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MachineInstrBuilder.h
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1 //===- CodeGen/MachineInstrBuilder.h - Simplify creation of MIs --*- C++ -*-===//
2 //
3 // The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 //
10 // This file exposes a function named BuildMI, which is useful for dramatically
11 // simplifying how MachineInstr's are created. It allows use of code like this:
12 //
13 // M = BuildMI(MBB, MI, DL, TII.get(X86::ADD8rr), Dst)
14 // .addReg(argVal1)
15 // .addReg(argVal2);
16 //
17 //===----------------------------------------------------------------------===//
18 
19 #ifndef LLVM_CODEGEN_MACHINEINSTRBUILDER_H
20 #define LLVM_CODEGEN_MACHINEINSTRBUILDER_H
21 
22 #include "llvm/ADT/ArrayRef.h"
30 #include "llvm/IR/InstrTypes.h"
31 #include "llvm/IR/Intrinsics.h"
33 #include <cassert>
34 #include <cstdint>
35 #include <utility>
36 
37 namespace llvm {
38 
39 class MCInstrDesc;
40 class MDNode;
41 
42 namespace RegState {
43 
44  enum {
45  Define = 0x2,
46  Implicit = 0x4,
47  Kill = 0x8,
48  Dead = 0x10,
49  Undef = 0x20,
50  EarlyClobber = 0x40,
51  Debug = 0x80,
52  InternalRead = 0x100,
53  Renamable = 0x200,
57  };
58 
59 } // end namespace RegState
60 
62  MachineFunction *MF = nullptr;
63  MachineInstr *MI = nullptr;
64 
65 public:
66  MachineInstrBuilder() = default;
67 
68  /// Create a MachineInstrBuilder for manipulating an existing instruction.
69  /// F must be the machine function that was used to allocate I.
72  : MF(&F), MI(&*I) {}
73 
74  /// Allow automatic conversion to the machine instruction we are working on.
75  operator MachineInstr*() const { return MI; }
76  MachineInstr *operator->() const { return MI; }
77  operator MachineBasicBlock::iterator() const { return MI; }
78 
79  /// If conversion operators fail, use this method to get the MachineInstr
80  /// explicitly.
81  MachineInstr *getInstr() const { return MI; }
82 
83  /// Add a new virtual register operand.
84  const MachineInstrBuilder &addReg(unsigned RegNo, unsigned flags = 0,
85  unsigned SubReg = 0) const {
86  assert((flags & 0x1) == 0 &&
87  "Passing in 'true' to addReg is forbidden! Use enums instead.");
89  flags & RegState::Define,
90  flags & RegState::Implicit,
91  flags & RegState::Kill,
92  flags & RegState::Dead,
93  flags & RegState::Undef,
94  flags & RegState::EarlyClobber,
95  SubReg,
96  flags & RegState::Debug,
97  flags & RegState::InternalRead,
98  flags & RegState::Renamable));
99  return *this;
100  }
101 
102  /// Add a virtual register definition operand.
103  const MachineInstrBuilder &addDef(unsigned RegNo, unsigned Flags = 0,
104  unsigned SubReg = 0) const {
105  return addReg(RegNo, Flags | RegState::Define, SubReg);
106  }
107 
108  /// Add a virtual register use operand. It is an error for Flags to contain
109  /// `RegState::Define` when calling this function.
110  const MachineInstrBuilder &addUse(unsigned RegNo, unsigned Flags = 0,
111  unsigned SubReg = 0) const {
112  assert(!(Flags & RegState::Define) &&
113  "Misleading addUse defines register, use addReg instead.");
114  return addReg(RegNo, Flags, SubReg);
115  }
116 
117  /// Add a new immediate operand.
