[turbofan] Treat typeof operators as escaping uses.

For now we treat simplified ObjectIsFoo operators as escaping uses when
it comes to escape analysis. Eventually we want to handle them in the
associated reducer, just like we do with ObjectIsSmi.

R=jarin@chromium.org

Review-Url: https://codereview.chromium.org/2002573002
Cr-Commit-Position: refs/heads/master@{#36404}

src/compiler/escape-analysis.cc

@@ -794,6 +794,12 @@ bool EscapeStatusAnalysis::CheckUsesForEscape(Node* uses, Node* rep,
         break;
       case IrOpcode::kSelect:
       case IrOpcode::kTypeGuard:
+      // TODO(mstarzinger): The following list of operators will eventually be
+      // handled by the EscapeAnalysisReducer (similar to ObjectIsSmi).
+      case IrOpcode::kObjectIsCallable:
+      case IrOpcode::kObjectIsNumber:
+      case IrOpcode::kObjectIsString:
+      case IrOpcode::kObjectIsUndetectable:
         if (SetEscaped(rep)) {
           TRACE("Setting #%d (%s) to escaped because of use by #%d (%s)\n",
                 rep->id(), rep->op()->mnemonic(), use->id(),