Target buffer address region tracking

A system for target buffer address region tracking, the system comprising:

• memory configured to store instructions accessible by a processor;
• and
• the processor comprising a target buffer, wherein the processor is configured to perform a method comprising:
• receiving a restart address comprising a portion of an initial search address;
• comparing the restart address to a first stored address and to a second stored address, the first stored address and the second stored address each comprising a number of bits defining an address range;
• determining which one of the first and second stored addresses is identified as a same range and which one of the first and second stored addresses is identified as a different range based on a same value selector to form a predicted target address range defining an address region associated with an entry in the target buffer;
• based on determining that the restart address matches the first stored address, identifying the first stored address as the same range and the second stored address as the different range;
• based on determining that the restart address matches the second stored address, identifying the first stored address as the different range and the second stored address as the same range;
• and
• based on determining that the restart address matches neither the first stored address nor the second stored address, swapping identification of the same range and the different range by changing a state of the same value selector, and writing the restart address to one of the first and second stored addresses identified as the same range after the swapping.