Add HArrayBufferNotNeutered instruction

src/x87/lithium-codegen-x87.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_X87
 
 #include "src/base/bits.h"
 #include "src/code-factory.h"
@@ skipping 5458 matching lines @@
 
 void LCodeGen::DoCheckNonSmi(LCheckNonSmi* instr) {
   if (!instr->hydrogen()->value()->type().IsHeapObject()) {
     LOperand* input = instr->value();
     __ test(ToOperand(input), Immediate(kSmiTagMask));
     DeoptimizeIf(zero, instr, Deoptimizer::kSmi);
   }
 }
 
 
+void LCodeGen::DoCheckArrayBufferNotNeutered(
+    LCheckArrayBufferNotNeutered* instr) {
+  Register view = ToRegister(instr->view());
+  Register scratch = ToRegister(instr->scratch());
+
+  Label has_no_buffer;
+  __ mov(scratch, FieldOperand(view, JSArrayBufferView::kBufferOffset));
+  __ JumpIfSmi(scratch, &has_no_buffer);
+  __ test_b(FieldOperand(scratch, JSArrayBuffer::kBitFieldOffset),
+            1 << JSArrayBuffer::WasNeutered::kShift);
+  DeoptimizeIf(not_zero, instr, Deoptimizer::kOutOfBounds);
+
+  __ bind(&has_no_buffer);
+}
+
+
 void LCodeGen::DoCheckInstanceType(LCheckInstanceType* instr) {
   Register input = ToRegister(instr->value());
   Register temp = ToRegister(instr->temp());
 
   __ mov(temp, FieldOperand(input, HeapObject::kMapOffset));
 
   if (instr->hydrogen()->is_interval_check()) {
     InstanceType first;
     InstanceType last;
     instr->hydrogen()->GetCheckInterval(&first, &last);
@@ skipping 858 matching lines @@
   CallRuntime(Runtime::kPushBlockContext, 2, instr);
   RecordSafepoint(Safepoint::kNoLazyDeopt);
 }
 
 
 #undef __
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_X87