[avr,applied] : Set -fsplit-wide-types-early.

Message ID a08652a9-f529-7387-f90b-4486ff03b238@gjlay.de
State New
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Series
  • [avr,applied] : Set -fsplit-wide-types-early.
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Commit Message

Georg-Johann Lay Jan. 9, 2020, 9:33 a.m.
This patch sets -fsplit-wide-types-early for avr as it appears that the 
old placement of that pass gives better code for that target.

Applied as r380033.

Johann

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

Patch

Index: common/config/avr/avr-common.c
===================================================================
--- common/config/avr/avr-common.c
+++ common/config/avr/avr-common.c
@@ -40,6 +40,8 @@  static const struct default_options avr_
      { 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