Revert of [strong] Implement strong mode restrictions on property access

src/x64/full-codegen-x64.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/v8.h"
 
 #if V8_TARGET_ARCH_X64
 
 #include "src/code-factory.h"
 #include "src/code-stubs.h"
@@ skipping 2178 matching lines @@
       __ LoadRoot(load_name, Heap::knext_stringRootIndex);
       __ Push(load_name);                           // "next"
       __ Push(Operand(rsp, 2 * kPointerSize));      // iter
       __ Push(rax);                                 // received
 
       // result = receiver[f](arg);
       __ bind(&l_call);
       __ movp(load_receiver, Operand(rsp, kPointerSize));
       __ Move(LoadDescriptor::SlotRegister(),
               SmiFromSlot(expr->KeyedLoadFeedbackSlot()));
-      Handle<Code> ic = CodeFactory::KeyedLoadIC(isolate(), SLOPPY).code();
+      Handle<Code> ic = CodeFactory::KeyedLoadIC(isolate()).code();
       CallIC(ic, TypeFeedbackId::None());
       __ movp(rdi, rax);
       __ movp(Operand(rsp, 2 * kPointerSize), rdi);
       CallFunctionStub stub(isolate(), 1, CALL_AS_METHOD);
       __ CallStub(&stub);
 
       __ movp(rsi, Operand(rbp, StandardFrameConstants::kContextOffset));
       __ Drop(1);  // The function is still on the stack; drop it.
 
       // if (!result.done) goto l_try;
@@ skipping 147 matching lines @@
 
 
 void FullCodeGenerator::EmitNamedPropertyLoad(Property* prop) {
   SetSourcePosition(prop->position());
   Literal* key = prop->key()->AsLiteral();
   DCHECK(!prop->IsSuperAccess());
 
   __ Move(LoadDescriptor::NameRegister(), key->value());
   __ Move(LoadDescriptor::SlotRegister(),
           SmiFromSlot(prop->PropertyFeedbackSlot()));
-  CallLoadIC(NOT_CONTEXTUAL, language_mode());
+  CallLoadIC(NOT_CONTEXTUAL);
 }
 
 
 void FullCodeGenerator::EmitNamedSuperPropertyLoad(Property* prop) {
   // Stack: receiver, home_object
   SetSourcePosition(prop->position());
   Literal* key = prop->key()->AsLiteral();
   DCHECK(!key->value()->IsSmi());
   DCHECK(prop->IsSuperAccess());
 
   __ Push(key->value());
-  __ Push(Smi::FromInt(language_mode()));
-  __ CallRuntime(Runtime::kLoadFromSuper, 4);
+  __ CallRuntime(Runtime::kLoadFromSuper, 3);
 }
 
 
 void FullCodeGenerator::EmitKeyedPropertyLoad(Property* prop) {
   SetSourcePosition(prop->position());
-  Handle<Code> ic = CodeFactory::KeyedLoadIC(isolate(), language_mode()).code();
+  Handle<Code> ic = CodeFactory::KeyedLoadIC(isolate()).code();
   __ Move(LoadDescriptor::SlotRegister(),
           SmiFromSlot(prop->PropertyFeedbackSlot()));
   CallIC(ic);
 }
 
 
 void FullCodeGenerator::EmitKeyedSuperPropertyLoad(Property* prop) {
   // Stack: receiver, home_object, key.
-  __ Push(Smi::FromInt(language_mode()));
   SetSourcePosition(prop->position());
 
-  __ CallRuntime(Runtime::kLoadKeyedFromSuper, 4);
+  __ CallRuntime(Runtime::kLoadKeyedFromSuper, 3);
 }
 
 
 void FullCodeGenerator::EmitInlineSmiBinaryOp(BinaryOperation* expr,
                                               Token::Value op,
                                               Expression* left,
                                               Expression* right) {
   // Do combined smi check of the operands. Left operand is on the
   // stack (popped into rdx). Right operand is in rax but moved into
   // rcx to make the shifts easier.
@@ skipping 475 matching lines @@
   Literal* key = prop->key()->AsLiteral();
   DCHECK(!key->value()->IsSmi());
   // Load the function from the receiver.
   SuperPropertyReference* super_ref = prop->obj()->AsSuperPropertyReference();
   VisitForStackValue(super_ref->home_object());
   VisitForAccumulatorValue(super_ref->this_var());
   __ Push(rax);
   __ Push(rax);
   __ Push(Operand(rsp, kPointerSize * 2));
   __ Push(key->value());
-  __ Push(Smi::FromInt(language_mode()));
 
   // Stack here:
   //  - home_object
   //  - this (receiver)
   //  - this (receiver) <-- LoadFromSuper will pop here and below.
   //  - home_object
   //  - key
-  //  - language_mode
-  __ CallRuntime(Runtime::kLoadFromSuper, 4);
+  __ CallRuntime(Runtime::kLoadFromSuper, 3);
 
   // Replace home_object with target function.
   __ movp(Operand(rsp, kPointerSize), rax);
 
   // Stack here:
   // - target function
   // - this (receiver)
   EmitCall(expr, CallICState::METHOD);
 }
 
@@ skipping 29 matching lines @@
 
   SetSourcePosition(prop->position());
   // Load the function from the receiver.
   SuperPropertyReference* super_ref = prop->obj()->AsSuperPropertyReference();
   VisitForStackValue(super_ref->home_object());
   VisitForAccumulatorValue(super_ref->this_var());
   __ Push(rax);
   __ Push(rax);
   __ Push(Operand(rsp, kPointerSize * 2));
   VisitForStackValue(prop->key());
-  __ Push(Smi::FromInt(language_mode()));
 
   // Stack here:
   //  - home_object
   //  - this (receiver)
   //  - this (receiver) <-- LoadKeyedFromSuper will pop here and below.
   //  - home_object
   //  - key
-  //  - language_mode
-  __ CallRuntime(Runtime::kLoadKeyedFromSuper, 4);
+  __ CallRuntime(Runtime::kLoadKeyedFromSuper, 3);
 
   // Replace home_object with target function.
   __ movp(Operand(rsp, kPointerSize), rax);
 
   // Stack here:
   // - target function
   // - this (receiver)
   EmitCall(expr, CallICState::METHOD);
 }
 
@@ skipping 2536 matching lines @@
             Assembler::target_address_at(call_target_address,
                                          unoptimized_code));
   return OSR_AFTER_STACK_CHECK;
 }
 
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_X64