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to reflect the new license. We understand that people may be surprised that we're moving the header entirely to discuss the new license. We checked this carefully with the Foundation's lawyer and we believe this is the correct approach. Essentially, all code in the project is now made available by the LLVM project under our new license, so you will see that the license headers include that license only. Some of our contributors have contributed code under our old license, and accordingly, we have retained a copy of our old license notice in the top-level files in each project and repository. llvm-svn: 351636
59 lines
2.0 KiB
C++
59 lines
2.0 KiB
C++
//===- 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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