Il 27/11/2012 10:27, Wenchao Xia ha scritto: > In tcg case I think translate.o will influent performance obviously, > how about adding an option "fast-build" to use -O1 for it by default. > If you agree I will adding that after this patch upstream which fix > build bot failure quickly.
This is not about having a fast or slow build, it's about not requiring a ludicrous amount of memory... Besides, translate.c is usually not too high in the profiles. Most of the time is spent _executing_ JIT-translated code, not translating it. Note that there is probably one or two GCC options that can be fine-tuned to avoid the explosion instead of just -O1 vs. -O2. If you have an affected machine (F18) you can help by compiling translate.c with -O2 -ftime-report. I planned to do this today, but I first need to install a F18 virtual machine. Paolo
