Refactoring: remove unused arg in InsnNode

src/main/java/jadx/dex/info/AccessInfo.java

@@ -165,4 +165,8 @@ public class AccessInfo {
 		return code.toString();
 	}
 
+	@Override
+	public String toString() {
+		return "AccessInfo: " + type + " " + accFlags + " (" + makeString() + ")";
+	}
 }

src/main/java/jadx/dex/info/MethodInfo.java

@@ -68,6 +68,10 @@ public final class MethodInfo {
 		return args;
 	}
 
+	public int getArgsCount() {
+		return args.size();
+	}
+
 	public boolean isConstructor() {
 		return name.equals("<init>");
 	}

src/main/java/jadx/dex/instructions/ArithNode.java

@@ -4,7 +4,6 @@ import jadx.dex.instructions.args.ArgType;
 import jadx.dex.instructions.args.InsnArg;
 import jadx.dex.instructions.args.RegisterArg;
 import jadx.dex.nodes.InsnNode;
-import jadx.dex.nodes.MethodNode;
 import jadx.utils.InsnUtils;
 
 import com.android.dx.io.instructions.DecodedInstruction;
@@ -13,9 +12,8 @@ public class ArithNode extends InsnNode {
 
 	private final ArithOp op;
 
-	public ArithNode(MethodNode mth, DecodedInstruction insn, ArithOp op, ArgType type,
-			boolean literal) {
-		super(mth, InsnType.ARITH, 2);
+	public ArithNode(DecodedInstruction insn, ArithOp op, ArgType type, boolean literal) {
+		super(InsnType.ARITH, 2);
 		this.op = op;
 		setResult(InsnArg.reg(insn, 0, type));
 
@@ -44,16 +42,16 @@ public class ArithNode extends InsnNode {
 		assert getArgsCount() == 2;
 	}
 
-	public ArithNode(MethodNode mth, ArithOp op, RegisterArg res, InsnArg a, InsnArg b) {
-		super(mth, InsnType.ARITH, 2);
+	public ArithNode(ArithOp op, RegisterArg res, InsnArg a, InsnArg b) {
+		super(InsnType.ARITH, 2);
 		setResult(res);
 		addArg(a);
 		addArg(b);
 		this.op = op;
 	}
 
-	public ArithNode(MethodNode mth, ArithOp op, RegisterArg res, InsnArg a) {
-		super(mth, InsnType.ARITH, 1);
+	public ArithNode(ArithOp op, RegisterArg res, InsnArg a) {
+		super(InsnType.ARITH, 1);
 		setResult(res);
 		addArg(a);
 		this.op = op;

src/main/java/jadx/dex/instructions/FillArrayOp.java

@@ -4,7 +4,6 @@ import jadx.dex.instructions.args.ArgType;
 import jadx.dex.instructions.args.InsnArg;
 import jadx.dex.instructions.args.PrimitiveType;
 import jadx.dex.nodes.InsnNode;
-import jadx.dex.nodes.MethodNode;
 
 import com.android.dx.io.instructions.FillArrayDataPayloadDecodedInstruction;
 
@@ -12,8 +11,8 @@ public class FillArrayOp extends InsnNode {
 
 	private final Object data;
 
-	public FillArrayOp(MethodNode method, int resReg, FillArrayDataPayloadDecodedInstruction payload) {
-		super(method, InsnType.FILL_ARRAY, 0);
+	public FillArrayOp(int resReg, FillArrayDataPayloadDecodedInstruction payload) {
+		super(InsnType.FILL_ARRAY, 0);
 
 		this.data = payload.getData();
 

src/main/java/jadx/dex/instructions/GotoNode.java

 package jadx.dex.instructions;
 
 import jadx.dex.nodes.InsnNode;
-import jadx.dex.nodes.MethodNode;
 import jadx.utils.InsnUtils;
 
 public class GotoNode extends InsnNode {
 
 	protected int target;
 
-	public GotoNode(MethodNode mth, int target) {
-		this(mth, InsnType.GOTO, target);
+	public GotoNode(int target) {
+		this(InsnType.GOTO, target);
 	}
 
