da591d390e
Previously, tblgen would reject patterns where one of its nested instructions produced more than one result. These arise when the instruction definition contains 'outs' as well as 'Defs'. This patch fixes that by always taking the first result, which is how these situations are handled in SelectionIDAG. Original patch: https://reviews.llvm.org/D86617 Continued as: https://github.com/llvm/llvm-project/pull/81130