// run //go:build !wasm // Copyright 2021 The Go Authors. All rights reserved. // Use of this source code is governed by a BSD-style // license that can be found in the LICENSE file. package main import ( "fmt" ) var sink *string type toobig struct { // 6 words will not SSA but will fit in registers a, b, c string } //go:registerparams //go:noinline func H(x toobig) string { return x.a + " " + x.b + " " + x.c } //go:registerparams //go:noinline func I(a, b, c string) toobig { return toobig{a, b, c} } func main() { s := H(toobig{"Hello", "there,", "World"}) gotVsWant(s, "Hello there, World") fmt.Println(s) t := H(I("Ahoy", "there,", "Matey")) gotVsWant(t, "Ahoy there, Matey") fmt.Println(t) } func gotVsWant(got, want string) { if got != want { fmt.Printf("FAIL, got %s, wanted %s\n", got, want) } }