From: Devang Patel <dpatel@apple.com>
Date: Tue, 21 Jun 2011 23:02:36 +0000 (+0000)
Subject: After register is spilled there should not be any DBG_VALUE referring the same register.
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=6f373a87cba3b0c88bc76bf1d03ee5f81143764f;p=oota-llvm.git

After register is spilled there should not be any DBG_VALUE referring the same register.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133569 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/CodeGen/RegAllocFast.cpp b/lib/CodeGen/RegAllocFast.cpp
index dd5baab8d86..0f27dfcf884 100644
--- a/lib/CodeGen/RegAllocFast.cpp
+++ b/lib/CodeGen/RegAllocFast.cpp
@@ -293,9 +293,11 @@ void RAFast::spillVirtReg(MachineBasicBlock::iterator MI,
         MachineBasicBlock *MBB = DBG->getParent();
         MBB->insert(MI, NewDV);
         DEBUG(dbgs() << "Inserting debug info due to spill:" << "\n" << *NewDV);
-        LRIDbgValues[li] = NewDV;
       }
     }
+    // Now this register is spilled there is should not be any DBG_VALUE pointing
+    // to this register because they are all pointing to spilled value now.
+    LRIDbgValues.clear();
     if (SpillKill)
       LR.LastUse = 0; // Don't kill register again
   }