From mboxrd@z Thu Jan 1 00:00:00 1970 From: Pablo de Lara Subject: [PATCH] hash: fix library compilation for CPU with no SSE4.1 Date: Wed, 15 Jul 2015 13:40:43 +0100 Message-ID: <1436964043-5729-3-git-send-email-pablo.de.lara.guarch@intel.com> References: <1436964043-5729-1-git-send-email-pablo.de.lara.guarch@intel.com> To: dev@dpdk.org Return-path: Received: from mga14.intel.com (mga14.intel.com [192.55.52.115]) by dpdk.org (Postfix) with ESMTP id CA24B595E for ; Wed, 15 Jul 2015 14:40:46 +0200 (CEST) Received: from sivswdev02.ir.intel.com (sivswdev02.ir.intel.com [10.237.217.46]) by irvmail001.ir.intel.com (8.14.3/8.13.6/MailSET/Hub) with ESMTP id t6FCei9q012569 for ; Wed, 15 Jul 2015 13:40:44 +0100 Received: from sivswdev02.ir.intel.com (localhost [127.0.0.1]) by sivswdev02.ir.intel.com with ESMTP id t6FCeiWL005782 for ; Wed, 15 Jul 2015 13:40:44 +0100 Received: (from pdelarax@localhost) by sivswdev02.ir.intel.com with id t6FCeiCi005778 for dev@dpdk.org; Wed, 15 Jul 2015 13:40:44 +0100 In-Reply-To: <1436964043-5729-1-git-send-email-pablo.de.lara.guarch@intel.com> List-Id: patches and discussions about DPDK List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" _mm_test_all_zeros is not available for CPUs with no SSE4.1, therefore, DPDK would not build. This patch adds an alternative for this, using _mm_cmpeq_epi32 and _mm_movemask_epi8. Fixes: 48a399119619 ("hash: replace with cuckoo hash implementation") Signed-off-by: Pablo de Lara --- lib/librte_hash/rte_cuckoo_hash.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/lib/librte_hash/rte_cuckoo_hash.c b/lib/librte_hash/rte_cuckoo_hash.c index 80cb126..0f33376 100644 --- a/lib/librte_hash/rte_cuckoo_hash.c +++ b/lib/librte_hash/rte_cuckoo_hash.c @@ -1128,9 +1128,15 @@ rte_hash_k16_cmp_eq(const void *key1, const void *key2, size_t key_len __rte_unu { const __m128i k1 = _mm_loadu_si128((const __m128i *) key1); const __m128i k2 = _mm_loadu_si128((const __m128i *) key2); +#ifndef RTE_MACHINE_CPUFLAG_SSE4_1 const __m128i x = _mm_xor_si128(k1, k2); return !_mm_test_all_zeros(x, x); +#else + const __m128i x = _mm_cmpeq_epi32(k1, k2); + + return (_mm_movemask_epi8(x) != 0xffff); +#endif } static int -- 2.4.2