bearophile:
DMD has a back-end that produces less efficient binaries comparedto GDC and LDC. But DMD is more up to date (but not a lot), and it's the most supported, it's the reference implementation. DMD works well on Windows too, GDC works on Windows too. I think LDC doesn't work well on Windows.
An DMD doesn't support 64 bit on Windows. Bye, bearophile
