Inline recognized List factory in the flow graph optimizer.

runtime/vm/intermediate_language.h

Index: runtime/vm/intermediate_language.h
===================================================================
--- runtime/vm/intermediate_language.h	(revision 32158)
+++ runtime/vm/intermediate_language.h	(working copy)
@@ -4095,29 +4095,28 @@
 };
 
 
-class CreateArrayInstr : public TemplateDefinition<1> {
+class CreateArrayInstr : public TemplateDefinition<2> {
  public:
   CreateArrayInstr(intptr_t token_pos,
-                   intptr_t num_elements,
-                   const AbstractType& type,
-                   Value* element_type)
-      : token_pos_(token_pos),
-        num_elements_(num_elements),
-        type_(type) {
-    ASSERT(type_.IsZoneHandle());
-    ASSERT(!type_.IsNull());
-    ASSERT(type_.IsFinalized());
-    SetInputAt(0, element_type);
+                   Value* element_type,
+                   Value* num_elements)
+      : token_pos_(token_pos) {
+    SetInputAt(kElementTypePos, element_type);
+    SetInputAt(kLengthPos, num_elements);
   }
 
+  enum {
+    kElementTypePos = 0,
+    kLengthPos = 1
+  };
+
   DECLARE_INSTRUCTION(CreateArray)
   virtual CompileType ComputeType() const;
 
-  intptr_t num_elements() const { return num_elements_; }
 
   intptr_t token_pos() const { return token_pos_; }
-  const AbstractType& type() const { return type_; }
-  Value* element_type() const { return inputs_[0]; }
+  Value* element_type() const { return inputs_[kElementTypePos]; }
+  Value* num_elements() const { return inputs_[kLengthPos]; }
 
   virtual void PrintOperandsTo(BufferFormatter* f) const;
 
@@ -4129,8 +4128,6 @@
 
  private:
   const intptr_t token_pos_;
-  const intptr_t num_elements_;
-  const AbstractType& type_;
 
   DISALLOW_COPY_AND_ASSIGN(CreateArrayInstr);
 };