From 0726d91d70e4fb3f011b5642d016559268e7f66a Mon Sep 17 00:00:00 2001
From: serge-sans-paille <sergesanspaille@free.fr>
Date: Wed, 20 Aug 2025 20:58:11 +0200
Subject: [PATCH] Generate a swizzle-friendly mask during generic reduction

It changes nothing for clang which has a nice shuffle optimizer, but it
does help gcc a lot.

Somehow related to #1132
---
 include/xsimd/arch/common/xsimd_common_math.hpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/xsimd/arch/common/xsimd_common_math.hpp b/include/xsimd/arch/common/xsimd_common_math.hpp
index cdd35c5dd..10db980e2 100644
--- a/include/xsimd/arch/common/xsimd_common_math.hpp
+++ b/include/xsimd/arch/common/xsimd_common_math.hpp
@@ -2110,7 +2110,7 @@ namespace xsimd
             {
                 static constexpr T get(T i, T)
                 {
-                    return i >= N ? (i % 2) : i + N;
+                    return i < N ? (i + N) : ((i % N) + N);
                 }
             };