kotlin/compiler/testData/codegen/bytecodeText/deadCodeElimination/literal.kt at 05937a28eeabf6b34d9300a8156f3df1f56ada11 - kotlin - Gitea: Git with a cup of tea

jlengrand/kotlin

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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

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Kotlin

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 fun box() {
     val x: Any? = "abc"
     val y: Any? = if (1 == 1) x else "cde"
     x!!
     y!!
 }
 // 0 IFNULL
 // 0 IFNONNULL
 // 0 throwNpe
 // 0 ATHROW