Patch for stricter implicit conversions between vectors

[Mark Shinwell]

Paolo Bonzini wrote:
> Andrew Pinski wrote:
>> A couple of comments about this patch.
>> First I think it will break the following for VMX:
>> #include <altivec.h>
>> vector unsigned short f(vector unsigned char a, vector unsigned char b)
>> {
>>  return vec_vmuloub(a, b);
>> }
>>
>> Which is valid.
> 
> Do you *think* or does it break?

I'm going to find out when the build on ppc has finished... :-)

Mark