//
//===----------------------------------------------------------------------===//
-#ifndef X86_FRAMELOWERING_H
-#define X86_FRAMELOWERING_H
+#ifndef LLVM_LIB_TARGET_X86_X86FRAMELOWERING_H
+#define LLVM_LIB_TARGET_X86_X86FRAMELOWERING_H
-#include "X86Subtarget.h"
#include "llvm/Target/TargetFrameLowering.h"
namespace llvm {
class MCSymbol;
class X86TargetMachine;
+class X86Subtarget;
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) {
- }
+ explicit X86FrameLowering(StackDirection D, unsigned StackAl, int LAO)
+ : TargetFrameLowering(StackGrowsDown, StackAl, LAO) {}
+
+ static void getStackProbeFunction(const X86Subtarget &STI,
+ unsigned &CallOp,
+ const char *&Symbol);
void emitCalleeSavedFrameMoves(MachineBasicBlock &MBB,
- MachineBasicBlock::iterator MBBI, DebugLoc DL,
- unsigned FramePtr) const;
+ MachineBasicBlock::iterator MBBI,
+ DebugLoc DL) const;
/// emitProlog/emitEpilog - These methods insert prolog and epilog code into
/// the function.
void adjustForHiPEPrologue(MachineFunction &MF) const override;
void processFunctionBeforeCalleeSavedScan(MachineFunction &MF,
- RegScavenger *RS = NULL) const override;
+ 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,
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