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Re: [patches] Re: SSE min/max instruction support


On Sun, Feb 25, 2001 at 12:25:24AM +0100, Jan Hubicka wrote:
> Whats also about explicitly documenting the i386 behaviour for smin/smax
> FP, so we can use them in IEEE compilation?

Not possible.  Naturally the ia64 definition is the same
as the i386 definition.  But rs6000 uses

	tmp = a - b;
	result = (tmp >= 0 ? a : b);

where the >= is hardcoded in "fsel %0,%1,%2,%3".  We could
perhaps add a target macro that describes which operand is
selected in the case of equality or NaN.


r~


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