Unify and simplify the FastCloneShallowArrayStub

src/arm64/code-stubs-arm64.cc

Index: src/arm64/code-stubs-arm64.cc
diff --git a/src/arm64/code-stubs-arm64.cc b/src/arm64/code-stubs-arm64.cc
index c037a81116b085a380132598700e41270ce13ba8..293362a6bdb36aab34cbdef37184e230e5d4fb6e 100644
--- a/src/arm64/code-stubs-arm64.cc
+++ b/src/arm64/code-stubs-arm64.cc
@@ -88,6 +88,11 @@ void FastCloneShallowArrayStub::InitializeInterfaceDescriptor(
   static Register registers[] = { x3, x2, x1 };
   descriptor->register_param_count_ = sizeof(registers) / sizeof(registers[0]);
   descriptor->register_params_ = registers;
+  static Representation representations[] = {
+    Representation::Tagged(),
+    Representation::Smi(),
+    Representation::Tagged() };
+  descriptor->register_param_representations_ = representations;
   descriptor->deoptimization_handler_ =
       Runtime::FunctionForId(
           Runtime::kHiddenCreateArrayLiteralStubBailout)->entry;
@@ -253,6 +258,11 @@ static void InitializeArrayConstructorDescriptor(
     descriptor->register_param_count_ =
         sizeof(registers_variable_args) / sizeof(registers_variable_args[0]);
     descriptor->register_params_ = registers_variable_args;
+    static Representation representations[] = {
+        Representation::Tagged(),
+        Representation::Tagged(),
+        Representation::Integer32() };
+    descriptor->register_param_representations_ = representations;
   }
 
   descriptor->hint_stack_parameter_count_ = constant_stack_parameter_count;
@@ -299,6 +309,10 @@ static void InitializeInternalArrayConstructorDescriptor(
     descriptor->register_param_count_ =
         sizeof(registers_variable_args) / sizeof(registers_variable_args[0]);
     descriptor->register_params_ = registers_variable_args;
+    static Representation representations[] = {
+        Representation::Tagged(),
+        Representation::Integer32() };
+    descriptor->register_param_representations_ = representations;
   }
 
   descriptor->hint_stack_parameter_count_ = constant_stack_parameter_count;