diff --git a/asm/src/main/java/dev/openrs2/asm/InsnNodeUtils.java b/asm/src/main/java/dev/openrs2/asm/InsnNodeUtils.java
index e6ddd1f5..0712370d 100644
--- a/asm/src/main/java/dev/openrs2/asm/InsnNodeUtils.java
+++ b/asm/src/main/java/dev/openrs2/asm/InsnNodeUtils.java
@@ -320,7 +320,7 @@ public final class InsnNodeUtils {
 		var height = 0;
 		var insn = last;
 		do {
-			var metadata = StackMetadata.get(insn);
+			var metadata = StackMetadataKt.stackMetadata(insn);
 			if (insn != last) {
 				deadInsns.add(insn);
 				height -= metadata.getPushes();
diff --git a/asm/src/main/java/dev/openrs2/asm/StackMetadata.java b/asm/src/main/java/dev/openrs2/asm/StackMetadata.java
deleted file mode 100644
index 12e5e1e0..00000000
--- a/asm/src/main/java/dev/openrs2/asm/StackMetadata.java
+++ /dev/null
@@ -1,353 +0,0 @@
-package dev.openrs2.asm;
-
-import org.objectweb.asm.Opcodes;
-import org.objectweb.asm.Type;
-import org.objectweb.asm.tree.AbstractInsnNode;
-import org.objectweb.asm.tree.FieldInsnNode;
-import org.objectweb.asm.tree.LdcInsnNode;
-import org.objectweb.asm.tree.MethodInsnNode;
-import org.objectweb.asm.tree.MultiANewArrayInsnNode;
-
-public final class StackMetadata {
-	private static final StackMetadata NONE = new StackMetadata(0, 0);
-	private static final StackMetadata POP1 = new StackMetadata(1, 0);
-	private static final StackMetadata POP1_PUSH1 = new StackMetadata(1, 1);
-	private static final StackMetadata POP1_PUSH2 = new StackMetadata(1, 2);
-	private static final StackMetadata POP2 = new StackMetadata(2, 0);
-	private static final StackMetadata POP2_PUSH1 = new StackMetadata(2, 1);
-	private static final StackMetadata POP2_PUSH2 = new StackMetadata(2, 2);
-	private static final StackMetadata POP2_PUSH3 = new StackMetadata(2, 3);
-	private static final StackMetadata POP2_PUSH4 = new StackMetadata(2, 4);
-	private static final StackMetadata POP3 = new StackMetadata(3, 0);
-	private static final StackMetadata POP3_PUSH2 = new StackMetadata(3, 2);
-	private static final StackMetadata POP3_PUSH4 = new StackMetadata(3, 4);
-	private static final StackMetadata POP3_PUSH5 = new StackMetadata(3, 5);
-	private static final StackMetadata POP4 = new StackMetadata(4, 0);
-	private static final StackMetadata POP4_PUSH1 = new StackMetadata(4, 1);
-	private static final StackMetadata POP4_PUSH2 = new StackMetadata(4, 2);
-	private static final StackMetadata POP4_PUSH6 = new StackMetadata(4, 6);
-	private static final StackMetadata PUSH1 = new StackMetadata(0, 1);
-	private static final StackMetadata PUSH2 = new StackMetadata(0, 2);
-
