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strings.go
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// asmcheck
// Copyright 2018 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
// This file contains code generation tests related to the handling of
// string types.
func CountRunes(s string) int { // Issue #24923
// amd64:`.*countrunes`
return len([]rune(s))
}
func CountBytes(s []byte) int {
// amd64:-`.*runtime.slicebytetostring`
return len(string(s))
}
func ToByteSlice() []byte { // Issue #24698
// amd64:`LEAQ\ttype:\[3\]uint8`
// amd64:`CALL\truntime\.newobject`
// amd64:-`.*runtime.stringtoslicebyte`
return []byte("foo")
}
func ConvertToByteSlice(a, b, c string) []byte {
// amd64:`.*runtime.concatbyte3`
return []byte(a + b + c)
}
// Loading from read-only symbols should get transformed into constants.
func ConstantLoad() {
// 12592 = 0x3130
// 50 = 0x32
// amd64:`MOVW\t\$12592, \(`,`MOVB\t\$50, 2\(`
// 386:`MOVW\t\$12592, \(`,`MOVB\t\$50, 2\(`
// arm:`MOVW\t\$48`,`MOVW\t\$49`,`MOVW\t\$50`
// arm64:`MOVD\t\$12592`,`MOVD\t\$50`
// wasm:`I64Const\t\$12592`,`I64Store16\t\$0`,`I64Const\t\$50`,`I64Store8\t\$2`
// mips64:`MOVV\t\$48`,`MOVV\t\$49`,`MOVV\t\$50`
bsink = []byte("012")
// 858927408 = 0x33323130
// 13620 = 0x3534
// amd64:`MOVL\t\$858927408`,`MOVW\t\$13620, 4\(`
// 386:`MOVL\t\$858927408`,`MOVW\t\$13620, 4\(`
// arm64:`MOVD\t\$858927408`,`MOVD\t\$13620`
// wasm:`I64Const\t\$858927408`,`I64Store32\t\$0`,`I64Const\t\$13620`,`I64Store16\t\$4`
bsink = []byte("012345")
// 3978425819141910832 = 0x3736353433323130
// 7306073769690871863 = 0x6564636261393837
// amd64:`MOVQ\t\$3978425819141910832`,`MOVQ\t\$7306073769690871863`
// 386:`MOVL\t\$858927408, \(`,`DUFFCOPY`
// arm64:`MOVD\t\$3978425819141910832`,`MOVD\t\$7306073769690871863`,`MOVD\t\$15`
// wasm:`I64Const\t\$3978425819141910832`,`I64Store\t\$0`,`I64Const\t\$7306073769690871863`,`I64Store\t\$7`
bsink = []byte("0123456789abcde")
// 56 = 0x38
// amd64:`MOVQ\t\$3978425819141910832`,`MOVB\t\$56`
bsink = []byte("012345678")
// 14648 = 0x3938
// amd64:`MOVQ\t\$3978425819141910832`,`MOVW\t\$14648`
bsink = []byte("0123456789")
// 1650538808 = 0x62613938
// amd64:`MOVQ\t\$3978425819141910832`,`MOVL\t\$1650538808`
bsink = []byte("0123456789ab")
}
// self-equality is always true. See issue 60777.
func EqualSelf(s string) bool {
// amd64:`MOVL\t\$1, AX`,-`.*memequal.*`
return s == s
}
func NotEqualSelf(s string) bool {
// amd64:`XORL\tAX, AX`,-`.*memequal.*`
return s != s
}
var bsink []byte