fhahn wrote: > Is this about computing **live-outs** of the return block as the code > suggests? (The summary currently talks about live-ins?)
Thanks, it should be **live-outs** in the description, updated! > I don't remember the situation on aarch64, but if by chance LR is modeled > with this "pristine register" concept, then maybe the caller needs to use > addLiveIns() rather than addLiveInsNoPristines()? I am not sure, but looking at `updateLiveness` (https://github.com/llvm/llvm-project/blob/main/llvm/lib/CodeGen/PrologEpilogInserter.cpp#L582) it looks like it uses the saved registers from MFI. Pristine registers I think contain all callee-saved registers for the target, which may be overestimating the liveness quite a bit. https://github.com/llvm/llvm-project/pull/73553 _______________________________________________ llvm-branch-commits mailing list llvm-branch-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-branch-commits
