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Re: PPC AltiVec request: add an abi variant
- From: <tm_gccmail at mail dot kloo dot net>
- To: Matt Thomas <matt at 3am-software dot com>
- Cc: gcc at sources dot redhat dot com
- Date: Mon, 3 Mar 2003 13:38:34 -0800 (PST)
- Subject: Re: PPC AltiVec request: add an abi variant
On Mon, 3 Mar 2003, Matt Thomas wrote:
> To facilitate using AltiVec in the NetBSD kernel, I'd really like
> a environment where all AltiVec registers were considered to be
> callee-saved. If that happened, the kernel wouldn't have to incur
> the overhead of saving/restoring AltiVec state in the kernel other
> than where it's used.
Why would the Altivec registers require saving/restoring where they're
not used?
You're either mistaken, or not expressing the concept clearly?
Toshi