From 305c5ea8fed5bca224377c1bdd8c726fac0f926f Mon Sep 17 00:00:00 2001
From: Davit Grigoryan <ggc.language@gmail.com>
Date: Tue, 14 Apr 2026 03:06:42 +0000
Subject: create separate scoreboard for I-Buf's second slot; fix other minor
 issues

---
 src/gpgpu-sim/scoreboard.h | 9 +++++++++
 1 file changed, 9 insertions(+)

(limited to 'src/gpgpu-sim/scoreboard.h')

diff --git a/src/gpgpu-sim/scoreboard.h b/src/gpgpu-sim/scoreboard.h
index 1fe0923..9bf51e6 100644
--- a/src/gpgpu-sim/scoreboard.h
+++ b/src/gpgpu-sim/scoreboard.h
@@ -50,6 +50,12 @@ class Scoreboard {
   void printContents() const;
   const bool islongop(unsigned warp_id, unsigned regnum);
 
+  // Secondary scoreboard for intra-warp co-issue (split-level tracking)
+  void reserveRegisterSecondary(unsigned wid, unsigned regnum);
+  void releaseRegisterSecondary(unsigned wid, unsigned regnum);
+  bool checkCollisionSecondary(unsigned wid, const inst_t *inst) const;
+  void clearSecondary(unsigned wid);
+
  private:
   void reserveRegister(unsigned wid, unsigned regnum);
   int get_sid() const { return m_sid; }
@@ -62,6 +68,9 @@ class Scoreboard {
   // Register that depend on a long operation (global, local or tex memory)
   std::vector<std::set<unsigned> > longopregs;
 
+  // Secondary path register tracking (for I-Buffer half 1, intra-warp co-issue)
+  std::vector<std::set<unsigned> > sec_reg_table;
+
   class gpgpu_t *m_gpu;
 };
 
-- 
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