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Change-Id: Ic67f676f5ebe146166a0d3c1d78a802881320e49 Reviewed-on: https://go-review.googlesource.com/c/go/+/400375 Run-TryBot: Keith Randall <khr@golang.org> TryBot-Result: Gopher Robot <gobot@golang.org> Reviewed-by: Cherry Mui <cherryyz@google.com> Reviewed-by: Keith Randall <khr@google.com>
73 lines
1.0 KiB
Go
73 lines
1.0 KiB
Go
// asmcheck
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// Copyright 2019 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// These tests check code generation of switch statements.
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package codegen
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// see issue 33934
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func f(x string) int {
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// amd64:-`cmpstring`
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switch x {
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case "":
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return -1
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case "1", "2", "3":
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return -2
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default:
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return -3
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}
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}
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// use jump tables for 8+ int cases
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func square(x int) int {
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// amd64:`JMP\s\(.*\)\(.*\)$`
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switch x {
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case 1:
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return 1
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case 2:
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return 4
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case 3:
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return 9
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case 4:
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return 16
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case 5:
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return 25
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case 6:
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return 36
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case 7:
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return 49
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case 8:
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return 64
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default:
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return x * x
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}
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}
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// use jump tables for 8+ string lengths
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func length(x string) int {
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// amd64:`JMP\s\(.*\)\(.*\)$`
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switch x {
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case "a":
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return 1
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case "bb":
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return 2
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case "ccc":
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return 3
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case "dddd":
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return 4
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case "eeeee":
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return 5
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case "ffffff":
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return 6
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case "ggggggg":
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return 7
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case "hhhhhhhh":
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return 8
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default:
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return len(x)
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}
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}
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