I'm not sure I think it's just a current limitation: https://github.com/golang/go/wiki/CompilerOptimizations#function-inlining https://github.com/golang/go/wiki

I'm not sure I think it's just a current limitation: https://github.com/golang/go/wiki/CompilerOptimizations#function-inlining https://github.com/golang/go/wiki/CompilerOptimizations#func... They do improve the compiler every release, so we might see some of those operations get inlined in the future. More information there: https://github.com/golang/go/blob/master/src/cmd/compile/internal/gc/inl.go#L10 https://github.com/golang/go/blob/master/src/cmd/compile/int...