Replace LoadNamedFieldPolymorphic with explicit branches.

src/ia32/lithium-codegen-ia32.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 351 matching lines @@
   // true and false label should be made, to optimize fallthrough.
   Condition EmitIsString(Register input,
                          Register temp1,
                          Label* is_not_string,
                          SmiCheck check_needed);
 
   // Emits optimized code for %_IsConstructCall().
   // Caller should branch on equal condition.
   void EmitIsConstructCall(Register temp);
 
-  void EmitLoadFieldOrConstant(Register result,
-                               Register object,
-                               Handle<Map> type,
-                               Handle<String> name,
-                               LEnvironment* env);
-
   // Emits optimized code to deep-copy the contents of statically known
   // object graphs (e.g. object literal boilerplate).
   void EmitDeepCopy(Handle<JSObject> object,
                     Register result,
                     Register source,
                     int* offset,
                     AllocationSiteMode mode);
 
   void EnsureSpaceForLazyDeopt();
   void DoLoadKeyedExternalArray(LLoadKeyed* instr);
@@ skipping 113 matching lines @@
   LCodeGen* codegen_;
   Label entry_;
   Label exit_;
   Label* external_exit_;
   int instruction_index_;
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_IA32_LITHIUM_CODEGEN_IA32_H_