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-rw-r--r--llvm/utils/TableGen/CodeGenInstruction.cpp2
1 files changed, 1 insertions, 1 deletions
diff --git a/llvm/utils/TableGen/CodeGenInstruction.cpp b/llvm/utils/TableGen/CodeGenInstruction.cpp
index 7c5e6fcc9b9..4bea96927c7 100644
--- a/llvm/utils/TableGen/CodeGenInstruction.cpp
+++ b/llvm/utils/TableGen/CodeGenInstruction.cpp
@@ -537,7 +537,7 @@ bool CodeGenInstAlias::tryAliasOpMatch(DagInit *Result, unsigned AliasOpNo,
// If both are Operands with the same MVT, allow the conversion. It's
// up to the user to make sure the values are appropriate, just like
// for isel Pat's.
- if (InstOpRec->isSubClassOf("Operand") &&
+ if (InstOpRec->isSubClassOf("Operand") && ADI &&
ADI->getDef()->isSubClassOf("Operand")) {
// FIXME: What other attributes should we check here? Identical
// MIOperandInfo perhaps?
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