From owner-svn-src-all@freebsd.org Fri May 4 04:00:49 2018 Return-Path: Delivered-To: svn-src-all@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 3791AFC6131; Fri, 4 May 2018 04:00:49 +0000 (UTC) (envelope-from mjg@FreeBSD.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client CN "mxrelay.nyi.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id C8FD87C0E0; Fri, 4 May 2018 04:00:48 +0000 (UTC) (envelope-from mjg@FreeBSD.org) Received: from repo.freebsd.org (repo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:0]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id C2D76171F; Fri, 4 May 2018 04:00:48 +0000 (UTC) (envelope-from mjg@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id w4440mJd025060; Fri, 4 May 2018 04:00:48 GMT (envelope-from mjg@FreeBSD.org) Received: (from mjg@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id w4440moH025057; Fri, 4 May 2018 04:00:48 GMT (envelope-from mjg@FreeBSD.org) Message-Id: <201805040400.w4440moH025057@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: mjg set sender to mjg@FreeBSD.org using -f From: Mateusz Guzik Date: Fri, 4 May 2018 04:00:48 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r333240 - in head/sys: powerpc/powerpc sys X-SVN-Group: head X-SVN-Commit-Author: mjg X-SVN-Commit-Paths: in head/sys: powerpc/powerpc sys X-SVN-Commit-Revision: 333240 X-SVN-Commit-Repository: base MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: svn-src-all@freebsd.org X-Mailman-Version: 2.1.25 Precedence: list List-Id: "SVN commit messages for the entire src tree \(except for " user" and " projects" \)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 04 May 2018 04:00:49 -0000 Author: mjg Date: Fri May 4 04:00:48 2018 New Revision: 333240 URL: https://svnweb.freebsd.org/changeset/base/333240 Log: Allow __builtin_memmove instead of bcopy for small buffers of known size See r323329 for an explanation why this is a good idea. Modified: head/sys/powerpc/powerpc/bcopy.c head/sys/sys/systm.h Modified: head/sys/powerpc/powerpc/bcopy.c ============================================================================== --- head/sys/powerpc/powerpc/bcopy.c Fri May 4 03:44:12 2018 (r333239) +++ head/sys/powerpc/powerpc/bcopy.c Fri May 4 04:00:48 2018 (r333240) @@ -143,7 +143,7 @@ done: } void -bcopy(const void *src0, void *dst0, size_t length) +(bcopy)(const void *src0, void *dst0, size_t length) { memcpy(dst0, src0, length); Modified: head/sys/sys/systm.h ============================================================================== --- head/sys/sys/systm.h Fri May 4 03:44:12 2018 (r333239) +++ head/sys/sys/systm.h Fri May 4 04:00:48 2018 (r333240) @@ -259,6 +259,12 @@ void hexdump(const void *ptr, int length, const char * #define ovbcopy(f, t, l) bcopy((f), (t), (l)) void bcopy(const void * _Nonnull from, void * _Nonnull to, size_t len); +#define bcopy(from, to, len) ({ \ + if (__builtin_constant_p(len) && (len) <= 64) \ + __builtin_memmove((to), (from), (len)); \ + else \ + bcopy((from), (to), (len)); \ +}) void bzero(void * _Nonnull buf, size_t len); #define bzero(buf, len) ({ \ if (__builtin_constant_p(len) && (len) <= 64) \