LLVM  14.0.0git
MachineFunction.h
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1 //===- llvm/CodeGen/MachineFunction.h ---------------------------*- C++ -*-===//
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 // Collect native machine code for a function. This class contains a list of
10 // MachineBasicBlock instances that make up the current compiled function.
11 //
12 // This class also contains pointers to various classes which hold
13 // target-specific information about the generated code.
14 //
15 //===----------------------------------------------------------------------===//
16 
17 #ifndef LLVM_CODEGEN_MACHINEFUNCTION_H
18 #define LLVM_CODEGEN_MACHINEFUNCTION_H
19 
20 #include "llvm/ADT/ArrayRef.h"
21 #include "llvm/ADT/BitVector.h"
22 #include "llvm/ADT/DenseMap.h"
23 #include "llvm/ADT/GraphTraits.h"
24 #include "llvm/ADT/SmallVector.h"
25 #include "llvm/ADT/ilist.h"
26 #include "llvm/ADT/iterator.h"
31 #include "llvm/Support/Allocator.h"
34 #include "llvm/Support/Compiler.h"
35 #include "llvm/Support/Recycler.h"
37 #include <cassert>
38 #include <cstdint>
39 #include <memory>
40 #include <utility>
41 #include <vector>
42 
43 namespace llvm {
44 
45 class BasicBlock;
46 class BlockAddress;
47 class DataLayout;
48 class DebugLoc;
49 struct DenormalMode;
50 class DIExpression;
51 class DILocalVariable;
52 class DILocation;
53 class Function;
54 class GISelChangeObserver;
55 class GlobalValue;
56 class LLVMTargetMachine;
57 class MachineConstantPool;
58 class MachineFrameInfo;
59 class MachineFunction;
60 class MachineJumpTableInfo;
61 class MachineModuleInfo;
62 class MachineRegisterInfo;
63 class MCContext;
64 class MCInstrDesc;
65 class MCSymbol;
66 class MCSection;
67 class Pass;
68 class PseudoSourceValueManager;
69 class raw_ostream;
70 class SlotIndexes;
71 class StringRef;
72 class TargetRegisterClass;
73 class TargetSubtargetInfo;
74 struct WasmEHFuncInfo;
75 struct WinEHFuncInfo;
76 
79 };
80 
84 
85  template <class Iterator>
86  void transferNodesFromList(ilist_callback_traits &OldList, Iterator, Iterator) {
87  assert(this == &OldList && "never transfer MBBs between functions");
88  }
89 };
90 
91 /// MachineFunctionInfo - This class can be derived from and used by targets to
92 /// hold private target-specific information for each MachineFunction. Objects
93 /// of type are accessed/created with MF::getInfo and destroyed when the
94 /// MachineFunction is destroyed.
96  virtual ~MachineFunctionInfo();
97 
98  /// Factory function: default behavior is to call new using the
99  /// supplied allocator.
100  ///
101  /// This function can be overridden in a derive class.
102  template<typename Ty>
104  return new (Allocator.Allocate<Ty>()) Ty(MF);
105  }
106 };
107 
108 /// Properties which a MachineFunction may have at a given point in time.
109 /// Each of these has checking code in the MachineVerifier, and passes can
110 /// require that a property be set.
112  // Possible TODO: Allow targets to extend this (perhaps by allowing the
113  // constructor to specify the size of the bit vector)
114  // Possible TODO: Allow requiring the negative (e.g. VRegsAllocated could be
115  // stated as the negative of "has vregs"
116 
117 public:
118  // The properties are stated in "positive" form; i.e. a pass could require
119  // that the property hold, but not that it does not hold.
120 
121  // Property descriptions:
122  // IsSSA: True when the machine function is in SSA form and virtual registers
123  // have a single def.
124  // NoPHIs: The machine function does not contain any PHI instruction.
125  // TracksLiveness: True when tracking register liveness accurately.
126  // While this property is set, register liveness information in basic block
127  // live-in lists and machine instruction operands (e.g. implicit defs) is
128  // accurate, kill flags are conservatively accurate (kill flag correctly
129  // indicates the last use of a register, an operand without kill flag may or
130  // may not be the last use of a register). This means it can be used to
131  // change the code in ways that affect the values in registers, for example
132  // by the register scavenger.
133  // When this property is cleared at a very late time, liveness is no longer
134  // reliable.
135  // NoVRegs: The machine function does not use any virtual registers.
136  // Legalized: In GlobalISel: the MachineLegalizer ran and all pre-isel generic
137  // instructions have been legalized; i.e., all instructions are now one of:
138  // - generic and always legal (e.g., COPY)
139  // - target-specific
140  // - legal pre-isel generic instructions.
141  // RegBankSelected: In GlobalISel: the RegBankSelect pass ran and all generic
142  // virtual registers have been assigned to a register bank.
143  // Selected: In GlobalISel: the InstructionSelect pass ran and all pre-isel
144  // generic instructions have been eliminated; i.e., all instructions are now
145  // target-specific or non-pre-isel generic instructions (e.g., COPY).
146  // Since only pre-isel generic instructions can have generic virtual register
147  // operands, this also means that all generic virtual registers have been
148  // constrained to virtual registers (assigned to register classes) and that
149  // all sizes attached to them have been eliminated.
150  // TiedOpsRewritten: The twoaddressinstruction pass will set this flag, it
151  // means that tied-def have been rewritten to meet the RegConstraint.
152  enum class Property : unsigned {
153  IsSSA,
154  NoPHIs,
156  NoVRegs,
157  FailedISel,
158  Legalized,
160  Selected,
163  };
164 
165  bool hasProperty(Property P) const {
166  return Properties[static_cast<unsigned>(P)];
167  }
168 
170  Properties.set(static_cast<unsigned>(P));
171  return *this;
172  }
173 
175  Properties.reset(static_cast<unsigned>(P));
176  return *this;
177  }
178 
179  /// Reset all the properties.
181  Properties.reset();
182  return *this;
183  }
184 
186  Properties |= MFP.Properties;
187  return *this;
188  }
189 
191  Properties.reset(MFP.Properties);
192  return *this;
193  }
194 
195  // Returns true if all properties set in V (i.e. required by a pass) are set
196  // in this.
198  return !V.Properties.test(Properties);
199  }
200 
201  /// Print the MachineFunctionProperties in human-readable form.
202  void print(raw_ostream &OS) const;
203 
204 private:
205  BitVector Properties =
206  BitVector(static_cast<unsigned>(Property::LastProperty)+1);
207 };
208 
209 struct SEHHandler {
210  /// Filter or finally function. Null indicates a catch-all.
212 
213  /// Address of block to recover at. Null for a finally handler.
215 };
216 
217 /// This structure is used to retain landing pad info for the current function.
219  MachineBasicBlock *LandingPadBlock; // Landing pad block.
220  SmallVector<MCSymbol *, 1> BeginLabels; // Labels prior to invoke.
221  SmallVector<MCSymbol *, 1> EndLabels; // Labels after invoke.
222  SmallVector<SEHHandler, 1> SEHHandlers; // SEH handlers active at this lpad.
223  MCSymbol *LandingPadLabel = nullptr; // Label at beginning of landing pad.
224  std::vector<int> TypeIds; // List of type ids (filters negative).
225 
227  : LandingPadBlock(MBB) {}
228 };
229 
231  Function &F;
232  const LLVMTargetMachine &Target;
233  const TargetSubtargetInfo *STI;
234  MCContext &Ctx;
235  MachineModuleInfo &MMI;
236 
237  // RegInfo - Information about each register in use in the function.
239 
240  // Used to keep track of target-specific per-machine function information for
241  // the target implementation.
242  MachineFunctionInfo *MFInfo;
243 
244  // Keep track of objects allocated on the stack.
245  MachineFrameInfo *FrameInfo;
246 
247  // Keep track of constants which are spilled to memory
249 
250  // Keep track of jump tables for switch instructions
251  MachineJumpTableInfo *JumpTableInfo;
252 
253  // Keep track of the function section.
254  MCSection *Section = nullptr;
255 
256  // Keeps track of Wasm exception handling related data. This will be null for
257  // functions that aren't using a wasm EH personality.
258  WasmEHFuncInfo *WasmEHInfo = nullptr;
259 
260  // Keeps track of Windows exception handling related data. This will be null
261  // for functions that aren't using a funclet-based EH personality.
262  WinEHFuncInfo *WinEHInfo = nullptr;
263 
264  // Function-level unique numbering for MachineBasicBlocks. When a
265  // MachineBasicBlock is inserted into a MachineFunction is it automatically
266  // numbered and this vector keeps track of the mapping from ID's to MBB's.
267  std::vector<MachineBasicBlock*> MBBNumbering;
268 
269  // Unary encoding of basic block symbols is used to reduce size of ".strtab".
270  // Basic block number 'i' gets a prefix of length 'i'. The ith character also
271  // denotes the type of basic block number 'i'. Return blocks are marked with
272  // 'r', landing pads with 'l' and regular blocks with 'a'.
273  std::vector<char> BBSectionsSymbolPrefix;
274 
275  // Pool-allocate MachineFunction-lifetime and IR objects.
277 
278  // Allocation management for instructions in function.
279  Recycler<MachineInstr> InstructionRecycler;
280 
281  // Allocation management for operand arrays on instructions.
282  ArrayRecycler<MachineOperand> OperandRecycler;
283 
284  // Allocation management for basic blocks in function.
285  Recycler<MachineBasicBlock> BasicBlockRecycler;
286 
287  // List of machine basic blocks in function
289  BasicBlockListType BasicBlocks;
290 
291  /// FunctionNumber - This provides a unique ID for each function emitted in
292  /// this translation unit.
293  ///
294  unsigned FunctionNumber;
295 
296  /// Alignment - The alignment of the function.
297  Align Alignment;
298 
299  /// ExposesReturnsTwice - True if the function calls setjmp or related
300  /// functions with attribute "returns twice", but doesn't have
301  /// the attribute itself.
302  /// This is used to limit optimizations which cannot reason
303  /// about the control flow of such functions.
304  bool ExposesReturnsTwice = false;
305 
306  /// True if the function includes any inline assembly.
307  bool HasInlineAsm = false;
308 
309  /// True if any WinCFI instruction have been emitted in this function.
310  bool HasWinCFI = false;
311 
312  /// Current high-level properties of the IR of the function (e.g. is in SSA
313  /// form or whether registers have been allocated)
314  MachineFunctionProperties Properties;
315 
316  // Allocation management for pseudo source values.
317  std::unique_ptr<PseudoSourceValueManager> PSVManager;
318 
319  /// List of moves done by a function's prolog. Used to construct frame maps
320  /// by debug and exception handling consumers.
321  std::vector<MCCFIInstruction> FrameInstructions;
322 
323  /// List of basic blocks immediately following calls to _setjmp. Used to
324  /// construct a table of valid longjmp targets for Windows Control Flow Guard.
325  std::vector<MCSymbol *> LongjmpTargets;
326 
327  /// List of basic blocks that are the target of catchrets. Used to construct
328  /// a table of valid targets for Windows EHCont Guard.
329  std::vector<MCSymbol *> CatchretTargets;
330 
331  /// \name Exception Handling
332  /// \{
333 
334  /// List of LandingPadInfo describing the landing pad information.
335  std::vector<LandingPadInfo> LandingPads;
336 
337  /// Map a landing pad's EH symbol to the call site indexes.
339 
340  /// Map a landing pad to its index.
342 
343  /// Map of invoke call site index values to associated begin EH_LABEL.
