diff --git a/src/main/java/lysis/builder/MethodParser.java b/src/main/java/lysis/builder/MethodParser.java
index 15e5833..e4d6d99 100644
--- a/src/main/java/lysis/builder/MethodParser.java
+++ b/src/main/java/lysis/builder/MethodParser.java
@@ -236,7 +236,7 @@ private LInstruction readInstruction(SPOpcode op) throws Exception {
 		case align_pri:
 		case align_alt:
 		{
-			Register reg = (op == SPOpcode.addr_pri) ? Register.Pri : Register.Alt;
+			Register reg = (op == SPOpcode.align_pri) ? Register.Pri : Register.Alt;
 			return new LAlign(trackGlobal(readInt32LittleEndian()), reg);
 		}
 
diff --git a/src/main/java/lysis/builder/SourceBuilder.java b/src/main/java/lysis/builder/SourceBuilder.java
index 5d969ef..57a591d 100644
--- a/src/main/java/lysis/builder/SourceBuilder.java
+++ b/src/main/java/lysis/builder/SourceBuilder.java
@@ -26,6 +26,7 @@
 import lysis.nodes.NodeBlock;
 import lysis.nodes.NodeList;
 import lysis.nodes.NodeType;
+import lysis.nodes.types.DAlign;
 import lysis.nodes.types.DArrayRef;
 import lysis.nodes.types.DBinary;
 import lysis.nodes.types.DBoolean;
@@ -410,6 +411,10 @@ private String buildLoadStoreRef(DNode node) throws Exception {
 		case Unary: {
 			return buildUnary((DUnary) node) + "/* ERROR unknown load Unary */";
 		}
+		
+		case Align: {
+			return buildAlign((DAlign) node);
+		}
 
 		default:
 			throw new Exception("unknown load " + node.type());
@@ -419,6 +424,10 @@ private String buildLoadStoreRef(DNode node) throws Exception {
 	private String buildLoad(DLoad load) throws Exception {
 		return buildLoadStoreRef(load.getOperand(0));
 	}
+	
+	private String buildAlign(DAlign alg) throws Exception {
+		return buildLoadStoreRef(alg.getOperand(0));
+	}
 
 	private String buildSysReq(DSysReq sysreq) throws Exception {
 		String args = "";
@@ -813,6 +822,9 @@ private void writeStatement(DNode node) throws Exception {
 		case Label:
 			writeLabel((DLabel) node);
 			break;
+			
+		case Align:
+			break;
 
 		default:
 			throw new Exception("unknown op (" + node.type() + ")");
diff --git a/src/main/java/lysis/nodes/NodeBuilder.java b/src/main/java/lysis/nodes/NodeBuilder.java
index 583cf81..b853d2c 100644
--- a/src/main/java/lysis/nodes/NodeBuilder.java
+++ b/src/main/java/lysis/nodes/NodeBuilder.java
@@ -66,6 +66,7 @@
 import lysis.lstructure.Register;
 import lysis.lstructure.Scope;
 import lysis.lstructure.Variable;
+import lysis.nodes.types.DAlign;
 import lysis.nodes.types.DArrayRef;
 import lysis.nodes.types.DBinary;
 import lysis.nodes.types.DBoundsCheck;
@@ -387,6 +388,15 @@ public void traverse(NodeBlock block) throws Exception {
 				block.add(node);
 				break;
 			}
+			
+			case Align: {
+				LAlign ins = (LAlign) uins;
+				DAlign node = new DAlign((ins.reg() == Register.Pri) ? block.stack().pri() : block.stack().alt(), ins.number());
+					
+				block.stack().set((ins.reg() == Register.Pri) ? Register.Pri : Register.Alt, node);
+				block.add(node);
+				break;
+			}
 
 			case Move: {
 				LMove ins = (LMove) uins;
@@ -792,15 +802,6 @@ public void traverse(NodeBlock block) throws Exception {
 				block.add(new DLabel(ins.pc()));
 				break;
 			}
-			
-			case Align: {
-				LAlign ins = (LAlign) uins;
-				if (ins.reg() == Register.Pri)
-					block.stack().set(Register.Pri, block.stack().alt());
-				else
-					block.stack().set(Register.Alt, block.stack().pri());
-				break;
-			}
 
 			default:
 				throw new Exception("unhandled opcode " + uins.op());
diff --git a/src/main/java/lysis/nodes/NodeRewriter.java b/src/main/java/lysis/nodes/NodeRewriter.java
index a10a912..acc6a22 100644
--- a/src/main/java/lysis/nodes/NodeRewriter.java
+++ b/src/main/java/lysis/nodes/NodeRewriter.java
@@ -1,5 +1,6 @@
 package lysis.nodes;
 
