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Type safety basically. JITs can produce good code which performs very well, but it still must check that the data it has is of the type it expects. A good JIT m
by curiousdannii 14y ago
Type safety basically. JITs can produce good code which performs very well, but it still must check that the data it has is of the type it expects. A good JIT may only check occasionally, but it still must check. asm.js can guarantee that its data's types cannot change through static analysis.