344  DenseMap<MCSymbol*, unsigned> CallSiteMap;
345 
346  /// CodeView label annotations.
347  std::vector<std::pair<MCSymbol *, MDNode *>> CodeViewAnnotations;
348 
349  bool CallsEHReturn = false;
350  bool CallsUnwindInit = false;
351  bool HasEHCatchret = false;
352  bool HasEHScopes = false;
353  bool HasEHFunclets = false;
354 
355  /// Section Type for basic blocks, only relevant with basic block sections.
357 
358  /// List of C++ TypeInfo used.
359  std::vector<const GlobalValue *> TypeInfos;
360 
361  /// List of typeids encoding filters used.
362  std::vector<unsigned> FilterIds;
363 
364  /// List of the indices in FilterIds corresponding to filter terminators.
365  std::vector<unsigned> FilterEnds;
366 
367  EHPersonality PersonalityTypeCache = EHPersonality::Unknown;
368 
369  /// \}
370 
371  /// Clear all the members of this MachineFunction, but the ones used
372  /// to initialize again the MachineFunction.
373  /// More specifically, this deallocates all the dynamically allocated
374  /// objects and get rid of all the XXXInfo data structure, but keep
375  /// unchanged the references to Fn, Target, MMI, and FunctionNumber.
376  void clear();
377  /// Allocate and initialize the different members.
378  /// In particular, the XXXInfo data structure.
379  /// \pre Fn, Target, MMI, and FunctionNumber are properly set.
380  void init();
381 
382 public:
386  // The Slot can be negative for fixed stack objects.
387  int Slot;
388  const DILocation *Loc;
389 
391  int Slot, const DILocation *Loc)
392  : Var(Var), Expr(Expr), Slot(Slot), Loc(Loc) {}
393  };
394 
395  class Delegate {
396  virtual void anchor();
397 
398  public:
399  virtual ~Delegate() = default;
400  /// Callback after an insertion. This should not modify the MI directly.
401  virtual void MF_HandleInsertion(MachineInstr &MI) = 0;
402  /// Callback before a removal. This should not modify the MI directly.
403  virtual void MF_HandleRemoval(MachineInstr &MI) = 0;
404  };
405 
406  /// Structure used to represent pair of argument number after call lowering
407  /// and register used to transfer that argument.
408  /// For now we support only cases when argument is transferred through one
409  /// register.
410  struct ArgRegPair {
413  ArgRegPair(Register R, unsigned Arg) : Reg(R), ArgNo(Arg) {
414  assert(Arg < (1 << 16) && "Arg out of range");
415  }
416  };
417  /// Vector of call argument and its forwarding register.
420 
421 private:
422  Delegate *TheDelegate = nullptr;
423  GISelChangeObserver *Observer = nullptr;
424 
426  /// Map a call instruction to call site arguments forwarding info.
427  CallSiteInfoMap CallSitesInfo;
428 
429  /// A helper function that returns call site info for a give call
430  /// instruction if debug entry value support is enabled.
431  CallSiteInfoMap::iterator getCallSiteInfo(const MachineInstr *MI);
432 
433  // Callbacks for insertion and removal.
434  void handleInsertion(MachineInstr &MI);
435  void handleRemoval(MachineInstr &MI);
436  friend struct ilist_traits<MachineInstr>;
437 
438 public:
441 
442  /// A count of how many instructions in the function have had numbers
443  /// assigned to them. Used for debug value tracking, to determine the
444  /// next instruction number.
445  unsigned DebugInstrNumberingCount = 0;
446 
447  /// Set value of DebugInstrNumberingCount field. Avoid using this unless
448  /// you're deserializing this data.
449  void setDebugInstrNumberingCount(unsigned Num);
450 
451  /// Pair of instruction number and operand number.
452  using DebugInstrOperandPair = std::pair<unsigned, unsigned>;
453 
454  /// Replacement definition for a debug instruction reference. Made up of a
455  /// source instruction / operand pair, destination pair, and a qualifying
456  /// subregister indicating what bits in the operand make up the substitution.
457  // For example, a debug user
458  /// of %1:
459  /// %0:gr32 = someinst, debug-instr-number 1
460  /// %1:gr16 = %0.some_16_bit_subreg, debug-instr-number 2
461  /// Would receive the substitution {{2, 0}, {1, 0}, $subreg}, where $subreg is
462  /// the subregister number for some_16_bit_subreg.
464  public:
465  DebugInstrOperandPair Src; ///< Source instruction / operand pair.
466  DebugInstrOperandPair Dest; ///< Replacement instruction / operand pair.
467  unsigned Subreg; ///< Qualifier for which part of Dest is read.
468 
470  const DebugInstrOperandPair &Dest, unsigned Subreg)
471  : Src(Src), Dest(Dest), Subreg(Subreg) {}
472 
473  /// Order only by source instruction / operand pair: there should never
474  /// be duplicate entries for the same source in any collection.
475  bool operator<(const DebugSubstitution &Other) const {
476  return Src < Other.Src;
477  }
478  };
479 
480  /// Debug value substitutions: a collection of DebugSubstitution objects,
481  /// recording changes in where a value is defined. For example, when one
482  /// instruction is substituted for another. Keeping a record allows recovery
483  /// of variable locations after compilation finishes.
485 
486  /// Location of a PHI instruction that is also a debug-info variable value,
487  /// for the duration of register allocation. Loaded by the PHI-elimination
488  /// pass, and emitted as DBG_PHI instructions during VirtRegRewriter, with
489  /// maintenance applied by intermediate passes that edit registers (such as
490  /// coalescing and the allocator passes).
492  public:
493  MachineBasicBlock *MBB; ///< Block where this PHI was originally located.
494  Register Reg; ///< VReg where the control-flow-merge happens.
495  unsigned SubReg; ///< Optional subreg qualifier within Reg.
497  : MBB(MBB), Reg(Reg), SubReg(SubReg) {}
498  };
499 
500  /// Map of debug instruction numbers to the position of their PHI instructions
501  /// during register allocation. See DebugPHIRegallocPos.
503 
504  /// Create a substitution between one <instr,operand> value to a different,
505  /// new value.
506  void makeDebugValueSubstitution(DebugInstrOperandPair, DebugInstrOperandPair,
507  unsigned SubReg = 0);
508 
509  /// Create substitutions for any tracked values in \p Old, to point at
510  /// \p New. Needed when we re-create an instruction during optimization,
511  /// which has the same signature (i.e., def operands in the same place) but
512  /// a modified instruction type, flags, or otherwise. An example: X86 moves
513  /// are sometimes transformed into equivalent LEAs.
514  /// If the two instructions are not the same opcode, limit which operands to
515  /// examine for substitutions to the first N operands by setting
516  /// \p MaxOperand.
517  void substituteDebugValuesForInst(const MachineInstr &Old, MachineInstr &New,
518  unsigned MaxOperand = UINT_MAX);
519 
520  /// Find the underlying defining instruction / operand for a COPY instruction
521  /// while in SSA form. Copies do not actually define values -- they move them
522  /// between registers. Labelling a COPY-like instruction with an instruction
523  /// number is to be avoided as it makes value numbers non-unique later in
524  /// compilation. This method follows the definition chain for any sequence of
525  /// COPY-like instructions to find whatever non-COPY-like instruction defines
526  /// the copied value; or for parameters, creates a DBG_PHI on entry.
527  /// May insert instructions into the entry block!
528  /// \p MI The copy-like instruction to salvage.
529  /// \returns An instruction/operand pair identifying the defining value.
530  DebugInstrOperandPair salvageCopySSA(MachineInstr &MI);
531 
532  /// Finalise any partially emitted debug instructions. These are DBG_INSTR_REF
533  /// instructions where we only knew the vreg of the value they use, not the
534  /// instruction that defines that vreg. Once isel finishes, we should have
535  /// enough information for every DBG_INSTR_REF to point at an instruction
536  /// (or DBG_PHI).
537  void finalizeDebugInstrRefs();
538 
539  /// Returns true if the function's variable locations should be tracked with
540  /// instruction referencing.
541  bool useDebugInstrRef() const;
542 
544  const TargetSubtargetInfo &STI, unsigned FunctionNum,
545  MachineModuleInfo &MMI);
546  MachineFunction(const MachineFunction &) = delete;
547  MachineFunction &operator=(const MachineFunction &) = delete;
548  ~MachineFunction();
549 
550  /// Reset the instance as if it was just created.
551  void reset() {
552  clear();
553  init();
554  }
555 
556  /// Reset the currently registered delegate - otherwise assert.
557  void resetDelegate(Delegate *delegate) {
558  assert(TheDelegate == delegate &&
559  "Only the current delegate can perform reset!");
560  TheDelegate = nullptr;
561  }
562 
563  /// Set the delegate. resetDelegate must be called before attempting
564  /// to set.
565  void setDelegate(Delegate *delegate) {
566  assert(delegate && !TheDelegate &&
567  "Attempted to set delegate to null, or to change it without "
568  "first resetting it!");
569 
570  TheDelegate = delegate;
571  }
572 
573  void setObserver(GISelChangeObserver *O) { Observer = O; }
574 
575  GISelChangeObserver *getObserver() const { return Observer; }
576 
577  MachineModuleInfo &getMMI() const { return MMI; }
578  MCContext &getContext() const { return Ctx; }
579 
580  /// Returns the Section this function belongs to.
581  MCSection *getSection() const { return Section; }
582 
583  /// Indicates the Section this function belongs to.
585 
586  PseudoSourceValueManager &getPSVManager() const { return *PSVManager; }
587 
588  /// Return the DataLayout attached to the Module associated to this MF.
589  const DataLayout &getDataLayout() const;
590 
591  /// Return the LLVM function that this machine code represents
592  Function &getFunction() { return F; }
593 
594  /// Return the LLVM function that this machine code represents
595  const Function &getFunction() const { return F; }
596 
597  /// getName - Return the name of the corresponding LLVM function.
598  StringRef getName() const;
599 
600  /// getFunctionNumber - Return a unique ID for the current function.
601  unsigned getFunctionNumber() const { return FunctionNumber; }
602 
603  /// Returns true if this function has basic block sections enabled.
604  bool hasBBSections() const {
605  return (BBSectionsType == BasicBlockSection::All ||
606  BBSectionsType == BasicBlockSection::List ||
607  BBSectionsType == BasicBlockSection::Preset);
608  }
609 
610  /// Returns true if basic block labels are to be generated for this function.
611  bool hasBBLabels() const {
612  return BBSectionsType == BasicBlockSection::Labels;
613  }
614 
615  void setBBSectionsType(BasicBlockSection V) { BBSectionsType = V; }
616 
617  /// Assign IsBeginSection IsEndSection fields for basic blocks in this
618  /// function.
619  void assignBeginEndSections();
620 
621  /// getTarget - Return the target machine this machine code is compiled with
622  const LLVMTargetMachine &getTarget() const { return Target; }
623 
624  /// getSubtarget - Return the subtarget for which this machine code is being
625  /// compiled.
626  const TargetSubtargetInfo &getSubtarget() const { return *STI; }
627 
628  /// getSubtarget - This method returns a pointer to the specified type of
629  /// TargetSubtargetInfo. In debug builds, it verifies that the object being
630  /// returned is of the correct type.
631  template<typename STC> const STC &getSubtarget() const {
632  return *static_cast<const STC *>(STI);
633  }
634 
635  /// getRegInfo - Return information about the registers currently in use.
637  const MachineRegisterInfo &getRegInfo() const { return *RegInfo; }
638 
639  /// getFrameInfo - Return the frame info object for the current function.
