questions on optimization options!

2006-03-07 Thread Yang Yang 
1.For the same bunch of optimization options, does it matter if I
change the order of  them? Will that cause a different behavior of
GCC?
2.Recently I've seen a spec2000 config file, where there is one
optimization option written twice in the OPTIMIZE part(thay are not in
a row).Why is it written that way?Does it mean the same optimization
will be done twice?
I'd really appreciate if somebody could help.Thanks!

documentation on inlining model needed

2006-03-07 Thread Yang Yang 
Recently, I'm very interested in the inlining model of gcc.I need a
detailed documentation describing how the inlining is implemented in
gcc 4.0. Anybody who has been or is working on it please send me a
documentation. I'd really appreciate your help.