[macstl-dev] Re: [altivec] CSE and the single programmer

[Glen Low]

On 21/07/2005, at 9:06 AM, Daniel Berlin wrote:

>
>
>>
>> g = f + f + f
>>
>>
>> is handled in the same chunk as
>>
>>
>> g = f + f + f + f
>>
>
> yes.
>
>
>
>>
>> Yet the former compiles to one load, and the latter compiles to 4
>> loads, for example.
>>
>
> Can't tell you without seeing how it got split up, but it sounds  
> like a
> reassociation problem.

Assuming that it is a reassociation problem, then how can I avoid/ 
prevent/inhibit the problem?

Cheers, Glen Low


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