Fast and Dynamic
summary
Claim: the performance gap between static and dynamic languages is closing through JIT techniques and smarter analyses. Evidence: hidden classes (maps), inline caches and type feedback power V8/Crankshaft; Firefox adds hybrid type inference and beats Chrome on some benchmarks; Self-era systems reach “up to half the speed of optimized C.” New work builds a small JS VM called Higgs VM and implements basic block versioning, which generates type-specialized block versions, cuts dynamic type tests significantly, causes little code blowup and small compilation cost.
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chapters (14)
- 0:00Introduction
- 0:30Programming languages
- 4:52Features
- 6:33Garbage Collection
- 7:28Dynamic Type Tests
- 8:38Dynamic Properties
- 10:11Type Tags
- 14:55lisp
- 17:08scheme
- 17:55xerox spark
- 24:51block versioning
- 29:30multiworld approach
- 30:18the future
- 34:30from list
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