1 files changed, 10 insertions, 0 deletions
diff --git a/llvm/lib/CodeGen/LiveDebugValues/LiveDebugValues.cpp b/llvm/lib/CodeGen/LiveDebugValues/LiveDebugValues.cpp
index 770c46e..38e803d 100644
--- a/llvm/lib/CodeGen/LiveDebugValues/LiveDebugValues.cpp
+++ b/llvm/lib/CodeGen/LiveDebugValues/LiveDebugValues.cpp
@@ -14,6 +14,7 @@
 #include "llvm/CodeGen/Passes.h"
 #include "llvm/InitializePasses.h"
 #include "llvm/Pass.h"
+#include "llvm/Support/CommandLine.h"
 #include "llvm/Target/TargetMachine.h"
 
 /// \file LiveDebugValues.cpp
@@ -33,6 +34,12 @@
 
 using namespace llvm;
 
+static cl::opt<bool>
+    ForceInstrRefLDV("force-instr-ref-livedebugvalues", cl::Hidden,
+                     cl::desc("Use instruction-ref based LiveDebugValues with "
+                              "normal DBG_VALUE inputs"),
+                     cl::init(false));
+
 /// Generic LiveDebugValues pass. Calls through to VarLocBasedLDV or
 /// InstrRefBasedLDV to perform location propagation, via the LDVImpl
 /// base class.
@@ -87,6 +94,9 @@ bool LiveDebugValues::runOnMachineFunction(MachineFunction &MF) {
       InstrRefBased = TM.Options.ValueTrackingVariableLocations;
     }
 
+    // Allow the user to force selection of InstrRef LDV.
+    InstrRefBased |= ForceInstrRefLDV;
+
     if (InstrRefBased)
       TheImpl = llvm::makeInstrRefBasedLiveDebugValues();
     else