Coverage Report

Created: 2017-10-03 07:32

/Users/buildslave/jenkins/sharedspace/clang-stage2-coverage-R@2/llvm/lib/Target/AArch64/AArch64MachineFunctionInfo.h
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//=- AArch64MachineFunctionInfo.h - AArch64 machine function info -*- C++ -*-=//
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//
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//                     The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file declares AArch64-specific per-machine-function information.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_LIB_TARGET_AARCH64_AARCH64MACHINEFUNCTIONINFO_H
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#define LLVM_LIB_TARGET_AARCH64_AARCH64MACHINEFUNCTIONINFO_H
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#include "llvm/ADT/ArrayRef.h"
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#include "llvm/ADT/SmallPtrSet.h"
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#include "llvm/ADT/SmallVector.h"
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#include "llvm/CodeGen/MachineFunction.h"
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#include "llvm/MC/MCLinkerOptimizationHint.h"
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#include <cassert>
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namespace llvm {
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class MachineInstr;
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/// AArch64FunctionInfo - This class is derived from MachineFunctionInfo and
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/// contains private AArch64-specific information for each MachineFunction.
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class AArch64FunctionInfo final : public MachineFunctionInfo {
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  /// Number of bytes of arguments this function has on the stack. If the callee
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  /// is expected to restore the argument stack this should be a multiple of 16,
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  /// all usable during a tail call.
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  ///
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  /// The alternative would forbid tail call optimisation in some cases: if we
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  /// want to transfer control from a function with 8-bytes of stack-argument
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  /// space to a function with 16-bytes then misalignment of this value would
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  /// make a stack adjustment necessary, which could not be undone by the
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  /// callee.
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  unsigned BytesInStackArgArea = 0;
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  /// The number of bytes to restore to deallocate space for incoming
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  /// arguments. Canonically 0 in the C calling convention, but non-zero when
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  /// callee is expected to pop the args.
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  unsigned ArgumentStackToRestore = 0;
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  /// HasStackFrame - True if this function has a stack frame. Set by
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  /// determineCalleeSaves().
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  bool HasStackFrame = false;
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  /// \brief Amount of stack frame size, not including callee-saved registers.
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  unsigned LocalStackSize;
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  /// \brief Amount of stack frame size used for saving callee-saved registers.
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  unsigned CalleeSavedStackSize;
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  /// \brief Number of TLS accesses using the special (combinable)
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  /// _TLS_MODULE_BASE_ symbol.
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  unsigned NumLocalDynamicTLSAccesses = 0;
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  /// \brief FrameIndex for start of varargs area for arguments passed on the
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  /// stack.
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  int VarArgsStackIndex = 0;
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  /// \brief FrameIndex for start of varargs area for arguments passed in
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  /// general purpose registers.
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  int VarArgsGPRIndex = 0;
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  /// \brief Size of the varargs area for arguments passed in general purpose
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  /// registers.
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  unsigned VarArgsGPRSize = 0;
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  /// \brief FrameIndex for start of varargs area for arguments passed in
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  /// floating-point registers.
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  int VarArgsFPRIndex = 0;
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  /// \brief Size of the varargs area for arguments passed in floating-point
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  /// registers.
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  unsigned VarArgsFPRSize = 0;
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  /// True if this function has a subset of CSRs that is handled explicitly via
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  /// copies.
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  bool IsSplitCSR = false;
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  /// True when the stack gets realigned dynamically because the size of stack
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  /// frame is unknown at compile time. e.g., in case of VLAs.
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  bool StackRealigned = false;
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  /// True when the callee-save stack area has unused gaps that may be used for
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  /// other stack allocations.
