--- a/src/cpu/x86/vm/c1_LIRGenerator_x86.cpp	Wed Dec 15 08:03:54 2010 -0800
+++ b/src/cpu/x86/vm/c1_LIRGenerator_x86.cpp	Thu Dec 16 09:31:55 2010 -0500
@@ -874,6 +874,10 @@
 
 void LIRGenerator::do_ArrayCopy(Intrinsic* x) {
   assert(x->number_of_arguments() == 5, "wrong type");
+
+  // Make all state_for calls early since they can emit code
+  CodeEmitInfo* info = state_for(x, x->state());
+
   LIRItem src(x->argument_at(0), this);
   LIRItem src_pos(x->argument_at(1), this);
   LIRItem dst(x->argument_at(2), this);
@@ -916,7 +920,6 @@
   ciArrayKlass* expected_type;
   arraycopy_helper(x, &flags, &expected_type);
 
-  CodeEmitInfo* info = state_for(x, x->state()); // we may want to have stack (deoptimization?)
   __ arraycopy(src.result(), src_pos.result(), dst.result(), dst_pos.result(), length.result(), tmp, expected_type, flags, info); // does add_safepoint
 }
 
@@ -1151,9 +1154,12 @@
     stub = new SimpleExceptionStub(Runtime1::throw_class_cast_exception_id, obj.result(), info_for_exception);
   }
   LIR_Opr reg = rlock_result(x);
+  LIR_Opr tmp3 = LIR_OprFact::illegalOpr;
+  if (!x->klass()->is_loaded() || UseCompressedOops) {
+    tmp3 = new_register(objectType);
+  }
   __ checkcast(reg, obj.result(), x->klass(),
-               new_register(objectType), new_register(objectType),
-               !x->klass()->is_loaded() ? new_register(objectType) : LIR_OprFact::illegalOpr,
+               new_register(objectType), new_register(objectType), tmp3,
                x->direct_compare(), info_for_exception, patching_info, stub,
                x->profiled_method(), x->profiled_bci());
 }
@@ -1170,9 +1176,12 @@
     patching_info = state_for(x, x->state_before());
   }
   obj.load_item();
+  LIR_Opr tmp3 = LIR_OprFact::illegalOpr;
+  if (!x->klass()->is_loaded() || UseCompressedOops) {
+    tmp3 = new_register(objectType);
+  }
   __ instanceof(reg, obj.result(), x->klass(),
-                new_register(objectType), new_register(objectType),
-                !x->klass()->is_loaded() ? new_register(objectType) : LIR_OprFact::illegalOpr,
+                new_register(objectType), new_register(objectType), tmp3,
                 x->direct_compare(), patching_info, x->profiled_method(), x->profiled_bci());
 }