10b57cec5SDimitry Andric //===- MipsRegisterInfo.h - Mips Register Information Impl ------*- C++ -*-===// 20b57cec5SDimitry Andric // 30b57cec5SDimitry Andric // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 40b57cec5SDimitry Andric // See https://llvm.org/LICENSE.txt for license information. 50b57cec5SDimitry Andric // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 60b57cec5SDimitry Andric // 70b57cec5SDimitry Andric //===----------------------------------------------------------------------===// 80b57cec5SDimitry Andric // 90b57cec5SDimitry Andric // This file contains the Mips implementation of the TargetRegisterInfo class. 100b57cec5SDimitry Andric // 110b57cec5SDimitry Andric //===----------------------------------------------------------------------===// 120b57cec5SDimitry Andric 130b57cec5SDimitry Andric #ifndef LLVM_LIB_TARGET_MIPS_MIPSREGISTERINFO_H 140b57cec5SDimitry Andric #define LLVM_LIB_TARGET_MIPS_MIPSREGISTERINFO_H 150b57cec5SDimitry Andric 160b57cec5SDimitry Andric #include "Mips.h" 170b57cec5SDimitry Andric #include "llvm/CodeGen/MachineBasicBlock.h" 180b57cec5SDimitry Andric #include <cstdint> 190b57cec5SDimitry Andric 200b57cec5SDimitry Andric #define GET_REGINFO_HEADER 210b57cec5SDimitry Andric #include "MipsGenRegisterInfo.inc" 220b57cec5SDimitry Andric 230b57cec5SDimitry Andric namespace llvm { 240b57cec5SDimitry Andric 250b57cec5SDimitry Andric class TargetRegisterClass; 260b57cec5SDimitry Andric 270b57cec5SDimitry Andric class MipsRegisterInfo : public MipsGenRegisterInfo { 280b57cec5SDimitry Andric public: 290b57cec5SDimitry Andric enum class MipsPtrClass { 300b57cec5SDimitry Andric /// The default register class for integer values. 310b57cec5SDimitry Andric Default = 0, 320b57cec5SDimitry Andric /// The subset of registers permitted in certain microMIPS instructions 330b57cec5SDimitry Andric /// such as lw16. 340b57cec5SDimitry Andric GPR16MM = 1, 350b57cec5SDimitry Andric /// The stack pointer only. 360b57cec5SDimitry Andric StackPointer = 2, 370b57cec5SDimitry Andric /// The global pointer only. 380b57cec5SDimitry Andric GlobalPointer = 3, 390b57cec5SDimitry Andric }; 400b57cec5SDimitry Andric 410b57cec5SDimitry Andric MipsRegisterInfo(); 420b57cec5SDimitry Andric 430b57cec5SDimitry Andric /// Get PIC indirect call register 440b57cec5SDimitry Andric static unsigned getPICCallReg(); 450b57cec5SDimitry Andric 460b57cec5SDimitry Andric /// Code Generation virtual methods... 470b57cec5SDimitry Andric const TargetRegisterClass *getPointerRegClass(const MachineFunction &MF, 480b57cec5SDimitry Andric unsigned Kind) const override; 490b57cec5SDimitry Andric 500b57cec5SDimitry Andric unsigned getRegPressureLimit(const TargetRegisterClass *RC, 510b57cec5SDimitry Andric MachineFunction &MF) const override; 520b57cec5SDimitry Andric const MCPhysReg *getCalleeSavedRegs(const MachineFunction *MF) const override; 530b57cec5SDimitry Andric const uint32_t *getCallPreservedMask(const MachineFunction &MF, 540b57cec5SDimitry Andric CallingConv::ID) const override; 550b57cec5SDimitry Andric static const uint32_t *getMips16RetHelperMask(); 560b57cec5SDimitry Andric 570b57cec5SDimitry Andric BitVector getReservedRegs(const MachineFunction &MF) const override; 580b57cec5SDimitry Andric 590b57cec5SDimitry Andric /// Stack Frame Processing Methods 60*bdd1243dSDimitry Andric bool eliminateFrameIndex(MachineBasicBlock::iterator II, 610b57cec5SDimitry Andric int SPAdj, unsigned FIOperandNum, 620b57cec5SDimitry Andric RegScavenger *RS = nullptr) const override; 630b57cec5SDimitry Andric 640b57cec5SDimitry Andric // Stack realignment queries. 650b57cec5SDimitry Andric bool canRealignStack(const MachineFunction &MF) const override; 660b57cec5SDimitry Andric 670b57cec5SDimitry Andric /// Debug information queries. 680b57cec5SDimitry Andric Register getFrameRegister(const MachineFunction &MF) const override; 690b57cec5SDimitry Andric 700b57cec5SDimitry Andric /// Return GPR register class. 710b57cec5SDimitry Andric virtual const TargetRegisterClass *intRegClass(unsigned Size) const = 0; 720b57cec5SDimitry Andric 730b57cec5SDimitry Andric private: 740b57cec5SDimitry Andric virtual void eliminateFI(MachineBasicBlock::iterator II, unsigned OpNo, 750b57cec5SDimitry Andric int FrameIndex, uint64_t StackSize, 760b57cec5SDimitry Andric int64_t SPOffset) const = 0; 770b57cec5SDimitry Andric }; 780b57cec5SDimitry Andric 790b57cec5SDimitry Andric } // end namespace llvm 800b57cec5SDimitry Andric 810b57cec5SDimitry Andric #endif // LLVM_LIB_TARGET_MIPS_MIPSREGISTERINFO_H 82