[Bug target/77289] [7 Regression] ICE in extract_constrain_insn, at recog.c:2212 on powerpc64

[segher at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77289

--- Comment #3 from Segher Boessenkool <segher at gcc dot gnu.org> ---
And this 208 vs. sfp is created by combine:

Trying 76 -> 77:
Successfully matched this instruction:
(parallel [
        (set (reg:SF 33 1)
            (mem:SF (plus:SI (reg/f:SI 113 sfp)
                    (const_int 8 [0x8])) [1 MEM[base: _17, offset: 0B]+0 S4
A32]))
        (set (reg:SI 208 [ ivtmp.6 ])
            (plus:SI (reg/f:SI 113 sfp)
                (const_int 8 [0x8])))
    ])