Opc, Mips::MTC1, false);
423 break;
424 case Mips::PseudoCVT_S_L:
425 expandCvtFPInt(MBB, MI, Mips::CVT_S_L, Mips::DMTC1, true);
426 break;
427 case Mips::PseudoCVT_D64_W:
428 Opc = isMicroMips ? Mips::CVT_D64_W_MM : Mips::CVT_D64_W;
429 expandCvtFPInt(MBB, MI, Opc, Mips::MTC1, true);
430 break;
431 case Mips::PseudoCVT_D64_L:
432 expandCvtFPInt(MBB, MI, Mips::CVT_D64_L, Mips::DMTC1, true);
433 break;
434 case Mips::BuildPairF64:
435 expandBuildPairF64(MBB, MI, isMicroMips, false);
436 break;
437 case Mips::BuildPairF64_64:
438 expandBuildPairF64(MBB, MI, isMicroMips, true);
439 break;
440 case Mips::ExtractElementF64:
441 expandExtractElementF64(MBB, MI, isMicroMips, false);
442 break;
443 case Mips::ExtractElementF64_64:
444 expandExtractElementF64(MBB, MI, isMicroMips, true);
445 break;
446 case Mips::MIPSeh_return32:
447 case Mips::MIPSeh_return64:
448 expandEhReturn(MBB, MI);
449 break;
450 }
451
452 MBB.erase(MI);
453 return true;
454}
455
456/// isBranchWithImm - Return true if the branch contains an immediate
457/// operand (\see lib/Target/Mips/MipsBranchExpansion.cpp).
458bool MipsSEInstrInfo::isBranchWithImm(unsigned Opc) const {
459 switch (Opc) {
460 default:
461 return false;
462 case Mips::BBIT0:
463 case Mips::BBIT1:
464 case Mips::BBIT032:
465 case Mips::BBIT132:
466 return true;
467 }
468}
469
470/// getOppositeBranchOpc - Return the inverse of the specified
471/// opcode, e.g. turning BEQ to BNE.
472unsigned MipsSEInstrInfo::getOppositeBranchOpc(unsigned Opc) const {
473 switch (Opc) {
474 default: llvm_unreachable("Illegal opcode!");
475 case Mips::BEQ: return Mips::BNE;
476 case Mips::BEQ_MM: return Mips::BNE_MM;
477 case Mips::BNE: return Mips::BEQ;
478 case Mips::BNE_MM: return Mips::BEQ_MM;
479 case Mips::BGTZ: return Mips::BLEZ;
480 case Mips::BGEZ: return Mips::BLTZ;
481 case Mips::BLTZ: return Mips::BGEZ;
482 case Mips::BLEZ: return Mips::BGTZ;
483 case Mips::BGTZ_MM: return Mips::BLEZ_MM;
484 case Mips::BGEZ_MM: return Mips::BLTZ_MM;
485 case Mips::BLTZ_MM: return Mips::BGEZ_MM;
486 case Mips::BLEZ_MM: return Mips::BGTZ_MM;
487 case Mips::BEQ64: return Mips::BNE64;
488 case Mips::BNE64: return Mips::BEQ64;
489 case Mips::BGTZ64: return Mips::BLEZ64;
490 case Mips::BGEZ64: return Mips::BLTZ64;
491 case Mips::BLTZ64: return Mips::BGEZ64;
492 case Mips::BLEZ64: return Mips::BGTZ64;
493 case Mips::BC1T: return Mips::BC1F;
494 case Mips::BC1F: return Mips::BC1T;
495 case Mips::BC1T_MM: return Mips::BC1F_MM;
496 case Mips::BC1F_MM: return Mips::BC1T_MM;
497 case Mips::BEQZ16_MM: return Mips::BNEZ16_MM;
498 case Mips::BNEZ16_MM: return Mips::BEQZ16_MM;
499 case Mips::BEQZC_MM: return Mips::BNEZC_MM;
500 case Mips::BNEZC_MM: return Mips::BEQZC_MM;
501 case Mips::BEQZC: return Mips::BNEZC;
502 case Mips::BNEZC: return Mips::BEQZC;
503 case Mips::BLEZC: return Mips::BGTZC;
504 case Mips::BGEZC: return Mips::BLTZC;
505 case Mips::BGEC: return Mips::BLTC;
506 case Mips::BGTZC: return Mips::BLEZC;
507 case Mips::BLTZC: return Mips::BGEZC;
508 case Mips::BLTC: return Mips::BGEC;
509 case Mips::BGEUC: return Mips::BLTUC;
510 case Mips::BLTUC: return Mips::BGEUC;
511 case Mips::BEQC: return Mips::BNEC;
512 case Mips::BNEC: return Mips::BEQC;
513 case Mips::BC1EQZ: return Mips::BC1NEZ;
514 case Mips::BC1NEZ: return Mips::BC1EQZ;
515 case Mips::BEQZC_MMR6: return Mips::BNEZC_MMR6;
