Date: Sun, 6 Mar 2011 11:30:14 GMT From: Bruce Evans <brde@optusnet.com.au> To: freebsd-bugs@FreeBSD.org Subject: Re: gnu/155309: [PATCH] gcc: backport bswap32() and bswap64() Message-ID: <201103061130.p26BUEPk013151@freefall.freebsd.org>
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The following reply was made to PR gnu/155309; it has been noted by GNATS. From: Bruce Evans <brde@optusnet.com.au> To: Martin Matuska <mm@FreeBSD.org> Cc: FreeBSD-gnats-submit@FreeBSD.org, freebsd-bugs@FreeBSD.org Subject: Re: gnu/155309: [PATCH] gcc: backport bswap32() and bswap64() Date: Sun, 6 Mar 2011 22:28:19 +1100 (EST) On Sun, 6 Mar 2011, Martin Matuska wrote: >> Description: > In many ports, we have to deal with patching the missing bswap32() > and bswap64() functions. Er, we have these in endian.h. > The gcc-4.3 branch SVN revision is 118361, is GPLv2-licensed, > applies cleanly and is fully compatible with our code. However, gcc doesn't know how to turn a C expression for bswap*() into the bswap instruction. clang does. Does this patch fix that? Using the C expression in all cases allows cleaning endian.h files, except possibly on other arches that still need asm. Bruce
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