Implement set trap for proxies, and revamp class hierarchy in preparation

src/ia32/builtins-ia32.cc

Index: src/ia32/builtins-ia32.cc
diff --git a/src/ia32/builtins-ia32.cc b/src/ia32/builtins-ia32.cc
index b7cf13c2ba4601bf4c390cbf6a3225553aab1eb8..29afba45400c77ef58ea776771a03761d7deed85 100644
--- a/src/ia32/builtins-ia32.cc
+++ b/src/ia32/builtins-ia32.cc
@@ -369,8 +369,8 @@ static void Generate_JSConstructStubHelper(MacroAssembler* masm,
     __ j(zero, &use_receiver);
 
     // If the type of the result (stored in its map) is less than
-    // FIRST_JS_OBJECT_TYPE, it is not an object in the ECMA sense.
-    __ CmpObjectType(eax, FIRST_JS_OBJECT_TYPE, ecx);
+    // FIRST_SPEC_OBJECT_TYPE, it is not an object in the ECMA sense.
+    __ CmpObjectType(eax, FIRST_SPEC_OBJECT_TYPE, ecx);
     __ j(above_equal, &exit);
 
     // Throw away the result of the constructor invocation and use the
@@ -642,9 +642,8 @@ void Builtins::Generate_FunctionCall(MacroAssembler* masm) {
     __ j(equal, &use_global_receiver);
     __ cmp(ebx, factory->undefined_value());
     __ j(equal, &use_global_receiver);
-    STATIC_ASSERT(LAST_JS_OBJECT_TYPE + 1 == LAST_TYPE);
-    STATIC_ASSERT(LAST_TYPE == JS_FUNCTION_TYPE);
-    __ CmpObjectType(ebx, FIRST_JS_OBJECT_TYPE, ecx);
+    STATIC_ASSERT(LAST_SPEC_OBJECT_TYPE == LAST_TYPE);
+    __ CmpObjectType(ebx, FIRST_SPEC_OBJECT_TYPE, ecx);
     __ j(above_equal, &shift_arguments);
 
     __ bind(&convert_to_object);
@@ -809,9 +808,8 @@ void Builtins::Generate_FunctionApply(MacroAssembler* masm) {
     __ j(equal, &use_global_receiver);
     __ cmp(ebx, factory->undefined_value());
     __ j(equal, &use_global_receiver);
-    STATIC_ASSERT(LAST_JS_OBJECT_TYPE + 1 == LAST_TYPE);
-    STATIC_ASSERT(LAST_TYPE == JS_FUNCTION_TYPE);
-    __ CmpObjectType(ebx, FIRST_JS_OBJECT_TYPE, ecx);
+    STATIC_ASSERT(LAST_SPEC_OBJECT_TYPE == LAST_TYPE);
+    __ CmpObjectType(ebx, FIRST_SPEC_OBJECT_TYPE, ecx);
     __ j(above_equal, &push_receiver);
 
     __ bind(&call_to_object);