libgcc: strange optimization

[Hans-Peter Nilsson]

On Tue, 2 Aug 2011, Richard Guenther wrote:
> > I'd be ok with that, FWIW; I see the problem with keeping the
> > scheduling of operations in a working order (yuck) and I don't
> > see how else to keep it working ...except perhaps make gcc flag
> > functions with register asms as non-inlinable, maybe even flag
> > down any of the dangerous re-scheduling?
>
> But then can't people use a pure assembler stub instead?

I see your point, but you're thinking new code, I'm thinking
let's keep existing code used by several targets and documented
as working the last seven years working.  Maybe breakable with a
major release; in gcc-5.  (Oh no, I see what's coming. :)

brgds, H-P