8314130: [Lilliput] Make loadNKlassCompactHeaders not use a TEMP register

Reviewed-by: shade

Author: rkennke

src/hotspot/cpu/aarch64/aarch64.ad

@@ -7333,7 +7333,7 @@ instruct loadNKlass(iRegNNoSp dst, memory4 mem)
 instruct loadNKlassLilliput(iRegNNoSp dst, memory4 mem, rFlagsReg cr)
 %{
   match(Set dst (LoadNKlass mem));
-  effect(TEMP_DEF dst, KILL cr);
+  effect(KILL cr);
   predicate(!needs_acquiring_load(n) && UseCompactObjectHeaders);
 
   ins_cost(4 * INSN_COST);

src/hotspot/cpu/x86/x86_64.ad

@@ -5329,7 +5329,7 @@ instruct loadNKlassLilliput(rRegN dst, indOffset8 mem, rFlagsReg cr)
 %{
   predicate(UseCompactObjectHeaders);
   match(Set dst (LoadNKlass mem));
-  effect(TEMP_DEF dst, KILL cr);
+  effect(KILL cr);
   ins_cost(125); // XXX
   format %{ "movl    $dst, $mem\t# compressed klass ptr" %}
   ins_encode %{