IR: define references to Throwable, KCallable and KProperty classes inside IrBuiltIns

(cherry picked from commit f92bda0)

compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/descriptors/IrBuiltIns.kt

@@ -1,17 +1,6 @@
 /*
- * Copyright 2010-2016 JetBrains s.r.o.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
+ * Copyright 2010-2018 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license
+ * that can be found in the license/LICENSE.txt file.
  */
 
 package org.jetbrains.kotlin.ir.descriptors
@@ -133,6 +122,13 @@ class IrBuiltIns(
     val stringType = string.toIrType()
     val stringClass = builtIns.string.toIrSymbol()
 
+    val throwableType = builtIns.throwable.defaultType.toIrType()
+    val throwableClass = builtIns.throwable.toIrSymbol()
+
+    val kCallableClass = builtIns.getBuiltInClassByFqName(KotlinBuiltIns.FQ_NAMES.kCallable.toSafe()).toIrSymbol()
+    val kPropertyClass = builtIns.getBuiltInClassByFqName(KotlinBuiltIns.FQ_NAMES.kProperty.asSingleFqName()).toIrSymbol()
+
+    // TODO switch to IrType
     val primitiveTypes = listOf(bool, char, byte, short, int, long, float, double)
     val primitiveTypesWithComparisons = listOf(int, long, float, double)
     val primitiveFloatingPointTypes = listOf(float, double)