Give the binary op stubs better names to make profiles more informative.

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 5662 matching lines @@
       *required_shift = 2;
       break;
     default:
       ASSERT(!IsPowerOf2(known_int));  // That would be very inefficient.
       __ mul(result, source, known_int_register);
       *required_shift = 0;
   }
 }
 
 
+const char* GenericBinaryOpStub::GetName() {
+  if (name_ != NULL) return name_;
+  const int len = 100;
+  name_ = Bootstrapper::AllocateAutoDeletedArray(len);
+  if (name_ == NULL) return "OOM";
+  const char* op_name = Token::Name(op_);
+  const char* overwrite_name;
+  switch (mode_) {
+    case NO_OVERWRITE: overwrite_name = "Alloc"; break;
+    case OVERWRITE_RIGHT: overwrite_name = "OverwriteRight"; break;
+    case OVERWRITE_LEFT: overwrite_name = "OverwriteLeft"; break;
+    default: overwrite_name = "UnknownOverwrite"; break;
+  }
+
+  OS::SNPrintF(Vector<char>(name_, len),
+               "GenericBinaryOpStub_%s_%s%s",
+               op_name,
+               overwrite_name,
+               specialized_on_rhs_ ? "_ConstantRhs" : 0);
+  return name_;
+}
+
+
 void GenericBinaryOpStub::Generate(MacroAssembler* masm) {
   // r1 : x
   // r0 : y
   // result : r0
 
   // All ops need to know whether we are dealing with two Smis.  Set up r2 to
   // tell us that.
   __ orr(r2, r1, Operand(r0));  // r2 = x | y;
 
   switch (op_) {
@@ skipping 866 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