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HexagonAsmPrinter.cpp
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1 //===- HexagonAsmPrinter.cpp - Print machine instrs to Hexagon assembly ---===//
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 a printer that converts from our internal representation
10 // of machine-dependent LLVM code to Hexagon assembly language. This printer is
11 // the output mechanism used by `llc'.
12 //
13 //===----------------------------------------------------------------------===//
14 
15 #include "HexagonAsmPrinter.h"
16 #include "Hexagon.h"
17 #include "HexagonInstrInfo.h"
18 #include "HexagonRegisterInfo.h"
19 #include "HexagonSubtarget.h"
20 #include "MCTargetDesc/HexagonInstPrinter.h"
21 #include "MCTargetDesc/HexagonMCExpr.h"
22 #include "MCTargetDesc/HexagonMCInstrInfo.h"
23 #include "MCTargetDesc/HexagonMCTargetDesc.h"
24 #include "TargetInfo/HexagonTargetInfo.h"
25 #include "llvm/ADT/StringExtras.h"
26 #include "llvm/ADT/StringRef.h"
27 #include "llvm/ADT/Twine.h"
28 #include "llvm/BinaryFormat/ELF.h"
29 #include "llvm/CodeGen/AsmPrinter.h"
30 #include "llvm/CodeGen/MachineBasicBlock.h"
31 #include "llvm/CodeGen/MachineFunction.h"
32 #include "llvm/CodeGen/MachineInstr.h"
33 #include "llvm/CodeGen/MachineOperand.h"
34 #include "llvm/CodeGen/TargetRegisterInfo.h"
35 #include "llvm/CodeGen/TargetSubtargetInfo.h"
36 #include "llvm/MC/MCContext.h"
37 #include "llvm/MC/MCDirectives.h"
38 #include "llvm/MC/MCExpr.h"
39 #include "llvm/MC/MCInst.h"
40 #include "llvm/MC/MCRegisterInfo.h"
41 #include "llvm/MC/MCSectionELF.h"
42 #include "llvm/MC/MCStreamer.h"
43 #include "llvm/MC/MCSymbol.h"
44 #include "llvm/MC/TargetRegistry.h"
45 #include "llvm/Support/Casting.h"
46 #include "llvm/Support/CommandLine.h"
47 #include "llvm/Support/ErrorHandling.h"
48 #include "llvm/Support/raw_ostream.h"
49 #include <algorithm>
50 #include <cassert>
51 #include <cstdint>
52 #include <string>
53 
54 using namespace llvm;
55 
56 namespace llvm {
57 
58 void HexagonLowerToMC(const MCInstrInfo &MCII, const MachineInstr *MI,
59  MCInst &MCB, HexagonAsmPrinter &AP);
60 
61 } // end namespace llvm
62 
63 #define DEBUG_TYPE "asm-printer"
64 
65 // Given a scalar register return its pair.
66 inline static unsigned getHexagonRegisterPair(unsigned Reg,
67  const MCRegisterInfo *RI) {
68  assert(Hexagon::IntRegsRegClass.contains(Reg));
69  MCSuperRegIterator SR(Reg, RI, false);
70  unsigned Pair = *SR;
71  assert(Hexagon::DoubleRegsRegClass.contains(Pair));
72  return Pair;
73 }
74 
75 void HexagonAsmPrinter::printOperand(const MachineInstr *MI, unsigned OpNo,
76  raw_ostream &O) {
77  const MachineOperand &MO = MI->getOperand(OpNo);
78 
79  switch (MO.getType()) {
80  default:
81  llvm_unreachable ("<unknown operand type>");
82  case MachineOperand::MO_Register:
83  O << HexagonInstPrinter::getRegisterName(MO.getReg());
84  return;
85  case MachineOperand::MO_Immediate:
86  O << MO.getImm();
87  return;
88  case MachineOperand::MO_MachineBasicBlock:
89  MO.getMBB()->getSymbol()->print(O, MAI);
90  return;
91  case MachineOperand::MO_ConstantPoolIndex:
92  GetCPISymbol(MO.getIndex())->print(O, MAI);
93  return;
94  case MachineOperand::MO_GlobalAddress:
95  PrintSymbolOperand(MO, O);
96  return;
97  }
98 }
99 
100 // isBlockOnlyReachableByFallthrough - We need to override this since the
101 // default AsmPrinter does not print labels for any basic block that
102 // is only reachable by a fall through. That works for all cases except
103 // for the case in which the basic block is reachable by a fall through but
104 // through an indirect from a jump table. In this case, the jump table
105 // will contain a label not defined by AsmPrinter.
106 bool HexagonAsmPrinter::isBlockOnlyReachableByFallthrough(
107  const MachineBasicBlock *MBB) const {
108  if (MBB->hasAddressTaken())
109  return false;
110  return AsmPrinter::isBlockOnlyReachableByFallthrough(MBB);
111 }
112 
113 /// PrintAsmOperand - Print out an operand for an inline asm expression.
114 bool HexagonAsmPrinter::PrintAsmOperand(const MachineInstr *MI, unsigned OpNo,
115  const char *ExtraCode,
116  raw_ostream &OS) {
117  // Does this asm operand have a single letter operand modifier?
118  if (ExtraCode && ExtraCode[0]) {
119  if (ExtraCode[1] != 0)
120  return true; // Unknown modifier.
121 
122  switch (ExtraCode[0]) {
123  default:
124  // See if this is a generic print operand
125  return AsmPrinter::PrintAsmOperand(MI, OpNo, ExtraCode, OS);
126  case 'L':
127  case 'H': { // The highest-numbered register of a pair.
128  const MachineOperand &MO = MI->getOperand(OpNo);
129  const MachineFunction &MF = *MI->getParent()->getParent();
130  const TargetRegisterInfo *TRI = MF.getSubtarget().getRegisterInfo();
131  if (!MO.isReg())
132  return true;
133  Register RegNumber = MO.getReg();
134  // This should be an assert in the frontend.
135  if (Hexagon::DoubleRegsRegClass.contains(RegNumber))
136  RegNumber = TRI->getSubReg(RegNumber, ExtraCode[0] == 'L' ?
137  Hexagon::isub_lo :
138  Hexagon::isub_hi);
139  OS << HexagonInstPrinter::getRegisterName(RegNumber);
140  return false;
141  }
142  case 'I':
143  // Write 'i' if an integer constant, otherwise nothing. Used to print
144  // addi vs add, etc.
145  if (MI->getOperand(OpNo).isImm())
146  OS << "i";
147  return false;
148  }
149  }
150 
151  printOperand(MI, OpNo, OS);
152  return false;
153 }
154 
155 bool HexagonAsmPrinter::PrintAsmMemoryOperand(const MachineInstr *MI,
156  unsigned OpNo,
157  const char *ExtraCode,
158  raw_ostream &O) {
159  if (ExtraCode && ExtraCode[0])
160  return true; // Unknown modifier.
161 
162  const MachineOperand &Base = MI->getOperand(OpNo);
163  const MachineOperand &Offset = MI->getOperand(OpNo+1);
164 
165  if (Base.isReg())
166  printOperand(MI, OpNo, O);
167  else
168  llvm_unreachable("Unimplemented");
169 
170  if (Offset.isImm()) {
171  if (Offset.getImm())
172  O << "+#" << Offset.getImm();
173  } else {
174  llvm_unreachable("Unimplemented");
175  }
176 
177  return false;
178 }
179 
180 static MCSymbol *smallData(AsmPrinter &AP, const MachineInstr &MI,
181  MCStreamer &OutStreamer, const MCOperand &Imm,
182  int AlignSize, const MCSubtargetInfo& STI) {
183  MCSymbol *Sym;
184  int64_t Value;
185  if (Imm.getExpr()->evaluateAsAbsolute(Value)) {
186  StringRef sectionPrefix;
187  std::string ImmString;
188  StringRef Name;
189  if (AlignSize == 8) {
190  Name = ".CONST_0000000000000000";
191  sectionPrefix = ".gnu.linkonce.l8";
192  ImmString = utohexstr(Value);
193  } else {
194  Name = ".CONST_00000000";
195  sectionPrefix = ".gnu.linkonce.l4";
196  ImmString = utohexstr(static_cast<uint32_t>(Value));
197  }
198 
199  std::string symbolName = // Yes, leading zeros are kept.
