diff --git a/jadx-core/src/main/java/jadx/api/Decompiler.java b/jadx-core/src/main/java/jadx/api/Decompiler.java
index 4e7b4dded..afa3a7f77 100644
--- a/jadx-core/src/main/java/jadx/api/Decompiler.java
+++ b/jadx-core/src/main/java/jadx/api/Decompiler.java
@@ -8,7 +8,6 @@ import jadx.core.dex.nodes.RootNode;
 import jadx.core.dex.visitors.IDexTreeVisitor;
 import jadx.core.dex.visitors.SaveCode;
 import jadx.core.utils.ErrorsCounter;
-import jadx.core.utils.exceptions.CodegenException;
 import jadx.core.utils.exceptions.DecodeException;
 import jadx.core.utils.exceptions.JadxRuntimeException;
 import jadx.core.utils.files.InputFile;
@@ -116,21 +115,12 @@ public final class Decompiler {
 		LOG.info("processing ...");
 		ThreadPoolExecutor executor = (ThreadPoolExecutor) Executors.newFixedThreadPool(threadsCount);
 		for (final ClassNode cls : root.getClasses(false)) {
-			if (cls.getCode() == null) {
-				Runnable job = new Runnable() {
-					@Override
-					public void run() {
-						ProcessClass.process(cls, passList);
-					}
-				};
-				executor.execute(job);
-			} else {
-				try {
-					savePass.visit(cls);
-				} catch (CodegenException e) {
-					LOG.error("Can't save class {}", cls, e);
+			executor.execute(new Runnable() {
+				@Override
+				public void run() {
+					ProcessClass.process(cls, passList);
 				}
-			}
+			});
 		}
 		executor.shutdown();
 		return executor;
diff --git a/jadx-core/src/main/java/jadx/core/dex/visitors/DotGraphVisitor.java b/jadx-core/src/main/java/jadx/core/dex/visitors/DotGraphVisitor.java
index d1dbee386..b90521ea1 100644
--- a/jadx-core/src/main/java/jadx/core/dex/visitors/DotGraphVisitor.java
+++ b/jadx-core/src/main/java/jadx/core/dex/visitors/DotGraphVisitor.java
@@ -23,15 +23,11 @@ import java.util.Set;
 public class DotGraphVisitor extends AbstractVisitor {
 
 	private static final String NL = "\\l";
-	private static final boolean PRINT_REGISTERS_STATES = false;
 
 	private final File dir;
 	private final boolean useRegions;
 	private final boolean rawInsn;
 
-	private CodeWriter dot;
-	private CodeWriter conn;
-
 	public DotGraphVisitor(File outDir, boolean useRegions, boolean rawInsn) {
 		this.dir = outDir;
 		this.useRegions = useRegions;
@@ -47,186 +43,179 @@ public class DotGraphVisitor extends AbstractVisitor {
 		if (mth.isNoCode()) {
 			return;
 		}
-		dot = new CodeWriter();
-		conn = new CodeWriter();
-
-		dot.startLine("digraph \"CFG for");
-		dot.add(escape(mth.getParentClass().getFullName() + "." + mth.getMethodInfo().getShortId()));
-		dot.add("\" {");
-
-		if (useRegions) {
-			if (mth.getRegion() == null) {
-				return;
-			}
-			processMethodRegion(mth);
-		} else {
-			for (BlockNode block : mth.getBasicBlocks()) {
-				processBlock(mth, block);
-			}
-		}
-
-		dot.startLine("MethodNode[shape=record,label=\"{");
-		dot.add(escape(mth.getAccessFlags().makeString()));
-		dot.add(escape(mth.getReturnType() + " "
-				+ mth.getParentClass().getFullName() + "." + mth.getName()
-				+ "(" + Utils.listToString(mth.getArguments(true)) + ") "));
-
-		String attrs = attributesString(mth);
-		if (attrs.length() != 0) {
-			dot.add(" | ").add(attrs);
-		}
-		dot.add("}\"];");
-
-		dot.startLine("MethodNode -> ").add(makeName(mth.getEnterBlock())).add(';');
-
-		dot.add(conn.toString());
-
-		dot.startLine('}');
-		dot.startLine();
-
-		String fileName = Utils.escape(mth.getMethodInfo().getShortId())
-				+ (useRegions ? ".regions" : "")
-				+ (rawInsn ? ".raw" : "")
-				+ ".dot";
-		dot.save(dir, mth.getParentClass().getClassInfo().getFullPath() + "_graphs", fileName);
+		new DumpDotGraph().process(mth);
 	}
 
