SSE and AVX with D

[Walter Bright]

On 5/15/2012 9:39 AM, jerro wrote:
> Note that core.simd currently only defines SSE intrinsics for
> instructions of the form
>
> INSTRUCTION xmm1, xmm2/m128
>
> which means that instructions such as shufps are not supported.
> You could take a look at gdc, which provides gcc builtins
> through module gcc.builtins. To find the builtin names you can
> take a look at gcc implementation of xmmintrin.h. GDC also
> produces faster code than DMD, especially for floating point
> code. It does not yet support AVX, though.
>
> If you want to use AVX for operations that don't have an
> operator, currently your only choice (AFAIK) is to use LDC
> and an ugly workaround that I used at
> https://github.com/jerro/pfft. You write your"intrinsics"
> in c and use clang to compile them to .bc (or write a .ll
> file manually if you know the llvm assembly language). Then
> you compile your D code with LLVM using the flags -output-bc
> and -single-obj. You merge the resulting .bc file with the
> "intrinsics" file using llvm-link, then optimize it using
> opt and convert them to assembly using llc. Here is an
> example:
>
> https://github.com/jerro/pfft/blob/master/build-ldc2.sh
>
> I have only tried this on linux.

You can use the inline assembler for shufps, also for AVX.