Date: Wed, 21 Feb 2007 13:11:04 +0100 (CET) From: Christian Baer <christian.baer@uni-dortmund.de> To: freebsd-questions@freebsd.org Subject: Re: Compiler Flags for SPARC64 Message-ID: <erhcso$16dn$2@nermal.rz1.convenimus.net> References: <erc7qs$qra$11@nermal.rz1.convenimus.net> <20070219174550.GA27605@xor.obsecurity.org>
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On Mon, 19 Feb 2007 12:45:51 -0500 Kris Kennaway wrote: >> Has anyone got any ideas on how to go on with this? > > You'll have to look at the compiler spec and how it is bootstrapped. That could become quite a project. > FWIW, I don't think there are any secret flags you can set to improve > the compiler targetting, as the defaults are already appropriate. These are not 'secret' flags: http://gcc.gnu.org/onlinedocs/gcc-3.4.6/gcc/SPARC-Options.html#SPARC-Options Also look a this: http://www.osnews.com/story.php/6136/SPARC-Optimizations-With-GCC/page1 gcc by default creates v7 code which is a fair bit slower on a v9 CPU than v9 code. And I can't find anything that suggests that FreeBSD has any default flags that take this into account. Regards Chris
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