-	private void processMethodRegion(MethodNode mth) {
-		processRegion(mth, mth.getRegion());
-		for (ExceptionHandler h : mth.getExceptionHandlers()) {
-			if (h.getHandlerRegion() != null) {
-				processRegion(mth, h.getHandlerRegion());
-			}
-		}
-		Set<BlockNode> regionsBlocks = new HashSet<BlockNode>(mth.getBasicBlocks().size());
-		RegionUtils.getAllRegionBlocks(mth.getRegion(), regionsBlocks);
-		for (ExceptionHandler handler : mth.getExceptionHandlers()) {
-			IContainer handlerRegion = handler.getHandlerRegion();
-			if (handlerRegion != null) {
-				RegionUtils.getAllRegionBlocks(handlerRegion, regionsBlocks);
-			}
-		}
-		for (BlockNode block : mth.getBasicBlocks()) {
-			if (!regionsBlocks.contains(block)) {
-				processBlock(mth, block, true);
-			}
-		}
-	}
+	private class DumpDotGraph {
+		private CodeWriter dot = new CodeWriter();
+		private CodeWriter conn = new CodeWriter();
 
-	private void processRegion(MethodNode mth, IContainer region) {
-		if (region instanceof IRegion) {
-			IRegion r = (IRegion) region;
-			dot.startLine("subgraph " + makeName(region) + " {");
-			dot.startLine("label = \"").add(r);
-			String attrs = attributesString(r);
+		public void process(MethodNode mth) {
+			dot.startLine("digraph \"CFG for");
+			dot.add(escape(mth.getParentClass().getFullName() + "." + mth.getMethodInfo().getShortId()));
+			dot.add("\" {");
+
+			if (useRegions) {
+				if (mth.getRegion() == null) {
+					return;
+				}
+				processMethodRegion(mth);
+			} else {
+				for (BlockNode block : mth.getBasicBlocks()) {
+					processBlock(mth, block, false);
+				}
+			}
+
+			dot.startLine("MethodNode[shape=record,label=\"{");
+			dot.add(escape(mth.getAccessFlags().makeString()));
+			dot.add(escape(mth.getReturnType() + " "
+					+ mth.getParentClass().getFullName() + "." + mth.getName()
+					+ "(" + Utils.listToString(mth.getArguments(true)) + ") "));
+
+			String attrs = attributesString(mth);
 			if (attrs.length() != 0) {
 				dot.add(" | ").add(attrs);
 			}
-			dot.add("\";");
-			dot.startLine("node [shape=record,color=blue];");
+			dot.add("}\"];");
 
-			for (IContainer c : r.getSubBlocks()) {
-				processRegion(mth, c);
-			}
+			dot.startLine("MethodNode -> ").add(makeName(mth.getEnterBlock())).add(';');
+
+			dot.add(conn.toString());
 
 			dot.startLine('}');
-		} else if (region instanceof BlockNode) {
-			processBlock(mth, (BlockNode) region);
+			dot.startLine();
+
+			String fileName = Utils.escape(mth.getMethodInfo().getShortId())
+					+ (useRegions ? ".regions" : "")
+					+ (rawInsn ? ".raw" : "")
+					+ ".dot";
+			dot.save(dir, mth.getParentClass().getClassInfo().getFullPath() + "_graphs", fileName);
 		}
-	}
 