118  const MachineInstrBuilder &addImm(int64_t Val) const {
119  MI->addOperand(*MF, MachineOperand::CreateImm(Val));
120  return *this;
121  }
122 
123  const MachineInstrBuilder &addCImm(const ConstantInt *Val) const {
124  MI->addOperand(*MF, MachineOperand::CreateCImm(Val));
125  return *this;
126  }
127 
128  const MachineInstrBuilder &addFPImm(const ConstantFP *Val) const {
130  return *this;
131  }
132 
134  unsigned char TargetFlags = 0) const {
136  return *this;
137  }
138 
139  const MachineInstrBuilder &addFrameIndex(int Idx) const {
140  MI->addOperand(*MF, MachineOperand::CreateFI(Idx));
141  return *this;
142  }
143 
145  int Offset = 0,
146  unsigned char TargetFlags = 0) const {
148  return *this;
149  }
150 
151  const MachineInstrBuilder &addTargetIndex(unsigned Idx, int64_t Offset = 0,
152  unsigned char TargetFlags = 0) const {
154  TargetFlags));
155  return *this;
156  }
157 
159  unsigned char TargetFlags = 0) const {
161  return *this;
162  }
163 
165  int64_t Offset = 0,
166  unsigned char TargetFlags = 0) const {
168  return *this;
169  }
170 
171  const MachineInstrBuilder &addExternalSymbol(const char *FnName,
172  unsigned char TargetFlags = 0) const {
174  return *this;
175  }
176 
178  int64_t Offset = 0,
179  unsigned char TargetFlags = 0) const {
181  return *this;
182  }
183 
186  return *this;
187  }
188 
190  MI->addMemOperand(*MF, MMO);
191  return *this;
192  }
193 
195  MachineInstr::mmo_iterator e) const {
196  MI->setMemRefs(b, e);
197  return *this;
198  }
199 
201  unsigned> MemOperandsRef) const {
202  MI->setMemRefs(MemOperandsRef);
203  return *this;
204  }
205 
206  const MachineInstrBuilder &add(const MachineOperand &MO) const {
207  MI->addOperand(*MF, MO);
208  return *this;
209  }
210 
212  for (const MachineOperand &MO : MOs) {
213  MI->addOperand(*MF, MO);
214  }
215  return *this;
216  }
217 
218  const MachineInstrBuilder &addMetadata(const MDNode *MD) const {
220  assert((MI->isDebugValue() ? static_cast<bool>(MI->getDebugVariable())
221  : true) &&
222  "first MDNode argument of a DBG_VALUE not a variable");
223  assert((MI->isDebugLabel() ? static_cast<bool>(MI->getDebugLabel())
224  : true) &&
225  "first MDNode argument of a DBG_LABEL not a label");
226  return *this;
227  }
228 
229  const MachineInstrBuilder &addCFIIndex(unsigned CFIIndex) const {
230  MI->addOperand(*MF, MachineOperand::CreateCFIIndex(CFIIndex));
231  return *this;
232  }
233 
236  return *this;
237  }
238 
241  return *this;
242  }
243 
245  unsigned char TargetFlags = 0) const {
247  return *this;
248  }
249 
250  const MachineInstrBuilder &setMIFlags(unsigned Flags) const {
251  MI->setFlags(Flags);
252  return *this;
253  }
254 
256  MI->setFlag(Flag);
257  return *this;
258  }
259 
260  // Add a displacement from an existing MachineOperand with an added offset.
261  const MachineInstrBuilder &addDisp(const MachineOperand &Disp, int64_t off,
262  unsigned char TargetFlags = 0) const {
263  // If caller specifies new TargetFlags then use it, otherwise the
264  // default behavior is to copy the target flags from the existing
265  // MachineOperand. This means if the caller wants to clear the
266  // target flags it needs to do so explicitly.
267  if (0 == TargetFlags)
268  TargetFlags = Disp.getTargetFlags();
269 
270  switch (Disp.getType()) {
271  default:
272  llvm_unreachable("Unhandled operand type in addDisp()");
274  return addImm(Disp.getImm() + off);
276  return addConstantPoolIndex(Disp.getIndex(), Disp.getOffset() + off,
277  TargetFlags);
279  return addGlobalAddress(Disp.getGlobal(), Disp.getOffset() + off,
280  TargetFlags);
281  }
282  }
283 
284  /// Copy all the implicit operands from OtherMI onto this one.
