Files
kotlin/compiler/testData/codegen/bytecodeText/forLoop/unsigned/stepThenDifferentStep.kt
2020-05-13 13:54:35 +02:00

45 lines
1.2 KiB
Kotlin
Vendored

// TARGET_BACKEND: JVM_IR
// WITH_RUNTIME
fun box(): String {
for (i in 1u..7u step 3 step 2) {
}
return "OK"
}
// For "step" progressions in JVM IR, a call to getProgressionLastElement() is made to compute the "last" value. This is done for each
// nested call to "step".
// If the step is non-constant, there is a check that it is > 0, and if not, an IllegalArgumentException is thrown. However, when the
// step is constant and > 0, this check does not need to be added.
//
// Expected lowered form of loop:
//
// // Additional variables:
// val outerNestedLast = getProgressionLastElement(1u, 7u, 3)
//
// // Standard form of loop over progression
// var inductionVar = 1u
// val last = getProgressionLastElement(1u, outerNestedLast, 2)
// val step = 2
// if (inductionVar <= last) {
// // Loop is not empty
// do {
// val i = inductionVar
// inductionVar += step
// // Loop body
// } while (i != last)
// }
// 0 iterator
// 0 getStart
// 0 getEnd
// 0 getFirst
// 0 getLast
// 0 getStep
// 2 INVOKESTATIC kotlin/internal/UProgressionUtilKt.getProgressionLastElement
// 0 NEW java/lang/IllegalArgumentException
// 0 ATHROW
// 1 INVOKESTATIC kotlin/UnsignedKt.uintCompare
// 1 IFGT
// 1 IF_ICMPNE
// 2 IF