Move JIT infrastructure into it's own directory

This is a starting point to clean up some of the
code base for the JIT.

Change-Id: I388ce8df7d4ab87095e227cf36643f4be2594b7d
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>

1 files changed, 104 insertions, 0 deletions

diff --git a/src/qml/jit/qv4regalloc_p.h b/src/qml/jit/qv4regalloc_p.h
new file mode 100644
index 0000000000..c6dfa9f11a
--- /dev/null
+++ b/src/qml/jit/qv4regalloc_p.h
@@ -0,0 +1,104 @@
+/****************************************************************************
+**
+** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the V4VM module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and Digia.  For licensing terms and
+** conditions see http://qt.digia.com/licensing.  For further information
+** use the contact form at http://qt.digia.com/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Digia gives you certain additional
+** rights.  These rights are described in the Digia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+#ifndef QV4REGALLOC_P_H
+#define QV4REGALLOC_P_H
+
+#include "qv4global_p.h"
+#include "qv4isel_p.h"
+#include "qv4ssa_p.h"
+
+#include <config.h>
+
+QT_BEGIN_NAMESPACE
+
+namespace QQmlJS {
+namespace MASM {
+
+class RegAllocInfo;
+
+class RegisterAllocator
+{
+    typedef V4IR::LifeTimeInterval LifeTimeInterval;
+
+    QVector<int> _normalRegisters;
+    QVector<int> _fpRegisters;
+    QScopedPointer<RegAllocInfo> _info;
+
+    QVector<LifeTimeInterval> _fixedRegisterRanges, _fixedFPRegisterRanges;
+
+    QVector<LifeTimeInterval> _unhandled, _active, _inactive, _handled;
+
+    QHash<V4IR::Temp, int> _lastAssignedRegister;
+    QHash<V4IR::Temp, int> _assignedSpillSlots;
+    QVector<int> _activeSpillSlots;
+
+    Q_DISABLE_COPY(RegisterAllocator)
+
+public:
+    RegisterAllocator(const QVector<int> &normalRegisters, const QVector<int> &fpRegisters);
+    ~RegisterAllocator();
+
+    void run(V4IR::Function *function, const V4IR::Optimizer &opt);
+
+private:
+    void prepareRanges();
+    void linearScan();
+    void tryAllocateFreeReg(LifeTimeInterval &current, const int position);
+    void allocateBlockedReg(LifeTimeInterval &current, const int position);
+    void longestAvailableReg(const QVector<int> &nextUses, int &reg, int &nextUsePos_reg,
+                             int lastUse) const;
+    int nextIntersection(const LifeTimeInterval &current, const LifeTimeInterval &another,
+                         const int position) const;
+    int nextUse(const V4IR::Temp &t, int startPosition) const;
+    void split(LifeTimeInterval &current, int beforePosition, bool skipOptionalRegisterUses =false);
+    void splitInactiveAtEndOfLifetimeHole(int reg, bool isFPReg, int position);
+    void assignSpillSlot(const V4IR::Temp &t, int startPos, int endPos);
+    void resolve(V4IR::Function *function, const V4IR::Optimizer &opt);
+
+    void dump() const;
+};
+
+} // end of namespace MASM
+} // end of namespace QQmlJS
+
+QT_END_NAMESPACE
+
+#endif // QV4REGALLOC_P_H