> On Feb 4, 2008 4:11 AM, H.J. Lu <[EMAIL PROTECTED]> wrote: > > DImode is aligned at 8 byte in i386. Since 32bit doesn't have > > 64bit register, can we align DImode at 4byte instead of 8 > > for i386? It shouldn't have any negative impact on performance. > > I don't think DImode is aligned at 8 bytes on i386, at least not as > far as struct layout is concerned.
It is with -malign-double AFAIK. The reasons for doing so predate me. I guess it was a speculation that since alignment on double appeared that in future same alignment on long long might too. Honza > > Richard.
