From 4fcebbd4d42a85548ff1d67916a5a58703dd0a06 Mon Sep 17 00:00:00 2001
From: Yan Xu <934348725@qq.com>
Date: Wed, 18 Dec 2024 10:26:56 +0800
Subject: [PATCH] cpu-o3: using writebuffer regCache (#236)

Change-Id: I4e8d600c191ab74e54f19776f48c098d6df9450a
---
 src/cpu/o3/issue_queue.cc | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/src/cpu/o3/issue_queue.cc b/src/cpu/o3/issue_queue.cc
index fe972fd29f..a53182b095 100644
--- a/src/cpu/o3/issue_queue.cc
+++ b/src/cpu/o3/issue_queue.cc
@@ -928,8 +928,6 @@ Scheduler::useRegfilePort(const DynInstPtr& inst, const PhysRegIdPtr& regid, int
         if (regCache.contains(regid->flatIndex())) {
             regCache.get(regid->flatIndex());
             return;
-        } else {
-            regCache.insert(regid->flatIndex(), {});
         }
     }
     assert(typePortId < rfPortOccupancy.size());
@@ -1016,6 +1014,7 @@ Scheduler::writebackWakeup(const DynInstPtr& inst)
             continue;
         }
         scoreboard[dst->flatIndex()] = true;
+        regCache.insert(dst->flatIndex(), {});
     }
     for (auto it : issueQues) {
         it->wakeUpDependents(inst, false);