Latest results/Timeline shows results from now back to few days or weeks for a specified branch and target. If you choose mainline from the branch menu, arm-elf from target, gcc_3_3_1_release from baseline (optional), Compilation time from data view, Daily from data interval, and 2.x.x from CSiBE test bed version (optional) you will get this chart.

Last month's compilation times of arm-elf can be seen on this chart (generated on 2004-12-04). The compilation with the -Os flag on 2004-12-02 was slower than before but there was a continuous speed-up in this month. The improvement of the compilation time with the -O2 flag was also continuous but there is a degradation as well.