A simple program that reads the igprof profile statistics file format and converts it to a format suitable for Brendan Greggs FlameGraph visualization.
The igprof format is a pain to parse properly. I still tried to do it properly, which makes the code a bit more complicated than it has to be, and a lot of information is read that is not needed for the current output. No symbol demangling is done, so you might want to add c++filt yourself.
Compile and copy to $PATH. No dependencies except C++11 std.
zcat igprof-outfile.gz | igprof-flamegraph | c++filt | flamegraph.pl > flamegraph.svg
Probably GPLv3.