Yeah, I've been a C/C++ programmer for 15+ years with heavy focus on performance, and have not once run PGO. I think it's quite often the case for C/C++ program

Yeah, I've been a C/C++ programmer for 15+ years with heavy focus on performance, and have not once run PGO. I think it's quite often the case for C/C++ programs that you -O2 and walk away, at least for codebases that your team doesn't specifically own.