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arm.c (arm_rtx_costs_1): Handle multiply-accumulate.

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2006-10-17  Paul Brook  <paul@codesourcery.com>

	* config/arm/arm.c (arm_rtx_costs_1): Handle multiply-accumulate.

From-SVN: r117809
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Paul Brook 2006-10-17 01:04:27 +00:00 • committed by Paul Brook
parent b5d713b9b0
commit 26da58ddfa
2 changed files with 12 additions and 0 deletions
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4
gcc/ChangeLog
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@ -1,3 +1,7 @@
2006-10-17 Paul Brook <paul@codesourcery.com>
* config/arm/arm.c (arm_rtx_costs_1): Handle multiply-accumulate.
2006-10-16 Brooks Moses <bmoses@stanford.edu>
* doc/contrib.texi, doc/install.texi, doc/standards.texi:

8
gcc/config/arm/arm.c
View file

@ -4465,6 +4465,14 @@ arm_rtx_costs_1 (rtx x, enum rtx_code code, enum rtx_code outer)
/* Fall through */
case PLUS:
if (GET_CODE (XEXP (x, 0)) == MULT)
{
extra_cost = rtx_cost (XEXP (x, 0), code);
if (!REG_OR_SUBREG_REG (XEXP (x, 1)))
extra_cost += 4 * ARM_NUM_REGS (mode);
return extra_cost;
}
if (GET_MODE_CLASS (mode) == MODE_FLOAT)
return (2 + (REG_OR_SUBREG_REG (XEXP (x, 0)) ? 0 : 8)
+ ((REG_OR_SUBREG_REG (XEXP (x, 1))