[turbofan] Pass deoptimization mode to intrinsic lowering.

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/compiler/access-builder.h"
 #include "src/compiler/js-graph.h"
 #include "src/compiler/node-matchers.h"
 #include "src/compiler/node-properties.h"
 #include "src/compiler/operator-properties.h"
 
 namespace v8 {
 namespace internal {
 namespace compiler {
 
-JSIntrinsicLowering::JSIntrinsicLowering(Editor* editor, JSGraph* jsgraph)
+JSIntrinsicLowering::JSIntrinsicLowering(Editor* editor, JSGraph* jsgraph,
+                                         DeoptimizationMode mode)
     : AdvancedReducer(editor),
       jsgraph_(jsgraph),
+      mode_(mode),
       simplified_(jsgraph->zone()) {}
 
 
 Reduction JSIntrinsicLowering::Reduce(Node* node) {
   if (node->opcode() != IrOpcode::kJSCallRuntime) return NoChange();
   const Runtime::Function* const f =
       Runtime::FunctionForId(CallRuntimeParametersOf(node->op()).id());
   if (f->intrinsic_type != Runtime::IntrinsicType::INLINE) return NoChange();
   switch (f->function_id) {
     case Runtime::kInlineConstructDouble:
@@ skipping 64 matching lines @@
       graph()->NewNode(machine()->Float64InsertHighWord32(),
                        graph()->NewNode(machine()->Float64InsertLowWord32(),
                                         jsgraph()->Constant(0), low),
                        high);
   ReplaceWithValue(node, value);
   return Replace(value);
 }
 
 
 Reduction JSIntrinsicLowering::ReduceDeoptimizeNow(Node* node) {
-  // TODO(jarin): This should not depend on the global flag.
-  if (!FLAG_turbo_deoptimization) return NoChange();
-
+  if (mode() != kDeoptimizationEnabled) return NoChange();
   Node* frame_state = NodeProperties::GetFrameStateInput(node, 0);
   DCHECK_EQ(frame_state->opcode(), IrOpcode::kFrameState);
 
   Node* effect = NodeProperties::GetEffectInput(node);
   Node* control = NodeProperties::GetControlInput(node);
 
   // We are making the continuation after the call dead. To
   // model this, we generate if (true) statement with deopt
   // in the true branch and continuation in the false branch.
   Node* branch =
@@ skipping 373 matching lines @@
 }
 
 
 MachineOperatorBuilder* JSIntrinsicLowering::machine() const {
   return jsgraph()->machine();
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8