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JIT compilers optimization - JS #518

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mihaiberq opened this issue Feb 2, 2018 · 0 comments

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mihaiberq commented Feb 2, 2018 •

edited by nem035

Add a new insight/workout on JIT compilers, based on: https://hacks.mozilla.org/2017/02/a-crash-course-in-just-in-time-jit-compilers/

Fun optimization consequence:

This is (a lot) faster:

myFunction({ x: '1', a: true, b: undefined, c: undefined, d: undefined })
myFunction({ x: '1', a: undefined, b: true, c: undefined, d: undefined })
myFunction({ x: '1', a: undefined, b: undefined, c: true, d: undefined })
myFunction({ x: '1', a: undefined, b: undefined, c: undefined, d: true })

Than this:

myFunction({ x: '1', a: true })
myFunction({ x: '1', b: true })
myFunction({ x: '1', c: true })
myFunction({ x: '1', d: true })

mihaiberq self-assigned this

mihaiberq added the JavaScript label

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