| 1 | // Copyright 2021 The Go Authors. All rights reserved. |
|---|---|
| 2 | // Use of this source code is governed by a BSD-style |
| 3 | // license that can be found in the LICENSE file. |
| 4 | |
| 5 | // go:build ignore |
| 6 | |
| 7 | package testdata |
| 8 | |
| 9 | type I interface{} |
| 10 | |
| 11 | func Bar(ii I) (I, I) { |
| 12 | return Foo(ii) |
| 13 | } |
| 14 | |
| 15 | func Foo(iii I) (I, I) { |
| 16 | return iii, iii |
| 17 | } |
| 18 | |
| 19 | func Do(j I) *I { |
| 20 | return &j |
| 21 | } |
| 22 | |
| 23 | func Baz(i I) *I { |
| 24 | Bar(i) |
| 25 | return Do(i) |
| 26 | } |
| 27 | |
| 28 | // Relevant SSA: |
| 29 | // func Bar(ii I) (I, I): |
| 30 | // t0 = Foo(ii) |
| 31 | // t1 = extract t0 #0 |
| 32 | // t2 = extract t0 #1 |
| 33 | // return t1, t2 |
| 34 | // |
| 35 | // func Foo(iii I) (I, I): |
| 36 | // return iii, iii |
| 37 | // |
| 38 | // func Do(j I) *I: |
| 39 | // t0 = new I (j) |
| 40 | // *t0 = j |
| 41 | // return t0 |
| 42 | // |
| 43 | // func Baz(i I): |
| 44 | // t0 = Bar(i) |
| 45 | // t1 = Do(i) |
| 46 | // return t1 |
| 47 | |
| 48 | // t0 and t1 in the last edge correspond to the nodes |
| 49 | // of Do and Baz. This edge is induced by Do(i). |
| 50 | |
| 51 | // WANT: |
| 52 | // Local(i) -> Local(ii), Local(j) |
| 53 | // Local(ii) -> Local(iii) |
| 54 | // Local(iii) -> Local(t0[0]), Local(t0[1]) |
| 55 | // Local(t1) -> Local(t0[0]) |
| 56 | // Local(t2) -> Local(t0[1]) |
| 57 | // Local(t0) -> Local(t1) |
| 58 |