Check elimination enabled.

R=titzer@chromium.org

Review URL: https://codereview.chromium.org/132143010

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18537 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/flag-definitions.h

@@ -304,7 +304,7 @@ DEFINE_bool(array_index_dehoisting, true,
 DEFINE_bool(analyze_environment_liveness, true,
             "analyze liveness of environment slots and zap dead values")
 DEFINE_bool(load_elimination, true, "use load elimination")
-DEFINE_bool(check_elimination, false, "use check elimination")
+DEFINE_bool(check_elimination, true, "use check elimination")
 DEFINE_bool(dead_code_elimination, true, "use dead code elimination")
 DEFINE_bool(fold_constants, true, "use constant folding")
 DEFINE_bool(trace_dead_code_elimination, false, "trace dead code elimination")