200  Name.drop_back(ImmString.size()).str() + ImmString;
201  std::string sectionName = sectionPrefix.str() + symbolName;
202 
203  MCSectionELF *Section = OutStreamer.getContext().getELFSection(
204  sectionName, ELF::SHT_PROGBITS, ELF::SHF_WRITE | ELF::SHF_ALLOC);
205  OutStreamer.SwitchSection(Section);
206 
207  Sym = AP.OutContext.getOrCreateSymbol(Twine(symbolName));
208  if (Sym->isUndefined()) {
209  OutStreamer.emitLabel(Sym);
210  OutStreamer.emitSymbolAttribute(Sym, MCSA_Global);
211  OutStreamer.emitIntValue(Value, AlignSize);
212  OutStreamer.emitCodeAlignment(AlignSize, &STI);
213  }
214  } else {
215  assert(Imm.isExpr() && "Expected expression and found none");
216  const MachineOperand &MO = MI.getOperand(1);
217  assert(MO.isGlobal() || MO.isCPI() || MO.isJTI());
218  MCSymbol *MOSymbol = nullptr;
219  if (MO.isGlobal())
220  MOSymbol = AP.getSymbol(MO.getGlobal());
221  else if (MO.isCPI())
222  MOSymbol = AP.GetCPISymbol(MO.getIndex());
223  else if (MO.isJTI())
224  MOSymbol = AP.GetJTISymbol(MO.getIndex());
225  else
226  llvm_unreachable("Unknown operand type!");
227 
228  StringRef SymbolName = MOSymbol->getName();
229  std::string LitaName = ".CONST_" + SymbolName.str();
230 
231  MCSectionELF *Section = OutStreamer.getContext().getELFSection(
232  ".lita", ELF::SHT_PROGBITS, ELF::SHF_WRITE | ELF::SHF_ALLOC);
233 
234  OutStreamer.SwitchSection(Section);
235  Sym = AP.OutContext.getOrCreateSymbol(Twine(LitaName));
236  if (Sym->isUndefined()) {
237  OutStreamer.emitLabel(Sym);
238  OutStreamer.emitSymbolAttribute(Sym, MCSA_Local);
239  OutStreamer.emitValue(Imm.getExpr(), AlignSize);
240  OutStreamer.emitCodeAlignment(AlignSize, &STI);
241  }
242  }
243  return Sym;
244 }
245 
246 static MCInst ScaleVectorOffset(MCInst &Inst, unsigned OpNo,
247  unsigned VectorSize, MCContext &Ctx) {
248  MCInst T;
249  T.setOpcode(Inst.getOpcode());
250  for (unsigned i = 0, n = Inst.getNumOperands(); i != n; ++i) {
251  if (i != OpNo) {
252  T.addOperand(Inst.getOperand(i));
253  continue;
254  }
255  MCOperand &ImmOp = Inst.getOperand(i);
256  const auto *HE = static_cast<const HexagonMCExpr*>(ImmOp.getExpr());
257  int32_t V = cast<MCConstantExpr>(HE->getExpr())->getValue();
258  auto *NewCE = MCConstantExpr::create(V / int32_t(VectorSize), Ctx);
259  auto *NewHE = HexagonMCExpr::create(NewCE, Ctx);
260  T.addOperand(MCOperand::createExpr(NewHE));
261  }
262  return T;
263 }
264 
265 void HexagonAsmPrinter::HexagonProcessInstruction(MCInst &Inst,
266  const MachineInstr &MI) {
267  MCInst &MappedInst = static_cast <MCInst &>(Inst);
268  const MCRegisterInfo *RI = OutStreamer->getContext().getRegisterInfo();
269  const MachineFunction &MF = *MI.getParent()->getParent();
270  auto &HRI = *MF.getSubtarget<HexagonSubtarget>().getRegisterInfo();
271  unsigned VectorSize = HRI.getRegSizeInBits(Hexagon::HvxVRRegClass) / 8;
272 
273  switch (Inst.getOpcode()) {
274  default:
275  return;
276 
277  case Hexagon::A2_iconst: {
278  Inst.setOpcode(Hexagon::A2_addi);
279  MCOperand Reg = Inst.getOperand(0);
280  MCOperand S16 = Inst.getOperand(1);
281  HexagonMCInstrInfo::setMustNotExtend(*S16.getExpr());
282  HexagonMCInstrInfo::setS27_2_reloc(*S16.getExpr());
283  Inst.clear();
284  Inst.addOperand(Reg);
285  Inst.addOperand(MCOperand::createReg(Hexagon::R0));
286  Inst.addOperand(S16);
287  break;
288  }
289 
290  case Hexagon::A2_tfrf: {
291  const MCConstantExpr *Zero = MCConstantExpr::create(0, OutContext);
292  Inst.setOpcode(Hexagon::A2_paddif);
293  Inst.addOperand(MCOperand::createExpr(Zero));
294  break;
295  }
296 
297  case Hexagon::A2_tfrt: {
298  const MCConstantExpr *Zero = MCConstantExpr::create(0, OutContext);
299  Inst.setOpcode(Hexagon::A2_paddit);
300  Inst.addOperand(MCOperand::createExpr(Zero));
301  break;
302  }
303 
304  case Hexagon::A2_tfrfnew: {
305  const MCConstantExpr *Zero = MCConstantExpr::create(0, OutContext);
306  Inst.setOpcode(Hexagon::A2_paddifnew);
307  Inst.addOperand(MCOperand::createExpr(Zero));
308  break;
309  }
310 
311  case Hexagon::A2_tfrtnew: {
312  const MCConstantExpr *Zero = MCConstantExpr::create(0, OutContext);
313  Inst.setOpcode(Hexagon::A2_padditnew);
314  Inst.addOperand(MCOperand::createExpr(Zero));
315  break;
316  }
317 
318  case Hexagon::A2_zxtb: {
319  const MCConstantExpr *C255 = MCConstantExpr::create(255, OutContext);
320  Inst.setOpcode(Hexagon::A2_andir);
321  Inst.addOperand(MCOperand::createExpr(C255));
322  break;
323  }
324 
325  // "$dst = CONST64(#$src1)",
326  case Hexagon::CONST64:
327  if (!OutStreamer->hasRawTextSupport()) {
328  const MCOperand &Imm = MappedInst.getOperand(1);
329  MCSectionSubPair Current = OutStreamer->getCurrentSection();
330 
331  MCSymbol *Sym =
332  smallData(*this, MI, *OutStreamer, Imm, 8, getSubtargetInfo());
333 
334  OutStreamer->SwitchSection(Current.first, Current.second);
335  MCInst TmpInst;
336  MCOperand &Reg = MappedInst.getOperand(0);
337  TmpInst.setOpcode(Hexagon::L2_loadrdgp);
338  TmpInst.addOperand(Reg);
339  TmpInst.addOperand(MCOperand::createExpr(
340  MCSymbolRefExpr::create(Sym, OutContext)));
341  MappedInst = TmpInst;
342 
343  }
344  break;
345  case Hexagon::CONST32:
346  if (!OutStreamer->hasRawTextSupport()) {
347  MCOperand &Imm = MappedInst.getOperand(1);
348  MCSectionSubPair Current = OutStreamer->getCurrentSection();
349  MCSymbol *Sym =
350  smallData(*this, MI, *OutStreamer, Imm, 4, getSubtargetInfo());
351  OutStreamer->SwitchSection(Current.first, Current.second);
352  MCInst TmpInst;
353  MCOperand &Reg = MappedInst.getOperand(0);
354  TmpInst.setOpcode(Hexagon::L2_loadrigp);
355  TmpInst.addOperand(Reg);
356  TmpInst.addOperand(MCOperand::createExpr(HexagonMCExpr::create(
357  MCSymbolRefExpr::create(Sym, OutContext), OutContext)));
358  MappedInst = TmpInst;
359  }
360  break;
361 
362  // C2_pxfer_map maps to C2_or instruction. Though, it's possible to use
363  // C2_or during instruction selection itself but it results
364  // into suboptimal code.
