Altivec and CW?

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MP - 29 Aug 2004 03:55 GMT

Does anyone know what the "Altivec Programming Model" checkbox and
"Generate VRSAVE Instructions" checkbox means in the PPC Processor/Code
Generation Settings of Projects in CW? Does this somehow compile code
to use Altivec where it can?

MP

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Chris Cox - 29 Aug 2004 04:45 GMT

Those are well documented in the CodeWarrior documentation.
They enable YOU to write AltiVec code, they do not turn on any
auto-vectorization.

Chris

> Does anyone know what the "Altivec Programming Model" checkbox and
> "Generate VRSAVE Instructions" checkbox means in the PPC Processor/Code
> Generation Settings of Projects in CW? Does this somehow compile code
> to use Altivec where it can?
>
> MP

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Paul Russell - 29 Aug 2004 05:18 GMT

> Those are well documented in the CodeWarrior documentation.
> They enable YOU to write AltiVec code, they do not turn on any
> auto-vectorization.

While this is true, I believe that CW can optionally use AltiVec for
struct copies. While this is not exactly auto-vectorization it does
perhaps meet the OP's criterion of "compiling code to use Altivec where
it can".

Paul

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Mac Forum / Programming / CodeWarrior / August 2004

Altivec and CW?