go source for verification 2026-05-22

test/codegen/issue52635.go

@@ -0,0 +1,53 @@
+// asmcheck
+
+// Copyright 2022 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.
+
+// Test that optimized range memclr works with pointers to arrays.
+// The clears get inlined, see https://github.com/golang/go/issues/56997
+
+package codegen
+
+type T struct {
+	a *[10]int
+	b [10]int
+	s []int
+}
+
+func (t *T) f() {
+	// amd64:-".*runtime.memclrNoHeapPointers"
+	// amd64:`MOVUPS X15,`
+	for i := range t.a {
+		t.a[i] = 0
+	}
+
+	// amd64:-".*runtime.memclrNoHeapPointers"
+	// amd64:`MOVUPS X15,`
+	for i := range *t.a {
+		t.a[i] = 0
+	}
+
+	// amd64:-".*runtime.memclrNoHeapPointers"
+	// amd64:`MOVUPS X15,`
+	for i := range t.a {
+		(*t.a)[i] = 0
+	}
+
+	// amd64:-".*runtime.memclrNoHeapPointers"
+	// amd64:`MOVUPS X15,`
+	for i := range *t.a {
+		(*t.a)[i] = 0
+	}
+
+	// amd64:-".*runtime.memclrNoHeapPointers"
+	// amd64:`MOVUPS X15,`
+	for i := range t.b {
+		t.b[i] = 0
+	}
+
+	// amd64:".*runtime.memclrNoHeapPointers"
+	for i := range t.s {
+		t.s[i] = 0
+	}
+}