On Wed Apr 28 10, Jung-uk Kim wrote: > Author: jkim > Date: Wed Apr 28 17:26:05 2010 > New Revision: 207330 > URL: http://svn.freebsd.org/changeset/base/207330 > > Log: > Remove dead code. Calculated greatest common divisor was not used at all. > On top of that, LLVM+Clang mis-compiles this code because of its register > allocator bug.
for future references: the bug jkim was refering to was http://llvm.org/bugs/show_bug.cgi?id=6941. it's been fixed now so even with this dead code in buffer.c no problems should occur when compiled with clang. cheers. alex > > Analyzed by: Andrew Reilly (areilly at bigpond dot net dot au) > Reviewed by: ariff, rdivacky > MFC after: 3 days > > Modified: > head/sys/dev/sound/pcm/buffer.c > > Modified: head/sys/dev/sound/pcm/buffer.c > ============================================================================== > --- head/sys/dev/sound/pcm/buffer.c Wed Apr 28 15:38:01 2010 > (r207329) > +++ head/sys/dev/sound/pcm/buffer.c Wed Apr 28 17:26:05 2010 > (r207330) > @@ -568,7 +568,6 @@ sndbuf_updateprevtotal(struct snd_dbuf * > unsigned int > snd_xbytes(unsigned int v, unsigned int from, unsigned int to) > { > - unsigned int w, x, y; > > if (from == to) > return v; > @@ -576,16 +575,6 @@ snd_xbytes(unsigned int v, unsigned int > if (from == 0 || to == 0 || v == 0) > return 0; > > - x = from; > - y = to; > - while (y != 0) { > - w = x % y; > - x = y; > - y = w; > - } > - from /= x; > - to /= x; > - > return (unsigned int)(((u_int64_t)v * to) / from); > } > -- a13x _______________________________________________ svn-src-head@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/svn-src-head To unsubscribe, send any mail to "svn-src-head-unsubscr...@freebsd.org"
