Hi, > > DF is supposed to be out of the game at this point, it has handed over the > control since global.c:build_insn_chain as far as liveness info is concerned.
Oh I used DF and it worked for me. But I think that is because this is the first new instruction to be inserted and nothing really must have changed w.r.t the call_insn for the DF info to be no longer consistent. However, in the light of the above, I shouldnt be using DF. > The REG_DEP_TRUE are somewhat misleading, it's an artifact in the dump. > What you're seeing are the contents of CALL_INSN_FUNCTION_USAGE, which are > always correct, so a solution to your problem would be to scan it for uses of > registers in caller-save.c:insert_one_insn. Of course this wouldn't plug the > hole entirely but would very likely be sufficient in practice. Good idea, I'll try using CALL_INSN_FUNCTION_USAGE. cheers! Pranav
