dfg/DFGInsertionSet.h

   1 /*
   2  * Copyright (C) 2012, 2013, 2014 Apple Inc. All rights reserved.
   3  *
   4  * Redistribution and use in source and binary forms, with or without
   5  * modification, are permitted provided that the following conditions
   6  * are met:
   7  * 1. Redistributions of source code must retain the above copyright
   8  *    notice, this list of conditions and the following disclaimer.
   9  * 2. Redistributions in binary form must reproduce the above copyright
  10  *    notice, this list of conditions and the following disclaimer in the
  11  *    documentation and/or other materials provided with the distribution.
  12  *
  13  * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
  14  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  16  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
  17  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  18  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  19  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  20  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
  21  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  23  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  24  */
  25
  26 #ifndef DFGInsertionSet_h
  27 #define DFGInsertionSet_h
  28
  29 #if ENABLE(DFG_JIT)
  30
  31 #include "DFGGraph.h"
  32 #include <wtf/Insertion.h>
  33 #include <wtf/Vector.h>
  34
  35 namespace JSC { namespace DFG {
  36
  37 typedef WTF::Insertion<Node*> Insertion;
  38
  39 class InsertionSet {
  40 public:
  41     InsertionSet(Graph& graph)
  42         : m_graph(graph)
  43     {
  44     }
  45
  46     Node* insert(const Insertion& insertion)
  47     {
  48         ASSERT(!m_insertions.size() || m_insertions.last().index() <= insertion.index());
  49         m_insertions.append(insertion);
  50         return insertion.element();
  51     }
  52
  53     Node* insert(size_t index, Node* element)
  54     {
  55         return insert(Insertion(index, element));
  56     }
  57
  58     template<typename... Params>
  59     Node* insertNode(size_t index, SpeculatedType type, Params... params)
  60     {
  61         return insert(index, m_graph.addNode(type, params...));
  62     }
  63
  64     Node* insertConstant(
  65         size_t index, NodeOrigin origin, JSValue value,
  66         NodeType op = JSConstant)
  67     {
  68         unsigned constantReg =
  69             m_graph.constantRegisterForConstant(value);
  70         return insertNode(
  71             index, speculationFromValue(value), op, origin, OpInfo(constantReg));
  72     }
  73
  74     Node* insertConstant(
  75         size_t index, CodeOrigin origin, JSValue value, NodeType op = JSConstant)
  76     {
  77         return insertConstant(index, NodeOrigin(origin), value, op);
  78     }
  79
  80     Edge insertConstantForUse(
  81         size_t index, NodeOrigin origin, JSValue value, UseKind useKind)
  82     {
  83         NodeType op;
  84         if (isDouble(useKind))
  85             op = DoubleConstant;
  86         else if (useKind == Int52RepUse)
  87             op = Int52Constant;
  88         else
  89             op = JSConstant;
  90         return Edge(insertConstant(index, origin, value, op), useKind);
  91     }
  92
  93     Edge insertConstantForUse(
  94         size_t index, CodeOrigin origin, JSValue value, UseKind useKind)
  95     {
  96         return insertConstantForUse(index, NodeOrigin(origin), value, useKind);
  97     }
  98
  99     void execute(BasicBlock* block)
 100     {
 101         executeInsertions(*block, m_insertions);
 102     }
 103 private:
 104     Graph& m_graph;
 105     Vector<Insertion, 8> m_insertions;
 106 };
 107
 108 } } // namespace JSC::DFG
 109
 110 #endif // ENABLE(DFG_JIT)
 111
 112 #endif // DFGInsertionSet_h
 113