On Mar 25, 2009, at 12:10 PM, David Greene wrote:> Hi all,
> We've been doing some work to add AVX support to the x86 backend.
> We'd
> like to contribute this to the community. We wanted to let everyone
> know in
> advance in case there are others working on this as well. If so,
> let's
> collaborate so we don't step on each other.
That's awesome! I don't know of anyone working on AVX support right
now.
> Currently we have the basic AVX machine description support, some
> TableGen
> enhancements which I've discussed this week and a start at
> intrinsics and
> TableGen patterns.
>
> We will probably not spend much time on machine code generation
> since we
> don't use the JIT but I have tried to write the .td files in the
> spirit of the
> existing x86 files so it shouldn't be too bad for someone else to
> add that
> support.
Sounds great, I'd just set the encoding of all the avx instructions to
something that causes the JIT to abort, so that we get a violent error
if they are accidentally used.
>
> I will start to send this upstream in patches. We hope others find
> this to be
> useful.
Very! Thanks David,
-Chris