It looks this is related to code inlining. If we add //go:noinline directive for the two functions, then they have no performance difference.
On Monday, September 20, 2021 at 12:39:51 PM UTC-4 tapi...@gmail.com wrote: > Sometimes, a function with named results is slower. > For example: https://play.golang.org/p/wvWkfSRqDLr > > The generated directives are almost the same for the two > functions with a named and unnamed result, except one difference. > For the function with the named result, the result represents as "".ret > in the generated directive, but for the function with the unnamed result, > the result represents as "".~r1 in the generated directive. > > Does "".ret means the result is allocated on stack? > > > -- You received this message because you are subscribed to the Google Groups "golang-nuts" group. To unsubscribe from this group and stop receiving emails from it, send an email to golang-nuts+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/golang-nuts/f962870a-17a4-4691-8f8d-282d27373018n%40googlegroups.com.
