(Blank) 

No PC in the program corresponds to this line of code. This case should always apply to comment lines, and applies to apparent code lines in the following circumstances: 

• All the instructions from the apparent piece of code have been eliminated during optimization.

• The code is repeated elsewhere, and the compiler performed common subexpression recognition and tagged all the instructions with the lines for the other copy.

• The compiler tagged an instruction from that line with an incorrect line number.

0.

Some PCs in the program were tagged as derived from this line, but no data referred to those PCs: they were never in a call stack that was sampled statistically or traced. The 0. metric does not indicate that the line was not executed, only that it did not show up statistically in a profiling data packet or a recorded tracing data packet.

0.000

At least one PC from this line appeared in the data, but the computed metric value rounded to zero. 

1.234

The metrics for all PCs attributed to this line added up to the non-zero numerical value shown.