From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Martin v. Loewis" To: terpin@infis.univ.trieste.it Cc: help-gcc@gnu.org Subject: Re: Help on difference of running on varius x86 with linux Date: Sat, 01 Apr 2000 22:34:00 -0000 Message-id: <200004020633.IAA00927@loewis.home.cs.tu-berlin.de> References: <38E532F8.2A1C03BE@infis.univ.trieste.it> X-SW-Source: 2000-04/msg00002.html > It's right or there is some things that i don't have see. It is entirely possible that the execution speed of a certain code varies from processor to processor. Some instructions behave better on some processor, and different ones on another. Still, the -O options only perform processor-independent optimizations, such as function inlining. > Another question when i use CPU optimization, i have used the same > that are used for compile the kernel what happen ? > Can give suggest where find this info You can find the documentation of all command line flags in the gcc manual. You can find the gcc manual by invoking 'info' on your system. Regards, Martin