285  const MachineInstrBuilder &
286  copyImplicitOps(const MachineInstr &OtherMI) const {
287  MI->copyImplicitOps(*MF, OtherMI);
288  return *this;
289  }
290 
292  const TargetRegisterInfo &TRI,
293  const RegisterBankInfo &RBI) const {
294  return constrainSelectedInstRegOperands(*MI, TII, TRI, RBI);
295  }
296 };
297 
298 /// Builder interface. Specify how to create the initial instruction itself.
300  const MCInstrDesc &MCID) {
301  return MachineInstrBuilder(MF, MF.CreateMachineInstr(MCID, DL));
302 }
303 
304 /// This version of the builder sets up the first operand as a
305 /// destination virtual register.
307  const MCInstrDesc &MCID, unsigned DestReg) {
308  return MachineInstrBuilder(MF, MF.CreateMachineInstr(MCID, DL))
309  .addReg(DestReg, RegState::Define);
310 }
311 
312 /// This version of the builder inserts the newly-built instruction before
313 /// the given position in the given MachineBasicBlock, and sets up the first
314 /// operand as a destination virtual register.
317  const DebugLoc &DL, const MCInstrDesc &MCID,
318  unsigned DestReg) {
319  MachineFunction &MF = *BB.getParent();
320  MachineInstr *MI = MF.CreateMachineInstr(MCID, DL);
321  BB.insert(I, MI);
322  return MachineInstrBuilder(MF, MI).addReg(DestReg, RegState::Define);
323 }
324 
325 /// This version of the builder inserts the newly-built instruction before
326 /// the given position in the given MachineBasicBlock, and sets up the first
327 /// operand as a destination virtual register.
328 ///
329 /// If \c I is inside a bundle, then the newly inserted \a MachineInstr is
330 /// added to the same bundle.
333  const DebugLoc &DL, const MCInstrDesc &MCID,
334  unsigned DestReg) {
335  MachineFunction &MF = *BB.getParent();
336  MachineInstr *MI = MF.CreateMachineInstr(MCID, DL);
337  BB.insert(I, MI);
338  return MachineInstrBuilder(MF, MI).addReg(DestReg, RegState::Define);
339 }
340 
342  const DebugLoc &DL, const MCInstrDesc &MCID,
343  unsigned DestReg) {
344  // Calling the overload for instr_iterator is always correct. However, the
345  // definition is not available in headers, so inline the check.
346  if (I.isInsideBundle())
347  return BuildMI(BB, MachineBasicBlock::instr_iterator(I), DL, MCID, DestReg);
348  return BuildMI(BB, MachineBasicBlock::iterator(I), DL, MCID, DestReg);
349 }
350 
352  const DebugLoc &DL, const MCInstrDesc &MCID,
353  unsigned DestReg) {
354  return BuildMI(BB, *I, DL, MCID, DestReg);
355 }
356 
357 /// This version of the builder inserts the newly-built instruction before the
358 /// given position in the given MachineBasicBlock, and does NOT take a
359 /// destination register.
362  const DebugLoc &DL,
363  const MCInstrDesc &MCID) {
364  MachineFunction &MF = *BB.getParent();
365  MachineInstr *MI = MF.CreateMachineInstr(MCID, DL);
366  BB.insert(I, MI);
367  return MachineInstrBuilder(MF, MI);
368 }
369 
372  const DebugLoc &DL,
373  const MCInstrDesc &MCID) {
374  MachineFunction &MF = *BB.getParent();
375  MachineInstr *MI = MF.CreateMachineInstr(MCID, DL);
376  BB.insert(I, MI);
377  return MachineInstrBuilder(MF, MI);
378 }
379 
381  const DebugLoc &DL,
382  const MCInstrDesc &MCID) {
383  // Calling the overload for instr_iterator is always correct. However, the
384  // definition is not available in headers, so inline the check.
