From 6c7cecc81a4c7e06e26027e21edd2cfd95a37a0b Mon Sep 17 00:00:00 2001
From: Richard-Qin-X <richard.qin.001@gmail.com>
Date: Sun, 9 Aug 2026 00:27:27 +0800
Subject: [CodeGen] Implement machine liveness analysis

---
 backend/include/rcc/CodeGen/MachineBasicBlock.h | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'backend/include/rcc/CodeGen/MachineBasicBlock.h')

diff --git a/backend/include/rcc/CodeGen/MachineBasicBlock.h b/backend/include/rcc/CodeGen/MachineBasicBlock.h
index d82477a..da538db 100644
--- a/backend/include/rcc/CodeGen/MachineBasicBlock.h
+++ b/backend/include/rcc/CodeGen/MachineBasicBlock.h
@@ -113,6 +113,9 @@ public:
   [[nodiscard]] Expected<void> addLiveIn(PhysicalRegister PhysReg,
                                          LaneMask Lanes = LaneMask::all());
   [[nodiscard]] Expected<void> removeLiveIn(PhysicalRegister PhysReg);
+  void clearLiveIns() noexcept {
+    LiveIns.clear();
+  }
   [[nodiscard]] std::span<const MachineBasicBlockLiveIn> liveIns() const noexcept {
     return LiveIns;
   }
-- 
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