------- Additional Comments From ghazi at gcc dot gnu dot org 2005-06-10 14:22 ------- (In reply to comment #30) > Subject: Re: GCC should combine adjacent stdio calls > On Fri, Jun 10, 2005 at 01:49:54PM -0000, joseph at codesourcery dot com wrote: > > Not that I really see the benefit of printf merging in any case; without > > statistics showing its effects on real code it seems any size benefit > > could easily be wiped out by inhibiting the sharing of strings used in > > more than one printf because instead they get merged with the adjacent > > different strings. > > > This is a good point. Kaveh, do you think you'd have time to do > some timings on things like GCC bootstraps or other code bases > that use stdio extensively? > Diego.
I have the cpu time, but it seems premature. Your patch as it stands only optimizes two adjacent printf calls. Not printf with putc or puts and none of the f* variants, right? And GCC uses mostly the f* variants. This is like asking for tree-ssa benchmarks when the framework was in but before any new passes were written. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21982