365  case Hexagon::C2_pxfer_map: {
366  MCOperand &Ps = Inst.getOperand(1);
367  MappedInst.setOpcode(Hexagon::C2_or);
368  MappedInst.addOperand(Ps);
369  return;
370  }
371 
372  // Vector reduce complex multiply by scalar, Rt & 1 map to :hi else :lo
373  // The insn is mapped from the 4 operand to the 3 operand raw form taking
374  // 3 register pairs.
375  case Hexagon::M2_vrcmpys_acc_s1: {
376  MCOperand &Rt = Inst.getOperand(3);
377  assert(Rt.isReg() && "Expected register and none was found");
378  unsigned Reg = RI->getEncodingValue(Rt.getReg());
379  if (Reg & 1)
380  MappedInst.setOpcode(Hexagon::M2_vrcmpys_acc_s1_h);
381  else
382  MappedInst.setOpcode(Hexagon::M2_vrcmpys_acc_s1_l);
383  Rt.setReg(getHexagonRegisterPair(Rt.getReg(), RI));
384  return;
385  }
386  case Hexagon::M2_vrcmpys_s1: {
387  MCOperand &Rt = Inst.getOperand(2);
388  assert(Rt.isReg() && "Expected register and none was found");
389  unsigned Reg = RI->getEncodingValue(Rt.getReg());
390  if (Reg & 1)
391  MappedInst.setOpcode(Hexagon::M2_vrcmpys_s1_h);
392  else
393  MappedInst.setOpcode(Hexagon::M2_vrcmpys_s1_l);
394  Rt.setReg(getHexagonRegisterPair(Rt.getReg(), RI));
395  return;
396  }
397 
398  case Hexagon::M2_vrcmpys_s1rp: {
399  MCOperand &Rt = Inst.getOperand(2);
400  assert(Rt.isReg() && "Expected register and none was found");
401  unsigned Reg = RI->getEncodingValue(Rt.getReg());
402  if (Reg & 1)
403  MappedInst.setOpcode(Hexagon::M2_vrcmpys_s1rp_h);
404  else
405  MappedInst.setOpcode(Hexagon::M2_vrcmpys_s1rp_l);
406  Rt.setReg(getHexagonRegisterPair(Rt.getReg(), RI));
407  return;
408  }
409 
410  case Hexagon::A4_boundscheck: {
411  MCOperand &Rs = Inst.getOperand(1);
412  assert(Rs.isReg() && "Expected register and none was found");
413  unsigned Reg = RI->getEncodingValue(Rs.getReg());
414  if (Reg & 1) // Odd mapped to raw:hi, regpair is rodd:odd-1, like r3:2
415  MappedInst.setOpcode(Hexagon::A4_boundscheck_hi);
416  else // raw:lo
417  MappedInst.setOpcode(Hexagon::A4_boundscheck_lo);
418  Rs.setReg(getHexagonRegisterPair(Rs.getReg(), RI));
419  return;
420  }
421 
422  case Hexagon::PS_call_nr:
423  Inst.setOpcode(Hexagon::J2_call);
424  break;
425 
426  case Hexagon::S5_asrhub_rnd_sat_goodsyntax: {
427  MCOperand &MO = MappedInst.getOperand(2);
428  int64_t Imm;
429  MCExpr const *Expr = MO.getExpr();
430  bool Success = Expr->evaluateAsAbsolute(Imm);
431  assert(Success && "Expected immediate and none was found");
432  (void)Success;
433  MCInst TmpInst;
434  if (Imm == 0) {
435  TmpInst.setOpcode(Hexagon::S2_vsathub);
436  TmpInst.addOperand(MappedInst.getOperand(0));
437  TmpInst.addOperand(MappedInst.getOperand(1));
438  MappedInst = TmpInst;
439  return;
440  }
441  TmpInst.setOpcode(Hexagon::S5_asrhub_rnd_sat);
442  TmpInst.addOperand(MappedInst.getOperand(0));
443  TmpInst.addOperand(MappedInst.getOperand(1));
444  const MCExpr *One = MCConstantExpr::create(1, OutContext);
445  const MCExpr *Sub = MCBinaryExpr::createSub(Expr, One, OutContext);
446  TmpInst.addOperand(
447  MCOperand::createExpr(HexagonMCExpr::create(Sub, OutContext)));
448  MappedInst = TmpInst;
449  return;
450  }
451 
452  case Hexagon::S5_vasrhrnd_goodsyntax:
453  case Hexagon::S2_asr_i_p_rnd_goodsyntax: {
454  MCOperand &MO2 = MappedInst.getOperand(2);
455  MCExpr const *Expr = MO2.getExpr();
456  int64_t Imm;
457  bool Success = Expr->evaluateAsAbsolute(Imm);
458  assert(Success && "Expected immediate and none was found");
459  (void)Success;
460  MCInst TmpInst;
461  if (Imm == 0) {
462  TmpInst.setOpcode(Hexagon::A2_combinew);
463  TmpInst.addOperand(MappedInst.getOperand(0));
464  MCOperand &MO1 = MappedInst.getOperand(1);
465  unsigned High = RI->getSubReg(MO1.getReg(), Hexagon::isub_hi);
466  unsigned Low = RI->getSubReg(MO1.getReg(), Hexagon::isub_lo);
467  // Add a new operand for the second register in the pair.
468  TmpInst.addOperand(MCOperand::createReg(High));
469  TmpInst.addOperand(MCOperand::createReg(Low));
470  MappedInst = TmpInst;
471  return;
472  }
473 
474  if (Inst.getOpcode() == Hexagon::S2_asr_i_p_rnd_goodsyntax)
475  TmpInst.setOpcode(Hexagon::S2_asr_i_p_rnd);
476  else
477  TmpInst.setOpcode(Hexagon::S5_vasrhrnd);
478  TmpInst.addOperand(MappedInst.getOperand(0));
479  TmpInst.addOperand(MappedInst.getOperand(1));
480  const MCExpr *One = MCConstantExpr::create(1, OutContext);
481  const MCExpr *Sub = MCBinaryExpr::createSub(Expr, One, OutContext);
482  TmpInst.addOperand(
483  MCOperand::createExpr(HexagonMCExpr::create(Sub, OutContext)));
484  MappedInst = TmpInst;
485  return;
486  }
487 
488  // if ("#u5==0") Assembler mapped to: "Rd=Rs"; else Rd=asr(Rs,#u5-1):rnd
489  case Hexagon::S2_asr_i_r_rnd_goodsyntax: {
490  MCOperand &MO = Inst.getOperand(2);
491  MCExpr const *Expr = MO.getExpr();
492  int64_t Imm;
493  bool Success = Expr->evaluateAsAbsolute(Imm);
494  assert(Success && "Expected immediate and none was found");
495  (void)Success;
496  MCInst TmpInst;
497  if (Imm == 0) {
498  TmpInst.setOpcode(Hexagon::A2_tfr);
499  TmpInst.addOperand(MappedInst.getOperand(0));
500  TmpInst.addOperand(MappedInst.getOperand(1));
501  MappedInst = TmpInst;
502  return;
503  }
504  TmpInst.setOpcode(Hexagon::S2_asr_i_r_rnd);
505  TmpInst.addOperand(MappedInst.getOperand(0));
506  TmpInst.addOperand(MappedInst.getOperand(1));
507  const MCExpr *One = MCConstantExpr::create(1, OutContext);
508  const MCExpr *Sub = MCBinaryExpr::createSub(Expr, One, OutContext);
509  TmpInst.addOperand(
510  MCOperand::createExpr(HexagonMCExpr::create(Sub, OutContext)));
511  MappedInst = TmpInst;
512  return;
513  }
514 
515  // Translate a "$Rdd = #imm" to "$Rdd = combine(#[-1,0], #imm)"
516  case Hexagon::A2_tfrpi: {
517  MCInst TmpInst;
518  MCOperand &Rdd = MappedInst.getOperand(0);
519  MCOperand &MO = MappedInst.getOperand(1);
520 
521  TmpInst.setOpcode(Hexagon::A2_combineii);
522  TmpInst.addOperand(Rdd);
523  int64_t Imm;
524  bool Success = MO.getExpr()->evaluateAsAbsolute(Imm);
525  if (Success && Imm < 0) {
526  const MCExpr *MOne = MCConstantExpr::create(-1, OutContext);
527  const HexagonMCExpr *E = HexagonMCExpr::create(MOne, OutContext);
528  TmpInst.addOperand(MCOperand::createExpr(E));
529  } else {
530  const MCExpr *Zero = MCConstantExpr::create(0, OutContext);
531  const HexagonMCExpr *E = HexagonMCExpr::create(Zero, OutContext);
532  TmpInst.addOperand(MCOperand::createExpr(E));
533  }
534  TmpInst.addOperand(MO);
535  MappedInst = TmpInst;
536  return;
537  }
538 
539  // Translate a "$Rdd = $Rss" to "$Rdd = combine($Rs, $Rt)"
540  case Hexagon::A2_tfrp: {
541  MCOperand &MO = MappedInst.getOperand(1);
542  unsigned High = RI->getSubReg(MO.getReg(), Hexagon::isub_hi);
543  unsigned Low = RI->getSubReg(MO.getReg(), Hexagon::isub_lo);
544  MO.setReg(High);
545  // Add a new operand for the second register in the pair.
