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1 /*

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 */

26 #ifndef DFGPhase_h

27 #define DFGPhase_h

29 #if ENABLE(DFG_JIT)

31 #include "DFGCommon.h"

32 #include "DFGGraph.h"

34 namespace JSC { namespace DFG {

36 class Phase {

37 public:

     Phase(Graph& graph, const char* name)

39 : m_graph(graph)

40 , m_name(name)

41 {

42 beginPhase();

43 }

45 ~Phase()

46 {

47 endPhase();

48 }

     const char* name() const { return m_name; }

     Graph& graph() { return m_graph; }

54 // Each phase must have a run() method.

56 protected:

57 // Things you need to have a DFG compiler phase.

58 Graph& m_graph;

     VM& vm() { return m_graph.m_vm; }

     CodeBlock* codeBlock() { return m_graph.m_codeBlock; }

     CodeBlock* profiledBlock() { return m_graph.m_profiledBlock; }

64 const char* m_name;

66 private:

67 // Call these hooks when starting and finishing.

68 void beginPhase();

69 void endPhase();

71 CString m_graphDumpBeforePhase;

72 };

74 template<typename PhaseType>

 bool runAndLog(PhaseType& phase)

76 {

     bool result = phase.run();

     if (result && logCompilationChanges(phase.graph().m_plan.mode))

         dataLogF("Phase %s changed the IR.\n", phase.name());

80 return result;

81 }

83 template<typename PhaseType>

 bool runPhase(Graph& graph)

85 {

86 PhaseType phase(graph);

87 return runAndLog(phase);

88 }

90 } } // namespace JSC::DFG

92 #endif // ENABLE(DFG_JIT)

94 #endif // DFGPhase_h