| 1 | //===-- MipsFrameLowering.h - Define frame lowering for Mips ----*- C++ -*-===// |
|---|---|
| 2 | // |
| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| 4 | // See https://llvm.org/LICENSE.txt for license information. |
| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| 6 | // |
| 7 | //===----------------------------------------------------------------------===// |
| 8 | // |
| 9 | // |
| 10 | // |
| 11 | //===----------------------------------------------------------------------===// |
| 12 | |
| 13 | #ifndef LLVM_LIB_TARGET_MIPS_MIPSFRAMELOWERING_H |
| 14 | #define LLVM_LIB_TARGET_MIPS_MIPSFRAMELOWERING_H |
| 15 | |
| 16 | #include "Mips.h" |
| 17 | #include "llvm/CodeGen/TargetFrameLowering.h" |
| 18 | |
| 19 | namespace llvm { |
| 20 | class MipsSubtarget; |
| 21 | |
| 22 | class MipsFrameLowering : public TargetFrameLowering { |
| 23 | protected: |
| 24 | const MipsSubtarget &STI; |
| 25 | |
| 26 | public: |
| 27 | explicit MipsFrameLowering(const MipsSubtarget &sti, Align Alignment) |
| 28 | : TargetFrameLowering(StackGrowsDown, Alignment, 0, Alignment), STI(sti) { |
| 29 | } |
| 30 | |
| 31 | static const MipsFrameLowering *create(const MipsSubtarget &ST); |
| 32 | |
| 33 | bool hasFP(const MachineFunction &MF) const override; |
| 34 | |
| 35 | bool hasBP(const MachineFunction &MF) const; |
| 36 | |
| 37 | bool allocateScavengingFrameIndexesNearIncomingSP( |
| 38 | const MachineFunction &MF) const override { |
| 39 | return false; |
| 40 | } |
| 41 | |
| 42 | bool enableShrinkWrapping(const MachineFunction &MF) const override { |
| 43 | return true; |
| 44 | } |
| 45 | |
| 46 | MachineBasicBlock::iterator |
| 47 | eliminateCallFramePseudoInstr(MachineFunction &MF, |
| 48 | MachineBasicBlock &MBB, |
| 49 | MachineBasicBlock::iterator I) const override; |
| 50 | |
| 51 | protected: |
| 52 | uint64_t estimateStackSize(const MachineFunction &MF) const; |
| 53 | }; |
| 54 | |
| 55 | /// Create MipsFrameLowering objects. |
| 56 | const MipsFrameLowering *createMips16FrameLowering(const MipsSubtarget &ST); |
| 57 | const MipsFrameLowering *createMipsSEFrameLowering(const MipsSubtarget &ST); |
| 58 | |
| 59 | } // End llvm namespace |
| 60 | |
| 61 | #endif |
| 62 |