Files
kotlin-fork/compiler/testData/codegen/box/strings/concatGenericWithStringUpperBound.kt
T
Dmitry Petrov 3017397960 JVM_IR fix string concatenation performance issues
KT-50080 KT-50084 KT-50140
2021-12-09 15:32:13 +03:00

38 lines
1.4 KiB
Kotlin
Vendored

// KOTLIN_CONFIGURATION_FLAGS: STRING_CONCAT=inline
// WITH_STDLIB
import kotlin.test.assertEquals
fun concatAny(x: Any) = "$x!!"
fun <T : String> concat1(x: T) = "[[$x]]"
fun <T : String?> concat2(x: T) = "[[$x]]"
fun <T : String> concat3(x: T?) = "[[$x]]"
fun <T : String> concat4(x: T) = x + "!!"
fun <T : String?> concat5(x: T) = x + "!!"
fun <T : String> concat6(x: T?) = x + "!!"
fun box(): String {
assertEquals("[[1]]", concat1("1"))
assertEquals("[[2]]", concat2("2"))
assertEquals("[[null]]", concat2(null))
assertEquals("[[3]]", concat3("3"))
assertEquals("[[null]]", concat3(null))
assertEquals("4!!", concat4("4"))
assertEquals("5!!", concat5("5"))
assertEquals("null!!", concat5("null"))
assertEquals("6!!", concat5("6"))
assertEquals("null!!", concat5("null"))
return "OK"
}
// CHECK_BYTECODE_TEXT
// JVM_IR_TEMPLATES
// 1 INVOKEVIRTUAL java/lang/StringBuilder\.append \(Ljava/lang/Object;\)Ljava/lang/StringBuilder;
// ^ single instance of 'StringBuilder.append(Object)' from 'concatAny',
// keep it here to make sure there's no error in regexp.
// 16 INVOKEVIRTUAL java/lang/StringBuilder\.append \(Ljava/lang/String;\)Ljava/lang/StringBuilder;
// ^ everything else is done with 'StringBuilder.append(String)'
// 17 INVOKEVIRTUAL java/lang/StringBuilder\.append
// ^ no other instances of StringBuidler.append(...)