On Thu, 19 Feb 2009 19:21:07 +0100 Ruud Vlaming <r...@betaresearch.nl> wrote:
> Are you absolutely sure they are really left out? I assume they are > just not shown in the assembly file. Four or more nops are replaced > by ellipses, but are present allright. Have a close look at the addresses. Oooops !!!!! Can you see the red on my face ?! ;-) Indeed you are right, with 4 nops, the assembly looks like this: fa4: db 9a sbi 0x1b, 3 ; 27 ... fb6: db 98 cbi 0x1b, 3 ; 27 fb8: 08 95 ret I apologize ! It's just that I didn't know GCC behaved like this, so I wasn't watching for it ! > Otherwise you could use > __asm__ volatile( > "nop \n\t" > "nop \n\t" > "nop \n\t" > "nop \n\t"); > in which gcc cannot start to optimize. I take note... -- Vince, embarassed... _______________________________________________ AVR-GCC-list mailing list AVR-GCC-list@nongnu.org http://lists.nongnu.org/mailman/listinfo/avr-gcc-list
