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Diffstat (limited to 'test/codegen/strings.go')
| -rw-r--r-- | test/codegen/strings.go | 80 |
1 files changed, 80 insertions, 0 deletions
diff --git a/test/codegen/strings.go b/test/codegen/strings.go new file mode 100644 index 0000000..f98c062 --- /dev/null +++ b/test/codegen/strings.go @@ -0,0 +1,80 @@ +// 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") +} + +// 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 |