Garbage collection in D

[bearophile]

I have tried the new JavaVM on Win, that optionally performs escape analysis, and the results are nice:

Timings, N=100_000_000, Windows, seconds:
  D 1:  40.20 DMD
  D 2:  21.83 DMD
  D 2:  18.80 DMD, struct + scope
  C++:  18.06
  D 1:   8.47 DMD
  D 2:   7.41 DMD + scope
  Java:  1.84 V.1.6.0_14, -XX:+UnlockExperimentalVMOptions -XX:+UseG1GC
  Java   1.78 -server
  Java:  1.44
  Java:  1.38 V.1.6.0_14
  Java:  0.28 V.1.6.0_14, -server -XX:+DoEscapeAnalysis
  
Timings, N=100_000_000, Pubuntu, seconds:
  D 1:  25.7  LDC
  C++:   6.87
  D 1:   2.67 LDC + scope
  Java:  1.49

Bye,
bearophile