ia32: Helper function for getting an element of a fixed array from object poi...

src/ia32/codegen-ia32.h

 // Copyright 2010 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 325 matching lines @@
 
   void AddDeferred(DeferredCode* code) { deferred_.Add(code); }
 
   bool in_spilled_code() const { return in_spilled_code_; }
   void set_in_spilled_code(bool flag) { in_spilled_code_ = flag; }
 
   // If the name is an inline runtime function call return the number of
   // expected arguments. Otherwise return -1.
   static int InlineRuntimeCallArgumentsCount(Handle<String> name);
 
+  // Return a position of the element at |index_as_smi| + |additional_offset|
+  // in FixedArray pointer to which is held in |array|.  |index_as_smi| is Smi.
+  static Operand FixedArrayElementOperand(Register array,
+                                          Register index_as_smi,
+                                          int additional_offset = 0) {
+    int offset = FixedArray::kHeaderSize + additional_offset * kPointerSize;
+    return FieldOperand(array, index_as_smi, times_half_pointer_size, offset);
+  }
+
  private:
   // Construction/Destruction
   explicit CodeGenerator(MacroAssembler* masm);
 
   // Accessors
   inline bool is_eval();
   inline Scope* scope();
 
   // Generating deferred code.
   void ProcessDeferred();
@@ skipping 738 matching lines @@
     return ObjectBits::encode(object_.code()) |
            AddressBits::encode(addr_.code()) |
            ScratchBits::encode(scratch_.code());
   }
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_IA32_CODEGEN_IA32_H_