LLVM 20.0.0git
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
20namespace llvm {
21
23private:
24 bool IsRegister = false; ///< True if location is a register.
25 unsigned Register = 0; ///< gcc/gdb register number.
26
27public:
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 MachineLocation() = default;
35 /// Create a direct register location.
36 explicit MachineLocation(unsigned R, bool Indirect = false)
37 : IsRegister(!Indirect), Register(R) {}
38
39 bool operator==(const MachineLocation &Other) const {
40 return IsRegister == Other.IsRegister && Register == Other.Register;
41 }
42
43 // Accessors.
44 /// \return true iff this is a register-indirect location.
45 bool isIndirect() const { return !IsRegister; }
46 bool isReg() const { return IsRegister; }
47 unsigned getReg() const { return Register; }
48 void setIsRegister(bool Is) { IsRegister = Is; }
49 void setRegister(unsigned R) { Register = R; }
50};
51
52inline bool operator!=(const MachineLocation &LHS, const MachineLocation &RHS) {
53 return !(LHS == RHS);
54}
55
56} // end namespace llvm
57
58#endif // LLVM_MC_MACHINELOCATION_H
Value * RHS
Value * LHS
unsigned getReg() const
void setRegister(unsigned R)
bool operator==(const MachineLocation &Other) const
MachineLocation(unsigned R, bool Indirect=false)
Create a direct register location.
void setIsRegister(bool Is)
Wrapper class representing virtual and physical registers.
Definition: Register.h:19
This is an optimization pass for GlobalISel generic memory operations.
Definition: AddressRanges.h:18
bool operator!=(uint64_t V1, const APInt &V2)
Definition: APInt.h:2052
@ Other
Any other memory.