385  if (I.isInsideBundle())
386  return BuildMI(BB, MachineBasicBlock::instr_iterator(I), DL, MCID);
387  return BuildMI(BB, MachineBasicBlock::iterator(I), DL, MCID);
388 }
389 
391  const DebugLoc &DL,
392  const MCInstrDesc &MCID) {
393  return BuildMI(BB, *I, DL, MCID);
394 }
395 
396 /// This version of the builder inserts the newly-built instruction at the end
397 /// of the given MachineBasicBlock, and does NOT take a destination register.
399  const MCInstrDesc &MCID) {
400  return BuildMI(*BB, BB->end(), DL, MCID);
401 }
402 
403 /// This version of the builder inserts the newly-built instruction at the
404 /// end of the given MachineBasicBlock, and sets up the first operand as a
405 /// destination virtual register.
407  const MCInstrDesc &MCID, unsigned DestReg) {
408  return BuildMI(*BB, BB->end(), DL, MCID, DestReg);
409 }
410 
411 /// This version of the builder builds a DBG_VALUE intrinsic
412 /// for either a value in a register or a register-indirect
413 /// address. The convention is that a DBG_VALUE is indirect iff the
414 /// second operand is an immediate.
416  const MCInstrDesc &MCID, bool IsIndirect,
417  unsigned Reg, const MDNode *Variable,
418  const MDNode *Expr);
419 
420 /// This version of the builder builds a DBG_VALUE intrinsic
421 /// for a MachineOperand.
423  const MCInstrDesc &MCID, bool IsIndirect,
424  MachineOperand &MO, const MDNode *Variable,
425  const MDNode *Expr);
426 
427 /// This version of the builder builds a DBG_VALUE intrinsic
428 /// for either a value in a register or a register-indirect
429 /// address and inserts it at position I.
432  const MCInstrDesc &MCID, bool IsIndirect,
433  unsigned Reg, const MDNode *Variable,
434  const MDNode *Expr);
435 
436 /// This version of the builder builds a DBG_VALUE intrinsic
437 /// for a machine operand and inserts it at position I.
440  const MCInstrDesc &MCID, bool IsIndirect,
441  MachineOperand &MO, const MDNode *Variable,
442  const MDNode *Expr);
443 
444 /// Clone a DBG_VALUE whose value has been spilled to FrameIndex.
447  const MachineInstr &Orig, int FrameIndex);
448 
449 /// Update a DBG_VALUE whose value has been spilled to FrameIndex. Useful when
450 /// modifying an instruction in place while iterating over a basic block.
451 void updateDbgValueForSpill(MachineInstr &Orig, int FrameIndex);
452 
453 inline unsigned getDefRegState(bool B) {
454  return B ? RegState::Define : 0;
455 }
456 inline unsigned getImplRegState(bool B) {
457  return B ? RegState::Implicit : 0;
458 }
459 inline unsigned getKillRegState(bool B) {
460  return B ? RegState::Kill : 0;
461 }
462 inline unsigned getDeadRegState(bool B) {
463  return B ? RegState::Dead : 0;
464 }
465 inline unsigned getUndefRegState(bool B) {
466  return B ? RegState::Undef : 0;
467 }
468 inline unsigned getInternalReadRegState(bool B) {
469  return B ? RegState::InternalRead : 0;
470 }
471 inline unsigned getDebugRegState(bool B) {
472  return B ? RegState::Debug : 0;
473 }
474 inline unsigned getRenamableRegState(bool B) {
475  return B ? RegState::Renamable : 0;
476 }
477 
478 /// Get all register state flags from machine operand \p RegOp.
479 inline unsigned getRegState(const MachineOperand &RegOp) {
480  assert(RegOp.isReg() && "Not a register operand");
481  return getDefRegState(RegOp.isDef()) |
482  getImplRegState(RegOp.isImplicit()) |
483  getKillRegState(RegOp.isKill()) |
484  getDeadRegState(RegOp.isDead()) |
485  getUndefRegState(RegOp.isUndef()) |
487  getDebugRegState(RegOp.isDebug()) |
490  RegOp.isRenamable());
491 }
492 
493 /// Helper class for constructing bundles of MachineInstrs.
