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[ARM][1/3] Add rev field to rtx cost tables

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* config/arm/aarch-common-protos.h (alu_cost_table): Add rev field.
       * config/arm/aarch-cost-tables.h (generic_extra_costs): Specify
       rev cost.
       (cortex_a53_extra_costs): Likewise.
       (cortex_a57_extra_costs): Likewise.
       * config/arm/arm.c (cortexa9_extra_costs): Likewise.
       (cortexa7_extra_costs): Likewise.
       (cortexa8_extra_costs): Likewise.
       (cortexa12_extra_costs): Likewise.
       (cortexa15_extra_costs): Likewise.
       (v7m_extra_costs): Likewise.
       (arm_new_rtx_costs): Handle BSWAP.

From-SVN: r209703
This commit is contained in:
Kyrylo Tkachov 2014-04-23 15:23:14 +00:00 committed by Kyrylo Tkachov
parent e0d8c86cd8
commit 9ac05ae590
4 changed files with 66 additions and 0 deletions
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15
gcc/ChangeLog
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@ -1,3 +1,18 @@
2014-04-23 Kyrylo Tkachov <kyrylo.tkachov@arm.com>
* config/arm/aarch-common-protos.h (alu_cost_table): Add rev field.
* config/arm/aarch-cost-tables.h (generic_extra_costs): Specify
rev cost.
(cortex_a53_extra_costs): Likewise.
(cortex_a57_extra_costs): Likewise.
* config/arm/arm.c (cortexa9_extra_costs): Likewise.
(cortexa7_extra_costs): Likewise.
(cortexa8_extra_costs): Likewise.
(cortexa12_extra_costs): Likewise.
(cortexa15_extra_costs): Likewise.
(v7m_extra_costs): Likewise.
(arm_new_rtx_costs): Handle BSWAP.
2013-04-23 Kyrylo Tkachov <kyrylo.tkachov@arm.com>
* config/arm/arm.c (cortexa8_extra_costs): New table.

1
gcc/config/arm/aarch-common-protos.h
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@ -54,6 +54,7 @@ struct alu_cost_table
const int bfi; /* Bit-field insert. */
const int bfx; /* Bit-field extraction. */
const int clz; /* Count Leading Zeros. */
const int rev; /* Reverse bits/bytes. */
const int non_exec; /* Extra cost when not executing insn. */
const bool non_exec_costs_exec; /* True if non-execution must add the exec
cost. */

3
gcc/config/arm/aarch-cost-tables.h
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@ -39,6 +39,7 @@ const struct cpu_cost_table generic_extra_costs =
0, /* bfi. */
0, /* bfx. */
0, /* clz. */
0, /* rev. */
COSTS_N_INSNS (1), /* non_exec. */
false /* non_exec_costs_exec. */
},
@ -139,6 +140,7 @@ const struct cpu_cost_table cortexa53_extra_costs =
COSTS_N_INSNS (1), /* bfi. */
COSTS_N_INSNS (1), /* bfx. */
0, /* clz. */
0, /* rev. */
0, /* non_exec. */
true /* non_exec_costs_exec. */
},
@ -239,6 +241,7 @@ const struct cpu_cost_table cortexa57_extra_costs =
COSTS_N_INSNS (1), /* bfi. */
0, /* bfx. */
0, /* clz. */
0, /* rev. */
0, /* non_exec. */
true /* non_exec_costs_exec. */
},

47
gcc/config/arm/arm.c
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@ -986,6 +986,7 @@ const struct cpu_cost_table cortexa9_extra_costs =
COSTS_N_INSNS (1), /* bfi. */
COSTS_N_INSNS (1), /* bfx. */
0, /* clz. */
0, /* rev. */
0, /* non_exec. */
true /* non_exec_costs_exec. */
},
@ -1086,6 +1087,7 @@ const struct cpu_cost_table cortexa8_extra_costs =
0, /* bfi. */
0, /* bfx. */
0, /* clz. */
0, /* rev. */
0, /* non_exec. */
true /* non_exec_costs_exec. */
},
@ -1188,6 +1190,7 @@ const struct cpu_cost_table cortexa7_extra_costs =
COSTS_N_INSNS (1), /* bfi. */
COSTS_N_INSNS (1), /* bfx. */
COSTS_N_INSNS (1), /* clz. */
COSTS_N_INSNS (1), /* rev. */
0, /* non_exec. */
true /* non_exec_costs_exec. */
},
@ -1289,6 +1292,7 @@ const struct cpu_cost_table cortexa12_extra_costs =
0, /* bfi. */
COSTS_N_INSNS (1), /* bfx. */
COSTS_N_INSNS (1), /* clz. */
COSTS_N_INSNS (1), /* rev. */
0, /* non_exec. */
true /* non_exec_costs_exec. */
},
@ -1389,6 +1393,7 @@ const struct cpu_cost_table cortexa15_extra_costs =
COSTS_N_INSNS (1), /* bfi. */
0, /* bfx. */
0, /* clz. */
0, /* rev. */
0, /* non_exec. */
true /* non_exec_costs_exec. */
},
@ -1489,6 +1494,7 @@ const struct cpu_cost_table v7m_extra_costs =
0, /* bfi. */
0, /* bfx. */
0, /* clz. */
0, /* rev. */
COSTS_N_INSNS (1), /* non_exec. */
false /* non_exec_costs_exec. */
},
@ -9470,6 +9476,47 @@ arm_new_rtx_costs (rtx x, enum rtx_code code, enum rtx_code outer_code,
*cost = LIBCALL_COST (2);
return false;
case BSWAP:
if (arm_arch6)
{
if (mode == SImode)
{
*cost = COSTS_N_INSNS (1);
if (speed_p)
*cost += extra_cost->alu.rev;
return false;
}
}
else
{
/* No rev instruction available. Look at arm_legacy_rev
and thumb_legacy_rev for the form of RTL used then. */
if (TARGET_THUMB)
{
*cost = COSTS_N_INSNS (10);
if (speed_p)
{
*cost += 6 * extra_cost->alu.shift;
*cost += 3 * extra_cost->alu.logical;
}
}
else
{
*cost = COSTS_N_INSNS (5);
if (speed_p)
{
*cost += 2 * extra_cost->alu.shift;
*cost += extra_cost->alu.arith_shift;
*cost += 2 * extra_cost->alu.logical;
}
}
return true;
}
return false;
case MINUS:
if (TARGET_HARD_FLOAT && GET_MODE_CLASS (mode) == MODE_FLOAT
&& (mode == SFmode || !TARGET_VFP_SINGLE))