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postreload-gcse.c (eliminate_partially_redundant_loads): Use optimize_bb_for_size_p.

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* postreload-gcse.c (eliminate_partially_redundant_loads): Use optimize_bb_for_size_p.
	* predict.c (maybe_hot_frequency_p): Make inline.
	(maybe_hot_count_p): Break out from ...
	(maybe_hot_bb_p): ... this one.
	(maybe_hot_edge_p): Simplify.
	* basic-block.h (probably_cold_bb_p): Remove.

From-SVN: r139830
This commit is contained in:
Jan Hubicka 2008-08-31 14:52:07 +02:00 committed by Jan Hubicka
parent 847535b625
commit fb2fed03b6
4 changed files with 28 additions and 30 deletions
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9
gcc/ChangeLog
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@ -1,3 +1,12 @@
2008-08-31 Jan Hubicka <jh@suse.cz>
* postreload-gcse.c (eliminate_partially_redundant_loads): Use optimize_bb_for_size_p.
* predict.c (maybe_hot_frequency_p): Make inline.
(maybe_hot_count_p): Break out from ...
(maybe_hot_bb_p): ... this one.
(maybe_hot_edge_p): Simplify.
* basic-block.h (probably_cold_bb_p): Remove.
2008-08-31 Jakub Jelinek <jakub@redhat.com>
PR target/37168

1
gcc/basic-block.h
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@ -829,7 +829,6 @@ extern void compute_available (sbitmap *, sbitmap *, sbitmap *, sbitmap *);
/* In predict.c */
extern bool maybe_hot_bb_p (const_basic_block);
extern bool maybe_hot_edge_p (edge);
extern bool probably_cold_bb_p (const_basic_block);
extern bool probably_never_executed_bb_p (const_basic_block);
extern bool optimize_bb_for_size_p (const_basic_block);
extern bool optimize_bb_for_speed_p (const_basic_block);

2
gcc/postreload-gcse.c
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@ -1173,7 +1173,7 @@ eliminate_partially_redundant_loads (void)
continue;
/* Do not try anything on cold basic blocks. */
if (probably_cold_bb_p (bb))
if (optimize_bb_for_size_p (bb))
continue;
/* Reset the table of things changed since the start of the current

46
gcc/predict.c
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@ -110,7 +110,8 @@ static const struct predictor_info predictor_info[]= {
#undef DEF_PREDICTOR
/* Return TRUE if frequency FREQ is considered to be hot. */
static bool
static inline bool
maybe_hot_frequency_p (int freq)
{
if (!profile_info || !flag_branch_probabilities)
@ -127,17 +128,27 @@ maybe_hot_frequency_p (int freq)
return true;
}
/* Return TRUE if frequency FREQ is considered to be hot. */
static inline bool
maybe_hot_count_p (gcov_type count)
{
if (profile_status != PROFILE_READ)
return true;
/* Code executed at most once is not hot. */
if (profile_info->runs >= count)
return false;
return (count
> profile_info->sum_max / PARAM_VALUE (HOT_BB_COUNT_FRACTION));
}
/* Return true in case BB can be CPU intensive and should be optimized
for maximal performance. */
bool
maybe_hot_bb_p (const_basic_block bb)
{
if (profile_info && flag_branch_probabilities
&& (bb->count
< profile_info->sum_max / PARAM_VALUE (HOT_BB_COUNT_FRACTION)))
return false;
return maybe_hot_frequency_p (bb->frequency);
return maybe_hot_count_p (bb->count) || maybe_hot_frequency_p (bb->frequency);
}
/* Return true if the call can be hot. */
@ -167,28 +178,7 @@ cgraph_maybe_hot_edge_p (struct cgraph_edge *edge)
bool
maybe_hot_edge_p (edge e)
{
if (profile_info && flag_branch_probabilities
&& (e->count
< profile_info->sum_max / PARAM_VALUE (HOT_BB_COUNT_FRACTION)))
return false;
return maybe_hot_frequency_p (EDGE_FREQUENCY (e));
}
/* Return true in case BB is cold and should be optimized for size. */
bool
probably_cold_bb_p (const_basic_block bb)
{
if (profile_info && flag_branch_probabilities
&& (bb->count
< profile_info->sum_max / PARAM_VALUE (HOT_BB_COUNT_FRACTION)))
return true;
if ((!profile_info || !flag_branch_probabilities)
&& cfun->function_frequency == FUNCTION_FREQUENCY_UNLIKELY_EXECUTED)
return true;
if (bb->frequency < BB_FREQ_MAX / PARAM_VALUE (HOT_BB_FREQUENCY_FRACTION))
return true;
return false;
return maybe_hot_count_p (e->count) || maybe_hot_frequency_p (EDGE_FREQUENCY (e));
}
/* Return true in case BB is probably never executed. */