A method, apparatus, and computer instructions for presenting coverage
data relating to data access occurring during execution of code. The
coverage data containing data access indicators associated with memory
locations is obtained. The data access indicators that have been set by a
processor in the data processing system in response to access of the
memory locations during execution of the code by the processor are
identified to form set data access indicators. Each set instruction
access indicator is associated with a portion of the memory locations
allocated for the code. A presentation for coverage data is generated,
wherein the set data access indicators are identified in the
presentation.