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[ARC] Code size modifications. 

gcc/
2017-03-13  Claudiu Zissulescu  <claziss@synopsys.com>

	* config/arc/arc.c (arc_init): Use multiplier whenever we have it.
	(arc_conditional_register_usage): Use a different allocation order
	when optimizing for size.
	* common/config/arc/arc-common.c (arc_option_optimization_table):
	Section anchors default on when optimizing for size.

From-SVN: r246091
This commit is contained in:
Claudiu Zissulescu 2017-03-13 13:56:22 +01:00 committed by Claudiu Zissulescu
parent 8c56cc5a88
commit 0e5172ebf2
3 changed files with 51 additions and 14 deletions
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8
gcc/ChangeLog
View File

@ -1,3 +1,11 @@
2017-03-13 Claudiu Zissulescu <claziss@synopsys.com>
* config/arc/arc.c (arc_init): Use multiplier whenever we have it.
(arc_conditional_register_usage): Use a different allocation order
when optimizing for size.
* common/config/arc/arc-common.c (arc_option_optimization_table):
Section anchors default on when optimizing for size.
2017-03-13 Claudiu Zissulescu <claziss@synopsys.com>
* config/arc/arc.md (*tst_bitfield_tst): Fix pattern.

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

@ -46,6 +46,7 @@ arc_option_init_struct (struct gcc_options *opts)
#define OPT_LEVELS_3_PLUS_SPEED_ONLY OPT_LEVELS_3_PLUS
static const struct default_options arc_option_optimization_table[] =
{
{ OPT_LEVELS_SIZE, OPT_fsection_anchors, NULL, 1 },
{ OPT_LEVELS_1_PLUS, OPT_fomit_frame_pointer, NULL, 1 },
{ OPT_LEVELS_ALL, OPT_mRcq, NULL, 1 },
{ OPT_LEVELS_ALL, OPT_mRcw, NULL, 1 },

56
gcc/config/arc/arc.c
View File

@ -676,6 +676,12 @@ make_pass_arc_predicate_delay_insns (gcc::context *ctxt)
static void
arc_init (void)
{
if (TARGET_V2)
{
/* I have the multiplier, then use it*/
if (TARGET_MPYW || TARGET_MULTI)
arc_multcost = COSTS_N_INSNS (1);
}
/* Note: arc_multcost is only used in rtx_cost if speed is true. */
if (arc_multcost < 0)
switch (arc_tune)
@ -1374,20 +1380,42 @@ arc_conditional_register_usage (void)
}
if (TARGET_Q_CLASS)
{
reg_alloc_order[2] = 12;
reg_alloc_order[3] = 13;
reg_alloc_order[4] = 14;
reg_alloc_order[5] = 15;
reg_alloc_order[6] = 1;
reg_alloc_order[7] = 0;
reg_alloc_order[8] = 4;
reg_alloc_order[9] = 5;
reg_alloc_order[10] = 6;
reg_alloc_order[11] = 7;
reg_alloc_order[12] = 8;
reg_alloc_order[13] = 9;
reg_alloc_order[14] = 10;
reg_alloc_order[15] = 11;
if (optimize_size)
{
reg_alloc_order[0] = 0;
reg_alloc_order[1] = 1;
reg_alloc_order[2] = 2;
reg_alloc_order[3] = 3;
reg_alloc_order[4] = 12;
reg_alloc_order[5] = 13;
reg_alloc_order[6] = 14;
reg_alloc_order[7] = 15;
reg_alloc_order[8] = 4;
reg_alloc_order[9] = 5;
reg_alloc_order[10] = 6;
reg_alloc_order[11] = 7;
reg_alloc_order[12] = 8;
reg_alloc_order[13] = 9;
reg_alloc_order[14] = 10;
reg_alloc_order[15] = 11;
}
else
{
reg_alloc_order[2] = 12;
reg_alloc_order[3] = 13;
reg_alloc_order[4] = 14;
reg_alloc_order[5] = 15;
reg_alloc_order[6] = 1;
reg_alloc_order[7] = 0;
reg_alloc_order[8] = 4;
reg_alloc_order[9] = 5;
reg_alloc_order[10] = 6;
reg_alloc_order[11] = 7;
reg_alloc_order[12] = 8;
reg_alloc_order[13] = 9;
reg_alloc_order[14] = 10;
reg_alloc_order[15] = 11;
}
}
if (TARGET_SIMD_SET)
{