[Bug target/96015] [10/11 Regression] gcc-10.1.0 miscompiles Python on hppa

[slyfox at inbox dot ru]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96015

--- Comment #22 from Sergei Trofimovich <slyfox at inbox dot ru> ---
(In reply to Martin Liška from comment #17)
> For me tree optimized dump is correct, so likely a target issue.

Yeah, I agree. I finally understood why memory loads disappear (duh!).

> @Sergei: Is GCC 9 working properly?
> Would it be possible to bisect that?

gcc-9 seems to work, bu I'm not sure if it's intentional or unrelated
optimization passes change the code enough.

I'll try to cook up even smaller example given that -fno-delayed-branch seems
to be a culprit and then bisect gcc.