dfg/DFGPhase.h

   1 /*
   2  * Copyright (C) 2011, 2012 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,
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  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 DFGPhase_h
  27 #define DFGPhase_h
  28
  29 #if ENABLE(DFG_JIT)
  30
  31 #include "DFGCommon.h"
  32 #include "DFGGraph.h"
  33
  34 namespace JSC { namespace DFG {
  35
  36 class Phase {
  37 public:
  38     Phase(Graph& graph, const char* name)
  39         : m_graph(graph)
  40         , m_name(name)
  41     {
  42         beginPhase();
  43     }
  44
  45     ~Phase()
  46     {
  47         endPhase();
  48     }
  49
  50     const char* name() const { return m_name; }
  51
  52     Graph& graph() { return m_graph; }
  53
  54     // Each phase must have a run() method.
  55
  56 protected:
  57     // Things you need to have a DFG compiler phase.
  58     Graph& m_graph;
  59
  60     VM& vm() { return m_graph.m_vm; }
  61     CodeBlock* codeBlock() { return m_graph.m_codeBlock; }
  62     CodeBlock* profiledBlock() { return m_graph.m_profiledBlock; }
  63
  64     const char* m_name;
  65
  66 private:
  67     // Call these hooks when starting and finishing.
  68     void beginPhase();
  69     void endPhase();
  70 };
  71
  72 template<typename PhaseType>
  73 bool runAndLog(PhaseType& phase)
  74 {
  75     bool result = phase.run();
  76     if (result && logCompilationChanges(phase.graph().m_plan.mode))
  77         dataLogF("Phase %s changed the IR.\n", phase.name());
  78     return result;
  79 }
  80
  81 template<typename PhaseType>
  82 bool runPhase(Graph& graph)
  83 {
  84     PhaseType phase(graph);
  85     return runAndLog(phase);
  86 }
  87
  88 } } // namespace JSC::DFG
  89
  90 #endif // ENABLE(DFG_JIT)
  91
  92 #endif // DFGPhase_h
  93