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go/test/abi/fibish2.go

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// 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"
// Test that register results are correctly returned (and passed)
type MagicLastTypeNameForTestingRegisterABI func(int,MagicLastTypeNameForTestingRegisterABI) int
//go:registerparams
//go:noinline
func minus(decrement int) MagicLastTypeNameForTestingRegisterABI {
return MagicLastTypeNameForTestingRegisterABI( func(x int, _ MagicLastTypeNameForTestingRegisterABI) int { return x-decrement} )
}
//go:noinline
func f(x int, sub1 MagicLastTypeNameForTestingRegisterABI) (int, int) {
if x < 3 {
return 0, x
}
a, b := f(sub1(sub1(x, sub1), sub1), sub1)
c, d := f(sub1(x, sub1), sub1)
return a + d, b + c
}
func main() {
x := 40
a, b := f(x, minus(1))
fmt.Printf("f(%d)=%d,%d\n", x, a, b)
}