kotlin/compiler/testData/codegen/bytecodeText/nullCheckOptimization/kt12839.kt at a7c8fdcbe2e260e5265aaf5121c5987206a676c9 - kotlin - Gitea: Git with a cup of tea

jlengrand/kotlin

mirror of https://github.com/jlengrand/kotlin.git synced 2026-05-08 15:53:19 +00:00

Files

Mads Ager 690b8e0ac9 JVM_IR: Optimize null checks.

Introduce lowering to remove null checks for primitive type
expressions and replace them with true/false. Side-effects
are preserved.

Generate ifnull/ifnonnull instructions for null checks instead
of materializing a null literal for an equality check.

2019-01-19 09:43:43 +01:00

10 lines

144 B

Kotlin

Vendored

Raw Blame History

 fun test() {
     val value = System.getProperty("key")
     if (value != null) {
         value.toUpperCase()
     }
 }
 // 1 IFNULL
 // 0 IFNONNULL