Date: Fri, 4 Mar 2005 23:30:07 -0500 From: Damian Gerow <dgerow@afflictions.org> To: freebsd-amd64@freebsd.org Subject: Is -O2 supported for world? Message-ID: <20050305043006.GN83265@afflictions.org>
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I'm a little fuzzy on whether -O2 is supported for world or not: I seem to
remember on x86 it is, but the only references I've seen to amd64 were
speaking about ports.
Is -O2 optimization supported in amd64? It most definitely doesn't work:
/usr/src/lib/libc/i386/sys/_amd64_get_fsbase.c: In function `_amd64_get_fsbase':
/usr/src/lib/libc/i386/sys/_amd64_get_fsbase.c:40: warning: dereferencing type-punned pointer will break strict-aliasing rules
without -fno-strict-aliasing. Not that I have any serious desire to run
with -O2, just curious.
- Damian
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