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[PATCH][ARM] New rtx cost table for Cortex-A7


Hi all,

This patch adds the new rtx costs for the Cortex-A7 core as well as a new tuning structure to contain it.

Tested arm-none-eabi on qemu and no benchmark regressions.

Ok for trunk?

Thanks,
Kyrill

[gcc/]
2013-10-29  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

    * config/arm/arm.c (cortexa7_extra_costs): New table.
    (arm_cortex_a7_tune): New.
    * config/arm/arm-cores.def: Use cortex_a7 tuning for cortex-a7.
diff --git a/gcc/config/arm/arm-cores.def b/gcc/config/arm/arm-cores.def
index 17c9bf3..79e2e87 100644
--- a/gcc/config/arm/arm-cores.def
+++ b/gcc/config/arm/arm-cores.def
@@ -125,7 +125,7 @@ ARM_CORE("arm1156t2-s",	  arm1156t2s,	6T2,				 FL_LDSCHED, v6t2)
 ARM_CORE("arm1156t2f-s",  arm1156t2fs,  6T2,				 FL_LDSCHED | FL_VFPV2, v6t2)
 ARM_CORE("generic-armv7-a", genericv7a,	7A,				 FL_LDSCHED, cortex)
 ARM_CORE("cortex-a5",	  cortexa5,	7A,				 FL_LDSCHED, cortex_a5)
-ARM_CORE("cortex-a7",	  cortexa7,	7A,				 FL_LDSCHED | FL_THUMB_DIV | FL_ARM_DIV, cortex)
+ARM_CORE("cortex-a7",	  cortexa7,	7A,				 FL_LDSCHED | FL_THUMB_DIV | FL_ARM_DIV, cortex_a7)
 ARM_CORE("cortex-a8",	  cortexa8,	7A,				 FL_LDSCHED, cortex)
 ARM_CORE("cortex-a9",	  cortexa9,	7A,				 FL_LDSCHED, cortex_a9)
 ARM_CORE("cortex-a15",	  cortexa15,	7A,				 FL_LDSCHED | FL_THUMB_DIV | FL_ARM_DIV, cortex_a15)
diff --git a/gcc/config/arm/arm.c b/gcc/config/arm/arm.c
index 4cdac60..768bc21 100644
--- a/gcc/config/arm/arm.c
+++ b/gcc/config/arm/arm.c
@@ -1050,6 +1050,107 @@ const struct cpu_cost_table generic_extra_costs =
   }
 };
 
