Cache auto vec

Auto-vectorise populating the cache with hints to the compiler and restrict keyword.

Does it give the same performance as the previous version ?

Also, and this is a matter of style so let me know what you think, could we call this macro something else ? It is not just giving information it is actually declaring a pointer.

How about:

#define swift_declare_aligned_ptr(type, array, ptr, alignment) \
 ...

swift_declare_aligned_ptr(float, x, cache->x, SWIFT_CACHE_ALIGNMENT);

I also prefer putting the type as the first argument of the macro. This way it looks even more like the declaration of a pointer which would read

float *x = cache->x;

It gives the same performance

Added 1 commit:

• 790b9ed9 - Remove compiler-specific conditions.

Makes sense, I think I just copy and pasted your version when I made mine. Fixed in 790b9ed9.

Yeah, that style makes more sense than what I've got.

Added 1 commit:

• 58b06679 - Rename alignment macro.

Fixed in 58b06679.

Status changed to merged

mentioned in commit 1969a156