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
81
82
83
84
85
86
87
88
89
90
91
92
93
|
//=== SystemZMachineFunctionInfo.h - SystemZ machine function info -*- 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_SYSTEMZ_SYSTEMZMACHINEFUNCTIONINFO_H
#define LLVM_LIB_TARGET_SYSTEMZ_SYSTEMZMACHINEFUNCTIONINFO_H
#include "llvm/CodeGen/MachineFunction.h"
namespace llvm {
namespace SystemZ {
// A struct to hold the low and high GPR registers to be saved/restored as
// well as the offset into the register save area of the low register.
struct GPRRegs {
unsigned LowGPR;
unsigned HighGPR;
unsigned GPROffset;
GPRRegs() : LowGPR(0), HighGPR(0), GPROffset(0) {}
};
}
class SystemZMachineFunctionInfo : public MachineFunctionInfo {
virtual void anchor();
SystemZ::GPRRegs SpillGPRRegs;
SystemZ::GPRRegs RestoreGPRRegs;
Register VarArgsFirstGPR;
Register VarArgsFirstFPR;
unsigned VarArgsFrameIndex;
unsigned RegSaveFrameIndex;
int FramePointerSaveIndex;
unsigned NumLocalDynamics;
public:
explicit SystemZMachineFunctionInfo(MachineFunction &MF)
: VarArgsFirstGPR(0), VarArgsFirstFPR(0), VarArgsFrameIndex(0),
RegSaveFrameIndex(0), FramePointerSaveIndex(0), NumLocalDynamics(0) {}
// Get and set the first and last call-saved GPR that should be saved by
// this function and the SP offset for the STMG. These are 0 if no GPRs
// need to be saved or restored.
SystemZ::GPRRegs getSpillGPRRegs() const { return SpillGPRRegs; }
void setSpillGPRRegs(Register Low, Register High, unsigned Offs) {
SpillGPRRegs.LowGPR = Low;
SpillGPRRegs.HighGPR = High;
SpillGPRRegs.GPROffset = Offs;
}
// Get and set the first and last call-saved GPR that should be restored by
// this function and the SP offset for the LMG. These are 0 if no GPRs
// need to be saved or restored.
SystemZ::GPRRegs getRestoreGPRRegs() const { return RestoreGPRRegs; }
void setRestoreGPRRegs(Register Low, Register High, unsigned Offs) {
RestoreGPRRegs.LowGPR = Low;
RestoreGPRRegs.HighGPR = High;
RestoreGPRRegs.GPROffset = Offs;
}
// Get and set the number of fixed (as opposed to variable) arguments
// that are passed in GPRs to this function.
Register getVarArgsFirstGPR() const { return VarArgsFirstGPR; }
void setVarArgsFirstGPR(Register GPR) { VarArgsFirstGPR = GPR; }
// Likewise FPRs.
Register getVarArgsFirstFPR() const { return VarArgsFirstFPR; }
void setVarArgsFirstFPR(Register FPR) { VarArgsFirstFPR = FPR; }
// Get and set the frame index of the first stack vararg.
unsigned getVarArgsFrameIndex() const { return VarArgsFrameIndex; }
void setVarArgsFrameIndex(unsigned FI) { VarArgsFrameIndex = FI; }
// Get and set the frame index of the register save area
// (i.e. the incoming stack pointer).
unsigned getRegSaveFrameIndex() const { return RegSaveFrameIndex; }
void setRegSaveFrameIndex(unsigned FI) { RegSaveFrameIndex = FI; }
// Get and set the frame index of where the old frame pointer is stored.
int getFramePointerSaveIndex() const { return FramePointerSaveIndex; }
void setFramePointerSaveIndex(int Idx) { FramePointerSaveIndex = Idx; }
// Count number of local-dynamic TLS symbols used.
unsigned getNumLocalDynamicTLSAccesses() const { return NumLocalDynamics; }
void incNumLocalDynamicTLSAccesses() { ++NumLocalDynamics; }
};
} // end namespace llvm
#endif
|
