BackgroundThe Go 1.20 version was officially released in February 2023, it introduced the PGO(Profile Guided Optimization) mechanism.The basic principle of PGO can be divided into the following two steps:First, profiling is performed on the program to collect data about the program's runtime and generate a profiling file.When compiling the program, enable the PGO option, and the compiler will optimize the program's performance based on the content in the .pgo file.When compiling a program, the compiler will perform many optimizations, including well-known optimizations such as inline optimizat...