kotlin/compiler/testData/codegen/box/boxingOptimization/intCompareTo.kt at d4f25e104364eaef8a9e95773cfdfd39d7c33ce2 - kotlin - Gitea: Git with a cup of tea

jlengrand/kotlin

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Dmitry Petrov e1b41eee15 Specialize Comparable#compareTo for boxed primitives

Support Comparable#compareTo for boxed primitive in redundant
boxing/unboxing analysis, along with CHECKCAST to java.lang.Comparable.

Note that we can do that for Float and Double, too, because
Float#compareTo(Float) and Double#compareTo(Double) are delegated to
Float#compare(float, float) and Double#compare(double, double),
respectively.

Fuse specialized comparison for integers with conditional jumps
if possible (both for Comparable#compareTo and Intrinsics#areEqual).

 #KT-11959 Fixed

2017-05-22 11:57:20 +03:00

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 fun box(): String {
     val a: Any = 1
     val b: Any = 42
     val test = (a as Comparable<Any>).compareTo(b)
     if (test != -1) return "Fail: $test"
     return "OK"
 }