Comparing Source Code

To view the performance difference for the source/assembly code, open the results in the Bottom-up compare mode and double-click the function you are interested in to view the performance values for each line of its source/assembly code of both results and the difference between them.

Outcome:

If	Then
The binary files are not modified and the debug information is available	Compare performance for each source/assembly code line.
The binary files are not modified but complied without the debug information	Compare performance for each assembly instruction.
The binary files are re-compiled with different options	Compare performance for each source code line. Note When comparing the source code for binary files with different checksum, only the Source pane is available.
The binary files are modified	Intel® VTune™ Amplifier cannot compare performance for source/assembly code and displays an error message.

For example, when you click the hotspot function in the Bottom-up window, the VTune Amplifier opens the Source pane that displays the CPU time data per each result and the difference between the results.

You see that the execution of the hottest line 68 took less CPU time in result r018hs.

Comparing Source Code

Note

See Also