https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84100
--- Comment #11 from Chris Hall <gcc at gmch dot uk> --- FWIW: __attribute__((aligned(32))) works nicely for functions. Generally there is little to be gained from aligning all loops/jumps/labels in a given function or group of functions. Further, when code alignment issues bite, there is no guarantee that the solution is to align all loops/jumps/labels in the same way. So, it would be nice to be able to apply __attribute__((aligned(n))) to loops and/or labels... and perhaps to blocks. That way, precise alignment could be applied precisely where it matters. I have been doing some detailed timing of relatively small operations, which of course involves a loop to do the operation being timed many times. If the timing loop is not 32-byte aligned, the timings I get are not stable.