546  MappedInst.addOperand(MCOperand::createReg(Low));
547  MappedInst.setOpcode(Hexagon::A2_combinew);
548  return;
549  }
550 
551  case Hexagon::A2_tfrpt:
552  case Hexagon::A2_tfrpf: {
553  MCOperand &MO = MappedInst.getOperand(2);
554  unsigned High = RI->getSubReg(MO.getReg(), Hexagon::isub_hi);
555  unsigned Low = RI->getSubReg(MO.getReg(), Hexagon::isub_lo);
556  MO.setReg(High);
557  // Add a new operand for the second register in the pair.
558  MappedInst.addOperand(MCOperand::createReg(Low));
559  MappedInst.setOpcode((Inst.getOpcode() == Hexagon::A2_tfrpt)
560  ? Hexagon::C2_ccombinewt
561  : Hexagon::C2_ccombinewf);
562  return;
563  }
564 
565  case Hexagon::A2_tfrptnew:
566  case Hexagon::A2_tfrpfnew: {
567  MCOperand &MO = MappedInst.getOperand(2);
568  unsigned High = RI->getSubReg(MO.getReg(), Hexagon::isub_hi);
569  unsigned Low = RI->getSubReg(MO.getReg(), Hexagon::isub_lo);
570  MO.setReg(High);
571  // Add a new operand for the second register in the pair.
572  MappedInst.addOperand(MCOperand::createReg(Low));
573  MappedInst.setOpcode(Inst.getOpcode() == Hexagon::A2_tfrptnew
574  ? Hexagon::C2_ccombinewnewt
575  : Hexagon::C2_ccombinewnewf);
576  return;
577  }
578 
579  case Hexagon::M2_mpysmi: {
580  MCOperand &Imm = MappedInst.getOperand(2);
581  MCExpr const *Expr = Imm.getExpr();
582  int64_t Value;
583  bool Success = Expr->evaluateAsAbsolute(Value);
584  assert(Success);
585  (void)Success;
586  if (Value < 0 && Value > -256) {
587  MappedInst.setOpcode(Hexagon::M2_mpysin);
588  Imm.setExpr(HexagonMCExpr::create(
589  MCUnaryExpr::createMinus(Expr, OutContext), OutContext));
590  } else
591  MappedInst.setOpcode(Hexagon::M2_mpysip);
592  return;
593  }
594 
595  case Hexagon::A2_addsp: {
596  MCOperand &Rt = Inst.getOperand(1);
597  assert(Rt.isReg() && "Expected register and none was found");
598  unsigned Reg = RI->getEncodingValue(Rt.getReg());
599  if (Reg & 1)
600  MappedInst.setOpcode(Hexagon::A2_addsph);
601  else
602  MappedInst.setOpcode(Hexagon::A2_addspl);
603  Rt.setReg(getHexagonRegisterPair(Rt.getReg(), RI));
604  return;
605  }
606 
607  case Hexagon::V6_vd0: {
608  MCInst TmpInst;
609  assert(Inst.getOperand(0).isReg() &&
610  "Expected register and none was found");
611 
612  TmpInst.setOpcode(Hexagon::V6_vxor);
613  TmpInst.addOperand(Inst.getOperand(0));
614  TmpInst.addOperand(Inst.getOperand(0));
615  TmpInst.addOperand(Inst.getOperand(0));
616  MappedInst = TmpInst;
617  return;
618  }
619 
620  case Hexagon::V6_vdd0: {
621  MCInst TmpInst;
622  assert (Inst.getOperand(0).isReg() &&
623  "Expected register and none was found");
624 
625  TmpInst.setOpcode(Hexagon::V6_vsubw_dv);
626  TmpInst.addOperand(Inst.getOperand(0));
627  TmpInst.addOperand(Inst.getOperand(0));
628  TmpInst.addOperand(Inst.getOperand(0));
629  MappedInst = TmpInst;
630  return;
631  }
632 
633  case Hexagon::V6_vL32Ub_pi:
634  case Hexagon::V6_vL32b_cur_pi:
635  case Hexagon::V6_vL32b_nt_cur_pi:
636  case Hexagon::V6_vL32b_pi:
637  case Hexagon::V6_vL32b_nt_pi:
638  case Hexagon::V6_vL32b_nt_tmp_pi:
639  case Hexagon::V6_vL32b_tmp_pi:
640  MappedInst = ScaleVectorOffset(Inst, 3, VectorSize, OutContext);
641  return;
642 
643  case Hexagon::V6_vL32Ub_ai:
644  case Hexagon::V6_vL32b_ai:
645  case Hexagon::V6_vL32b_cur_ai:
646  case Hexagon::V6_vL32b_nt_ai:
647  case Hexagon::V6_vL32b_nt_cur_ai:
648  case Hexagon::V6_vL32b_nt_tmp_ai:
649  case Hexagon::V6_vL32b_tmp_ai:
650  MappedInst = ScaleVectorOffset(Inst, 2, VectorSize, OutContext);
651  return;
652 
653  case Hexagon::V6_vS32Ub_pi:
654  case Hexagon::V6_vS32b_new_pi:
655  case Hexagon::V6_vS32b_nt_new_pi:
656  case Hexagon::V6_vS32b_nt_pi:
657  case Hexagon::V6_vS32b_pi:
658  MappedInst = ScaleVectorOffset(Inst, 2, VectorSize, OutContext);
659  return;
660 
661  case Hexagon::V6_vS32Ub_ai:
662  case Hexagon::V6_vS32b_ai:
663  case Hexagon::V6_vS32b_new_ai:
664  case Hexagon::V6_vS32b_nt_ai:
665  case Hexagon::V6_vS32b_nt_new_ai:
666  MappedInst = ScaleVectorOffset(Inst, 1, VectorSize, OutContext);
667  return;
668 
669  case Hexagon::V6_vL32b_cur_npred_pi:
670  case Hexagon::V6_vL32b_cur_pred_pi:
671  case Hexagon::V6_vL32b_npred_pi:
672  case Hexagon::V6_vL32b_nt_cur_npred_pi:
673  case Hexagon::V6_vL32b_nt_cur_pred_pi:
674  case Hexagon::V6_vL32b_nt_npred_pi:
675  case Hexagon::V6_vL32b_nt_pred_pi:
676  case Hexagon::V6_vL32b_nt_tmp_npred_pi:
677  case Hexagon::V6_vL32b_nt_tmp_pred_pi:
678  case Hexagon::V6_vL32b_pred_pi:
679  case Hexagon::V6_vL32b_tmp_npred_pi:
680  case Hexagon::V6_vL32b_tmp_pred_pi:
681  MappedInst = ScaleVectorOffset(Inst, 4, VectorSize, OutContext);
682  return;
683 
684  case Hexagon::V6_vL32b_cur_npred_ai:
685  case Hexagon::V6_vL32b_cur_pred_ai:
686  case Hexagon::V6_vL32b_npred_ai:
687  case Hexagon::V6_vL32b_nt_cur_npred_ai:
688  case Hexagon::V6_vL32b_nt_cur_pred_ai:
689  case Hexagon::V6_vL32b_nt_npred_ai:
690  case Hexagon::V6_vL32b_nt_pred_ai:
691  case Hexagon::V6_vL32b_nt_tmp_npred_ai:
692  case Hexagon::V6_vL32b_nt_tmp_pred_ai:
693  case Hexagon::V6_vL32b_pred_ai:
694  case Hexagon::V6_vL32b_tmp_npred_ai:
695  case Hexagon::V6_vL32b_tmp_pred_ai:
696  MappedInst = ScaleVectorOffset(Inst, 3, VectorSize, OutContext);
697  return;
698 
699  case Hexagon::V6_vS32Ub_npred_pi:
700  case Hexagon::V6_vS32Ub_pred_pi:
