bearophile wrote:
I have adapted another small benchmark to D. This benchmark is less interesting than the other ones because it mostly tests the optimizations done by the back-end. This means it's not a problem of the D language or its front-end, so even if DMD here shows to be not much efficient, LDC once finished may show significant improvements. As usual I may have done several errors, so keep your eyes open.
..snip..
Timings: C gcc: Long arithmetic: 11.15 s Nested Loops: 0.11 s D dmd: Long arithmetic: 63.7 s Nested Loops: 6.17 s Bye, bearophile
I tried this out with Tango + DMD 1.033, Tango + LDC r847 and GCC 4.3.2, my timings are as follows, best of three:
$ dmd bench.d -O -release -inline long arith: 55630 ms nested loop: 5090 ms $ ldc bench.d -O3 -release -inline long arith: 13870 ms nested loop: 120 ms $ gcc bench.c -O3 -s -fomit-frame-pointer long arith: 13600 ms nested loop: 170 ms My cpu is: Athlon64 X2 3800+