-	private void processBlock(MethodNode mth, BlockNode block) {
-		processBlock(mth, block, false);
-	}
-
-	private void processBlock(MethodNode mth, BlockNode block, boolean error) {
-		String attrs = attributesString(block);
-		if (PRINT_REGISTERS_STATES) {
-			if (block.getStartState() != null) {
-				if (attrs.length() != 0) {
-					attrs += "|";
+		private void processMethodRegion(MethodNode mth) {
+			processRegion(mth, mth.getRegion());
+			for (ExceptionHandler h : mth.getExceptionHandlers()) {
+				if (h.getHandlerRegion() != null) {
+					processRegion(mth, h.getHandlerRegion());
+				}
+			}
+			Set<BlockNode> regionsBlocks = new HashSet<BlockNode>(mth.getBasicBlocks().size());
+			RegionUtils.getAllRegionBlocks(mth.getRegion(), regionsBlocks);
+			for (ExceptionHandler handler : mth.getExceptionHandlers()) {
+				IContainer handlerRegion = handler.getHandlerRegion();
+				if (handlerRegion != null) {
+					RegionUtils.getAllRegionBlocks(handlerRegion, regionsBlocks);
+				}
+			}
+			for (BlockNode block : mth.getBasicBlocks()) {
+				if (!regionsBlocks.contains(block)) {
+					processBlock(mth, block, true);
 				}
-				attrs += escape("RS: " + block.getStartState()) + NL;
-				attrs += escape("RE: " + block.getEndState()) + NL;
 			}
 		}
-		dot.startLine(makeName(block));
-		dot.add(" [shape=record,");
-		if (error) {
-			dot.add("color=red,");
-		}
-		dot.add("label=\"{");
-		dot.add(block.getId()).add("\\:\\ ");
-		dot.add(InsnUtils.formatOffset(block.getStartOffset()));
-		if (attrs.length() != 0) {
-			dot.add('|').add(attrs);
-		}
-		String insns = insertInsns(mth, block);
-		if (insns.length() != 0) {
-			dot.add('|').add(insns);
-		}
-		dot.add("}\"];");
 
-		BlockNode falsePath = null;
-		List<InsnNode> list = block.getInstructions();
-		if (!list.isEmpty() && list.get(0).getType() == InsnType.IF) {
-			falsePath = ((IfNode) list.get(0)).getElseBlock();
-		}
-		for (BlockNode next : block.getSuccessors()) {
-			conn.startLine(makeName(block)).add(" -> ").add(makeName(next));
-			if (next == falsePath) {
-				conn.add("[style=dotted]");
+		private void processRegion(MethodNode mth, IContainer region) {
+			if (region instanceof IRegion) {
+				IRegion r = (IRegion) region;
+				dot.startLine("subgraph " + makeName(region) + " {");
+				dot.startLine("label = \"").add(r);
+				String attrs = attributesString(r);
+				if (attrs.length() != 0) {
+					dot.add(" | ").add(attrs);
+				}
+				dot.add("\";");
+				dot.startLine("node [shape=record,color=blue];");
+
+				for (IContainer c : r.getSubBlocks()) {
+					processRegion(mth, c);
+				}
+
+				dot.startLine('}');
+			} else if (region instanceof BlockNode) {
+				processBlock(mth, (BlockNode) region, false);
 			}
-			conn.add(';');
 		}
-	}
 
