https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118755
--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
I think the first thing we could do is (from fwprop1):
```
propagating insn 13 into insn 14, replacing:
(set (reg:SI 103 [ _3 ])
(reg/v:SI 104 [ <retval> ]))
successfully matched this instruction to *zero_extendqisi2_aarch64:
(set (reg:SI 103 [ _3 ])
(zero_extend:SI (subreg:QI (reg:SI 108) 0)))
original cost = 4 (weighted: 4.000000), replacement cost = 4 (weighted:
4.000000); rejecting replacement
change not profitable
propagating insn 13 into insn 15, replacing:
(set (reg:SI 109)
(and:SI (reg/v:SI 104 [ <retval> ])
(const_int 1 [0x1])))
failed to match this instruction:
(set (reg:SI 109)
(zero_extend:SI (and:QI (subreg:QI (reg:SI 108) 0)
(const_int 1 [0x1]))))
```
That should just be simplified to:
(set (reg:SI 109) (and:SI (reg:SI 108) (const_int 1 [0x1])))
Though I am not sure this will fix everything.
