JUMP_ALIGN_MAX_SKIP LABEL_ALIGN_AFTER_BARRIER_MAX_SKIP LOOP_ALIGN_MAX_SKIP LABEL_ALIGN_MAX_SKIP
None of these macros take any parameters, but for optimal performance on RX, it's key to match the max_skip with the size of the following opcode - there's a penalty only if you branch to an opcode which spans fetch groups, but it's the same penalty as running a NOP opcode, so you don't want to add nops if you don't have to. Can we extend those macros to take the label as a parameter? From that, the backend could find the next actual insn.
