Revert 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 6f902c67879a531f6dfcd1c90bdda443efd50933..68a1ad8fb0d712fc122706e959353d8262832c4d 100644
--- a/src/ia32/code-stubs-ia32.cc
+++ b/src/ia32/code-stubs-ia32.cc
@@ -86,11 +86,6 @@ 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;
@@ -222,11 +217,6 @@ 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;
@@ -254,10 +244,6 @@ 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;