-	public static StackMetadata get(AbstractInsnNode insn) {
-		var opcode = insn.getOpcode();
-		switch (opcode) {
-		case -1:
-		case Opcodes.NOP:
-			return NONE;
-		case Opcodes.ACONST_NULL:
-		case Opcodes.ICONST_M1:
-		case Opcodes.ICONST_0:
-		case Opcodes.ICONST_1:
-		case Opcodes.ICONST_2:
-		case Opcodes.ICONST_3:
-		case Opcodes.ICONST_4:
-		case Opcodes.ICONST_5:
-			return PUSH1;
-		case Opcodes.LCONST_0:
-		case Opcodes.LCONST_1:
-			return PUSH2;
-		case Opcodes.FCONST_0:
-		case Opcodes.FCONST_1:
-		case Opcodes.FCONST_2:
-			return PUSH1;
-		case Opcodes.DCONST_0:
-		case Opcodes.DCONST_1:
-			return PUSH2;
-		case Opcodes.BIPUSH:
-		case Opcodes.SIPUSH:
-			return PUSH1;
-		case Opcodes.LDC:
-			var cst = ((LdcInsnNode) insn).cst;
-			if (cst instanceof Double || cst instanceof Long) {
-				return PUSH2;
-			} else {
-				return PUSH1;
-			}
-		case Opcodes.ILOAD:
-			return PUSH1;
-		case Opcodes.LLOAD:
-			return PUSH2;
-		case Opcodes.FLOAD:
-			return PUSH1;
-		case Opcodes.DLOAD:
-			return PUSH2;
-		case Opcodes.ALOAD:
-			return PUSH1;
-		case Opcodes.IALOAD:
-			return POP2_PUSH1;
-		case Opcodes.LALOAD:
-			return POP2_PUSH2;
-		case Opcodes.FALOAD:
-			return POP2_PUSH1;
-		case Opcodes.DALOAD:
-			return POP2_PUSH2;
-		case Opcodes.AALOAD:
-		case Opcodes.BALOAD:
-		case Opcodes.CALOAD:
-		case Opcodes.SALOAD:
-			return POP2_PUSH1;
-		case Opcodes.ISTORE:
-			return POP1;
-		case Opcodes.LSTORE:
-			return POP2;
-		case Opcodes.FSTORE:
-			return POP1;
-		case Opcodes.DSTORE:
-			return POP2;
-		case Opcodes.ASTORE:
-			return POP1;
-		case Opcodes.IASTORE:
-			return POP3;
-		case Opcodes.LASTORE:
-			return POP4;
-		case Opcodes.FASTORE:
-			return POP3;
-		case Opcodes.DASTORE:
-			return POP4;
-		case Opcodes.AASTORE:
-		case Opcodes.BASTORE:
-		case Opcodes.CASTORE:
-		case Opcodes.SASTORE:
-			return POP3;
-		case Opcodes.POP:
-			return POP1;
-		case Opcodes.POP2:
-			return POP2;
-		case Opcodes.DUP:
-			return POP1_PUSH2;
-		case Opcodes.DUP_X1:
-			return POP2_PUSH3;
-		case Opcodes.DUP_X2:
-			return POP3_PUSH4;
-		case Opcodes.DUP2:
-			return POP2_PUSH4;
-		case Opcodes.DUP2_X1:
-			return POP3_PUSH5;
-		case Opcodes.DUP2_X2:
-			return POP4_PUSH6;
-		case Opcodes.SWAP:
-			return POP2_PUSH2;
-		case Opcodes.IADD:
-			return POP2_PUSH1;
-		case Opcodes.LADD:
-			return POP4_PUSH2;
-		case Opcodes.FADD:
-			return POP2_PUSH1;
-		case Opcodes.DADD:
-			return POP4_PUSH2;
-		case Opcodes.ISUB:
-			return POP2_PUSH1;
-		case Opcodes.LSUB:
-			return POP4_PUSH2;
-		case Opcodes.FSUB:
-			return POP2_PUSH1;