-	protected GotoNode(MethodNode mth, InsnType type, int target) {
-		super(mth, type);
+	protected GotoNode(InsnType type, int target) {
+		super(type);
 		this.target = target;
 	}
 

src/main/java/jadx/dex/instructions/IfNode.java

@@ -4,7 +4,6 @@ import jadx.dex.instructions.args.ArgType;
 import jadx.dex.instructions.args.InsnArg;
 import jadx.dex.instructions.args.LiteralArg;
 import jadx.dex.instructions.args.PrimitiveType;
-import jadx.dex.nodes.MethodNode;
 import jadx.utils.InsnUtils;
 
 import com.android.dx.io.instructions.DecodedInstruction;
@@ -14,8 +13,8 @@ public class IfNode extends GotoNode {
 	protected boolean zeroCmp;
 	protected IfOp op;
 
-	public IfNode(MethodNode mth, IfOp op, int targ, InsnArg then, InsnArg els) {
-		super(mth, InsnType.IF, targ);
+	public IfNode(IfOp op, int targ, InsnArg then, InsnArg els) {
+		super(InsnType.IF, targ);
 		addArg(then);
 		if (els == null) {
 			zeroCmp = true;
@@ -25,8 +24,8 @@ public class IfNode extends GotoNode {
 		}
 	}
 
-	public IfNode(MethodNode mth, DecodedInstruction insn, IfOp op) {
-		super(mth, InsnType.IF, insn.getTarget());
+	public IfNode(DecodedInstruction insn, IfOp op) {
+		super(InsnType.IF, insn.getTarget());
 		this.op = op;
 
 		ArgType type = ArgType.unknown(

src/main/java/jadx/dex/instructions/IndexInsnNode.java

 package jadx.dex.instructions;
 
 import jadx.dex.nodes.InsnNode;
-import jadx.dex.nodes.MethodNode;
 import jadx.utils.InsnUtils;
 
 public class IndexInsnNode extends InsnNode {
 
 	protected final Object index;
 
-	public IndexInsnNode(MethodNode mth, InsnType type, Object index, int argCount) {
-		super(mth, type, argCount);
+	public IndexInsnNode(InsnType type, Object index, int argCount) {
+		super(type, argCount);
 		this.index = index;
 	}
 

src/main/java/jadx/dex/instructions/InsnDecoder.java

 package jadx.dex.instructions;
 
 import jadx.dex.info.FieldInfo;
+import jadx.dex.info.MethodInfo;
 import jadx.dex.instructions.args.ArgType;
 import jadx.dex.instructions.args.InsnArg;
 import jadx.dex.instructions.args.PrimitiveType;
@@ -76,7 +77,7 @@ public class InsnDecoder {
 			case Opcodes.MOVE_RESULT:
 			case Opcodes.MOVE_RESULT_WIDE:
 			case Opcodes.MOVE_RESULT_OBJECT:
-				return new InsnNode(method, InsnType.NOP, 0);
+				return new InsnNode(InsnType.NOP, 0);
 
 			case Opcodes.CONST:
 			case Opcodes.CONST_4:
@@ -94,13 +95,13 @@ public class InsnDecoder {
 
 			case Opcodes.CONST_STRING:
 			case Opcodes.CONST_STRING_JUMBO: {
-				InsnNode node = new IndexInsnNode(method, InsnType.CONST, dex.getString(insn.getIndex()), 0);
+				InsnNode node = new IndexInsnNode(InsnType.CONST, dex.getString(insn.getIndex()), 0);
 				node.setResult(InsnArg.reg(insn, 0, ArgType.STRING));
 				return node;
 			}
 
 			case Opcodes.CONST_CLASS: {
-				InsnNode node = new IndexInsnNode(method, InsnType.CONST, dex.getType(insn.getIndex()), 0);
+				InsnNode node = new IndexInsnNode(InsnType.CONST, dex.getType(insn.getIndex()), 0);
 				node.setResult(InsnArg.reg(insn, 0, ArgType.CLASS));
 				return node;
 			}
@@ -151,13 +152,13 @@ public class InsnDecoder {
 				return arith(insn, ArithOp.SUB, ArgType.INT);
 
