ForLoopsLowering: Handle Iterable.withIndex() where the type is a

bounded type parameter.

TODO: Handle Sequences by extending DefaultIterableHandler.

compiler/testData/codegen/bytecodeText/forLoop/forInIterableWithIndex/forInIterableTypeParameterWithIndex.kt

@@ -0,0 +1,16 @@
+fun <T : Iterable<*>> test(iterable: T): String {
+    val s = StringBuilder()
+
+    for ((index, x) in iterable.withIndex()) {
+        s.append("$index:$x;")
+    }
+
+    return s.toString()
+}
+
+// 0 withIndex
+// 1 iterator
+// 1 hasNext
+// 1 next
+// 0 component1
+// 0 component2

compiler/testData/codegen/bytecodeText/forLoop/forInSequenceWithIndex/forInEmptySequenceWithIndex.kt

@@ -1,3 +1,5 @@
+// IGNORE_BACKEND: JVM_IR
+// TODO: Handle Sequences by extending DefaultIterableHandler.
 val xs = listOf<Any>().asSequence()
 
 fun box(): String {

compiler/testData/codegen/bytecodeText/forLoop/forInSequenceWithIndex/forInSequenceTypeParameterWithIndex.kt

@@ -0,0 +1,18 @@
+// IGNORE_BACKEND: JVM_IR
+// TODO: Handle Sequences by extending DefaultIterableHandler.
+fun <T : Sequence<*>> test(sequence: T): String {
+    val s = StringBuilder()
+
+    for ((index, x) in sequence.withIndex()) {
+        s.append("$index:$x;")
+    }
+
+    return s.toString()
+}
+
+// 0 withIndex
+// 1 iterator
+// 1 hasNext
+// 1 next
+// 0 component1
+// 0 component2

compiler/testData/codegen/bytecodeText/forLoop/forInSequenceWithIndex/forInSequenceWithIndex.kt

@@ -1,3 +1,5 @@
+// IGNORE_BACKEND: JVM_IR
+// TODO: Handle Sequences by extending DefaultIterableHandler.
 val xs = listOf("a", "b", "c", "d").asSequence()
 
 fun box(): String {

compiler/testData/codegen/bytecodeText/forLoop/forInSequenceWithIndex/forInSequenceWithIndexNoElementVar.kt

@@ -1,3 +1,5 @@
+// IGNORE_BACKEND: JVM_IR
+// TODO: Handle Sequences by extending DefaultIterableHandler.
 val xs = listOf("a", "b", "c", "d").asSequence()
 
 fun box(): String {

compiler/testData/codegen/bytecodeText/forLoop/forInSequenceWithIndex/forInSequenceWithIndexNoIndexVar.kt

@@ -1,3 +1,5 @@
+// IGNORE_BACKEND: JVM_IR
+// TODO: Handle Sequences by extending DefaultIterableHandler.
 val xs = listOf("a", "b", "c", "d").asSequence()
 
 fun box(): String {

compiler/testData/codegen/bytecodeText/forLoop/forInSequenceWithIndex/forInSequenceWithIndexThrowsCME.kt

@@ -1,3 +1,5 @@
+// IGNORE_BACKEND: JVM_IR
+// TODO: Handle Sequences by extending DefaultIterableHandler.
 // FULL_JDK
 
 val xsl = arrayListOf("a", "b", "c", "d")

compiler/testData/codegen/bytecodeText/forLoop/forInSequenceWithIndex/forInSequenceWithIndexWithExplicitlyTypedIndexVariable.kt

@@ -1,3 +1,5 @@
+// IGNORE_BACKEND: JVM_IR
+// TODO: Handle Sequences by extending DefaultIterableHandler.
 val xs = listOf("a", "b", "c", "d").asSequence()
 
 fun useAny(x: Any) {}