diff --git a/compiler/backend/src/org/jetbrains/jet/codegen/ExpressionCodegen.java b/compiler/backend/src/org/jetbrains/jet/codegen/ExpressionCodegen.java
index 64f12f77e08..f6743388338 100644
--- a/compiler/backend/src/org/jetbrains/jet/codegen/ExpressionCodegen.java
+++ b/compiler/backend/src/org/jetbrains/jet/codegen/ExpressionCodegen.java
@@ -151,7 +151,7 @@ public class ExpressionCodegen extends JetVisitor<StackValue, StackValue> implem
     }
 
     static class FinallyBlockStackElement extends BlockStackElement {
-        List<Label> gaps = new ArrayList();
+        List<Label> gaps = new ArrayList<Label>();
 
         final JetTryExpression expression;
 
@@ -178,21 +178,17 @@ public class ExpressionCodegen extends JetVisitor<StackValue, StackValue> implem
         this.returnType = returnType;
         this.state = state;
         this.methodVisitor = v;
-        this.v = createInstructionAdapter(methodVisitor);
-        this.bindingContext = state.getBindingContext();
-        this.context = context;
-        this.statementVisitor = new CodegenStatementVisitor(this);
-        this.tailRecursionCodegen = new TailRecursionCodegen(context, this, this.v, state);
-    }
-
-    protected InstructionAdapter createInstructionAdapter(MethodVisitor mv) {
-        return new InstructionAdapter(methodVisitor) {
+        this.v = new InstructionAdapter(methodVisitor) {
             @Override
             public void visitLocalVariable(String name, String desc, String signature, Label start, Label end, int index) {
                 super.visitLocalVariable(name, desc, signature, start, end, index);
                 localVariableNames.add(name);
             }
         };
+        this.bindingContext = state.getBindingContext();
+        this.context = context;
+        this.statementVisitor = new CodegenStatementVisitor(this);
+        this.tailRecursionCodegen = new TailRecursionCodegen(context, this, this.v, state);
     }
 
     public GenerationState getState() {
@@ -1150,16 +1146,16 @@ public class ExpressionCodegen extends JetVisitor<StackValue, StackValue> implem
 
     @Override
     public StackValue visitBreakExpression(@NotNull JetBreakExpression expression, StackValue receiver) {
-        return visitBreakOrContinueExpression(expression, receiver, true);
+        return generateBreakOrContinueExpression(expression, true);
     }
 
     @Override
     public StackValue visitContinueExpression(@NotNull JetContinueExpression expression, StackValue receiver) {
-        return visitBreakOrContinueExpression(expression, receiver, false);
+        return generateBreakOrContinueExpression(expression, false);
     }
 
     @NotNull
-    private StackValue visitBreakOrContinueExpression(@NotNull JetLabelQualifiedExpression expression, StackValue receiver, boolean isBreak) {
+    private StackValue generateBreakOrContinueExpression(@NotNull JetLabelQualifiedExpression expression, boolean isBreak) {
         assert expression instanceof JetContinueExpression || expression instanceof JetBreakExpression;
 
         if (!blockStackElements.isEmpty()) {
@@ -1186,11 +1182,9 @@ public class ExpressionCodegen extends JetVisitor<StackValue, StackValue> implem
             }
 
             blockStackElements.pop();
-            StackValue result = visitBreakOrContinueExpression(expression, receiver, isBreak);
+            StackValue result = generateBreakOrContinueExpression(expression, isBreak);
             blockStackElements.push(stackElement);
             return result;
-
-
         }
 
         throw new UnsupportedOperationException("Target label for break/continue not found");
@@ -1812,6 +1806,7 @@ public class ExpressionCodegen extends JetVisitor<StackValue, StackValue> implem
             int flags = AsmUtil.getVisibilityForSpecialPropertyBackingField(propertyDescriptor, isDelegatedProperty);
             skipPropertyAccessors = (flags & ACC_PRIVATE) == 0 || methodKind == MethodKind.SYNTHETIC_ACCESSOR || methodKind == MethodKind.INITIALIZER;
             if (!skipPropertyAccessors) {
+                //noinspection ConstantConditions
                 propertyDescriptor = (PropertyDescriptor) backingFieldContext.getAccessor(propertyDescriptor, true, delegateType);
             }
             isStatic = true;
@@ -1869,6 +1864,7 @@ public class ExpressionCodegen extends JetVisitor<StackValue, StackValue> implem
         }
 
