On Saturday, 29 July 2017 at 16:01:07 UTC, piotrekg2 wrote:
Hi,
I'm trying to port some of my c++ code which uses sse2
instructions into D. The code calls the following intrinsics:
- _mm256_loadu_si256
- _mm256_movemask_epi8
Do they have any equivalent intrinsics in D?
Yes, with LDC (probably GDC too).
But unfortunately we don't have the "_mm256" functions (yet?),
instead we have GCC's "__builtin_ia32..." functions.
The first one you mention I think is just an unaligned load? That
can be done with the template `loadUnaligned` from module
ldc.simd.
The second one has a synonym, "__builtin_ia32_pmovmskb256".
-Johan