701  case Hexagon::V6_vS32b_new_npred_pi:
702  case Hexagon::V6_vS32b_new_pred_pi:
703  case Hexagon::V6_vS32b_npred_pi:
704  case Hexagon::V6_vS32b_nqpred_pi:
705  case Hexagon::V6_vS32b_nt_new_npred_pi:
706  case Hexagon::V6_vS32b_nt_new_pred_pi:
707  case Hexagon::V6_vS32b_nt_npred_pi:
708  case Hexagon::V6_vS32b_nt_nqpred_pi:
709  case Hexagon::V6_vS32b_nt_pred_pi:
710  case Hexagon::V6_vS32b_nt_qpred_pi:
711  case Hexagon::V6_vS32b_pred_pi:
712  case Hexagon::V6_vS32b_qpred_pi:
713  MappedInst = ScaleVectorOffset(Inst, 3, VectorSize, OutContext);
714  return;
715 
716  case Hexagon::V6_vS32Ub_npred_ai:
717  case Hexagon::V6_vS32Ub_pred_ai:
718  case Hexagon::V6_vS32b_new_npred_ai:
719  case Hexagon::V6_vS32b_new_pred_ai:
720  case Hexagon::V6_vS32b_npred_ai:
721  case Hexagon::V6_vS32b_nqpred_ai:
722  case Hexagon::V6_vS32b_nt_new_npred_ai:
723  case Hexagon::V6_vS32b_nt_new_pred_ai:
724  case Hexagon::V6_vS32b_nt_npred_ai:
725  case Hexagon::V6_vS32b_nt_nqpred_ai:
726  case Hexagon::V6_vS32b_nt_pred_ai:
727  case Hexagon::V6_vS32b_nt_qpred_ai:
728  case Hexagon::V6_vS32b_pred_ai:
729  case Hexagon::V6_vS32b_qpred_ai:
730  MappedInst = ScaleVectorOffset(Inst, 2, VectorSize, OutContext);
731  return;
732 
733  // V65+
734  case Hexagon::V6_vS32b_srls_ai:
735  MappedInst = ScaleVectorOffset(Inst, 1, VectorSize, OutContext);
736  return;
737 
738  case Hexagon::V6_vS32b_srls_pi:
739  MappedInst = ScaleVectorOffset(Inst, 2, VectorSize, OutContext);
740  return;
741  }
742 }
743 
744 /// Print out a single Hexagon MI to the current output stream.
745 void HexagonAsmPrinter::emitInstruction(const MachineInstr *MI) {
746  MCInst MCB;
747  MCB.setOpcode(Hexagon::BUNDLE);
748  MCB.addOperand(MCOperand::createImm(0));
749  const MCInstrInfo &MCII = *Subtarget->getInstrInfo();
750 
751  if (MI->isBundle()) {
752  const MachineBasicBlock* MBB = MI->getParent();
753  MachineBasicBlock::const_instr_iterator MII = MI->getIterator();
754 
755  for (++MII; MII != MBB->instr_end() && MII->isInsideBundle(); ++MII)
756  if (!MII->isDebugInstr() && !MII->isImplicitDef())
757  HexagonLowerToMC(MCII, &*MII, MCB, *this);
758  } else {
759  HexagonLowerToMC(MCII, MI, MCB, *this);
760  }
761 
762  const MachineFunction &MF = *MI->getParent()->getParent();
763  const auto &HII = *MF.getSubtarget<HexagonSubtarget>().getInstrInfo();
764  if (MI->isBundle() && HII.getBundleNoShuf(*MI))
765  HexagonMCInstrInfo::setMemReorderDisabled(MCB);
766 
767  MCContext &Ctx = OutStreamer->getContext();
768  bool Ok = HexagonMCInstrInfo::canonicalizePacket(MCII, *Subtarget, Ctx,
769  MCB, nullptr);
770  assert(Ok); (void)Ok;
771  if (HexagonMCInstrInfo::bundleSize(MCB) == 0)
772  return;
773  OutStreamer->emitInstruction(MCB, getSubtargetInfo());
774 }
775 
776 void HexagonAsmPrinter::EmitSled(const MachineInstr &MI, SledKind Kind) {
777  static const int8_t NoopsInSledCount = 4;
778  // We want to emit the following pattern:
779  //
780  // .L_xray_sled_N:
781  // <xray_sled_base>:
782  // { jump .Ltmp0 }
783  // { nop
784  // nop
785  // nop
786  // nop }
787  // .Ltmp0:
788  //
789  // We need the 4 nop words because at runtime, we'd be patching over the
790  // full 5 words with the following pattern:
791  //
792  // <xray_sled_n>:
793  // { immext(#...) // upper 26-bits of trampoline
794  // r6 = ##... // lower 6-bits of trampoline
795  // immext(#...) // upper 26-bits of func id
796  // r7 = ##... } // lower 6 bits of func id
797  // { callr r6 }
798  //
799  //
800  auto CurSled = OutContext.createTempSymbol("xray_sled_", true);
801  OutStreamer->emitLabel(CurSled);
802 
803  MCInst *SledJump = new (OutContext) MCInst();
804  SledJump->setOpcode(Hexagon::J2_jump);
805  auto PostSled = OutContext.createTempSymbol();
806  SledJump->addOperand(MCOperand::createExpr(HexagonMCExpr::create(
807  MCSymbolRefExpr::create(PostSled, OutContext), OutContext)));
808 
809  // Emit "jump PostSled" instruction, which jumps over the nop series.
810  MCInst SledJumpPacket;
811  SledJumpPacket.setOpcode(Hexagon::BUNDLE);
812  SledJumpPacket.addOperand(MCOperand::createImm(0));
813  SledJumpPacket.addOperand(MCOperand::createInst(SledJump));
814 
815  EmitToStreamer(*OutStreamer, SledJumpPacket);
816 
817  // FIXME: this will emit individual packets, we should
818  // special-case this and combine them into a single packet.
819  emitNops(NoopsInSledCount);
820 
821  OutStreamer->emitLabel(PostSled);
822  recordSled(CurSled, MI, Kind, 0);
823 }
824 
825 void HexagonAsmPrinter::LowerPATCHABLE_FUNCTION_ENTER(const MachineInstr &MI) {
826  EmitSled(MI, SledKind::FUNCTION_ENTER);
827 }
828 
829 void HexagonAsmPrinter::LowerPATCHABLE_FUNCTION_EXIT(const MachineInstr &MI) {
830  EmitSled(MI, SledKind::FUNCTION_EXIT);
831 }
832 
833 void HexagonAsmPrinter::LowerPATCHABLE_TAIL_CALL(const MachineInstr &MI) {
834  EmitSled(MI, SledKind::TAIL_CALL);
835 }
836 
837 extern "C" LLVM_EXTERNAL_VISIBILITY void LLVMInitializeHexagonAsmPrinter() {
838  RegisterAsmPrinter<HexagonAsmPrinter> X(getTheHexagonTarget());
839 }
HexagonTargetInfo.h
i
i
Definition: README.txt:29
HexagonMCTargetDesc.h
AsmPrinter.h
HexagonInstPrinter.h
MI
IRTranslator LLVM IR MI
Definition: IRTranslator.cpp:104
MachineInstr.h
llvm::MachineOperand::MO_Immediate
@ MO_Immediate
Immediate operand.
