diff -r bbb498ccb4ac -r 26e3035cdffc src/compiler/HIR.h
--- a/src/compiler/HIR.h	Sat Dec 22 23:18:57 2012 -0800
+++ b/src/compiler/HIR.h	Mon Dec 24 02:49:20 2012 -0800
@@ -29,6 +29,8 @@
     _(Call)                             \
     _(Integer)                          \
     _(Float)                            \
+    _(String)                           \
+    _(Array)                            \
     _(Store)                            \
     _(ToRef)                            \
     /* Special LValue types */          \
@@ -48,6 +50,7 @@
 class HIRVisitor;
 class AstNode;
 class HLValue;
+class Array;
 
 class HIR : public PoolObject
 {
@@ -142,6 +145,42 @@
     int value_;
 };
 
+class HString : public HIR
+{
+  public:
+    HString(AstNode *node, Type *type, String *string)
+      : HIR(node, type),
+        string_(string)
+    {
+    }
+
+    DEFINE_HIR(String);
+    Handle<String> string() const {
+        return string_;
+    }
+
+  private:
+    ScopedRoot<String> string_;
+};
+
+class HArray : public HIR
+{
+  public:
+    HArray(AstNode *node, Type *type, Array *array)
+      : HIR(node, type),
+        array_(array)
+    {
+    }
+
+    DEFINE_HIR(Array);
+    Handle<Array> array() const {
+        return array_;
+    }
+
+  private:
+    ScopedRoot<Array> array_;
+};
+
 class HConvert : public HIR
 {
   public: