--- a/hotspot/src/cpu/sparc/vm/sparc.ad	Thu Oct 13 14:08:15 2011 -0700
+++ b/hotspot/src/cpu/sparc/vm/sparc.ad	Fri Oct 14 10:07:28 2011 -0700
@@ -10476,7 +10476,7 @@
   ins_pipe(ialu_reg);
 %}
 
-instruct countTrailingZerosL(iRegI dst, iRegL src, flagsReg cr) %{
+instruct countTrailingZerosL(iRegIsafe dst, iRegL src, flagsReg cr) %{
   predicate(UsePopCountInstruction);  // See Matcher::match_rule_supported
   match(Set dst (CountTrailingZerosL src));
   effect(TEMP dst, KILL cr);