-		case Opcodes.DSUB:
-			return POP4_PUSH2;
-		case Opcodes.IMUL:
-			return POP2_PUSH1;
-		case Opcodes.LMUL:
-			return POP4_PUSH2;
-		case Opcodes.FMUL:
-			return POP2_PUSH1;
-		case Opcodes.DMUL:
-			return POP4_PUSH2;
-		case Opcodes.IDIV:
-			return POP2_PUSH1;
-		case Opcodes.LDIV:
-			return POP4_PUSH2;
-		case Opcodes.FDIV:
-			return POP2_PUSH1;
-		case Opcodes.DDIV:
-			return POP4_PUSH2;
-		case Opcodes.IREM:
-			return POP2_PUSH1;
-		case Opcodes.LREM:
-			return POP4_PUSH2;
-		case Opcodes.FREM:
-			return POP2_PUSH1;
-		case Opcodes.DREM:
-			return POP4_PUSH2;
-		case Opcodes.INEG:
-			return POP1_PUSH1;
-		case Opcodes.LNEG:
-			return POP2_PUSH2;
-		case Opcodes.FNEG:
-			return POP1_PUSH1;
-		case Opcodes.DNEG:
-			return POP2_PUSH2;
-		case Opcodes.ISHL:
-			return POP2_PUSH1;
-		case Opcodes.LSHL:
-			return POP3_PUSH2;
-		case Opcodes.ISHR:
-			return POP2_PUSH1;
-		case Opcodes.LSHR:
-			return POP3_PUSH2;
-		case Opcodes.IUSHR:
-			return POP2_PUSH1;
-		case Opcodes.LUSHR:
-			return POP3_PUSH2;
-		case Opcodes.IAND:
-			return POP2_PUSH1;
-		case Opcodes.LAND:
-			return POP4_PUSH2;
-		case Opcodes.IOR:
-			return POP2_PUSH1;
-		case Opcodes.LOR:
-			return POP4_PUSH2;
-		case Opcodes.IXOR:
-			return POP2_PUSH1;
-		case Opcodes.LXOR:
-			return POP4_PUSH2;
-		case Opcodes.IINC:
-			return NONE;
-		case Opcodes.I2L:
-			return POP1_PUSH2;
-		case Opcodes.I2F:
-			return POP1_PUSH1;
-		case Opcodes.I2D:
-			return POP1_PUSH2;
-		case Opcodes.L2I:
-			return POP2_PUSH1;
-		case Opcodes.L2F:
-			return POP2_PUSH1;
-		case Opcodes.L2D:
-			return POP2_PUSH2;
-		case Opcodes.F2I:
-			return POP1_PUSH1;
-		case Opcodes.F2L:
-			return POP1_PUSH2;
-		case Opcodes.F2D:
-			return POP1_PUSH2;
-		case Opcodes.D2I:
-			return POP2_PUSH1;
-		case Opcodes.D2L:
-			return POP2_PUSH2;
-		case Opcodes.D2F:
-			return POP2_PUSH1;
-		case Opcodes.I2B:
-		case Opcodes.I2C:
-		case Opcodes.I2S:
-			return POP1_PUSH1;
-		case Opcodes.LCMP:
-			return POP4_PUSH1;
-		case Opcodes.FCMPL:
-		case Opcodes.FCMPG:
-			return POP2_PUSH1;
-		case Opcodes.DCMPL:
-		case Opcodes.DCMPG:
-			return POP4_PUSH1;
-		case Opcodes.IFEQ:
-		case Opcodes.IFNE:
-		case Opcodes.IFLT:
-		case Opcodes.IFGE:
-		case Opcodes.IFGT:
-		case Opcodes.IFLE:
-			return POP1;
-		case Opcodes.IF_ICMPEQ:
-		case Opcodes.IF_ICMPNE:
-		case Opcodes.IF_ICMPLT:
-		case Opcodes.IF_ICMPGE:
-		case Opcodes.IF_ICMPGT:
-		case Opcodes.IF_ICMPLE:
-		case Opcodes.IF_ACMPEQ:
-		case Opcodes.IF_ACMPNE:
-			return POP2;
-		case Opcodes.GOTO:
-			return NONE;
-		case Opcodes.JSR:
