Avoid one repeated property lookup when computing load ICs.

src/ia32/stub-cache-ia32.cc

Index: src/ia32/stub-cache-ia32.cc
diff --git a/src/ia32/stub-cache-ia32.cc b/src/ia32/stub-cache-ia32.cc
index 1f012656f4d1775bf24cdcbe4756aeac4ec3c9de..ca25d96fb003c3d05696fe117d31531718ca3a31 100644
--- a/src/ia32/stub-cache-ia32.cc
+++ b/src/ia32/stub-cache-ia32.cc
@@ -1245,7 +1245,7 @@ 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);
@@ -1259,7 +1259,7 @@ Handle<Code> NamedLoadHandlerCompiler::CompileLoadGlobal(
   }
 
   // Check for deleted property if property can actually be deleted.
-  if (!is_dont_delete) {
+  if (is_configurable) {
     __ cmp(result, factory()->the_hole_value());
     __ j(equal, &miss);
   } else if (FLAG_debug_code) {