diff options
Diffstat (limited to 'llvm/lib/Target/X86/X86FrameLowering.h')
| -rw-r--r-- | llvm/lib/Target/X86/X86FrameLowering.h | 192 |
1 files changed, 95 insertions, 97 deletions
diff --git a/llvm/lib/Target/X86/X86FrameLowering.h b/llvm/lib/Target/X86/X86FrameLowering.h index d93c9467182..dd8fc3240c2 100644 --- a/llvm/lib/Target/X86/X86FrameLowering.h +++ b/llvm/lib/Target/X86/X86FrameLowering.h @@ -1,97 +1,95 @@ -//===-- X86TargetFrameLowering.h - Define frame lowering for X86 -*- C++ -*-==//
-//
-// The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-//
-// This class implements X86-specific bits of TargetFrameLowering class.
-//
-//===----------------------------------------------------------------------===//
-
-#ifndef LLVM_LIB_TARGET_X86_X86FRAMELOWERING_H
-#define LLVM_LIB_TARGET_X86_X86FRAMELOWERING_H
-
-#include "llvm/Target/TargetFrameLowering.h"
-
-namespace llvm {
-
-class MCSymbol;
-class X86TargetMachine;
-class X86Subtarget;
-
-class X86FrameLowering : public TargetFrameLowering {
-public:
- explicit X86FrameLowering(StackDirection D, unsigned StackAl, int LAO)
- : TargetFrameLowering(StackGrowsDown, StackAl, LAO) {}
-
- /// Emit a call to the target's stack probe function. This is required for all
- /// large stack allocations on Windows. The caller is required to materialize
- /// the number of bytes to probe in RAX/EAX.
- static void emitStackProbeCall(MachineFunction &MF, MachineBasicBlock &MBB,
- MachineBasicBlock::iterator MBBI, DebugLoc DL);
-
- void emitCalleeSavedFrameMoves(MachineBasicBlock &MBB,
- MachineBasicBlock::iterator MBBI,
- DebugLoc DL) const;
-
- /// emitProlog/emitEpilog - These methods insert prolog and epilog code into
- /// the function.
- void emitPrologue(MachineFunction &MF) const override;
- void emitEpilogue(MachineFunction &MF, MachineBasicBlock &MBB) const override;
-
- void adjustForSegmentedStacks(MachineFunction &MF) const override;
-
- void adjustForHiPEPrologue(MachineFunction &MF) const override;
-
- void processFunctionBeforeCalleeSavedScan(MachineFunction &MF,
- RegScavenger *RS = nullptr) const override;
-
- bool
- assignCalleeSavedSpillSlots(MachineFunction &MF,
- const TargetRegisterInfo *TRI,
- std::vector<CalleeSavedInfo> &CSI) const override;
-
- bool spillCalleeSavedRegisters(MachineBasicBlock &MBB,
- MachineBasicBlock::iterator MI,
- const std::vector<CalleeSavedInfo> &CSI,
- const TargetRegisterInfo *TRI) const override;
-
- bool restoreCalleeSavedRegisters(MachineBasicBlock &MBB,
- MachineBasicBlock::iterator MI,
- const std::vector<CalleeSavedInfo> &CSI,
- const TargetRegisterInfo *TRI) const override;
-
- bool hasFP(const MachineFunction &MF) const override;
- bool hasReservedCallFrame(const MachineFunction &MF) const override;
- bool canSimplifyCallFramePseudos(const MachineFunction &MF) const override;
- bool needsFrameIndexResolution(const MachineFunction &MF) const override;
-
- int getFrameIndexOffset(const MachineFunction &MF, int FI) const override;
- int getFrameIndexReference(const MachineFunction &MF, int FI,
- unsigned &FrameReg) const override;
-
- int getFrameIndexOffsetFromSP(const MachineFunction &MF, int FI) const;
- int getFrameIndexReferenceFromSP(const MachineFunction &MF, int FI,
- unsigned &FrameReg) const override;
-
- void eliminateCallFramePseudoInstr(MachineFunction &MF,
- MachineBasicBlock &MBB,
- MachineBasicBlock::iterator MI) const override;
-
-private:
- /// convertArgMovsToPushes - This method tries to convert a call sequence
- /// that uses sub and mov instructions to put the argument onto the stack
- /// into a series of pushes.
