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params.def (PARAM_MIN_SPEC_PROB): New. 

2005-08-24  Pete Steinmetz  <steinmtz@us.ibm.com>

        * params.def (PARAM_MIN_SPEC_PROB): New.
        * sched-rgn.c (MIN_PROBABILITY): Delete.
        (compute_trg_info): Convert to PARAM_VALUE.
        * doc/invoke.texi (param): Document min-spec-prob.

From-SVN: r103450
This commit is contained in:
Pete Steinmetz 2005-08-24 20:28:07 +00:00 committed by David Edelsohn
parent fe58e07668
commit 6f48c21a63
4 changed files with 17 additions and 5 deletions
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7
gcc/ChangeLog
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@ -1,3 +1,10 @@
2005-08-24 Pete Steinmetz <steinmtz@us.ibm.com>
* params.def (PARAM_MIN_SPEC_PROB): New.
* sched-rgn.c (MIN_PROBABILITY): Delete.
(compute_trg_info): Convert to PARAM_VALUE.
* doc/invoke.texi (param): Document min-spec-prob.
2005-08-24 Fariborz Jahanian <fjahanian@apple.com>
* config/darwin.h: define __PIC__

4
gcc/doc/invoke.texi
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@ -6005,6 +6005,10 @@ interblock scheduling. The default value is 10.
The maximum number of insns in a region to be considered for
interblock scheduling. The default value is 100.
@item min-sched-prob
The minimum probability of reaching a source block for interblock
speculative scheduling. The default value is 40.
@item max-last-value-rtl
The maximum size measured as number of RTLs that can be recorded in an expression

5
gcc/params.def
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@ -451,6 +451,11 @@ DEFPARAM(PARAM_MAX_SCHED_REGION_INSNS,
"The maximum number of insns in a region to be considered for interblock scheduling",
100, 0, 0)
DEFPARAM(PARAM_MIN_SPEC_PROB,
"min-spec-prob",
"The minimum probability of reaching a source block for interblock speculative scheduling",
40, 0, 0)
DEFPARAM(PARAM_MAX_LAST_VALUE_RTL,
"max-last-value-rtl",
"The maximum number of RTL nodes that can be recorded as combiner's last value",

6
gcc/sched-rgn.c
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@ -251,10 +251,6 @@ static void compute_dom_prob_ps (int);
#define IS_SPECULATIVE_INSN(INSN) (IS_SPECULATIVE (BLOCK_TO_BB (BLOCK_NUM (INSN))))
#define INSN_BB(INSN) (BLOCK_TO_BB (BLOCK_NUM (INSN)))
/* Parameters affecting the decision of rank_for_schedule().
??? Nope. But MIN_PROBABILITY is used in compute_trg_info. */
#define MIN_PROBABILITY 40
/* Speculative scheduling functions. */
static int check_live_1 (int, rtx);
static void update_live_1 (int, rtx);
@ -1013,7 +1009,7 @@ compute_trg_info (int trg)
if (sp->is_valid)
{
sp->src_prob = GET_SRC_PROB (i, trg);
sp->is_valid = (sp->src_prob >= MIN_PROBABILITY);
sp->is_valid = (sp->src_prob >= PARAM_VALUE (PARAM_MIN_SPEC_PROB));
}
if (sp->is_valid)