Files
kotlin/compiler/testData/codegen/bytecodeText/forLoop/unsigned/untilProgressionToNonConst.kt
Mark Punzalan 177967258b ForLoopsLowering: Eliminate construction/boxing/unboxing of UInt/ULong.
This needs further cleanup to encapsulate more logic into ProgressionType.
2020-05-13 13:54:35 +02:00

48 lines
1.2 KiB
Kotlin
Vendored

// TARGET_BACKEND: JVM_IR
// WITH_RUNTIME
fun nine() = 9u
fun box(): String {
for (i in 1u until nine() step 2) {
}
return "OK"
}
// For "until" progressions in JVM IR, there is a check that the range is not empty: upper bound != MIN_VALUE.
//
// Expected lowered form of loop (before bytecode optimizations):
//
// // Additional variables:
// val untilArg = nine()
// val nestedLast = untilArg - 1u
//
// // Standard form of loop over progression
// var inductionVar = 1
// val last = getProgressionLastElement(1u, nestedLast, 2)
// val step = 2
// if (untilArg != UInt.MIN_VALUE && 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
// 1 INVOKESTATIC kotlin/internal/UProgressionUtilKt.getProgressionLastElement
// 0 NEW java/lang/IllegalArgumentException
// 1 INVOKESTATIC kotlin/UnsignedKt.uintCompare
// 1 IFEQ
// 1 IFGT
// 1 IF_ICMPNE
// 3 IF
// 0 INVOKESTATIC kotlin/UInt.constructor-impl
// 0 INVOKE\w+ kotlin/UInt.(un)?box-impl