[llvm-commits] [PATCH] Add Pattern ID Information

[David A. Greene]

Chris Lattner <clattner at apple.com> writes:

>> The bug fixes are not the most important part.  Getting the SIMD
>> specification into a scalable shape is.  Intel is not going to stop with
>> 256-bit vectors, 512-bit vectors or even 1k-bit vectors.
>
> We should *definitely* wait for a new ISA spec before changing how we
> model this.  If/when intel does this, there is no certainty it will
> look anything like SSE/AVX.

It's a very good bet.  One only need look at Larrabee/Knight's <blah>.

AVX2 looks just like AVX.  It adds 256-bit support for integers.

The refactoring will make things more maintainable now and prepare for
the future.  We talked about this a year ago and folks seemed to agree
it was a good idea.

                                  -Dave