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arm.c (arm_rtx_costs_1): Don't special case for Thumb-2 in the MINUS case. 

* config/arm/arm.c (arm_rtx_costs_1): Don't special case for
	Thumb-2 in the MINUS case.

From-SVN: r160436
This commit is contained in:
Kazu Hirata 2010-06-08 13:15:25 +00:00 committed by Kazu Hirata
parent 3bb1ed661a
commit 29a551b3b4
2 changed files with 5 additions and 17 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2010-06-08 Kazu Hirata <kazu@codesourcery.com>
* config/arm/arm.c (arm_rtx_costs_1): Don't special case for
Thumb-2 in the MINUS case.
2010-06-08 Laurynas Biveinis <laurynas.biveinis@gmail.com>
* doc/tm.texi (Per-Function Data): Do not reference ggc_alloc.

17
gcc/config/arm/arm.c
View File

@ -6377,23 +6377,6 @@ arm_rtx_costs_1 (rtx x, enum rtx_code outer, int* total, bool speed)
return true;
case MINUS:
if (TARGET_THUMB2)
{
if (GET_MODE_CLASS (mode) == MODE_FLOAT)
{
if (TARGET_HARD_FLOAT && (mode == SFmode || mode == DFmode))
*total = COSTS_N_INSNS (1);
else
*total = COSTS_N_INSNS (20);
}
else
*total = COSTS_N_INSNS (ARM_NUM_REGS (mode));
/* Thumb2 does not have RSB, so all arguments must be
registers (subtracting a constant is canonicalized as
addition of the negated constant). */
return false;
}
if (mode == DImode)
{
*total = COSTS_N_INSNS (ARM_NUM_REGS (mode));