Definition: MachineOperand.h:52
llvm
This is an optimization pass for GlobalISel generic memory operations.
Definition: AddressRanges.h:17
llvm::MCSymbol
MCSymbol - Instances of this class represent a symbol name in the MC file, and MCSymbols are created ...
Definition: MCSymbol.h:41
llvm::HexagonMCInstrInfo::setMustNotExtend
void setMustNotExtend(MCExpr const &Expr, bool Val=true)
Definition: HexagonMCInstrInfo.cpp:889
llvm::ELF::SHF_WRITE
@ SHF_WRITE
Definition: ELF.h:1032
llvm::MCOperand::createExpr
static MCOperand createExpr(const MCExpr *Val)
Definition: MCInst.h:162
llvm::HexagonAsmPrinter::printOperand
void printOperand(const MachineInstr *MI, unsigned OpNo, raw_ostream &O)
Definition: HexagonAsmPrinter.cpp:75
llvm::AsmPrinter::recordSled
void recordSled(MCSymbol *Sled, const MachineInstr &MI, SledKind Kind, uint8_t Version=0)
Definition: AsmPrinter.cpp:3758
llvm::MCOperand::isReg
bool isReg() const
Definition: MCInst.h:61
llvm::MachineOperand::getGlobal
const GlobalValue * getGlobal() const
Definition: MachineOperand.h:572
T
llvm::MCOperand::createImm
static MCOperand createImm(int64_t Val)
Definition: MCInst.h:141
llvm::MCContext
Context object for machine code objects.
Definition: MCContext.h:74
StringRef.h
smallData
static MCSymbol * smallData(AsmPrinter &AP, const MachineInstr &MI, MCStreamer &OutStreamer, const MCOperand &Imm, int AlignSize, const MCSubtargetInfo &STI)
Definition: HexagonAsmPrinter.cpp:180
MCDirectives.h
llvm::AsmPrinter::MAI
const MCAsmInfo * MAI
Target Asm Printer information.
Definition: AsmPrinter.h:87
llvm::MCConstantExpr::create
static const MCConstantExpr * create(int64_t Value, MCContext &Ctx, bool PrintInHex=false, unsigned SizeInBytes=0)
Definition: MCExpr.cpp:194
contains
return AArch64::GPR64RegClass contains(Reg)
High
uint64_t High
Definition: NVVMIntrRange.cpp:61
MCSectionELF.h
llvm::MCUnaryExpr::createMinus
static const MCUnaryExpr * createMinus(const MCExpr *Expr, MCContext &Ctx, SMLoc Loc=SMLoc())
Definition: MCExpr.h:451
HexagonSubtarget.h
ErrorHandling.h
llvm::X86Disassembler::Reg
Reg
All possible values of the reg field in the ModR/M byte.
Definition: X86DisassemblerDecoder.h:462
llvm::MCSymbol::isUndefined
bool isUndefined(bool SetUsed=true) const
isUndefined - Check if this symbol undefined (i.e., implicitly defined).
Definition: MCSymbol.h:252
MachineBasicBlock.h
llvm::TargetSubtargetInfo::getRegisterInfo
virtual const TargetRegisterInfo * getRegisterInfo() const
getRegisterInfo - If register information is available, return it.
Definition: TargetSubtargetInfo.h:125
llvm::MCStreamer::emitValue
void emitValue(const MCExpr *Value, unsigned Size, SMLoc Loc=SMLoc())
Definition: MCStreamer.cpp:178
llvm::TargetRegisterInfo
TargetRegisterInfo base class - We assume that the target defines a static array of TargetRegisterDes...
Definition: TargetRegisterInfo.h:234
llvm::MCRegisterInfo::getEncodingValue
uint16_t getEncodingValue(MCRegister RegNo) const
Returns the encoding for RegNo.
Definition: MCRegisterInfo.h:553
llvm::MachineOperand::isJTI
bool isJTI() const
isJTI - Tests if this is a MO_JumpTableIndex operand.
Definition: MachineOperand.h:336
llvm::AsmPrinter::PrintSymbolOperand
virtual void PrintSymbolOperand(const MachineOperand &MO, raw_ostream &OS)
Print the MachineOperand as a symbol.
Definition: AsmPrinterInlineAsm.cpp:457
llvm::AsmPrinter::SledKind
SledKind
Definition: AsmPrinter.h:324
HexagonAsmPrinter.h
llvm::ELF::SHF_ALLOC
@ SHF_ALLOC
Definition: ELF.h:1035
llvm::MCInst
Instances of this class represent a single low-level machine instruction.
Definition: MCInst.h:184
llvm::MCSectionELF
This represents a section on linux, lots of unix variants and some bare metal systems.
Definition: MCSectionELF.h:26
llvm::MCRegisterInfo::getSubReg
MCRegister getSubReg(MCRegister Reg, unsigned Idx) const
Returns the physical register number of sub-register "Index" for physical register RegNo.
Definition: MCRegisterInfo.cpp:32
llvm::HexagonAsmPrinter::PrintAsmOperand
bool PrintAsmOperand(const MachineInstr *MI, unsigned OpNo, const char *ExtraCode, raw_ostream &OS) override
PrintAsmOperand - Print out an operand for an inline asm expression.
Definition: HexagonAsmPrinter.cpp:114
llvm::HexagonMCExpr
Definition: HexagonMCExpr.h:15
llvm::MCInst::getNumOperands
unsigned getNumOperands() const
Definition: MCInst.h:208
TRI
unsigned const TargetRegisterInfo * TRI
Definition: MachineSink.cpp:1620
llvm::MachineOperand::MO_Register
@ MO_Register
Register operand.
Definition: MachineOperand.h:51
llvm::AsmPrinter::EmitToStreamer
void EmitToStreamer(MCStreamer &S, const MCInst &Inst)
Definition: AsmPrinter.cpp:401
llvm::MCSA_Local
@ MCSA_Local
.local (ELF)
Definition: MCDirectives.h:38
llvm::HexagonInstPrinter::getRegisterName
static const char * getRegisterName(unsigned RegNo)
llvm::MCInst::setOpcode
void setOpcode(unsigned Op)
Definition: MCInst.h:197
llvm::MachineBasicBlock::getSymbol
MCSymbol * getSymbol() const
Return the MCSymbol for this basic block.
Definition: MachineBasicBlock.cpp:57
CommandLine.h
llvm::MCStreamer
Streaming machine code generation interface.
Definition: MCStreamer.h:201
llvm::HexagonMCInstrInfo::setS27_2_reloc
void setS27_2_reloc(MCExpr const &Expr, bool Val=true)
Definition: HexagonMCInstrInfo.cpp:897
llvm::MCContext::getOrCreateSymbol
MCSymbol * getOrCreateSymbol(const Twine &Name)
Lookup the symbol inside with the specified Name.
Definition: MCContext.cpp:204
llvm::HexagonLowerToMC
void HexagonLowerToMC(const MCInstrInfo &MCII, const MachineInstr *MI, MCInst &MCB, HexagonAsmPrinter &AP)
Definition: HexagonMCInstLower.cpp:97
ELF.h
llvm::MachineOperand::MO_GlobalAddress
@ MO_GlobalAddress
Address of a global value.
Definition: MachineOperand.h:61
E
static GCRegistry::Add< CoreCLRGC > E("coreclr", "CoreCLR-compatible GC")
HexagonMCInstrInfo.h
llvm::MachineOperand::getImm
int64_t getImm() const
Definition: MachineOperand.h:546
llvm::HexagonMCInstrInfo::setMemReorderDisabled
void setMemReorderDisabled(MCInst &MCI)
Definition: HexagonMCInstrInfo.cpp:1013
llvm::AsmPrinter::OutStreamer
std::unique_ptr< MCStreamer > OutStreamer
This is the MCStreamer object for the file we are generating.
