1//=- LoongArchMachineFunctionInfo.h - LoongArch machine function info -----===//
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 file declares LoongArch-specific per-machine-function information.
10//
11//===----------------------------------------------------------------------===//
12
13#ifndef LLVM_LIB_TARGET_LOONGARCH_LOONGARCHMACHINEFUNCTIONINFO_H
14#define LLVM_LIB_TARGET_LOONGARCH_LOONGARCHMACHINEFUNCTIONINFO_H
15
16#include "LoongArchSubtarget.h"
17#include "llvm/CodeGen/MachineFrameInfo.h"
18#include "llvm/CodeGen/MachineFunction.h"
19
20namespace llvm {
21
22/// LoongArchMachineFunctionInfo - This class is derived from
23/// MachineFunctionInfo and contains private LoongArch-specific information for
24/// each MachineFunction.
25class LoongArchMachineFunctionInfo : public MachineFunctionInfo {
26private:
27 /// FrameIndex for start of varargs area
28 int VarArgsFrameIndex = 0;
29 /// Size of the save area used for varargs
30 int VarArgsSaveSize = 0;
31
32 /// Size of stack frame to save callee saved registers
33 unsigned CalleeSavedStackSize = 0;
34
35 /// FrameIndex of the spill slot when there is no scavenged register in
36 /// insertIndirectBranch.
37 int BranchRelaxationSpillFrameIndex = -1;
38
39 /// Registers that have been sign extended from i32.
40 SmallVector<Register, 8> SExt32Registers;
41
42 /// Pairs of `jr` instructions and corresponding JTI operands, used for the
43 /// `annotate-tablejump` option.
44 SmallVector<std::pair<MachineInstr *, int>, 4> JumpInfos;
45
46public:
47 LoongArchMachineFunctionInfo(const Function &F,
48 const TargetSubtargetInfo *STI) {}
49
50 MachineFunctionInfo *
51 clone(BumpPtrAllocator &Allocator, MachineFunction &DestMF,
52 const DenseMap<MachineBasicBlock *, MachineBasicBlock *> &Src2DstMBB)
53 const override {
54 return DestMF.cloneInfo<LoongArchMachineFunctionInfo>(Old: *this);
55 }
56
57 int getVarArgsFrameIndex() const { return VarArgsFrameIndex; }
58 void setVarArgsFrameIndex(int Index) { VarArgsFrameIndex = Index; }
59
60 unsigned getVarArgsSaveSize() const { return VarArgsSaveSize; }
61 void setVarArgsSaveSize(int Size) { VarArgsSaveSize = Size; }
62
63 unsigned getCalleeSavedStackSize() const { return CalleeSavedStackSize; }
64 void setCalleeSavedStackSize(unsigned Size) { CalleeSavedStackSize = Size; }
65
66 int getBranchRelaxationSpillFrameIndex() {
67 return BranchRelaxationSpillFrameIndex;
68 }
69 void setBranchRelaxationSpillFrameIndex(int Index) {
70 BranchRelaxationSpillFrameIndex = Index;
71 }
72
73 void addSExt32Register(Register Reg) { SExt32Registers.push_back(Elt: Reg); }
74
75 bool isSExt32Register(Register Reg) const {
76 return is_contained(Range: SExt32Registers, Element: Reg);
77 }
78
79 void setJumpInfo(MachineInstr *JrMI, int JTIIdx) {
80 JumpInfos.push_back(Elt: std::make_pair(x&: JrMI, y&: JTIIdx));
81 }
82 unsigned getJumpInfoSize() { return JumpInfos.size(); }
83 MachineInstr *getJumpInfoJrMI(unsigned Idx) { return JumpInfos[Idx].first; }
84 int getJumpInfoJTIIndex(unsigned Idx) { return JumpInfos[Idx].second; }
85};
86
87} // end namespace llvm
88
89#endif // LLVM_LIB_TARGET_LOONGARCH_LOONGARCHMACHINEFUNCTIONINFO_H
90