Date: Tue, 21 Sep 2010 12:57:44 +0000 (UTC) From: Tijl Coosemans <tijl@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-7@freebsd.org Subject: svn commit: r212963 - stable/7/gnu/lib/libstdc++ Message-ID: <201009211257.o8LCvi4a094950@svn.freebsd.org>
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Author: tijl Date: Tue Sep 21 12:57:43 2010 New Revision: 212963 URL: http://svn.freebsd.org/changeset/base/212963 Log: MFC r212286: GCC defines built-ins for atomic instructions found on i486 and higher. Because FreeBSD no longer supports the 80386 cpu all code targeting FreeBSD/i386 necessarily runs on i486 or higher so the compiler built-ins can be used by default inside libstdc++ and in C++ headers. This allows newly compiled C++ code to inline some atomic operations. Old binaries continue to use libstdc++ functions. Approved by: kib (mentor) Modified: stable/7/gnu/lib/libstdc++/Makefile stable/7/gnu/lib/libstdc++/config.h Directory Properties: stable/7/gnu/lib/libstdc++/ (props changed) Modified: stable/7/gnu/lib/libstdc++/Makefile ============================================================================== --- stable/7/gnu/lib/libstdc++/Makefile Tue Sep 21 12:55:20 2010 (r212962) +++ stable/7/gnu/lib/libstdc++/Makefile Tue Sep 21 12:57:43 2010 (r212963) @@ -82,7 +82,7 @@ ATOMICITY_H= ${SRCDIR}/config/cpu/${MARC ATOMICITY_H= ${SRCDIR}/config/cpu/generic/atomicity_mutex/atomicity.h .endif -.if ${MACHINE_ARCH} == "amd64" +.if ${MACHINE_ARCH} == "amd64" || ${MACHINE_ARCH} == "i386" .if exists(${SRCDIR}/config/cpu/generic/atomicity_builtins/atomicity.h) ATOMICITY_H= ${SRCDIR}/config/cpu/generic/atomicity_builtins/atomicity.h .endif Modified: stable/7/gnu/lib/libstdc++/config.h ============================================================================== --- stable/7/gnu/lib/libstdc++/config.h Tue Sep 21 12:55:20 2010 (r212962) +++ stable/7/gnu/lib/libstdc++/config.h Tue Sep 21 12:57:43 2010 (r212963) @@ -671,7 +671,7 @@ /* #undef VERSION */ /* Define if builtin atomic operations are supported on this host. */ -#if defined(__amd64__) +#if defined(__amd64__) || defined(__i386__) #define _GLIBCXX_ATOMIC_BUILTINS 1 #endif
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