516 case Mips::BNEZC_MMR6: return Mips::BEQZC_MMR6;
517 case Mips::BLEZC_MMR6: return Mips::BGTZC_MMR6;
518 case Mips::BGEZC_MMR6: return Mips::BLTZC_MMR6;
519 case Mips::BGEC_MMR6: return Mips::BLTC_MMR6;
520 case Mips::BGTZC_MMR6: return Mips::BLEZC_MMR6;
521 case Mips::BLTZC_MMR6: return Mips::BGEZC_MMR6;
522 case Mips::BLTC_MMR6: return Mips::BGEC_MMR6;
523 case Mips::BGEUC_MMR6: return Mips::BLTUC_MMR6;
524 case Mips::BLTUC_MMR6: return Mips::BGEUC_MMR6;
525 case Mips::BEQC_MMR6: return Mips::BNEC_MMR6;
526 case Mips::BNEC_MMR6: return Mips::BEQC_MMR6;
527 case Mips::BC1EQZC_MMR6: return Mips::BC1NEZC_MMR6;
528 case Mips::BC1NEZC_MMR6: return Mips::BC1EQZC_MMR6;
529 case Mips::BEQZC64: return Mips::BNEZC64;
530 case Mips::BNEZC64: return Mips::BEQZC64;
531 case Mips::BEQC64: return Mips::BNEC64;
532 case Mips::BNEC64: return Mips::BEQC64;
533 case Mips::BGEC64: return Mips::BLTC64;
534 case Mips::BGEUC64: return Mips::BLTUC64;
535 case Mips::BLTC64: return Mips::BGEC64;
536 case Mips::BLTUC64: return Mips::BGEUC64;
537 case Mips::BGTZC64: return Mips::BLEZC64;
538 case Mips::BGEZC64: return Mips::BLTZC64;
539 case Mips::BLTZC64: return Mips::BGEZC64;
540 case Mips::BLEZC64: return Mips::BGTZC64;
541 case Mips::BBIT0: return Mips::BBIT1;
542 case Mips::BBIT1: return Mips::BBIT0;
543 case Mips::BBIT032: return Mips::BBIT132;
544 case Mips::BBIT132: return Mips::BBIT032;
545 case Mips::BZ_B: return Mips::BNZ_B;
546 case Mips::BZ_H: return Mips::BNZ_H;
547 case Mips::BZ_W: return Mips::BNZ_W;
548 case Mips::BZ_D: return Mips::BNZ_D;
549 case Mips::BZ_V: return Mips::BNZ_V;
550 case Mips::BNZ_B: return Mips::BZ_B;
551 case Mips::BNZ_H: return Mips::BZ_H;
552 case Mips::BNZ_W: return Mips::BZ_W;
553 case Mips::BNZ_D: return Mips::BZ_D;
554 case Mips::BNZ_V: return Mips::BZ_V;
555 }
556}
557
558/// Adjust SP by Amount bytes.
559void MipsSEInstrInfo::adjustStackPtr(unsigned SP, int64_t Amount,
560 MachineBasicBlock &MBB,
561 MachineBasicBlock::iterator I) const {
562 MipsABIInfo ABI = Subtarget.getABI();
563 DebugLoc DL;
564 unsigned ADDiu = ABI.GetPtrAddiuOp();
565
566 if (Amount == 0)
567 return;
568
569 if (isInt<16>(Amount)) {
570 // addi sp, sp, amount
571 BuildMI(MBB, I, DL, get(ADDiu), SP).addReg(SP).addImm(Amount);
572 } else {
573 // For numbers which are not 16bit integers we synthesize Amount inline
574 // then add or subtract it from sp.
575 unsigned Opc = ABI.GetPtrAdduOp();
576 if (Amount < 0) {
577 Opc = ABI.GetPtrSubuOp();
578 Amount = -Amount;
579 }
580 unsigned Reg = loadImmediate(Amount, MBB, I, DL, nullptr);
581 BuildMI(MBB, I, DL, get(Opc), SP).addReg(SP).addReg(Reg, RegState::Kill);
582 }
583}
584
585/// This function generates the sequence of instructions needed to get the
586/// result of adding register REG and immediate IMM.
587unsigned MipsSEInstrInfo::loadImmediate(int64_t Imm, MachineBasicBlock &MBB,
588 MachineBasicBlock::iterator II,
589 const DebugLoc &DL,
590 unsigned *NewImm) const {
591 MipsAnalyzeImmediate AnalyzeImm;
592 const MipsSubtarget &STI = Subtarget;
593 MachineRegisterInfo &RegInfo = MBB.getParent()->getRegInfo();
594 unsigned Size = STI.isABI_N64() ? 64 : 32;
595 unsigned LUi = STI.isABI_N64() ? Mips::LUi64 : Mips::LUi;
596 unsigned ZEROReg = STI.isABI_N64() ? Mips::ZERO_64 : Mips::ZERO;
597 const TargetRegisterClass *RC = STI.isABI_N64() ?
