[turbofan] Implement top-level lookup slot declaration.

src/full-codegen/s390/full-codegen-s390.cc

Index: src/full-codegen/s390/full-codegen-s390.cc
diff --git a/src/full-codegen/s390/full-codegen-s390.cc b/src/full-codegen/s390/full-codegen-s390.cc
index 2d0a08bbdfc295255ac17868d0b0f143c765abee..776f8d9ddcebd20b734d2f002a5212b9b7f52bbf 100644
--- a/src/full-codegen/s390/full-codegen-s390.cc
+++ b/src/full-codegen/s390/full-codegen-s390.cc
@@ -752,6 +752,7 @@ void FullCodeGenerator::VisitVariableDeclaration(
       __ Push(r4, r2);
       __ Push(Smi::FromInt(variable->DeclarationPropertyAttributes()));
       __ CallRuntime(Runtime::kDeclareLookupSlot);
+      PrepareForBailoutForId(proxy->id(), NO_REGISTERS);
       break;
     }
   }
@@ -803,6 +804,7 @@ void FullCodeGenerator::VisitFunctionDeclaration(
       VisitForStackValue(declaration->fun());
       PushOperand(Smi::FromInt(variable->DeclarationPropertyAttributes()));
       CallRuntimeWithOperands(Runtime::kDeclareLookupSlot);
+      PrepareForBailoutForId(proxy->id(), NO_REGISTERS);
       break;
     }
   }