inorder: make marking of dest. regs an explicit request

formerly, this was implicit when you accessed the execution unit
or the use-def unit but it's better that this just be something
that a user can specify.

1 files changed, 7 insertions, 6 deletions

diff --git a/src/cpu/inorder/resources/use_def.cc b/src/cpu/inorder/resources/use_def.cc
index 642998021..a66b64bfc 100644
--- a/src/cpu/inorder/resources/use_def.cc
+++ b/src/cpu/inorder/resources/use_def.cc
@@ -172,12 +172,6 @@ UseDefUnit::execute(int slot_idx)
         *nonSpecSeqNum[tid] = seq_num;
     }
 
-    //@todo: may want to make a separate schedule entry for setting
-    //       destination register dependencies
-    if (!inst->isRegDepEntry()) {
-        regDepMap[tid]->insert(inst);
-    }
-
     switch (ud_req->cmd)
     {
       case ReadSrcReg:
@@ -446,6 +440,13 @@ UseDefUnit::execute(int slot_idx)
         }
         break;
 
+      case MarkDestRegs:
+        {
+            regDepMap[tid]->insert(inst);
+            ud_req->done();
+        }
+        break;
+
       default:
         fatal("Unrecognized command to %s", resName);
     }