As announced here: http://lists.llvm.org/pipermail/llvm-dev/2019-April/131786.html Grouped option syntax (POSIX Utility Conventions) does not play well with -long-option A subsequent change will reject -long-option.
Reviewers: fhahn, rengolin, t.p.northover, echristo, olista01, SjoerdMeijer Reviewed By: SjoerdMeijer Subscribers: SjoerdMeijer, aemerson, javed.absar, tschuett, kristof.beyls, llvm-commits Differential Revision: https://reviews.llvm.org/D41900 llvm-svn: 322951