LCOV - code coverage report
Current view: top level - lib/Target/AArch64 - AArch64FrameLowering.h (source / functions) Hit Total Coverage
Test: llvm-toolchain.info Lines: 4 4 100.0 %
Date: 2017-09-14 15:23:50 Functions: 1 3 33.3 %
Legend: Lines: hit not hit

          Line data    Source code
       1             : //==-- AArch64FrameLowering.h - TargetFrameLowering for AArch64 --*- C++ -*-==//
       2             : //
       3             : //                     The LLVM Compiler Infrastructure
       4             : //
       5             : // This file is distributed under the University of Illinois Open Source
       6             : // License. See LICENSE.TXT for details.
       7             : //
       8             : //===----------------------------------------------------------------------===//
       9             : //
      10             : //
      11             : //
      12             : //===----------------------------------------------------------------------===//
      13             : 
      14             : #ifndef LLVM_LIB_TARGET_AARCH64_AARCH64FRAMELOWERING_H
      15             : #define LLVM_LIB_TARGET_AARCH64_AARCH64FRAMELOWERING_H
      16             : 
      17             : #include "llvm/Target/TargetFrameLowering.h"
      18             : 
      19             : namespace llvm {
      20             : 
      21        1193 : class AArch64FrameLowering : public TargetFrameLowering {
      22             : public:
      23             :   explicit AArch64FrameLowering()
      24             :       : TargetFrameLowering(StackGrowsDown, 16, 0, 16,
      25        2428 :                             true /*StackRealignable*/) {}
      26             : 
      27             :   void emitCalleeSavedFrameMoves(MachineBasicBlock &MBB,
      28             :                                  MachineBasicBlock::iterator MBBI) const;
      29             : 
      30             :   MachineBasicBlock::iterator
      31             :   eliminateCallFramePseudoInstr(MachineFunction &MF, MachineBasicBlock &MBB,
      32             :                                 MachineBasicBlock::iterator I) const override;
      33             : 
      34             :   /// emitProlog/emitEpilog - These methods insert prolog and epilog code into
      35             :   /// the function.
      36             :   void emitPrologue(MachineFunction &MF, MachineBasicBlock &MBB) const override;
      37             :   void emitEpilogue(MachineFunction &MF, MachineBasicBlock &MBB) const override;
      38             : 
      39             :   bool canUseAsPrologue(const MachineBasicBlock &MBB) const override;
      40             : 
      41             :   int getFrameIndexReference(const MachineFunction &MF, int FI,
      42             :                              unsigned &FrameReg) const override;
      43             :   int resolveFrameIndexReference(const MachineFunction &MF, int FI,
      44             :                                  unsigned &FrameReg,
      45             :                                  bool PreferFP = false) const;
      46             :   bool spillCalleeSavedRegisters(MachineBasicBlock &MBB,
      47             :                                  MachineBasicBlock::iterator MI,
      48             :                                  const std::vector<CalleeSavedInfo> &CSI,
      49             :                                  const TargetRegisterInfo *TRI) const override;
      50             : 
      51             :   bool restoreCalleeSavedRegisters(MachineBasicBlock &MBB,
      52             :                                   MachineBasicBlock::iterator MI,
      53             :                                   std::vector<CalleeSavedInfo> &CSI,
      54             :                                   const TargetRegisterInfo *TRI) const override;
      55             : 
      56             :   /// \brief Can this function use the red zone for local allocations.
      57             :   bool canUseRedZone(const MachineFunction &MF) const;
      58             : 
      59             :   bool hasFP(const MachineFunction &MF) const override;
      60             :   bool hasReservedCallFrame(const MachineFunction &MF) const override;
      61             : 
      62             :   void determineCalleeSaves(MachineFunction &MF, BitVector &SavedRegs,
      63             :                             RegScavenger *RS) const override;
      64             : 
      65             :   /// Returns true if the target will correctly handle shrink wrapping.
      66       10948 :   bool enableShrinkWrapping(const MachineFunction &MF) const override {
      67       10948 :     return true;
      68             :   }
      69             : 
      70             :   bool enableStackSlotScavenging(const MachineFunction &MF) const override;
      71             : 
      72             : private:
      73             :   bool shouldCombineCSRLocalStackBump(MachineFunction &MF,
      74             :                                       unsigned StackBumpBytes) const;
      75             : };
      76             : 
      77             : } // End llvm namespace
      78             : 
      79             : #endif

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