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DAG: Use poison for filler values on legalize error paths #170556

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Merged
arsenm merged 1 commit into from
Dec 3, 2025
+2 −2
Merged

DAG: Use poison for filler values on legalize error paths #170556

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4 changes: 2 additions & 2 deletions llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -2130,7 +2130,7 @@ SelectionDAGLegalize::ExpandLibCall(RTLIB::Libcall LC, SDNode *Node,
if (const char *LibcallName = TLI.getLibcallName(LC))
Callee = DAG.getExternalSymbol(LibcallName, CodePtrTy);
else {
Callee = DAG.getUNDEF(CodePtrTy);
Callee = DAG.getPOISON(CodePtrTy);
DAG.getContext()->emitError(Twine("no libcall available for ") +
Node->getOperationName(&DAG));
}
Expand Down Expand Up @@ -4992,7 +4992,7 @@ void SelectionDAGLegalize::ConvertNodeToLibcall(SDNode *Node) {
// If the exponent does not match with sizeof(int) a libcall to
// RTLIB::POWI would use the wrong type for the argument.
DAG.getContext()->emitError("POWI exponent does not match sizeof(int)");
Results.push_back(DAG.getUNDEF(Node->getValueType(0)));
Results.push_back(DAG.getPOISON(Node->getValueType(0)));
break;
}
ExpandFPLibCall(Node, LC, Results);
Expand Down
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