PPC/s390: [cleanup] Remove dead code from DeclareLookupSlot and rename it

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 e5d634c6b26a09e3e5ead0c379344e14d263aa69..2f5a043eaf0a7ba03c9873250739e7892a06e53f 100644
--- a/src/full-codegen/s390/full-codegen-s390.cc
+++ b/src/full-codegen/s390/full-codegen-s390.cc
@@ -741,14 +741,11 @@ void FullCodeGenerator::VisitVariableDeclaration(
 
     case VariableLocation::LOOKUP: {
       Comment cmnt(masm_, "[ VariableDeclaration");
-      __ mov(r4, Operand(variable->name()));
-      // Declaration nodes are always introduced in one of four modes.
-      DCHECK(IsDeclaredVariableMode(mode));
+      DCHECK_EQ(VAR, mode);
       DCHECK(!hole_init);
-      __ LoadSmiLiteral(r2, Smi::FromInt(0));  // Indicates no initial value.
-      __ Push(r4, r2);
-      __ Push(Smi::FromInt(variable->DeclarationPropertyAttributes()));
-      __ CallRuntime(Runtime::kDeclareLookupSlot);
+      __ mov(r4, Operand(variable->name()));
+      __ Push(r4);
+      __ CallRuntime(Runtime::kDeclareEvalVar);
       PrepareForBailoutForId(proxy->id(), BailoutState::NO_REGISTERS);
       break;
     }
@@ -799,8 +796,7 @@ void FullCodeGenerator::VisitFunctionDeclaration(
       PushOperand(r4);
       // Push initial value for function declaration.
       VisitForStackValue(declaration->fun());
-      PushOperand(Smi::FromInt(variable->DeclarationPropertyAttributes()));
-      CallRuntimeWithOperands(Runtime::kDeclareLookupSlot);
+      CallRuntimeWithOperands(Runtime::kDeclareEvalFunction);
       PrepareForBailoutForId(proxy->id(), BailoutState::NO_REGISTERS);
       break;
     }