gcc 3.2 altivec options and glibc

[Daniel Jacobowitz]

On Sun, Aug 25, 2002 at 12:16:34PM -0400, Jack Howarth wrote:
> Hi,
>     Does anyone intimate with the gcc 3.2 altivec code
> generation options have a good feel for what would happen
> if glibc were recompiled with altivec code generation
> enabled in gcc 3.2? In particular, would the libm created
> by such a compile have its floating point operations 
> redirected to the altivec? I am asking because we already have
> some code, hp-timing, that doesn't run on the 601, and it
> might be interesting at this point to explore an altivec
> saavy version of glibc. It seems to me that simply enabling
> its use through compiler flags would be a good starting 
> point, no? Thanks in advance for any suggestions.

GCC does not automatically use Altivec instructions for anything.  It
only enables the user to hand-code them without having to use assembly.
So far at least.

In addition, I believe support in 3.2 is a bit immature; the trunk is
better.

-- 
Daniel Jacobowitz
MontaVista Software                         Debian GNU/Linux Developer