Patch for stricter implicit conversions between vectors

[Mark Mitchell]

Ian Lance Taylor wrote:
> Andrew Pinski <pinskia@gmail.com> writes:
> 
>>> We do have such flags.  For example, -fpermissive and
>>> -ffriend-injection.
>> Except those are only for C++ and this case is a bit special.
> 
> I disagree.  I appreciate your message, but it doesn't add any new
> facts, and doesn't change my feelings on this matter.  I won't bother
> to reply in detail, since it would add nothing to the conversation.

I agree with you that the flag is consistent with our precedent, and
that we should keep it.

I also think that the patch, as posted, is OK, modulo the documentation
issue that Joseph raised.  Mark, please add the documentation for the
flag, wait 48 hours for objections from PowerPC and/or Intel experts,
and then check in.  (I did look at those bits, and they look fine to me,
but I don't claim to be the world's foremost Altivec/MMX expert.)

-- 
Mark Mitchell
CodeSourcery
mark@codesourcery.com
(650) 331-3385 x713