@@ -2156,6 +2156,10 @@ fira-verbose=
Common RejectNegative Joined UInteger Var(flag_ira_verbose) Init(5)
-fira-verbose=<number> Control IRA's level of diagnostic messages.
+ftrack-subreg-liveness
+Common Var(flag_track_subreg_liveness) Init(0) Optimization
+Track subreg liveness information for IRA and LRA, enabled at -O3.
+
fivopts
Common Var(flag_ivopts) Init(1) Optimization
Optimize induction variables on trees.
@@ -689,6 +689,7 @@ static const struct default_options default_options_table[] =
{ OPT_LEVELS_3_PLUS, OPT_funswitch_loops, NULL, 1 },
{ OPT_LEVELS_3_PLUS, OPT_fvect_cost_model_, NULL, VECT_COST_MODEL_DYNAMIC },
{ OPT_LEVELS_3_PLUS, OPT_fversion_loops_for_strides, NULL, 1 },
+ { OPT_LEVELS_3_PLUS, OPT_ftrack_subreg_liveness, NULL, 1 },
/* -O3 parameters. */
{ OPT_LEVELS_3_PLUS, OPT__param_max_inline_insns_auto_, NULL, 30 },