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baa5319632
`tmp` can only ever be non-undef if there's a hooked object property, which is
already an `UNEXPECTED()` case. Keep track of whether this case is hit or not
to avoid needlessly calling `zval_ptr_dtor()`.
For:
<?php
$len = 0;
for ($i = 0; $i < 3_000_000; $i++) {
$len += strlen(json_encode(array_fill(0, 20, [])));
}
var_dump($len);
This is ~1.02 faster for a gcc 13.3 release build on a Intel(R) Core(TM)
i7-1365U.
Benchmark 1: /tmp/bench/before /tmp/bench/test6.php
Time (mean ± σ): 762.7 ms ± 3.2 ms [User: 758.5 ms, System: 2.8 ms]
Range (min … max): 759.2 ms … 769.3 ms 10 runs
Benchmark 2: /tmp/bench/after /tmp/bench/test6.php
Time (mean ± σ): 748.3 ms ± 9.0 ms [User: 744.3 ms, System: 3.1 ms]
Range (min … max): 740.8 ms … 766.2 ms 10 runs
Summary
/tmp/bench/after /tmp/bench/test6.php ran
1.02 ± 0.01 times faster than /tmp/bench/before /tmp/bench/test6.php