[cleanup] Remove dead code from DeclareLookupSlot and rename it

src/full-codegen/mips/full-codegen-mips.cc

Index: src/full-codegen/mips/full-codegen-mips.cc
diff --git a/src/full-codegen/mips/full-codegen-mips.cc b/src/full-codegen/mips/full-codegen-mips.cc
index d921226a483496933388a34d8d55b8b4438a9264..ad018aa49814d41b7968b849bd9b57b59b03fedd 100644
--- a/src/full-codegen/mips/full-codegen-mips.cc
+++ b/src/full-codegen/mips/full-codegen-mips.cc
@@ -797,15 +797,11 @@ void FullCodeGenerator::VisitVariableDeclaration(
 
     case VariableLocation::LOOKUP: {
       Comment cmnt(masm_, "[ VariableDeclaration");
-      __ li(a2, Operand(variable->name()));
-      // Declaration nodes are always introduced in one of four modes.
-      DCHECK(IsDeclaredVariableMode(mode));
+      DCHECK_EQ(VAR, mode);
       DCHECK(!hole_init);
-      DCHECK(Smi::FromInt(0) == 0);
-      __ mov(a0, zero_reg);  // Smi::FromInt(0) indicates no initial value.
-      __ Push(a2, a0);
-      __ Push(Smi::FromInt(variable->DeclarationPropertyAttributes()));
-      __ CallRuntime(Runtime::kDeclareLookupSlot);
+      __ li(a2, Operand(variable->name()));
+      __ Push(a2);
+      __ CallRuntime(Runtime::kDeclareEvalVar);
       PrepareForBailoutForId(proxy->id(), BailoutState::NO_REGISTERS);
       break;
     }
@@ -862,8 +858,7 @@ void FullCodeGenerator::VisitFunctionDeclaration(
       PushOperand(a2);
       // 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;
     }