 			case Opcodes.RSUB_INT:
-				return new ArithNode(method, ArithOp.SUB,
+				return new ArithNode(ArithOp.SUB,
 						InsnArg.reg(insn, 0, ArgType.INT),
 						InsnArg.reg(insn, 2, ArgType.INT),
 						InsnArg.reg(insn, 1, ArgType.INT));
 
 			case Opcodes.RSUB_INT_LIT8:
-				return new ArithNode(method, ArithOp.SUB,
+				return new ArithNode(ArithOp.SUB,
 						InsnArg.reg(insn, 0, ArgType.INT),
 						InsnArg.lit(insn, ArgType.INT),
 						InsnArg.reg(insn, 1, ArgType.INT));
@@ -346,27 +347,27 @@ public class InsnDecoder {
 
 			case Opcodes.IF_EQ:
 			case Opcodes.IF_EQZ:
-				return new IfNode(method, insn, IfOp.EQ);
+				return new IfNode(insn, IfOp.EQ);
 
 			case Opcodes.IF_NE:
 			case Opcodes.IF_NEZ:
-				return new IfNode(method, insn, IfOp.NE);
+				return new IfNode(insn, IfOp.NE);
 
 			case Opcodes.IF_GT:
 			case Opcodes.IF_GTZ:
-				return new IfNode(method, insn, IfOp.GT);
+				return new IfNode(insn, IfOp.GT);
 
 			case Opcodes.IF_GE:
 			case Opcodes.IF_GEZ:
-				return new IfNode(method, insn, IfOp.GE);
+				return new IfNode(insn, IfOp.GE);
 
 			case Opcodes.IF_LT:
 			case Opcodes.IF_LTZ:
-				return new IfNode(method, insn, IfOp.LT);
+				return new IfNode(insn, IfOp.LT);
 
 			case Opcodes.IF_LE:
 			case Opcodes.IF_LEZ:
-				return new IfNode(method, insn, IfOp.LE);
+				return new IfNode(insn, IfOp.LE);
 
 			case Opcodes.CMP_LONG:
 				return cmp(insn, InsnType.CMP_L, ArgType.LONG);
@@ -383,7 +384,7 @@ public class InsnDecoder {
 			case Opcodes.GOTO:
 			case Opcodes.GOTO_16:
 			case Opcodes.GOTO_32:
-				return new GotoNode(method, insn.getTarget());
+				return new GotoNode(insn.getTarget());
 
 			case Opcodes.THROW:
 				return insn(InsnType.THROW, null,
@@ -394,7 +395,7 @@ public class InsnDecoder {
 						InsnArg.reg(insn, 0, ArgType.unknown(PrimitiveType.OBJECT)));
 
 			case Opcodes.RETURN_VOID:
-				return new InsnNode(method, InsnType.RETURN, 0);
+				return new InsnNode(InsnType.RETURN, 0);
 
 			case Opcodes.RETURN:
 			case Opcodes.RETURN_WIDE:
@@ -404,7 +405,7 @@ public class InsnDecoder {
 						InsnArg.reg(insn, 0, method.getReturnType()));
 
 			case Opcodes.INSTANCE_OF: {
-				InsnNode node = new IndexInsnNode(method, InsnType.INSTANCE_OF, dex.getType(insn.getIndex()), 1);
+				InsnNode node = new IndexInsnNode(InsnType.INSTANCE_OF, dex.getType(insn.getIndex()), 1);
 				node.setResult(InsnArg.reg(insn, 0, ArgType.BOOLEAN));
 				node.addArg(InsnArg.reg(insn, 1, ArgType.UNKNOWN_OBJECT));
 				return node;
@@ -412,7 +413,7 @@ public class InsnDecoder {
 
