Add bytecode text tests for ForLoopsLowering.
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committed by
max-kammerer
parent
277cb39e3b
commit
9bb9ab67a7
@@ -0,0 +1,43 @@
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// TARGET_BACKEND: JVM_IR
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fun box(): String {
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for (i in 1..5 step 2 step 1) {
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}
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return "OK"
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}
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// For "step" progressions in JVM IR, a call to getProgressionLastElement() is made to compute the "last" value. This is normally done for
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// each nested call to "step", except when the step value is constant and == 1.
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// If the step is non-constant, there is a check that it is > 0, and if not, an IllegalArgumentException is thrown. However, when the
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// step is constant and > 0, this check does not need to be added.
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//
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// Expected lowered form of loop:
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//
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// // Additional variables:
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// val innerNestedLast = getProgressionLastElement(1, 5, 2)
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//
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// // Standard form of loop over progression
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// var inductionVar = 1
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// val last = innerNestedLast
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// val step = 1
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// if (inductionVar <= last) {
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// // Loop is not empty
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// do {
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// val i = inductionVar
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// inductionVar += step
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// // Loop body
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// } while (i != last)
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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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// 1 INVOKESTATIC kotlin/internal/ProgressionUtilKt.getProgressionLastElement
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// 0 NEW java/lang/IllegalArgumentException
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// 0 ATHROW
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// 1 IF_ICMPGT
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// 1 IF_ICMPNE
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// 2 IF
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