--- a/src/share/vm/c1/c1_LIRGenerator.cpp	Wed Dec 08 04:50:35 2010 -0800
+++ b/src/share/vm/c1/c1_LIRGenerator.cpp	Wed Dec 08 17:50:49 2010 -0800
@@ -836,11 +836,8 @@
   if (if_instr->should_profile()) {
     ciMethod* method = if_instr->profiled_method();
     assert(method != NULL, "method should be set if branch is profiled");
-    ciMethodData* md = method->method_data();
-    if (md == NULL) {
-      bailout("out of memory building methodDataOop");
-      return;
-    }
+    ciMethodData* md = method->method_data_or_null();
+    assert(md != NULL, "Sanity");
     ciProfileData* data = md->bci_to_data(if_instr->profiled_bci());
     assert(data != NULL, "must have profiling data");
     assert(data->is_BranchData(), "need BranchData for two-way branches");
@@ -864,11 +861,11 @@
     // MDO cells are intptr_t, so the data_reg width is arch-dependent.
     LIR_Opr data_reg = new_pointer_register();
     LIR_Address* data_addr = new LIR_Address(md_reg, data_offset_reg, data_reg->type());
-    __ move(LIR_OprFact::address(data_addr), data_reg);
+    __ move(data_addr, data_reg);
     // Use leal instead of add to avoid destroying condition codes on x86
     LIR_Address* fake_incr_value = new LIR_Address(data_reg, DataLayout::counter_increment, T_INT);
     __ leal(LIR_OprFact::address(fake_incr_value), data_reg);
-    __ move(data_reg, LIR_OprFact::address(data_addr));
+    __ move(data_reg, data_addr);
   }
 }
 
@@ -1009,12 +1006,12 @@
                    operand_for_instruction(phi));
 
   LIR_Opr thread_reg = getThreadPointer();
-  __ move(new LIR_Address(thread_reg, in_bytes(JavaThread::exception_oop_offset()), T_OBJECT),
-          exceptionOopOpr());
-  __ move(LIR_OprFact::oopConst(NULL),
-          new LIR_Address(thread_reg, in_bytes(JavaThread::exception_oop_offset()), T_OBJECT));
-  __ move(LIR_OprFact::oopConst(NULL),
-          new LIR_Address(thread_reg, in_bytes(JavaThread::exception_pc_offset()), T_OBJECT));
+  __ move_wide(new LIR_Address(thread_reg, in_bytes(JavaThread::exception_oop_offset()), T_OBJECT),
+               exceptionOopOpr());
+  __ move_wide(LIR_OprFact::oopConst(NULL),
+               new LIR_Address(thread_reg, in_bytes(JavaThread::exception_oop_offset()), T_OBJECT));
+  __ move_wide(LIR_OprFact::oopConst(NULL),
+               new LIR_Address(thread_reg, in_bytes(JavaThread::exception_pc_offset()), T_OBJECT));
 
   LIR_Opr result = new_register(T_OBJECT);
   __ move(exceptionOopOpr(), result);
@@ -1085,7 +1082,7 @@
 void LIRGenerator::do_Return(Return* x) {
   if (compilation()->env()->dtrace_method_probes()) {
     BasicTypeList signature;
-    signature.append(T_INT);    // thread
+    signature.append(LP64_ONLY(T_LONG) NOT_LP64(T_INT));    // thread
     signature.append(T_OBJECT); // methodOop
     LIR_OprList* args = new LIR_OprList();
     args->append(getThreadPointer());
@@ -1122,8 +1119,8 @@
     info = state_for(x);
   }
   __ move(new LIR_Address(rcvr.result(), oopDesc::klass_offset_in_bytes(), T_OBJECT), result, info);
-  __ move(new LIR_Address(result, Klass::java_mirror_offset_in_bytes() +
-                          klassOopDesc::klass_part_offset_in_bytes(), T_OBJECT), result);
+  __ move_wide(new LIR_Address(result, Klass::java_mirror_offset_in_bytes() +
+                               klassOopDesc::klass_part_offset_in_bytes(), T_OBJECT), result);
 }
 
 
@@ -1131,7 +1128,7 @@
 void LIRGenerator::do_currentThread(Intrinsic* x) {
   assert(x->number_of_arguments() == 0, "wrong type");
   LIR_Opr reg = rlock_result(x);
-  __ load(new LIR_Address(getThreadPointer(), in_bytes(JavaThread::threadObj_offset()), T_OBJECT), reg);
+  __ move_wide(new LIR_Address(getThreadPointer(), in_bytes(JavaThread::threadObj_offset()), T_OBJECT), reg);
 }
 
 
@@ -1908,7 +1905,11 @@
   if (x->may_be_unaligned() && (dst_type == T_LONG || dst_type == T_DOUBLE)) {
     __ unaligned_move(addr, reg);
   } else {
-    __ move(addr, reg);
+    if (dst_type == T_OBJECT && x->is_wide()) {
+      __ move_wide(addr, reg);
+    } else {
+      __ move(addr, reg);
+    }
   }
 }
 
@@ -2215,11 +2216,8 @@
   if (x->should_profile()) {
     ciMethod* method = x->profiled_method();
     assert(method != NULL, "method should be set if branch is profiled");
-    ciMethodData* md = method->method_data();
-    if (md == NULL) {
-      bailout("out of memory building methodDataOop");
-      return;
-    }
+    ciMethodData* md = method->method_data_or_null();
+    assert(md != NULL, "Sanity");
     ciProfileData* data = md->bci_to_data(x->profiled_bci());
     assert(data != NULL, "must have profiling data");
     int offset;
@@ -2287,7 +2285,7 @@
 
   if (compilation()->env()->dtrace_method_probes()) {
     BasicTypeList signature;
-    signature.append(T_INT);    // thread
+    signature.append(LP64_ONLY(T_LONG) NOT_LP64(T_INT));    // thread
     signature.append(T_OBJECT); // methodOop
     LIR_OprList* args = new LIR_OprList();
     args->append(getThreadPointer());
@@ -2352,11 +2350,14 @@
     } else {
       LIR_Address* addr = loc->as_address_ptr();
       param->load_for_store(addr->type());
-      if (addr->type() == T_LONG || addr->type() == T_DOUBLE) {
-        __ unaligned_move(param->result(), addr);
-      } else {
-        __ move(param->result(), addr);
-      }
+      if (addr->type() == T_OBJECT) {
+        __ move_wide(param->result(), addr);
+      } else
+        if (addr->type() == T_LONG || addr->type() == T_DOUBLE) {
+          __ unaligned_move(param->result(), addr);
+        } else {
+          __ move(param->result(), addr);
+        }
     }
   }
 
@@ -2368,7 +2369,7 @@
     } else {
       assert(loc->is_address(), "just checking");
       receiver->load_for_store(T_OBJECT);
-      __ move(receiver->result(), loc);
+      __ move_wide(receiver->result(), loc->as_address_ptr());
     }
   }
 }
@@ -2716,7 +2717,9 @@
   } else if (level == CompLevel_full_profile) {
     offset = in_bytes(backedge ? methodDataOopDesc::backedge_counter_offset() :
                                  methodDataOopDesc::invocation_counter_offset());
-    __ oop2reg(method->method_data()->constant_encoding(), counter_holder);
+    ciMethodData* md = method->method_data_or_null();
+    assert(md != NULL, "Sanity");
+    __ oop2reg(md->constant_encoding(), counter_holder);
     meth = new_register(T_OBJECT);
     __ oop2reg(method->constant_encoding(), meth);
   } else {