Revert of Implement Fast Accessor Builder

src/compiler/fast-accessor-assembler.cc

Index: src/compiler/fast-accessor-assembler.cc
diff --git a/src/compiler/fast-accessor-assembler.cc b/src/compiler/fast-accessor-assembler.cc
deleted file mode 100644
index 5adabb23ac5fc034265320c73126883411845c99..0000000000000000000000000000000000000000
--- a/src/compiler/fast-accessor-assembler.cc
+++ /dev/null
@@ -1,221 +0,0 @@
-// Copyright 2015 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/compiler/fast-accessor-assembler.h"
-
-#include "src/base/logging.h"
-#include "src/compiler/graph.h"
-#include "src/compiler/linkage.h"
-#include "src/compiler/pipeline.h"
-#include "src/compiler/raw-machine-assembler.h"
-#include "src/compiler/schedule.h"
-#include "src/compiler/verifier.h"
-#include "src/handles-inl.h"
-#include "src/objects.h"  // For FAA::GetInternalField impl.
-
-namespace v8 {
-namespace internal {
-namespace compiler {
-
-FastAccessorAssembler::FastAccessorAssembler(Isolate* isolate)
-    : zone_(),
-      assembler_(new RawMachineAssembler(
-          isolate, new (zone()) Graph(zone()),
-          Linkage::GetJSCallDescriptor(&zone_, false, 1,
-                                       CallDescriptor::kNoFlags))),
-      state_(kBuilding) {}
-
-
-FastAccessorAssembler::~FastAccessorAssembler() {}
-
-
-FastAccessorAssembler::ValueId FastAccessorAssembler::IntegerConstant(
-    int const_value) {
-  CHECK_EQ(kBuilding, state_);
-  return FromRaw(assembler_->NumberConstant(const_value));
-}
-
-
-FastAccessorAssembler::ValueId FastAccessorAssembler::GetReceiver() {
-  CHECK_EQ(kBuilding, state_);
-
-  // For JS call descriptor, the receiver is parameter 0. If we use other
-  // call descriptors, this may or may not hold. So let's check.
-  CHECK(assembler_->call_descriptor()->IsJSFunctionCall());
-  return FromRaw(assembler_->Parameter(0));
-}
-
-
-FastAccessorAssembler::ValueId FastAccessorAssembler::LoadInternalField(
-    ValueId value, int field_no) {
-  CHECK_EQ(kBuilding, state_);
-  // Determine the 'value' object's instance type.
-  Node* object_map =
-      assembler_->Load(kMachPtr, FromId(value),
-                       assembler_->IntPtrConstant(
-                           Internals::kHeapObjectMapOffset - kHeapObjectTag));
-  Node* instance_type = assembler_->WordAnd(
-      assembler_->Load(
-          kMachUint16, object_map,
-          assembler_->IntPtrConstant(
-              Internals::kMapInstanceTypeAndBitFieldOffset - kHeapObjectTag)),
-      assembler_->IntPtrConstant(0xff));
-
-  // Check whether we have a proper JSObject.
-  RawMachineLabel is_jsobject, is_not_jsobject, merge;
-  assembler_->Branch(
-      assembler_->WordEqual(
-          instance_type, assembler_->IntPtrConstant(Internals::kJSObjectType)),
-      &is_jsobject, &is_not_jsobject);
-
-  // JSObject? Then load the internal field field_no.
-  assembler_->Bind(&is_jsobject);
-  Node* internal_field = assembler_->Load(
-      kMachPtr, FromId(value),
-      assembler_->IntPtrConstant(JSObject::kHeaderSize - kHeapObjectTag +
-                                 kPointerSize * field_no));
-  assembler_->Goto(&merge);
-
-  // No JSObject? Return undefined.
-  // TODO(vogelheim): Check whether this is the appropriate action, or whether
-  //                  the method should take a label instead.
-  assembler_->Bind(&is_not_jsobject);
-  Node* fail_value = assembler_->UndefinedConstant();
-  assembler_->Goto(&merge);
-
-  // Return.
