JavaScript:SpiderMonkey:Context Threading

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threading is an interpreter implementation technique that aligns the interpreter's virtual PC with the real PC, to optimize branch prediction. SpiderMonkey needs it. Challenges:

  • Preserving the SpiderMonkey API.
  • Recoding [1] as necessary to improve icache utilization.
  • Dealing with goto out; and other such jumps in the interpreter.

[2]

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