In a superscalar processor, multiple instructions are executed in parallel
to obtain multiple execution results, and the multiple execution results
are stored in a working register file. Each execution result in the
working register file has at least one status bit associated therewith
which identifies the execution result as valid data. The multiple
execution results contained in the working register data then retired by
changing the status bits associated with each execution result to identify
the execution result as an architectural copy of the data. In this manner,
the speculative data is retired without data movement of the speculative
data, thus reducing a number of ports needed in the superscalar processor.