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Re: GCC 4.3.0 Status Report (2008-02-14)
On Mon, Feb 18, 2008 at 03:25:03PM -0500, Jakub Jelinek wrote:
> What would break if in non-altivec ABI all Altivec registers are either
> fixed (-mno-altivec) or call-used (-maltivec)?
I still suggest that the correct choice is to use the same set of
call-used and call-saved registers without the AltiVec ABI as we do
with it. Which has no affect with -mno-altivec, but requires some
prologue work with -maltivec -mabi=no-altivec. After that, whether
the default ABI is AltiVec or not does not much matter to GCC.