From patchwork Wed Feb 6 14:58:47 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Adhemerval Zanella Netto X-Patchwork-Id: 31327 Received: (qmail 109503 invoked by alias); 6 Feb 2019 14:59:02 -0000 Mailing-List: contact libc-alpha-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Unsubscribe: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: libc-alpha-owner@sourceware.org Delivered-To: mailing list libc-alpha@sourceware.org Received: (qmail 109426 invoked by uid 89); 6 Feb 2019 14:59:02 -0000 Authentication-Results: sourceware.org; auth=none X-Spam-SWARE-Status: No, score=-26.9 required=5.0 tests=BAYES_00, GIT_PATCH_0, GIT_PATCH_1, GIT_PATCH_2, GIT_PATCH_3, RCVD_IN_DNSWL_NONE, SPF_PASS autolearn=ham version=3.3.2 spammy= X-HELO: mail-qt1-f196.google.com DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:subject:date:message-id:in-reply-to:references; bh=S76CAuspJZwpLYcbne6+GnRiSQhycXIyeGCQWmiG0JA=; b=l7CP17sIkxnKw+GB4DWpZvN5Y66SvmlgCwVnCN2UZSECi88Id5yY9jDJUhapTZQJAp 05P1PQz49P5LAz1WJecyDdJrzY6d1dwpzF6kqd1/c1RZbFEzG7+jVaTM8JvMZD4eAJUS uY8NJymmqY9q6XMVLq1FTZ0oYVjQOPuwIKIyMdXT7mg4q6cGdbwlAA3JKzFfnIDrP3/P brAjzkqrLC7Wjok0EW36nupQC7+zLPKfe/1U0KV8vRpK5uj/vBnODilzfPgtk7skHHH2 mewkhjrKH/WMoYgK2WUEks912cG7QJ+n9eFesNgZZeZgoIxhHPdUy2A+uX9Xtkdfs5aa zsaA== Return-Path: From: Adhemerval Zanella To: libc-alpha@sourceware.org Subject: [PATCH 4/7] wcsmbs: optimize wcscpy Date: Wed, 6 Feb 2019 12:58:47 -0200 Message-Id: <20190206145850.22003-4-adhemerval.zanella@linaro.org> In-Reply-To: <20190206145850.22003-1-adhemerval.zanella@linaro.org> References: <20190206145850.22003-1-adhemerval.zanella@linaro.org> This patch rewrites wcscpy using wcslen and wmemcpy. This is similar to the optimization done on strcpy by b863d2bc4d. Checked on x86_64-linux-gnu. * wcsmbs/wcscpy.c (__wcpcpy): Rewrite using wcslen and wmemcpy. --- wcsmbs/wcscpy.c | 31 +------------------------------ 1 file changed, 1 insertion(+), 30 deletions(-) diff --git a/wcsmbs/wcscpy.c b/wcsmbs/wcscpy.c index 636bf6bd01..0ed4d4b3d7 100644 --- a/wcsmbs/wcscpy.c +++ b/wcsmbs/wcscpy.c @@ -19,7 +19,6 @@ #include #include - #ifdef WCSCPY # define __wcscpy WCSCPY #endif @@ -28,35 +27,7 @@ wchar_t * __wcscpy (wchar_t *dest, const wchar_t *src) { - wint_t c; - wchar_t *wcp; - - if (__alignof__ (wchar_t) >= sizeof (wchar_t)) - { - const ptrdiff_t off = dest - src - 1; - - wcp = (wchar_t *) src; - - do - { - c = *wcp++; - wcp[off] = c; - } - while (c != L'\0'); - } - else - { - wcp = dest; - - do - { - c = *src++; - *wcp++ = c; - } - while (c != L'\0'); - } - - return dest; + return __wmemcpy (dest, src, __wcslen (src) + 1); } #ifndef WCSCPY weak_alias (__wcscpy, wcscpy)