[Bug tree-optimization/108402] False positive Wuninitialized with ftrivial-auto-var-init=pattern

[pefoley2 at pefoley dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108402

--- Comment #4 from pefoley2 at pefoley dot com ---
Yeah, I had a lot of trouble getting creduce to do something sane with the
testcase that didn't wind up just deleting everything.
I wound up trying delta, which got me a smaller, but still enormous repo.
It should also be reproducible via make O=um ARCH=um allyesconfig
drivers/spi/spi-stm32-qspi.o in a 6.1 linux kernel tree.