Cross-class inlining

Thu Oct 23 11:02:00 GMT 2003

Robin Garner writes:
 > > > Still, the "all in 1" approach gets a 49% speedup over just -O3 on
 > > > individual modules, and 17% better than I could do by hand.
 > > 
 > > Cool.
 > > 
 > 
 > Actually that was a bit premature - must have been tired. What I was seeing was a 17% improvement over the hand-inlined source. Compiling the unoptimized source all on the one command line actually only gets a 12% improvement.
 > 
 > So: next question - is there any way to manually direct the inlining ? I've tried playing with various values of -finline-limit, but can't get better than this.
Well, I can't see what's being inlined. Can you see any code that you
think should be inlined but isn't?
It might be that we have a bug, and the linliner isn't working.
Andrew.