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sh.c (andcosts): Renamed to and_xor_ior_costs.

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* config/sh/sh.c (andcosts): Renamed to and_xor_ior_costs.
	Added AND special case.  Adapted comments.
	(sh_rtx_costs): Added XOR and IOR case.

From-SVN: r179073
This commit is contained in:
Oleg Endo 2011-09-22 00:41:38 +00:00 committed by Kaz Kojima
parent f4d7f82866
commit b7cf894ffa
2 changed files with 20 additions and 10 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2011-09-22 Oleg Endo <oleg.endo@t-online.de>
* config/sh/sh.c (andcosts): Renamed to and_xor_ior_costs.
Added AND special case. Adapted comments.
(sh_rtx_costs): Added XOR and IOR case.
2011-09-21 Jan Hubicka <jh@suse.cz>
* ipa-inline-analsis.c (compute_inline_parameters): Set

24
gcc/config/sh/sh.c
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@ -242,7 +242,7 @@ static void sh_file_start (void);
static int flow_dependent_p (rtx, rtx);
static void flow_dependent_p_1 (rtx, const_rtx, void *);
static int shiftcosts (rtx);
static int andcosts (rtx);
static int and_xor_ior_costs (rtx, int code);
static int addsubcosts (rtx);
static int multcosts (rtx);
static bool unspec_caller_rtx_p (rtx);
@ -2830,14 +2830,15 @@ shiftcosts (rtx x)
return shift_insns[value];
}
/* Return the cost of an AND operation. */
/* Return the cost of an AND/XOR/IOR operation. */
static inline int
andcosts (rtx x)
and_xor_ior_costs (rtx x, int code)
{
int i;
/* Anding with a register is a single cycle and instruction. */
/* A logical operation with two registers is a single cycle
instruction. */
if (!CONST_INT_P (XEXP (x, 1)))
return 1;
@ -2853,17 +2854,18 @@ andcosts (rtx x)
}
/* These constants are single cycle extu.[bw] instructions. */
if (i == 0xff || i == 0xffff)
if ((i == 0xff || i == 0xffff) && code == AND)
return 1;
/* Constants that can be used in an and immediate instruction in a single
cycle, but this requires r0, so make it a little more expensive. */
/* Constants that can be used in an instruction as an immediate are
a single cycle, but this requires r0, so make it a little more
expensive. */
if (CONST_OK_FOR_K08 (i))
return 2;
/* Constants that can be loaded with a mov immediate and an and.
/* Constants that can be loaded with a mov immediate need one more cycle.
This case is probably unnecessary. */
if (CONST_OK_FOR_I08 (i))
return 2;
/* Any other constants requires a 2 cycle pc-relative load plus an and.
/* Any other constant requires an additional 2 cycle pc-relative load.
This case is probably unnecessary. */
return 3;
}
@ -3032,7 +3034,9 @@ sh_rtx_costs (rtx x, int code, int outer_code, int opno ATTRIBUTE_UNUSED,
return true;
case AND:
*total = COSTS_N_INSNS (andcosts (x));
case XOR:
case IOR:
*total = COSTS_N_INSNS (and_xor_ior_costs (x, code));
return true;
case MULT: