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

src/arm/lithium-codegen-arm.cc

 // 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 1741 matching lines @@
 
   // Load map.
   __ ldr(temp1, FieldMemOperand(input, HeapObject::kMapOffset));
   // Undetectable objects behave like undefined.
   __ ldrb(temp2, FieldMemOperand(temp1, Map::kBitFieldOffset));
   __ tst(temp2, Operand(1 << Map::kIsUndetectable));
   __ b(ne, is_not_object);
 
   // Load instance type and check that it is in object type range.
   __ ldrb(temp2, FieldMemOperand(temp1, Map::kInstanceTypeOffset));
-  __ cmp(temp2, Operand(FIRST_JS_OBJECT_TYPE));
+  __ cmp(temp2, Operand(FIRST_NONCALLABLE_SPEC_OBJECT_TYPE));
   __ b(lt, is_not_object);
-  __ cmp(temp2, Operand(LAST_JS_OBJECT_TYPE));
+  __ cmp(temp2, Operand(LAST_NONCALLABLE_SPEC_OBJECT_TYPE));
   return le;
 }
 
 
 void LCodeGen::DoIsObject(LIsObject* instr) {
   Register reg = ToRegister(instr->InputAt(0));
   Register result = ToRegister(instr->result());
   Register temp = scratch0();
   Label is_false, is_true, done;
 
@@ skipping 186 matching lines @@
 void LCodeGen::EmitClassOfTest(Label* is_true,
                                Label* is_false,
                                Handle<String>class_name,
                                Register input,
                                Register temp,
                                Register temp2) {
   ASSERT(!input.is(temp));
   ASSERT(!temp.is(temp2));  // But input and temp2 may be the same register.
   __ tst(input, Operand(kSmiTagMask));
   __ b(eq, is_false);
-  __ CompareObjectType(input, temp, temp2, FIRST_JS_OBJECT_TYPE);
+  __ CompareObjectType(input, temp, temp2, FIRST_SPEC_OBJECT_TYPE);
   __ b(lt, is_false);
 
   // Map is now in temp.
   // Functions have class 'Function'.
-  __ CompareInstanceType(temp, temp2, JS_FUNCTION_TYPE);
+  __ CompareInstanceType(temp, temp2, FIRST_CALLABLE_SPEC_OBJECT_TYPE);
   if (class_name->IsEqualTo(CStrVector("Function"))) {
-    __ b(eq, is_true);
+    __ b(ge, is_true);
   } else {
-    __ b(eq, is_false);
+    __ b(ge, is_false);
   }
 
   // Check if the constructor in the map is a function.
   __ ldr(temp, FieldMemOperand(temp, Map::kConstructorOffset));
 
-  // As long as JS_FUNCTION_TYPE is the last instance type and it is
-  // right after LAST_JS_OBJECT_TYPE, we can avoid checking for
-  // LAST_JS_OBJECT_TYPE.
-  ASSERT(LAST_TYPE == JS_FUNCTION_TYPE);
-  ASSERT(JS_FUNCTION_TYPE == LAST_JS_OBJECT_TYPE + 1);
+  // As long as LAST_CALLABLE_SPEC_OBJECT_TYPE is the last instance type and
+  // FIRST_CALLABLE_SPEC_OBJECT_TYPE comes right after
+  // LAST_NONCALLABLE_SPEC_OBJECT_TYPE, we can avoid checking for the latter.
+  ASSERT(LAST_TYPE == LAST_CALLABLE_SPEC_OBJECT_TYPE);
+  ASSERT(FIRST_CALLABLE_SPEC_OBJECT_TYPE ==
+         LAST_NONCALLABLE_SPEC_OBJECT_TYPE + 1);
 
   // Objects with a non-function constructor have class 'Object'.
   __ CompareObjectType(temp, temp2, temp2, JS_FUNCTION_TYPE);
   if (class_name->IsEqualTo(CStrVector("Object"))) {
     __ b(ne, is_true);
   } else {
     __ b(ne, is_false);
   }
 
