| 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 A struct{} |
| 10 | type B struct{} |
| 11 | |
| 12 | type I interface{ foo() } |
| 13 | |
| 14 | func (a A) foo() {} |
| 15 | func (b B) foo() {} |
| 16 | |
| 17 | func Baz(b B, c bool) { |
| 18 | var i I |
| 19 | if c { |
| 20 | i = b |
| 21 | } else { |
| 22 | a := A{} |
| 23 | i = a |
| 24 | } |
| 25 | i.foo() |
| 26 | } |
| 27 | |
| 28 | // Relevant SSA: |
| 29 | // func Baz(b B, c bool): |
| 30 | // 0: |
| 31 | // t0 = local B (b) |
| 32 | // *t0 = b |
| 33 | // if c goto 1 else 3 |
| 34 | // |
| 35 | // 1: |
| 36 | // t1 = *t0 |
| 37 | // t2 = make I <- B (t1) |
| 38 | // jump 2 |
| 39 | // |
| 40 | // 2: |
| 41 | // t3 = phi [1: t2, 3: t7] #i |
| 42 | // t4 = invoke t3.foo() |
| 43 | // return |
| 44 | // |
| 45 | // 3: |
| 46 | // t5 = local A (a) |
| 47 | // t6 = *t5 |
| 48 | // t7 = make I <- A (t6) |
| 49 | // jump 2 |
| 50 | |
| 51 | // WANT: |
| 52 | // Local(t1) -> Local(t2) |
| 53 | // Local(t2) -> Local(t3) |
| 54 | // Local(t7) -> Local(t3) |
| 55 | // Local(t6) -> Local(t7) |
| 56 |
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