+const struct cpu_cost_table cortexa7_extra_costs =
+{
+  /* ALU */
+  {
+    0,			/* Arith.  */
+    0,			/* Logical.  */
+    COSTS_N_INSNS (1),	/* Shift.  */
+    COSTS_N_INSNS (1),	/* Shift_reg.  */
+    COSTS_N_INSNS (1),	/* Arith_shift.  */
+    COSTS_N_INSNS (1),	/* Arith_shift_reg.  */
+    COSTS_N_INSNS (1),	/* Log_shift.  */
+    COSTS_N_INSNS (1),	/* Log_shift_reg.  */
+    COSTS_N_INSNS (1),	/* Extend.  */
+    COSTS_N_INSNS (1),	/* Extend_arith.  */
+    COSTS_N_INSNS (1),	/* Bfi.  */
+    COSTS_N_INSNS (1),	/* Bfx.  */
+    COSTS_N_INSNS (1),	/* Clz.  */
+    0,			/* non_exec.  */
+    true		/* non_exec_costs_exec.  */
+  },
+
+  {
+    /* MULT SImode */
+    {
+      0,			/* Simple.  */
+      COSTS_N_INSNS (1),	/* Flag_setting.  */
+      COSTS_N_INSNS (1),	/* Extend.  */
+      COSTS_N_INSNS (1),	/* Add.  */
+      COSTS_N_INSNS (1),	/* Extend_add.  */
+      COSTS_N_INSNS (7)		/* Idiv.  */
+    },
+    /* MULT DImode */
+    {
+      0,			/* Simple (N/A).  */
+      0,			/* Flag_setting (N/A).  */
+      COSTS_N_INSNS (1),	/* Extend.  */
+      0,			/* Add.  */
+      COSTS_N_INSNS (2),	/* Extend_add.  */
+      0				/* Idiv (N/A).  */
+    }
+  },
+  /* LD/ST */
+  {
+    COSTS_N_INSNS (1),	/* Load.  */
+    COSTS_N_INSNS (1),	/* Load_sign_extend.  */
+    COSTS_N_INSNS (3),	/* Ldrd.  */
+    COSTS_N_INSNS (1),	/* Ldm_1st.  */
+    1,			/* Ldm_regs_per_insn_1st.  */
+    2,			/* Ldm_regs_per_insn_subsequent.  */
+    COSTS_N_INSNS (2),	/* Loadf.  */
+    COSTS_N_INSNS (2),	/* Loadd.  */
+    COSTS_N_INSNS (1),	/* Load_unaligned.  */
+    COSTS_N_INSNS (1),	/* Store.  */
+    COSTS_N_INSNS (3),	/* Strd.  */
+    COSTS_N_INSNS (1),	/* Stm_1st.  */
+    1,			/* Stm_regs_per_insn_1st.  */
+    2,			/* Stm_regs_per_insn_subsequent.  */
+    COSTS_N_INSNS (2),	/* Storef.  */
+    COSTS_N_INSNS (2),	/* Stored.  */
+    COSTS_N_INSNS (1)	/* Store_unaligned.  */
+  },
+  {
+    /* FP SFmode */
+    {
+      COSTS_N_INSNS (15),	/* Div.  */
+      COSTS_N_INSNS (3),	/* Mult.  */
+      COSTS_N_INSNS (7),	/* Mult_addsub. */
+      COSTS_N_INSNS (7),	/* Fma.  */
+      COSTS_N_INSNS (3),	/* Addsub.  */
+      COSTS_N_INSNS (3),	/* Fpconst.  */
+      COSTS_N_INSNS (3),	/* Neg.  */
+      COSTS_N_INSNS (3),	/* Compare.  */
+      COSTS_N_INSNS (3),	/* Widen.  */
+      COSTS_N_INSNS (3),	/* Narrow.  */
+      COSTS_N_INSNS (3),	/* Toint.  */
+      COSTS_N_INSNS (3),	/* Fromint.  */
+      COSTS_N_INSNS (3)		/* Roundint.  */
+    },
+    /* FP DFmode */
+    {
+      COSTS_N_INSNS (30),	/* Div.  */
+      COSTS_N_INSNS (6),	/* Mult.  */
+      COSTS_N_INSNS (10),	/* Mult_addsub.  */
+      COSTS_N_INSNS (7),	/* Fma.  */
+      COSTS_N_INSNS (3),	/* Addsub.  */
+      COSTS_N_INSNS (3),	/* Fpconst.  */
+      COSTS_N_INSNS (3),	/* Neg.  */
+      COSTS_N_INSNS (3),	/* Compare.  */
+      COSTS_N_INSNS (3),	/* Widen.  */
+      COSTS_N_INSNS (3),	/* Narrow.  */
+      COSTS_N_INSNS (3),	/* Toint.  */
+      COSTS_N_INSNS (3),	/* Fromint.  */
+      COSTS_N_INSNS (3)		/* Roundint.  */
+    }
+  },
+  /* Vector */
+  {
+    COSTS_N_INSNS (1)	/* Alu.  */
+  }
+};
+
 const struct cpu_cost_table cortexa15_extra_costs =
 {
   /* ALU */
@@ -1266,6 +1367,22 @@ const struct tune_params arm_cortex_tune =
   false                                         /* Prefer Neon for 64-bits bitops.  */
 };
 
+const struct tune_params arm_cortex_a7_tune =
+{
+  arm_9e_rtx_costs,
+  &cortexa7_extra_costs,
+  NULL,
+  1,						/* Constant limit.  */
+  5,						/* Max cond insns.  */
+  ARM_PREFETCH_NOT_BENEFICIAL,
+  false,					/* Prefer constant pool.  */
+  arm_default_branch_cost,
+  false,					/* Prefer LDRD/STRD.  */
+  {true, true},					/* Prefer non short circuit.  */
+  &arm_default_vec_cost,			/* Vectorizer costs.  */
+  false						/* Prefer Neon for 64-bits bitops.  */
+};
+
 const struct tune_params arm_cortex_a15_tune =
 {
   arm_9e_rtx_costs,

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