go source for verification 2026-05-22

test/codegen/append.go

@@ -0,0 +1,245 @@
+// asmcheck
+
+//go:build !goexperiment.runtimefreegc
+
+// Copyright 2025 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
+
+func Append1(n int) []int {
+	var r []int
+	for i := range n {
+		// amd64:`.*growslice\b`
+		r = append(r, i)
+	}
+	// amd64:`.*moveSliceNoCapNoScan\b`
+	return r
+}
+
+func Append2(n int) (r []int) {
+	for i := range n {
+		// amd64:`.*growslice\b`
+		r = append(r, i)
+	}
+	// amd64:`.*moveSliceNoCapNoScan\b`
+	return
+}
+
+func Append3(n int) (r []int) {
+	for i := range n {
+		// amd64:`.*growslice\b`
+		r = append(r, i)
+	}
+	// amd64:`.*moveSliceNoCapNoScan\b`
+	return r
+}
+
+func Append4(n int) []int {
+	var r []int
+	for i := range n {
+		// amd64:`.*growsliceBuf\b`
+		r = append(r, i)
+	}
+	println(cap(r))
+	// amd64:`.*moveSliceNoScan\b`
+	return r
+}
+
+func Append5(n int) []int {
+	var r []int
+	for i := range n {
+		// amd64:`.*growsliceBuf\b`
+		r = append(r, i)
+	}
+	useSlice(r)
+	// amd64:`.*moveSliceNoScan\b`
+	return r
+}
+
+func Append5b(n int) []int {
+	var r []int
+	useSlice(r)
+	for i := range n {
+		// amd64:`.*growsliceBuf\b`
+		r = append(r, i)
+	}
+	// amd64:`.*moveSliceNoScan\b`
+	return r
+}
+
+func Append6(n int) []*int {
+	var r []*int
+	for i := range n {
+		// amd64:`.*growslice\b`
+		r = append(r, new(i))
+	}
+	// amd64:`.*moveSliceNoCap\b`
+	return r
+}
+
+func Append7(n int) []*int {
+	var r []*int
+	for i := range n {
+		// amd64:`.*growsliceBuf\b`
+		r = append(r, new(i))
+	}
+	println(cap(r))
+	// amd64:`.*moveSlice\b`
+	return r
+}
+
+func Append8(n int, p *[]int) {
+	var r []int
+	for i := range n {
+		// amd64:`.*growslice\b`
+		r = append(r, i)
+	}
+	// amd64:`.*moveSliceNoCapNoScan\b`
+	*p = r
+}
+
+func Append8b(n int, p *[]int) {
+	var r []int
+	// amd64:`.*moveSliceNoCapNoScan\b`
+	*p = r
+	for i := range n {
+		// amd64:`.*growslice\b`
+		r = append(r, i)
+	}
+}
+
+func Append9(n int) []int {
+	var r []int
+	for i := range n {
+		// amd64:`.*growslice\b`
+		r = append(r, i)
+	}
+	println(len(r))
+	// amd64:`.*moveSliceNoCapNoScan\b`
+	return r
+}
+
+func Append10(n int) []int {
+	var r []int
+	for i := range n {
+		// amd64:`.*growslice\b`
+		r = append(r, i)
+	}
+	println(r[3])
+	// amd64:`.*moveSliceNoCapNoScan\b`
+	return r
+}
+
+func Append11(n int) []int {
+	var r []int
+	for i := range n {
+		// amd64:`.*growsliceBuf\b`
+		r = append(r, i)
+	}
+	r = r[3:5]
+	// amd64:`.*moveSliceNoScan\b`
+	return r
+}
+
+func Append12(n int) []int {
+	var r []int
+	r = nil
+	for i := range n {
+		// amd64:`.*growslice\b`
+		r = append(r, i)
+	}
+	// amd64:`.*moveSliceNoCapNoScan\b`
+	return r
+}
+
+func Append13(n int) []int {
+	var r []int
+	r, r = nil, nil
+	for i := range n {
+		// amd64:`.*growslice\b`
+		r = append(r, i)
+	}
+	// amd64:`.*moveSliceNoCapNoScan\b`
+	return r
+}
+
+func Append14(n int) []int {
+	var r []int
+	r = []int{3, 4, 5}
+	for i := range n {
+		// amd64:`.*growsliceBuf\b`
+		r = append(r, i)
+	}
+	// amd64:`.*moveSliceNoScan\b`
+	return r
+}
+
+func Append15(n int) []int {
+	r := []int{3, 4, 5}
+	for i := range n {
+		// amd64:`.*growsliceBuf\b`
+		r = append(r, i)
+	}
+	// amd64:`.*moveSliceNoScan\b`
+	return r
+}
+
+func Append16(r []int, n int) []int {
+	for i := range n {
+		// amd64:`.*growslice\b`
+		r = append(r, i)
+	}
+	// amd64:`.*moveSliceNoCapNoScan\b`
+	return r
+}
+
+func Append17(n int) []int {
+	var r []int
+	for i := range n {
+		// amd64:`.*growslice\b`
+		r = append(r, i)
+	}
+	for i, x := range r {
+		println(i, x)
+	}
+	// amd64:`.*moveSliceNoCapNoScan\b`
+	return r
+}
+
+func Append18(n int, p *[]int) {
+	var r []int
+	for i := range n {
+		// amd64:-`.*moveSliceNoCapNoScan`
+		*p = r
+		// amd64:`.*growslice`
+		r = append(r, i)
+	}
+}
+
+func Append19(n int, p [][]int) {
+	for j := range p {
+		var r []int
+		for i := range n {
+			// amd64:`.*growslice`
+			r = append(r, i)
+		}
+		// amd64:`.*moveSliceNoCapNoScan`
+		p[j] = r
+	}
+}
+
+func Append20(n int, p [][]int) {
+	for j := range p {
+		var r []int
+		// amd64:`.*growslice`
+		r = append(r, 0)
+		// amd64:-`.*moveSliceNoCapNoScan`
+		p[j] = r
+	}
+}
+
+//go:noinline
+func useSlice(s []int) {
+}