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libgcov: Fix merging of topn [PR92924]

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PR tree-optimization/92924
	* libgcov-merge.c (merge_topn_values_set): Fix merging.
This commit is contained in:
Jan Hubicka 2020-01-24 12:12:17 +01:00
parent ad8e2415d6
commit e3fe0070c1
1 changed files with 16 additions and 9 deletions
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21
libgcc/libgcov-merge.c
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@ -112,9 +112,11 @@ merge_topn_values_set (gcov_type *counters)
for (unsigned i = 0; i < GCOV_TOPN_VALUES; i++)
{
if (read_counters[2 * i + 1] == 0)
return;
continue;
unsigned j;
int slot = -1;
for (j = 0; j < GCOV_TOPN_VALUES; j++)
{
if (counters[2 * j] == read_counters[2 * i])
@ -123,21 +125,26 @@ merge_topn_values_set (gcov_type *counters)
break;
}
else if (counters[2 * j + 1] == 0)
{
counters[2 * j] += read_counters[2 * i];
counters[2 * j + 1] += read_counters[2 * i + 1];
break;
}
slot = j;
}
/* We haven't found a slot, bail out. */
if (j == GCOV_TOPN_VALUES)
{
if (slot > 0)
{
/* If we found empty slot, add the value. */
counters[2 * slot] = read_counters[2 * i];
counters[2 * slot + 1] = read_counters[2 * i + 1];
}
else
{
/* We haven't found a slot, bail out. */
counters[1] = -1;
return;
}
}
}
}
/* The profile merging function for choosing the most common value.
It is given an array COUNTERS of N_COUNTERS old counters and it