On Jul 17 2018, Andreas Schwab <sch...@linux-m68k.org> wrote: > The mulu.l insn sets the CC according to the 64-bit result, but we are > only using the high part, so the Z flag cannot be used. The other flags > would still be valid, but we have no cc_status flag for that case. > > * config/m68k/m68k.md (umulsi3_highpart+1, const_umulsi3_highpart) > (smulsi3_highpart+1, const_smulsi3_highpart): Add CC_STATUS_INIT. > > testsuite/: > * gcc.target/m68k/mulsi_highpart.c: New test.
Backported to gcc-8 branch to fix PR target/86820. Andreas. -- Andreas Schwab, sch...@linux-m68k.org GPG Key fingerprint = 7578 EB47 D4E5 4D69 2510 2552 DF73 E780 A9DA AEC1 "And now for something completely different."
