Handle overwriting valueOf on String objects correctly when adding...

src/arm/macro-assembler-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 1638 matching lines @@
 void MacroAssembler::JumpIfEitherSmi(Register reg1,
                                      Register reg2,
                                      Label* on_either_smi) {
   ASSERT_EQ(0, kSmiTag);
   tst(reg1, Operand(kSmiTagMask));
   tst(reg2, Operand(kSmiTagMask), ne);
   b(eq, on_either_smi);
 }
 
 
+void MacroAssembler::AbortIfSmi(Register object) {
+  ASSERT_EQ(0, kSmiTag);
+  tst(object, Operand(kSmiTagMask));
+  Assert(ne, "Operand is a smi");
+}
+
+
 void MacroAssembler::JumpIfNonSmisNotBothSequentialAsciiStrings(
     Register first,
     Register second,
     Register scratch1,
     Register scratch2,
     Label* failure) {
   // Test that both first and second are sequential ASCII strings.
   // Assume that they are non-smis.
   ldr(scratch1, FieldMemOperand(first, HeapObject::kMapOffset));
   ldr(scratch2, FieldMemOperand(second, HeapObject::kMapOffset));
@@ skipping 242 matching lines @@
 
 void CodePatcher::Emit(Address addr) {
   masm()->emit(reinterpret_cast<Instr>(addr));
 }
 #endif  // ENABLE_DEBUGGER_SUPPORT
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_ARM