-			return PUSH1;
-		case Opcodes.RET:
-			return NONE;
-		case Opcodes.TABLESWITCH:
-		case Opcodes.LOOKUPSWITCH:
-			return POP1;
-		case Opcodes.IRETURN:
-			return POP1;
-		case Opcodes.LRETURN:
-			return POP2;
-		case Opcodes.FRETURN:
-			return POP1;
-		case Opcodes.DRETURN:
-			return POP2;
-		case Opcodes.ARETURN:
-			return POP1;
-		case Opcodes.RETURN:
-			return NONE;
-		case Opcodes.GETSTATIC:
-		case Opcodes.PUTSTATIC:
-		case Opcodes.GETFIELD:
-		case Opcodes.PUTFIELD:
-			var fieldInsn = (FieldInsnNode) insn;
-			var fieldSize = Type.getType(fieldInsn.desc).getSize();
-
-			int pushes = 0, pops = 0;
-
-			if (opcode == Opcodes.GETFIELD || opcode == Opcodes.PUTFIELD) {
-				pops++;
-			}
-
-			if (opcode == Opcodes.PUTFIELD || opcode == Opcodes.PUTSTATIC) {
-				pushes += fieldSize;
-			} else {
-				pops += fieldSize;
-			}
-
-			return new StackMetadata(pops, pushes);
-		case Opcodes.INVOKEVIRTUAL:
-		case Opcodes.INVOKESPECIAL:
-		case Opcodes.INVOKESTATIC:
-		case Opcodes.INVOKEINTERFACE:
-			var methodInsn = (MethodInsnNode) insn;
-			var argumentsAndReturnSizes = Type.getArgumentsAndReturnSizes(methodInsn.desc);
-
-			pushes = argumentsAndReturnSizes >> 2;
-			pops = argumentsAndReturnSizes & 0x3;
-
-			if (opcode != Opcodes.INVOKESTATIC) {
-				pops++;
-			}
-
-			return new StackMetadata(pops, pushes);
-		case Opcodes.INVOKEDYNAMIC:
-			throw new UnsupportedOperationException();
-		case Opcodes.NEW:
-			return POP1;
-		case Opcodes.NEWARRAY:
-		case Opcodes.ANEWARRAY:
-		case Opcodes.ARRAYLENGTH:
-			return POP1_PUSH1;
-		case Opcodes.ATHROW:
-			return POP1;
-		case Opcodes.CHECKCAST:
-		case Opcodes.INSTANCEOF:
-			return POP1_PUSH1;
-		case Opcodes.MONITORENTER:
-		case Opcodes.MONITOREXIT:
-			return POP1;
-		case Opcodes.MULTIANEWARRAY:
-			return new StackMetadata(((MultiANewArrayInsnNode) insn).dims, 1);
-		case Opcodes.IFNULL:
-		case Opcodes.IFNONNULL:
-			return POP1;
-		}
-
-		throw new IllegalArgumentException();
-	}
-
-	private final int pops, pushes;
-
-	private StackMetadata(int pops, int pushes) {
-		this.pops = pops;
-		this.pushes = pushes;
-	}
-
-	public int getPops() {
-		return pops;
-	}
-
-	public int getPushes() {
-		return pushes;
-	}
-}
diff --git a/asm/src/main/java/dev/openrs2/asm/StackMetadata.kt b/asm/src/main/java/dev/openrs2/asm/StackMetadata.kt
new file mode 100644
index 00000000..e6d9e64c
--- /dev/null
+++ b/asm/src/main/java/dev/openrs2/asm/StackMetadata.kt
@@ -0,0 +1,211 @@
+package dev.openrs2.asm
+
+import org.objectweb.asm.Opcodes
+import org.objectweb.asm.Type
+import org.objectweb.asm.tree.*
