[Bug rtl-optimization/77416] [7 Regression] LRA rematerializing use of CA reg across function call

[pthaugen at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77416

--- Comment #4 from Pat Haugen <pthaugen at gcc dot gnu.org> ---
Didn't really think of this before, but the call isn't necessarily the problem,
addze sets the CA bit too. So it's invalid to remataterialize the addze after
an addze.