Ranges support. (#73)

backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/llvm/IrToBitcode.kt

@@ -224,6 +224,11 @@ internal class CodeGeneratorVisitor(val context: Context) : IrElementVisitorVoid
     //-------------------------------------------------------------------------//
 
     override fun visitConstructor(constructorDeclaration: IrConstructor) {
+        if (constructorDeclaration.descriptor.containingDeclaration.isIntrinsic) {
+            // Do not generate any ctors for intrinsic classes.
+            return
+        }
+
         codegen.prologue(constructorDeclaration)
         val constructorDescriptor = constructorDeclaration.descriptor
         val classDescriptor = DescriptorUtils.getContainingClass(constructorDescriptor)
@@ -389,8 +394,9 @@ internal class CodeGeneratorVisitor(val context: Context) : IrElementVisitorVoid
             return
         }
 
-        if (declaration.descriptor.isIntrinsic) {
-            // do not generate any code for intrinsic classes as they require special handling
+        if (KotlinBuiltIns.isUnit(declaration.descriptor.defaultType)) {
+            // Do not generate any code for Unit.
+            // TODO: Unit has toString() operation, which we may want to support.
             return
         }
 

backend.native/tests/build.gradle

@@ -574,3 +574,8 @@ task unreachable1(type: RunKonanTest) {
     goldValue = "1\n"
     source = "codegen/controlflow/unreachable1.kt"
 }
+
+task range0(type: RunKonanTest) {
+    goldValue = "123\nabcd\n"
+    source = "runtime/collections/range0.kt"
+}

backend.native/tests/runtime/collections/range0.kt

@@ -0,0 +1,6 @@
+fun main(args : Array<String>) {
+    for (i in 1..3) print(i)
+    println()
+    for (i in 'a'..'d') print(i)
+    println()
+}