> I understand that gcc -On happens before generating assembly code (.s), is
> it correct?
Yes.
> But some optimization, such as inlining, may require cross
> compilation-unit (i.e, cross file) information. It seems that these
> kind of optization is better to be handled at link time (thus, cro
I understand that gcc -On happens before generating assembly code (.s), is
it correct?
#gcc -S main.c; gcc -o a.out main.s (here without optimization)
#gcc -O2 -S main.c; gcc -o a1.out main.s (here with optimization of O2)
But some optimization, such as inlining, may require cross compilation-un
