Avoid one repeated property lookup when computing load ICs.

src/x87/stub-cache-x87.cc

Index: src/x87/stub-cache-x87.cc
diff --git a/src/x87/stub-cache-x87.cc b/src/x87/stub-cache-x87.cc
index b5a30bb74308a21d0f0a9a6f8cbd0c15ca9c21c3..0e83e7c94d58d098eb51cb55d97f6fc4ea56f6e3 100644
--- a/src/x87/stub-cache-x87.cc
+++ b/src/x87/stub-cache-x87.cc
@@ -1267,7 +1267,7 @@ 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) {