https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105753
Georg-Johann Lay <gjl at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Known to fail| |13.1.0
CC| |gjl at gcc dot gnu.org
--- Comment #16 from Georg-Johann Lay <gjl at gcc dot gnu.org> ---
...also from the combine dump, combine hallucinates about an insn that does not
exist:
Trying 11 -> 15:
11: {r54:SI=udiv(r49:SI,r56:SI);r55:SI=umod(r49:SI,r56:SI);clobber
r18:SI;clobber r22:SI;clobber r26:HI;clobber r30:HI;}
REG_UNUSED r30:HI
REG_UNUSED r26:HI
REG_UNUSED r22:SI
REG_UNUSED r18:SI
15: r49:SI=r54:SI
REG_DEAD r54:SI
Successfully matched this instruction:
(parallel [
(set (reg/v:SI 49 [ n ])
(udiv:SI (reg/v:SI 49 [ n ])
(reg:SI 56)))
(set (reg:SI 55)
(umod:SI (reg/v:SI 49 [ n ])
(reg:SI 56)))
])
EMERGENCY DUMP:
Such an insn does not exist, because only versoins with hard-reg clobbers exist
which represent the transparent libcall to __udivmodsi4.
The "emergency dump" then shows the non-existing udiv and umod insns as of
comment 15.
