Finding large difference b/w execution time of c++ and D codes for same problem

[Joseph Rushton Wakeling]

On 02/12/2013 11:17 PM, FG wrote:
> Winblows and DMD 32-bit, the rest 64-bit, but still, dmd was quite fast.
> Interesting how gdc -O3 gave no extra boost vs. -O2.

... try adding -frelease to the gdc call?