 			case Opcodes.CHECK_CAST: {
 				ArgType castType = dex.getType(insn.getIndex());
-				InsnNode node = new IndexInsnNode(method, InsnType.CHECK_CAST, castType, 1);
+				InsnNode node = new IndexInsnNode(InsnType.CHECK_CAST, castType, 1);
 				node.setResult(InsnArg.reg(insn, 0, castType));
 				node.addArg(InsnArg.reg(insn, 0, ArgType.UNKNOWN_OBJECT));
 				return node;
@@ -426,7 +427,7 @@ public class InsnDecoder {
 			case Opcodes.IGET_WIDE:
 			case Opcodes.IGET_OBJECT: {
 				FieldInfo field = FieldInfo.fromDex(dex, insn.getIndex());
-				InsnNode node = new IndexInsnNode(method, InsnType.IGET, field, 1);
+				InsnNode node = new IndexInsnNode(InsnType.IGET, field, 1);
 				node.setResult(InsnArg.reg(insn, 0, field.getType()));
 				node.addArg(InsnArg.reg(insn, 1, field.getDeclClass().getType()));
 				return node;
@@ -440,7 +441,7 @@ public class InsnDecoder {
 			case Opcodes.IPUT_WIDE:
 			case Opcodes.IPUT_OBJECT: {
 				FieldInfo field = FieldInfo.fromDex(dex, insn.getIndex());
-				InsnNode node = new IndexInsnNode(method, InsnType.IPUT, field, 2);
+				InsnNode node = new IndexInsnNode(InsnType.IPUT, field, 2);
 				node.addArg(InsnArg.reg(insn, 0, field.getType()));
 				node.addArg(InsnArg.reg(insn, 1, field.getDeclClass().getType()));
 				return node;
@@ -454,7 +455,7 @@ public class InsnDecoder {
 			case Opcodes.SGET_WIDE:
 			case Opcodes.SGET_OBJECT: {
 				FieldInfo field = FieldInfo.fromDex(dex, insn.getIndex());
-				InsnNode node = new IndexInsnNode(method, InsnType.SGET, field, 0);
+				InsnNode node = new IndexInsnNode(InsnType.SGET, field, 0);
 				node.setResult(InsnArg.reg(insn, 0, field.getType()));
 				return node;
 			}
@@ -467,13 +468,13 @@ public class InsnDecoder {
 			case Opcodes.SPUT_WIDE:
 			case Opcodes.SPUT_OBJECT: {
 				FieldInfo field = FieldInfo.fromDex(dex, insn.getIndex());
-				InsnNode node = new IndexInsnNode(method, InsnType.SPUT, field, 1);
+				InsnNode node = new IndexInsnNode(InsnType.SPUT, field, 1);
 				node.addArg(InsnArg.reg(insn, 0, field.getType()));
 				return node;
 			}
 
 			case Opcodes.ARRAY_LENGTH: {
-				InsnNode node = new InsnNode(method, InsnType.ARRAY_LENGTH, 1);
+				InsnNode node = new InsnNode(InsnType.ARRAY_LENGTH, 1);
 				node.setResult(InsnArg.reg(insn, 0, ArgType.INT));
 				node.addArg(InsnArg.reg(insn, 1, ArgType.unknown(PrimitiveType.ARRAY)));
 				return node;
@@ -592,13 +593,12 @@ public class InsnDecoder {
 			targets[i] = targets[i] - payloadOffset + offset;
 		}
 		int nextOffset = getNextInsnOffset(insnArr, offset);
-		return new SwitchNode(method, InsnArg.reg(insn, 0, ArgType.NARROW),
-				keys, targets, nextOffset);
+		return new SwitchNode(InsnArg.reg(insn, 0, ArgType.NARROW), keys, targets, nextOffset);
 	}
 
 	private InsnNode fillArray(DecodedInstruction insn) {
 		DecodedInstruction payload = insnArr[insn.getTarget()];
-		return new FillArrayOp(method, insn.getA(), (FillArrayDataPayloadDecodedInstruction) payload);
+		return new FillArrayOp(insn.getA(), (FillArrayDataPayloadDecodedInstruction) payload);
 	}
 
 	private InsnNode filledNewArray(DecodedInstruction insn, int offset, boolean isRange) {
@@ -622,7 +622,7 @@ public class InsnDecoder {
 	}
 
