Store arguments descriptor in ICData. Remove loading of arguments descriptor at unoptimized call si…

runtime/vm/code_patcher_arm.cc

Index: runtime/vm/code_patcher_arm.cc
===================================================================
--- runtime/vm/code_patcher_arm.cc	(revision 24207)
+++ runtime/vm/code_patcher_arm.cc	(working copy)
@@ -16,7 +16,7 @@
                                            const Code& code) {
   ASSERT(code.ContainsInstructionAt(return_address));
   CallPattern call(return_address, code);
-  return call.ArgumentsDescriptor();
+  return call.ClosureArgumentsDescriptor();
 }
 
 
@@ -55,16 +55,12 @@
 
 uword CodePatcher::GetInstanceCallAt(uword return_address,
                                      const Code& code,
-                                     ICData* ic_data,
-                                     Array* arguments_descriptor) {
+                                     ICData* ic_data) {
   ASSERT(code.ContainsInstructionAt(return_address));
   CallPattern call(return_address, code);
   if (ic_data != NULL) {
     *ic_data = call.IcData();
   }
-  if (arguments_descriptor != NULL) {
-    *arguments_descriptor = call.ArgumentsDescriptor();
-  }
   return call.TargetAddress();
 }