Add HArrayBufferNotNeutered instruction

src/arm/lithium-codegen-arm.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"
 
 #include "src/arm/lithium-codegen-arm.h"
 #include "src/arm/lithium-gap-resolver-arm.h"
 #include "src/base/bits.h"
 #include "src/code-factory.h"
@@ skipping 5136 matching lines @@
 
 void LCodeGen::DoCheckNonSmi(LCheckNonSmi* instr) {
   if (!instr->hydrogen()->value()->type().IsHeapObject()) {
     LOperand* input = instr->value();
     __ SmiTst(ToRegister(input));
     DeoptimizeIf(eq, instr, Deoptimizer::kSmi);
   }
 }
 
 
+void LCodeGen::DoCheckArrayBufferNotNeutered(
+    LCheckArrayBufferNotNeutered* instr) {
+  Register view = ToRegister(instr->view());
+  Register scratch = scratch0();
+
+  Label has_no_buffer;
+  __ ldr(scratch, FieldMemOperand(view, JSArrayBufferView::kBufferOffset));
+  __ JumpIfSmi(scratch, &has_no_buffer);
+  __ ldr(scratch, FieldMemOperand(scratch, JSArrayBuffer::kBitFieldOffset));
+  __ tst(scratch, Operand(1 << JSArrayBuffer::WasNeutered::kShift));
+  DeoptimizeIf(ne, instr, Deoptimizer::kOutOfBounds);
+
+  __ bind(&has_no_buffer);
+}
+
+
 void LCodeGen::DoCheckInstanceType(LCheckInstanceType* instr) {
   Register input = ToRegister(instr->value());
   Register scratch = scratch0();
 
   __ ldr(scratch, FieldMemOperand(input, HeapObject::kMapOffset));
   __ ldrb(scratch, FieldMemOperand(scratch, Map::kInstanceTypeOffset));
 
   if (instr->hydrogen()->is_interval_check()) {
     InstanceType first;
     InstanceType last;
@@ skipping 760 matching lines @@
   __ Push(scope_info);
   __ push(ToRegister(instr->function()));
   CallRuntime(Runtime::kPushBlockContext, 2, instr);
   RecordSafepoint(Safepoint::kNoLazyDeopt);
 }
 
 
 #undef __
 
 } }  // namespace v8::internal