         String name;
+        //noinspection ConstantConditions
         if (propertyDescriptor.getContainingDeclaration() == backingFieldContext.getContextDescriptor()) {
             assert backingFieldContext instanceof FieldOwnerContext : "Actual context is " + backingFieldContext + " but should be instance of FieldOwnerContext" ;
             name = ((FieldOwnerContext) backingFieldContext).getFieldName(propertyDescriptor, isDelegatedProperty);
@@ -1947,6 +1943,7 @@ public class ExpressionCodegen extends JetVisitor<StackValue, StackValue> implem
             v.anew(asmType);
             v.dup();
 
+            @SuppressWarnings("ConstantConditions")
             Type functionType = typeMapper.mapType(samInterface.getFunctionTypeForSamInterface());
             expression.accept(visitor, StackValue.none()).put(functionType, v);
 
@@ -2097,7 +2094,7 @@ public class ExpressionCodegen extends JetVisitor<StackValue, StackValue> implem
         }
     }
 
-    private boolean isCallAsFunctionObject(FunctionDescriptor fd) {
+    private static boolean isCallAsFunctionObject(FunctionDescriptor fd) {
         if (fd instanceof ExpressionAsFunctionDescriptor) {
             JetExpression deparenthesize = JetPsiUtil.deparenthesize(((ExpressionAsFunctionDescriptor) fd).getExpression());
             return !(deparenthesize instanceof JetCallableReferenceExpression || deparenthesize instanceof JetFunctionLiteralExpression);
@@ -2294,7 +2291,7 @@ public class ExpressionCodegen extends JetVisitor<StackValue, StackValue> implem
     }
 
     @NotNull
-    private CodegenContext getNotNullParentContextForMethod(@NotNull CodegenContext cur) {
+    private static CodegenContext getNotNullParentContextForMethod(CodegenContext cur) {
         if (cur instanceof MethodContext) {
             cur = cur.getParentContext();
         }
@@ -3549,8 +3546,8 @@ The "returned" value of try expression with no finally is either the last expres
         }
     }
 
-
-    private List<Label> getCurrentCatchIntervals(
+    @NotNull
+    private static List<Label> getCurrentCatchIntervals(
             @Nullable FinallyBlockStackElement finallyBlockStackElement,
             @NotNull Label blockStart,
             @NotNull Label blockEnd
diff --git a/compiler/backend/src/org/jetbrains/jet/codegen/ImplementationBodyCodegen.java b/compiler/backend/src/org/jetbrains/jet/codegen/ImplementationBodyCodegen.java
index 9b1200f9e2b..3ae8d673701 100644
--- a/compiler/backend/src/org/jetbrains/jet/codegen/ImplementationBodyCodegen.java
+++ b/compiler/backend/src/org/jetbrains/jet/codegen/ImplementationBodyCodegen.java
@@ -217,6 +217,7 @@ public class ImplementationBodyCodegen extends ClassBodyCodegen {
         ClassData data = new ClassData(createNameResolver(serializer.getNameTable()), classProto);
 
         AnnotationVisitor av = v.getVisitor().visitAnnotation(asmDescByFqNameWithoutInnerClasses(JvmAnnotationNames.KOTLIN_CLASS), true);
+        //noinspection ConstantConditions
         av.visit(JvmAnnotationNames.ABI_VERSION_FIELD_NAME, JvmAbi.VERSION);
         AnnotationVisitor array = av.visitArray(JvmAnnotationNames.DATA_FIELD_NAME);
         for (String string : BitEncoding.encodeBytes(data.toBytes())) {
@@ -1068,7 +1069,7 @@ public class ImplementationBodyCodegen extends ClassBodyCodegen {
     private void generateClassObjectBackingFieldCopies() {
         if (classObjectPropertiesToCopy != null) {
             for (PropertyAndDefaultValue propertyInfo : classObjectPropertiesToCopy) {
-                PropertyDescriptor propertyDescriptor = propertyInfo.propertyDescriptor;
+                PropertyDescriptor propertyDescriptor = propertyInfo.descriptor;
 
