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issue56440.go
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// 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. // Check to make sure that we recognize when the length of an append // is constant. We check this by making sure that the constant length // is folded into a load offset. package p func f(x []int) int { s := make([]int, 3) s = append(s, 4, 5) // amd64:`MOVQ\t40\(.*\),` return x[len(s)] } func g(x []int, p *bool) int { s := make([]int, 3) for { s = s[:3] if cap(s) < 5 { s = make([]int, 3, 5) } s = append(s, 4, 5) if *p { // amd64:`MOVQ\t40\(.*\),` return x[len(s)] } } return 0 }