daniel@saturn.ucsc.edu (Daniel Edelson) (04/22/89)
Does the level of indirection used to implement virtual member functions prevent the compiler from inlining them (totally eliminating the function call overhead.) It seems intuitive that this would be the case but I haven't written a C++ compiler. daniel edelson daniel@saturn.ucsc.edu
grunwald@flute.cs.uiuc.edu (04/26/89)
No, you can inline virtual function calls, but only when you definitly know the type. e.g, assume virtual member foo::bar foo a; foo *b; a.bar() -- you can inline this b -> bar() -- but not this, unless flow analysis shows that it can only be a ``foo''. -- Dirk Grunwald Univ. of Illinois grunwald@flute.cs.uiuc.edu