From 9104dad18b1d2587f475baea1b32ebd51bf0d6f6 Mon Sep 17 00:00:00 2001 From: Paul Eggert Date: Wed, 25 May 2022 11:23:39 -0700 Subject: [PATCH] sort: tune diff_reversed * src/sort.c (diff_reversed): Tune. On x86-64 with GCC, this saves a conditional branch and shortens the generated machine code. --- src/sort.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/src/sort.c b/src/sort.c index 0cd22f9313..0a6b557ac9 100644 --- a/src/sort.c +++ b/src/sort.c @@ -2607,7 +2607,7 @@ key_warnings (struct keyfield const *gkey, bool gkey_only) static int diff_reversed (int diff, bool reversed) { - return reversed ? (diff < 0 ? 1 : -diff) : diff; + return reversed ? (diff < 0) - (diff > 0) : diff; } /* Compare two lines A and B trying every key in sequence until there -- 2.47.2