[turbofan] Replace uninitialized JSConstruct nodes with SOFT deopt.

src/compiler/js-type-hint-lowering.cc

 // Copyright 2017 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-type-hint-lowering.h"
 
 #include "src/compiler/js-graph.h"
 #include "src/compiler/operator-properties.h"
 #include "src/compiler/simplified-operator.h"
 #include "src/feedback-vector.h"
@@ skipping 272 matching lines @@
   DCHECK(!slot.IsInvalid());
   CallICNexus nexus(feedback_vector(), slot);
   if (Node* node = TryBuildSoftDeopt(
           nexus, effect, control,
           DeoptimizeReason::kInsufficientTypeFeedbackForCall)) {
     return Reduction(node);
   }
   return Reduction();
 }
 
+Reduction JSTypeHintLowering::ReduceConstructOperation(
+    const Operator* op, Node* const* args, int arg_count, Node* effect,
+    Node* control, FeedbackSlot slot) const {
+  DCHECK_EQ(IrOpcode::kJSConstruct, op->opcode());
+  DCHECK(!slot.IsInvalid());
+  CallICNexus nexus(feedback_vector(), slot);
+  if (Node* node = TryBuildSoftDeopt(
+          nexus, effect, control,
+          DeoptimizeReason::kInsufficientTypeFeedbackForConstruct)) {
+    return Reduction(node);
+  }
+  return Reduction();
+}
+
 Reduction JSTypeHintLowering::ReduceLoadNamedOperation(
     const Operator* op, Node* obj, Node* effect, Node* control,
     FeedbackSlot slot) const {
   DCHECK_EQ(IrOpcode::kJSLoadNamed, op->opcode());
   DCHECK(!slot.IsInvalid());
   LoadICNexus nexus(feedback_vector(), slot);
   if (Node* node = TryBuildSoftDeopt(
           nexus, effect, control,
           DeoptimizeReason::kInsufficientTypeFeedbackForGenericNamedAccess)) {
     return Reduction(node);
@@ skipping 54 matching lines @@
     Node* frame_state = NodeProperties::FindFrameStateBefore(deoptimize);
     deoptimize->ReplaceInput(0, frame_state);
     return deoptimize;
   }
   return nullptr;
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8