[PATCH] D49884: [MachineOutliner] Add support for saving LR to a callee-saved register

[Matthias Braun via Phabricator via llvm-commits]

MatzeB added inline comments.


================
Comment at: lib/Target/AArch64/AArch64InstrInfo.cpp:4952
+  // We only want callee-saved registers that were saved in the Candidate's
+  // frame.
+  const std::vector<CalleeSavedInfo> &CSInfo =
----------------
paquette wrote:
> efriedma wrote:
> > Why not a caller-save register?
> I talked with Matthias about this, and apparently LiveRegUnits actually handles basically everything weird that could happen here, so it's not even really an issue...
Meaning we can change this to just go over the whole GPR register class instead of the CSR list :)


https://reviews.llvm.org/D49884