4.11.6 Comma-Separated Values (CSV) Files with Weighted Call Graph (WCG) Information

The format of the CSV files generated by the compiler under the --analyze=callgraph --use_profile_info option combination is as follows:

Keep the following points in mind:

• Line 1 of the CSV file is the header line. It specifies the meaning of each field in each line of the remainder of the CSV file. In the case of CSV files that contain weighted call graph information, each line will have a caller function specification, followed by a callee function specification, followed by an unsigned integer that provides the number of times a call was executed during run time.
• There may be instances where the caller and callee function specifications are identical on multiple lines in the CSV file. This will happen when a caller function has multiple call sites to the callee function. In the merged weighted call graph that is created by the clt6x, the weights of each line that has the same caller and callee function specifications will be added together.
• The CSV file that is generated by the compiler using the path profiling instrumentation will not include information about indirect function calls or calls to runtime support helper functions (like _remi or _divi). However, you may be able to gather information about such calls with another method (like the PC discontinuity trace mentioned earlier).
• The format of these CSV files is in compliance with the RFC-4180 specification of Comma-Separated Values (CSV) files. For more details on this specification, please see https://tools.ietf.org/html/rfc4180.