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From: Jung-uk Kim <jkim@FreeBSD.org>
Date: Wed, 28 Apr 2010 17:26:06 +0000 (UTC)
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Subject: svn commit: r207330 - head/sys/dev/sound/pcm
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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.
  
  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);
 }