59 lines
2.0 KiB
C
59 lines
2.0 KiB
C
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//===- llvm/MC/MachineLocation.h --------------------------------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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// The MachineLocation class is used to represent a simple location in a machine
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// frame. Locations will be one of two forms; a register or an address formed
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// from a base address plus an offset. Register indirection can be specified by
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// explicitly passing an offset to the constructor.
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_MC_MACHINELOCATION_H
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#define LLVM_MC_MACHINELOCATION_H
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#include <cstdint>
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#include <cassert>
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namespace llvm {
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class MachineLocation {
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private:
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bool IsRegister = false; ///< True if location is a register.
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unsigned Register = 0; ///< gcc/gdb register number.
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public:
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enum : uint32_t {
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// The target register number for an abstract frame pointer. The value is
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// an arbitrary value that doesn't collide with any real target register.
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VirtualFP = ~0U
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};
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MachineLocation() = default;
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/// Create a direct register location.
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explicit MachineLocation(unsigned R, bool Indirect = false)
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: IsRegister(!Indirect), Register(R) {}
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bool operator==(const MachineLocation &Other) const {
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return IsRegister == Other.IsRegister && Register == Other.Register;
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}
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// Accessors.
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/// \return true iff this is a register-indirect location.
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bool isIndirect() const { return !IsRegister; }
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bool isReg() const { return IsRegister; }
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unsigned getReg() const { return Register; }
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void setIsRegister(bool Is) { IsRegister = Is; }
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void setRegister(unsigned R) { Register = R; }
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};
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inline bool operator!=(const MachineLocation &LHS, const MachineLocation &RHS) {
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return !(LHS == RHS);
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}
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} // end namespace llvm
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#endif // LLVM_MC_MACHINELOCATION_H
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