llvmir some opt

midend/llvm/instr/ExtendInstr.java

@@ -0,0 +1,31 @@
+package midend.llvm.instr;
+
+import midend.llvm.type.IrType;
+import midend.llvm.value.IrValue;
+
+public class ExtendInstr extends IrInstr {
+    private IrType targetType;
+
+    public ExtendInstr(String name, IrType targetType, IrValue src) {
+        super(targetType, name, IrInstrType.EXTEND);
+        this.targetType = targetType;
+        addUse(src);
+    }
+
+    public IrValue getSrc() {
+        return getUse(0);
+    }
+
+    public IrType getTargetType() {
+        return this.targetType;
+    }
+
+    public IrType getSrcType() {
+        return getSrc().getType();
+    }
+
+    public String toString() {
+        return getName() + " = zext " + getSrc().getType()
+                + " " + getSrc().getName() + " to " + getTargetType();
+    }
+}