--- a/src/share/vm/c1/c1_LIRGenerator.cpp	Tue Jun 01 11:48:33 2010 -0700
+++ b/src/share/vm/c1/c1_LIRGenerator.cpp	Wed Jun 02 22:45:42 2010 -0700
@@ -1309,7 +1309,7 @@
   __ cmp(lir_cond_notEqual, flag_val, LIR_OprFact::intConst(0));
   if (!addr_opr->is_address()) {
     assert(addr_opr->is_register(), "must be");
-    addr_opr = LIR_OprFact::address(new LIR_Address(addr_opr, 0, T_OBJECT));
+    addr_opr = LIR_OprFact::address(new LIR_Address(addr_opr, T_OBJECT));
   }
   CodeStub* slow = new G1PreBarrierStub(addr_opr, pre_val, pre_val_patch_code,
                                         info);
@@ -1325,7 +1325,7 @@
       new_val->as_constant_ptr()->as_jobject() == NULL) return;
 
   if (!new_val->is_register()) {
-    LIR_Opr new_val_reg = new_pointer_register();
+    LIR_Opr new_val_reg = new_register(T_OBJECT);
     if (new_val->is_constant()) {
       __ move(new_val, new_val_reg);
     } else {
@@ -1337,7 +1337,7 @@
 
   if (addr->is_address()) {
     LIR_Address* address = addr->as_address_ptr();
-    LIR_Opr ptr = new_pointer_register();
+    LIR_Opr ptr = new_register(T_OBJECT);
     if (!address->index()->is_valid() && address->disp() == 0) {
       __ move(address->base(), ptr);
     } else {
@@ -1350,7 +1350,6 @@
 
   LIR_Opr xor_res = new_pointer_register();
   LIR_Opr xor_shift_res = new_pointer_register();
-
   if (TwoOperandLIRForm ) {
     __ move(addr, xor_res);
     __ logical_xor(xor_res, new_val, xor_res);
@@ -1368,7 +1367,7 @@
   }
 
   if (!new_val->is_register()) {
-    LIR_Opr new_val_reg = new_pointer_register();
+    LIR_Opr new_val_reg = new_register(T_OBJECT);
     __ leal(new_val, new_val_reg);
     new_val = new_val_reg;
   }
@@ -1377,7 +1376,7 @@
   __ cmp(lir_cond_notEqual, xor_shift_res, LIR_OprFact::intptrConst(NULL_WORD));
 
   CodeStub* slow = new G1PostBarrierStub(addr, new_val);
-  __ branch(lir_cond_notEqual, T_INT, slow);
+  __ branch(lir_cond_notEqual, LP64_ONLY(T_LONG) NOT_LP64(T_INT), slow);
   __ branch_destination(slow->continuation());
 }
 
@@ -2371,9 +2370,17 @@
   bool optimized = x->target_is_loaded() && x->target_is_final();
   assert(receiver->is_illegal() || receiver->is_equal(LIR_Assembler::receiverOpr()), "must match");
 
+  // JSR 292
+  // Preserve the SP over MethodHandle call sites.
+  ciMethod* target = x->target();
+  if (target->is_method_handle_invoke()) {
+    info->set_is_method_handle_invoke(true);
+    __ move(FrameMap::stack_pointer(), FrameMap::method_handle_invoke_SP_save_opr());
+  }
+
   switch (x->code()) {
     case Bytecodes::_invokestatic:
-      __ call_static(x->target(), result_register,
+      __ call_static(target, result_register,
                      SharedRuntime::get_resolve_static_call_stub(),
                      arg_list, info);
       break;
@@ -2383,17 +2390,17 @@
       // for final target we still produce an inline cache, in order
       // to be able to call mixed mode
       if (x->code() == Bytecodes::_invokespecial || optimized) {
-        __ call_opt_virtual(x->target(), receiver, result_register,
+        __ call_opt_virtual(target, receiver, result_register,
                             SharedRuntime::get_resolve_opt_virtual_call_stub(),
                             arg_list, info);
       } else if (x->vtable_index() < 0) {
-        __ call_icvirtual(x->target(), receiver, result_register,
+        __ call_icvirtual(target, receiver, result_register,
                           SharedRuntime::get_resolve_virtual_call_stub(),
                           arg_list, info);
       } else {
         int entry_offset = instanceKlass::vtable_start_offset() + x->vtable_index() * vtableEntry::size();
         int vtable_offset = entry_offset * wordSize + vtableEntry::method_offset_in_bytes();
-        __ call_virtual(x->target(), receiver, result_register, vtable_offset, arg_list, info);
+        __ call_virtual(target, receiver, result_register, vtable_offset, arg_list, info);
       }
       break;
     case Bytecodes::_invokedynamic: {
@@ -2432,7 +2439,7 @@
       // Load target MethodHandle from CallSite object.
       __ load(new LIR_Address(tmp, java_dyn_CallSite::target_offset_in_bytes(), T_OBJECT), receiver);
 
-      __ call_dynamic(x->target(), receiver, result_register,
+      __ call_dynamic(target, receiver, result_register,
                       SharedRuntime::get_resolve_opt_virtual_call_stub(),
                       arg_list, info);
       break;
@@ -2442,6 +2449,12 @@
       break;
   }
 
+  // JSR 292
+  // Restore the SP after MethodHandle call sites.
+  if (target->is_method_handle_invoke()) {
+    __ move(FrameMap::method_handle_invoke_SP_save_opr(), FrameMap::stack_pointer());
+  }
+
   if (x->type()->is_float() || x->type()->is_double()) {
     // Force rounding of results from non-strictfp when in strictfp
     // scope (or when we don't know the strictness of the callee, to