598 &Mips::GPR64RegClass : &Mips::GPR32RegClass;
599 bool LastInstrIsADDiu = NewImm;
600
601 const MipsAnalyzeImmediate::InstSeq &Seq =
602 AnalyzeImm.Analyze(Imm, Size, LastInstrIsADDiu);
603 MipsAnalyzeImmediate::InstSeq::const_iterator Inst = Seq.begin();
604
605 assert(Seq.size() && (!LastInstrIsADDiu || (Seq.size() > 1)));
606
607 // The first instruction can be a LUi, which is different from other
608 // instructions (ADDiu, ORI and SLL) in that it does not have a register
609 // operand.
610 Register Reg = RegInfo.createVirtualRegister(RC);
611
612 if (Inst->Opc == LUi)
613 BuildMI(MBB, II, DL, get(LUi), Reg).addImm(SignExtend64<16>(Inst->ImmOpnd));
614 else
615 BuildMI(MBB, II, DL, get(Inst->Opc), Reg).addReg(ZEROReg)
616 .addImm(SignExtend64<16>(Inst->ImmOpnd));
617
618 // Build the remaining instructions in Seq.
619 for (++Inst; Inst != Seq.end() - LastInstrIsADDiu; ++Inst)
620 BuildMI(MBB, II, DL, get(Inst->Opc), Reg).addReg(Reg, RegState::Kill)
621 .addImm(SignExtend64<16>(Inst->ImmOpnd));
622
623 if (LastInstrIsADDiu)
624 *NewImm = Inst->ImmOpnd;
625
626 return Reg;
627}
628
629unsigned MipsSEInstrInfo::getAnalyzableBrOpc(unsigned Opc) const {
630 return (Opc == Mips::BEQ || Opc == Mips::BEQ_MM || Opc == Mips::BNE ||
631 Opc == Mips::BNE_MM || Opc == Mips::BGTZ || Opc == Mips::BGEZ ||
632 Opc == Mips::BLTZ || Opc == Mips::BLEZ || Opc == Mips::BEQ64 ||
633 Opc == Mips::BNE64 || Opc == Mips::BGTZ64 || Opc == Mips::BGEZ64 ||
634 Opc == Mips::BLTZ64 || Opc == Mips::BLEZ64 || Opc == Mips::BC1T ||
635 Opc == Mips::BC1F || Opc == Mips::B || Opc == Mips::J ||
636 Opc == Mips::J_MM || Opc == Mips::B_MM || Opc == Mips::BEQZC_MM ||
637 Opc == Mips::BNEZC_MM || Opc == Mips::BEQC || Opc == Mips::BNEC ||
638 Opc == Mips::BLTC || Opc == Mips::BGEC || Opc == Mips::BLTUC ||
639 Opc == Mips::BGEUC || Opc == Mips::BGTZC || Opc == Mips::BLEZC ||
640 Opc == Mips::BGEZC || Opc == Mips::BLTZC || Opc == Mips::BEQZC ||
641 Opc == Mips::BNEZC || Opc == Mips::BEQZC64 || Opc == Mips::BNEZC64 ||
642 Opc == Mips::BEQC64 || Opc == Mips::BNEC64 || Opc == Mips::BGEC64 ||
643 Opc == Mips::BGEUC64 || Opc == Mips::BLTC64 || Opc == Mips::BLTUC64 ||
644 Opc == Mips::BGTZC64 || Opc == Mips::BGEZC64 ||
645 Opc == Mips::BLTZC64 || Opc == Mips::BLEZC64 || Opc == Mips::BC ||
646 Opc == Mips::BBIT0 || Opc == Mips::BBIT1 || Opc == Mips::BBIT032 ||
647 Opc == Mips::BBIT132 || Opc == Mips::BC_MMR6 ||
648 Opc == Mips::BEQC_MMR6 || Opc == Mips::BNEC_MMR6 ||
649 Opc == Mips::BLTC_MMR6 || Opc == Mips::BGEC_MMR6 ||
650 Opc == Mips::BLTUC_MMR6 || Opc == Mips::BGEUC_MMR6 ||
651 Opc == Mips::BGTZC_MMR6 || Opc == Mips::BLEZC_MMR6 ||
652 Opc == Mips::BGEZC_MMR6 || Opc == Mips::BLTZC_MMR6 ||
653 Opc == Mips::BEQZC_MMR6 || Opc == Mips::BNEZC_MMR6) ? Opc : 0;
654}
655
656void MipsSEInstrInfo::expandRetRA(MachineBasicBlock &MBB,
657 MachineBasicBlock::iterator I) const {
658
659 MachineInstrBuilder MIB;
660 if (Subtarget.isGP64bit())
661 MIB = BuildMI(MBB, I, I->getDebugLoc(), get(Mips::PseudoReturn64))
662 .addReg(Mips::RA_64, RegState::Undef);
663 else
664 MIB = BuildMI(MBB, I, I->getDebugLoc(), get(Mips::PseudoReturn))
665 .addReg(Mips::RA, RegState::Undef);
666
667 // Retain any imp-use flags.
