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Diffstat (limited to 'contrib/llvm-project/llvm/include/llvm/MC/MachineLocation.h')
-rw-r--r-- | contrib/llvm-project/llvm/include/llvm/MC/MachineLocation.h | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/contrib/llvm-project/llvm/include/llvm/MC/MachineLocation.h b/contrib/llvm-project/llvm/include/llvm/MC/MachineLocation.h new file mode 100644 index 000000000000..5872540e6104 --- /dev/null +++ b/contrib/llvm-project/llvm/include/llvm/MC/MachineLocation.h @@ -0,0 +1,58 @@ +//===- llvm/MC/MachineLocation.h --------------------------------*- 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 +// +//===----------------------------------------------------------------------===// +// The MachineLocation class is used to represent a simple location in a machine +// frame. Locations will be one of two forms; a register or an address formed +// from a base address plus an offset. Register indirection can be specified by +// explicitly passing an offset to the constructor. +//===----------------------------------------------------------------------===// + +#ifndef LLVM_MC_MACHINELOCATION_H +#define LLVM_MC_MACHINELOCATION_H + +#include <cstdint> +#include <cassert> + +namespace llvm { + +class MachineLocation { +private: + bool IsRegister = false; ///< True if location is a register. + unsigned Register = 0; ///< gcc/gdb register number. + +public: + enum : uint32_t { + // The target register number for an abstract frame pointer. The value is + // an arbitrary value that doesn't collide with any real target register. + VirtualFP = ~0U + }; + + MachineLocation() = default; + /// Create a direct register location. + explicit MachineLocation(unsigned R, bool Indirect = false) + : IsRegister(!Indirect), Register(R) {} + + bool operator==(const MachineLocation &Other) const { + return IsRegister == Other.IsRegister && Register == Other.Register; + } + + // Accessors. + /// \return true iff this is a register-indirect location. + bool isIndirect() const { return !IsRegister; } + bool isReg() const { return IsRegister; } + unsigned getReg() const { return Register; } + void setIsRegister(bool Is) { IsRegister = Is; } + void setRegister(unsigned R) { Register = R; } +}; + +inline bool operator!=(const MachineLocation &LHS, const MachineLocation &RHS) { + return !(LHS == RHS); +} + +} // end namespace llvm + +#endif // LLVM_MC_MACHINELOCATION_H |