[RFC, ARM] Add pipeline description for Cortex-M4 -- try 2

[Jie Zhang]

On 09/14/2010 09:17 PM, Ramana Radhakrishnan wrote:
> On Tue, Sep 14, 2010 at 2:57 PM, Jie Zhang<jie@codesourcery.com>  wrote:
>> Since there is no Cortex-M4F processor, I updated my patch accordingly.
>>
>> Comments are welcome!
>>
>
> I've had a quick read through and an obvious query I had was whether
> there was any difference in cycle counts on the M4 for 16 and 32 bit
> multiplications / multiply and accumulate operations ?
>
According to the latest Cortex-M4 TRM, no. All multiply and MAC are 1 cycle.

-- 
Jie Zhang
CodeSourcery