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...39;t see a large regression/complaint on a CPU-bound case, which is not a typical case for mobile workload, I wanted to be precautious of enabling it by default. However, as with default outlining case, I don't mind enabling this under -Oz (for minimizing code) with an opt-out option. Regards, Kyungwoo On Tue, Mar 24, 2020 at 12:01 PM Vedant Kumar <vedant_kumar at apple.com> wrote: > This looks really interesting. In the slides, it’s mentioned that the > combination of tuning the MachineOutliner for ThinLTO and of optimizing > function prolog/epilogs improved measured run-time pe...

Hello, I'd like to upstream our work over the time which the community would benefit from. This is a part of effort toward minimizing code size presented in here <https://llvm.org/devmtg/2020-02-23/slides/Kyungwoo-GlobalMachineOutlinerForThinLTO.pdf>. In particular, this RFC is about optimizing prolog and epilog for size. *Homogeneous Prolog and Epilog for Size Optimization, D76570 <https://reviews.llvm.org/D76570>:* Prolog and epilog to handle callee-save registers tend to be irregular with diffe...