                 FieldVisitor fv = v.newField(null, ACC_STATIC | ACC_FINAL | ACC_PUBLIC, context.getFieldName(propertyDescriptor),
                                                   typeMapper.mapType(propertyDescriptor).getDescriptor(), null, propertyInfo.defaultValue);
@@ -1224,13 +1225,11 @@ public class ImplementationBodyCodegen extends ClassBodyCodegen {
             ImplementationBodyCodegen parentCodegen = getParentBodyCodegen(this);
             //generate object$
             parentCodegen.genInitSingleton(descriptor, StackValue.singleton(descriptor, typeMapper));
-            parentCodegen.generateInitializers(parentCodegen.createOrGetClInitCodegen(),
-                                               myClass.getDeclarations(), bindingContext, state);
+            generateInitializers(parentCodegen.createOrGetClInitCodegen(), myClass.getDeclarations(), bindingContext, state);
         } else {
             generateInitializers(codegen, myClass.getDeclarations(), bindingContext, state);
         }
 
-
         iv.visitInsn(RETURN);
     }
 
@@ -1435,7 +1434,7 @@ public class ImplementationBodyCodegen extends ClassBodyCodegen {
     }
 
 
-    private void generateDelegationToTraitImpl(final @NotNull FunctionDescriptor fun, @NotNull FunctionDescriptor inheritedFun) {
+    private void generateDelegationToTraitImpl(@NotNull FunctionDescriptor fun, @NotNull FunctionDescriptor inheritedFun) {
         DeclarationDescriptor containingDeclaration = fun.getContainingDeclaration();
         if (!(containingDeclaration instanceof ClassDescriptor)) {
             return;
@@ -1873,17 +1872,13 @@ public class ImplementationBodyCodegen extends ClassBodyCodegen {
         classObjectPropertiesToCopy.add(new PropertyAndDefaultValue(descriptor, defaultValue));
     }
 
-    static class PropertyAndDefaultValue {
+    private static class PropertyAndDefaultValue {
+        public final PropertyDescriptor descriptor;
+        public final Object defaultValue;
 
-        PropertyAndDefaultValue(PropertyDescriptor propertyDescriptor, Object defaultValue) {
-            this.propertyDescriptor = propertyDescriptor;
+        public PropertyAndDefaultValue(PropertyDescriptor descriptor, Object defaultValue) {
+            this.descriptor = descriptor;
             this.defaultValue = defaultValue;
         }
-
-        private PropertyDescriptor propertyDescriptor;
-
-        private Object defaultValue;
-
-
     }
 }
diff --git a/compiler/backend/src/org/jetbrains/jet/codegen/state/JetTypeMapper.java b/compiler/backend/src/org/jetbrains/jet/codegen/state/JetTypeMapper.java
index a826e437f40..4ecbd93562a 100644
--- a/compiler/backend/src/org/jetbrains/jet/codegen/state/JetTypeMapper.java
+++ b/compiler/backend/src/org/jetbrains/jet/codegen/state/JetTypeMapper.java
@@ -853,22 +853,18 @@ public class JetTypeMapper extends BindingTraceAware {
 
             JetDelegatorToSuperCall superCall = closure.getSuperCall();
             if (superCall != null) {
-                DeclarationDescriptor superDescriptor = bindingContext.get(BindingContext.REFERENCE_TARGET,
-                                                                                                    superCall
-                                                                                                            .getCalleeExpression()
-                                                                                                            .getConstructorReferenceExpression());
+                DeclarationDescriptor superDescriptor = bindingContext
+                        .get(BindingContext.REFERENCE_TARGET, superCall.getCalleeExpression().getConstructorReferenceExpression());
 
-                if(superDescriptor instanceof ConstructorDescriptor) {
+                if (superDescriptor instanceof ConstructorDescriptor) {
                     ConstructorDescriptor superConstructor = (ConstructorDescriptor) superDescriptor;
 
                     if (isObjectLiteral(bindingContext, descriptor.getContainingDeclaration())) {
                         List<JvmMethodParameterSignature> types = mapConstructorSignature(superConstructor).getKotlinParameterTypes();
-                        if (types != null) {
-                            for (JvmMethodParameterSignature type : types) {
-                                signatureWriter.writeParameterType(JvmMethodParameterKind.SUPER_CALL_PARAM);
-                                signatureWriter.writeAsmType(type.getAsmType());
-                                signatureWriter.writeParameterTypeEnd();
-                            }
+                        for (JvmMethodParameterSignature type : types) {
+                            signatureWriter.writeParameterType(JvmMethodParameterKind.SUPER_CALL_PARAM);
+                            signatureWriter.writeAsmType(type.getAsmType());
+                            signatureWriter.writeParameterTypeEnd();
                         }
                     }
                 }