2011/4/26 Nicolas Pitre <nicolas.pi...@linaro.org>:
> On Tue, 26 Apr 2011, Michael Hope wrote:
>
>> Yip, so the compiler spots these two lines:
>> Ndiv = target / source;
>> Nmod = target % source;
>>
>> and turns them into
>> Ndiv, Nmod = __aeabi_uldivmod(target, source)
>
> Why would gcc do that? All four variables involved here are of type
> unsigned int, no unsigned long long. Seems to me that __aeabi_uidivmod
> should have been used here instead.
I think we should dig into do_div, as i have reported, add a line
"asm("" : "+r"(source));" before "do_div(Kpart, source);" can also
avoid this optimization.
So the __aeabi_uldivmod should be in do_div.
>
>
> Nicolas
>
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