640  /// This object contains information about objects allocated on the stack
641  /// frame of the current function in an abstract way.
642  MachineFrameInfo &getFrameInfo() { return *FrameInfo; }
643  const MachineFrameInfo &getFrameInfo() const { return *FrameInfo; }
644 
645  /// getJumpTableInfo - Return the jump table info object for the current
646  /// function. This object contains information about jump tables in the
647  /// current function. If the current function has no jump tables, this will
648  /// return null.
649  const MachineJumpTableInfo *getJumpTableInfo() const { return JumpTableInfo; }
650  MachineJumpTableInfo *getJumpTableInfo() { return JumpTableInfo; }
651 
652  /// getOrCreateJumpTableInfo - Get the JumpTableInfo for this function, if it
653  /// does already exist, allocate one.
654  MachineJumpTableInfo *getOrCreateJumpTableInfo(unsigned JTEntryKind);
655 
656  /// getConstantPool - Return the constant pool object for the current
657  /// function.
660 
661  /// getWasmEHFuncInfo - Return information about how the current function uses
662  /// Wasm exception handling. Returns null for functions that don't use wasm
663  /// exception handling.
664  const WasmEHFuncInfo *getWasmEHFuncInfo() const { return WasmEHInfo; }
665  WasmEHFuncInfo *getWasmEHFuncInfo() { return WasmEHInfo; }
666 
667  /// getWinEHFuncInfo - Return information about how the current function uses
668  /// Windows exception handling. Returns null for functions that don't use
669  /// funclets for exception handling.
670  const WinEHFuncInfo *getWinEHFuncInfo() const { return WinEHInfo; }
671  WinEHFuncInfo *getWinEHFuncInfo() { return WinEHInfo; }
672 
673  /// getAlignment - Return the alignment of the function.
674  Align getAlignment() const { return Alignment; }
675 
676  /// setAlignment - Set the alignment of the function.
677  void setAlignment(Align A) { Alignment = A; }
678 
679  /// ensureAlignment - Make sure the function is at least A bytes aligned.
681  if (Alignment < A)
682  Alignment = A;
683  }
684 
685  /// exposesReturnsTwice - Returns true if the function calls setjmp or
686  /// any other similar functions with attribute "returns twice" without
687  /// having the attribute itself.
688  bool exposesReturnsTwice() const {
689  return ExposesReturnsTwice;
690  }
691 
692  /// setCallsSetJmp - Set a flag that indicates if there's a call to
693  /// a "returns twice" function.
695  ExposesReturnsTwice = B;
696  }
697 
698  /// Returns true if the function contains any inline assembly.
699  bool hasInlineAsm() const {
700  return HasInlineAsm;
701  }
702 
703  /// Set a flag that indicates that the function contains inline assembly.
704  void setHasInlineAsm(bool B) {
705  HasInlineAsm = B;
706  }
707 
708  bool hasWinCFI() const {
709  return HasWinCFI;
710  }
711  void setHasWinCFI(bool v) { HasWinCFI = v; }
712 
713  /// True if this function needs frame moves for debug or exceptions.
714  bool needsFrameMoves() const;
715 
716  /// Get the function properties
717  const MachineFunctionProperties &getProperties() const { return Properties; }
718  MachineFunctionProperties &getProperties() { return Properties; }
719 
720  /// getInfo - Keep track of various per-function pieces of information for
721  /// backends that would like to do so.
722  ///
723  template<typename Ty>
724  Ty *getInfo() {
725  if (!MFInfo)
726  MFInfo = Ty::template create<Ty>(Allocator, *this);
727  return static_cast<Ty*>(MFInfo);
728  }
729 
730  template<typename Ty>
731  const Ty *getInfo() const {
732  return const_cast<MachineFunction*>(this)->getInfo<Ty>();
733  }
734 
735  /// Returns the denormal handling type for the default rounding mode of the
736  /// function.
737  DenormalMode getDenormalMode(const fltSemantics &FPType) const;
738 
739  /// getBlockNumbered - MachineBasicBlocks are automatically numbered when they
740  /// are inserted into the machine function. The block number for a machine
741  /// basic block can be found by using the MBB::getNumber method, this method
742  /// provides the inverse mapping.
744  assert(N < MBBNumbering.size() && "Illegal block number");
745  assert(MBBNumbering[N] && "Block was removed from the machine function!");
746  return MBBNumbering[N];
747  }
748 
749  /// Should we be emitting segmented stack stuff for the function
750  bool shouldSplitStack() const;
751 
752  /// getNumBlockIDs - Return the number of MBB ID's allocated.
753  unsigned getNumBlockIDs() const { return (unsigned)MBBNumbering.size(); }
754 
755  /// RenumberBlocks - This discards all of the MachineBasicBlock numbers and
756  /// recomputes them. This guarantees that the MBB numbers are sequential,
757  /// dense, and match the ordering of the blocks within the function. If a
758  /// specific MachineBasicBlock is specified, only that block and those after
759  /// it are renumbered.
760  void RenumberBlocks(MachineBasicBlock *MBBFrom = nullptr);
761 
762  /// print - Print out the MachineFunction in a format suitable for debugging
763  /// to the specified stream.
764  void print(raw_ostream &OS, const SlotIndexes* = nullptr) const;
765 
766  /// viewCFG - This function is meant for use from the debugger. You can just
767  /// say 'call F->viewCFG()' and a ghostview window should pop up from the
768  /// program, displaying the CFG of the current function with the code for each
769  /// basic block inside. This depends on there being a 'dot' and 'gv' program
770  /// in your path.
771  void viewCFG() const;
772 
773  /// viewCFGOnly - This function is meant for use from the debugger. It works
774  /// just like viewCFG, but it does not include the contents of basic blocks
775  /// into the nodes, just the label. If you are only interested in the CFG
776  /// this can make the graph smaller.
777  ///
778  void viewCFGOnly() const;
779 
780  /// dump - Print the current MachineFunction to cerr, useful for debugger use.
781  void dump() const;
782 
783  /// Run the current MachineFunction through the machine code verifier, useful
784  /// for debugger use.
785  /// \returns true if no problems were found.
786  bool verify(Pass *p = nullptr, const char *Banner = nullptr,
787  bool AbortOnError = true) const;
788 
789  // Provide accessors for the MachineBasicBlock list...
794 
795  /// Support for MachineBasicBlock::getNextNode().
798  return &MachineFunction::BasicBlocks;
799  }
800 
801  /// addLiveIn - Add the specified physical register as a live-in value and
802  /// create a corresponding virtual register for it.
804 
805  //===--------------------------------------------------------------------===//
806  // BasicBlock accessor functions.
807  //
808  iterator begin() { return BasicBlocks.begin(); }
809  const_iterator begin() const { return BasicBlocks.begin(); }
810  iterator end () { return BasicBlocks.end(); }
811  const_iterator end () const { return BasicBlocks.end(); }
812 
813  reverse_iterator rbegin() { return BasicBlocks.rbegin(); }
814  const_reverse_iterator rbegin() const { return BasicBlocks.rbegin(); }
815  reverse_iterator rend () { return BasicBlocks.rend(); }
816  const_reverse_iterator rend () const { return BasicBlocks.rend(); }
817 
818  unsigned size() const { return (unsigned)BasicBlocks.size();}
819  bool empty() const { return BasicBlocks.empty(); }
820  const MachineBasicBlock &front() const { return BasicBlocks.front(); }
821  MachineBasicBlock &front() { return BasicBlocks.front(); }
822  const MachineBasicBlock & back() const { return BasicBlocks.back(); }
823  MachineBasicBlock & back() { return BasicBlocks.back(); }
824 
825  void push_back (MachineBasicBlock *MBB) { BasicBlocks.push_back (MBB); }
826  void push_front(MachineBasicBlock *MBB) { BasicBlocks.push_front(MBB); }
828  BasicBlocks.insert(MBBI, MBB);
829  }
830  void splice(iterator InsertPt, iterator MBBI) {
831  BasicBlocks.splice(InsertPt, BasicBlocks, MBBI);
832  }
834  BasicBlocks.splice(InsertPt, BasicBlocks, MBB);
835  }
836  void splice(iterator InsertPt, iterator MBBI, iterator MBBE) {
837  BasicBlocks.splice(InsertPt, BasicBlocks, MBBI, MBBE);
838  }
839 
840  void remove(iterator MBBI) { BasicBlocks.remove(MBBI); }
841  void remove(MachineBasicBlock *MBBI) { BasicBlocks.remove(MBBI); }
842  void erase(iterator MBBI) { BasicBlocks.erase(MBBI); }
843  void erase(MachineBasicBlock *MBBI) { BasicBlocks.erase(MBBI); }
844 
845  template <typename Comp>
846  void sort(Comp comp) {
847  BasicBlocks.sort(comp);
848  }
849 
850  /// Return the number of \p MachineInstrs in this \p MachineFunction.
851  unsigned getInstructionCount() const {
852  unsigned InstrCount = 0;
853  for (const MachineBasicBlock &MBB : BasicBlocks)
854  InstrCount += MBB.size();
855  return InstrCount;
856  }
857 
858  //===--------------------------------------------------------------------===//
859  // Internal functions used to automatically number MachineBasicBlocks
860 
861  /// Adds the MBB to the internal numbering. Returns the unique number
862  /// assigned to the MBB.
864  MBBNumbering.push_back(MBB);
865  return (unsigned)MBBNumbering.size()-1;
866  }
867 
868  /// removeFromMBBNumbering - Remove the specific machine basic block from our
869  /// tracker, this is only really to be used by the MachineBasicBlock
870  /// implementation.
871  void removeFromMBBNumbering(unsigned N) {
872  assert(N < MBBNumbering.size() && "Illegal basic block #");
873  MBBNumbering[N] = nullptr;
874  }
875 
876  /// CreateMachineInstr - Allocate a new MachineInstr. Use this instead
877  /// of `new MachineInstr'.
878  MachineInstr *CreateMachineInstr(const MCInstrDesc &MCID, const DebugLoc &DL,
879  bool NoImplicit = false);
880 
881  /// Create a new MachineInstr which is a copy of \p Orig, identical in all
882  /// ways except the instruction has no parent, prev, or next. Bundling flags
883  /// are reset.
884  ///
885  /// Note: Clones a single instruction, not whole instruction bundles.
886  /// Does not perform target specific adjustments; consider using
887  /// TargetInstrInfo::duplicate() instead.
888  MachineInstr *CloneMachineInstr(const MachineInstr *Orig);
889 
890  /// Clones instruction or the whole instruction bundle \p Orig and insert
891  /// into \p MBB before \p InsertBefore.
892  ///
893  /// Note: Does not perform target specific adjustments; consider using
894  /// TargetInstrInfo::duplicate() intead.
895  MachineInstr &CloneMachineInstrBundle(MachineBasicBlock &MBB,
896  MachineBasicBlock::iterator InsertBefore, const MachineInstr &Orig);
897 
898  /// DeleteMachineInstr - Delete the given MachineInstr.
899  void DeleteMachineInstr(MachineInstr *MI);
900 
901  /// CreateMachineBasicBlock - Allocate a new MachineBasicBlock. Use this
902  /// instead of `new MachineBasicBlock'.
903  MachineBasicBlock *CreateMachineBasicBlock(const BasicBlock *bb = nullptr);
904 
905  /// DeleteMachineBasicBlock - Delete the given MachineBasicBlock.
906  void DeleteMachineBasicBlock(MachineBasicBlock *MBB);
907 
908  /// getMachineMemOperand - Allocate a new MachineMemOperand.
