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    SubjectRe: [BK+PATCH] remove __constant_memcpy
    On Thu, 2003-04-17 at 04:06, Linus Torvalds wrote:
    > On Wed, 16 Apr 2003, Jeff Garzik wrote:
    > >
    > > gcc's __builtin_memcpy performs the same function (and more) as the
    > > kernel's __constant_memcpy. So, let's remove __constant_memcpy, and let
    > > the compiler do it.
    > Please don't.
    > There's no way gcc will EVER get the SSE2 cases right. It just cannot do
    > it. In fact, I live in fear that we will have to turn off the compiler
    > intrisics entirely some day just because there is always the worry that
    > gcc will start using FP.

    it can do that ANYWAY for all kinds of things.
    We really should ask the gcc folks to add a
    -fdontyoudareusefloatingpoint flag (well different name probably) to
    make sure it never ever will generate FP code. (would also help catch
    abusers of FP code in the kernel as a bonus ;)
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