On Tuesday, 9 October 2012 at 19:18:35 UTC, F i L wrote:
Manu wrote:
std.simd already does have a mammoth mess of static if(arch &
compiler).
The thing about std.simd is that it's designed to be portable,
so it
doesn't make sense to expose the low-level sse intrinsics
directly there.
Well, that's not really what I was suggesting. I was saying
maybe eventually matching the agnostic gdc builtins in a
separate module:
// core.builtins
import core.simd;
version (GNU)
import gcc.builtins;
void madd(ref float4 r, float4 a, float4 b)
{
version (X86_OR_X64)
{
version (DigitalMars)
{
r = __simd(XMM.PMADDWD, a, b);
}
else version (GNU)
{
__builtin_ia32_fmaddpd(r, a, b)
}
}
}
then std.simd can just use a single function (madd) and forget
about all the compiler-specific switches. This may be more work
than it's worth and std.simd should just contain all the
platform specific switches... idk, i'm just throwing out ideas.
You know... now that I think about it, this is pretty much
EXACTLY what std.simd IS already... lol, forget all of that,
please.