909  /// MachineMemOperands are owned by the MachineFunction and need not be
910  /// explicitly deallocated.
913  Align base_alignment, const AAMDNodes &AAInfo = AAMDNodes(),
914  const MDNode *Ranges = nullptr, SyncScope::ID SSID = SyncScope::System,
916  AtomicOrdering FailureOrdering = AtomicOrdering::NotAtomic);
917 
920  Align base_alignment, const AAMDNodes &AAInfo = AAMDNodes(),
921  const MDNode *Ranges = nullptr, SyncScope::ID SSID = SyncScope::System,
923  AtomicOrdering FailureOrdering = AtomicOrdering::NotAtomic);
924 
925  /// getMachineMemOperand - Allocate a new MachineMemOperand by copying
926  /// an existing one, adjusting by an offset and using the given size.
927  /// MachineMemOperands are owned by the MachineFunction and need not be
928  /// explicitly deallocated.
930  int64_t Offset, LLT Ty);
932  int64_t Offset, uint64_t Size) {
933  return getMachineMemOperand(MMO, Offset, LLT::scalar(8 * Size));
934  }
935 
936  /// getMachineMemOperand - Allocate a new MachineMemOperand by copying
937  /// an existing one, replacing only the MachinePointerInfo and size.
938  /// MachineMemOperands are owned by the MachineFunction and need not be
939  /// explicitly deallocated.
941  const MachinePointerInfo &PtrInfo,
942  uint64_t Size);
944  const MachinePointerInfo &PtrInfo,
945  LLT Ty);
946 
947  /// Allocate a new MachineMemOperand by copying an existing one,
948  /// replacing only AliasAnalysis information. MachineMemOperands are owned
949  /// by the MachineFunction and need not be explicitly deallocated.
951  const AAMDNodes &AAInfo);
952 
953  /// Allocate a new MachineMemOperand by copying an existing one,
954  /// replacing the flags. MachineMemOperands are owned
955  /// by the MachineFunction and need not be explicitly deallocated.
958 
960 
961  /// Allocate an array of MachineOperands. This is only intended for use by
962  /// internal MachineInstr functions.
964  return OperandRecycler.allocate(Cap, Allocator);
965  }
966 
967  /// Dellocate an array of MachineOperands and recycle the memory. This is
968  /// only intended for use by internal MachineInstr functions.
969  /// Cap must be the same capacity that was used to allocate the array.
971  OperandRecycler.deallocate(Cap, Array);
972  }
973 
974  /// Allocate and initialize a register mask with @p NumRegister bits.
975  uint32_t *allocateRegMask();
976 
977  ArrayRef<int> allocateShuffleMask(ArrayRef<int> Mask);
978 
979  /// Allocate and construct an extra info structure for a `MachineInstr`.
980  ///
981  /// This is allocated on the function's allocator and so lives the life of
982  /// the function.
983  MachineInstr::ExtraInfo *createMIExtraInfo(
984  ArrayRef<MachineMemOperand *> MMOs, MCSymbol *PreInstrSymbol = nullptr,
985  MCSymbol *PostInstrSymbol = nullptr, MDNode *HeapAllocMarker = nullptr);
986 
987  /// Allocate a string and populate it with the given external symbol name.
988  const char *createExternalSymbolName(StringRef Name);
989 
990  //===--------------------------------------------------------------------===//
991  // Label Manipulation.
992 
993  /// getJTISymbol - Return the MCSymbol for the specified non-empty jump table.
994  /// If isLinkerPrivate is specified, an 'l' label is returned, otherwise a
995  /// normal 'L' label is returned.
996  MCSymbol *getJTISymbol(unsigned JTI, MCContext &Ctx,
997  bool isLinkerPrivate = false) const;
998 
999  /// getPICBaseSymbol - Return a function-local symbol to represent the PIC
1000  /// base.
1001  MCSymbol *getPICBaseSymbol() const;
1002 
1003  /// Returns a reference to a list of cfi instructions in the function's
1004  /// prologue. Used to construct frame maps for debug and exception handling
1005  /// comsumers.
1006  const std::vector<MCCFIInstruction> &getFrameInstructions() const {
1007  return FrameInstructions;
1008  }
1009 
1010  LLVM_NODISCARD unsigned addFrameInst(const MCCFIInstruction &Inst);
1011 
1012  /// Returns a reference to a list of symbols immediately following calls to
1013  /// _setjmp in the function. Used to construct the longjmp target table used
1014  /// by Windows Control Flow Guard.
1015  const std::vector<MCSymbol *> &getLongjmpTargets() const {
1016  return LongjmpTargets;
1017  }
1018 
1019  /// Add the specified symbol to the list of valid longjmp targets for Windows
1020  /// Control Flow Guard.
1021  void addLongjmpTarget(MCSymbol *Target) { LongjmpTargets.push_back(Target); }
1022 
1023  /// Returns a reference to a list of symbols that we have catchrets.
1024  /// Used to construct the catchret target table used by Windows EHCont Guard.
1025  const std::vector<MCSymbol *> &getCatchretTargets() const {
1026  return CatchretTargets;
1027  }
1028 
1029  /// Add the specified symbol to the list of valid catchret targets for Windows
1030  /// EHCont Guard.
1032  CatchretTargets.push_back(Target);
1033  }
1034 
1035  /// \name Exception Handling
1036  /// \{
1037 
1038  bool callsEHReturn() const { return CallsEHReturn; }
1039  void setCallsEHReturn(bool b) { CallsEHReturn = b; }
1040 
1041  bool callsUnwindInit() const { return CallsUnwindInit; }
1042  void setCallsUnwindInit(bool b) { CallsUnwindInit = b; }
1043 
1044  bool hasEHCatchret() const { return HasEHCatchret; }
1045  void setHasEHCatchret(bool V) { HasEHCatchret = V; }
1046 
1047  bool hasEHScopes() const { return HasEHScopes; }
1048  void setHasEHScopes(bool V) { HasEHScopes = V; }
1049 
1050  bool hasEHFunclets() const { return HasEHFunclets; }
1051  void setHasEHFunclets(bool V) { HasEHFunclets = V; }
1052 
1053  /// Find or create an LandingPadInfo for the specified MachineBasicBlock.
1054  LandingPadInfo &getOrCreateLandingPadInfo(MachineBasicBlock *LandingPad);
1055 
1056  /// Remap landing pad labels and remove any deleted landing pads.
1057  void tidyLandingPads(DenseMap<MCSymbol *, uintptr_t> *LPMap = nullptr,
1058  bool TidyIfNoBeginLabels = true);
1059 
1060  /// Return a reference to the landing pad info for the current function.
1061  const std::vector<LandingPadInfo> &getLandingPads() const {
1062  return LandingPads;
1063  }
1064 
1065  /// Provide the begin and end labels of an invoke style call and associate it
1066  /// with a try landing pad block.
1067  void addInvoke(MachineBasicBlock *LandingPad,
1068  MCSymbol *BeginLabel, MCSymbol *EndLabel);
1069 
1070  /// Add a new panding pad, and extract the exception handling information from
1071  /// the landingpad instruction. Returns the label ID for the landing pad
1072  /// entry.
1073  MCSymbol *addLandingPad(MachineBasicBlock *LandingPad);
1074 
1075  /// Provide the catch typeinfo for a landing pad.
1076  void addCatchTypeInfo(MachineBasicBlock *LandingPad,
1078 
1079  /// Provide the filter typeinfo for a landing pad.
1080  void addFilterTypeInfo(MachineBasicBlock *LandingPad,
1082 
1083  /// Add a cleanup action for a landing pad.
1084  void addCleanup(MachineBasicBlock *LandingPad);
1085 
1086  void addSEHCatchHandler(MachineBasicBlock *LandingPad, const Function *Filter,
1087  const BlockAddress *RecoverBA);
1088 
1089  void addSEHCleanupHandler(MachineBasicBlock *LandingPad,
1090  const Function *Cleanup);
1091 
1092  /// Return the type id for the specified typeinfo. This is function wide.
1093  unsigned getTypeIDFor(const GlobalValue *TI);
1094 
1095  /// Return the id of the filter encoded by TyIds. This is function wide.
1096  int getFilterIDFor(std::vector<unsigned> &TyIds);
1097 
1098  /// Map the landing pad's EH symbol to the call site indexes.
1099  void setCallSiteLandingPad(MCSymbol *Sym, ArrayRef<unsigned> Sites);
1100 
1101  /// Map the landing pad to its index. Used for Wasm exception handling.
1102  void setWasmLandingPadIndex(const MachineBasicBlock *LPad, unsigned Index) {
1103  WasmLPadToIndexMap[LPad] = Index;
1104  }
1105 
1106  /// Returns true if the landing pad has an associate index in wasm EH.
1107  bool hasWasmLandingPadIndex(const MachineBasicBlock *LPad) const {
1108  return WasmLPadToIndexMap.count(LPad);
1109  }
1110 
1111  /// Get the index in wasm EH for a given landing pad.
1112  unsigned getWasmLandingPadIndex(const MachineBasicBlock *LPad) const {
1113  assert(hasWasmLandingPadIndex(LPad));
1114  return WasmLPadToIndexMap.lookup(LPad);
1115  }
1116 
1117  /// Get the call site indexes for a landing pad EH symbol.
1119  assert(hasCallSiteLandingPad(Sym) &&
1120  "missing call site number for landing pad!");
1121  return LPadToCallSiteMap[Sym];
1122  }
1123 
1124  /// Return true if the landing pad Eh symbol has an associated call site.
1126  return !LPadToCallSiteMap[Sym].empty();
1127  }
1128 
1129  /// Map the begin label for a call site.
1130  void setCallSiteBeginLabel(MCSymbol *BeginLabel, unsigned Site) {
1131  CallSiteMap[BeginLabel] = Site;
1132  }
1133 
1134  /// Get the call site number for a begin label.
1135  unsigned getCallSiteBeginLabel(MCSymbol *BeginLabel) const {
1136  assert(hasCallSiteBeginLabel(BeginLabel) &&
1137  "Missing call site number for EH_LABEL!");
1138  return CallSiteMap.lookup(BeginLabel);
1139  }
1140 
1141  /// Return true if the begin label has a call site number associated with it.
1142  bool hasCallSiteBeginLabel(MCSymbol *BeginLabel) const {
1143  return CallSiteMap.count(BeginLabel);
1144  }
1145 
1146  /// Record annotations associated with a particular label.
1148  CodeViewAnnotations.push_back({Label, MD});
1149  }
1150 
1152  return CodeViewAnnotations;
1153  }
1154 
1155  /// Return a reference to the C++ typeinfo for the current function.
1156  const std::vector<const GlobalValue *> &getTypeInfos() const {
1157  return TypeInfos;
1158  }
1159 
1160  /// Return a reference to the typeids encoding filters used in the current
1161  /// function.
1162  const std::vector<unsigned> &getFilterIds() const {
1163  return FilterIds;
1164  }
1165 
1166  /// \}
1167 
1168  /// Collect information used to emit debugging information of a variable.
1169  void setVariableDbgInfo(const DILocalVariable *Var, const DIExpression *Expr,
1170  int Slot, const DILocation *Loc) {
1171  VariableDbgInfos.emplace_back(Var, Expr, Slot, Loc);
1172  }
1173 
1174  VariableDbgInfoMapTy &getVariableDbgInfo() { return VariableDbgInfos; }
1176  return VariableDbgInfos;
1177  }
1178 
1179  /// Start tracking the arguments passed to the call \p CallI.
