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ef5e02da84
* In blocks, discard the result of any statement that has a return type other than void. This was previously done by wrapping each statement into an "implicit Unit conversion" that was actually compiled down to a stack pop instead. If an expression happened to already have type Unit, however, such a conversion was not inserted, resulting in a stray reference on the stack. These conversions are now redundant and should probably be removed. * In assignments and non-exhaustive conditionals, materialize a Unit on the stack to avoid depth mismatches that trip up the bytecode validator. Because such expressions are generally used at block level (and, indeed, the frontend will reject a non-exhaustive conditional used as an expression), combined with the above change this results in no additional GETSTATIC opcodes, as they are immediately removed by the peephole optimizer.
27 lines
509 B
Kotlin
Vendored
27 lines
509 B
Kotlin
Vendored
// CHECK_CASES_COUNT: function=test1 count=2
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// CHECK_IF_COUNT: function=test1 count=0
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// CHECK_BREAKS_COUNT: function=test1 count=1
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// CHECK_CASES_COUNT: function=test2 count=2
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// CHECK_IF_COUNT: function=test2 count=0
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// CHECK_BREAKS_COUNT: function=test2 count=1
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fun test1(v: Int) {
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when (v) {
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1, 2 -> Unit
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}
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}
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fun test2(v: Int) {
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loop@ while(true) {
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when (v) {
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1, 2 -> break@loop
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}
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}
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}
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fun box(): String {
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test1(1)
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test2(1)
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return "OK"
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} |