-Cmin-function-alignment/-Calign-functions support in rustc #128830Description
i.e. the equivalents of -fmin-function-alignment (GCC, Clang does not support it) / -falign-functions (GCC, Clang).
For the Linux kernel, the behavior wanted is that of GCC's -fmin-function-alignment and Clang's -falign-functions, i.e. align all functions, including cold functions.
There is feature(fn_align), but we need to do it globally.