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-rw-r--r--utils/TableGen/DAGISelEmitter.cpp3
1 files changed, 3 insertions, 0 deletions
diff --git a/utils/TableGen/DAGISelEmitter.cpp b/utils/TableGen/DAGISelEmitter.cpp
index 81a45e1d85..e9d5c42142 100644
--- a/utils/TableGen/DAGISelEmitter.cpp
+++ b/utils/TableGen/DAGISelEmitter.cpp
@@ -1342,6 +1342,9 @@ void DAGISelEmitter::ParseInstructions() {
// Check that it exists in InstResults.
TreePatternNode *RNode = InstResults[OpName];
+ if (RNode == 0)
+ I->error("Operand $" + OpName + " does not exist in operand list!");
+
if (i == 0)
Res0Node = RNode;
Record *R = dynamic_cast<DefInit*>(RNode->getLeafValue())->getDef();