IR: Avoid "raw" IrTypes

The ir type checker cannot deal with types with an incorrect number of arguments.
On the other hand, the JVM IR backend sometimes produces "raw types" - types with
generic parameters but without arguments. This commit removes such raw types as
much as possible, by replacing calls to "typeWith()" with calls to "defaultType"
for classes without type parametes (defaultType doesn't allocate, unlike typeWith)
and with calls to "starProjectedType" for classes with type parameters.

compiler/ir/backend.common/src/org/jetbrains/kotlin/backend/common/ir/IrUtils.kt

@@ -8,7 +8,6 @@ package org.jetbrains.kotlin.backend.common.ir
 import org.jetbrains.kotlin.backend.common.CommonBackendContext
 import org.jetbrains.kotlin.backend.common.DumpIrTreeWithDescriptorsVisitor
 import org.jetbrains.kotlin.backend.common.deepCopyWithVariables
-import org.jetbrains.kotlin.backend.common.lower.VariableRemapper
 import org.jetbrains.kotlin.descriptors.ClassKind
 import org.jetbrains.kotlin.descriptors.Modality
 import org.jetbrains.kotlin.descriptors.Visibilities
@@ -369,7 +368,7 @@ fun IrClass.createImplicitParameterDeclarationWithWrappedDescriptor() {
         IrValueParameterSymbolImpl(thisReceiverDescriptor),
         Name.identifier("<this>"),
         index = -1,
-        type = this.symbol.typeWith(this.typeParameters.map { it.defaultType }),
+        type = symbol.typeWithParameters(typeParameters),
         varargElementType = null,
         isCrossinline = false,
         isNoinline = false
@@ -407,7 +406,7 @@ fun IrClass.createParameterDeclarations() {
             IrValueParameterSymbolImpl(it),
             Name.special("<this>"),
             0,
-            symbol.typeWith(typeParameters.map { it.defaultType }),
+            symbol.typeWithParameters(typeParameters),
             null,
             false,
             false

compiler/ir/backend.common/src/org/jetbrains/kotlin/backend/common/lower/loops/ProgressionHandlers.kt

@@ -228,7 +228,7 @@ internal class StepHandler(
     private val symbols = context.ir.symbols
 
     override val matcher = SimpleCalleeMatcher {
-        singleArgumentExtension(FqName("kotlin.ranges.step"), symbols.progressionClasses.map { it.typeWith() })
+        singleArgumentExtension(FqName("kotlin.ranges.step"), symbols.progressionClasses.map { it.owner.defaultType })
         parameter(0) { it.type.isInt() || it.type.isLong() }
     }