Mark Punzalan
b1ce21bc55
"checked step" (check for a positive step arg) and "negated step" (negate the step arg when the nested step is negative).
58 lines
1.7 KiB
Kotlin
Vendored
58 lines
1.7 KiB
Kotlin
Vendored
// TARGET_BACKEND: JVM_IR
|
|
// WITH_RUNTIME
|
|
fun one() = 1
|
|
|
|
fun box(): String {
|
|
val uintProgression = 1u..7u
|
|
for (i in uintProgression step one()) {
|
|
}
|
|
|
|
return "OK"
|
|
}
|
|
|
|
// For "step" progressions in JVM IR, a call to getProgressionLastElement() is made to compute the "last" value.
|
|
// If "step" is called on a non-literal progression, there is a check to see if that progression's step value is < 0.
|
|
// If the step is non-constant, there is a check that it is > 0, and if not, an IllegalArgumentException is thrown.
|
|
//
|
|
// Expected lowered form of loop:
|
|
//
|
|
// // Additional statements:
|
|
// val progression = intProgression
|
|
// val nestedFirst = progression.first
|
|
// val nestedLast = progression.last
|
|
// val nestedStep = progression.step
|
|
// var stepArg = one()
|
|
// if (stepArg <= 0) throw IllegalArgumentException("Step must be positive, was: $stepArg.")
|
|
// if (nestedStep <= 0) stepArg = -stepArg
|
|
//
|
|
// // Standard form of loop over progression
|
|
// var inductionVar = nestedFirst
|
|
// val last = getProgressionLastElement(nestedFirst, nestedLast, stepArg)
|
|
// if ((stepArg > 0 && inductionVar <= last) || (stepArg < 0 && last <= inductionVar)) {
|
|
// // Loop is not empty
|
|
// do {
|
|
// val i = inductionVar
|
|
// inductionVar += stepArg
|
|
// // Loop body
|
|
// } while (i != last)
|
|
// }
|
|
|
|
// 0 iterator
|
|
// 0 getStart
|
|
// 0 getEnd
|
|
// 1 getFirst
|
|
// 1 getLast
|
|
// 1 getStep
|
|
// 1 INVOKESTATIC kotlin/internal/UProgressionUtilKt.getProgressionLastElement
|
|
// 1 NEW java/lang/IllegalArgumentException
|
|
// 1 ATHROW
|
|
// 2 INVOKESTATIC kotlin/UnsignedKt.uintCompare
|
|
// 3 IFGT
|
|
// 1 IF_ICMPNE
|
|
// 2 IFLE
|
|
// 1 IFGE
|
|
// 7 IF
|
|
// 1 INEG
|
|
// 0 INVOKESTATIC kotlin/UInt.constructor-impl
|
|
// 0 INVOKE\w+ kotlin/UInt.(un)?box-impl
|