Dmitry Petrov
36 lines
1.2 KiB
Kotlin
Vendored
36 lines
1.2 KiB
Kotlin
Vendored
// TARGET_BACKEND: JVM_IR
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// WITH_RUNTIME
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// IMPORTANT!
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// Please, when your changes cause failures in bytecodeText tests for 'for' loops,
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// examine the resulting bytecode shape carefully.
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// Range and progression-based loops generated with Kotlin compiler should be
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// as close as possible to Java counter loops ('for (int i = a; i < b; ++i) { ... }').
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// Otherwise it may result in performance regression due to missing HotSpot optimizations.
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// Run Kotlin compiler benchmarks (https://github.com/Kotlin/kotlin-benchmarks)
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// with compiler built from your changes if you are not sure.
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fun box(): String {
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for (i in 1u..6u 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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// 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
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// 0 INVOKESTATIC kotlin/UInt.constructor-impl
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// 0 INVOKE\w+ kotlin/UInt.(un)?box-impl
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