Hello,
This patch intends to add a specific extra rtx cost table for v7-m profile
targets. Tested with gcc regression test, no new regressions. Is it OK to
trunk?
BR,
Terry
2013-11-28 Terry Guo <terry....@arm.com>
* config/arm/aarch-cost-tables.h (v7m_extra_costs): New table.diff --git a/gcc/config/arm/aarch-cost-tables.h
b/gcc/config/arm/aarch-cost-tables.h
index d3e7dd2..52e18a1 100644
--- a/gcc/config/arm/aarch-cost-tables.h
+++ b/gcc/config/arm/aarch-cost-tables.h
@@ -223,5 +223,105 @@ const struct cpu_cost_table cortexa53_extra_costs =
};
+const struct cpu_cost_table v7m_extra_costs =
+{
+ /* ALU */
+ {
+ 0, /* Arith. */
+ 0, /* Logical. */
+ 0, /* Shift. */
+ 0, /* Shift_reg. */
+ 0, /* Arith_shift. */
+ COSTS_N_INSNS (1), /* Arith_shift_reg. */
+ 0, /* Log_shift. */
+ COSTS_N_INSNS (1), /* Log_shift_reg. */
+ 0, /* Extend. */
+ COSTS_N_INSNS (1), /* Extend_arith. */
+ 0, /* Bfi. */
+ 0, /* Bfx. */
+ 0, /* Clz. */
+ COSTS_N_INSNS (1), /* non_exec. */
+ false /* non_exec_costs_exec. */
+ },
+ {
+ /* MULT SImode */
+ {
+ COSTS_N_INSNS (1), /* Simple. */
+ COSTS_N_INSNS (1), /* Flag_setting. */
+ COSTS_N_INSNS (2), /* Extend. */
+ COSTS_N_INSNS (1), /* Add. */
+ COSTS_N_INSNS (3), /* Extend_add. */
+ COSTS_N_INSNS (8) /* Idiv. */
+ },
+ /* MULT DImode */
+ {
+ 0, /* Simple (N/A). */
+ 0, /* Flag_setting (N/A). */
+ COSTS_N_INSNS (2), /* Extend. */
+ 0, /* Add (N/A). */
+ COSTS_N_INSNS (3), /* Extend_add. */
+ 0 /* Idiv (N/A). */
+ }
+ },
+ /* LD/ST */
+ {
+ COSTS_N_INSNS (2), /* Load. */
+ 0, /* Load_sign_extend. */
+ COSTS_N_INSNS (3), /* Ldrd. */
+ COSTS_N_INSNS (2), /* Ldm_1st. */
+ 1, /* Ldm_regs_per_insn_1st. */
+ 1, /* Ldm_regs_per_insn_subsequent. */
+ COSTS_N_INSNS (2), /* Loadf. */
+ COSTS_N_INSNS (3), /* Loadd. */
+ COSTS_N_INSNS (1), /* Load_unaligned. */
+ COSTS_N_INSNS (2), /* Store. */
+ COSTS_N_INSNS (3), /* Strd. */
+ COSTS_N_INSNS (2), /* Stm_1st. */
+ 1, /* Stm_regs_per_insn_1st. */
+ 1, /* Stm_regs_per_insn_subsequent. */
+ COSTS_N_INSNS (2), /* Storef. */
+ COSTS_N_INSNS (3), /* Stored. */
+ COSTS_N_INSNS (1) /* Store_unaligned. */
+ },
+ {
+ /* FP SFmode */
+ {
+ COSTS_N_INSNS (7), /* Div. */
+ COSTS_N_INSNS (2), /* Mult. */
+ COSTS_N_INSNS (5), /* Mult_addsub. */
+ COSTS_N_INSNS (3), /* Fma. */
+ COSTS_N_INSNS (1), /* Addsub. */
+ 0, /* Fpconst. */
+ 0, /* Neg. */
+ 0, /* Compare. */
+ 0, /* Widen. */
+ 0, /* Narrow. */
+ 0, /* Toint. */
+ 0, /* Fromint. */
+ 0 /* Roundint. */
+ },
+ /* FP DFmode */
+ {
+ COSTS_N_INSNS (15), /* Div. */
+ COSTS_N_INSNS (5), /* Mult. */
+ COSTS_N_INSNS (7), /* Mult_addsub. */
+ COSTS_N_INSNS (7), /* Fma. */
+ COSTS_N_INSNS (3), /* Addsub. */
+ 0, /* Fpconst. */
+ 0, /* Neg. */
+ 0, /* Compare. */
+ 0, /* Widen. */
+ 0, /* Narrow. */
+ 0, /* Toint. */
+ 0, /* Fromint. */
+ 0 /* Roundint. */
+ }
+ },
+ /* Vector */
+ {
+ COSTS_N_INSNS (1) /* Alu. */
+ }
+};
+
#endif /* GCC_AARCH_COST_TABLES_H */
diff --git a/gcc/config/arm/arm.c b/gcc/config/arm/arm.c
index 129e428..cbd201e 100644
--- a/gcc/config/arm/arm.c
+++ b/gcc/config/arm/arm.c
@@ -1473,7 +1473,7 @@ const struct tune_params arm_cortex_a9_tune =
const struct tune_params arm_v7m_tune =
{
arm_9e_rtx_costs,
- &generic_extra_costs,
+ &v7m_extra_costs,
NULL, /* Sched adj cost. */
1, /* Constant limit. */
5, /* Max cond insns. */
