Ach, Windows.

Yeah, you need VS Linker when compiling for 64bits on Windows.
Can't...

Probably. I am on Windows using dmd 2.061 and optlink 8.00.12

dmd...

http://dpaste.dzfl.pl/0f79b5ba

Missing -m64 or something?

void main()
{
    asm
    {
        mov    RAX, 3;
    }
}

results in:
Error: undefined identifier 'RAX'

AX and EAX...

...are returned from a function (via stack/registers). E.g.:

import std.stdio;

int foo...

...pulling values out of and into SIMD registers to do those workarounds causes massive stalls...

...needs memory access to I/O ports/registers (this also could warp some C interface...

...some location or puts the value into registers(these methods are essentially identical, at the...

...speed and in the number of spilled registers.


I am doing my best.

-- 
Configure issuemail...

...like 0xDEADBEEF
    2. set to 0xDEADBEEF all registers that are not guaranteed to be preserved...