Don't see any Haskell in there -> your benchmarks are invalid.
And what the hell is this? Are you telling me that native Julia is 30 times faster than native C? Your implementations are all fucked up and incomparable.
Matmul Language Time,s Memory, Mb Julia Native 0.12 111.7 D Ldc 2.01 68.9 D 2.30 71.3 D Gdc 2.32 73.3 C 3.64 69.2