From patchwork Mon Feb 20 16:48:09 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Adhemerval Zanella Netto X-Patchwork-Id: 1745162 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=sourceware.org (client-ip=2620:52:3:1:0:246e:9693:128c; helo=sourceware.org; envelope-from=libc-alpha-bounces+incoming=patchwork.ozlabs.org@sourceware.org; receiver=) Authentication-Results: legolas.ozlabs.org; dkim=pass (1024-bit key; secure) header.d=sourceware.org header.i=@sourceware.org header.a=rsa-sha256 header.s=default header.b=yoC3SrHB; dkim-atps=neutral Received: from sourceware.org (server2.sourceware.org [IPv6:2620:52:3:1:0:246e:9693:128c]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-384) server-digest SHA384) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4PL7fC1r1Cz23yV for ; Tue, 21 Feb 2023 03:48:35 +1100 (AEDT) Received: from server2.sourceware.org (localhost [IPv6:::1]) by sourceware.org (Postfix) with ESMTP id 1D1DF3858C5F for ; Mon, 20 Feb 2023 16:48:31 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 1D1DF3858C5F DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sourceware.org; s=default; t=1676911711; bh=+K0VnuusOW2xAxxhJbuTdz8urQeciVXDRoes1fD35a8=; h=To:Subject:Date:List-Id:List-Unsubscribe:List-Archive:List-Post: List-Help:List-Subscribe:From:Reply-To:From; b=yoC3SrHBrVHVUjocjeIj1VSGpFJdHyrya02I1HCTt4U2aISGmbgN9bJICH+Jc4GzX wQSvSZ+rqCI2hk9q/99EahlmSA/ffgXIPnDvemgLah/1TPqaU+4THLA60NJ/e93UIl wAx/TAl0sWEbVCwbycgGoFio9jD/MBoezLqbV1X4= X-Original-To: libc-alpha@sourceware.org Delivered-To: libc-alpha@sourceware.org Received: from mail-ot1-x32e.google.com (mail-ot1-x32e.google.com [IPv6:2607:f8b0:4864:20::32e]) by sourceware.org (Postfix) with ESMTPS id DCDD73858D1E for ; Mon, 20 Feb 2023 16:48:14 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.2 sourceware.org DCDD73858D1E Received: by mail-ot1-x32e.google.com with SMTP id e20-20020a9d5614000000b00690ee4a5febso369276oti.0 for ; Mon, 20 Feb 2023 08:48:14 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:mime-version:message-id:date:subject:to :from:x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=+K0VnuusOW2xAxxhJbuTdz8urQeciVXDRoes1fD35a8=; b=09KuDdzIrEMVgkb/AdoXprt8lDYOBonizQIAiubLfTXGcjItcDhGFyTV86FmwU9iic PAEqp5UaDZpRg9lsBP9K7tWPXPszWyrJxy0dqLqGWLD0pFWLirnQslixXpOIdw1NOKI/ ElqHhHAAApMcq709xFcMGXk1V7noklnw7Djzf9T2mgsx/1cE6C/Ro/y1bYOaMtmCfqwQ oYgAd7dOoXl2/89GEAi5/r/IW047wNaNk3MvsKfwr+3e4SQI2rHsMSc15VVJ00S0BGdu tgqSExsrWmJ2v6ZczErfOZs6M0Q+X5oTNMgSqnX7dlOWcfXBxxspxInc6/uOS76YL9Yk /TKA== X-Gm-Message-State: AO0yUKXjg/fOeqTtMgnLmfS+ZdOsrgFs3bv463MIoubZg3d8NmvMJG2q fwflfKwnaX0DWmeCuAnSQjOfq3CYs7izu6l7FIE= X-Google-Smtp-Source: AK7set+JyKsXu0yOKRpgzGLoMln/6LdiiaSm78qXUDq0DhHLC6KzWVpVr/I5vjGNIpAxpY+h3ll0rQ== X-Received: by 2002:a05:6830:549:b0:690:efc2:729d with SMTP id l9-20020a056830054900b00690efc2729dmr6226794otb.36.1676911693738; Mon, 20 Feb 2023 08:48:13 -0800 (PST) Received: from mandiga.. ([2804:1b3:a7c3:3a5:41b1:cd01:745d:be16]) by smtp.gmail.com with ESMTPSA id s12-20020a9d758c000000b00690f6d9a737sm3222993otk.8.2023.02.20.08.48.12 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 20 Feb 2023 08:48:13 -0800 (PST) To: libc-alpha@sourceware.org, Szabolcs Nagy Subject: [PATCH] arm: Support gcc older than 10 for find_zero_all Date: Mon, 20 Feb 2023 13:48:09 -0300 Message-Id: <20230220164809.2581181-1-adhemerval.zanella@linaro.org> X-Mailer: git-send-email 2.34.1 MIME-Version: 1.0 X-Spam-Status: No, score=-12.7 required=5.0 tests=BAYES_00, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, DKIM_VALID_EF, GIT_PATCH_0, RCVD_IN_DNSWL_NONE, SPF_HELO_NONE, SPF_PASS, TXREP autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on server2.sourceware.org X-BeenThere: libc-alpha@sourceware.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Libc-alpha mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-Patchwork-Original-From: Adhemerval Zanella via Libc-alpha From: Adhemerval Zanella Netto Reply-To: Adhemerval Zanella Errors-To: libc-alpha-bounces+incoming=patchwork.ozlabs.org@sourceware.org Sender: "Libc-alpha" __builtin_arm_uqsub8 is only available on gcc newer or equal than 10. Checked on arm-linux-gnueabihf built with gcc 9. Reviewed-by: Richard Henderson --- sysdeps/arm/armv6t2/string-fza.h | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/sysdeps/arm/armv6t2/string-fza.h b/sysdeps/arm/armv6t2/string-fza.h index 76274ccca7..d85ce86434 100644 --- a/sysdeps/arm/armv6t2/string-fza.h +++ b/sysdeps/arm/armv6t2/string-fza.h @@ -33,7 +33,13 @@ find_zero_all (op_t x) /* Use unsigned saturated subtraction from 1 in each byte. That leaves 1 for every byte that was zero. */ op_t ones = repeat_bytes (0x01); +#if __GNUC_PREREQ (10, 0) return __builtin_arm_uqsub8 (ones, x); +#else + op_t ret; + asm ("uqsub8 %0,%1,%2" : "=r"(ret) : "r"(ones), "r"(x)); + return ret; +#endif } /* Identify bytes that are equal between X1 and X2. */