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A comment on Speeding up PHP with the HipHop VM. Parent comment

Re:Speeding up PHP with the HipHop VM by pbiggar on Friday November 30, 2012 @03:49PM (#4855356)
Makes total sense, thanks!

Would using a register-based bytecode not have been useful for the x64 JIT?

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Re:Speeding up PHP with the HipHop VM by kmavm on Friday November 30, 2012 @06:47PM (#4856120)
Check out our HHIR work. It's an SSA-based IR, that gets us most of the advantages of a register representation. But it is at a much lower level than the bytecode.
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