VVMRegisterName.h

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// Copyright Epic Games, Inc. All Rights Reserved.
 
#pragma once
 
#if WITH_VERSE_VM || defined(__INTELLISENSE__)
 
#include "VerseVM/VVMBytecode.h"
#include "VerseVM/VVMBytecodeAnalysis.h"
 
namespace Verse
{
 
// Mapping from register index to name. VProcedures hold an array of such mappings.
struct FRegisterName
{
    FRegisterIndex Index;
    TWriteBarrier<VUniqueString> Name;
    BytecodeAnalysis::FLiveRange LiveRange;
 
    FRegisterName() = default;
 
    FRegisterName(FAccessContext InContext, FRegisterIndex InIndex, VUniqueString& InName)
        : Index(InIndex)
        , Name(InContext, InName)
    {
    }
 
    friend bool operator<(const FRegisterName& Left, const FRegisterName& Right)
    {
        if (Left.Index < Right.Index)
        {
            return true;
        }
        if (Right.Index < Left.Index)
        {
            return false;
        }
        if (Left.LiveRange < Right.LiveRange)
        {
            return true;
        }
        if (Right.LiveRange < Left.LiveRange)
        {
            return false;
        }
        // Nondeterministic, so do last.
        return Left.Name.Get() < Right.Name.Get();
    }
 
    template <typename TVisitor>
    friend void Visit(TVisitor& Visitor, FRegisterName& Value)
    {
        Visitor.Visit(Value.Index, TEXT("Index"));
        Visitor.Visit(Value.Name, TEXT("Name"));
        Visitor.Visit(Value.LiveRange, TEXT("LiveRange"));
    }
};
 
} // namespace Verse
 
#endif