668 for (auto & MO : I->operands()) {
669 if (MO.isImplicit())
670 MIB.add(MO);
671 }
672}
673
674void MipsSEInstrInfo::expandERet(MachineBasicBlock &MBB,
675 MachineBasicBlock::iterator I) const {
676 BuildMI(MBB, I, I->getDebugLoc(), get(Mips::ERET));
677}
678
679std::pair<bool, bool>
680MipsSEInstrInfo::compareOpndSize(unsigned Opc,
681 const MachineFunction &MF) const {
682 const MCInstrDesc &Desc = get(Opc);
683 assert(Desc.NumOperands == 2 && "Unary instruction expected.");
684 const MipsRegisterInfo *RI = &getRegisterInfo();
685 unsigned DstRegSize = RI->getRegSizeInBits(*getRegClass(Desc, 0, RI, MF));
686 unsigned SrcRegSize = RI->getRegSizeInBits(*getRegClass(Desc, 1, RI, MF));
687
688 return std::make_pair(DstRegSize > SrcRegSize, DstRegSize < SrcRegSize);
689}
690
691void MipsSEInstrInfo::expandPseudoMFHiLo(MachineBasicBlock &MBB,
692 MachineBasicBlock::iterator I,
693 unsigned NewOpc) const {
694 BuildMI(MBB, I, I->getDebugLoc(), get(NewOpc), I->getOperand(0).getReg());
695}
696
697void MipsSEInstrInfo::expandPseudoMTLoHi(MachineBasicBlock &MBB,
698 MachineBasicBlock::iterator I,
699 unsigned LoOpc,
700 unsigned HiOpc,
701 bool HasExplicitDef) const {
702 // Expand
703 // lo_hi pseudomtlohi $gpr0, $gpr1
704 // to these two instructions:
705 // mtlo $gpr0
706 // mthi $gpr1
707
708 DebugLoc DL = I->getDebugLoc();
709 const MachineOperand &SrcLo = I->getOperand(1), &SrcHi = I->getOperand(2);
710 MachineInstrBuilder LoInst = BuildMI(MBB, I, DL, get(LoOpc));
711 MachineInstrBuilder HiInst = BuildMI(MBB, I, DL, get(HiOpc));
712
713 // Add lo/hi registers if the mtlo/hi instructions created have explicit
714 // def registers.
715 if (HasExplicitDef) {
716 Register DstReg = I->getOperand(0).getReg();
717 Register DstLo = getRegisterInfo().getSubReg(DstReg, Mips::sub_lo);
718 Register DstHi = getRegisterInfo().getSubReg(DstReg, Mips::sub_hi);
719 LoInst.addReg(DstLo, RegState::Define);
720 HiInst.addReg(DstHi, RegState::Define);
721 }
722
723 LoInst.addReg(SrcLo.getReg(), getKillRegState(SrcLo.isKill()));
724 HiInst.addReg(SrcHi.getReg(), getKillRegState(SrcHi.isKill()));
725}
726
727void MipsSEInstrInfo::expandCvtFPInt(MachineBasicBlock &MBB,
728 MachineBasicBlock::iterator I,
729 unsigned CvtOpc, unsigned MovOpc,
730 bool IsI64) const {
731 const MCInstrDesc &CvtDesc = get(CvtOpc), &MovDesc = get(MovOpc);
732 const MachineOperand &Dst = I->getOperand(0), &Src = I->getOperand(1);
733 unsigned DstReg = Dst.getReg(), SrcReg = Src.getReg(), TmpReg = DstReg;
734 unsigned KillSrc = getKillRegState(Src.isKill());
735 DebugLoc DL = I->getDebugLoc();
736 bool DstIsLarger, SrcIsLarger;
737
738 std::tie(DstIsLarger, SrcIsLarger) =
739 compareOpndSize(CvtOpc, *MBB.getParent());
740
741 if (DstIsLarger)
742 TmpReg = getRegisterInfo().getSubReg(DstReg, Mips::sub_lo);
743
744 if (SrcIsLarger)
745 DstReg = getRegisterInfo().getSubReg(DstReg, Mips::sub_lo);
746
747 BuildMI(MBB, I, DL, MovDesc, TmpReg).addReg(SrcReg, KillSrc);
748 BuildMI(MBB, I, DL, CvtDesc, DstReg).addReg(TmpReg, RegState::Kill);
749}
750
751void MipsSEInstrInfo::expandExtractElementF64(MachineBasicBlock &MBB,
752 MachineBasicBlock::iterator I,
753 bool isMicroMips,
754 bool FP64) const {
755 Register DstReg = I->getOperand(0).getReg();
756 Register SrcReg = I->getOperand(1).getReg();
757 unsigned N = I->getOperand(2).getImm();
758 DebugLoc dl = I->getDebugLoc();
759
760 assert(N < 2 && "Invalid immediate");
761 unsigned SubIdx = N ? Mips::sub_hi : Mips::sub_lo;
762 Register SubReg = getRegisterInfo().getSubReg(SrcReg, SubIdx);
763
764 // FPXX on MIPS-II or MIPS32r1 should have been handled with a spill/reload
765 // in MipsSEFrameLowering.cpp.
