#ifndef X86_FRAMELOWERING_H
#define X86_FRAMELOWERING_H
-#include "X86Subtarget.h"
-#include "llvm/MC/MCDwarf.h"
#include "llvm/Target/TargetFrameLowering.h"
namespace llvm {
-namespace CU {
-
- /// Compact unwind encoding values.
- enum CompactUnwindEncodings {
- /// [RE]BP based frame where [RE]BP is pused on the stack immediately after
- /// the return address, then [RE]SP is moved to [RE]BP.
- UNWIND_MODE_BP_FRAME = 0x01000000,
-
- /// A frameless function with a small constant stack size.
- UNWIND_MODE_STACK_IMMD = 0x02000000,
-
- /// A frameless function with a large constant stack size.
- UNWIND_MODE_STACK_IND = 0x03000000,
-
- /// No compact unwind encoding is available.
- UNWIND_MODE_DWARF = 0x04000000,
-
- /// Mask for encoding the frame registers.
- UNWIND_BP_FRAME_REGISTERS = 0x00007FFF,
-
- /// Mask for encoding the frameless registers.
- UNWIND_FRAMELESS_STACK_REG_PERMUTATION = 0x000003FF
- };
-
-} // end CU namespace
-
class MCSymbol;
class X86TargetMachine;
class X86FrameLowering : public TargetFrameLowering {
- const X86TargetMachine &TM;
- const X86Subtarget &STI;
public:
- explicit X86FrameLowering(const X86TargetMachine &tm, const X86Subtarget &sti)
- : TargetFrameLowering(StackGrowsDown,
- sti.getStackAlignment(),
- (sti.is64Bit() ? -8 : -4)),
- TM(tm), STI(sti) {
- }
-
- void emitCalleeSavedFrameMoves(MachineFunction &MF, MCSymbol *Label,
+ explicit X86FrameLowering(StackDirection D, unsigned StackAl, int LAO)
+ : TargetFrameLowering(StackGrowsDown, StackAl, LAO) {}
+
+ void emitCalleeSavedFrameMoves(MachineBasicBlock &MBB,
+ MachineBasicBlock::iterator MBBI, DebugLoc DL,
unsigned FramePtr) const;
/// emitProlog/emitEpilog - These methods insert prolog and epilog code into
/// the function.
- void emitPrologue(MachineFunction &MF) const;
- void emitEpilogue(MachineFunction &MF, MachineBasicBlock &MBB) const;
+ void emitPrologue(MachineFunction &MF) const override;
+ void emitEpilogue(MachineFunction &MF, MachineBasicBlock &MBB) const override;
- void adjustForSegmentedStacks(MachineFunction &MF) const;
+ void adjustForSegmentedStacks(MachineFunction &MF) const override;
- void adjustForHiPEPrologue(MachineFunction &MF) const;
+ void adjustForHiPEPrologue(MachineFunction &MF) const override;
void processFunctionBeforeCalleeSavedScan(MachineFunction &MF,
- RegScavenger *RS = NULL) const;
+ RegScavenger *RS = nullptr) const override;
bool spillCalleeSavedRegisters(MachineBasicBlock &MBB,
MachineBasicBlock::iterator MI,
const std::vector<CalleeSavedInfo> &CSI,
- const TargetRegisterInfo *TRI) const;
+ const TargetRegisterInfo *TRI) const override;
bool restoreCalleeSavedRegisters(MachineBasicBlock &MBB,
- MachineBasicBlock::iterator MI,
- const std::vector<CalleeSavedInfo> &CSI,
- const TargetRegisterInfo *TRI) const;
+ MachineBasicBlock::iterator MI,
+ const std::vector<CalleeSavedInfo> &CSI,
+ const TargetRegisterInfo *TRI) const override;
- bool hasFP(const MachineFunction &MF) const;
- bool hasReservedCallFrame(const MachineFunction &MF) const;
+ bool hasFP(const MachineFunction &MF) const override;
+ bool hasReservedCallFrame(const MachineFunction &MF) const override;
- int getFrameIndexOffset(const MachineFunction &MF, int FI) const;
+ int getFrameIndexOffset(const MachineFunction &MF, int FI) const override;
int getFrameIndexReference(const MachineFunction &MF, int FI,
- unsigned &FrameReg) const;
- uint32_t getCompactUnwindEncoding(MachineFunction &MF) const;
+ unsigned &FrameReg) const override;
void eliminateCallFramePseudoInstr(MachineFunction &MF,
- MachineBasicBlock &MBB,
- MachineBasicBlock::iterator MI) const;
+ MachineBasicBlock &MBB,
+ MachineBasicBlock::iterator MI) const override;
};
} // End llvm namespace