LDC2 win64 calling convention

[Johan Engelen]

On Thursday, 29 November 2018 at 15:10:41 UTC, realhet wrote:
>
> In conclusion: Maybe LDC2 generates a lot of extra code, but I 
> always make longer asm routines, so it's not a problem for me 
> at all while it helps me a lot.

An extra note: I recommend you look into using 
`ldc.llvmasm.__asm` to write inline assembly. Some advantages: no 
worrying about calling conventions (portability) and you'll have 
more instructions available.
If you care about performance, usually you should _not_ write 
assembly, but for the 1% of other cases: the compiler also 
understands your asm much better if you use __asm.

LDC's __asm syntax is very similar (if not the same) to what GDC 
uses for inline assembly.

-Johan