As a maintainer of the GCC register allocator (RA), I naturally have a keen interest in the register allocators used in various industrial compilers. For some compilers, like LLVM and Cranelift, there is sufficient documentation, including papers and presentations, to gain a deep understanding of their register allocators (RAs). Unfortunately, this is not the case for the Go compiler. To gather information about the RA in the Go compiler, I had to delve into its source code. This article outline...