Adapt Danno's Track Allocation Info idea to fast literals. When allocating a literal array,

src/flag-definitions.h

Index: src/flag-definitions.h
diff --git a/src/flag-definitions.h b/src/flag-definitions.h
index 149c65d1a3a68c754ece9c69d933b00b724ddb84..bb6d81abab3a4af126862ca30c4e4d7ac6705425 100644
--- a/src/flag-definitions.h
+++ b/src/flag-definitions.h
@@ -209,7 +209,8 @@ DEFINE_bool(array_index_dehoisting, true,
             "perform array index dehoisting")
 DEFINE_bool(dead_code_elimination, true, "use dead code elimination")
 DEFINE_bool(trace_dead_code_elimination, false, "trace dead code elimination")
-
+DEFINE_bool(use_allocation_site_info, true,

[danno, 2013/01/04 08:50:55]

how about just "track_allocation_sites"

[mvstanton, 2013/01/04 12:07:52]

Done.

+            "Use allocation site info to reduce transitions")
 DEFINE_bool(trace_osr, false, "trace on-stack replacement")
 DEFINE_int(stress_runs, 0, "number of stress runs")
 DEFINE_bool(optimize_closures, true, "optimize closures")