blob: f8f88983dce8aebf0f3e6d80f2028517f55d6fdc [file] [log] [blame]
// 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.
// go:build ignore
package testdata
type I interface {
foo(I)
}
type A struct{}
func (a A) foo(ai I) {}
type B struct{}
func (b B) foo(bi I) {}
func doWork() I { return nil }
func close() I { return nil }
func Baz(x B, h func() I, i I) I {
i.foo(x)
return h()
}
var g *B = &B{} // ensure *B.foo is created.
// Relevant SSA:
// func Baz(x B, h func() I, i I) I:
// t0 = make I <- B (x)
// t1 = invoke i.foo(t0)
// t2 = h()
// return t2
// Local(t0) has seemingly duplicates of successors. This
// happens in stringification of type propagation graph.
// Due to CHA, we analyze A.foo and *A.foo as well as B.foo
// and *B.foo, which have similar bodies and hence similar
// type flow that gets merged together during stringification.
// WANT:
// Local(t0) -> Local(ai), Local(ai), Local(bi), Local(bi)
// Constant(testdata.I) -> Local(t2)
// Local(x) -> Local(t0)