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Change-Id: Ia7a955833d761e08c1b8081fb29a2e6317de004c Reviewed-on: https://go-review.googlesource.com/c/go/+/760681 Auto-Submit: Keith Randall <khr@google.com> Reviewed-by: Junyang Shao <shaojunyang@google.com> Reviewed-by: Paul Murphy <paumurph@redhat.com> Reviewed-by: Keith Randall <khr@google.com> LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
114 lines
3.2 KiB
Go
114 lines
3.2 KiB
Go
// asmcheck
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// Copyright 2018 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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package codegen
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import "strings"
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// This file contains code generation tests related to the handling of
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// string types.
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func CountRunes(s string) int { // Issue #24923
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// amd64:`.*countrunes`
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return len([]rune(s))
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}
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func CountBytes(s []byte) int {
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// amd64:-`.*runtime.slicebytetostring`
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return len(string(s))
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}
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func ToByteSlice() []byte { // Issue #24698
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// amd64:`LEAQ type:\[3\]uint8`
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// amd64:`CALL runtime\.(newobject|mallocgcTinySize3)`
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// amd64:-`.*runtime.stringtoslicebyte`
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return []byte("foo")
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}
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func ConvertToByteSlice(a, b, c string) []byte {
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// amd64:`.*runtime.concatbyte3`
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return []byte(a + b + c)
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}
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// Loading from read-only symbols should get transformed into constants.
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func ConstantLoad() {
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// 12592 = 0x3130
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// 50 = 0x32
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// amd64:`MOVW \$12592, \(` `MOVB \$50, 2\(`
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// 386:`MOVW \$12592, \(` `MOVB \$50, 2\(`
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// arm:`MOVW \$48` `MOVW \$49` `MOVW \$50`
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// arm64:`MOVD \$12592` `MOVD \$50`
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// loong64:`MOVV \$12592` `MOVV \$50`
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// wasm:`I64Const \$12592` `I64Store16 \$0` `I64Const \$50` `I64Store8 \$2`
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// mips64:`MOVV \$48` `MOVV \$49` `MOVV \$50`
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bsink = []byte("012")
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// 858927408 = 0x33323130
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// 13620 = 0x3534
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// amd64:`MOVL \$858927408` `MOVW \$13620, 4\(`
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// 386:`MOVL \$858927408` `MOVW \$13620, 4\(`
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// arm64:`MOVD \$858927408` `MOVD \$13620`
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// loong64:`MOVV \$858927408` `MOVV \$13620`
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// wasm:`I64Const \$858927408` `I64Store32 \$0` `I64Const \$13620` `I64Store16 \$4`
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bsink = []byte("012345")
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// 3978425819141910832 = 0x3736353433323130
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// 7306073769690871863 = 0x6564636261393837
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// amd64:`MOVQ \$3978425819141910832` `MOVQ \$7306073769690871863`
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// 386:`MOVL \$858927408, \(` `DUFFCOPY`
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// arm64:`MOVD \$3978425819141910832` `MOVD \$7306073769690871863` `MOVD \$15`
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// loong64:`MOVV \$3978425819141910832` `MOVV \$7306073769690871863` `MOVV \$15`
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// wasm:`I64Const \$3978425819141910832` `I64Store \$0` `I64Const \$7306073769690871863` `I64Store \$7`
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bsink = []byte("0123456789abcde")
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// 56 = 0x38
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// amd64:`MOVQ \$3978425819141910832` `MOVB \$56`
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// loong64:`MOVV \$3978425819141910832` `MOVV \$56`
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bsink = []byte("012345678")
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// 14648 = 0x3938
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// amd64:`MOVQ \$3978425819141910832` `MOVW \$14648`
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// loong64:`MOVV \$3978425819141910832` `MOVV \$14648`
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bsink = []byte("0123456789")
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// 1650538808 = 0x62613938
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// amd64:`MOVQ \$3978425819141910832` `MOVL \$1650538808`
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// loong64:`MOVV \$3978425819141910832` `MOVV \$1650538808`
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bsink = []byte("0123456789ab")
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}
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// self-equality is always true. See issue 60777.
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func EqualSelf(s string) bool {
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// amd64:`MOVL \$1, AX` -`.*memequal.*`
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return s == s
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}
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func NotEqualSelf(s string) bool {
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// amd64:`XORL AX, AX` -`.*memequal.*`
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return s != s
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}
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var bsink []byte
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func HasPrefix3(s string) bool {
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// amd64:-`.*memequal.*`
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return strings.HasPrefix(s, "str")
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}
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func HasPrefix5(s string) bool {
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// amd64:-`.*memequal.*`
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return strings.HasPrefix(s, "strin")
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}
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func HasPrefix6(s string) bool {
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// amd64:-`.*memequal.*`
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return strings.HasPrefix(s, "string")
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}
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func HasPrefix7(s string) bool {
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// amd64:-`.*memequal.*`
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return strings.HasPrefix(s, "strings")
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}
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