Re: gcc optimizations
Paul Ingelbrant <[email protected]>
| Newsgroups | gmane.linux.gentoo.performance |
|---|---|
| Message-ID | <[email protected]> |
Quoting Andrea Pretto <[email protected]>: > The flag -mmmx ( like -msse -m3dnow etc...) activate > some extensions for C language. > > See this: > http://gcc.gnu.org/onlinedocs/gcc-3.3.3/gcc/X86-Built-in-Functions.html#X86%20Built-in%20Functions > > So, those flag activate these built-in functions. I see. But what's the matter with the cmov instruction? Should be reasonably "simple" for gcc to use it automatically... -- [email protected] mailing list