+
+data class StackMetadata(val pops: Int, val pushes: Int)
+
+private val NONE = StackMetadata(0, 0)
+private val POP1 = StackMetadata(1, 0)
+private val POP1_PUSH1 = StackMetadata(1, 1)
+private val POP1_PUSH2 = StackMetadata(1, 2)
+private val POP2 = StackMetadata(2, 0)
+private val POP2_PUSH1 = StackMetadata(2, 1)
+private val POP2_PUSH2 = StackMetadata(2, 2)
+private val POP2_PUSH3 = StackMetadata(2, 3)
+private val POP2_PUSH4 = StackMetadata(2, 4)
+private val POP3 = StackMetadata(3, 0)
+private val POP3_PUSH2 = StackMetadata(3, 2)
+private val POP3_PUSH4 = StackMetadata(3, 4)
+private val POP3_PUSH5 = StackMetadata(3, 5)
+private val POP4 = StackMetadata(4, 0)
+private val POP4_PUSH1 = StackMetadata(4, 1)
+private val POP4_PUSH2 = StackMetadata(4, 2)
+private val POP4_PUSH6 = StackMetadata(4, 6)
+private val PUSH1 = StackMetadata(0, 1)
+private val PUSH2 = StackMetadata(0, 2)
+
+private val SIMPLE_OPCODES = mapOf(
+    -1 to NONE,
+    Opcodes.NOP to NONE,
+    Opcodes.ACONST_NULL to PUSH1,
+    Opcodes.ICONST_M1 to PUSH1,
+    Opcodes.ICONST_0 to PUSH1,
+    Opcodes.ICONST_1 to PUSH1,
+    Opcodes.ICONST_2 to PUSH1,
+    Opcodes.ICONST_3 to PUSH1,
+    Opcodes.ICONST_4 to PUSH1,
+    Opcodes.ICONST_5 to PUSH1,
+    Opcodes.LCONST_0 to PUSH2,
+    Opcodes.LCONST_1 to PUSH2,
+    Opcodes.FCONST_0 to PUSH1,
+    Opcodes.FCONST_1 to PUSH1,
+    Opcodes.FCONST_2 to PUSH1,
+    Opcodes.DCONST_0 to PUSH2,
+    Opcodes.DCONST_1 to PUSH2,
+    Opcodes.BIPUSH to PUSH1,
+    Opcodes.SIPUSH to PUSH1,
+    Opcodes.ILOAD to PUSH1,
+    Opcodes.LLOAD to PUSH2,
+    Opcodes.FLOAD to PUSH1,
+    Opcodes.DLOAD to PUSH2,
+    Opcodes.ALOAD to PUSH1,
+    Opcodes.IALOAD to POP2_PUSH1,
+    Opcodes.LALOAD to POP2_PUSH2,
+    Opcodes.FALOAD to POP2_PUSH1,
+    Opcodes.DALOAD to POP2_PUSH2,
+    Opcodes.AALOAD to POP2_PUSH1,
+    Opcodes.BALOAD to POP2_PUSH1,
+    Opcodes.CALOAD to POP2_PUSH1,
+    Opcodes.SALOAD to POP2_PUSH1,
+    Opcodes.ISTORE to POP1,
+    Opcodes.LSTORE to POP2,
+    Opcodes.FSTORE to POP1,
+    Opcodes.DSTORE to POP2,
+    Opcodes.ASTORE to POP1,
+    Opcodes.IASTORE to POP3,
+    Opcodes.LASTORE to POP4,
+    Opcodes.FASTORE to POP3,
+    Opcodes.DASTORE to POP4,
+    Opcodes.AASTORE to POP3,
+    Opcodes.BASTORE to POP3,
+    Opcodes.CASTORE to POP3,
+    Opcodes.SASTORE to POP3,
+    Opcodes.POP to POP1,
+    Opcodes.POP2 to POP2,
+    Opcodes.DUP to POP1_PUSH2,
+    Opcodes.DUP_X1 to POP2_PUSH3,
+    Opcodes.DUP_X2 to POP3_PUSH4,
+    Opcodes.DUP2 to POP2_PUSH4,
+    Opcodes.DUP2_X1 to POP3_PUSH5,
