Dmitry Petrov
36 lines
878 B
Kotlin
Vendored
36 lines
878 B
Kotlin
Vendored
// IGNORE_BACKEND_FIR: JVM_IR
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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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const val M = Int.MIN_VALUE
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fun f(a: Int): Int {
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var n = 0
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for (i in a downTo M) {
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n++
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}
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return n
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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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// 2 IF_ICMP
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// 2 IF
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// JVM_IR_TEMPLATES
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// 4 ILOAD
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// 2 ISTORE
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// 0 IADD
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// 0 ISUB
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// 2 IINC |