Re: About optimization
Sebastian Bergmann wrote:
Am 13.01.2010 12:18, schrieb mathieu.suen:
I would like to know why the opcode is not optimized.
Because any optimization, even very simple ones, impose a performance
penalty in the default execution model of PHP which does not use a
bytecode cache.
For simple optimization I don't think so. Take the simple example:
function foo()
{
$a = 45;
return $a;
}
Here if you don't optimize you are creating a variable. So you put pressure on the gc and the memory.
Best would be some benchmark.
By the way why there is no native bytecode cache ?
Only when the bytecode is not regenerated for each execution does it
make sense to invest for time for the then one-time compilation.
Sorry I don't understand what do you mean?
-- Mathieu Suen
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