Avoid one repeated property lookup when computing load ICs.

src/mips/stub-cache-mips.cc

Index: src/mips/stub-cache-mips.cc
diff --git a/src/mips/stub-cache-mips.cc b/src/mips/stub-cache-mips.cc
index e2ab36d4859b23fe28d67a50061cae8acbec63e1..96c7d4d98e403122cb629abcb3516235da505042 100644
--- a/src/mips/stub-cache-mips.cc
+++ b/src/mips/stub-cache-mips.cc
@@ -1210,7 +1210,7 @@ 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);
@@ -1221,7 +1221,7 @@ Handle<Code> NamedLoadHandlerCompiler::CompileLoadGlobal(
   __ lw(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));
   }