   // temp now contains the constructor function. Grab the
@@ skipping 698 matching lines @@
   __ LoadRoot(scratch, Heap::kNullValueRootIndex);
   __ cmp(receiver, scratch);
   __ b(eq, &global_object);
   __ LoadRoot(scratch, Heap::kUndefinedValueRootIndex);
   __ cmp(receiver, scratch);
   __ b(eq, &global_object);
 
   // Deoptimize if the receiver is not a JS object.
   __ tst(receiver, Operand(kSmiTagMask));
   DeoptimizeIf(eq, instr->environment());
-  __ CompareObjectType(receiver, scratch, scratch, FIRST_JS_OBJECT_TYPE);
+  __ CompareObjectType(receiver, scratch, scratch, FIRST_SPEC_OBJECT_TYPE);
   DeoptimizeIf(lo, instr->environment());

[Kevin Millikin (Chromium), 2011/05/30 16:32:29]

"lo" --> "lt"

[rossberg, 2011/05/31 14:50:24]

Done.

   __ jmp(&receiver_ok);
 
   __ bind(&global_object);
   __ ldr(receiver, GlobalObjectOperand());
   __ bind(&receiver_ok);
 
   // Copy the arguments to this function possibly from the
   // adaptor frame below it.
   const uint32_t kArgumentsLimit = 1 * KB;
   __ cmp(length, Operand(kArgumentsLimit));
@@ skipping 1621 matching lines @@
     __ b(eq, true_label);
     __ JumpIfSmi(input, false_label);
     // Check for undetectable objects => true.
     __ ldr(input, FieldMemOperand(input, HeapObject::kMapOffset));
     __ ldrb(ip, FieldMemOperand(input, Map::kBitFieldOffset));
     __ tst(ip, Operand(1 << Map::kIsUndetectable));
     final_branch_condition = ne;
 
   } else if (type_name->Equals(heap()->function_symbol())) {
     __ JumpIfSmi(input, false_label);
-    __ CompareObjectType(input, input, scratch, FIRST_FUNCTION_CLASS_TYPE);
+    __ CompareObjectType(input, input, scratch,
+                         FIRST_CALLABLE_SPEC_OBJECT_TYPE);
     final_branch_condition = ge;
 
   } else if (type_name->Equals(heap()->object_symbol())) {
     __ JumpIfSmi(input, false_label);
     __ CompareRoot(input, Heap::kNullValueRootIndex);
     __ b(eq, true_label);
-    __ CompareObjectType(input, input, scratch, FIRST_JS_OBJECT_TYPE);
+    __ CompareObjectType(input, input, scratch,
+                         FIRST_NONCALLABLE_SPEC_OBJECT_TYPE);
     __ b(lo, false_label);

[Kevin Millikin (Chromium), 2011/05/30 16:32:29]

"lo" --> "lt", "hi" --> "gt" just below.

[rossberg, 2011/05/31 14:50:24]

Done.

-    __ CompareInstanceType(input, scratch, FIRST_FUNCTION_CLASS_TYPE);
-    __ b(hs, false_label);
+    __ CompareInstanceType(input, scratch, LAST_NONCALLABLE_SPEC_OBJECT_TYPE);
+    __ b(hi, false_label);
     // Check for undetectable objects => false.
     __ ldrb(ip, FieldMemOperand(input, Map::kBitFieldOffset));
     __ tst(ip, Operand(1 << Map::kIsUndetectable));
     final_branch_condition = eq;
 
   } else {
     final_branch_condition = ne;
     __ b(false_label);
     // A dead branch instruction will be generated after this point.
   }
@@ skipping 123 matching lines @@
   ASSERT(osr_pc_offset_ == -1);
   osr_pc_offset_ = masm()->pc_offset();
 }
 
 
 
 
 #undef __
 
 } }  // namespace v8::internal