[llvm-commits] [llvm] r128155 - /llvm/trunk/lib/CodeGen/AsmPrinter/DwarfDebug.cpp

[Jakob Stoklund Olesen]

Author: stoklund
Date: Wed Mar 23 13:37:30 2011
New Revision: 128155

URL: http://llvm.org/viewvc/llvm-project?rev=128155&view=rev
Log:
Don't coalesce identical DBG_VALUE instructions prematurely.

Each of these instructions may have a RegsClobberInsn entry that can't be
ignored. Consecutive ranges are coalesced later when DwarfDebug::emitDebugLoc
merges entries.

Modified:
    llvm/trunk/lib/CodeGen/AsmPrinter/DwarfDebug.cpp

Modified: llvm/trunk/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/AsmPrinter/DwarfDebug.cpp?rev=128155&r1=128154&r2=128155&view=diff
==============================================================================
--- llvm/trunk/lib/CodeGen/AsmPrinter/DwarfDebug.cpp (original)
+++ llvm/trunk/lib/CodeGen/AsmPrinter/DwarfDebug.cpp Wed Mar 23 13:37:30 2011
@@ -2419,14 +2419,12 @@
     if (Processed.count(DV) != 0)
       continue;
 
-    const MachineInstr *PrevMI = MInsn;
     for (SmallVector<const MachineInstr *, 8>::iterator MI = I+1,
            ME = DbgValues.end(); MI != ME; ++MI) {
       const MDNode *Var =
         (*MI)->getOperand((*MI)->getNumOperands()-1).getMetadata();
-      if (Var == DV && !PrevMI->isIdenticalTo(*MI))
+      if (Var == DV)
         MultipleValues.push_back(*MI);
-      PrevMI = *MI;
     }
 
     DbgScope *Scope = NULL;