+2004-01-27 J"orn Rennecke <joern.rennecke@superh.com>
+
+ * coverage.c (get_coverage_counts): Give a different message
+ if flag_guess_branch_prob is set.
+ * predict.c (counts_to_freqs): Return an int.
+ (estimate_bb_frequencies): If counts_to_freqs returns zero,
+ calculate estimates.
+
2004-01-27 Kazu Hirata <kazu@cs.umass.edu>
* config/iq2000/iq2000-protos.h: Remove the prototype for
static int warned = 0;
if (!warned++)
- inform ("file %s not found, execution counts assumed to be zero",
+ inform ((flag_guess_branch_prob
+ ? "file %s not found, execution counts estimated"
+ : "file %s not found, execution counts assumed to be zero"),
da_file_name);
return NULL;
}
static void estimate_loops_at_level (struct loop *loop);
static void propagate_freq (struct loop *);
static void estimate_bb_frequencies (struct loops *);
-static void counts_to_freqs (void);
+static int counts_to_freqs (void);
static void process_note_predictions (basic_block, int *);
static void process_note_prediction (basic_block, int *, int, int);
static bool last_basic_block_p (basic_block);
}
}
-/* Convert counts measured by profile driven feedback to frequencies. */
+/* Convert counts measured by profile driven feedback to frequencies.
+ Return nonzero iff there was any nonzero execution count. */
-static void
+static int
counts_to_freqs (void)
{
- gcov_type count_max = 1;
+ gcov_type count_max, true_count_max = 0;
basic_block bb;
FOR_EACH_BB (bb)
- count_max = MAX (bb->count, count_max);
+ true_count_max = MAX (bb->count, true_count_max);
+ count_max = MAX (true_count_max, 1);
FOR_BB_BETWEEN (bb, ENTRY_BLOCK_PTR, NULL, next_bb)
bb->frequency = (bb->count * BB_FREQ_MAX + count_max / 2) / count_max;
+ return true_count_max;
}
/* Return true if function is likely to be expensive, so there is no point to
basic_block bb;
sreal freq_max;
- if (flag_branch_probabilities)
- counts_to_freqs ();
- else
+ if (!flag_branch_probabilities || !counts_to_freqs ())
{
static int real_values_initialized = 0;