[turbofan] Add support for eager/soft deoptimization reasons.

src/compiler/common-operator-reducer.cc

Index: src/compiler/common-operator-reducer.cc
diff --git a/src/compiler/common-operator-reducer.cc b/src/compiler/common-operator-reducer.cc
index 5c3d3d7135b7158e27f1960561f27a82332e942d..be4d802f818d06c140a4b2ac7b6b50679a3b7e99 100644
--- a/src/compiler/common-operator-reducer.cc
+++ b/src/compiler/common-operator-reducer.cc
@@ -122,6 +122,7 @@ Reduction CommonOperatorReducer::ReduceDeoptimizeConditional(Node* node) {
   DCHECK(node->opcode() == IrOpcode::kDeoptimizeIf ||
          node->opcode() == IrOpcode::kDeoptimizeUnless);
   bool condition_is_true = node->opcode() == IrOpcode::kDeoptimizeUnless;
+  DeoptimizeReason reason = DeoptimizeReasonOf(node->op());
   Node* condition = NodeProperties::GetValueInput(node, 0);
   Node* frame_state = NodeProperties::GetValueInput(node, 1);
   Node* effect = NodeProperties::GetEffectInput(node);
@@ -133,8 +134,8 @@ Reduction CommonOperatorReducer::ReduceDeoptimizeConditional(Node* node) {
   if (condition->opcode() == IrOpcode::kBooleanNot) {
     NodeProperties::ReplaceValueInput(node, condition->InputAt(0), 0);
     NodeProperties::ChangeOp(node, condition_is_true
-                                       ? common()->DeoptimizeIf()
-                                       : common()->DeoptimizeUnless());
+                                       ? common()->DeoptimizeIf(reason)
+                                       : common()->DeoptimizeUnless(reason));
     return Changed(node);
   }
   Decision const decision = DecideCondition(condition);
@@ -142,8 +143,9 @@ Reduction CommonOperatorReducer::ReduceDeoptimizeConditional(Node* node) {
   if (condition_is_true == (decision == Decision::kTrue)) {
     ReplaceWithValue(node, dead(), effect, control);
   } else {
-    control = graph()->NewNode(common()->Deoptimize(DeoptimizeKind::kEager),
-                               frame_state, effect, control);
+    control =
+        graph()->NewNode(common()->Deoptimize(DeoptimizeKind::kEager, reason),
+                         frame_state, effect, control);
     // TODO(bmeurer): This should be on the AdvancedReducer somehow.
     NodeProperties::MergeControlToEnd(graph(), common(), control);
     Revisit(graph()->end());