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//===-- MipsFrameLowering.h - Define frame lowering for Mips ----*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
//
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_LIB_TARGET_MIPS_MIPSFRAMELOWERING_H
#define LLVM_LIB_TARGET_MIPS_MIPSFRAMELOWERING_H
#include "Mips.h"
#include "llvm/CodeGen/TargetFrameLowering.h"
namespace llvm {
class MipsSubtarget;
class MipsFrameLowering : public TargetFrameLowering {
protected:
const MipsSubtarget &STI;
public:
explicit MipsFrameLowering(const MipsSubtarget &sti, unsigned Alignment)
: TargetFrameLowering(StackGrowsDown, Alignment, 0, Alignment), STI(sti) {}
static const MipsFrameLowering *create(const MipsSubtarget &ST);
bool hasFP(const MachineFunction &MF) const override;
bool hasBP(const MachineFunction &MF) const;
bool isFPCloseToIncomingSP() const override { return false; }
bool enableShrinkWrapping(const MachineFunction &MF) const override {
return true;
}
MachineBasicBlock::iterator
eliminateCallFramePseudoInstr(MachineFunction &MF,
MachineBasicBlock &MBB,
MachineBasicBlock::iterator I) const override;
protected:
uint64_t estimateStackSize(const MachineFunction &MF) const;
};
/// Create MipsFrameLowering objects.
const MipsFrameLowering *createMips16FrameLowering(const MipsSubtarget &ST);
const MipsFrameLowering *createMipsSEFrameLowering(const MipsSubtarget &ST);
} // End llvm namespace
#endif
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