> -----Original Message----- > From: julienpa...@gmail.com [mailto:julienpa...@gmail.com] On Behalf Of > Julien Pauli > Sent: Tuesday, March 03, 2015 5:11 PM > To: Zeev Suraski > Cc: Anthony Ferrara; PHP Internals > Subject: Re: [PHP-DEV] Re: Zend JIT Open Sourced > > On Tue, Mar 3, 2015 at 2:05 PM, Zeev Suraski <z...@zend.com> wrote: > > > > So I do apologize to the person. I don't to the code. > > I wanted to verify whether my gut was correct (minimal amount of > output, and > stdout is in fact buffered - output shouldn't move the needle) and > asked > Dmitry to rerun the C test on the same system, but this time with the > output > code completely commented out: > real 0m0.011s (+- 0.01) > user 0m0.011s (+- 0.01) > sys 0m0.001s > > Apologies to the code might be in order :) > > The source of the JIT engine's edge is, as Dmitry and Andi said, the > CPU-specific optimizations that gcc -O2 doesn't generate, and > therefore it > can actually be faster than a generic native executable in some (I > would > guess not all that common) cases. > > > > That's why one may run GCC -march=native when mastering the hardware. > I guess here, no JIT can outperform that.
Of course, but the vast majority of people don't build their own binaries. internals@ audience may not be the best sample to gauge that percentage, though :) Zeev -- PHP Internals - PHP Runtime Development Mailing List To unsubscribe, visit: http://www.php.net/unsub.php
