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Re: IEEE 754 and fused-madd (was: Re: patch: rs6000 specific)


> All right, so I need to generate additional FMA patterns by modifying 
> combine.
> Our FP expert says all the required transformations are IEEE-compliant.
> Before I get too far into it, does anybody want to dispute this?  Here are
> the patterns.  The claim is that each of them can be transformed safely
> into the first one in its group.

The transformations that are not IEEE safe can be applied when
flag_unsafe_math_optimizations is true.

Brad


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