&gt; Interesting to see them moving away from AST-to-ASM and building an IR, which looks to be a CFG.<p>V8 actually has been using a compiler with a proper IR since 2010 when Crankshaft[1] was released.<p>[1] <a href="http:&#x2F;&#x2F;blog.chromium.org&#x2F;2010&#x2F;12&#x2F;new-crankshaft-for-v8.html" rel="nofollow">http:&#x2F;&#x2F;blog.chromium.org&#x2F;2010&#x2F;12&#x2F;new-crankshaft-for-v8.html</a>