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Use new overflow-safe integer comparison functions.

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Commit 6b80394781 introduced integer comparison functions designed
to be as efficient as possible while avoiding overflow.  This
commit makes use of these functions in many of the in-tree qsort()
comparators to help ensure transitivity.  Many of these comparator
functions should also see a small performance boost.

Author: Mats Kindahl
Reviewed-by: Andres Freund, Fabrízio de Royes Mello
Discussion: https://postgr.es/m/CA%2B14426g2Wa9QuUpmakwPxXFWG_1FaY0AsApkvcTBy-YfS6uaw%40mail.gmail.com
This commit is contained in:
Nathan Bossart
2024-02-16 14:05:36 -06:00
parent 6b80394781
commit 3b42bdb471
34 changed files with 80 additions and 159 deletions
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9
contrib/intarray/_int_tool.c
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@ -7,6 +7,7 @@
#include "_int.h"
#include "catalog/pg_type.h"
#include "common/int.h"
#include "lib/qunique.h"
/* arguments are assumed sorted & unique-ified */
@ -396,15 +397,11 @@ int_to_intset(int32 elem)
int
compASC(const void *a, const void *b)
{
if (*(const int32 *) a == *(const int32 *) b)
return 0;
return (*(const int32 *) a > *(const int32 *) b) ? 1 : -1;
return pg_cmp_s32(*(const int32 *) a, *(const int32 *) b);
}
int
compDESC(const void *a, const void *b)
{
if (*(const int32 *) a == *(const int32 *) b)
return 0;
return (*(const int32 *) a < *(const int32 *) b) ? 1 : -1;
return pg_cmp_s32(*(const int32 *) b, *(const int32 *) a);
}