- /// Returns true if the transformation succeeded, false if not.
- bool convertArgMovsToPushes(MachineFunction &MF,
- MachineBasicBlock &MBB,
- MachineBasicBlock::iterator I,
- uint64_t Amount) const;
-};
-
-} // End llvm namespace
-
-#endif
+//===-- X86TargetFrameLowering.h - Define frame lowering for X86 -*- C++ -*-==// +// +// The LLVM Compiler Infrastructure +// +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// +// +// This class implements X86-specific bits of TargetFrameLowering class. +// +//===----------------------------------------------------------------------===// + +#ifndef LLVM_LIB_TARGET_X86_X86FRAMELOWERING_H +#define LLVM_LIB_TARGET_X86_X86FRAMELOWERING_H + +#include "llvm/Target/TargetFrameLowering.h" + +namespace llvm { + +class MCSymbol; +class X86TargetMachine; +class X86Subtarget; + +class X86FrameLowering : public TargetFrameLowering { +public: + explicit X86FrameLowering(StackDirection D, unsigned StackAl, int LAO) + : TargetFrameLowering(StackGrowsDown, StackAl, LAO) {} + + /// Emit a call to the target's stack probe function. This is required for all + /// large stack allocations on Windows. The caller is required to materialize + /// the number of bytes to probe in RAX/EAX. + static void emitStackProbeCall(MachineFunction &MF, MachineBasicBlock &MBB, + MachineBasicBlock::iterator MBBI, DebugLoc DL); + + void emitCalleeSavedFrameMoves(MachineBasicBlock &MBB, + MachineBasicBlock::iterator MBBI, + DebugLoc DL) const; + + /// emitProlog/emitEpilog - These methods insert prolog and epilog code into + /// the function. + void emitPrologue(MachineFunction &MF) const override; + void emitEpilogue(MachineFunction &MF, MachineBasicBlock &MBB) const override; + + void adjustForSegmentedStacks(MachineFunction &MF) const override; + + void adjustForHiPEPrologue(MachineFunction &MF) const override; + + void processFunctionBeforeCalleeSavedScan(MachineFunction &MF, + RegScavenger *RS = nullptr) const override; + + bool + assignCalleeSavedSpillSlots(MachineFunction &MF, + const TargetRegisterInfo *TRI, + std::vector<CalleeSavedInfo> &CSI) const override; + + bool spillCalleeSavedRegisters(MachineBasicBlock &MBB, + MachineBasicBlock::iterator MI, + const std::vector<CalleeSavedInfo> &CSI, + const TargetRegisterInfo *TRI) const override; + + bool restoreCalleeSavedRegisters(MachineBasicBlock &MBB, + MachineBasicBlock::iterator MI, + const std::vector<CalleeSavedInfo> &CSI, + const TargetRegisterInfo *TRI) const override; + + bool hasFP(const MachineFunction &MF) const override; + bool hasReservedCallFrame(const MachineFunction &MF) const override; + + int getFrameIndexOffset(const MachineFunction &MF, int FI) const override; + int getFrameIndexReference(const MachineFunction &MF, int FI, + unsigned &FrameReg) const override; + + int getFrameIndexOffsetFromSP(const MachineFunction &MF, int FI) const; + int getFrameIndexReferenceFromSP(const MachineFunction &MF, int FI, + unsigned &FrameReg) const override; + + void eliminateCallFramePseudoInstr(MachineFunction &MF, + MachineBasicBlock &MBB, + MachineBasicBlock::iterator MI) const override; + +private: + /// convertArgMovsToPushes - This method tries to convert a call sequence + /// that uses sub and mov instructions to put the argument onto the stack + /// into a series of pushes. + /// Returns true if the transformation succeeded, false if not. + bool convertArgMovsToPushes(MachineFunction &MF, + MachineBasicBlock &MBB, + MachineBasicBlock::iterator I, + uint64_t Amount) const; +}; + +} // End llvm namespace + +#endif |

