JavaScriptCore-1218.34.tar.gz

[apple/javascriptcore.git] / dfg / DFGPhase.h

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#ifndef DFGPhase_h
#define DFGPhase_h

#include <wtf/Platform.h>

#if ENABLE(DFG_JIT)

#include "DFGCommon.h"
#include "DFGGraph.h"

namespace JSC { namespace DFG {

class Phase {
public:
    Phase(Graph& graph, const char* name)
        : m_graph(graph)
        , m_name(name)
    {
        beginPhase();
    }
    
    ~Phase()
    {
        endPhase();
    }
    
    const char* name() const { return m_name; }
    
    // Each phase must have a run() method.
    
protected:
    // Things you need to have a DFG compiler phase.
    Graph& m_graph;
    
    VM& vm() { return m_graph.m_vm; }
    CodeBlock* codeBlock() { return m_graph.m_codeBlock; }
    CodeBlock* profiledBlock() { return m_graph.m_profiledBlock; }
    
    const char* m_name;
    
private:
    // Call these hooks when starting and finishing.
    void beginPhase();
    void endPhase();
};

template<typename PhaseType>
bool runAndLog(PhaseType& phase)
{
    bool result = phase.run();
    if (result && logCompilationChanges())
        dataLogF("Phase %s changed the IR.\n", phase.name());
    return result;
}

template<typename PhaseType>
bool runPhase(Graph& graph)
{
    PhaseType phase(graph);
    return runAndLog(phase);
}

} } // namespace JSC::DFG

#endif // ENABLE(DFG_JIT)

#endif // DFGPhase_h