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diff --git a/src/qmlcompiler/qqmljsoptimizations_p.h b/src/qmlcompiler/qqmljsoptimizations_p.h
new file mode 100644
index 0000000000..0d7091ab49
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+++ b/src/qmlcompiler/qqmljsoptimizations_p.h
@@ -0,0 +1,65 @@
+// Copyright (C) 2024 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
+
+#ifndef QQMLJSOPTIMIZATIONS_P_H
+#define QQMLJSOPTIMIZATIONS_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+
+#include <private/qqmljscompilepass_p.h>
+
+QT_BEGIN_NAMESPACE
+
+class Q_QMLCOMPILER_EXPORT QQmlJSOptimizations : public QQmlJSCompilePass
+{
+public:
+    using Conversions = QSet<int>;
+
+    QQmlJSOptimizations(const QV4::Compiler::JSUnitGenerator *unitGenerator,
+                        const QQmlJSTypeResolver *typeResolver, QQmlJSLogger *logger,
+                        BasicBlocks basicBlocks, InstructionAnnotations annotations,
+                        QList<ObjectOrArrayDefinition> objectAndArrayDefinitions)
+        : QQmlJSCompilePass(unitGenerator, typeResolver, logger, basicBlocks, annotations),
+          m_objectAndArrayDefinitions{ objectAndArrayDefinitions }
+    {
+    }
+
+    ~QQmlJSOptimizations() = default;
+
+    BlocksAndAnnotations run(const Function *function, QQmlJS::DiagnosticMessage *error);
+
+private:
+    struct RegisterAccess
+    {
+        QList<QQmlJSScope::ConstPtr> trackedTypes;
+        QHash<int, QQmlJSScope::ConstPtr> typeReaders;
+        QHash<int, Conversions> registerReadersAndConversions;
+        int trackedRegister;
+    };
+
+    QV4::Moth::ByteCodeHandler::Verdict startInstruction(QV4::Moth::Instr::Type) override
+    {
+        return ProcessInstruction;
+    }
+    void endInstruction(QV4::Moth::Instr::Type) override { }
+
+    void populateBasicBlocks();
+    void populateReaderLocations();
+    void adjustTypes();
+    bool canMove(int instructionOffset, const RegisterAccess &access) const;
+
+    QHash<int, RegisterAccess> m_readerLocations;
+    QList<ObjectOrArrayDefinition> m_objectAndArrayDefinitions;
+};
+
+QT_END_NAMESPACE
+
+#endif // QQMLJSOPTIMIZATIONS_P_H