Firing up the Ignition interpreter · V8

Show navigation V8 and other modern JavaScript engines get their speed via just-in-time (JIT) compilation of script to native machine code immediately prior to execution. Code is initially compiled by a baseline compiler, which can generate non-optimized machine code quickly. The compiled code is analyzed during runtime and optionally re-compiled dynamically with a more advanced optimizing compile

[Rockridge]

V8のIgnitionインタープリタは、ベースラインJITが生成する機械語よりも25 - 50%小さなバイトコードを吐くが、その実効速度はベースラインJIT並み。TurboFan用のマクロアセンブラ命令で構築されている点も興味深い。

[efcl]

V8のIgnition Interpreterについｔえ。 baselineのmachine codeに比べて小さく簡単なbytecodeを吐く。