Dmitry Olshansky: > Analyzing asm dump should help. In this case it's a good amount of asm code. > But either way zip-sort heavily relies on proper inlining and I > suspect it's not fully "unrolled". I don't know if that's enough. > Did you try DMD or other compilers? In past I have used LDC often, but nowadays I use only DMD. Bye, bearophile