graph arc sorting
     Details sorting individual parents/children within each call graph
     entry
64 - Reading histogram and call graph records
     Shows address ranges of histograms as they are read, and each call
     graph arc
128 - Symbol table
     Reading, classifying, and sorting the symbol table from the object
     file.  For line-by-line profiling ('-l' option), also shows line
     numbers being assigned to memory addresses.
256 - Static call graph
     Trace operation of '-c' option
512 - Symbol table and arc table lookups
     Detail operation of lookup routines
1024 - Call graph propagation
     Shows how function times are propagated along the call graph
2048 - Basic-blocks
     Shows basic-block records as they are read from profile data (only
     meaningful with '-l' option)
4096 - Symspecs
     Shows symspec-to-symbol pattern matching operation
8192 - Annotate source
     Tracks operation of '-A' option