Add HArrayBufferNotNeutered instruction

src/arm64/lithium-codegen-arm64.cc

 // Copyright 2013 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/arm64/lithium-codegen-arm64.h"
 #include "src/arm64/lithium-gap-resolver-arm64.h"
 #include "src/base/bits.h"
 #include "src/code-factory.h"
@@ skipping 2211 matching lines @@
 }
 
 
 void LCodeGen::DoCheckSmi(LCheckSmi* instr) {
   Register value = ToRegister(instr->value());
   DCHECK(!instr->result() || ToRegister(instr->result()).Is(value));
   DeoptimizeIfNotSmi(value, instr, Deoptimizer::kNotASmi);
 }
 
 
+void LCodeGen::DoCheckArrayBufferNotNeutered(
+    LCheckArrayBufferNotNeutered* instr) {
+  UseScratchRegisterScope temps(masm());
+  Register view = ToRegister(instr->view());
+  Register scratch = temps.AcquireX();
+
+  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 = ToRegister(instr->temp());
 
   __ Ldr(scratch, FieldMemOperand(input, HeapObject::kMapOffset));
   __ Ldrb(scratch, FieldMemOperand(scratch, Map::kInstanceTypeOffset));
 
   if (instr->hydrogen()->is_interval_check()) {
     InstanceType first, last;
     instr->hydrogen()->GetCheckInterval(&first, &last);
@@ skipping 3786 matching lines @@
   Handle<ScopeInfo> scope_info = instr->scope_info();
   __ Push(scope_info);
   __ Push(ToRegister(instr->function()));
   CallRuntime(Runtime::kPushBlockContext, 2, instr);
   RecordSafepoint(Safepoint::kNoLazyDeopt);
 }
 
 
 
 } }  // namespace v8::internal