+import lysis.nodes.types.DAlign;
 import lysis.nodes.types.DArrayRef;
 import lysis.nodes.types.DBinary;
 import lysis.nodes.types.DBoundsCheck;
@@ -291,6 +292,10 @@ public void visit(DCall call) throws Exception {
 			throw new Exception("unknown spop");
 		}
 	}
+	
+	@Override
+	public void visit(DAlign check) {
+	}
 
 	private void rewriteBlock(NodeBlock block) throws Exception {
 		current_ = block;
diff --git a/src/main/java/lysis/nodes/NodeType.java b/src/main/java/lysis/nodes/NodeType.java
index 83ee077..d406522 100644
--- a/src/main/java/lysis/nodes/NodeType.java
+++ b/src/main/java/lysis/nodes/NodeType.java
@@ -1,5 +1,5 @@
 package lysis.nodes;
 
 public enum NodeType {
-	Sentinel, Constant, DeclareLocal, DeclareStatic, LocalRef, Jump, JumpCondition, SysReq, Binary, BoundsCheck, ArrayRef, Store, Load, Return, Global, String, Boolean, Float, Function, Character, Call, TempName, Phi, Unary, IncDec, Heap, MemCopy, InlineArray, Switch, GenArray, Label
+	Sentinel, Constant, DeclareLocal, DeclareStatic, LocalRef, Jump, JumpCondition, SysReq, Binary, BoundsCheck, ArrayRef, Store, Load, Return, Global, String, Boolean, Float, Function, Character, Call, TempName, Phi, Unary, IncDec, Heap, MemCopy, InlineArray, Switch, GenArray, Label, Align
 }
diff --git a/src/main/java/lysis/nodes/NodeVisitor.java b/src/main/java/lysis/nodes/NodeVisitor.java
index 38e55ab..fb878b6 100644
--- a/src/main/java/lysis/nodes/NodeVisitor.java
+++ b/src/main/java/lysis/nodes/NodeVisitor.java
@@ -1,5 +1,6 @@
 package lysis.nodes;
 
+import lysis.nodes.types.DAlign;
 import lysis.nodes.types.DArrayRef;
 import lysis.nodes.types.DBinary;
 import lysis.nodes.types.DBoolean;
@@ -117,4 +118,7 @@ public void visit(DGenArray genarray) throws Exception {
 
 	public void visit(DLabel gototarget) {
 	}
+	
+	public void visit(DAlign number) {
+	}
 }
diff --git a/src/main/java/lysis/nodes/types/DAlign.java b/src/main/java/lysis/nodes/types/DAlign.java
new file mode 100644
index 0000000..c614ad1
--- /dev/null
+++ b/src/main/java/lysis/nodes/types/DAlign.java
@@ -0,0 +1,33 @@
+package lysis.nodes.types;
+
+import lysis.nodes.NodeType;
+import lysis.nodes.NodeVisitor;
+
+public class DAlign extends DUnaryNode {
+
+	private long amount_;
+
+	public DAlign(DNode index, long amount) throws Exception {
+		super(index);
+		amount_ = amount;
+	}
+
+	public long amount() {
+		return amount_;
+	}
+
+	@Override
+	public NodeType type() {
+		return NodeType.Align;
+	}
+
+	@Override
+	public void accept(NodeVisitor visitor) {
+		visitor.visit(this);
+	}
+
+	@Override
+	public boolean guard() {
+		return true;
+	}
+}
diff --git a/src/main/java/lysis/types/BackwardTypePropagation.java b/src/main/java/lysis/types/BackwardTypePropagation.java
index 192b92c..0778f3d 100644
--- a/src/main/java/lysis/types/BackwardTypePropagation.java
+++ b/src/main/java/lysis/types/BackwardTypePropagation.java
@@ -15,6 +15,7 @@
 import lysis.nodes.NodeList;
 import lysis.nodes.NodeType;
 import lysis.nodes.NodeVisitor;
+import lysis.nodes.types.DAlign;
 import lysis.nodes.types.DArrayRef;
 import lysis.nodes.types.DBinary;
 import lysis.nodes.types.DBoolean;
@@ -401,4 +402,7 @@ public void visit(DGenArray genarray) throws Exception {
 			genarray.getOperand(i).accept(this);
 		}
 	}
+	
+	public void visit(DAlign check) {
+	}
 }
diff --git a/src/main/java/lysis/types/ForwardTypePropagation.java b/src/main/java/lysis/types/ForwardTypePropagation.java
index 490c213..526d505 100644
--- a/src/main/java/lysis/types/ForwardTypePropagation.java
+++ b/src/main/java/lysis/types/ForwardTypePropagation.java
@@ -9,6 +9,7 @@
 import lysis.nodes.NodeList;
 import lysis.nodes.NodeType;
 import lysis.nodes.NodeVisitor;
+import lysis.nodes.types.DAlign;
 import lysis.nodes.types.DArrayRef;
 import lysis.nodes.types.DBinary;
 import lysis.nodes.types.DBoundsCheck;
@@ -293,4 +294,8 @@ public void visit(DGenArray genarray) throws Exception {
 			genarray.addType(new TypeUnit(tu));
 		}
 	}
+	
+	@Override
+	public void visit(DAlign node) {
+	}
 }