Source file test/abi/fibish_closure.go

     1  // run
     2  
     3  //go:build !wasm
     4  
     5  // Copyright 2021 The Go Authors. All rights reserved.
     6  // Use of this source code is governed by a BSD-style
     7  // license that can be found in the LICENSE file.
     8  
     9  package main
    10  
    11  import "fmt"
    12  
    13  // Test that register results are correctly returned (and passed)
    14  
    15  type MagicLastTypeNameForTestingRegisterABI func(int, MagicLastTypeNameForTestingRegisterABI) (int, int)
    16  
    17  //go:noinline
    18  func f(x int, unused MagicLastTypeNameForTestingRegisterABI) (int, int) {
    19  
    20  	if x < 3 {
    21  		return 0, x
    22  	}
    23  
    24  	a, b := f(x-2, unused)
    25  	c, d := f(x-1, unused)
    26  	return a + d, b + c
    27  }
    28  
    29  func main() {
    30  	x := 40
    31  	a, b := f(x, f)
    32  	fmt.Printf("f(%d)=%d,%d\n", x, a, b)
    33  }
    34  

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