webkitgtk-2.4.11webkitgtk-2.4.11

1 files changed, 0 insertions, 181 deletions

diff --git a/Source/JavaScriptCore/bytecode/BytecodeKills.h b/Source/JavaScriptCore/bytecode/BytecodeKills.h
deleted file mode 100644
index d073ded25..000000000
--- a/Source/JavaScriptCore/bytecode/BytecodeKills.h
+++ /dev/null
@@ -1,181 +0,0 @@
-/*
- * Copyright (C) 2015 Apple Inc. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
- * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
- * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
- * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
- * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
- * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
- * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
- * THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#ifndef BytecodeKills_h
-#define BytecodeKills_h
-
-#include "CodeBlock.h"
-#include <wtf/FastBitVector.h>
-
-namespace JSC {
-
-class BytecodeLivenessAnalysis;
-
-class BytecodeKills {
-    WTF_MAKE_FAST_ALLOCATED;
-public:
-    BytecodeKills()
-        : m_codeBlock(nullptr)
-    {
-    }
-    
-    // By convention, we say that non-local operands are never killed.
-    bool operandIsKilled(unsigned bytecodeIndex, int operand) const
-    {
-        ASSERT_WITH_SECURITY_IMPLICATION(bytecodeIndex < m_codeBlock->instructions().size());
-        VirtualRegister reg(operand);
-        if (reg.isLocal())
-            return m_killSets[bytecodeIndex].contains(operand);
-        return false;
-    }
-    
-    bool operandIsKilled(Instruction* instruction, int operand) const
-    {
-        return operandIsKilled(instruction - m_codeBlock->instructions().begin(), operand);
-    }
-    
-    template<typename Functor>
-    void forEachOperandKilledAt(unsigned bytecodeIndex, const Functor& functor) const
-    {
-        ASSERT_WITH_SECURITY_IMPLICATION(bytecodeIndex < m_codeBlock->instructions().size());
-        m_killSets[bytecodeIndex].forEachLocal(
-            [&] (unsigned local) {
-                functor(virtualRegisterForLocal(local));
-            });
-    }
-    
-    template<typename Functor>
-    void forEachOperandKilledAt(Instruction* pc, const Functor& functor) const
-    {
-        forEachOperandKilledAt(pc - m_codeBlock->instructions().begin(), functor);
-    }
-    
-private:
-    friend class BytecodeLivenessAnalysis;
-
-    class KillSet {
-    public:
-        KillSet()
-            : m_word(0)
-        {
-        }
-
-        ~KillSet()
-        {
-            if (hasVector())
-                delete vector();
-        }
-        
-        void add(unsigned local)
-        {
-            if (isEmpty()) {
-                setOneItem(local);
-                return;
-            }
-            if (hasOneItem()) {
-                ASSERT(oneItem() != local);
-                Vector<unsigned>* vector = new Vector<unsigned>();
-                vector->append(oneItem());
-                vector->append(local);
-                setVector(vector);
-                return;
-            }
-            ASSERT(!vector()->contains(local));
-            vector()->append(local);
-        }
-        
-        template<typename Functor>
-        void forEachLocal(const Functor& functor)
-        {
-            if (isEmpty())
-                return;
-            if (hasOneItem()) {
-                functor(oneItem());
-                return;
-            }
-            for (unsigned local : *vector())
-                functor(local);
-        }
-        
-        bool contains(unsigned expectedLocal)
-        {
-            if (isEmpty())
-                return false;
-            if (hasOneItem())
-                return oneItem() == expectedLocal;
-            for (unsigned local : *vector()) {
-                if (local == expectedLocal)
-                    return true;
-            }
-            return false;
-        }
-        
-    private:
-        bool isEmpty() const
-        {
-            return !m_word;
-        }
-        
-        bool hasOneItem() const
-        {
-            return m_word & 1;
-        }
-        
-        unsigned oneItem() const
-        {
-            return m_word >> 1;
-        }
-        
-        void setOneItem(unsigned value)
-        {
-            m_word = (value << 1) | 1;
-        }
-        
-        bool hasVector() const
-        {
-            return !isEmpty() && !hasOneItem();
-        }
-        
-        Vector<unsigned>* vector()
-        {
-            return bitwise_cast<Vector<unsigned>*>(m_word);
-        }
-        
-        void setVector(Vector<unsigned>* value)
-        {
-            m_word = bitwise_cast<uintptr_t>(value);
-        }
-        
-        uintptr_t m_word;
-    };
-    
-    CodeBlock* m_codeBlock;
-    std::unique_ptr<KillSet[]> m_killSets;
-};
-
-} // namespace JSC
-
-#endif // BytecodeKills_h
-