MIPS: Introduce FLAG_vector_ics.

src/mips/ic-mips.cc

Index: src/mips/ic-mips.cc
diff --git a/src/mips/ic-mips.cc b/src/mips/ic-mips.cc
index 4ae0be2e603f133b3e3fd559830b32c5976496a3..2986f2598a788200256c03ad9cc347855fe2b675 100644
--- a/src/mips/ic-mips.cc
+++ b/src/mips/ic-mips.cc
@@ -512,6 +512,18 @@ const Register LoadIC::ReceiverRegister() { return a1; }
 const Register LoadIC::NameRegister() { return a2; }
 
 
+const Register LoadIC::SlotRegister() {
+  ASSERT(FLAG_vector_ics);
+  return a0;
+}
+
+
+const Register LoadIC::VectorRegister() {
+  ASSERT(FLAG_vector_ics);
+  return a3;
+}
+
+
 const Register StoreIC::ReceiverRegister() { return a1; }
 const Register StoreIC::NameRegister() { return a2; }
 const Register StoreIC::ValueRegister() { return a0; }