avr-common.c (avr_option_optimization_table): Set -fsplit-wide-types-early.

	* common/config/avr/avr-common.c (avr_option_optimization_table)
	[OPT_LEVELS_1_PLUS]: Set -fsplit-wide-types-early.

From-SVN: r280033

gcc/ChangeLog

+2020-01-09  Georg-Johann Lay  <avr@gjlay.de>
+
+	* common/config/avr/avr-common.c (avr_option_optimization_table)
+	[OPT_LEVELS_1_PLUS]: Set -fsplit-wide-types-early.
+
 2020-01-09  Martin Liska  <mliska@suse.cz>
 
 	* cgraphclones.c (symbol_table::materialize_all_clones):

gcc/common/config/avr/avr-common.c

@@ -40,6 +40,8 @@ static const struct default_options avr_option_optimization_table[] =
     { OPT_LEVELS_ALL, OPT_fcaller_saves, NULL, 0 },
     { OPT_LEVELS_1_PLUS_NOT_DEBUG, OPT_mgas_isr_prologues, NULL, 1 },
     { OPT_LEVELS_1_PLUS, OPT_mmain_is_OS_task, NULL, 1 },
+    // Stick to the "old" placement of the subreg lowering pass.
+    { OPT_LEVELS_1_PLUS, OPT_fsplit_wide_types_early, NULL, 1 },
     /* Allow optimizer to introduce store data races. This used to be the
        default -- it was changed because bigger targets did not see any
        performance decrease. For the AVR though, disallowing data races