1183  bool Inserted =
1184  CallSitesInfo.try_emplace(CallI, std::move(CallInfo)).second;
1185  (void)Inserted;
1186  assert(Inserted && "Call site info not unique");
1187  }
1188 
1190  return CallSitesInfo;
1191  }
1192 
1193  /// Following functions update call site info. They should be called before
1194  /// removing, replacing or copying call instruction.
1195 
1196  /// Erase the call site info for \p MI. It is used to remove a call
1197  /// instruction from the instruction stream.
1198  void eraseCallSiteInfo(const MachineInstr *MI);
1199  /// Copy the call site info from \p Old to \ New. Its usage is when we are
1200  /// making a copy of the instruction that will be inserted at different point
1201  /// of the instruction stream.
1202  void copyCallSiteInfo(const MachineInstr *Old,
1203  const MachineInstr *New);
1204 
1205  const std::vector<char> &getBBSectionsSymbolPrefix() const {
1206  return BBSectionsSymbolPrefix;
1207  }
1208 
1209  /// Move the call site info from \p Old to \New call site info. This function
1210  /// is used when we are replacing one call instruction with another one to
1211  /// the same callee.
1212  void moveCallSiteInfo(const MachineInstr *Old,
1213  const MachineInstr *New);
1214 
1215  unsigned getNewDebugInstrNum() {
1216  return ++DebugInstrNumberingCount;
1217  }
1218 };
1219 
1220 //===--------------------------------------------------------------------===//
1221 // GraphTraits specializations for function basic block graphs (CFGs)
1222 //===--------------------------------------------------------------------===//
1223 
1224 // Provide specializations of GraphTraits to be able to treat a
1225 // machine function as a graph of machine basic blocks... these are
1226 // the same as the machine basic block iterators, except that the root
1227 // node is implicitly the first node of the function.
1228 //
1229 template <> struct GraphTraits<MachineFunction*> :
1231  static NodeRef getEntryNode(MachineFunction *F) { return &F->front(); }
1232 
1233  // nodes_iterator/begin/end - Allow iteration over all nodes in the graph
1235 
1237  return nodes_iterator(F->begin());
1238  }
1239 
1241  return nodes_iterator(F->end());
1242  }
1243 
1244  static unsigned size (MachineFunction *F) { return F->size(); }
1245 };
1246 template <> struct GraphTraits<const MachineFunction*> :
1248  static NodeRef getEntryNode(const MachineFunction *F) { return &F->front(); }
1249 
1250  // nodes_iterator/begin/end - Allow iteration over all nodes in the graph
1252 
1254  return nodes_iterator(F->begin());
1255  }
1256 
1258  return nodes_iterator(F->end());
1259  }
1260 
1261  static unsigned size (const MachineFunction *F) {
1262  return F->size();
1263  }
1264 };
1265 
1266 // Provide specializations of GraphTraits to be able to treat a function as a
1267 // graph of basic blocks... and to walk it in inverse order. Inverse order for
1268 // a function is considered to be when traversing the predecessor edges of a BB
1269 // instead of the successor edges.
1270 //
1271 template <> struct GraphTraits<Inverse<MachineFunction*>> :
1274  return &G.Graph->front();
1275  }
1276 };
1277 template <> struct GraphTraits<Inverse<const MachineFunction*>> :
1280  return &G.Graph->front();
1281  }
1282 };
1283 
1284 class MachineFunctionAnalysisManager;
1285 void verifyMachineFunction(MachineFunctionAnalysisManager *,
1286  const std::string &Banner,
1287  const MachineFunction &MF);
1288 
1289 } // end namespace llvm
1290 
1291 #endif // LLVM_CODEGEN_MACHINEFUNCTION_H
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Definition: MachineFunction.h:840
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Definition: WasmEHFuncInfo.h:32
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---------------------— PointerInfo ------------------------------------—
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Definition: DenseMap.h:197
P
This currently compiles esp xmm0 movsd esp eax eax esp ret We should use not the dag combiner This is because dagcombine2 needs to be able to see through the X86ISD::Wrapper which DAGCombine can t really do The code for turning x load into a single vector load is target independent and should be moved to the dag combiner The code for turning x load into a vector load can only handle a direct load from a global or a direct load from the stack It should be generalized to handle any load from P
Definition: README-SSE.txt:411
llvm::BitVector::set
BitVector & set()
Definition: BitVector.h:343
llvm::MachineFunction::getSubtarget
const STC & getSubtarget() const
getSubtarget - This method returns a pointer to the specified type of TargetSubtargetInfo.
Definition: MachineFunction.h:631
llvm::Target
Target - Wrapper for Target specific information.
Definition: TargetRegistry.h:137
llvm::SmallVector
This is a 'vector' (really, a variable-sized array), optimized for the case when the array is small.
Definition: SmallVector.h:1168
ilist.h
llvm::MachineFunction::end
iterator end()
Definition: MachineFunction.h:810
llvm::MachineFunction::getObserver
GISelChangeObserver * getObserver() const
Definition: MachineFunction.h:575
llvm::LandingPadInfo::LandingPadLabel
MCSymbol * LandingPadLabel
Definition: MachineFunction.h:223
llvm::MachineFunction::splice
void splice(iterator InsertPt, MachineBasicBlock *MBB)
Definition: MachineFunction.h:833
llvm::LandingPadInfo::SEHHandlers
SmallVector< SEHHandler, 1 > SEHHandlers
Definition: MachineFunction.h:222
llvm::MachineFunction::exposesReturnsTwice
bool exposesReturnsTwice() const
exposesReturnsTwice - Returns true if the function calls setjmp or any other similar functions with a...
Definition: MachineFunction.h:688
viewCFG
static void viewCFG(Function &F, const BlockFrequencyInfo *BFI, const BranchProbabilityInfo *BPI, uint64_t MaxFreq, bool CFGOnly=false)
Definition: CFGPrinter.cpp:84
Allocator.h
llvm::MachineFunction::getFunctionNumber
unsigned getFunctionNumber() const
getFunctionNumber - Return a unique ID for the current function.
Definition: MachineFunction.h:601
llvm::MachineFunction::setCallsUnwindInit
void setCallsUnwindInit(bool b)
Definition: MachineFunction.h:1042
llvm::MachineFunction::back
const MachineBasicBlock & back() const
Definition: MachineFunction.h:822
MachineBasicBlock.h
llvm::MachineFunction::DebugSubstitution::Dest
DebugInstrOperandPair Dest
Replacement instruction / operand pair.
Definition: MachineFunction.h:466
llvm::ilist_callback_traits
Callbacks do nothing by default in iplist and ilist.
Definition: ilist.h:64
llvm::MachineFunction::getNumBlockIDs
unsigned getNumBlockIDs() const
getNumBlockIDs - Return the number of MBB ID's allocated.
Definition: MachineFunction.h:753
llvm::MachineFunction::ensureAlignment
void ensureAlignment(Align A)
ensureAlignment - Make sure the function is at least A bytes aligned.
Definition: MachineFunction.h:680
InstrCount
static unsigned InstrCount
Definition: DFAPacketizer.cpp:53
llvm::DILocation
Debug location.
Definition: DebugInfoMetadata.h:1580
llvm::AAMDNodes
A collection of metadata nodes that might be associated with a memory access used by the alias-analys...
Definition: Metadata.h:651
llvm::MachineFunction::push_front
void push_front(MachineBasicBlock *MBB)
Definition: MachineFunction.h:826
llvm::DenseMapIterator
Definition: DenseMap.h:56
llvm::MachineFunction::DebugSubstitution::Subreg
unsigned Subreg
Qualifier for which part of Dest is read.
Definition: MachineFunction.h:467
llvm::MachineFunction::getInstructionCount
unsigned getInstructionCount() const
Return the number of MachineInstrs in this MachineFunction.
Definition: MachineFunction.h:851
DenseMap.h
llvm::MachineFunction::getNewDebugInstrNum
unsigned getNewDebugInstrNum()
Definition: MachineFunction.h:1215
llvm::MachineMemOperand
A description of a memory reference used in the backend.
Definition: MachineMemOperand.h:128
EHPersonalities.h
llvm::MachineFunction::insert
void insert(iterator MBBI, MachineBasicBlock *MBB)
Definition: MachineFunction.h:827
llvm::MachineFunction::getPSVManager
PseudoSourceValueManager & getPSVManager() const
Definition: MachineFunction.h:586
llvm::MachineFunctionProperties::Property::IsSSA
@ IsSSA
llvm::AMDGPU::Exp::Target
Target
Definition: SIDefines.h:739
llvm::MachineFunctionProperties
Properties which a MachineFunction may have at a given point in time.
Definition: MachineFunction.h:111
llvm::DenseMapBase< DenseMap< KeyT, ValueT, DenseMapInfo< KeyT >, llvm::detail::DenseMapPair< KeyT, ValueT > >, KeyT, ValueT, DenseMapInfo< KeyT >, llvm::detail::DenseMapPair< KeyT, ValueT > >::count
size_type count(const_arg_type_t< KeyT > Val) const
Return 1 if the specified key is in the map, 0 otherwise.
Definition: DenseMap.h:145
llvm::MachineFunction::setDelegate
void setDelegate(Delegate *delegate)
Set the delegate.
Definition: MachineFunction.h:565
llvm::MachineFunction::callsUnwindInit
bool callsUnwindInit() const
Definition: MachineFunction.h:1041
llvm::MachineFunction::addCodeViewAnnotation
void addCodeViewAnnotation(MCSymbol *Label, MDNode *MD)
Record annotations associated with a particular label.
Definition: MachineFunction.h:1147
Offset
uint64_t Offset
Definition: ELFObjHandler.cpp:81
llvm::iplist_impl::remove
pointer remove(iterator &IT)
Definition: ilist.h:251
llvm::MachineFunction::hasCallSiteLandingPad
bool hasCallSiteLandingPad(MCSymbol *Sym)
Return true if the landing pad Eh symbol has an associated call site.
Definition: MachineFunction.h:1125
llvm::dump
void dump(const SparseBitVector< ElementSize > &LHS, raw_ostream &out)
Definition: SparseBitVector.h:876
llvm::MachineFunction::getFunction
const Function & getFunction() const
Return the LLVM function that this machine code represents.
Definition: MachineFunction.h:595
llvm::DIExpression
DWARF expression.
Definition: DebugInfoMetadata.h:2586
llvm::MachineFunction::setHasEHFunclets
void setHasEHFunclets(bool V)
Definition: MachineFunction.h:1051
llvm::MachineFunctionInfo::create
static Ty * create(BumpPtrAllocator &Allocator, MachineFunction &MF)
Factory function: default behavior is to call new using the supplied allocator.
Definition: MachineFunction.h:103
llvm::BitmaskEnumDetail::Mask
std::underlying_type_t< E > Mask()
Get a bitmask with 1s in all places up to the high-order bit of E's largest value.
Definition: BitmaskEnum.h:80
llvm::BasicBlockSection::List
@ List
llvm::BasicBlockSection::None
@ None
p
the resulting code requires compare and branches when and if * p
Definition: README.txt:396
llvm::iplist
An intrusive list with ownership and callbacks specified/controlled by ilist_traits,...
Definition: ilist.h:390
llvm::iplist_impl::splice
void splice(iterator where, iplist_impl &L2)
Definition: ilist.h:329
llvm::SEHHandler::FilterOrFinally
const Function * FilterOrFinally
Filter or finally function. Null indicates a catch-all.