Definition: AsmPrinter.h:96
Twine.h
MCContext.h
llvm::HexagonMCExpr::create
static HexagonMCExpr * create(MCExpr const *Expr, MCContext &Ctx)
Definition: HexagonMCExpr.cpp:23
llvm::MCStreamer::emitLabel
virtual void emitLabel(MCSymbol *Symbol, SMLoc Loc=SMLoc())
Emit a label for Symbol into the current section.
Definition: MCStreamer.cpp:416
MCSymbol.h
llvm::HexagonAsmPrinter::EmitSled
void EmitSled(const MachineInstr &MI, SledKind Kind)
Definition: HexagonAsmPrinter.cpp:776
llvm::MCContext::getELFSection
MCSectionELF * getELFSection(const Twine &Section, unsigned Type, unsigned Flags)
Definition: MCContext.h:556
MCInst.h
llvm::AsmPrinter::isBlockOnlyReachableByFallthrough
virtual bool isBlockOnlyReachableByFallthrough(const MachineBasicBlock *MBB) const
Return true if the basic block has exactly one predecessor and the control transfer mechanism between...
Definition: AsmPrinter.cpp:3577
HexagonMCExpr.h
llvm::MachineOperand
MachineOperand class - Representation of each machine instruction operand.
Definition: MachineOperand.h:48
llvm::raw_ostream
This class implements an extremely fast bulk output stream that can only output to a stream.
Definition: raw_ostream.h:54
llvm::ThreadPriority::Low
@ Low
Lower the current thread's priority such that it does not affect foreground tasks significantly.
llvm::MCSymbol::getName
StringRef getName() const
getName - Get the symbol name.
Definition: MCSymbol.h:198
HexagonInstrInfo.h
llvm::StringRef::str
LLVM_NODISCARD std::string str() const
str - Get the contents as an std::string.
Definition: StringRef.h:245
llvm::MCSymbol::print
void print(raw_ostream &OS, const MCAsmInfo *MAI) const
print - Print the value to the stream OS.
Definition: MCSymbol.cpp:58
llvm::HexagonMCInstrInfo::bundleSize
size_t bundleSize(MCInst const &MCI)
Definition: HexagonMCInstrInfo.cpp:116
llvm::lltok::Kind
Kind
Definition: LLToken.h:18
llvm::HexagonAsmPrinter::emitInstruction
void emitInstruction(const MachineInstr *MI) override
Print out a single Hexagon MI to the current output stream.
Definition: HexagonAsmPrinter.cpp:745
X
static GCMetadataPrinterRegistry::Add< ErlangGCPrinter > X("erlang", "erlang-compatible garbage collector")
llvm::MachineBasicBlock
Definition: MachineBasicBlock.h:94
Hexagon.h
llvm::MCOperand::createInst
static MCOperand createInst(const MCInst *Val)
Definition: MCInst.h:169
llvm::MCInst::addOperand
void addOperand(const MCOperand Op)
Definition: MCInst.h:210
llvm::MCConstantExpr
Definition: MCExpr.h:144
llvm::HexagonSubtarget::getInstrInfo
const HexagonInstrInfo * getInstrInfo() const override
Definition: HexagonSubtarget.h:124
getHexagonRegisterPair
static unsigned getHexagonRegisterPair(unsigned Reg, const MCRegisterInfo *RI)
Definition: HexagonAsmPrinter.cpp:66
llvm::MachineFunction::getSubtarget
const TargetSubtargetInfo & getSubtarget() const
getSubtarget - Return the subtarget for which this machine code is being compiled.
Definition: MachineFunction.h:640
llvm::RISCVFenceField::O
@ O
Definition: RISCVBaseInfo.h:239
llvm::HexagonISD::CONST32
@ CONST32
Definition: HexagonISelLowering.h:37
llvm::AsmPrinter::GetCPISymbol
virtual MCSymbol * GetCPISymbol(unsigned CPID) const
Return the symbol for the specified constant pool entry.
Definition: AsmPrinter.cpp:3330
llvm::MachineOperand::isReg
bool isReg() const
isReg - Tests if this is a MO_Register operand.
Definition: MachineOperand.h:320
llvm::MachineInstr
Representation of each machine instruction.
Definition: MachineInstr.h:66
llvm::MachineBasicBlock::hasAddressTaken
bool hasAddressTaken() const
Test whether this block is potentially the target of an indirect branch.
Definition: MachineBasicBlock.h:220
LLVM_EXTERNAL_VISIBILITY
#define LLVM_EXTERNAL_VISIBILITY
Definition: Compiler.h:126
llvm::HexagonAsmPrinter::PrintAsmMemoryOperand
bool PrintAsmMemoryOperand(const MachineInstr *MI, unsigned OpNo, const char *ExtraCode, raw_ostream &OS) override
Print the specified operand of MI, an INLINEASM instruction, using the specified assembler variant as...
Definition: HexagonAsmPrinter.cpp:155
llvm::HexagonAsmPrinter::HexagonProcessInstruction
void HexagonProcessInstruction(MCInst &Inst, const MachineInstr &MBB)
Definition: HexagonAsmPrinter.cpp:265
llvm::HexagonMCInstrInfo::canonicalizePacket
bool canonicalizePacket(MCInstrInfo const &MCII, MCSubtargetInfo const &STI, MCContext &Context, MCInst &MCB, HexagonMCChecker *Checker, bool AttemptCompatibility=false)
Definition: HexagonMCInstrInfo.cpp:171
StringExtras.h
MCRegisterInfo.h
llvm::MachineOperand::isCPI
bool isCPI() const
isCPI - Tests if this is a MO_ConstantPoolIndex operand.
Definition: MachineOperand.h:332
llvm::MachineOperand::getType
MachineOperandType getType() const
getType - Returns the MachineOperandType for this operand.
Definition: MachineOperand.h:218
HexagonRegisterInfo.h
assert
assert(ImpDefSCC.getReg()==AMDGPU::SCC &&ImpDefSCC.isDef())
llvm::AsmPrinter::getSymbol
MCSymbol * getSymbol(const GlobalValue *GV) const
Definition: AsmPrinter.cpp:654
llvm::MCStreamer::emitIntValue
virtual void emitIntValue(uint64_t Value, unsigned Size)
Special case of EmitValue that avoids the client having to pass in a MCExpr for constant integers.
Definition: MCStreamer.cpp:134
llvm::MCBinaryExpr::createSub
static const MCBinaryExpr * createSub(const MCExpr *LHS, const MCExpr *RHS, MCContext &Ctx)
Definition: MCExpr.h:610
llvm::AsmPrinter::MF
MachineFunction * MF
The current machine function.
Definition: AsmPrinter.h:99
llvm::AsmPrinter::OutContext
MCContext & OutContext
This is the context for the output file that we are streaming.
Definition: AsmPrinter.h:91
llvm::MCSuperRegIterator
MCSuperRegIterator enumerates all super-registers of Reg.
Definition: MCRegisterInfo.h:644
llvm::HexagonAsmPrinter::isBlockOnlyReachableByFallthrough
bool isBlockOnlyReachableByFallthrough(const MachineBasicBlock *MBB) const override
Return true if the basic block has exactly one predecessor and the control transfer mechanism between...
Definition: HexagonAsmPrinter.cpp:106
llvm::MachineOperand::getReg
Register getReg() const
getReg - Returns the register number.
Definition: MachineOperand.h:359
ScaleVectorOffset
static MCInst ScaleVectorOffset(MCInst &Inst, unsigned OpNo, unsigned VectorSize, MCContext &Ctx)
Definition: HexagonAsmPrinter.cpp:246
llvm::MachineBasicBlock::instr_end
instr_iterator instr_end()
Definition: MachineBasicBlock.h:263
llvm::MachineFunction
Definition: MachineFunction.h:241
llvm::getTheHexagonTarget
Target & getTheHexagonTarget()
Definition: HexagonTargetInfo.cpp:13
llvm::MachineOperand::getMBB
MachineBasicBlock * getMBB() const
Definition: MachineOperand.h:561
llvm::StringRef
StringRef - Represent a constant reference to a string, i.e.
