diff -r 10c237e58446 -r aefa2e84b424 src/cpu/ppc/vm/ppc.ad
--- a/src/cpu/ppc/vm/ppc.ad	Wed Mar 18 18:12:01 2015 -0700
+++ b/src/cpu/ppc/vm/ppc.ad	Thu Mar 19 19:53:34 2015 +0100
@@ -4418,11 +4418,11 @@
   interface(CONST_INTER);
 %}
 
-// constant 'float +0.0'.
+// Float Immediate: +0.0f.
 operand immF_0() %{
-  predicate((n->getf() == 0) &&
-            (fpclassify(n->getf()) == FP_ZERO) && (signbit(n->getf()) == 0));
+  predicate(jint_cast(n->getf()) == 0);
   match(ConF);
+  
   op_cost(0);
   format %{ %}
   interface(CONST_INTER);