Special case the recording of constant pool entries in the slot buffer.

src/mips/assembler-mips-inl.h

Index: src/mips/assembler-mips-inl.h
diff --git a/src/mips/assembler-mips-inl.h b/src/mips/assembler-mips-inl.h
index 514b3aaa4f00247abdf680935b18edaedcbe3efc..04c79cb8d22fd061fb6db573563aaf1071e06e1b 100644
--- a/src/mips/assembler-mips-inl.h
+++ b/src/mips/assembler-mips-inl.h
@@ -156,6 +156,12 @@ Address RelocInfo::target_address_address() {
 }
 
 
+Address RelocInfo::constant_pool_entry_address() {
+  UNREACHABLE();
+  return NULL;
+}
+
+
 int RelocInfo::target_address_size() {
   return Assembler::kSpecialTargetSize;
 }