Reland r20974: Unify and simplify the FastCloneShallowArrayStub

src/ia32/code-stubs-ia32.cc

Index: src/ia32/code-stubs-ia32.cc
diff --git a/src/ia32/code-stubs-ia32.cc b/src/ia32/code-stubs-ia32.cc
index 2fde5acd731fc6837673a2eb1bdff93733805927..03c43611feadef2c2380ce9b40a9ef3a8fee132c 100644
--- a/src/ia32/code-stubs-ia32.cc
+++ b/src/ia32/code-stubs-ia32.cc
@@ -63,6 +63,11 @@ void FastCloneShallowArrayStub::InitializeInterfaceDescriptor(
   static Register registers[] = { eax, ebx, ecx };
   descriptor->register_param_count_ = 3;
   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;
@@ -194,6 +199,11 @@ static void InitializeArrayConstructorDescriptor(
     descriptor->stack_parameter_count_ = eax;
     descriptor->register_param_count_ = 3;
     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;
@@ -221,6 +231,10 @@ static void InitializeInternalArrayConstructorDescriptor(
     descriptor->stack_parameter_count_ = eax;
     descriptor->register_param_count_ = 2;
     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;