https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91626
--- Comment #7 from Michael Matz <matz at gcc dot gnu.org> --- I've added it verbatim from PR48622, which itself was an autoreduced testcase for an ICE, at the time preventing bootstrapping. I haven't verified if making the testcase conforming C (i.e. provide a definition of ashift_qi_1) would reproduce the problem, but the missing of a definition might be crucial. Maybe we could simply disable this test on hpux?