1 files changed, 19 insertions, 0 deletions
diff --git a/llvm/lib/CodeGen/MachineInstr.cpp b/llvm/lib/CodeGen/MachineInstr.cpp
index 271cd01..53e67225 100644
--- a/llvm/lib/CodeGen/MachineInstr.cpp
+++ b/llvm/lib/CodeGen/MachineInstr.cpp
@@ -674,6 +674,25 @@ bool MachineInstr::isIdenticalTo(const MachineInstr &Other,
   return true;
 }
 
+bool MachineInstr::isEquivalentDbgInstr(const MachineInstr &Other) const {
+  if (!isDebugValue() || !Other.isDebugValue())
+    return false;
+  if (getDebugLoc() != Other.getDebugLoc())
+    return false;
+  if (getDebugVariable() != Other.getDebugVariable())
+    return false;
+  if (getNumDebugOperands() != Other.getNumDebugOperands())
+    return false;
+  for (unsigned OpIdx = 0; OpIdx < getNumDebugOperands(); ++OpIdx)
+    if (!getDebugOperand(OpIdx).isIdenticalTo(Other.getDebugOperand(OpIdx)))
+      return false;
+  if (!DIExpression::isEqualExpression(
+          getDebugExpression(), isIndirectDebugValue(),
+          Other.getDebugExpression(), Other.isIndirectDebugValue()))
+    return false;
+  return true;
+}
+
 const MachineFunction *MachineInstr::getMF() const {
   return getParent()->getParent();
 }