On Fri, Aug 17, 2012 at 1:54 PM, Richard Guenther <richard.guent...@gmail.com> wrote: > Well, another effect of reducing the size of BITMAP_WORD is that > operations are not performed in a mode optimally using CPU regs > (did you check code generation differences on a 64bit host?).
I did, on x86_64 and on powerpc64. The effect is not dramatic, most of these machines can perform 32 bits operations just fine (I think the only exception would be alpha, maybe?). Ciao! Steven
