From 2456f752e32664bbfb802e019b15e9096ead0901 Mon Sep 17 00:00:00 2001
From: Austin Donisan <austin.donisan@gmail.com>
Date: Fri, 2 Feb 2024 04:04:55 +0000
Subject: [PATCH] remove unecessary xor

---
 1brc.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/1brc.c b/1brc.c
index 93dc634..9eb72b7 100644
--- a/1brc.c
+++ b/1brc.c
@@ -918,7 +918,6 @@ __attribute__((always_inline)) inline __m256i hash_cities(__m256i a, __m256i b,
   __m256i acegbdfh = (__m256i) _mm256_shuffle_ps((__m256)acbd, (__m256)egfh, 0x88);
 
   __m256i hash = _mm256_madd_epi16(acegbdfh, acegbdfh);
-  hash = _mm256_xor_si256(hash, acegbdfh);
   __m256i hash_mask = _mm256_set1_epi32(HASH_SHORT_MASK);
   return _mm256_and_si256(hash, hash_mask);
 }