Improve the generated code for the instanceof operator.

src/codegen-arm.cc

 // Copyright 2006-2008 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 869 matching lines @@
 
 
 class GetPropertyStub : public CodeStub {
  public:
   GetPropertyStub() { }
 
  private:
   Major MajorKey() { return GetProperty; }
   int MinorKey() { return 0; }
   void Generate(MacroAssembler* masm);
-
-  const char* GetName() { return "GetPropertyStub"; }
 };
 
 
 class SetPropertyStub : public CodeStub {
  public:
   SetPropertyStub() { }
 
  private:
   Major MajorKey() { return SetProperty; }
   int MinorKey() { return 0; }
   void Generate(MacroAssembler* masm);
-
-  const char* GetName() { return "GetPropertyStub"; }
 };
 
 
 class GenericBinaryOpStub : public CodeStub {
  public:
   explicit GenericBinaryOpStub(Token::Value op) : op_(op) { }
 
  private:
   Token::Value op_;
 
@@ skipping 29 matching lines @@
   InvokeBuiltinStub(Kind kind, int argc) : kind_(kind), argc_(argc) { }
 
  private:
   Kind kind_;
   int argc_;
 
   Major MajorKey() { return InvokeBuiltin; }
   int MinorKey() { return (argc_ << 3) | static_cast<int>(kind_); }
   void Generate(MacroAssembler* masm);
 
-  const char* GetName() { return "InvokeBuiltinStub"; }
-
 #ifdef DEBUG
   void Print() {
     PrintF("InvokeBuiltinStub (kind %d, argc, %d)\n",
            static_cast<int>(kind_),
            argc_);
   }
 #endif
 };
 
 
@@ skipping 321 matching lines @@
 
 class CallFunctionStub: public CodeStub {
  public:
   explicit CallFunctionStub(int argc) : argc_(argc) {}
 
   void Generate(MacroAssembler* masm);
 
  private:
   int argc_;
 
-  const char* GetName() { return "CallFuntionStub"; }
-
 #if defined(DEBUG)
   void Print() { PrintF("CallFunctionStub (argc %d)\n", argc_); }
 #endif  // defined(DEBUG)
 
   Major MajorKey() { return CallFunction; }
   int MinorKey() { return argc_; }
 };
 
 
 // Call the function on the stack with the given arguments.
@@ skipping 2070 matching lines @@
 
     case Token::IN:
       __ mov(r0, Operand(1));  // not counting receiver
       __ InvokeBuiltin(Builtins::IN, CALL_JS);
       __ push(r0);
       break;
 
     case Token::INSTANCEOF:
       __ mov(r0, Operand(1));  // not counting receiver
       __ InvokeBuiltin(Builtins::INSTANCE_OF, CALL_JS);
-      __ push(r0);
+      __ tst(r0, Operand(r0));
+      cc_reg_ = eq;
       break;
 
     default:
       UNREACHABLE();
   }
 }
 
 
 void ArmCodeGenerator::RecordStatementPosition(Node* node) {
   if (FLAG_debug_info) {
@@ skipping 1117 matching lines @@
                                      bool is_eval) {
   Handle<Code> code = ArmCodeGenerator::MakeCode(fun, script, is_eval);
   if (!code.is_null()) {
     Counters::total_compiled_code_size.Increment(code->instruction_size());
   }
   return code;
 }
 
 
 } }  // namespace v8::internal