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  bool CalleeSaveStackHasFreeSpace = false;
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public:
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  AArch64FunctionInfo() = default;
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  explicit AArch64FunctionInfo(MachineFunction &MF) {
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456k
    (void)MF;
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  }
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  unsigned getBytesInStackArgArea() const { return BytesInStackArgArea; }
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  void setBytesInStackArgArea(unsigned bytes) { BytesInStackArgArea = bytes; }
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  unsigned getArgumentStackToRestore() const { return ArgumentStackToRestore; }
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  void setArgumentStackToRestore(unsigned bytes) {
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    ArgumentStackToRestore = bytes;
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  }
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1.35M
  bool hasStackFrame() const { return HasStackFrame; }
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321k
  void setHasStackFrame(bool s) { HasStackFrame = s; }
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  bool isStackRealigned() const { return StackRealigned; }
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  void setStackRealigned(bool s) { StackRealigned = s; }
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50.0k
  bool hasCalleeSaveStackFreeSpace() const {
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50.0k
    return CalleeSaveStackHasFreeSpace;
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50.0k
  }
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983
  void setCalleeSaveStackHasFreeSpace(bool s) {
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    CalleeSaveStackHasFreeSpace = s;
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  }
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  bool isSplitCSR() const { return IsSplitCSR; }
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  void setIsSplitCSR(bool s) { IsSplitCSR = s; }
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  void setLocalStackSize(unsigned Size) { LocalStackSize = Size; }
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1.37M
  unsigned getLocalStackSize() const { return LocalStackSize; }
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572k
  void setCalleeSavedStackSize(unsigned Size) { CalleeSavedStackSize = Size; }
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4.05M
  unsigned getCalleeSavedStackSize() const { return CalleeSavedStackSize; }
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  void incNumLocalDynamicTLSAccesses() { ++NumLocalDynamicTLSAccesses; }
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9.30k
  unsigned getNumLocalDynamicTLSAccesses() const {
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9.30k
    return NumLocalDynamicTLSAccesses;
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  }
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  int getVarArgsStackIndex() const { return VarArgsStackIndex; }
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  void setVarArgsStackIndex(int Index) { VarArgsStackIndex = Index; }
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  int getVarArgsGPRIndex() const { return VarArgsGPRIndex; }
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  void setVarArgsGPRIndex(int Index) { VarArgsGPRIndex = Index; }
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  unsigned getVarArgsGPRSize() const { return VarArgsGPRSize; }
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  void setVarArgsGPRSize(unsigned Size) { VarArgsGPRSize = Size; }
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  int getVarArgsFPRIndex() const { return VarArgsFPRIndex; }
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  void setVarArgsFPRIndex(int Index) { VarArgsFPRIndex = Index; }
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  unsigned getVarArgsFPRSize() const { return VarArgsFPRSize; }
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  void setVarArgsFPRSize(unsigned Size) { VarArgsFPRSize = Size; }
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  using SetOfInstructions = SmallPtrSet<const MachineInstr *, 16>;
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  const SetOfInstructions &getLOHRelated() const { return LOHRelated; }
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  // Shortcuts for LOH related types.
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  class MILOHDirective {
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    MCLOHType Kind;
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    /// Arguments of this directive. Order matters.
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    SmallVector<const MachineInstr *, 3> Args;
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  public:
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    using LOHArgs = ArrayRef<const MachineInstr *>;
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    MILOHDirective(MCLOHType Kind, LOHArgs Args)
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1.23M
        : Kind(Kind), Args(Args.begin(), Args.end()) {
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1.23M
      assert(isValidMCLOHType(Kind) && "Invalid LOH directive type!");
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1.23M
    }
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1.23M
    MCLOHType getKind() const { return Kind; }
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1.23M
    LOHArgs getArgs() const { return Args; }
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  };
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  using MILOHArgs = MILOHDirective::LOHArgs;
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  using MILOHContainer = SmallVector<MILOHDirective, 32>;
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  const MILOHContainer &getLOHContainer() const { return LOHContainerSet; }
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  /// Add a LOH directive of this @p Kind and this @p Args.
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1.23M
  void addLOHDirective(MCLOHType Kind, MILOHArgs Args) {
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1.23M
    LOHContainerSet.push_back(MILOHDirective(Kind, Args));
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1.23M
    LOHRelated.insert(Args.begin(), Args.end());
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  }
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private:
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  // Hold the lists of LOHs.
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  MILOHContainer LOHContainerSet;
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  SetOfInstructions LOHRelated;
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};
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} // end namespace llvm
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#endif // LLVM_LIB_TARGET_AARCH64_AARCH64MACHINEFUNCTIONINFO_H