LLVM 20.0.0git
ARCFrameLowering.h
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1//===- ARCFrameLowering.h - Define frame lowering for ARC -------*- 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// This class implements the ARC specific frame lowering.
10//
11//===----------------------------------------------------------------------===//
12
13#ifndef LLVM_LIB_TARGET_ARC_ARCFRAMELOWERING_H
14#define LLVM_LIB_TARGET_ARC_ARCFRAMELOWERING_H
15
16#include "ARC.h"
20
21namespace llvm {
22
23class MachineFunction;
24class ARCSubtarget;
25class ARCInstrInfo;
26
28public:
31 ST(st) {}
32
33 /// Insert Prologue into the function.
34 void emitPrologue(MachineFunction &MF, MachineBasicBlock &MBB) const override;
35
36 /// Insert Epilogue into the function.
37 void emitEpilogue(MachineFunction &MF, MachineBasicBlock &MBB) const override;
38
39 /// Add explicit callee save registers.
41 RegScavenger *RS) const override;
42
46 const TargetRegisterInfo *TRI) const override;
47
48 bool
52 const TargetRegisterInfo *TRI) const override;
53
55 RegScavenger *RS) const override;
56
57 bool hasFP(const MachineFunction &MF) const override;
58
61 MachineBasicBlock::iterator I) const override;
62
65 std::vector<llvm::CalleeSavedInfo> &) const override;
66
67private:
68 void adjustStackToMatchRecords(MachineBasicBlock &MBB,
70 bool allocate) const;
71
72 const ARCSubtarget &ST;
73};
74
75} // end namespace llvm
76
77#endif // LLVM_LIB_TARGET_ARC_ARCFRAMELOWERING_H
MachineBasicBlock & MBB
IRTranslator LLVM IR MI
#define I(x, y, z)
Definition: MD5.cpp:58
unsigned const TargetRegisterInfo * TRI
bool restoreCalleeSavedRegisters(MachineBasicBlock &MBB, MachineBasicBlock::iterator MI, MutableArrayRef< CalleeSavedInfo > CSI, const TargetRegisterInfo *TRI) const override
restoreCalleeSavedRegisters - Issues instruction(s) to restore all callee saved registers and returns...
void processFunctionBeforeFrameFinalized(MachineFunction &MF, RegScavenger *RS) const override
processFunctionBeforeFrameFinalized - This method is called immediately before the specified function...
MachineBasicBlock::iterator eliminateCallFramePseudoInstr(MachineFunction &MF, MachineBasicBlock &MBB, MachineBasicBlock::iterator I) const override
This method is called during prolog/epilog code insertion to eliminate call frame setup and destroy p...
ARCFrameLowering(const ARCSubtarget &st)
void determineCalleeSaves(MachineFunction &MF, BitVector &SavedRegs, RegScavenger *RS) const override
Add explicit callee save registers.
void emitPrologue(MachineFunction &MF, MachineBasicBlock &MBB) const override
Insert Prologue into the function.
void emitEpilogue(MachineFunction &MF, MachineBasicBlock &MBB) const override
Insert Epilogue into the function.
bool hasFP(const MachineFunction &MF) const override
hasFP - Return true if the specified function should have a dedicated frame pointer register.
bool spillCalleeSavedRegisters(MachineBasicBlock &MBB, MachineBasicBlock::iterator MI, ArrayRef< CalleeSavedInfo > CSI, const TargetRegisterInfo *TRI) const override
spillCalleeSavedRegisters - Issues instruction(s) to spill all callee saved registers and returns tru...
bool assignCalleeSavedSpillSlots(llvm::MachineFunction &, const llvm::TargetRegisterInfo *, std::vector< llvm::CalleeSavedInfo > &) const override
ArrayRef - Represent a constant reference to an array (0 or more elements consecutively in memory),...
Definition: ArrayRef.h:41
MutableArrayRef - Represent a mutable reference to an array (0 or more elements consecutively in memo...
Definition: ArrayRef.h:307
Information about stack frame layout on the target.
TargetRegisterInfo base class - We assume that the target defines a static array of TargetRegisterDes...
This is an optimization pass for GlobalISel generic memory operations.
Definition: AddressRanges.h:18
This struct is a compact representation of a valid (non-zero power of two) alignment.
Definition: Alignment.h:39