[turbofan] Escape analysis treats guard nodes as escaping.

src/compiler/escape-analysis.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/escape-analysis.h"
 
 #include <limits>
 
 #include "src/base/flags.h"
 #include "src/bootstrapper.h"
@@ skipping 694 matching lines @@
         break;
       case IrOpcode::kObjectIsSmi:
         if (!IsAllocation(rep) && SetEscaped(rep)) {
           TRACE("Setting #%d (%s) to escaped because of use by #%d (%s)\n",
                 rep->id(), rep->op()->mnemonic(), use->id(),
                 use->op()->mnemonic());
           return true;
         }
         break;
       case IrOpcode::kSelect:
+      case IrOpcode::kGuard:
         if (SetEscaped(rep)) {
           TRACE("Setting #%d (%s) to escaped because of use by #%d (%s)\n",
                 rep->id(), rep->op()->mnemonic(), use->id(),
                 use->op()->mnemonic());
           return true;
         }
         break;
       default:
         if (use->op()->EffectInputCount() == 0 &&
-            uses->op()->EffectInputCount() > 0) {
+            uses->op()->EffectInputCount() > 0 &&
+            !IrOpcode::IsJsOpcode(use->opcode())) {
           TRACE("Encountered unaccounted use by #%d (%s)\n", use->id(),
                 use->op()->mnemonic());
           UNREACHABLE();
         }
         if (SetEscaped(rep)) {
           TRACE("Setting #%d (%s) to escaped because of use by #%d (%s)\n",
                 rep->id(), rep->op()->mnemonic(), use->id(),
                 use->op()->mnemonic());
           return true;
         }
@@ skipping 790 matching lines @@
         return true;
       }
     }
   }
   return false;
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8