766 assert(!(Subtarget.isABI_FPXX() && !Subtarget.hasMips32r2()));
767
768 // FP64A (FP64 with nooddspreg) should have been handled with a spill/reload
769 // in MipsSEFrameLowering.cpp.
770 assert(!(Subtarget.isFP64bit() && !Subtarget.useOddSPReg()));
771
772 if (SubIdx == Mips::sub_hi && Subtarget.hasMTHC1()) {
773 // FIXME: Strictly speaking MFHC1 only reads the top 32-bits however, we
774 // claim to read the whole 64-bits as part of a white lie used to
775 // temporarily work around a widespread bug in the -mfp64 support.
776 // The problem is that none of the 32-bit fpu ops mention the fact
777 // that they clobber the upper 32-bits of the 64-bit FPR. Fixing that
778 // requires a major overhaul of the FPU implementation which can't
779 // be done right now due to time constraints.
780 // MFHC1 is one of two instructions that are affected since they are
781 // the only instructions that don't read the lower 32-bits.
782 // We therefore pretend that it reads the bottom 32-bits to
783 // artificially create a dependency and prevent the scheduler
784 // changing the behaviour of the code.
785 BuildMI(MBB, I, dl,
786 get(isMicroMips ? (FP64 ? Mips::MFHC1_D64_MM : Mips::MFHC1_D32_MM)
787 : (FP64 ? Mips::MFHC1_D64 : Mips::MFHC1_D32)),
788 DstReg)
789 .addReg(SrcReg);
790 } else
791 BuildMI(MBB, I, dl, get(Mips::MFC1), DstReg).addReg(SubReg);
792}
793
794void MipsSEInstrInfo::expandBuildPairF64(MachineBasicBlock &MBB,
795 MachineBasicBlock::iterator I,
796 bool isMicroMips, bool FP64) const {
797 Register DstReg = I->getOperand(0).getReg();
798 unsigned LoReg = I->getOperand(1).getReg(), HiReg = I->getOperand(2).getReg();
799 const MCInstrDesc& Mtc1Tdd = get(Mips::MTC1);
800 DebugLoc dl = I->getDebugLoc();
801 const TargetRegisterInfo &TRI = getRegisterInfo();
802
803 // When mthc1 is available, use:
804 // mtc1 Lo, $fp
805 // mthc1 Hi, $fp
806 //
807 // Otherwise, for O32 FPXX ABI:
808 // spill + reload via ldc1
809 // This case is handled by the frame lowering code.
810 //
811 // Otherwise, for FP32:
812 // mtc1 Lo, $fp
813 // mtc1 Hi, $fp + 1
814 //
815 // The case where dmtc1 is available doesn't need to be handled here
816 // because it never creates a BuildPairF64 node.
817
818 // FPXX on MIPS-II or MIPS32r1 should have been handled with a spill/reload
819 // in MipsSEFrameLowering.cpp.
820 assert(!(Subtarget.isABI_FPXX() && !Subtarget.hasMips32r2()));
821
822 // FP64A (FP64 with nooddspreg) should have been handled with a spill/reload
823 // in MipsSEFrameLowering.cpp.
824 assert(!(Subtarget.isFP64bit() && !Subtarget.useOddSPReg()));
825
826 BuildMI(MBB, I, dl, Mtc1Tdd, TRI.getSubReg(DstReg, Mips::sub_lo))
827 .addReg(LoReg);
828
829 if (Subtarget.hasMTHC1()) {
830 // FIXME: The .addReg(DstReg) is a white lie used to temporarily work
831 // around a widespread bug in the -mfp64 support.
832 // The problem is that none of the 32-bit fpu ops mention the fact
833 // that they clobber the upper 32-bits of the 64-bit FPR. Fixing that
834 // requires a major overhaul of the FPU implementation which can't
835 // be done right now due to time constraints.
836 // MTHC1 is one of two instructions that are affected since they are
837 // the only instructions that don't read the lower 32-bits.
838 // We therefore pretend that it reads the bottom 32-bits to
839 // artificially create a dependency and prevent the scheduler
840 // changing the behaviour of the code.
