------- Additional Comments From steven at gcc dot gnu dot org 2005-03-10
12:48 -------
> Maybe there should be another combining pass after the duplication
> of the indirect jumps. Should I create another PR for this?
There should not be another "combining" pass (you really mean constant
propagation). This new unfactoring stuff runs after register allocation,
so such a pass would not really help, except maybe to make the code look
prettier to you.
But, is this:
mov 0xfffffffc(%ebx),%eax
jmp *%eax
slower than this:
jmp *0xfffffffc(%ebx)
or have you not tried that (e.g. by hacking the assembly by hand)?
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15242