Definition: MachineFunction.h:211
F
#define F(x, y, z)
Definition: MD5.cpp:56
llvm::MachineFunction::iterator
BasicBlockListType::iterator iterator
Definition: MachineFunction.h:790
llvm::iplist_impl::erase
iterator erase(iterator where)
Definition: ilist.h:267
llvm::MachineFunction::DebugSubstitution::DebugSubstitution
DebugSubstitution(const DebugInstrOperandPair &Src, const DebugInstrOperandPair &Dest, unsigned Subreg)
Definition: MachineFunction.h:469
llvm::MachineFunction::getFrameInstructions
const std::vector< MCCFIInstruction > & getFrameInstructions() const
Returns a reference to a list of cfi instructions in the function's prologue.
Definition: MachineFunction.h:1006
llvm::BasicBlock
LLVM Basic Block Representation.
Definition: BasicBlock.h:58
llvm::GraphTraits< MachineFunction * >::nodes_end
static nodes_iterator nodes_end(MachineFunction *F)
Definition: MachineFunction.h:1240
llvm::MachineFunction::setExposesReturnsTwice
void setExposesReturnsTwice(bool B)
setCallsSetJmp - Set a flag that indicates if there's a call to a "returns twice" function.
Definition: MachineFunction.h:694
GraphTraits.h
clear
static void clear(coro::Shape &Shape)
Definition: Coroutines.cpp:233
llvm::ARMBuildAttrs::Section
@ Section
Legacy Tags.
Definition: ARMBuildAttributes.h:78
llvm::MachineFunction::setWasmLandingPadIndex
void setWasmLandingPadIndex(const MachineBasicBlock *LPad, unsigned Index)
Map the landing pad to its index. Used for Wasm exception handling.
Definition: MachineFunction.h:1102
llvm::MachineFunction::rend
reverse_iterator rend()
Definition: MachineFunction.h:815
Arg
amdgpu Simplify well known AMD library false FunctionCallee Value * Arg
Definition: AMDGPULibCalls.cpp:206
llvm::MachineFunction::ArgRegPair::ArgNo
uint16_t ArgNo
Definition: MachineFunction.h:412
llvm::verifyMachineFunction
void verifyMachineFunction(MachineFunctionAnalysisManager *, const std::string &Banner, const MachineFunction &MF)
Definition: MachineVerifier.cpp:313
llvm::CallInfo
Definition: GVNHoist.cpp:217
llvm::GraphTraits< MachineFunction * >::nodes_begin
static nodes_iterator nodes_begin(MachineFunction *F)
Definition: MachineFunction.h:1236
llvm::MachineFunction::ArgRegPair
Structure used to represent pair of argument number after call lowering and register used to transfer...
Definition: MachineFunction.h:410
llvm::GraphTraits< const MachineFunction * >::nodes_end
static nodes_iterator nodes_end(const MachineFunction *F)
Definition: MachineFunction.h:1257
bb
< i1 > br i1 label label bb bb
Definition: README.txt:978
llvm::MachineFunction::front
const MachineBasicBlock & front() const
Definition: MachineFunction.h:820
llvm::MachineFunction::ArgRegPair::ArgRegPair
ArgRegPair(Register R, unsigned Arg)
Definition: MachineFunction.h:413
llvm::MachineFunction::getRegInfo
MachineRegisterInfo & getRegInfo()
getRegInfo - Return information about the registers currently in use.
Definition: MachineFunction.h:636
llvm::MachineFunction::setSection
void setSection(MCSection *S)
Indicates the Section this function belongs to.
Definition: MachineFunction.h:584
llvm::MachineFunctionProperties::Property::Selected
@ Selected
llvm::MachineFunction::VariableDbgInfo::Slot
int Slot
Definition: MachineFunction.h:387
llvm::LandingPadInfo::EndLabels
SmallVector< MCSymbol *, 1 > EndLabels
Definition: MachineFunction.h:221
llvm::iplist_impl::push_front
void push_front(pointer val)
Definition: ilist.h:312
llvm::DILocalVariable
Local variable.
Definition: DebugInfoMetadata.h:3097
f
Itanium Name Demangler i e convert the string _Z1fv into f()". You can also use the CRTP base ManglingParser to perform some simple analysis on the mangled name
llvm::MachineFunction::setAlignment
void setAlignment(Align A)
setAlignment - Set the alignment of the function.
Definition: MachineFunction.h:677
llvm::MachineFunction::getInfo
Ty * getInfo()
getInfo - Keep track of various per-function pieces of information for backends that would like to do...
Definition: MachineFunction.h:724
llvm::MachineFunction::getFilterIds
const std::vector< unsigned > & getFilterIds() const
Return a reference to the typeids encoding filters used in the current function.
Definition: MachineFunction.h:1162
llvm::MachineFunctionProperties::verifyRequiredProperties
bool verifyRequiredProperties(const MachineFunctionProperties &V) const
Definition: MachineFunction.h:197
llvm::GraphTraits< const MachineFunction * >::size
static unsigned size(const MachineFunction *F)
Definition: MachineFunction.h:1261
llvm::MachineFunction::setObserver
void setObserver(GISelChangeObserver *O)
Definition: MachineFunction.h:573
llvm::TargetRegisterClass
Definition: TargetRegisterInfo.h:46
llvm::MachineFunctionInfo::~MachineFunctionInfo
virtual ~MachineFunctionInfo()
llvm::MachineFunction::getCallSiteLandingPad
SmallVectorImpl< unsigned > & getCallSiteLandingPad(MCSymbol *Sym)
Get the call site indexes for a landing pad EH symbol.
Definition: MachineFunction.h:1118
b
the resulting code requires compare and branches when and if the revised code is with conditional branches instead of More there is a byte word extend before each where there should be only and the condition codes are not remembered when the same two values are compared twice More LSR enhancements i8 and i32 load store addressing modes are identical int b
Definition: README.txt:418
llvm::MachineFunction::hasBBLabels
bool hasBBLabels() const
Returns true if basic block labels are to be generated for this function.
Definition: MachineFunction.h:611
llvm::MachineFunction::getProperties
const MachineFunctionProperties & getProperties() const
Get the function properties.
Definition: MachineFunction.h:717
llvm::ArrayRecycler::deallocate
void deallocate(Capacity Cap, T *Ptr)
Deallocate an array with the specified Capacity.
Definition: ArrayRecycler.h:137
llvm::LandingPadInfo::TypeIds
std::vector< int > TypeIds
Definition: MachineFunction.h:224
llvm::MachineFunction::size
unsigned size() const
Definition: MachineFunction.h:818
llvm::MCInstrDesc
Describe properties that are true of each instruction in the target description file.
Definition: MCInstrDesc.h:195
B
static GCRegistry::Add< OcamlGC > B("ocaml", "ocaml 3.10-compatible GC")
llvm::MachineOperand
MachineOperand class - Representation of each machine instruction operand.
Definition: MachineOperand.h:49
getMachineMemOperand
static MachineMemOperand * getMachineMemOperand(MachineFunction &MF, FrameIndexSDNode &FI)
Definition: StatepointLowering.cpp:349
llvm::MachineFunction::rbegin
reverse_iterator rbegin()
Definition: MachineFunction.h:813
llvm::MachineFunctionProperties::set
MachineFunctionProperties & set(Property P)
Definition: MachineFunction.h:169
llvm::MachineFunction::getVariableDbgInfo
const VariableDbgInfoMapTy & getVariableDbgInfo() const
Definition: MachineFunction.h:1175
llvm::MachineFunction::hasEHCatchret
bool hasEHCatchret() const
Definition: MachineFunction.h:1044
llvm::BasicBlockSection::Labels
@ Labels
llvm::MachineModuleInfo
This class contains meta information specific to a module.
Definition: MachineModuleInfo.h:78
llvm::ilist_callback_traits< MachineBasicBlock >::transferNodesFromList
void transferNodesFromList(ilist_callback_traits &OldList, Iterator, Iterator)
Definition: MachineFunction.h:86
llvm::GraphTraits< Inverse< const MachineFunction * > >::getEntryNode
static NodeRef getEntryNode(Inverse< const MachineFunction * > G)
Definition: MachineFunction.h:1279
llvm::raw_ostream
This class implements an extremely fast bulk output stream that can only output to a stream.
Definition: raw_ostream.h:53
llvm::MachineFunction::addToMBBNumbering
unsigned addToMBBNumbering(MachineBasicBlock *MBB)
Adds the MBB to the internal numbering.
Definition: MachineFunction.h:863
llvm::MachineFunction::Delegate
Definition: MachineFunction.h:395
BitVector.h
llvm::MachineFunction::begin
iterator begin()
Definition: MachineFunction.h:808
llvm::SlotIndexes
SlotIndexes pass.
Definition: SlotIndexes.h:314
llvm::MachineFunction::setHasWinCFI
void setHasWinCFI(bool v)
Definition: MachineFunction.h:711
llvm::BitVector
Definition: BitVector.h:74
llvm::BasicBlockSection::All
@ All
llvm::MachineFunction::DebugPHIRegallocPos::DebugPHIRegallocPos
DebugPHIRegallocPos(MachineBasicBlock *MBB, Register Reg, unsigned SubReg)
Definition: MachineFunction.h:496
llvm::MachineFunction::getWasmEHFuncInfo
const WasmEHFuncInfo * getWasmEHFuncInfo() const
getWasmEHFuncInfo - Return information about how the current function uses Wasm exception handling.
Definition: MachineFunction.h:664
llvm::MachineFunction::sort
void sort(Comp comp)
Definition: MachineFunction.h:846
llvm::MachineFunction::removeFromMBBNumbering
void removeFromMBBNumbering(unsigned N)
removeFromMBBNumbering - Remove the specific machine basic block from our tracker,...
Definition: MachineFunction.h:871
llvm::Align
This struct is a compact representation of a valid (non-zero power of two) alignment.
Definition: Alignment.h:39
llvm::MCCFIInstruction
Definition: MCDwarf.h:434
llvm::MachineFunctionProperties::reset
MachineFunctionProperties & reset(const MachineFunctionProperties &MFP)
Definition: MachineFunction.h:190
llvm::MachineBasicBlock
Definition: MachineBasicBlock.h:95
llvm::GraphTraits< MachineFunction * >::getEntryNode
static NodeRef getEntryNode(MachineFunction *F)
Definition: MachineFunction.h:1231
llvm::MachineFunction::getConstantPool
const MachineConstantPool * getConstantPool() const
Definition: MachineFunction.h:659
llvm::MachineFunction::DebugSubstitution::Src
DebugInstrOperandPair Src
Source instruction / operand pair.
Definition: MachineFunction.h:465
llvm::MachineFunction::VariableDbgInfo::Expr
const DIExpression * Expr
Definition: MachineFunction.h:385
llvm::ilist_traits
Template traits for intrusive list.
Definition: ilist.h:89
llvm::MachineFunctionProperties::Property::NoVRegs
@ NoVRegs
llvm::MachineFunctionProperties::set
MachineFunctionProperties & set(const MachineFunctionProperties &MFP)
Definition: MachineFunction.h:185
llvm::ISD::BlockAddress
@ BlockAddress
Definition: ISDOpcodes.h:84
llvm::MachineFunction::getMMI
MachineModuleInfo & getMMI() const
Definition: MachineFunction.h:577
G
const DataFlowGraph & G
Definition: RDFGraph.cpp:202
llvm::MachineFunction::deallocateOperandArray
void deallocateOperandArray(OperandCapacity Cap, MachineOperand *Array)
Dellocate an array of MachineOperands and recycle the memory.
Definition: MachineFunction.h:970
llvm::MachineFunction::getSubtarget
const TargetSubtargetInfo & getSubtarget() const
getSubtarget - Return the subtarget for which this machine code is being compiled.