841 BuildMI(MBB, I, dl,
842 get(isMicroMips ? (FP64 ? Mips::MTHC1_D64_MM : Mips::MTHC1_D32_MM)
843 : (FP64 ? Mips::MTHC1_D64 : Mips::MTHC1_D32)),
844 DstReg)
845 .addReg(DstReg)
846 .addReg(HiReg);
847 } else if (Subtarget.isABI_FPXX())
848 llvm_unreachable("BuildPairF64 not expanded in frame lowering code!");
849 else
850 BuildMI(MBB, I, dl, Mtc1Tdd, TRI.getSubReg(DstReg, Mips::sub_hi))
851 .addReg(HiReg);
852}
853
854void MipsSEInstrInfo::expandEhReturn(MachineBasicBlock &MBB,
855 MachineBasicBlock::iterator I) const {
856 // This pseudo instruction is generated as part of the lowering of
857 // ISD::EH_RETURN. We convert it to a stack increment by OffsetReg, and
858 // indirect jump to TargetReg
859 MipsABIInfo ABI = Subtarget.getABI();
860 unsigned ADDU = ABI.GetPtrAdduOp();
861 unsigned SP = Subtarget.isGP64bit() ? Mips::SP_64 : Mips::SP;
862 unsigned RA = Subtarget.isGP64bit() ? Mips::RA_64 : Mips::RA;
863 unsigned T9 = Subtarget.isGP64bit() ? Mips::T9_64 : Mips::T9;
864 unsigned ZERO = Subtarget.isGP64bit() ? Mips::ZERO_64 : Mips::ZERO;
865 Register OffsetReg = I->getOperand(0).getReg();
866 Register TargetReg = I->getOperand(1).getReg();
867
868 // addu $ra, $v0, $zero
869 // addu $sp, $sp, $v1
870 // jr $ra (via RetRA)
871 const TargetMachine &TM = MBB.getParent()->getTarget();
872 if (TM.isPositionIndependent())
873 BuildMI(MBB, I, I->getDebugLoc(), get(ADDU), T9)
874 .addReg(TargetReg)
875 .addReg(ZERO);
876 BuildMI(MBB, I, I->getDebugLoc(), get(ADDU), RA)
877 .addReg(TargetReg)
878 .addReg(ZERO);
879 BuildMI(MBB, I, I->getDebugLoc(), get(ADDU), SP).addReg(SP).addReg(OffsetReg);
880 expandRetRA(MBB, I);
881}
882
883const MipsInstrInfo *llvm::createMipsSEInstrInfo(const MipsSubtarget &STI) {
884 return new MipsSEInstrInfo(STI);
885}
SubReg
unsigned SubReg
Definition: AArch64AdvSIMDScalarPass.cpp:104
getRegClass
static const TargetRegisterClass * getRegClass(const MachineInstr &MI, Register Reg)
Definition: AArch64InstrInfo.cpp:3293
MBB
MachineBasicBlock & MBB
Definition: AArch64SLSHardening.cpp:74
DL
MachineBasicBlock MachineBasicBlock::iterator DebugLoc DL
Definition: AArch64SLSHardening.cpp:76
BlockExecWeight::ZERO
@ ZERO
Special weight used for cases with exact zero probability.
Size
uint64_t Size
Definition: ELFObjHandler.cpp:81
MI
IRTranslator LLVM IR MI
Definition: IRTranslator.cpp:110
I
#define I(x, y, z)
Definition: MD5.cpp:58
TRI
unsigned const TargetRegisterInfo * TRI
Definition: MachineSink.cpp:1627
isORCopyInst
static bool isORCopyInst(const MachineInstr &MI)
Definition: MipsSEInstrInfo.cpp:186
getUnconditionalBranch
static unsigned getUnconditionalBranch(const MipsSubtarget &STI)
Definition: MipsSEInstrInfo.cpp:27
isMicroMips
static bool isMicroMips(const MCSubtargetInfo *STI)
Definition: MipsTargetStreamer.cpp:39
TM
const char LLVMTargetMachineRef TM
Definition: PassBuilderBindings.cpp:47
assert
assert(ImpDefSCC.getReg()==AMDGPU::SCC &&ImpDefSCC.isDef())
RA
SI optimize exec mask operations pre RA
Definition: SIOptimizeExecMaskingPreRA.cpp:71
STLExtras.h
This file contains some templates that are useful if you are working with the STL at all.
contains
static bool contains(SmallPtrSetImpl< ConstantExpr * > &Cache, ConstantExpr *Expr, Constant *C)
Definition: Value.cpp:470
llvm::DebugLoc
A debug info location.
Definition: DebugLoc.h:33
llvm::MCInstrDesc
Describe properties that are true of each instruction in the target description file.
Definition: MCInstrDesc.h:198
llvm::MCRegister
Wrapper class representing physical registers. Should be passed by value.
Definition: MCRegister.h:33
llvm::MachineBasicBlock::getParent
const MachineFunction * getParent() const
Return the MachineFunction containing this basic block.
Definition: MachineBasicBlock.h:274
llvm::MachineBasicBlock::erase
instr_iterator erase(instr_iterator I)
Remove an instruction from the instruction list and delete it.
Definition: MachineBasicBlock.cpp:1400
llvm::MachineFunction::getRegInfo
MachineRegisterInfo & getRegInfo()
getRegInfo - Return information about the registers currently in use.
Definition: MachineFunction.h:718
llvm::MachineFunction::getFunction
Function & getFunction()
Return the LLVM function that this machine code represents.
Definition: MachineFunction.h:674
llvm::MachineFunction::getTarget
const LLVMTargetMachine & getTarget() const
getTarget - Return the target machine this machine code is compiled with
Definition: MachineFunction.h:704
llvm::MachineInstrBuilder::addImm
const MachineInstrBuilder & addImm(int64_t Val) const
Add a new immediate operand.
