Files
kotlin/compiler/testData/codegen/bytecodeText/safeAsWithMutable.kt
Dmitry Petrov 06d9ff6a71 KT-9377 Support is-checks for read-only collections
Generate better code for 'as?' with mutable collection types:
use CHECKCAST, do not introduce special intrinsics for safe-as.
2015-10-02 15:17:00 +03:00

13 lines
454 B
Kotlin
Vendored

// For mutable collections and related types (e.g., MutableList, MutableListIterator)
// 'as?' should be generated as a single 'safeAs...' intrinsic call
// without instanceof or 'is...'.
fun test() {
val x: Any = arrayListOf("abc", "def")
x as? MutableList<*>
}
// 0 INSTANCEOF
// 1 INVOKESTATIC kotlin/jvm/internal/TypeIntrinsics\.isMutableList
// 0 INVOKESTATIC kotlin/jvm/internal/TypeIntrinsics\.asMutableList
// 1 CHECKCAST java/util/List