I meant to sent my last reply to the list. Hi David,
On Wed, Mar 11, 2009 at 2:17 PM, David VanHorn <d...@mobilefusioninc.com> wrote: >> >> >> The assembly above comes from the __udivmodhi4 helper function (found >> in libgcc.a), which is a helper function for performing a 32-bit >> divide. > > > Let me guess.. It was stuck on below the LCD routines in memory, and AVR > Studio didn't know that somehow? Yeah - libgcc.a probably isn't compiled with debug information. > I'm still puzzled as to why the compiler didn't change: > > // This takes 53uS at 4 MHz > Bin = ( A / Data_Divisor ) // Data_Divisor is a constant, 32. If I declare const uint32_t Data_Divisor = 32; then it calls the helper function, but if I declare const int Data_Divisor = 32; then it appears to use the shift. -- Dave Hylands Shuswap, BC, Canada http://www.DaveHylands.com/ _______________________________________________ AVR-GCC-list mailing list AVR-GCC-list@nongnu.org http://lists.nongnu.org/mailman/listinfo/avr-gcc-list
