8276846: JDK-8273416 is incomplete for UseSSE=1

Reviewed-by: aph
Backport-of: a0b84453b087ff368a32b93729c5b30fda22ed48

Author: shipilev

src/hotspot/cpu/x86/x86_32.ad

@@ -7189,7 +7189,7 @@ instruct castLL( eRegL dst ) %{
 %}
 
 instruct castFF( regF dst ) %{
-  predicate(UseSSE >= 2);
+  predicate(UseSSE >= 1);
   match(Set dst (CastFF dst));
   format %{ "#castFF of $dst" %}
   ins_encode( /*empty encoding*/ );
@@ -7207,7 +7207,7 @@ instruct castDD( regD dst ) %{
 %}
 
 instruct castFF_PR( regFPR dst ) %{
-  predicate(UseSSE < 2);
+  predicate(UseSSE < 1);
   match(Set dst (CastFF dst));
   format %{ "#castFF of $dst" %}
   ins_encode( /*empty encoding*/ );