-  assembler_->Bind(&merge);
-  Node* phi = assembler_->Phi(kMachAnyTagged, internal_field, fail_value);
-  return FromRaw(phi);
-}
-
-
-FastAccessorAssembler::ValueId FastAccessorAssembler::LoadValue(ValueId value,
-                                                                int offset) {
-  CHECK_EQ(kBuilding, state_);
-  return FromRaw(assembler_->Load(kMachIntPtr, FromId(value),
-                                  assembler_->IntPtrConstant(offset)));
-}
-
-
-FastAccessorAssembler::ValueId FastAccessorAssembler::LoadObject(ValueId value,
-                                                                 int offset) {
-  CHECK_EQ(kBuilding, state_);
-  return FromRaw(assembler_->Load(
-      kMachAnyTagged, assembler_->Load(kMachPtr, FromId(value),
-                                       assembler_->IntPtrConstant(offset))));
-}
-
-
-void FastAccessorAssembler::ReturnValue(ValueId value) {
-  CHECK_EQ(kBuilding, state_);
-  assembler_->Return(FromId(value));
-}
-
-
-void FastAccessorAssembler::CheckFlagSetOrReturnNull(ValueId value, int mask) {
-  CHECK_EQ(kBuilding, state_);
-  RawMachineLabel pass, fail;
-  assembler_->Branch(
-      assembler_->Word32Equal(
-          assembler_->Word32And(FromId(value), assembler_->Int32Constant(mask)),
-          assembler_->Int32Constant(0)),
-      &pass, &fail);
-  assembler_->Bind(&fail);
-  assembler_->Return(assembler_->NullConstant());
-  assembler_->Bind(&pass);
-}
-
-
-void FastAccessorAssembler::CheckNotZeroOrReturnNull(ValueId value) {
-  CHECK_EQ(kBuilding, state_);
-  RawMachineLabel is_null, not_null;
-  assembler_->Branch(
-      assembler_->IntPtrEqual(FromId(value), assembler_->IntPtrConstant(0)),
-      &is_null, &not_null);
-  assembler_->Bind(&is_null);
-  assembler_->Return(assembler_->NullConstant());
-  assembler_->Bind(&not_null);
-}
-
-
-FastAccessorAssembler::LabelId FastAccessorAssembler::MakeLabel() {
-  CHECK_EQ(kBuilding, state_);
-  RawMachineLabel* label =
-      new (zone()->New(sizeof(RawMachineLabel))) RawMachineLabel;
-  return FromRaw(label);
-}
-
-
-void FastAccessorAssembler::SetLabel(LabelId label_id) {
-  CHECK_EQ(kBuilding, state_);
-  assembler_->Bind(FromId(label_id));
-}
-
-
-void FastAccessorAssembler::CheckNotZeroOrJump(ValueId value_id,
-                                               LabelId label_id) {
-  CHECK_EQ(kBuilding, state_);
-  RawMachineLabel pass;
-  assembler_->Branch(
-      assembler_->IntPtrEqual(FromId(value_id), assembler_->IntPtrConstant(0)),
-      &pass, FromId(label_id));
-  assembler_->Bind(&pass);
-}
-
-
-MaybeHandle<Code> FastAccessorAssembler::Build() {
-  CHECK_EQ(kBuilding, state_);
-
-  // Cleanup: We no longer need this.
-  nodes_.clear();
-  labels_.clear();
-
-  // Export the schedule and call the compiler.
-  CompilationInfo info("FastAccessorAssembler", assembler_->isolate(), zone());
-  Schedule* schedule = assembler_->Export();
-
-  // TODO(vogelheim): Pipeline should have a dedicated entry point for this
-  //                  assembler.
-  MaybeHandle<Code> code = Pipeline::GenerateCodeForTesting(
-      &info, assembler_->call_descriptor(), assembler_->graph(), schedule);
-
-  // Update state & return.
-  state_ = !code.is_null() ? kBuilt : kError;
-  return code;
-}
-
-
-FastAccessorAssembler::ValueId FastAccessorAssembler::FromRaw(Node* node) {
-  nodes_.push_back(node);
-  ValueId value = {nodes_.size() - 1};
-  return value;
-}
-
-
-FastAccessorAssembler::LabelId FastAccessorAssembler::FromRaw(
-    RawMachineLabel* label) {
-  labels_.push_back(label);
-  LabelId label_id = {labels_.size() - 1};
-  return label_id;
-}
-
-
-Node* FastAccessorAssembler::FromId(ValueId value) const {
-  CHECK_LT(value.value_id, nodes_.size());
-  CHECK_NOT_NULL(nodes_.at(value.value_id));
-  return nodes_.at(value.value_id);
-}
-
-
-RawMachineLabel* FastAccessorAssembler::FromId(LabelId label) const {
-  CHECK_LT(label.label_id, labels_.size());
-  CHECK_NOT_NULL(labels_.at(label.label_id));
-  return labels_.at(label.label_id);
-}
-
-
-}  // namespace compiler
-}  // namespace internal
-}  // namespace v8