Implement a type recording ToBoolean IC.

src/objects-inl.h

 // Copyright 2011 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 140 matching lines @@
     && HeapObject::cast(this)->map()->instance_type() == HEAP_NUMBER_TYPE;
 }
 
 
 bool Object::IsString() {
   return Object::IsHeapObject()
     && HeapObject::cast(this)->map()->instance_type() < FIRST_NONSTRING_TYPE;
 }
 
 
+bool Object::IsSpecObject() {
+  return Object::IsHeapObject()
+    && HeapObject::cast(this)->map()->instance_type() >= FIRST_SPEC_OBJECT_TYPE;
+}
+
+
 bool Object::IsSymbol() {
   if (!this->IsHeapObject()) return false;
   uint32_t type = HeapObject::cast(this)->map()->instance_type();
   // Because the symbol tag is non-zero and no non-string types have the
   // symbol bit set we can test for symbols with a very simple test
   // operation.
   ASSERT(kSymbolTag != 0);
   ASSERT(kNotStringTag + kIsSymbolMask > LAST_TYPE);
   return (type & kIsSymbolMask) != 0;
 }
@@ skipping 2579 matching lines @@
 int Code::arguments_count() {
   ASSERT(is_call_stub() || is_keyed_call_stub() || kind() == STUB);
   return ExtractArgumentsCountFromFlags(flags());
 }
 
 
 int Code::major_key() {
   ASSERT(kind() == STUB ||
          kind() == UNARY_OP_IC ||
          kind() == BINARY_OP_IC ||
-         kind() == COMPARE_IC);
+         kind() == COMPARE_IC ||
+         kind() == TO_BOOLEAN_IC);
   return READ_BYTE_FIELD(this, kStubMajorKeyOffset);
 }
 
 
 void Code::set_major_key(int major) {
   ASSERT(kind() == STUB ||
          kind() == UNARY_OP_IC ||
          kind() == BINARY_OP_IC ||
-         kind() == COMPARE_IC);
+         kind() == COMPARE_IC ||
+         kind() == TO_BOOLEAN_IC);
   ASSERT(0 <= major && major < 256);
   WRITE_BYTE_FIELD(this, kStubMajorKeyOffset, major);
 }
 
 
 bool Code::optimizable() {
   ASSERT(kind() == FUNCTION);
   return READ_BYTE_FIELD(this, kOptimizableOffset) == 1;
 }
 
@@ skipping 121 matching lines @@
   return READ_BYTE_FIELD(this, kCompareStateOffset);
 }
 
 
 void Code::set_compare_state(byte value) {
   ASSERT(is_compare_ic_stub());
   WRITE_BYTE_FIELD(this, kCompareStateOffset, value);
 }
 
 
+byte Code::to_boolean_state() {
+  ASSERT(is_to_boolean_ic_stub());
+  return READ_BYTE_FIELD(this, kToBooleanTypeOffset);
+}
+
+
+void Code::set_to_boolean_state(byte value) {
+  ASSERT(is_to_boolean_ic_stub());
+  WRITE_BYTE_FIELD(this, kToBooleanTypeOffset, value);
+}
+
 bool Code::is_inline_cache_stub() {
   Kind kind = this->kind();
   return kind >= FIRST_IC_KIND && kind <= LAST_IC_KIND;
 }
 
 
 Code::Flags Code::ComputeFlags(Kind kind,
                                InLoopFlag in_loop,
                                InlineCacheState ic_state,
                                ExtraICState extra_ic_state,
@@ skipping 1560 matching lines @@
 #undef WRITE_INT_FIELD
 #undef READ_SHORT_FIELD
 #undef WRITE_SHORT_FIELD
 #undef READ_BYTE_FIELD
 #undef WRITE_BYTE_FIELD
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_OBJECTS_INL_H_