Date: Fri, 26 Jul 2013 00:51:19 -0700 From: Warner Losh <imp@bsdimp.com> To: Andriy Gapon <avg@FreeBSD.org> Cc: freebsd-arch@FreeBSD.org Subject: Re: amd64: -O2 even with DEBUG Message-ID: <FEC550E9-75BB-4D7F-8833-8D98FB9BE976@bsdimp.com> In-Reply-To: <51F221D4.8040308@FreeBSD.org>
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On Jul 26, 2013, at 12:14 AM, Andriy Gapon wrote: > I wonder why amd64 is distinguished to have -O2 in COPTFLAGS even when DEBUG is > defined. For all other archs it's -O for that case. > > Perhaps, this was discussed / explained in the past, but I would appreciate it > being said again (or even written as a comment in kern.pre.mk). I think you may have it wrong. Everybody gets -O2, except arm and mips which get -O for dodgy historical reasons... At least for userland... But I don't think that's what you are talking about. For the kernel, we get everybody having -O2, except powerpc (and except DEBUG). Looking at the code for the latter, it sure looks to me to be a mistake. We should be setting _MINUS_O ala the powerpc case. And the -frename-registers looks misplaced to me as well... Warnerhelp
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