+    Opcodes.DUP2_X2 to POP4_PUSH6,
+    Opcodes.SWAP to POP2_PUSH2,
+    Opcodes.IADD to POP2_PUSH1,
+    Opcodes.LADD to POP4_PUSH2,
+    Opcodes.FADD to POP2_PUSH1,
+    Opcodes.DADD to POP4_PUSH2,
+    Opcodes.ISUB to POP2_PUSH1,
+    Opcodes.LSUB to POP4_PUSH2,
+    Opcodes.FSUB to POP2_PUSH1,
+    Opcodes.DSUB to POP4_PUSH2,
+    Opcodes.IMUL to POP2_PUSH1,
+    Opcodes.LMUL to POP4_PUSH2,
+    Opcodes.FMUL to POP2_PUSH1,
+    Opcodes.DMUL to POP4_PUSH2,
+    Opcodes.IDIV to POP2_PUSH1,
+    Opcodes.LDIV to POP4_PUSH2,
+    Opcodes.FDIV to POP2_PUSH1,
+    Opcodes.DDIV to POP4_PUSH2,
+    Opcodes.IREM to POP2_PUSH1,
+    Opcodes.LREM to POP4_PUSH2,
+    Opcodes.FREM to POP2_PUSH1,
+    Opcodes.DREM to POP4_PUSH2,
+    Opcodes.INEG to POP1_PUSH1,
+    Opcodes.LNEG to POP2_PUSH2,
+    Opcodes.FNEG to POP1_PUSH1,
+    Opcodes.DNEG to POP2_PUSH2,
+    Opcodes.ISHL to POP2_PUSH1,
+    Opcodes.LSHL to POP3_PUSH2,
+    Opcodes.ISHR to POP2_PUSH1,
+    Opcodes.LSHR to POP3_PUSH2,
+    Opcodes.IUSHR to POP2_PUSH1,
+    Opcodes.LUSHR to POP3_PUSH2,
+    Opcodes.IAND to POP2_PUSH1,
+    Opcodes.LAND to POP4_PUSH2,
+    Opcodes.IOR to POP2_PUSH1,
+    Opcodes.LOR to POP4_PUSH2,
+    Opcodes.IXOR to POP2_PUSH1,
+    Opcodes.LXOR to POP4_PUSH2,
+    Opcodes.IINC to NONE,
+    Opcodes.I2L to POP1_PUSH2,
+    Opcodes.I2F to POP1_PUSH1,
+    Opcodes.I2D to POP1_PUSH2,
+    Opcodes.L2I to POP2_PUSH1,
+    Opcodes.L2F to POP2_PUSH1,
+    Opcodes.L2D to POP2_PUSH2,
+    Opcodes.F2I to POP1_PUSH1,
+    Opcodes.F2L to POP1_PUSH2,
+    Opcodes.F2D to POP1_PUSH2,
+    Opcodes.D2I to POP2_PUSH1,
+    Opcodes.D2L to POP2_PUSH2,
+    Opcodes.D2F to POP2_PUSH1,
+    Opcodes.I2B to POP1_PUSH1,
+    Opcodes.I2C to POP1_PUSH1,
+    Opcodes.I2S to POP1_PUSH1,
+    Opcodes.LCMP to POP4_PUSH1,
+    Opcodes.FCMPL to POP2_PUSH1,
+    Opcodes.FCMPG to POP2_PUSH1,
+    Opcodes.DCMPL to POP4_PUSH1,
+    Opcodes.DCMPG to POP4_PUSH1,
+    Opcodes.IFEQ to POP1,
+    Opcodes.IFNE to POP1,
+    Opcodes.IFLT to POP1,
+    Opcodes.IFGE to POP1,
+    Opcodes.IFGT to POP1,
+    Opcodes.IFLE to POP1,
+    Opcodes.IF_ICMPEQ to POP2,
+    Opcodes.IF_ICMPNE to POP2,
+    Opcodes.IF_ICMPLT to POP2,
+    Opcodes.IF_ICMPGE to POP2,
+    Opcodes.IF_ICMPGT to POP2,
+    Opcodes.IF_ICMPLE to POP2,
+    Opcodes.IF_ACMPEQ to POP2,
+    Opcodes.IF_ACMPNE to POP2,
+    Opcodes.GOTO to NONE,
+    Opcodes.JSR to PUSH1,
+    Opcodes.RET to NONE,
+    Opcodes.TABLESWITCH to POP1,
+    Opcodes.LOOKUPSWITCH to POP1,
+    Opcodes.IRETURN to POP1,
+    Opcodes.LRETURN to POP2,
+    Opcodes.FRETURN to POP1,
