Various cleanups in check elimination.

src/ia32/lithium-codegen-ia32.cc

Index: src/ia32/lithium-codegen-ia32.cc
diff --git a/src/ia32/lithium-codegen-ia32.cc b/src/ia32/lithium-codegen-ia32.cc
index b12d44ec1b4494cb13b2f02d3486769c1c1afd6e..1f90a4a5a5efe979fba450898a2f3f9bd3599d0f 100644
--- a/src/ia32/lithium-codegen-ia32.cc
+++ b/src/ia32/lithium-codegen-ia32.cc
@@ -5606,15 +5606,15 @@ void LCodeGen::DoCheckMaps(LCheckMaps* instr) {
     __ bind(deferred->check_maps());
   }
 
-  const UniqueSet<Map>* map_set = instr->hydrogen()->map_set();
+  const UniqueSet<Map>* maps = instr->hydrogen()->maps();
   Label success;
-  for (int i = 0; i < map_set->size() - 1; i++) {
-    Handle<Map> map = map_set->at(i).handle();
+  for (int i = 0; i < maps->size() - 1; i++) {
+    Handle<Map> map = maps->at(i).handle();
     __ CompareMap(reg, map);
     __ j(equal, &success, Label::kNear);
   }
 
-  Handle<Map> map = map_set->at(map_set->size() - 1).handle();
+  Handle<Map> map = maps->at(maps->size() - 1).handle();
   __ CompareMap(reg, map);
   if (instr->hydrogen()->has_migration_target()) {
     __ j(not_equal, deferred->entry());