From patchwork Tue Jan 17 20:00:08 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: 63300 Return-Path: X-Original-To: patchwork@sourceware.org Delivered-To: patchwork@sourceware.org Received: from server2.sourceware.org (localhost [IPv6:::1]) by sourceware.org (Postfix) with ESMTP id 9E7EE3895FD1 for ; Tue, 17 Jan 2023 20:04:29 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 9E7EE3895FD1 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sourceware.org; s=default; t=1673985869; bh=rhAaYi6DtXp7uLXidJGinRFumCd11mLY/aet6ITY9Xc=; h=To:Subject:Date:In-Reply-To:References:List-Id:List-Unsubscribe: List-Archive:List-Post:List-Help:List-Subscribe:From:Reply-To: From; b=Q1ymO4qq2D1uh6E71ju1DDtHfNgY1J/FXxcjWazW99BKCsm93Bs9mdMIZCreF2uRn BRGifUtqkHiQEVoQXNZBddt1SHB867r/KbbqSLN+qNRZxBOSBSxJLJwza9WMCoPOJg 8MzgXnmarR6Nj74fM8rUNe4bYR4pqFMMPgnHXTMc= X-Original-To: libc-alpha@sourceware.org Delivered-To: libc-alpha@sourceware.org Received: from mail-oi1-x235.google.com (mail-oi1-x235.google.com [IPv6:2607:f8b0:4864:20::235]) by sourceware.org (Postfix) with ESMTPS id EE31F3857C71 for ; Tue, 17 Jan 2023 20:00:52 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.2 sourceware.org EE31F3857C71 Received: by mail-oi1-x235.google.com with SMTP id p133so11572114oig.8 for ; Tue, 17 Jan 2023 12:00:52 -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:references:in-reply-to :message-id:date:subject:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=rhAaYi6DtXp7uLXidJGinRFumCd11mLY/aet6ITY9Xc=; b=LObdOaiOIworH2x1rczNnRMz2NBfISNOe9Shz9txqPslqFslGQ7aQKppKyCrWlGjAG M5ABHMMBbGsB2idC51W2s2KwjHWdBt02ED9Y9h/0EyoCzEqn7h5xIB5DYy3DcmcazKaK xGGu6J0w7lqfIlbl+wx4LEatCo6pGlfupunBqv9K4OX4dbRNhHASyl7mwAra9urNVOU5 zo8uI23zp0N1XN94YU3KpqFok16PCsp2xL5UsOp9QnbGiRF9uvHoyZ1f0KbzTGJHHu5m hrAVFFlBBnJfGoIhAy+QqPnyyEtVx0Tm04PKBtOnn5FaRB4BpwxGLoqh+1aXuXXBbnt9 00vQ== X-Gm-Message-State: AFqh2kpPtr8npsf9mgxMDy8pg8QOTi53xntcMQYkncqDoCfD+Thr91LL 1SBhWsvcguMUniPWz84sSdcBykBmlpwmS6DOLZM= X-Google-Smtp-Source: AMrXdXvR+XSRo6t3g8pZjmtdWsr/+zkP3x2BUk9VTNHogh18EfrQyMqUNs8jrBZN2WogqVEiN6nSTQ== X-Received: by 2002:a05:6808:1a2a:b0:35e:66a4:1b19 with SMTP id bk42-20020a0568081a2a00b0035e66a41b19mr2850552oib.8.1673985651962; Tue, 17 Jan 2023 12:00:51 -0800 (PST) Received: from mandiga.. ([2804:1b3:a7c1:1652:fbfc:c80a:f5e8:5ed9]) by smtp.gmail.com with ESMTPSA id l10-20020a056808020a00b00360e46a1edasm15095866oie.22.2023.01.17.12.00.50 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 17 Jan 2023 12:00:51 -0800 (PST) To: libc-alpha@sourceware.org, Richard Henderson , Noah Goldstein Subject: [PATCH v9 16/22] sh: Add string-fzb.h Date: Tue, 17 Jan 2023 17:00:08 -0300 Message-Id: <20230117200014.1299923-17-adhemerval.zanella@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230117200014.1299923-1-adhemerval.zanella@linaro.org> References: <20230117200014.1299923-1-adhemerval.zanella@linaro.org> MIME-Version: 1.0 X-Spam-Status: No, score=-12.8 required=5.0 tests=BAYES_00, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, DKIM_VALID_EF, GIT_PATCH_0, KAM_SHORT, 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+patchwork=sourceware.org@sourceware.org Sender: "Libc-alpha" Use the SH cmp/str on has_{zero,eq,zero_eq}. Checked on sh4-linux-gnu. --- sysdeps/sh/string-fzb.h | 55 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 55 insertions(+) create mode 100644 sysdeps/sh/string-fzb.h diff --git a/sysdeps/sh/string-fzb.h b/sysdeps/sh/string-fzb.h new file mode 100644 index 0000000000..c8dd176362 --- /dev/null +++ b/sysdeps/sh/string-fzb.h @@ -0,0 +1,55 @@ +/* Zero byte detection; boolean. SH4 version. + Copyright (C) 2023 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + . */ + +#ifndef STRING_FZB_H +#define STRING_FZB_H 1 + +#include +#include + +/* Determine if any bytes within X1 and X2 are equal. */ +static __always_inline _Bool +has_eq (op_t x1, op_t x2) +{ + int ret; + + /* TODO: A compiler builtin for cmp/str would be much better. It is + difficult to use asm goto here, because the range of bt/bf are + quite small. */ + asm("cmp/str %1,%2\n\t" + "movt %0" + : "=r" (ret) : "r" (x1), "r" (x2) : "t"); + + return ret; +} + +/* Determine if any byte within X is zero. */ +static __always_inline _Bool +has_zero (op_t x) +{ + return has_eq (x, 0); +} + +/* Likewise, but for zeros in X1 and equal bytes between X1 and X2. */ +static __always_inline _Bool +has_zero_eq (op_t x1, op_t x2) +{ + return has_zero (x1) | has_eq (x1, x2); +} + +#endif /* STRING_FZB_H */