--- a/hotspot/src/share/vm/ci/ciMethodData.hpp	Mon Oct 21 17:34:27 2013 -0700
+++ b/hotspot/src/share/vm/ci/ciMethodData.hpp	Tue Oct 22 09:51:47 2013 +0200
@@ -43,6 +43,7 @@
 class ciArgInfoData;
 class ciCallTypeData;
 class ciVirtualCallTypeData;
+class ciParametersTypeData;
 
 typedef ProfileData ciProfileData;
 
@@ -124,7 +125,7 @@
   ciTypeStackSlotEntries* args() const { return (ciTypeStackSlotEntries*)CallTypeData::args(); }
   ciReturnTypeEntry* ret() const { return (ciReturnTypeEntry*)CallTypeData::ret(); }
 
-  void translate_type_data_from(const ProfileData* data) {
+  void translate_from(const ProfileData* data) {
     if (has_arguments()) {
       args()->translate_type_data_from(data->as_CallTypeData()->args());
     }
@@ -290,6 +291,25 @@
   ciArgInfoData(DataLayout* layout) : ArgInfoData(layout) {};
 };
 
+class ciParametersTypeData : public ParametersTypeData {
+public:
+  ciParametersTypeData(DataLayout* layout) : ParametersTypeData(layout) {}
+
+  virtual void translate_from(const ProfileData* data) {
+    parameters()->translate_type_data_from(data->as_ParametersTypeData()->parameters());
+  }
+
+  ciTypeStackSlotEntries* parameters() const { return (ciTypeStackSlotEntries*)ParametersTypeData::parameters(); }
+
+  ciKlass* valid_parameter_type(int i) const {
+    return parameters()->valid_type(i);
+  }
+
+#ifndef PRODUCT
+  void print_data_on(outputStream* st) const;
+#endif
+};
+
 // ciMethodData
 //
 // This class represents a MethodData* in the HotSpot virtual
@@ -335,6 +355,10 @@
   // Coherent snapshot of original header.
   MethodData _orig;
 
+  // Dedicated area dedicated to parameters. Null if no parameter
+  // profiling for this method.
+  DataLayout* _parameters;
+
   ciMethodData(MethodData* md);
   ciMethodData();
 
@@ -403,6 +427,7 @@
   // If the compiler finds a profiled type that is known statically
   // for sure, set it in the MethodData
   void set_argument_type(int bci, int i, ciKlass* k);
+  void set_parameter_type(int i, ciKlass* k);
   void set_return_type(int bci, ciKlass* k);
 
   void load_data();
@@ -467,6 +492,10 @@
   bool is_arg_returned(int i) const;
   uint arg_modified(int arg) const;
 
+  ciParametersTypeData* parameters_type_data() const {
+    return _parameters != NULL ? new ciParametersTypeData(_parameters) : NULL;
+  }
+
   // Code generation helper
   ByteSize offset_of_slot(ciProfileData* data, ByteSize slot_offset_in_data);
   int      byte_offset_of_slot(ciProfileData* data, ByteSize slot_offset_in_data) { return in_bytes(offset_of_slot(data, slot_offset_in_data)); }