diff -r f9c4371d59d4 -r 7721042bdb67 src/compiler/HIR.h
--- a/src/compiler/HIR.h	Thu Dec 27 21:07:03 2012 -0800
+++ b/src/compiler/HIR.h	Fri Dec 28 17:13:51 2012 -0800
@@ -34,6 +34,7 @@
     _(Array)                            \
     _(Store)                            \
     _(ToRef)                            \
+    _(NewDependentArray)                \
     /* Special LValue types */          \
     _(Index)                            \
     _(Local)                            \
@@ -306,6 +307,13 @@
     void load(BytecodeEmitter &emitter_);
     bool ref(BytecodeEmitter &emitter_);
 
+    HIR *base() const {
+        return left_;
+    }
+    HIR *index() const {
+        return right_;
+    }
+
   private:
     HIR *left_;
     HIR *right_;
@@ -515,6 +523,30 @@
     HIR *in_;
 };
 
+class HNewDependentArray : public HIR
+{
+  public:
+    HNewDependentArray(AstNode *node, Type *type, HIR *base, HIR *index)
+      : HIR(node, type),
+        base_(base),
+        index_(index)
+    {
+    }
+
+    DEFINE_HIR(NewDependentArray);
+
+    HIR *base() const {
+        return base_;
+    }
+    HIR *index() const {
+        return index_;
+    }
+
+  private:
+    HIR *base_;
+    HIR *index_;
+};
+
 #undef DEFINE_HIR
 
 void EmitHIR(Zone *zone, BytecodeEmitter &emitter, HIR *hir);