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splitres_merge_values
2012 Mar 24
0
[LLVMdev] DAG type Legalizer bug?
The following looks like a bug in the legalizer to me.
DAGTypeLegalizer::SplitRes_MERGE_VALUES(SDNode*N, unsigned ResNo, SDValue& Lo, SDValue& Hi) {
SDValue Op = DisintegrateMERGE_VALUES(N, ResNo);
GetSplitOp(Op, Lo, Hi);
}
DisintegrateMERGE_VALUE() returns SDValue(N, ResNo), where N is the MERGE_VALUE node itself.
Then GetSplitOp() tries to retrieve split result for N from th...