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A comment on 21compilers and 3 orders of magnitude in 60 minutes [pdf]. Parent comment
JavaScript compiler in Chrome, Node.
Multi-target (7), multi-tier JIT. Optimizations mix of classical stuff and dynamic language stuff from Smalltalk.
Multiple generations of optimization and IRs. Always adjusting for sweet spot of runtime perf vs. compile time, memory, maintenance cost, etc
Recently added slower (non-JIT) interpreter tier, removed others.
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JavaScript compiler in Chrome, Node.
Multi-target (7), multi-tier JIT. Optimizations mix of classical stuff and dynamic language stuff from Smalltalk.
Multiple generations of optimization and IRs. Always adjusting for sweet spot of runtime perf vs. compile time, memory, maintenance cost, etc
Recently added slower (non-JIT) interpreter tier, removed others.