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-rw-r--r--llvm/lib/CodeGen/MachineVerifier.cpp7
1 files changed, 7 insertions, 0 deletions
diff --git a/llvm/lib/CodeGen/MachineVerifier.cpp b/llvm/lib/CodeGen/MachineVerifier.cpp
index f07856d..b6121c7 100644
--- a/llvm/lib/CodeGen/MachineVerifier.cpp
+++ b/llvm/lib/CodeGen/MachineVerifier.cpp
@@ -1488,6 +1488,13 @@ void MachineVerifier::visitMachineInstrBefore(const MachineInstr *MI) {
if (MI->isInlineAsm())
verifyInlineAsm(MI);
+ // A fully-formed DBG_VALUE must have a location. Ignore partially formed
+ // DBG_VALUEs: these are convenient to use in tests, but should never get
+ // generated.
+ if (MI->isDebugValue() && MI->getNumOperands() == 4)
+ if (!MI->getDebugLoc())
+ report("Missing DebugLoc for debug instruction", MI);
+
// Check the MachineMemOperands for basic consistency.
for (MachineMemOperand *Op : MI->memoperands()) {
if (Op->isLoad() && !MI->mayLoad())