go too_big_to_ssa 源码
golang too_big_to_ssa 代码
文件路径：/test/abi/too_big_to_ssa.go
// run
//go:build !wasm
// +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)
}
}
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