Date: Sun, 6 Mar 2011 22:28:19 +1100 (EST) From: Bruce Evans <brde@optusnet.com.au> To: Martin Matuska <mm@FreeBSD.org> Cc: freebsd-bugs@FreeBSD.org, FreeBSD-gnats-submit@FreeBSD.org Subject: Re: gnu/155309: [PATCH] gcc: backport bswap32() and bswap64() Message-ID: <20110306222256.Y1086@besplex.bde.org> In-Reply-To: <20110306104825.8B860F1DEF@mail2.vx.sk> References: <20110306104825.8B860F1DEF@mail2.vx.sk>
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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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