dmd makes D appear slow

[weaselcat via Digitalmars-d]

In nearly every benchmark I see D in, the default compiler used 
is dmd which runs computationally intense tasks 4-5x+ slower than 
GDC/LDC

example of a random blog post I found:
http://vaskir.blogspot.com/2015/04/computing-cryptography-hashes-rust-vs-f.html

D is up to 10x(!) slower than Rust.

Well... dmd is. Under LDC:
MD5 is 5x faster,
SHA1 is about the same,
SHA256 is 10x faster,
SHA512 is 10x faster.

The kicker?
_all_ of these were faster than the Rust timings(albeit by 5-10%) 
when using LDC.

This isn't the first time I've seen this, in basically every 
benchmark featuring D I have to submit a patch/make a comment 
that dmd shouldn't be used. Make no mistake, this is damaging to 
D's reputation - how well does D's "native efficiency" go over 
when people are saying it's slower than Scala and F#(mono)?

LDC and GDC need promoted more.

Bye,