Definition: MachineFunction.h:626
llvm::pointer_iterator
Definition: iterator.h:320
llvm::AtomicOrdering
AtomicOrdering
Atomic ordering for LLVM's memory model.
Definition: AtomicOrdering.h:56
llvm::MachineFunction::setHasInlineAsm
void setHasInlineAsm(bool B)
Set a flag that indicates that the function contains inline assembly.
Definition: MachineFunction.h:704
llvm::MachineFunction::rend
const_reverse_iterator rend() const
Definition: MachineFunction.h:816
llvm::MachineFunction::push_back
void push_back(MachineBasicBlock *MBB)
Definition: MachineFunction.h:825
llvm::RISCVFenceField::O
@ O
Definition: RISCVBaseInfo.h:192
llvm::MachineFunction::setCallSiteBeginLabel
void setCallSiteBeginLabel(MCSymbol *BeginLabel, unsigned Site)
Map the begin label for a call site.
Definition: MachineFunction.h:1130
llvm::GlobalValue
Definition: GlobalValue.h:44
llvm::WinEHFuncInfo
Definition: WinEHFuncInfo.h:90
llvm::MachineFunction::addCallArgsForwardingRegs
void addCallArgsForwardingRegs(const MachineInstr *CallI, CallSiteInfoImpl &&CallInfo)
Start tracking the arguments passed to the call CallI.
Definition: MachineFunction.h:1180
llvm::LandingPadInfo::BeginLabels
SmallVector< MCSymbol *, 1 > BeginLabels
Definition: MachineFunction.h:220
llvm::MachineFunctionProperties::Property::TracksLiveness
@ TracksLiveness
Index
uint32_t Index
Definition: ELFObjHandler.cpp:84
llvm::MachineInstr
Representation of each machine instruction.
Definition: MachineInstr.h:64
llvm::MachineFunctionProperties::reset
MachineFunctionProperties & reset()
Reset all the properties.
Definition: MachineFunction.h:180
llvm::MachineFunction::callsEHReturn
bool callsEHReturn() const
Definition: MachineFunction.h:1038
uint64_t
llvm::MachineFunction::front
MachineBasicBlock & front()
Definition: MachineFunction.h:821
llvm::MachineFunction::setHasEHCatchret
void setHasEHCatchret(bool V)
Definition: MachineFunction.h:1045
const
aarch64 promote const
Definition: AArch64PromoteConstant.cpp:232
LLVM_EXTERNAL_VISIBILITY
#define LLVM_EXTERNAL_VISIBILITY
Definition: Compiler.h:132
llvm::BasicBlockSection::Preset
@ Preset
llvm::MachineFunction::back
MachineBasicBlock & back()
Definition: MachineFunction.h:823
s
multiplies can be turned into SHL s
Definition: README.txt:370
llvm::MachineFunction::splice
void splice(iterator InsertPt, iterator MBBI)
Definition: MachineFunction.h:830
llvm::BumpPtrAllocatorImpl
Allocate memory in an ever growing pool, as if by bump-pointer.
Definition: Allocator.h:67
llvm::MachinePointerInfo
This class contains a discriminated union of information about pointers in memory operands,...
Definition: MachineMemOperand.h:38
move
compiles ldr LCPI1_0 ldr ldr mov lsr tst moveq r1 ldr LCPI1_1 and r0 bx lr It would be better to do something like to fold the shift into the conditional move
Definition: README.txt:546
llvm::DenseMap
Definition: DenseMap.h:714
llvm::SyncScope::ID
uint8_t ID
Definition: LLVMContext.h:47
llvm::MachineConstantPool
The MachineConstantPool class keeps track of constants referenced by a function which must be spilled...
Definition: MachineConstantPool.h:117
iterator.h
llvm::MachineFunction::getCallSitesInfo
const CallSiteInfoMap & getCallSitesInfo() const
Definition: MachineFunction.h:1189
llvm::GraphTraits< const MachineFunction * >::getEntryNode
static NodeRef getEntryNode(const MachineFunction *F)
Definition: MachineFunction.h:1248
llvm::DenormalMode
Represent subnormal handling kind for floating point instruction inputs and outputs.
Definition: FloatingPointMode.h:67
llvm::cl::init
initializer< Ty > init(const Ty &Val)
Definition: CommandLine.h:443
llvm::GraphTraits< const MachineBasicBlock * >
Definition: MachineBasicBlock.h:1138
llvm::ilist_alloc_traits
Use delete by default for iplist and ilist.
Definition: ilist.h:40
ArrayRef.h
llvm::MachineFunctionProperties::Property::RegBankSelected
@ RegBankSelected
llvm::MachineMemOperand::Flags
Flags
Flags values. These may be or'd together.
Definition: MachineMemOperand.h:131
llvm::MachineFunction::getConstantPool
MachineConstantPool * getConstantPool()
getConstantPool - Return the constant pool object for the current function.
Definition: MachineFunction.h:658
llvm::SmallVectorImpl::const_iterator
typename SuperClass::const_iterator const_iterator
Definition: SmallVector.h:563
assert
assert(ImpDefSCC.getReg()==AMDGPU::SCC &&ImpDefSCC.isDef())
llvm::LandingPadInfo::LandingPadBlock
MachineBasicBlock * LandingPadBlock
Definition: MachineFunction.h:219
llvm::MachineFunction::getCodeViewAnnotations
ArrayRef< std::pair< MCSymbol *, MDNode * > > getCodeViewAnnotations() const
Definition: MachineFunction.h:1151
llvm::MachineFunction::getFrameInfo
MachineFrameInfo & getFrameInfo()
getFrameInfo - Return the frame info object for the current function.
Definition: MachineFunction.h:642
llvm::MachineFunction::getLandingPads
const std::vector< LandingPadInfo > & getLandingPads() const
Return a reference to the landing pad info for the current function.
Definition: MachineFunction.h:1061
llvm::MachineFunction::erase
void erase(iterator MBBI)
Definition: MachineFunction.h:842
llvm::ISD::BasicBlock
@ BasicBlock
Various leaf nodes.
Definition: ISDOpcodes.h:71
llvm::Recycler
Recycler - This class manages a linked-list of deallocated nodes and facilitates reusing deallocated ...
Definition: Recycler.h:34
llvm::MachineFunction::DebugSubstitution::operator<
bool operator<(const DebugSubstitution &Other) const
Order only by source instruction / operand pair: there should never be duplicate entries for the same...
Definition: MachineFunction.h:475
llvm::MDNode
Metadata node.
Definition: Metadata.h:901
llvm::MachineFunction::begin
const_iterator begin() const
Definition: MachineFunction.h:809
addLiveIn
static unsigned addLiveIn(MachineFunction &MF, unsigned PReg, const TargetRegisterClass *RC)
Definition: MipsISelLowering.cpp:1248
llvm::MachineFunction
Definition: MachineFunction.h:230
llvm::MachineFunction::getWasmEHFuncInfo
WasmEHFuncInfo * getWasmEHFuncInfo()
Definition: MachineFunction.h:665
TargetOptions.h
ConstantPool
MIPS Relocation Principles In there are several elements of the llvm::ISD::NodeType enum that deal with addresses and or relocations These are defined in include llvm Target TargetSelectionDAG td ConstantPool
Definition: Relocation.txt:6
llvm::BlockAddress
The address of a basic block.
Definition: Constants.h:848
llvm::MachineFunction::OperandCapacity
ArrayRecycler< MachineOperand >::Capacity OperandCapacity
Definition: MachineFunction.h:959
llvm::GraphTraits< const MachineFunction * >::nodes_begin
static nodes_iterator nodes_begin(const MachineFunction *F)
Definition: MachineFunction.h:1253
llvm::MachineFunction::rbegin
const_reverse_iterator rbegin() const
Definition: MachineFunction.h:814
llvm::ArrayRef< int >
RegInfo
Definition: AMDGPUAsmParser.cpp:2366
llvm::MachineFunction::splice
void splice(iterator InsertPt, iterator MBBI, iterator MBBE)
Definition: MachineFunction.h:836
llvm::MachineFunction::setHasEHScopes
void setHasEHScopes(bool V)
Definition: MachineFunction.h:1048
llvm::StringRef
StringRef - Represent a constant reference to a string, i.e.
Definition: StringRef.h:58
llvm::MachineFunction::VariableDbgInfo::Loc
const DILocation * Loc
Definition: MachineFunction.h:388
MBBI
MachineBasicBlock MachineBasicBlock::iterator MBBI
Definition: AArch64SLSHardening.cpp:75
llvm::ilist_callback_traits::addNodeToList
void addNodeToList(NodeTy *)
When an MBB is added to an MF, we need to update the parent pointer of the MBB, the MBB numbering,...
Definition: ilist.h:65
uint32_t
Compiler.h
llvm::MachineFunction::DebugPHIRegallocPos
Location of a PHI instruction that is also a debug-info variable value, for the duration of register ...
Definition: MachineFunction.h:491
llvm::MachineFunction::DebugPHIRegallocPos::Reg
Register Reg
VReg where the control-flow-merge happens.
Definition: MachineFunction.h:494
llvm::GraphTraits< MachineFunction * >::size
static unsigned size(MachineFunction *F)
Definition: MachineFunction.h:1244
DL
MachineBasicBlock MachineBasicBlock::iterator DebugLoc DL
Definition: AArch64SLSHardening.cpp:76
verify
ppc ctr loops verify
Definition: PPCCTRLoops.cpp:76
llvm::MCSection
Instances of this class represent a uniqued identifier for a section in the current translation unit.
Definition: MCSection.h:39
S
add sub stmia L5 ldr r0 bl L_printf $stub Instead of a and a wouldn t it be better to do three moves *Return an aggregate type is even return S
Definition: README.txt:210
llvm::MachineFunction::hasBBSections
bool hasBBSections() const
Returns true if this function has basic block sections enabled.
Definition: MachineFunction.h:604
llvm::MachineFunctionProperties::Property::TiedOpsRewritten
@ TiedOpsRewritten
llvm::MachineFunctionProperties::reset
MachineFunctionProperties & reset(Property P)
Definition: MachineFunction.h:174
llvm::GISelChangeObserver
Abstract class that contains various methods for clients to notify about changes.
Definition: GISelChangeObserver.h:29
llvm::EHPersonality
EHPersonality
Definition: EHPersonalities.h:22
llvm::TargetSubtargetInfo
TargetSubtargetInfo - Generic base class for all target subtargets.
Definition: TargetSubtargetInfo.h:59
llvm::Register
Wrapper class representing virtual and physical registers.
Definition: Register.h:19
llvm::GraphTraits< Inverse< MachineFunction * > >::getEntryNode
static NodeRef getEntryNode(Inverse< MachineFunction * > G)
Definition: MachineFunction.h:1273
llvm::ArrayRecycler< MachineOperand >
llvm::MachineFunction::DebugSubstitution
Replacement definition for a debug instruction reference.
Definition: MachineFunction.h:463
llvm::DenseMapBase< DenseMap< KeyT, ValueT, DenseMapInfo< KeyT >, llvm::detail::DenseMapPair< KeyT, ValueT > >, KeyT, ValueT, DenseMapInfo< KeyT >, llvm::detail::DenseMapPair< KeyT, ValueT > >::empty
LLVM_NODISCARD bool empty() const
Definition: DenseMap.h:97
llvm::MachineFunction::getSection
MCSection * getSection() const
Returns the Section this function belongs to.