 	private InsnNode cmp(DecodedInstruction insn, InsnType itype, ArgType argType) {
-		InsnNode inode = new InsnNode(method, itype, 2);
+		InsnNode inode = new InsnNode(itype, 2);
 		inode.setResult(InsnArg.reg(insn, 0, ArgType.INT));
 		inode.addArg(InsnArg.reg(insn, 1, argType));
 		inode.addArg(InsnArg.reg(insn, 2, argType));
@@ -630,7 +630,7 @@ public class InsnDecoder {
 	}
 
 	private InsnNode cast(DecodedInstruction insn, ArgType from, ArgType to) {
-		InsnNode inode = new IndexInsnNode(method, InsnType.CAST, to, 1);
+		InsnNode inode = new IndexInsnNode(InsnType.CAST, to, 1);
 		inode.setResult(InsnArg.reg(insn, 0, to));
 		inode.addArg(InsnArg.reg(insn, 1, from));
 		return inode;
@@ -638,11 +638,12 @@ public class InsnDecoder {
 
 	private InsnNode invoke(DecodedInstruction insn, int offset, InvokeType type, boolean isRange) {
 		int resReg = getMoveResultRegister(insnArr, offset);
-		return new InvokeNode(method, insn, type, isRange, resReg);
+		MethodInfo mth = MethodInfo.fromDex(dex, insn.getIndex());
+		return new InvokeNode(mth, insn, type, isRange, resReg);
 	}
 
 	private InsnNode arrayGet(DecodedInstruction insn, ArgType argType) {
-		InsnNode inode = new InsnNode(method, InsnType.AGET, 2);
+		InsnNode inode = new InsnNode(InsnType.AGET, 2);
 		inode.setResult(InsnArg.reg(insn, 0, argType));
 		inode.addArg(InsnArg.reg(insn, 1, ArgType.unknown(PrimitiveType.ARRAY)));
 		inode.addArg(InsnArg.reg(insn, 2, ArgType.INT));
@@ -650,7 +651,7 @@ public class InsnDecoder {
 	}
 
 	private InsnNode arrayPut(DecodedInstruction insn, ArgType argType) {
-		InsnNode inode = new InsnNode(method, InsnType.APUT, 3);
+		InsnNode inode = new InsnNode(InsnType.APUT, 3);
 		inode.addArg(InsnArg.reg(insn, 1, ArgType.unknown(PrimitiveType.ARRAY)));
 		inode.addArg(InsnArg.reg(insn, 2, ArgType.INT));
 		inode.addArg(InsnArg.reg(insn, 0, argType));
@@ -658,22 +659,22 @@ public class InsnDecoder {
 	}
 
 	private InsnNode arith(DecodedInstruction insn, ArithOp op, ArgType type) {
-		return new ArithNode(method, insn, op, type, false);
+		return new ArithNode(insn, op, type, false);
 	}
 
 	private InsnNode arith_lit(DecodedInstruction insn, ArithOp op, ArgType type) {
-		return new ArithNode(method, insn, op, type, true);
+		return new ArithNode(insn, op, type, true);
 	}
 
 	private InsnNode neg(DecodedInstruction insn, ArgType type) {
-		InsnNode inode = new InsnNode(method, InsnType.NEG, 1);
+		InsnNode inode = new InsnNode(InsnType.NEG, 1);
 		inode.setResult(InsnArg.reg(insn, 0, type));
 		inode.addArg(InsnArg.reg(insn, 1, type));
 		return inode;
 	}
 
 	private InsnNode insn(InsnType type, RegisterArg res, InsnArg... args) {
-		InsnNode inode = new InsnNode(method, type, args == null ? 0 : args.length);
+		InsnNode inode = new InsnNode(type, args == null ? 0 : args.length);
 		inode.setResult(res);
 		if (args != null)
 			for (InsnArg arg : args)

src/main/java/jadx/dex/instructions/InvokeNode.java

@@ -4,7 +4,6 @@ import jadx.dex.info.MethodInfo;
 import jadx.dex.instructions.args.ArgType;
 import jadx.dex.instructions.args.InsnArg;
 import jadx.dex.nodes.InsnNode;
-import jadx.dex.nodes.MethodNode;
 import jadx.utils.InsnUtils;
 import jadx.utils.Utils;
 
