Andreas Kling 8d0344a636 LibJS: Avoid unnecessary MarkedVector in Bytecode::Op::Call::execute() ...

perform_call() wants a ReadonlySpan<Value>, so just grab a slice of the
current register window instead of making a MarkedVector.

10% speed-up on this function call microbenchmark:

    function callee(a, b, c) { }

    function caller(callee) {
        for (let i = 0; i < 10_000_000; ++i)
            callee(1, 2, 3)
    }

    caller(callee)

2024-01-22 23:05:16 +01:00

71 KiB

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