sparc.h (processor_costs): Define.

2004-07-02  David S. Miller  <davem@nuts.davemloft.net>

	* config/sparc/sparc.h (processor_costs): Define.
	(sparc_costs): Declare.
	* config/sparc/sparc.c (cypress_costs, supersparc_costs,
	hypersparc_costs, sparclet_costs, ultrasparc_costs,
	ultrasparc3_costs): New.
	(sparc_override_options): Set sparc_costs as appropriate.
	(sparc_rtx_costs): Use sparc_costs instead of messy
	conditionals.

From-SVN: r84414

1 files changed, 78 insertions, 0 deletions

diff --git a/gcc/config/sparc/sparc.h b/gcc/config/sparc/sparc.h
index 375f65f..d0f75d2 100644
--- a/gcc/config/sparc/sparc.h
+++ b/gcc/config/sparc/sparc.h
@@ -25,6 +25,84 @@ Boston, MA 02111-1307, USA.  */
 /* Note that some other tm.h files include this one and then override
    whatever definitions are necessary.  */
 
+/* Define the specific costs for a given cpu */
+
+struct processor_costs {
+  /* Integer load */
+  const int int_load;
+
+  /* Integer signed load */
+  const int int_sload;
+
+  /* Integer zeroed load */
+  const int int_zload;
+
+  /* Float load */
+  const int float_load;
+
+  /* fmov, fneg, fabs */
+  const int float_move;
+
+  /* fadd, fsub */
+  const int float_plusminus;
+
+  /* fcmp */
+  const int float_cmp;
+
+  /* fmov, fmovr */
+  const int float_cmove;
+
+  /* fmul */
+  const int float_mul;
+
+  /* fdivs */
+  const int float_div_sf;
+
+  /* fdivd */
+  const int float_div_df;
+
+  /* fsqrts */
+  const int float_sqrt_sf;
+
+  /* fsqrtd */
+  const int float_sqrt_df;
+
+  /* umul/smul */
+  const int int_mul;
+
+  /* mulX */
+  const int int_mulX;
+
+  /* integer multiply cost for each bit set past the most
+     significant 3, so the formula for multiply cost becomes:
+
+	if (rs1 < 0)
+	  highest_bit = highest_clear_bit(rs1);
+	else
+	  highest_bit = highest_set_bit(rs1);
+	if (highest_bit < 3)
+	  highest_bit = 3;
+	cost = int_mul{,X} + ((highest_bit - 3) / int_mul_bit_factor);
+
+     A value of zero indicates that the multiply costs is fixed,
+     and not variable.  */
+  const int int_mul_bit_factor;
+
+  /* udiv/sdiv */
+  const int int_div;
+
+  /* divX */
+  const int int_divX;
+
+  /* movcc, movr */
+  const int int_cmove;
+
+  /* penalty for shifts, due to scheduling rules etc. */
+  const int shift_penalty;
+};
+
+extern const struct processor_costs *sparc_costs;
+
 /* Target CPU builtins.  FIXME: Defining sparc is for the benefit of
    Solaris only; otherwise just define __sparc__.  Sadly the headers
    are such a mess there is no Solaris-specific header.  */