@@ -15,10 +14,9 @@ public class InvokeNode extends InsnNode {
 	private final InvokeType type;
 	private final MethodInfo mth;
 
-	public InvokeNode(MethodNode method, DecodedInstruction insn, InvokeType type, boolean isRange,
-			int resReg) {
-		super(method, InsnType.INVOKE);
-		this.mth = MethodInfo.fromDex(method.dex(), insn.getIndex());
+	public InvokeNode(MethodInfo mth, DecodedInstruction insn, InvokeType type, boolean isRange, int resReg) {
+		super(InsnType.INVOKE, mth.getArgsCount() + (type != InvokeType.STATIC ? 1 : 0));
+		this.mth = mth;
 		this.type = type;
 
 		if (resReg >= 0)

src/main/java/jadx/dex/instructions/SwitchNode.java

@@ -2,7 +2,6 @@ package jadx.dex.instructions;
 
 import jadx.dex.instructions.args.InsnArg;
 import jadx.dex.nodes.InsnNode;
-import jadx.dex.nodes.MethodNode;
 import jadx.utils.InsnUtils;
 
 import java.util.Arrays;
@@ -13,8 +12,8 @@ public class SwitchNode extends InsnNode {
 	private final int[] targets;
 	private final int def; // next instruction
 
-	public SwitchNode(MethodNode mth, InsnArg arg, int[] keys, int[] targets, int def) {
-		super(mth, InsnType.SWITCH, 1);
+	public SwitchNode(InsnArg arg, int[] keys, int[] targets, int def) {
+		super(InsnType.SWITCH, 1);
 		this.keys = keys;
 		this.targets = targets;
 		this.def = def;

src/main/java/jadx/dex/instructions/mods/ConstructorInsn.java

@@ -22,7 +22,7 @@ public class ConstructorInsn extends InsnNode {
 	private final CallType callType;
 
 	public ConstructorInsn(MethodNode mth, InvokeNode invoke) {
-		super(mth, InsnType.CONSTRUCTOR, invoke.getArgsCount() - 1);
+		super(InsnType.CONSTRUCTOR, invoke.getArgsCount() - 1);
 		this.callMth = invoke.getCallMth();
 		ClassInfo classType = callMth.getDeclClass();
 

src/main/java/jadx/dex/instructions/mods/TernaryInsn.java

@@ -5,14 +5,13 @@ import jadx.dex.instructions.IfOp;
 import jadx.dex.instructions.InsnType;
 import jadx.dex.instructions.args.InsnArg;
 import jadx.dex.nodes.InsnNode;
-import jadx.dex.nodes.MethodNode;
 import jadx.utils.InsnUtils;
 import jadx.utils.Utils;
 
 public class TernaryInsn extends IfNode {
 
-	public TernaryInsn(MethodNode mth, IfOp op, InsnNode then, InsnNode els) {
-		super(mth, op, then.getOffset(),
+	public TernaryInsn(IfOp op, InsnNode then, InsnNode els) {
+		super(op, then.getOffset(),
 				InsnArg.wrap(then),
 				els == null ? null : InsnArg.wrap(els));
 	}

src/main/java/jadx/dex/nodes/InsnNode.java

@@ -24,11 +24,11 @@ public class InsnNode extends AttrNode {
 	protected int offset;
 	protected int insnHashCode = super.hashCode();
 
-	protected InsnNode(MethodNode mth, InsnType type) {
-		this(mth, type, 3);
+	protected InsnNode(InsnType type) {
+		this(type, 1);
 	}
 
-	public InsnNode(MethodNode mth, InsnType type, int argsCount) {
+	public InsnNode(InsnType type, int argsCount) {
 		this.insnType = type;
 		this.offset = -1;
 