Definition: StringRef.h:58
llvm::AsmPrinter::GetJTISymbol
MCSymbol * GetJTISymbol(unsigned JTID, bool isLinkerPrivate=false) const
Return the symbol for the specified jump table entry.
Definition: AsmPrinter.cpp:3358
llvm_unreachable
#define llvm_unreachable(msg)
Marks that the current location is not supposed to be reachable.
Definition: ErrorHandling.h:143
llvm::MCOperand::createReg
static MCOperand createReg(unsigned Reg)
Definition: MCInst.h:134
llvm::AsmPrinter::SledKind::FUNCTION_EXIT
@ FUNCTION_EXIT
uint32_t
llvm::MachineOperand::MO_MachineBasicBlock
@ MO_MachineBasicBlock
MachineBasicBlock reference.
Definition: MachineOperand.h:55
TargetSubtargetInfo.h
llvm::MCRegisterInfo
MCRegisterInfo base class - We assume that the target defines a static array of MCRegisterDesc object...
Definition: MCRegisterInfo.h:135
llvm::MCContext::createTempSymbol
MCSymbol * createTempSymbol()
Create a temporary symbol with a unique name.
Definition: MCContext.cpp:321
llvm::Register
Wrapper class representing virtual and physical registers.
Definition: Register.h:19
llvm::AsmPrinter::SledKind::TAIL_CALL
@ TAIL_CALL
MBB
MachineBasicBlock & MBB
Definition: AArch64SLSHardening.cpp:74
llvm::AMDGPU::HSAMD::Kernel::Key::SymbolName
constexpr char SymbolName[]
Key for Kernel::Metadata::mSymbolName.
Definition: AMDGPUMetadata.h:386
llvm::Twine
Twine - A lightweight data structure for efficiently representing the concatenation of temporary valu...
Definition: Twine.h:83
llvm::MCInstrInfo
Interface to description of machine instruction set.
Definition: MCInstrInfo.h:26
llvm::GraphProgram::Name
Name
Definition: GraphWriter.h:50
llvm::HexagonAsmPrinter::LowerPATCHABLE_FUNCTION_ENTER
void LowerPATCHABLE_FUNCTION_ENTER(const MachineInstr &MI)
Definition: HexagonAsmPrinter.cpp:825
llvm::AsmPrinter::emitNops
void emitNops(unsigned N)
Emit N NOP instructions.
Definition: AsmPrinter.cpp:3306
llvm::MCStreamer::emitSymbolAttribute
virtual bool emitSymbolAttribute(MCSymbol *Symbol, MCSymbolAttr Attribute)=0
Add the given Attribute to Symbol.
llvm::AsmPrinter::getSubtargetInfo
const MCSubtargetInfo & getSubtargetInfo() const
Return information about subtarget.
Definition: AsmPrinter.cpp:396
llvm::ilist_iterator
Iterator for intrusive lists based on ilist_node.
Definition: ilist_iterator.h:57
llvm::MachineOperand::getIndex
int getIndex() const
Definition: MachineOperand.h:566
Success
#define Success
Definition: AArch64Disassembler.cpp:280
Casting.h
llvm::MCOperand::getExpr
const MCExpr * getExpr() const
Definition: MCInst.h:114
llvm::TargetStackID::Value
Value
Definition: TargetFrameLowering.h:27
llvm::MCInst::getOpcode
unsigned getOpcode() const
Definition: MCInst.h:198
llvm::AsmPrinter
This class is intended to be used as a driving class for all asm writers.
Definition: AsmPrinter.h:81
llvm::MCSymbolRefExpr::create
static const MCSymbolRefExpr * create(const MCSymbol *Symbol, MCContext &Ctx)
Definition: MCExpr.h:386
llvm::MCSA_Global
@ MCSA_Global
.type _foo, @gnu_unique_object
Definition: MCDirectives.h:30
llvm::HexagonAsmPrinter::LowerPATCHABLE_FUNCTION_EXIT
void LowerPATCHABLE_FUNCTION_EXIT(const MachineInstr &MI)
Definition: HexagonAsmPrinter.cpp:829
llvm::RISCVMatInt::Imm
@ Imm
Definition: RISCVMatInt.h:23
llvm::MCStreamer::getContext
MCContext & getContext() const
Definition: MCStreamer.h:282
llvm::MCStreamer::emitCodeAlignment
virtual void emitCodeAlignment(unsigned ByteAlignment, const MCSubtargetInfo *STI, unsigned MaxBytesToEmit=0)
Emit nops until the byte alignment ByteAlignment is reached.
Definition: MCStreamer.cpp:1208
llvm::ELF::SHT_PROGBITS
@ SHT_PROGBITS
Definition: ELF.h:955
LLVMInitializeHexagonAsmPrinter
LLVM_EXTERNAL_VISIBILITY void LLVMInitializeHexagonAsmPrinter()
Definition: HexagonAsmPrinter.cpp:837
MCStreamer.h
llvm::MCInst::getOperand
const MCOperand & getOperand(unsigned i) const
Definition: MCInst.h:206
llvm::MCSectionSubPair
std::pair< MCSection *, const MCExpr * > MCSectionSubPair
Definition: MCStreamer.h:66
llvm::HexagonAsmPrinter::LowerPATCHABLE_TAIL_CALL
void LowerPATCHABLE_TAIL_CALL(const MachineInstr &MI)
Definition: HexagonAsmPrinter.cpp:833
llvm::HexagonSubtarget
Definition: HexagonSubtarget.h:43
llvm::AsmPrinter::SledKind::FUNCTION_ENTER
@ FUNCTION_ENTER
MachineOperand.h
llvm::TargetRegisterInfo::getSubReg
MCRegister getSubReg(MCRegister Reg, unsigned Idx) const
Returns the physical register number of sub-register "Index" for physical register RegNo.
Definition: TargetRegisterInfo.h:1113
llvm::MCOperand
Instances of this class represent operands of the MCInst class.
Definition: MCInst.h:36
llvm::MCOperand::setReg
void setReg(unsigned Reg)
Set the register number.
Definition: MCInst.h:75
llvm::RegisterAsmPrinter
RegisterAsmPrinter - Helper template for registering a target specific assembly printer,...
Definition: TargetRegistry.h:1359
raw_ostream.h
n
The same transformation can work with an even modulo with the addition of a and shrink the compare RHS by the same amount Unless the target supports that transformation probably isn t worthwhile The transformation can also easily be made to work with non zero equality for n
Definition: README.txt:685
MachineFunction.h
TargetRegistry.h
llvm::MCStreamer::SwitchSection
virtual void SwitchSection(MCSection *Section, const MCExpr *Subsection=nullptr)
Set the current section where code is being emitted to Section.
Definition: MCStreamer.cpp:1218
MCExpr.h
llvm::MCSubtargetInfo
Generic base class for all target subtargets.
Definition: MCSubtargetInfo.h:76
llvm::Value
LLVM Value Representation.
Definition: Value.h:74
TargetRegisterInfo.h
llvm::MCExpr
Base class for the full range of assembler expressions which are needed for parsing.
Definition: MCExpr.h:35
llvm::MCInst::clear
void clear()
Definition: MCInst.h:215
llvm::AsmPrinter::PrintAsmOperand
virtual bool PrintAsmOperand(const MachineInstr *MI, unsigned OpNo, const char *ExtraCode, raw_ostream &OS)
Print the specified operand of MI, an INLINEASM instruction, using the specified assembler variant.
Definition: AsmPrinterInlineAsm.cpp:467
llvm::sampleprof::Base
@ Base
Definition: Discriminator.h:58
llvm::MachineOperand::isGlobal
bool isGlobal() const
isGlobal - Tests if this is a MO_GlobalAddress operand.
Definition: MachineOperand.h:338
llvm::MCOperand::getReg
unsigned getReg() const
Returns the register number.
Definition: MCInst.h:69
llvm::MachineOperand::MO_ConstantPoolIndex
@ MO_ConstantPoolIndex
Address of indexed Constant in Constant Pool.
Definition: MachineOperand.h:57
llvm::HexagonAsmPrinter
Definition: HexagonAsmPrinter.h:29
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