[stubs] A new approach to TF stubs

src/compiler/js-intrinsic-lowering.cc

 // 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/js-intrinsic-lowering.h"
 
 #include <stack>
 
 #include "src/code-factory.h"
 #include "src/compiler/access-builder.h"
@@ skipping 65 matching lines @@
     case Runtime::kInlineStringGetLength:
       return ReduceStringGetLength(node);
     case Runtime::kInlineValueOf:
       return ReduceValueOf(node);
     case Runtime::kInlineIsMinusZero:
       return ReduceIsMinusZero(node);
     case Runtime::kInlineFixedArrayGet:
       return ReduceFixedArrayGet(node);
     case Runtime::kInlineFixedArraySet:
       return ReduceFixedArraySet(node);
-    case Runtime::kInlineGetTypeFeedbackVector:
-      return ReduceGetTypeFeedbackVector(node);
-    case Runtime::kInlineGetCallerJSFunction:
-      return ReduceGetCallerJSFunction(node);
     case Runtime::kInlineToInteger:
       return ReduceToInteger(node);
     case Runtime::kInlineToLength:
       return ReduceToLength(node);
     case Runtime::kInlineToName:
       return ReduceToName(node);
     case Runtime::kInlineToNumber:
       return ReduceToNumber(node);
     case Runtime::kInlineToObject:
       return ReduceToObject(node);
@@ skipping 352 matching lines @@
   Node* effect = NodeProperties::GetEffectInput(node);
   Node* control = NodeProperties::GetControlInput(node);
   Node* store = (graph()->NewNode(
       simplified()->StoreElement(AccessBuilder::ForFixedArrayElement()), base,
       index, value, effect, control));
   ReplaceWithValue(node, value, store);
   return Changed(store);
 }
 
 
-Reduction JSIntrinsicLowering::ReduceGetTypeFeedbackVector(Node* node) {
-  Node* func = node->InputAt(0);
-  Node* effect = NodeProperties::GetEffectInput(node);
-  Node* control = NodeProperties::GetControlInput(node);
-  FieldAccess access = AccessBuilder::ForJSFunctionSharedFunctionInfo();
-  Node* load =
-      graph()->NewNode(simplified()->LoadField(access), func, effect, control);
-  access = AccessBuilder::ForSharedFunctionInfoTypeFeedbackVector();
-  return Change(node, simplified()->LoadField(access), load, load, control);
-}
-
-
-Reduction JSIntrinsicLowering::ReduceGetCallerJSFunction(Node* node) {
-  Node* effect = NodeProperties::GetEffectInput(node);
-  Node* control = NodeProperties::GetControlInput(node);
-
-  Node* const frame_state = NodeProperties::GetFrameStateInput(node, 0);
-  Node* outer_frame = frame_state->InputAt(kFrameStateOuterStateInput);
-  if (outer_frame->opcode() == IrOpcode::kFrameState) {
-    // Use the runtime implementation to throw the appropriate error if the
-    // containing function is inlined.
-    return NoChange();
-  }
-
-  // TODO(danno): This implementation forces intrinsic lowering to happen after
-  // inlining, which is fine for now, but eventually the frame-querying logic
-  // probably should go later, e.g. in instruction selection, so that there is
-  // no phase-ordering dependency.
-  FieldAccess access = AccessBuilder::ForFrameCallerFramePtr();
-  Node* fp = graph()->NewNode(machine()->LoadFramePointer());
-  Node* next_fp =
-      graph()->NewNode(simplified()->LoadField(access), fp, effect, control);
-  return Change(node, simplified()->LoadField(AccessBuilder::ForFrameMarker()),
-                next_fp, effect, control);
-}
-
-
 Reduction JSIntrinsicLowering::ReduceThrowNotDateError(Node* node) {
   if (mode() != kDeoptimizationEnabled) return NoChange();
   Node* const frame_state = NodeProperties::GetFrameStateInput(node, 1);
   Node* const effect = NodeProperties::GetEffectInput(node);
   Node* const control = NodeProperties::GetControlInput(node);
 
   // TODO(bmeurer): Move MergeControlToEnd() to the AdvancedReducer.
   Node* deoptimize =
       graph()->NewNode(common()->Deoptimize(), frame_state, effect, control);
   NodeProperties::MergeControlToEnd(graph(), common(), deoptimize);
@@ skipping 175 matching lines @@
 }
 
 
 SimplifiedOperatorBuilder* JSIntrinsicLowering::simplified() const {
   return jsgraph()->simplified();
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8