@@ -85,11 +85,15 @@ public class InsnNode extends AttrNode {
 	public boolean replaceArg(InsnArg from, InsnArg to) {
 		int count = getArgsCount();
 		for (int i = 0; i < count; i++) {
-			if (arguments.get(i) == from) {
+			InsnArg arg = arguments.get(i);
+			if (arg == from) {
 				// TODO correct remove from use list
 				// from.getTypedVar().getUseList().remove(from);
 				setArg(i, to);
 				return true;
+			} else if (arg.isInsnWrap()) {
+				if (((InsnWrapArg) arg).getWrapInsn().replaceArg(from, to))
+					return true;
 			}
 		}
 		return false;

src/main/java/jadx/dex/visitors/BlockMakerVisitor.java

@@ -358,7 +358,7 @@ public class BlockMakerVisitor extends AbstractVisitor {
 					// make copy of return block and connect to predecessor
 					BlockNode newRetBlock = startNewBlock(mth, origRetBlock.getStartOffset());
 
-					InsnNode ret = new InsnNode(mth, InsnType.RETURN, 1);
+					InsnNode ret = new InsnNode(InsnType.RETURN, 1);
 					if (retArg != null)
 						ret.addArg(InsnArg.reg(retArg.getRegNum(), retArg.getType()));
 					ret.getAttributes().addAll(origReturnInsn.getAttributes());

src/main/java/jadx/dex/visitors/CodeShrinker.java

@@ -57,8 +57,12 @@ public class CodeShrinker extends AbstractVisitor {
 							LOG.debug("parent insn null in " + useInsnArg + " from " + insn + " mth: " + mth);
 						} else if (useInsn != insn) {
 							boolean wrap = false;
-							// wrap insn from current block
+							// TODO don't reorder methods invocations
+							// if (insn.getResult().getTypedVar().getName() != null) {
+							// wrap = false;
+							// } else
 							if (BlockUtils.blockContains(block, useInsn)) {
+								// wrap insn from current block
 								wrap = true;
 							} else {
 								// TODO implement rules for shrink insn from different blocks
@@ -129,14 +133,14 @@ public class CodeShrinker extends AbstractVisitor {
 									// use 'a++' instead 'a = a + 1' (similar for minus)
 									boolean inc = ((op == ArithOp.ADD && lit == 1)
 											|| (op == ArithOp.SUB && lit == -1));
-									return new ArithNode(mth, inc ? ArithOp.INC : ArithOp.DEC, null, v0);
+									return new ArithNode(inc ? ArithOp.INC : ArithOp.DEC, null, v0);
 								}
 							}
 						}
 
 						// fix 'c + (-1)' => 'c - (1)'
 						if (invert) {
-							return new ArithNode(mth, ArithOp.SUB,
+							return new ArithNode(ArithOp.SUB,
 									arith.getResult(), insn.getArg(0),
 									InsnArg.lit(-lit, litArg.getType()));
 						}

src/main/java/jadx/dex/visitors/ModVisitor.java

@@ -82,7 +82,8 @@ public class ModVisitor extends AbstractVisitor {
 									replaceInsn(block, i, co);
 								}
 							} else if (co.isThis() && co.getArgsCount() == 0) {
-								MethodNode defCo = mth.getParentClass().searchMethodById(co.getCallMth().getShortId());
+								MethodNode defCo = mth.getParentClass()
+										.searchMethodByName(co.getCallMth().getShortId());
 								if (defCo == null || defCo.isNoCode()) {
 									// default constructor not implemented
 									remover.add(insn);
@@ -101,7 +102,7 @@ public class ModVisitor extends AbstractVisitor {
 							IndexInsnNode node = (IndexInsnNode) insn;
 							FieldNode f = mth.getParentClass().getConstFields().get(node.getIndex());
 							if (f != null) {
-								InsnNode inode = new IndexInsnNode(mth, InsnType.SGET, f, 0);
+								InsnNode inode = new IndexInsnNode(InsnType.SGET, f, 0);
 								inode.setResult(insn.getResult());
 								replaceInsn(block, i, inode);
 							}