Definition: MachineInstrBuilder.h:132
llvm::MachineInstrBuilder::add
const MachineInstrBuilder & add(const MachineOperand &MO) const
Definition: MachineInstrBuilder.h:225
llvm::MachineInstrBuilder::addFrameIndex
const MachineInstrBuilder & addFrameIndex(int Idx) const
Definition: MachineInstrBuilder.h:153
llvm::MachineInstrBuilder::addReg
const MachineInstrBuilder & addReg(Register RegNo, unsigned flags=0, unsigned SubReg=0) const
Add a new virtual register operand.
Definition: MachineInstrBuilder.h:98
llvm::MachineInstrBuilder::addMemOperand
const MachineInstrBuilder & addMemOperand(MachineMemOperand *MMO) const
Definition: MachineInstrBuilder.h:203
llvm::MachineInstr
Representation of each machine instruction.
Definition: MachineInstr.h:68
llvm::MachineMemOperand
A description of a memory reference used in the backend.
Definition: MachineMemOperand.h:126
llvm::MachineMemOperand::MOLoad
@ MOLoad
The memory access reads data.
Definition: MachineMemOperand.h:133
llvm::MachineMemOperand::MOStore
@ MOStore
The memory access writes data.
Definition: MachineMemOperand.h:135
llvm::MachineOperand
MachineOperand class - Representation of each machine instruction operand.
Definition: MachineOperand.h:48
llvm::MachineOperand::getReg
Register getReg() const
getReg - Returns the register number.
Definition: MachineOperand.h:369
llvm::MachineRegisterInfo
MachineRegisterInfo - Keep track of information for virtual and physical registers,...
Definition: MachineRegisterInfo.h:51
llvm::MachineRegisterInfo::createVirtualRegister
Register createVirtualRegister(const TargetRegisterClass *RegClass, StringRef Name="")
createVirtualRegister - Create and return a new virtual register in the function with the specified r...
Definition: MachineRegisterInfo.cpp:157
llvm::MipsABIInfo::ArePtrs64bit
bool ArePtrs64bit() const
Definition: MipsABIInfo.h:73
llvm::MipsAnalyzeImmediate::Analyze
const InstSeq & Analyze(uint64_t Imm, unsigned Size, bool LastInstrIsADDiu)
Analyze - Get an instruction sequence to load immediate Imm.
Definition: MipsAnalyzeImmediate.cpp:129
llvm::MipsInstrInfo::Subtarget
const MipsSubtarget & Subtarget
Definition: MipsInstrInfo.h:45
llvm::MipsInstrInfo::GetMemOperand
MachineMemOperand * GetMemOperand(MachineBasicBlock &MBB, int FI, MachineMemOperand::Flags Flags) const
Definition: MipsInstrInfo.cpp:79
llvm::MipsInstrInfo::isZeroImm
bool isZeroImm(const MachineOperand &op) const
Definition: MipsInstrInfo.cpp:51
llvm::MipsSEInstrInfo::copyPhysReg
void copyPhysReg(MachineBasicBlock &MBB, MachineBasicBlock::iterator MI, const DebugLoc &DL, MCRegister DestReg, MCRegister SrcReg, bool KillSrc) const override
Definition: MipsSEInstrInfo.cpp:83
llvm::MipsSEInstrInfo::adjustStackPtr
void adjustStackPtr(unsigned SP, int64_t Amount, MachineBasicBlock &MBB, MachineBasicBlock::iterator I) const override
Adjust SP by Amount bytes.
Definition: MipsSEInstrInfo.cpp:559
llvm::MipsSEInstrInfo::isStoreToStackSlot
unsigned isStoreToStackSlot(const MachineInstr &MI, int &FrameIndex) const override
isStoreToStackSlot - If the specified machine instruction is a direct store to a stack slot,...
Definition: MipsSEInstrInfo.cpp:67
llvm::MipsSEInstrInfo::loadRegFromStack
void loadRegFromStack(MachineBasicBlock &MBB, MachineBasicBlock::iterator MI, Register DestReg, int FrameIndex, const TargetRegisterClass *RC, const TargetRegisterInfo *TRI, int64_t Offset) const override
Definition: MipsSEInstrInfo.cpp:289
llvm::MipsSEInstrInfo::isLoadFromStackSlot
unsigned isLoadFromStackSlot(const MachineInstr &MI, int &FrameIndex) const override
isLoadFromStackSlot - If the specified machine instruction is a direct load from a stack slot,...
Definition: MipsSEInstrInfo.cpp:45
llvm::MipsSEInstrInfo::isCopyInstrImpl
std::optional< DestSourcePair > isCopyInstrImpl(const MachineInstr &MI) const override
If the specific machine instruction is a instruction that moves/copies value from one register to ano...
Definition: MipsSEInstrInfo.cpp:207
llvm::MipsSEInstrInfo::loadImmediate
unsigned loadImmediate(int64_t Imm, MachineBasicBlock &MBB, MachineBasicBlock::iterator II, const DebugLoc &DL, unsigned *NewImm) const
Emit a series of instructions to load an immediate.
