diff a/src/hotspot/cpu/zero/sharedRuntime_zero.cpp b/src/hotspot/cpu/zero/sharedRuntime_zero.cpp
--- a/src/hotspot/cpu/zero/sharedRuntime_zero.cpp
+++ b/src/hotspot/cpu/zero/sharedRuntime_zero.cpp
@@ -137,10 +137,10 @@
   ShouldNotCallThis();
   return 0;
 }
 
 int SharedRuntime::vector_calling_convention(VMRegPair *regs,
-                                             int num_bits,
-                                             int total_args_passed) {
+                                             uint num_bits,
+                                             uint total_args_passed) {
   ShouldNotCallThis();
   return 0;
 }