Add a little more information to a comment.
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@ -22,7 +22,7 @@
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*/
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*/
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#ifndef lint
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#ifndef lint
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static const char rcsid[] _U_ =
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static const char rcsid[] _U_ =
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"@(#) $Header: /tcpdump/master/libpcap/optimize.c,v 1.84 2004-12-18 08:52:09 guy Exp $ (LBL)";
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"@(#) $Header: /tcpdump/master/libpcap/optimize.c,v 1.85 2005-04-04 08:42:18 guy Exp $ (LBL)";
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#endif
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#endif
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#ifdef HAVE_CONFIG_H
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#ifdef HAVE_CONFIG_H
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@ -438,10 +438,12 @@ atomdef(s)
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* Compute the sets of registers used, defined, and killed by 'b'.
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* Compute the sets of registers used, defined, and killed by 'b'.
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*
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*
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* "Used" means that a statement in 'b' uses the register before any
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* "Used" means that a statement in 'b' uses the register before any
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* statement in 'b' defines it.
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* statement in 'b' defines it, i.e. it uses the value left in
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* that register by a predecessor block of this block.
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* "Defined" means that a statement in 'b' defines it.
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* "Defined" means that a statement in 'b' defines it.
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* "Killed" means that a statement in 'b' defines it before any
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* "Killed" means that a statement in 'b' defines it before any
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* statement in 'b' uses it.
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* statement in 'b' uses it, i.e. it kills the value left in that
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* register by a predecessor block of this block.
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*/
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*/
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static void
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static void
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compute_local_ud(b)
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compute_local_ud(b)
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