Skip identical instruction while calculating DBG_VALUE range.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105340 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/AsmPrinter/DwarfDebug.cpp b/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
index 4a88545..eca94cb 100644
--- a/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
+++ b/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
@@ -2180,12 +2180,15 @@
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 && isDbgValueInDefinedReg(*MI))
+ if (Var == DV && isDbgValueInDefinedReg(*MI) &&
+ !PrevMI->isIdenticalTo(*MI))
MultipleValues.push_back(*MI);
+ PrevMI = *MI;
}
DbgScope *Scope = findDbgScope(MInsn);