Perform string add in generated code on IA-32 platforms...

src/arm/codegen-arm.cc

 // Copyright 2006-2009 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 3487 matching lines @@
       frame_->CallRuntime(Runtime::kMath_sin, 1);
       break;
     case COS:
       frame_->CallRuntime(Runtime::kMath_cos, 1);
       break;
   }
   frame_->EmitPush(r0);
 }
 
 
+void CodeGenerator::GenerateStringAdd(ZoneList<Expression*>* args) {
+  ASSERT_EQ(2, args->length());
+
+  Load(args->at(0));
+  Load(args->at(1));
+
+  frame_->CallRuntime(Runtime::kStringAdd, 2);
+  frame_->EmitPush(r0);
+}
+
+
 void CodeGenerator::GenerateObjectEquals(ZoneList<Expression*>* args) {
   VirtualFrame::SpilledScope spilled_scope;
   ASSERT(args->length() == 2);
 
   // Load the two objects into registers and perform the comparison.
   LoadAndSpill(args->at(0));
   LoadAndSpill(args->at(1));
   frame_->EmitPop(r0);
   frame_->EmitPop(r1);
   __ cmp(r0, Operand(r1));
@@ skipping 2952 matching lines @@
 int CompareStub::MinorKey() {
   // Encode the two parameters in a unique 16 bit value.
   ASSERT(static_cast<unsigned>(cc_) >> 28 < (1 << 15));
   return (static_cast<unsigned>(cc_) >> 27) | (strict_ ? 1 : 0);
 }
 
 
 #undef __
 
 } }  // namespace v8::internal