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arc: Don't use if-conversion when optimizing for size.

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For ARC, predicated instructions are not very friendly with size
optimizations, leading to increased object size. Disable if-conversion
step when optimized for size.

gcc/
xxxx-xx-xx  Claudiu Zissulescu  <claziss@synopsys.com>

	* common/config/arc/arc-common.c (arc_option_optimization_table):
	Disable if-conversion step when optimized for size.

Signed-off-by: Claudiu Zissulescu <claziss@gmail.com>
This commit is contained in:
Claudiu Zissulescu 2020-02-13 12:32:05 +02:00
parent 9ebba06b5b
commit ac5e8d2fa0
2 changed files with 6 additions and 0 deletions
gcc
ChangeLog
common/config/arc
arc-common.c

5
gcc/ChangeLog

@ -1,3 +1,8 @@
2020-02-13 Claudiu Zissulescu <claziss@synopsys.com>
* common/config/arc/arc-common.c (arc_option_optimization_table):
Disable if-conversion step when optimized for size.
2020-02-13 Claudiu Zissulescu <claziss@synopsys.com>
* config/arc/arc.c (arc_conditional_register_usage): R0-R3 and

1
gcc/common/config/arc/arc-common.c

@ -59,6 +59,7 @@ static const struct default_options arc_option_optimization_table[] =
{ OPT_LEVELS_SIZE, OPT_mcase_vector_pcrel, NULL, 1 },
{ OPT_LEVELS_SIZE, OPT_msize_level_, NULL, 3 },
{ OPT_LEVELS_SIZE, OPT_mmillicode, NULL, 1 },
{ OPT_LEVELS_SIZE, OPT_fif_conversion, NULL, 0 },
{ OPT_LEVELS_1_PLUS, OPT_fomit_frame_pointer, NULL, 1 },
{ OPT_LEVELS_3_PLUS_SPEED_ONLY, OPT_msize_level_, NULL, 0 },
{ OPT_LEVELS_3_PLUS_SPEED_ONLY, OPT_malign_call, NULL, 1 },