[turbofan] Ship type feedback for binary operators.

R=jarin@chromium.org
BUG=v8:4583

Review-Url: https://codereview.chromium.org/2146443003
Cr-Commit-Position: refs/heads/master@{#37697}

src/flag-definitions.h

@@ -423,7 +423,6 @@ DEFINE_BOOL(omit_map_checks_for_leaf_maps, true,
 // Flags for TurboFan.
 DEFINE_BOOL(turbo, false, "enable TurboFan compiler")
 DEFINE_IMPLICATION(turbo, turbo_asm_deoptimization)
-DEFINE_IMPLICATION(turbo, turbo_type_feedback)
 DEFINE_IMPLICATION(turbo, turbo_store_elimination)
 DEFINE_BOOL(turbo_shipping, true, "enable TurboFan compiler on subset")
 DEFINE_BOOL(turbo_from_bytecode, false, "enable building graphs from bytecode")
@@ -452,7 +451,7 @@ DEFINE_BOOL(turbo_stats, false, "print TurboFan statistics")
 DEFINE_BOOL(turbo_stats_nvp, false,
             "print TurboFan statistics in machine-readable format")
 DEFINE_BOOL(turbo_splitting, true, "split nodes during scheduling in TurboFan")
-DEFINE_BOOL(turbo_type_feedback, false,
+DEFINE_BOOL(turbo_type_feedback, true,
             "use typed feedback for representation inference in Turbofan")
 DEFINE_BOOL(turbo_source_positions, false,
             "track source code positions when building TurboFan IR")