On Tue, Aug 23, 2005 at 09:28:50AM -0600, Roger Sayle wrote: > Good catch. This is indeed a -ffast-math (or more precisely a > flag_unsafe_math_optimizations) transformation. I'd prefer to > keep these transformations with -ffast-math, as Jan described them > as significantly helping SPEC's mesa when they were added.
Are you sure it was "(float)floor(d)"->"floorf((float)d)" that helped mesa and not "(float)floor((double)f)"->"floorf(f)" ? It wouldn't bother me if the first transformation went away even for -ffast-math. It seems egregeously wrong. r~
