Hi, Richard,
How about if I add and utilize "umul_highpart_di" to the libgcc
instead of expanding
multiplication for the high part directly, or add my own function with
with pre-shift, post-shift, and
64-bit constant and 64-bit operand as function parameters for division
for less than "-O3"?
thanks, Dinar.
On Fri, Jun 15, 2012 at 12:12 PM, Richard Earnshaw <rearn...@arm.com> wrote:
> On 14/06/12 19:46, Dinar Temirbulatov wrote:
>> Hi,
>> OK for trunk?
>> thanks, Dinar.
>>
>
> I'm still not comfortable about the code bloat that this is likely to
> incurr at -O2.
>
> R.
>
>> On Tue, Jun 12, 2012 at 11:00 AM, Paolo Bonzini <bonz...@gnu.org> wrote:
>>> Il 12/06/2012 08:52, Dinar Temirbulatov ha scritto:
>>>>> is safe? That is, that the underflows cannot produce a wrong result?
>>>
>>> [snip]
>>>
>>> Thanks very much!
>>>
>>> Paolo=
>>>
>>> ChangeLog.txt
>>>
>>>
>>> 2012-06-14 Dinar Temirbulatov <dtemirbula...@gmail.com>
>>> Alexey Kravets <mr.kayr...@gmail.com>
>>> Paolo Bonzini <bonz...@gnu.org>
>>>
>>> * config/arm/arm.c (arm_rtx_costs_1): Add cost estimate for the integer
>>> double-word division operation.
>>> * config/mips/mips.c (mips_rtx_costs): Extend cost estimate for the
>>> integer
>>> double-word division operation for 32-bit targets.
>>> * gcc/expmed.c (expand_mult_highpart_optab): Allow to generate the
>>> higher multipilcation
>>> product for unsigned double-word integers using 32-bit wide registers.
>>>
>>> 30.patch
>>>
>>>
>>> N ¬n‡r¥ªíÂ)emçhÂyhi× ¢w^™©Ý
>
>
