LLVM 17.0.0git
LanaiFrameLowering.h
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1//===-- LanaiFrameLowering.h - Define frame lowering for Lanai --*- 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 Lanai-specific bits of TargetFrameLowering class.
10//
11//===----------------------------------------------------------------------===//
12
13#ifndef LLVM_LIB_TARGET_LANAI_LANAIFRAMELOWERING_H
14#define LLVM_LIB_TARGET_LANAI_LANAIFRAMELOWERING_H
15
17
18namespace llvm {
19
20class BitVector;
21class LanaiSubtarget;
22
24private:
25 void determineFrameLayout(MachineFunction &MF) const;
26 void replaceAdjDynAllocPseudo(MachineFunction &MF) const;
27
28protected:
30
31public:
32 explicit LanaiFrameLowering(const LanaiSubtarget &Subtarget)
34 /*StackAlignment=*/Align(8),
35 /*LocalAreaOffset=*/0),
36 STI(Subtarget) {}
37
38 // emitProlog/emitEpilog - These methods insert prolog and epilog code into
39 // the function.
40 void emitPrologue(MachineFunction &MF, MachineBasicBlock &MBB) const override;
41 void emitEpilogue(MachineFunction &MF, MachineBasicBlock &MBB) const override;
42
45 MachineBasicBlock::iterator I) const override;
46
47 bool hasFP(const MachineFunction & /*MF*/) const override { return true; }
48
50 RegScavenger *RS = nullptr) const override;
51};
52
53} // namespace llvm
54
55#endif // LLVM_LIB_TARGET_LANAI_LANAIFRAMELOWERING_H
MachineBasicBlock & MBB
#define I(x, y, z)
Definition: MD5.cpp:58
void emitEpilogue(MachineFunction &MF, MachineBasicBlock &MBB) const override
void emitPrologue(MachineFunction &MF, MachineBasicBlock &MBB) const override
emitProlog/emitEpilog - These methods insert prolog and epilog code into the function.
const LanaiSubtarget & STI
bool hasFP(const MachineFunction &) const override
hasFP - Return true if the specified function should have a dedicated frame pointer register.
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...
LanaiFrameLowering(const LanaiSubtarget &Subtarget)
void determineCalleeSaves(MachineFunction &MF, BitVector &SavedRegs, RegScavenger *RS=nullptr) const override
This method determines which of the registers reported by TargetRegisterInfo::getCalleeSavedRegs() sh...
Information about stack frame layout on the target.
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