Avoid one repeated property lookup when computing load ICs.

src/mips64/stub-cache-mips64.cc

Index: src/mips64/stub-cache-mips64.cc
diff --git a/src/mips64/stub-cache-mips64.cc b/src/mips64/stub-cache-mips64.cc
index 25e2823ffb4d116811ea3f4c00eaa68f4d84a396..ab891823426c1d8564f8d7522c3c6b6e376de3f6 100644
--- a/src/mips64/stub-cache-mips64.cc
+++ b/src/mips64/stub-cache-mips64.cc
@@ -1211,7 +1211,7 @@ void NamedLoadHandlerCompiler::GenerateLoadViaGetter(
 
 
 Handle<Code> NamedLoadHandlerCompiler::CompileLoadGlobal(
-    Handle<PropertyCell> cell, Handle<Name> name, bool is_dont_delete) {
+    Handle<PropertyCell> cell, Handle<Name> name, bool is_configurable) {
   Label miss;
 
   FrontendHeader(receiver(), name, &miss);
@@ -1222,7 +1222,7 @@ Handle<Code> NamedLoadHandlerCompiler::CompileLoadGlobal(
   __ ld(result, FieldMemOperand(result, Cell::kValueOffset));
 
   // Check for deleted property if property can actually be deleted.
-  if (!is_dont_delete) {
+  if (is_configurable) {
     __ LoadRoot(at, Heap::kTheHoleValueRootIndex);
     __ Branch(&miss, eq, result, Operand(at));
   }