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40 lines
1.1 KiB
Kotlin
Vendored
40 lines
1.1 KiB
Kotlin
Vendored
// TARGET_BACKEND: JVM_IR
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fun box(): String {
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for (i in 1..6 step 0) {
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}
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return "OK"
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}
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// For "step" progressions in JVM IR, if the step is constant and <= 0, the expression for step is replaced with an
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// IllegalArgumentException. The backend can then eliminate the entire loop and the rest of the function as dead code.
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//
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// Expected lowered form of loop (before bytecode optimization):
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//
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// // Additional variables:
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// val newStep = throw IllegalArgumentException("Step must be positive, was: 0.")
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//
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// // Standard form of loop over progression
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// var inductionVar = 1
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// val last = getProgressionLastElement(1, 6, newStep)
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// val step = newStep
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// if (inductionVar <= last) {
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// // Loop is not empty
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// do {
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// val i = inductionVar
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// inductionVar += step
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// // Loop body
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// } while (i != last)
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// }
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// 0 iterator
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// 0 getStart
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// 0 getEnd
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// 0 getFirst
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// 0 getLast
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// 0 getStep
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// 0 INVOKESTATIC kotlin/internal/ProgressionUtilKt.getProgressionLastElement
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// 1 NEW java/lang/IllegalArgumentException
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// 1 ATHROW
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// 0 IF
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// 0 ARETURN |