On Fri, Aug 07, 2009 at 01:50:03PM +0200, Matthieu CASTET wrote : > Albin Tonnerre a écrit : > > On Fri, Aug 07, 2009 at 11:36:56AM +0200, Alain Knaff wrote : > >> On 08/07/09 11:24, Albin Tonnerre wrote: > >>> Regards, > >> Could it be that the patches that remove division (zutil.h and inflate.c) > >> have somehow not been applied? > > Indeed, they've not been applied. However, I'd rather try to understand why > > exactly this is an issue when compiling with -Os and not -O2 instead of working > > around it by removing the divisions. > Look at the generated code. > Arm doesn't have division instruction. > May be at -Os gcc emit a call to the software division, but at -O2 it > manage to optimise the division (transform it in shift, inline some > builtin, ...). Yes, I figured that out. What I don't get, though, is that it fails while the software division symbol (__aeabi_uidivmod here) does seem to be provided by libgcc. Regards, -- Albin Tonnerre, Free Electrons Kernel, drivers and embedded Linux development, consulting, training and support. http://free-electrons.com -- To unsubscribe from this list: send the line "unsubscribe linux-embedded" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
