The plugin allows you to profile your Flash and Flex applications.
CPU profiling: self and cumulative execution time, caller and callee hierarchy, sorting, navigation to source code and scope filtering.
Please find more details on
plugin wiki page
Recent change notes
IntelliJ IDEA 13 compatibility
General usage instructions
The ActionScript Profiler plugin maintenance has ended. The plugin remains available for installation and will be compatible with the future IntelliJ IDEA versions but the plugin authors do not plan to release plugin updates in future. The source code of the plugin is available, see the link above.
Note that the Flash/Flex Support plugin, which is included in the IntelliJ IDEA installation, remains maintained.