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Hacking with HHVM

Hacking with HHVM

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<strong>HHVM</strong> – Native code JIT<br />

• Bytecodes run a few times cold<br />

Modified<br />

N<br />

Y<br />

Invalidate<br />

Cache<br />

• Variable type inference<br />

• Hotpath detection<br />

Y<br />

Have native<br />

N<br />

Compile to<br />

Bytecode<br />

• Transform to native code<br />

Run Native<br />

Y<br />

Hot<br />

Compile to<br />

Native<br />

N<br />

Run<br />

Bytecode

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