https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79487
--- Comment #7 from Dominik Vogt <vogt at linux dot vnet.ibm.com> --- (In reply to Andreas Krebbel from comment #5) > Perhaps we have to do the real_convert unconditionally?! The real_convert to "mode" is not enough. Before converting to the target mode, the constant needs to be truncted to the source mode first.