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
|
// SPDX-License-Identifier: GPL-3.0-or-later
#ifndef RCC_CODEGEN_SPILLER_H
#define RCC_CODEGEN_SPILLER_H
#include "rcc/CodeGen/LiveRangeEdit.h"
#include "rcc/CodeGen/MachineFunctionAnalysisManager.h"
#include "rcc/CodeGen/TargetRegisterAllocationInfo.h"
#include <optional>
#include <vector>
namespace rcc {
class Spiller final {
public:
Spiller(MachineFunction &Function, const TargetDescription &Target,
const TargetRegisterAllocationInfo &TargetInfo, VirtRegMap &Mapping,
bool EnableRematerialization = true,
MachineFunctionAnalysisManager *ActionAnalyses = nullptr)
: Function(&Function), Target(&Target), TargetInfo(&TargetInfo), Mapping(&Mapping),
Edit(Function, Target, Mapping), EnableRematerialization(EnableRematerialization),
ActionAnalyses(ActionAnalyses) {}
[[nodiscard]] Expected<std::vector<Register>> spill(Register VirtualReg);
private:
[[nodiscard]] Expected<std::vector<Register>> spillAtInstructions(Register VirtualReg);
[[nodiscard]] Expected<void> spillLiveIn(Register VirtualReg, RegisterClassID Class,
FrameIndex StackSlot);
[[nodiscard]] Expected<std::optional<std::vector<Register>>>
tryRematerialize(Register VirtualReg);
MachineFunction *Function;
const TargetDescription *Target;
const TargetRegisterAllocationInfo *TargetInfo;
VirtRegMap *Mapping;
LiveRangeEdit Edit;
bool EnableRematerialization;
MachineFunctionAnalysisManager *ActionAnalyses;
};
} // namespace rcc
#endif // RCC_CODEGEN_SPILLER_H
|
