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arm.c: Tune the max_cond_insns/branch_cost for Cortex-M7.

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2015-01-14  Hale Wang  <hale.wang@arm.com>

	* config/arm/arm.c: Tune the max_cond_insns/branch_cost for
		Cortex-M7.

From-SVN: r219589
This commit is contained in:
Hale Wang 2015-01-14 11:15:30 +00:00 committed by Hale Wang
parent 683750ce09
commit 6af2585d5c
2 changed files with 14 additions and 2 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2015-01-14 Hale Wang <hale.wang@arm.com>
* config/arm/arm.c: Tune the max_cond_insns/branch_cost for
Cortex-M7.
2015-01-14 Richard Biener <rguenther@suse.de>
PR lto/64415

11
gcc/config/arm/arm.c
View File

@ -294,6 +294,7 @@ static unsigned int arm_autovectorize_vector_sizes (void);
static int arm_default_branch_cost (bool, bool);
static int arm_cortex_a5_branch_cost (bool, bool);
static int arm_cortex_m_branch_cost (bool, bool);
static int arm_cortex_m7_branch_cost (bool, bool);
static bool arm_vectorize_vec_perm_const_ok (machine_mode vmode,
const unsigned char *sel);
@ -2001,10 +2002,10 @@ const struct tune_params arm_cortex_m7_tune =
&v7m_extra_costs,
NULL, /* Sched adj cost. */
0, /* Constant limit. */
0, /* Max cond insns. */
1, /* Max cond insns. */
ARM_PREFETCH_NOT_BENEFICIAL,
true, /* Prefer constant pool. */
arm_cortex_m_branch_cost,
arm_cortex_m7_branch_cost,
false, /* Prefer LDRD/STRD. */
{true, true}, /* Prefer non short circuit. */
&arm_default_vec_cost, /* Vectorizer costs. */
@ -12052,6 +12053,12 @@ arm_cortex_m_branch_cost (bool speed_p, bool predictable_p)
: arm_default_branch_cost (speed_p, predictable_p);
}
static int
arm_cortex_m7_branch_cost (bool speed_p, bool predictable_p)
{
return speed_p ? 0 : arm_default_branch_cost (speed_p, predictable_p);
}
static bool fp_consts_inited = false;
static REAL_VALUE_TYPE value_fp0;