RFC: A new meta intrinsic header file for x86 intrinsics

[Chris Lattner]

>> I prefer <x86intrin.h>, as these are presumably usable in x86-64  
>> mode.
>>
>> One random request: would it be possible to keep mm_malloc.h out of  
>> the
>> umbrella header?  Inclusion of mm_malloc.h make use of SSE  
>> difficult in
>> kernel contexts, as mm_malloc.h pulls in stdlib.h and errno.h.
>>
>
> The idea is one header file to make all intrinsics available,  
> including
> _mm_malloc () and _mm_free ().  Unless we exclude those 2, I
> don't see that we have a choice.

How about something like:

#ifndef __DISABLE_MM_MALLOC_H
#include <mm_malloc.h>
#endif

in x86intrin.h?

-Chris