PPC: Correctify instanceof and make it optimizable.

src/ppc/interface-descriptors-ppc.cc

Index: src/ppc/interface-descriptors-ppc.cc
diff --git a/src/ppc/interface-descriptors-ppc.cc b/src/ppc/interface-descriptors-ppc.cc
index ed2de891408649e6dadc0e85122253b2bdfc5f86..48adcf3fab58af961e48f5469320e27219f704a6 100644
--- a/src/ppc/interface-descriptors-ppc.cc
+++ b/src/ppc/interface-descriptors-ppc.cc
@@ -46,8 +46,8 @@ const Register StoreGlobalViaContextDescriptor::SlotRegister() { return r5; }
 const Register StoreGlobalViaContextDescriptor::ValueRegister() { return r3; }
 
 
-const Register InstanceofDescriptor::left() { return r3; }
-const Register InstanceofDescriptor::right() { return r4; }
+const Register InstanceOfDescriptor::LeftRegister() { return r4; }
+const Register InstanceOfDescriptor::RightRegister() { return r3; }
 
 
 const Register ArgumentsAccessReadDescriptor::index() { return r4; }