Definition: MipsSEInstrInfo.cpp:587
llvm::MipsSEInstrInfo::isBranchWithImm
bool isBranchWithImm(unsigned Opc) const override
isBranchWithImm - Return true if the branch contains an immediate operand (
Definition: MipsSEInstrInfo.cpp:458
llvm::MipsSEInstrInfo::MipsSEInstrInfo
MipsSEInstrInfo(const MipsSubtarget &STI)
Definition: MipsSEInstrInfo.cpp:33
llvm::MipsSEInstrInfo::storeRegToStack
void storeRegToStack(MachineBasicBlock &MBB, MachineBasicBlock::iterator MI, Register SrcReg, bool isKill, int FrameIndex, const TargetRegisterClass *RC, const TargetRegisterInfo *TRI, int64_t Offset) const override
Definition: MipsSEInstrInfo.cpp:215
llvm::MipsSEInstrInfo::expandPostRAPseudo
bool expandPostRAPseudo(MachineInstr &MI) const override
Definition: MipsSEInstrInfo.cpp:373
llvm::MipsSEInstrInfo::getRegisterInfo
const MipsRegisterInfo & getRegisterInfo() const override
getRegisterInfo - TargetInstrInfo is a superset of MRegister info.
Definition: MipsSEInstrInfo.cpp:36
llvm::MipsSEInstrInfo::getOppositeBranchOpc
unsigned getOppositeBranchOpc(unsigned Opc) const override
getOppositeBranchOpc - Return the inverse of the specified opcode, e.g.
Definition: MipsSEInstrInfo.cpp:472
llvm::MipsSubtarget::isFP64bit
bool isFP64bit() const
Definition: MipsSubtarget.h:287
llvm::MipsSubtarget::inMicroMipsMode
bool inMicroMipsMode() const
Definition: MipsSubtarget.h:314
llvm::MipsSubtarget::isABI_N64
bool isABI_N64() const
Definition: MipsSubtarget.cpp:280
llvm::MipsSubtarget::useOddSPReg
bool useOddSPReg() const
Definition: MipsSubtarget.h:288
llvm::MipsSubtarget::isABI_FPXX
bool isABI_FPXX() const
Definition: MipsSubtarget.h:237
llvm::MipsSubtarget::isPositionIndependent
bool isPositionIndependent() const
Definition: MipsSubtarget.cpp:224
llvm::MipsSubtarget::isGP64bit
bool isGP64bit() const
Definition: MipsSubtarget.h:292
llvm::MipsSubtarget::hasMips32r2
bool hasMips32r2() const
Definition: MipsSubtarget.h:259
llvm::MipsSubtarget::hasMTHC1
bool hasMTHC1() const
Definition: MipsSubtarget.h:348
llvm::MipsSubtarget::getABI
const MipsABIInfo & getABI() const
Definition: MipsSubtarget.cpp:283
llvm::Register
Wrapper class representing virtual and physical registers.
Definition: Register.h:19
llvm::SmallVectorBase::size
size_t size() const
Definition: SmallVector.h:91
llvm::TargetMachine
Primary interface to the complete machine description for the target machine.
Definition: TargetMachine.h:78
llvm::TargetRegisterInfo
TargetRegisterInfo base class - We assume that the target defines a static array of TargetRegisterDes...
Definition: TargetRegisterInfo.h:236
llvm_unreachable
#define llvm_unreachable(msg)
Marks that the current location is not supposed to be reachable.
Definition: ErrorHandling.h:143
llvm::RegState::Implicit
@ Implicit
Not emitted register (e.g. carry, or temporary result).
Definition: MachineInstrBuilder.h:47
llvm::RegState::Define
@ Define
Register definition.
Definition: MachineInstrBuilder.h:45
llvm::RegState::Kill
@ Kill
The last use of a register.
Definition: MachineInstrBuilder.h:49
llvm::RegState::Undef
@ Undef
Value of the register doesn't matter.
Definition: MachineInstrBuilder.h:53
llvm
This is an optimization pass for GlobalISel generic memory operations.
Definition: AddressRanges.h:18
llvm::Offset
@ Offset
Definition: DWP.cpp:440
llvm::BuildMI
MachineInstrBuilder BuildMI(MachineFunction &MF, const MIMetadata &MIMD, const MCInstrDesc &MCID)
Builder interface. Specify how to create the initial instruction itself.
Definition: MachineInstrBuilder.h:363
llvm::createMipsSEInstrInfo
const MipsInstrInfo * createMipsSEInstrInfo(const MipsSubtarget &STI)
Definition: MipsSEInstrInfo.cpp:883
llvm::get
decltype(auto) get(const PointerIntPair< PointerTy, IntBits, IntType, PtrTraits, Info > &Pair)
Definition: PointerIntPair.h:270
llvm::getKillRegState
unsigned getKillRegState(bool B)
Definition: MachineInstrBuilder.h:537
N
#define N
llvm::DWARFExpression::Operation::Description
Description of the encoding of one expression Op.
Definition: DWARFExpression.h:66
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