On 11/11/2012 09:08 PM, Jeff Law wrote: > On 11/11/2012 02:01 PM, Andrew Haley wrote: >> On 11/11/2012 07:59 PM, Xin Tong wrote: >>>> No. GCC does all optimizations *except* those known to increase >>>> program size. This usually works pretty well, but isn't perfect. >>>> >>> so as to how the instructions are selected. compiling for code size >>> does not have an effect ? >> >> Please don't top-post on this list. >> >> Any target could, in principle, select instructions based on size >> and -OS, but I don't know any that do. > Many ports look at at -Os and change their instruction selections, > alignment requests, etc. > > grep for "optimize_size" in the machine descriptions... Oops, sorry. While "I don't know" was true, it wasn't very helpful. I do now! Andrew.