494 ///
495 /// MIBundleBuilder can create a bundle from scratch by inserting new
496 /// MachineInstrs one at a time, or it can create a bundle from a sequence of
497 /// existing MachineInstrs in a basic block.
499  MachineBasicBlock &MBB;
502 
503 public:
504  /// Create an MIBundleBuilder that inserts instructions into a new bundle in
505  /// BB above the bundle or instruction at Pos.
507  : MBB(BB), Begin(Pos.getInstrIterator()), End(Begin) {}
508 
509  /// Create a bundle from the sequence of instructions between B and E.
512  : MBB(BB), Begin(B.getInstrIterator()), End(E.getInstrIterator()) {
513  assert(B != E && "No instructions to bundle");
514  ++B;
515  while (B != E) {
516  MachineInstr &MI = *B;
517  ++B;
518  MI.bundleWithPred();
519  }
520  }
521 
522  /// Create an MIBundleBuilder representing an existing instruction or bundle
523  /// that has MI as its head.
525  : MBB(*MI->getParent()), Begin(MI),
526  End(getBundleEnd(MI->getIterator())) {}
527 
528  /// Return a reference to the basic block containing this bundle.
529  MachineBasicBlock &getMBB() const { return MBB; }
530 
531  /// Return true if no instructions have been inserted in this bundle yet.
532  /// Empty bundles aren't representable in a MachineBasicBlock.
533  bool empty() const { return Begin == End; }
534 
535  /// Return an iterator to the first bundled instruction.
536  MachineBasicBlock::instr_iterator begin() const { return Begin; }
537 
538  /// Return an iterator beyond the last bundled instruction.
539  MachineBasicBlock::instr_iterator end() const { return End; }
540 
541  /// Insert MI into this bundle before I which must point to an instruction in
542  /// the bundle, or end().
544  MachineInstr *MI) {
545  MBB.insert(I, MI);
546  if (I == Begin) {
547  if (!empty())
548  MI->bundleWithSucc();
549  Begin = MI->getIterator();
550  return *this;
551  }
552  if (I == End) {
553  MI->bundleWithPred();
554  return *this;
555  }
556  // MI was inserted in the middle of the bundle, so its neighbors' flags are
557  // already fine. Update MI's bundle flags manually.
560  return *this;
561  }
562 
563  /// Insert MI into MBB by prepending it to the instructions in the bundle.
564  /// MI will become the first instruction in the bundle.
566  return insert(begin(), MI);
567  }
568 
569  /// Insert MI into MBB by appending it to the instructions in the bundle.
570  /// MI will become the last instruction in the bundle.
572  return insert(end(), MI);
573  }
574 };
575 
576 } // end namespace llvm
577 
578 #endif // LLVM_CODEGEN_MACHINEINSTRBUILDER_H
unsigned getTargetFlags() const
MachineBasicBlock & getMBB() const
Return a reference to the basic block containing this bundle.
void bundleWithPred()
Bundle this instruction with its predecessor.
const MachineInstrBuilder & addMetadata(const MDNode *MD) const
const MachineInstrBuilder & add(const MachineOperand &MO) const
const_iterator end(StringRef path)
Get end iterator over path.
Definition: Path.cpp:250
MIBundleBuilder(MachineBasicBlock &BB, MachineBasicBlock::iterator Pos)
Create an MIBundleBuilder that inserts instructions into a new bundle in BB above the bundle or instr...
bool isDebugLabel() const
Definition: MachineInstr.h:850
static MachineOperand CreateCImm(const ConstantInt *CI)
const_iterator begin(StringRef path, Style style=Style::native)
Get begin iterator over path.
Definition: Path.cpp:241
unsigned getRegState(const MachineOperand &RegOp)
Get all register state flags from machine operand RegOp.
Compute iterated dominance frontiers using a linear time algorithm.
Definition: AllocatorList.h:24
static MachineOperand CreateMCSymbol(MCSymbol *Sym, unsigned char TargetFlags=0)
MCSymbol - Instances of this class represent a symbol name in the MC file, and MCSymbols are created ...
