go source for verification 2026-05-22

test/codegen/typeswitch.go

@@ -0,0 +1,67 @@
+// asmcheck
+
+// Copyright 2024 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 codegen
+
+type Ix interface {
+	X()
+}
+
+type Iy interface {
+	Y()
+}
+
+type Iz interface {
+	Z()
+}
+
+func swXYZ(a Ix) {
+	switch t := a.(type) {
+	case Iy: // amd64:-".*typeAssert"
+		t.Y()
+	case Iz: // amd64:-".*typeAssert"
+		t.Z()
+	}
+}
+
+type Ig[T any] interface {
+	G() T
+}
+
+func swGYZ[T any](a Ig[T]) {
+	switch t := a.(type) {
+	case Iy: // amd64:-".*typeAssert"
+		t.Y()
+	case Iz: // amd64:-".*typeAssert"
+		t.Z()
+	case interface{ G() T }: // amd64:-".*typeAssert" -".*assertE2I\\(" ".*assertE2I2"
+		t.G()
+	}
+}
+
+func swE2G[T any](a any) {
+	switch t := a.(type) {
+	case Iy:
+		t.Y()
+	case Ig[T]: // amd64:-".*assertE2I\\(" ".*assertE2I2"
+		t.G()
+	}
+}
+
+func swI2G[T any](a Ix) {
+	switch t := a.(type) {
+	case Iy:
+		t.Y()
+	case Ig[T]: // amd64:-".*assertE2I\\(" ".*assertE2I2"
+		t.G()
+	}
+}
+
+func swCaller() {
+	swGYZ[int]((Ig[int])(nil))
+	swE2G[int]((Ig[int])(nil))
+	swI2G[int]((Ix)(nil))
+}