Hello!
> 2011-10-19 Sergey Ostanevich <sergos....@gmail.com>
>
> * gcc/config/i386/i386.c (ix86_option_override_internal): use loop
> align by 16 bytes for Atom platform
>
> diff --git a/gcc/config/i386/i386.c b/gcc/config/i386/i386.c
> index 2c53423..7a93144 100644
> --- a/gcc/config/i386/i386.c
> +++ b/gcc/config/i386/i386.c
> @@ -3497,6 +3497,8 @@ ix86_option_override_internal (bool main_args_p)
> {
> align_loops = processor_target_table[ix86_tune].align_loop;
> align_loops_max_skip =
> processor_target_table[ix86_tune].align_loop_max_skip;
> + if (ix86_tune == PROCESSOR_ATOM && optimize > 1)
> + align_loops_max_skip = 15;
> }
> if (align_jumps == 0)
> {
You can just change the default in processor_target_table.
Uros.