Definition: MachineFunction.h:581
llvm::EHPersonality::Unknown
@ Unknown
MBB
MachineBasicBlock & MBB
Definition: AArch64SLSHardening.cpp:74
llvm::MachineFunction::end
const_iterator end() const
Definition: MachineFunction.h:811
llvm::MachineFunction::getFrameInfo
const MachineFrameInfo & getFrameInfo() const
Definition: MachineFunction.h:643
llvm::MachineFunctionProperties::Property::FailedISel
@ FailedISel
llvm::MachineFunction::getBlockNumbered
MachineBasicBlock * getBlockNumbered(unsigned N) const
getBlockNumbered - MachineBasicBlocks are automatically numbered when they are inserted into the mach...
Definition: MachineFunction.h:743
llvm::BitVector::test
bool test(unsigned Idx) const
Definition: BitVector.h:447
llvm::GraphProgram::Name
Name
Definition: GraphWriter.h:52
llvm::MachineFunction::getFunction
Function & getFunction()
Return the LLVM function that this machine code represents.
Definition: MachineFunction.h:592
llvm::MachineFunctionProperties::Property::NoPHIs
@ NoPHIs
uint16_t
llvm::MachineFunction::getTarget
const LLVMTargetMachine & getTarget() const
getTarget - Return the target machine this machine code is compiled with
Definition: MachineFunction.h:622
llvm::ilist_iterator
Iterator for intrusive lists based on ilist_node.
Definition: ilist_iterator.h:57
llvm::MachineFunction::erase
void erase(MachineBasicBlock *MBBI)
Definition: MachineFunction.h:843
llvm::MachineFunction::getWinEHFuncInfo
const WinEHFuncInfo * getWinEHFuncInfo() const
getWinEHFuncInfo - Return information about how the current function uses Windows exception handling.
Definition: MachineFunction.h:670
llvm::MachineFunction::addCatchretTarget
void addCatchretTarget(MCSymbol *Target)
Add the specified symbol to the list of valid catchret targets for Windows EHCont Guard.
Definition: MachineFunction.h:1031
llvm::fltSemantics
Definition: APFloat.cpp:54
llvm::MachineFunction::allocateOperandArray
MachineOperand * allocateOperandArray(OperandCapacity Cap)
Allocate an array of MachineOperands.
Definition: MachineFunction.h:963
llvm::MachineFunction::hasCallSiteBeginLabel
bool hasCallSiteBeginLabel(MCSymbol *BeginLabel) const
Return true if the begin label has a call site number associated with it.
Definition: MachineFunction.h:1142
llvm::ilist_callback_traits::removeNodeFromList
void removeNodeFromList(NodeTy *)
Definition: ilist.h:66
LLVM_NODISCARD
#define LLVM_NODISCARD
LLVM_NODISCARD - Warn if a type or return value is discarded.
Definition: Compiler.h:161
llvm::MachineFunction::getWinEHFuncInfo
WinEHFuncInfo * getWinEHFuncInfo()
Definition: MachineFunction.h:671
llvm::SyncScope::System
@ System
Synchronized with respect to all concurrently executing threads.
Definition: LLVMContext.h:58
llvm::LLVMTargetMachine
This class describes a target machine that is implemented with the LLVM target-independent code gener...
Definition: TargetMachine.h:393
llvm::MachineInstr::isCandidateForCallSiteEntry
bool isCandidateForCallSiteEntry(QueryType Type=IgnoreBundle) const
Return true if this is a call instruction that may have an associated call site entry in the debug in...
Definition: MachineInstr.cpp:707
llvm::Inverse
Definition: GraphTraits.h:95
llvm::MachineFunction::hasEHFunclets
bool hasEHFunclets() const
Definition: MachineFunction.h:1050
llvm::BitVector::reset
BitVector & reset()
Definition: BitVector.h:384
llvm::MachineFunction::addLongjmpTarget
void addLongjmpTarget(MCSymbol *Target)
Add the specified symbol to the list of valid longjmp targets for Windows Control Flow Guard.
Definition: MachineFunction.h:1021
llvm::iplist_impl::insert
iterator insert(iterator where, pointer New)
Definition: ilist.h:228
llvm::MachineFunction::ArgRegPair::Reg
Register Reg
Definition: MachineFunction.h:411
llvm::SEHHandler
Definition: MachineFunction.h:209
llvm::MachineFrameInfo
The MachineFrameInfo class represents an abstract stack frame until prolog/epilog code is inserted.
Definition: MachineFrameInfo.h:107
llvm::Pass
Pass interface - Implemented by all 'passes'.
Definition: Pass.h:91
llvm::BasicBlockSection
BasicBlockSection
Definition: TargetOptions.h:61
SmallVector.h
llvm::MachineFunction::hasWasmLandingPadIndex
bool hasWasmLandingPadIndex(const MachineBasicBlock *LPad) const
Returns true if the landing pad has an associate index in wasm EH.
Definition: MachineFunction.h:1107
llvm::MachineFunction::reset
void reset()
Reset the instance as if it was just created.
Definition: MachineFunction.h:551
llvm::PseudoSourceValueManager
Manages creation of pseudo source values.
Definition: PseudoSourceValue.h:156
ArrayRecycler.h
llvm::ilist_alloc_traits::deleteNode
static void deleteNode(NodeTy *V)
Definition: ilist.h:41
Allocator
Basic Register Allocator
Definition: RegAllocBasic.cpp:146
llvm::MachineFunctionProperties::Property::LastProperty
@ LastProperty
llvm::SmallVectorImpl::iterator
typename SuperClass::iterator iterator
Definition: SmallVector.h:562
N
#define N
llvm::MachineFunction::DebugValueSubstitutions
SmallVector< DebugSubstitution, 8 > DebugValueSubstitutions
Debug value substitutions: a collection of DebugSubstitution objects, recording changes in where a va...
Definition: MachineFunction.h:484
llvm::DenseMapBase::try_emplace
std::pair< iterator, bool > try_emplace(KeyT &&Key, Ts &&... Args)
Definition: DenseMap.h:222
MachineMemOperand.h
llvm::SmallVectorImpl
This class consists of common code factored out of the SmallVector class to reduce code duplication b...
Definition: APFloat.h:43
llvm::MachineFunction::getCallSiteBeginLabel
unsigned getCallSiteBeginLabel(MCSymbol *BeginLabel) const
Get the call site number for a begin label.
Definition: MachineFunction.h:1135
llvm::LandingPadInfo
This structure is used to retain landing pad info for the current function.
Definition: MachineFunction.h:218
llvm::MachineFunction::getSublistAccess
static BasicBlockListType MachineFunction::* getSublistAccess(MachineBasicBlock *)
Support for MachineBasicBlock::getNextNode().
Definition: MachineFunction.h:797
llvm::MachineFunction::remove
void remove(MachineBasicBlock *MBBI)
Definition: MachineFunction.h:841
llvm::MachineFunction::VariableDbgInfo::Var
const DILocalVariable * Var
Definition: MachineFunction.h:384
llvm::MachineFunction::DebugPHIPositions
DenseMap< unsigned, DebugPHIRegallocPos > DebugPHIPositions
Map of debug instruction numbers to the position of their PHI instructions during register allocation...
Definition: MachineFunction.h:502
llvm::MachineFunction::getTypeInfos
const std::vector< const GlobalValue * > & getTypeInfos() const
Return a reference to the C++ typeinfo for the current function.
Definition: MachineFunction.h:1156
llvm::MachineFunction::getCatchretTargets
const std::vector< MCSymbol * > & getCatchretTargets() const
Returns a reference to a list of symbols that we have catchrets.
Definition: MachineFunction.h:1025
llvm::MachineFunction::getWasmLandingPadIndex
unsigned getWasmLandingPadIndex(const MachineBasicBlock *LPad) const
Get the index in wasm EH for a given landing pad.
Definition: MachineFunction.h:1112
llvm::MachineFunction::getJumpTableInfo
const MachineJumpTableInfo * getJumpTableInfo() const
getJumpTableInfo - Return the jump table info object for the current function.
Definition: MachineFunction.h:649
llvm::GraphTraits
Definition: GraphTraits.h:35
llvm::DebugLoc
A debug info location.
Definition: DebugLoc.h:33
Recycler.h
llvm::MachineFunction::hasEHScopes
bool hasEHScopes() const
Definition: MachineFunction.h:1047
llvm::MachineJumpTableInfo
Definition: MachineJumpTableInfo.h:42
llvm::MachineFunction::VariableDbgInfo
Definition: MachineFunction.h:383
llvm::MachineFunction::empty
bool empty() const
Definition: MachineFunction.h:819
llvm::MachineFunction::getJumpTableInfo
MachineJumpTableInfo * getJumpTableInfo()
Definition: MachineFunction.h:650
llvm::MachineFunction::VariableDbgInfos
VariableDbgInfoMapTy VariableDbgInfos
Definition: MachineFunction.h:440
llvm::MachineInstrBundleIterator< MachineInstr >
llvm::LLT::scalar
static LLT scalar(unsigned SizeInBits)
Get a low-level scalar or aggregate "bag of bits".
Definition: LowLevelTypeImpl.h:43
llvm::MachineFunction::getMachineMemOperand
MachineMemOperand * getMachineMemOperand(const MachineMemOperand *MMO, int64_t Offset, uint64_t Size)
Definition: MachineFunction.h:931
llvm::MachineFunction::getAlignment
Align getAlignment() const
getAlignment - Return the alignment of the function.
Definition: MachineFunction.h:674
llvm::MachineFunction::setBBSectionsType
void setBBSectionsType(BasicBlockSection V)
Definition: MachineFunction.h:615
llvm::MachineFunctionInfo
MachineFunctionInfo - This class can be derived from and used by targets to hold private target-speci...
Definition: MachineFunction.h:95
llvm::SEHHandler::RecoverBA
const BlockAddress * RecoverBA
Address of block to recover at. Null for a finally handler.
Definition: MachineFunction.h:214
llvm::MachineFunction::setVariableDbgInfo
void setVariableDbgInfo(const DILocalVariable *Var, const DIExpression *Expr, int Slot, const DILocation *Loc)
Collect information used to emit debugging information of a variable.
Definition: MachineFunction.h:1169
llvm::LandingPadInfo::LandingPadInfo
LandingPadInfo(MachineBasicBlock *MBB)
Definition: MachineFunction.h:226
SubReg
unsigned SubReg
Definition: AArch64AdvSIMDScalarPass.cpp:104
llvm::MachineFunction::setCallsEHReturn
void setCallsEHReturn(bool b)
Definition: MachineFunction.h:1039
llvm::AtomicOrdering::NotAtomic
@ NotAtomic
llvm::codeview::PublicSymFlags::Function
@ Function
llvm::ISD::MCSymbol
@ MCSymbol
Definition: ISDOpcodes.h:172
llvm::MachineFunction::getRegInfo
const MachineRegisterInfo & getRegInfo() const
Definition: MachineFunction.h:637
Other
Optional< std::vector< StOtherPiece > > Other
Definition: ELFYAML.cpp:1172
llvm::MachineFunction::getLongjmpTargets
const std::vector< MCSymbol * > & getLongjmpTargets() const
Returns a reference to a list of symbols immediately following calls to _setjmp in the function.
Definition: MachineFunction.h:1015
llvm::SmallVectorImpl::emplace_back
reference emplace_back(ArgTypes &&... Args)
Definition: SmallVector.h:908
llvm::MCRegister
Wrapper class representing physical registers. Should be passed by value.
Definition: MCRegister.h:23
llvm::MachineFunctionProperties::Property::Legalized
@ Legalized
llvm::LLT
Definition: LowLevelTypeImpl.h:40