Three JIT options on Firefox4 : jitprofiling, methodjit, and tracejit
On Firefox4, there are three JIT options:
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javascript.options.jitprofiling.*
- Tuning JIT compiler heuristics; Profile to decide using tracegit or using methodjit.
javascript.options.methodjit.*
- JägerMonkey; Baseline JIT compiler.
javascript.options.tracejit.*
- TraceMonkey; native-code compilation.
javascript.options.*.content
- Whether it apply to webpages or not
javascript.options.*.chrome
- Whether it apply to firefox's interface (XUL) or not
Note: javascript.options.jit.*
are replaced with javascript.options.tracejit.*
.