/Users/buildslave/jenkins/workspace/clang-stage2-coverage-R/llvm/include/llvm/MC/MachineLocation.h
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1 | | //===- llvm/MC/MachineLocation.h --------------------------------*- 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 | | // The MachineLocation class is used to represent a simple location in a machine |
9 | | // frame. Locations will be one of two forms; a register or an address formed |
10 | | // from a base address plus an offset. Register indirection can be specified by |
11 | | // explicitly passing an offset to the constructor. |
12 | | //===----------------------------------------------------------------------===// |
13 | | |
14 | | #ifndef LLVM_MC_MACHINELOCATION_H |
15 | | #define LLVM_MC_MACHINELOCATION_H |
16 | | |
17 | | #include <cstdint> |
18 | | #include <cassert> |
19 | | |
20 | | namespace llvm { |
21 | | |
22 | | class MachineLocation { |
23 | | private: |
24 | | bool IsRegister = false; ///< True if location is a register. |
25 | | unsigned Register = 0; ///< gcc/gdb register number. |
26 | | |
27 | | public: |
28 | | enum : uint32_t { |
29 | | // The target register number for an abstract frame pointer. The value is |
30 | | // an arbitrary value that doesn't collide with any real target register. |
31 | | VirtualFP = ~0U |
32 | | }; |
33 | | |
34 | 4.21k | MachineLocation() = default; |
35 | | /// Create a direct register location. |
36 | | explicit MachineLocation(unsigned R, bool Indirect = false) |
37 | 2.73k | : IsRegister(!Indirect), Register(R) {} |
38 | | |
39 | 660 | bool operator==(const MachineLocation &Other) const { |
40 | 660 | return IsRegister == Other.IsRegister && Register == Other.Register658 ; |
41 | 660 | } |
42 | | |
43 | | // Accessors. |
44 | | /// \return true iff this is a register-indirect location. |
45 | 1.77k | bool isIndirect() const { return !IsRegister; } |
46 | 0 | bool isReg() const { return IsRegister; } |
47 | 2.82k | unsigned getReg() const { return Register; } |
48 | 0 | void setIsRegister(bool Is) { IsRegister = Is; } |
49 | 0 | void setRegister(unsigned R) { Register = R; } |
50 | | }; |
51 | | |
52 | 0 | inline bool operator!=(const MachineLocation &LHS, const MachineLocation &RHS) { |
53 | 0 | return !(LHS == RHS); |
54 | 0 | } |
55 | | |
56 | | } // end namespace llvm |
57 | | |
58 | | #endif // LLVM_MC_MACHINELOCATION_H |