llvm-project

202441ca - [DAG] FoldConstantArithmetic - add SMUL_LOHI/UMUL_LOHI handling (#239207)

[DAG] FoldConstantArithmetic - add SMUL_LOHI/UMUL_LOHI handling (#239207) Followup to #228877 which added support for constant folding nodes with multiple results Move the SMUL_LOHI/UMUL_LOHI constant folds out of getNode and into FoldConstantArithmetic