Source identifier for result forwarding

Details Source identifier for result forwarding Source identifier for result forwarding

1995-05-12

1997-05-27

Harrell, Robert B.

G06F 928

Patent

active

056340265

ABSTRACT:
In a method and apparatus for result forwarding, a source operand compare circuit for a reservation station for a superscalar processor having a plurality of execution units, includes a source identifier for identifying an execution unit that will produce a needed result. The source identifier is included with a rename tag associated with a respective source operand. A multiplexor controlled by the source identifier directs the result of an execution unit to a comparator. The comparator compares the rename tag with a specific reservation station identity. As a result of this comparison, the needed data result is supplied to the respective source operand.

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