Kostya has updated his benchmarks today and moved from:
gdc 5.2.0 to 6.3.0
LDC 0.15.2 beta1 to 1.4.0-beta1 (LLVM 4.0.1)
https://github.com/kostya/benchmarks/commit/73e0cb0e755f8e45d79fd2083b217d107e1185a9
The results are interesting to see as there over a year and half
development between versions.
LDC seems to have slowed slightly in some benchmarks. GDC shows a
more steady improvement.
The most noticeable jumps are the Json encoding what is a direct
result from the library improvements, where we see results drop
van 25 -> 8 and 27 -> 7 ( but a large increase in memory usage ).
Brainfuck v2.0
-| D Gdc | 3.05 | 1.4 |
+| D Gdc | 2.61 | 1.4 |
-| D Ldc | 2.02 | 0.9 |
+| D Ldc | 2.85 | 1.0 |
mandel.b
-| D Gdc | 29.49 | 2.4 |
+| D Gdc | 27.40 | 2.4 |
-| D Ldc | 24.90 | 1.4 |
+| D Ldc | 31.21 | 1.8 |
Base64
-| D Gdc | 2.52 | 33.3 |
+| D Gdc | 3.04 | 54.1 |
-| D Ldc | 3.14 | 53.1 |
+| D Ldc | 2.01 | 54.4 |
Json
-| D Gdc Fast | 0.34 | 226.7 |
+| D Gdc Fast | 0.35 | 234.1 |
-| D Gdc | 25.86 | 926.1 |
+| D Gdc | 8.89 | 1357.2 |
-| D Ldc | 27.23 | 919.6 |
+| D Ldc | 7.13 | 1357.0 |
Matmul
-| D Gdc | 2.33 | 73.0 |
+| D Gdc | 2.30 | 73.0 |
-| D Ldc | 2.01 | 68.9 |
+| D Ldc | 2.17 | 73.0 |
Havlak
-| D Gdc | 31.79 | 197.6 |
+| D Gdc | 24.98 | 451.6 |
-| D Ldc | 25.15 | 214.9 |
+| D Ldc | 22.41 | 467.9 |
As we see with the json results, massive speed differences can be
hiding ( in exchange for more memory consumption ).
Unfortunately, he has not updated DMD but i expect that we may
see the same jump in the Json test. The Havlok results stand out
a lot with twice the increase in memory but a relative low gain (
vs the memory increase ).
The LLVM results surprised with LLVM 4.0.1 not showing much
improvement and resulting in noticeable slower times in several
tests.