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sched-int.h (struct _dep): Add member cost. 

* sched-int.h (struct _dep): Add member cost.
	(DEP_COST, UNKNOWN_DEP_COST): New macros.
	* sched-deps.c (init_dep_1): Initialize DEP_COST.
	* haifa-sched.c (dep_cost_1): Use and set DEP_COST.
	(sched_change_pattern): Reset it for dependent insns.

From-SVN: r176226
This commit is contained in:
Bernd Schmidt 2011-07-13 10:18:32 +00:00 committed by Bernd Schmidt
parent 2d1efe2d2d
commit a19af9c4e4
4 changed files with 29 additions and 0 deletions
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8
gcc/ChangeLog
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@ -1,3 +1,11 @@
2011-07-13 Bernd Schmidt <bernds@codesourcery.com>
* sched-int.h (struct _dep): Add member cost.
(DEP_COST, UNKNOWN_DEP_COST): New macros.
* sched-deps.c (init_dep_1): Initialize DEP_COST.
* haifa-sched.c (dep_cost_1): Use and set DEP_COST.
(sched_change_pattern): Reset it for dependent insns.
2011-07-13 Rainer Orth <ro@CeBiTec.Uni-Bielefeld.DE>
* Makefile.in (CRT0STUFF_T_CFLAGS): Remove.

14
gcc/haifa-sched.c
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@ -854,6 +854,9 @@ dep_cost_1 (dep_t link, dw_t dw)
rtx used = DEP_CON (link);
int cost;
if (DEP_COST (link) != UNKNOWN_DEP_COST)
return DEP_COST (link);
/* A USE insn should never require the value used to be computed.
This allows the computation of a function's result and parameter
values to overlap the return and call. We don't care about the
@ -911,6 +914,7 @@ dep_cost_1 (dep_t link, dw_t dw)
cost = 0;
}
DEP_COST (link) = cost;
return cost;
}
@ -4865,11 +4869,21 @@ fix_recovery_deps (basic_block rec)
void
sched_change_pattern (rtx insn, rtx new_pat)
{
sd_iterator_def sd_it;
dep_t dep;
int t;
t = validate_change (insn, &PATTERN (insn), new_pat, 0);
gcc_assert (t);
dfa_clear_single_insn_cache (insn);
for (sd_it = sd_iterator_start (insn, (SD_LIST_FORW | SD_LIST_BACK
| SD_LIST_RES_BACK));
sd_iterator_cond (&sd_it, &dep);)
{
DEP_COST (dep) = UNKNOWN_DEP_COST;
sd_iterator_next (&sd_it);
}
}
/* Change pattern of INSN to NEW_PAT. Invalidate cached haifa

1
gcc/sched-deps.c
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@ -107,6 +107,7 @@ init_dep_1 (dep_t dep, rtx pro, rtx con, enum reg_note type, ds_t ds)
DEP_CON (dep) = con;
DEP_TYPE (dep) = type;
DEP_STATUS (dep) = ds;
DEP_COST (dep) = UNKNOWN_DEP_COST;
}
/* Init DEP with the arguments.

6
gcc/sched-int.h
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@ -215,6 +215,9 @@ struct _dep
/* Dependency status. This field holds all dependency types and additional
information for speculative dependencies. */
ds_t status;
/* Cached cost of the dependency. */
int cost;
};
typedef struct _dep dep_def;
@ -224,6 +227,9 @@ typedef dep_def *dep_t;
#define DEP_CON(D) ((D)->con)
#define DEP_TYPE(D) ((D)->type)
#define DEP_STATUS(D) ((D)->status)
#define DEP_COST(D) ((D)->cost)
#define UNKNOWN_DEP_COST INT_MIN
/* Functions to work with dep. */