Go has never been a single implementation language. It had a GCC backend since the start. GC (Go Compiler) has very peculiar characteristics: for one thing, it

Go has never been a single implementation language. It had a GCC backend since the start. GC (Go Compiler) has very peculiar characteristics: for one thing, it's written in Go itself. Another important thing is that it's very fast. That was an objective since the beginning of the Go project. Finally, comparison with Java GC (garbage collection) are quite nonsense as Go has a very different allocation pattern than Java software.