dfg/DFGOSREntrypointCreationPhase.h

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  25
  26 #ifndef DFGOSREntrypointCreationPhase_h
  27 #define DFGOSREntrypointCreationPhase_h
  28
  29 #if ENABLE(DFG_JIT)
  30
  31 namespace JSC { namespace DFG {
  32
  33 class Graph;
  34
  35 // This phase is only for compilation pipelines that go through SSA, and that
  36 // do a specialized OSR entry compile. Currently that means FTL.
  37 //
  38 // Creates an OSR entrypoint that establishes all argument and local variable
  39 // values. This entrypoint only works for the Plan::osrEntryBytecodeIndex.
  40 // Unlike ordinary OSR entry into the DFG, this forces all variables slurped
  41 // in through OSR entry to appear TOP to the CFA. Hence this phase must be run
  42 // early - before doing any CFA. But this also does some additional hacks that
  43 // require this to run before unification.
  44
  45 bool performOSREntrypointCreation(Graph&);
  46
  47 } } // namespace JSC::DFG
  48
  49 #endif // ENABLE(DFG_JIT)
  50
  51 #endif // DFGOSREntrypointCreationPhase_h
  52