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Without a branch, the processor is decoding and preprocessing several instructions. A normal branch discards the next instructions already partially processed. This instruction could jump forward up to 32 bytes of instructions, but the goal would be to use the partially processed instructions if the branch fail, and discard if the branch succeeds.
Could be implemented using the existing Branch Relative with a immediate forward branch under the limit the processor can handle, or use the suggested 2 byte instruction that does not allow more than 4 bits to specify no more than 32 bytes forward.