SIFrameLowering.h
3.05 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
//===--------------------- SIFrameLowering.h --------------------*- 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_AMDGPU_SIFRAMELOWERING_H
#define LLVM_LIB_TARGET_AMDGPU_SIFRAMELOWERING_H
#include "AMDGPUFrameLowering.h"
namespace llvm {
class SIInstrInfo;
class SIMachineFunctionInfo;
class SIRegisterInfo;
class GCNSubtarget;
class SIFrameLowering final : public AMDGPUFrameLowering {
public:
SIFrameLowering(StackDirection D, Align StackAl, int LAO,
Align TransAl = Align(1))
: AMDGPUFrameLowering(D, StackAl, LAO, TransAl) {}
~SIFrameLowering() override = default;
void emitEntryFunctionPrologue(MachineFunction &MF,
MachineBasicBlock &MBB) const;
void emitPrologue(MachineFunction &MF,
MachineBasicBlock &MBB) const override;
void emitEpilogue(MachineFunction &MF,
MachineBasicBlock &MBB) const override;
int getFrameIndexReference(const MachineFunction &MF, int FI,
Register &FrameReg) const override;
void determineCalleeSaves(MachineFunction &MF, BitVector &SavedRegs,
RegScavenger *RS = nullptr) const override;
void determineCalleeSavesSGPR(MachineFunction &MF, BitVector &SavedRegs,
RegScavenger *RS = nullptr) const;
bool
assignCalleeSavedSpillSlots(MachineFunction &MF,
const TargetRegisterInfo *TRI,
std::vector<CalleeSavedInfo> &CSI) const override;
bool isSupportedStackID(TargetStackID::Value ID) const override;
void processFunctionBeforeFrameFinalized(
MachineFunction &MF,
RegScavenger *RS = nullptr) const override;
MachineBasicBlock::iterator
eliminateCallFramePseudoInstr(MachineFunction &MF,
MachineBasicBlock &MBB,
MachineBasicBlock::iterator MI) const override;
private:
void emitEntryFunctionFlatScratchInit(MachineFunction &MF,
MachineBasicBlock &MBB,
MachineBasicBlock::iterator I,
const DebugLoc &DL,
Register ScratchWaveOffsetReg) const;
Register getEntryFunctionReservedScratchRsrcReg(MachineFunction &MF) const;
void emitEntryFunctionScratchRsrcRegSetup(
MachineFunction &MF, MachineBasicBlock &MBB,
MachineBasicBlock::iterator I, const DebugLoc &DL,
Register PreloadedPrivateBufferReg, Register ScratchRsrcReg,
Register ScratchWaveOffsetReg) const;
public:
bool hasFP(const MachineFunction &MF) const override;
bool requiresStackPointerReference(const MachineFunction &MF) const;
};
} // end namespace llvm
#endif // LLVM_LIB_TARGET_AMDGPU_SIFRAMELOWERING_H