Definition: MCSymbol.h:42
const MachineInstrBuilder & addIntrinsicID(Intrinsic::ID ID) const
const MachineInstrBuilder & addCFIIndex(unsigned CFIIndex) const
static MachineOperand CreateJTI(unsigned Idx, unsigned char TargetFlags=0)
Describe properties that are true of each instruction in the target description file.
Definition: MCInstrDesc.h:162
unsigned getReg() const
getReg - Returns the register number.
unsigned Reg
const MachineInstrBuilder & addPredicate(CmpInst::Predicate Pred) const
unsigned getInternalReadRegState(bool B)
unsigned const TargetRegisterInfo * TRI
A debug info location.
Definition: DebugLoc.h:34
Metadata node.
Definition: Metadata.h:862
F(f)
const MachineInstrBuilder & addGlobalAddress(const GlobalValue *GV, int64_t Offset=0, unsigned char TargetFlags=0) const
MachineInstr * CreateMachineInstr(const MCInstrDesc &MCID, const DebugLoc &DL, bool NoImp=false)
CreateMachineInstr - Allocate a new MachineInstr.
const MachineInstrBuilder & addTargetIndex(unsigned Idx, int64_t Offset=0, unsigned char TargetFlags=0) const
bool isInternalRead() const
static MachineOperand CreateIntrinsicID(Intrinsic::ID ID)
const MachineInstrBuilder & setMIFlag(MachineInstr::MIFlag Flag) const
static MachineOperand CreateReg(unsigned Reg, bool isDef, bool isImp=false, bool isKill=false, bool isDead=false, bool isUndef=false, bool isEarlyClobber=false, unsigned SubReg=0, bool isDebug=false, bool isInternalRead=false, bool isRenamable=false)
MIBundleBuilder(MachineBasicBlock &BB, MachineBasicBlock::iterator B, MachineBasicBlock::iterator E)
Create a bundle from the sequence of instructions between B and E.
The address of a basic block.
Definition: Constants.h:836
Holds all the information related to register banks.
A description of a memory reference used in the backend.
MachineInstr * buildDbgValueForSpill(MachineBasicBlock &BB, MachineBasicBlock::iterator I, const MachineInstr &Orig, int FrameIndex)
Clone a DBG_VALUE whose value has been spilled to FrameIndex.
MachineInstrBuilder(MachineFunction &F, MachineInstr *I)
Create a MachineInstrBuilder for manipulating an existing instruction.
const HexagonInstrInfo * TII
const MachineInstrBuilder & addUse(unsigned RegNo, unsigned Flags=0, unsigned SubReg=0) const
Add a virtual register use operand.
unsigned SubReg
void bundleWithSucc()
Bundle this instruction with its successor.
static MachineOperand CreateRegMask(const uint32_t *Mask)
CreateRegMask - Creates a register mask operand referencing Mask.
void copyImplicitOps(MachineFunction &MF, const MachineInstr &MI)
Copy implicit register operands from specified instruction to this instruction.
MIBundleBuilder & prepend(MachineInstr *MI)
Insert MI into MBB by prepending it to the instructions in the bundle.
const MachineInstrBuilder & addFPImm(const ConstantFP *Val) const
ArrayRef - Represent a constant reference to an array (0 or more elements consecutively in memory)...
Definition: APInt.h:33
void addMemOperand(MachineFunction &MF, MachineMemOperand *MO)
Add a MachineMemOperand to the machine instruction.
static MachineOperand CreatePredicate(unsigned Pred)
instr_iterator insert(instr_iterator I, MachineInstr *M)
Insert MI into the instruction list before I, possibly inside a bundle.
bool isInsideBundle() const
Return true if MI is in a bundle (but not the first MI in a bundle).
Definition: MachineInstr.h:252
unsigned getUndefRegState(bool B)
unsigned getKillRegState(bool B)
Flag
These should be considered private to the implementation of the MCInstrDesc class.
