[turbofan] reenable: extend escape analysis to reduce CheckMaps

R=bmeurer@chromium.org

Review-Url: https://codereview.chromium.org/2803643004
Cr-Commit-Position: refs/heads/master@{#44461}

src/compiler/escape-analysis.cc

@@ -1529,7 +1529,6 @@ void EscapeAnalysis::ProcessCheckMaps(Node* node) {
   DCHECK_EQ(node->opcode(), IrOpcode::kCheckMaps);
   ForwardVirtualState(node);
   Node* checked = ResolveReplacement(NodeProperties::GetValueInput(node, 0));
-  if (FLAG_turbo_experimental) {
   VirtualState* state = virtual_states_[node->id()];
   if (VirtualObject* object = GetVirtualObject(state, checked)) {
     if (!object->IsTracked()) {
@@ -1552,13 +1551,11 @@ void EscapeAnalysis::ProcessCheckMaps(Node* node) {
       if (value->opcode() == IrOpcode::kHeapConstant &&
           params.maps().contains(ZoneHandleSet<Map>(
               Handle<Map>::cast(OpParameter<Handle<HeapObject>>(value))))) {
-          TRACE("CheckMaps #%i seems to be redundant (until now).\n",
-                node->id());
+        TRACE("CheckMaps #%i seems to be redundant (until now).\n", node->id());
         return;
       }
     }
   }
-  }
   if (status_analysis_->SetEscaped(node)) {
     TRACE("Setting #%d (%s) to escaped (checking #%i)\n", node->id(),
           node->op()->mnemonic(), checked->id());