+    Opcodes.DRETURN to POP2,
+    Opcodes.ARETURN to POP1,
+    Opcodes.RETURN to NONE,
+    Opcodes.NEW to POP1,
+    Opcodes.NEWARRAY to POP1_PUSH1,
+    Opcodes.ANEWARRAY to POP1_PUSH1,
+    Opcodes.ARRAYLENGTH to POP1_PUSH1,
+    Opcodes.ATHROW to POP1,
+    Opcodes.CHECKCAST to POP1_PUSH1,
+    Opcodes.INSTANCEOF to POP1_PUSH1,
+    Opcodes.MONITORENTER to POP1,
+    Opcodes.MONITOREXIT to POP1,
+    Opcodes.IFNULL to POP1,
+    Opcodes.IFNONNULL to POP1
+)
+
+fun AbstractInsnNode.stackMetadata(): StackMetadata = when (this) {
+    is LdcInsnNode -> if (cst is Double || cst is Long) {
+        PUSH2
+    } else {
+        PUSH1
+    }
+    is FieldInsnNode -> {
+        val fieldSize = Type.getType(desc).size
+        var pushes = 0
+        var pops = 0
+        if (opcode == Opcodes.GETFIELD || opcode == Opcodes.PUTFIELD) {
+            pops++
+        }
+        if (opcode == Opcodes.PUTFIELD || opcode == Opcodes.PUTSTATIC) {
+            pushes += fieldSize
+        } else {
+            pops += fieldSize
+        }
+        StackMetadata(pops, pushes)
+    }
+    is MethodInsnNode -> {
+        val argumentsAndReturnSizes = Type.getArgumentsAndReturnSizes(desc)
+        val pushes = argumentsAndReturnSizes shr 2
+        var pops = argumentsAndReturnSizes and 0x3
+        if (opcode != Opcodes.INVOKESTATIC) {
+            pops++
+        }
+        StackMetadata(pops, pushes)
+    }
+    is InvokeDynamicInsnNode -> throw UnsupportedOperationException()
+    is MultiANewArrayInsnNode -> StackMetadata(dims, 1)
+    else -> SIMPLE_OPCODES[opcode] ?: throw IllegalArgumentException()
+}
diff --git a/deob/src/main/java/dev/openrs2/deob/transform/DummyArgTransformer.java b/deob/src/main/java/dev/openrs2/deob/transform/DummyArgTransformer.java
index a5f10677..7a37b7cf 100644
--- a/deob/src/main/java/dev/openrs2/deob/transform/DummyArgTransformer.java
+++ b/deob/src/main/java/dev/openrs2/deob/transform/DummyArgTransformer.java
@@ -14,7 +14,7 @@ import com.google.common.collect.Multimap;
 import dev.openrs2.asm.InsnMatcher;
 import dev.openrs2.asm.InsnNodeUtils;
 import dev.openrs2.asm.MemberRef;
-import dev.openrs2.asm.StackMetadata;
+import dev.openrs2.asm.StackMetadataKt;
 import dev.openrs2.asm.classpath.ClassPath;
 import dev.openrs2.asm.classpath.Library;
 import dev.openrs2.asm.transform.Transformer;
@@ -390,7 +390,7 @@ public final class DummyArgTransformer extends Transformer {
 					continue;
 				}
 
-				if (StackMetadata.get(insn).getPushes() != 1) {
+				if (StackMetadataKt.stackMetadata(insn).getPushes() != 1) {
 					continue;
 				}