-	private String attributesString(IAttributeNode block) {
-		StringBuilder attrs = new StringBuilder();
-		for (String attr : block.getAttributes().getAttributeStrings()) {
-			attrs.append(escape(attr)).append(NL);
-		}
-		return attrs.toString();
-	}
-
-	private static String makeName(IContainer c) {
-		String name;
-		if (c instanceof BlockNode) {
-			name = "Node_" + ((BlockNode) c).getId();
-		} else {
-			name = "cluster_" + c.getClass().getSimpleName() + "_" + c.hashCode();
-		}
-		return name;
-	}
-
-	private String insertInsns(MethodNode mth, BlockNode block) {
-		if (rawInsn) {
-			StringBuilder str = new StringBuilder();
-			for (InsnNode insn : block.getInstructions()) {
-				str.append(escape(insn + " " + insn.getAttributes()));
-				str.append(NL);
+		private void processBlock(MethodNode mth, BlockNode block, boolean error) {
+			String attrs = attributesString(block);
+			dot.startLine(makeName(block));
+			dot.add(" [shape=record,");
+			if (error) {
+				dot.add("color=red,");
 			}
-			return str.toString();
-		} else {
-			CodeWriter code = new CodeWriter(0);
-			MethodGen.addFallbackInsns(code, mth, block.getInstructions(), false);
-			String str = escape(code.newLine().toString());
-			if (str.startsWith(NL)) {
-				str = str.substring(NL.length());
+			dot.add("label=\"{");
+			dot.add(block.getId()).add("\\:\\ ");
+			dot.add(InsnUtils.formatOffset(block.getStartOffset()));
+			if (attrs.length() != 0) {
+				dot.add('|').add(attrs);
 			}
-			return str;
-		}
-	}
+			String insns = insertInsns(mth, block);
+			if (insns.length() != 0) {
+				dot.add('|').add(insns);
+			}
+			dot.add("}\"];");
 
-	private static String escape(String string) {
-		return string
-				.replace("\\", "") // TODO replace \"
-				.replace("/", "\\/")
-				.replace(">", "\\>").replace("<", "\\<")
-				.replace("{", "\\{").replace("}", "\\}")
-				.replace("\"", "\\\"")
-				.replace("-", "\\-")
-				.replace("|", "\\|")
-				.replace("\n", NL);
+			BlockNode falsePath = null;
+			List<InsnNode> list = block.getInstructions();
+			if (!list.isEmpty() && list.get(0).getType() == InsnType.IF) {
+				falsePath = ((IfNode) list.get(0)).getElseBlock();
+			}
+			for (BlockNode next : block.getSuccessors()) {
+				conn.startLine(makeName(block)).add(" -> ").add(makeName(next));
+				if (next == falsePath) {
+					conn.add("[style=dotted]");
+				}
+				conn.add(';');
+			}
+		}
+
+		private String attributesString(IAttributeNode block) {
+			StringBuilder attrs = new StringBuilder();
+			for (String attr : block.getAttributes().getAttributeStrings()) {
+				attrs.append(escape(attr)).append(NL);
+			}
+			return attrs.toString();
+		}
+
+		private String makeName(IContainer c) {
+			String name;
+			if (c instanceof BlockNode) {
+				name = "Node_" + ((BlockNode) c).getId();
+			} else {
+				name = "cluster_" + c.getClass().getSimpleName() + "_" + c.hashCode();
+			}
+			return name;
+		}
+
+		private String insertInsns(MethodNode mth, BlockNode block) {
+			if (rawInsn) {
+				StringBuilder str = new StringBuilder();
+				for (InsnNode insn : block.getInstructions()) {
+					str.append(escape(insn + " " + insn.getAttributes()));
+					str.append(NL);
+				}
+				return str.toString();
+			} else {
+				CodeWriter code = new CodeWriter(0);
+				MethodGen.addFallbackInsns(code, mth, block.getInstructions(), false);
+				String str = escape(code.newLine().toString());
+				if (str.startsWith(NL)) {
+					str = str.substring(NL.length());
+				}
+				return str;
+			}
+		}
+
+		private String escape(String string) {
+			return string
+					.replace("\\", "") // TODO replace \"
+					.replace("/", "\\/")
+					.replace(">", "\\>").replace("<", "\\<")
+					.replace("{", "\\{").replace("}", "\\}")
+					.replace("\"", "\\\"")
+					.replace("-", "\\-")
+					.replace("|", "\\|")
+					.replace("\n", NL);
+		}
 	}
 }