[patch 1/N][ia64] -mfused-madd cleanup

[Jakub Jelinek]

On Wed, Nov 10, 2010 at 03:50:55PM -0800, Richard Henderson wrote:
> On 11/10/2010 03:24 PM, Steve Ellcey wrote:
> OTOH, truncation to SFmode is, I think, safe all of the time since the
> intermediate form of DF or XFmode has more than twice the precision of
> the final result, and so the (lack of) double rounding ought not be visible.

No, double rounding is a problem even if the precision is twice as large.
It is fairly easy to construct testcases.  So I think it would need to be an
unsafe math opt too...

	Jakub