Definition: MCInstrDesc.h:118
unsigned getDebugRegState(bool B)
TargetInstrInfo - Interface to description of machine instruction set.
unsigned getDeadRegState(bool B)
unsigned getDefRegState(bool B)
MachineInstrBuilder BuildMI(MachineFunction &MF, const DebugLoc &DL, const MCInstrDesc &MCID)
Builder interface. Specify how to create the initial instruction itself.
Address of a global value.
MachineInstrBundleIterator< MachineInstr > iterator
static GCRegistry::Add< OcamlGC > B("ocaml", "ocaml 3.10-compatible GC")
const MachineInstrBuilder & addBlockAddress(const BlockAddress *BA, int64_t Offset=0, unsigned char TargetFlags=0) const
static MachineOperand CreateCPI(unsigned Idx, int Offset, unsigned char TargetFlags=0)
const MachineInstrBuilder & addCImm(const ConstantInt *Val) const
static MachineOperand CreateFPImm(const ConstantFP *CFP)
static GCRegistry::Add< CoreCLRGC > E("coreclr", "CoreCLR-compatible GC")
const GlobalValue * getGlobal() const
ConstantFP - Floating Point Values [float, double].
Definition: Constants.h:264
static MachineOperand CreateBA(const BlockAddress *BA, int64_t Offset, unsigned char TargetFlags=0)
void setFlag(MIFlag Flag)
Set a MI flag.
Definition: MachineInstr.h:202
MachineBasicBlock::instr_iterator begin() const
Return an iterator to the first bundled instruction.
const MachineInstrBuilder & addRegMask(const uint32_t *Mask) const
Predicate
This enumeration lists the possible predicates for CmpInst subclasses.
Definition: InstrTypes.h:885
const DILabel * getDebugLabel() const
Return the debug label referenced by this DBG_LABEL instruction.
static MachineOperand CreateGA(const GlobalValue *GV, int64_t Offset, unsigned char TargetFlags=0)
static MachineOperand CreateTargetIndex(unsigned Idx, int64_t Offset, unsigned char TargetFlags=0)
self_iterator getIterator()
Definition: ilist_node.h:82
const MachineInstrBuilder & addSym(MCSymbol *Sym, unsigned char TargetFlags=0) const
const MachineInstrBuilder & addFrameIndex(int Idx) const
TargetRegisterInfo base class - We assume that the target defines a static array of TargetRegisterDes...
const MachineInstrBuilder & add(ArrayRef< MachineOperand > MOs) const
#define llvm_unreachable(msg)
Marks that the current location is not supposed to be reachable.
static MachineOperand CreateMetadata(const MDNode *Meta)
This is the shared class of boolean and integer constants.
Definition: Constants.h:84
void addOperand(MachineFunction &MF, const MachineOperand &Op)
Add the specified operand to the instruction.
unsigned getRenamableRegState(bool B)
MachineBasicBlock::instr_iterator end() const
Return an iterator beyond the last bundled instruction.
void setFlags(unsigned flags)
Definition: MachineInstr.h:206
MachineInstr * operator->() const
bool isDebugValue() const
Definition: MachineInstr.h:849
MachineOperand class - Representation of each machine instruction operand.
bool empty() const
Return true if no instructions have been inserted in this bundle yet.
const MachineInstrBuilder & addMemOperand(MachineMemOperand *MMO) const
const MachineInstrBuilder & addConstantPoolIndex(unsigned Idx, int Offset=0, unsigned char TargetFlags=0) const
const MachineInstrBuilder & addDisp(const MachineOperand &Disp, int64_t off, unsigned char TargetFlags=0) const
void updateDbgValueForSpill(MachineInstr &Orig, int FrameIndex)
Update a DBG_VALUE whose value has been spilled to FrameIndex.
bool constrainSelectedInstRegOperands(MachineInstr &I, const TargetInstrInfo &TII, const TargetRegisterInfo &TRI, const RegisterBankInfo &RBI)
Mutate the newly-selected instruction I to constrain its (possibly generic) virtual register operands...
