[PATCH][AArch64] Make aarch64_min_divisions_for_recip_mul configurable

[Marcus Shawcroft]

On 1 May 2015 at 12:26, Wilco Dijkstra <wdijkstr@arm.com> wrote:
>
>
>> Marcus Shawcroft wrote:
>> On 27 April 2015 at 14:43, Wilco Dijkstra <wdijkstr@arm.com> wrote:
>>
>> >>  static unsigned int
>> >> -aarch64_min_divisions_for_recip_mul (enum machine_mode mode ATTRIBUTE_UNUSED)
>> >> +aarch64_min_divisions_for_recip_mul (enum machine_mode mode)
>> >>  {
>> >> -  return 2;
>> >> +  if (GET_MODE_UNIT_SIZE (mode) == 4)
>> >> +    return aarch64_tune_params->min_div_recip_mul_sf;
>> >> +  return aarch64_tune_params->min_div_recip_mul_df;
>>
>> This should be expressed directly as mode == SFmode (or DFmode) rather
>> than the indirect approach of first computing the size first.
>
> Can we never see vector types at this point?

Fair point, curiously we don't appear to see them, but I see no reason
why we should not.  Commit your patch as proposed.

Cheers /Marcus