An Introduction to Speculative Optimization in V8

Before we dive into the details of how TurboFan works, I’ll briefly explain how V8 works on a high level. Let’s have a look at this simplified breakdown of how V8 works (taken from the “JavaScript Start-up Performance” blog post by my colleague Addy Osmani):

How V8 Works
How V8 Works

Whenever Chrome or Node.js has to execute some piece of JavaScript, it passes the source code to V8. V8 takes that JavaScript source code and feeds it to the so-called Parser, which creates an Abstract Syntax Tree…

Read the entire article at the source link…

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