Definition: Utils.cpp:88
MachineInstr * getInstr() const
If conversion operators fail, use this method to get the MachineInstr explicitly. ...
MIBundleBuilder & insert(MachineBasicBlock::instr_iterator I, MachineInstr *MI)
Insert MI into this bundle before I which must point to an instruction in the bundle, or end().
int64_t getImm() const
static MachineOperand CreateES(const char *SymName, unsigned char TargetFlags=0)
bool isRenamable() const
isRenamable - Returns true if this register may be renamed, i.e.
const MachineInstrBuilder & copyImplicitOps(const MachineInstr &OtherMI) const
Copy all the implicit operands from OtherMI onto this one.
Representation of each machine instruction.
Definition: MachineInstr.h:60
static bool isPhysicalRegister(unsigned Reg)
Return true if the specified register number is in the physical register namespace.
const MachineFunction * getParent() const
Return the MachineFunction containing this basic block.
const MachineInstrBuilder & setMemRefs(std::pair< MachineInstr::mmo_iterator, unsigned > MemOperandsRef) const
const MachineInstrBuilder & addImm(int64_t Val) const
Add a new immediate operand.
static MachineOperand CreateMBB(MachineBasicBlock *MBB, unsigned char TargetFlags=0)
const MachineInstrBuilder & setMIFlags(unsigned Flags) const
static MachineOperand CreateCFIIndex(unsigned CFIIndex)
int64_t getOffset() const
Return the offset from the symbol in this operand.
const MachineInstrBuilder & addExternalSymbol(const char *FnName, unsigned char TargetFlags=0) const
static MachineOperand CreateImm(int64_t Val)
#define I(x, y, z)
Definition: MD5.cpp:58
unsigned getImplRegState(bool B)
const MachineInstrBuilder & addReg(unsigned RegNo, unsigned flags=0, unsigned SubReg=0) const
Add a new virtual register operand.
bool isReg() const
isReg - Tests if this is a MO_Register operand.
Instructions::iterator instr_iterator
const MachineInstrBuilder & addJumpTableIndex(unsigned Idx, unsigned char TargetFlags=0) const
MIBundleBuilder & append(MachineInstr *MI)
Insert MI into MBB by appending it to the instructions in the bundle.
assert(ImpDefSCC.getReg()==AMDGPU::SCC &&ImpDefSCC.isDef())
const DILocalVariable * getDebugVariable() const
Return the debug variable referenced by this DBG_VALUE instruction.
std::underlying_type< E >::type Mask()
Get a bitmask with 1s in all places up to the high-order bit of E&#39;s largest value.
Definition: BitmaskEnum.h:81
static const Function * getParent(const Value *V)
IRTranslator LLVM IR MI
Address of indexed Constant in Constant Pool.
const MachineInstrBuilder & addDef(unsigned RegNo, unsigned Flags=0, unsigned SubReg=0) const
Add a virtual register definition operand.
MachineBasicBlock::instr_iterator getBundleEnd(MachineBasicBlock::instr_iterator I)
Returns an iterator pointing beyond the bundle containing I.
const MachineInstrBuilder & addMBB(MachineBasicBlock *MBB, unsigned char TargetFlags=0) const
const MachineInstrBuilder & setMemRefs(MachineInstr::mmo_iterator b, MachineInstr::mmo_iterator e) const
MachineOperandType getType() const
getType - Returns the MachineOperandType for this operand.
static MachineOperand CreateFI(int Idx)
void setMemRefs(mmo_iterator NewMemRefs, mmo_iterator NewMemRefsEnd)
Assign this MachineInstr&#39;s memory reference descriptor list.
MachineInstrBuilder(MachineFunction &F, MachineBasicBlock::iterator I)
MIBundleBuilder(MachineInstr *MI)
Create an MIBundleBuilder representing an existing instruction or bundle that has MI as its head...
bool constrainAllUses(const TargetInstrInfo &TII, const TargetRegisterInfo &TRI, const RegisterBankInfo &RBI) const
Helper class for constructing bundles of MachineInstrs.
bool isImplicit() const