On Mon, May 23, 2022 at 8:45 PM Nick Desaulniers <ndesaulniers@xxxxxxxxxx> wrote: > > I'm super not into having the rust optimization level differ from the > C optimization level. This is just someone having too much fun > wrapping every compiler flag in a kbuild option. Either folks wan't I mean, `Makefile`s are not my favorite pastime... :) > smaller size or more optimizations. Allowing for RUST_OPT_LEVEL_S and > CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE or RUST_OPT_LEVEL_3 and > CONFIG_CC_OPTIMIZE_FOR_SIZE is just wacky nonsense that's going to > make randconfig bug reports more confusing to tease out. I think what is important is to decide whether extra levels, for C and Rust, should be kept compile-able/maintained or not (I also replied in the `-O1` for C thread [1]). Note that the Rust side can be compiled as `-O0` or `-O1` at the moment, which is something we do not have for the C side; thus having only the C == Rust option means we will not have a configuration with those anymore. For me it is less complex to not have them, and I have not heard more opinions on this, either for or against (apart from that thread suggesting `-O1` for the C side), so if nobody else chimes in, I will remove them. [1] https://lore.kernel.org/lkml/CANiq72kySVvOQ7eqwe0Jzz3V0JTtrcqODHR9Ty4-sfDMdzP6XQ@xxxxxxxxxxxxxx/ Cheers, Miguel
