[Bug tree-optimization/106073] [12/13/14/15 Regression] wrong code at -O3 on x86_64-linux-gnu since r12-3903-g0288527f47cec669

[sjames at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106073

--- Comment #12 from Sam James <sjames at gcc dot gnu.org> ---
Ah, thanks.

Let's add the testcase too, if no objection? The topic is a prickly one and
PR90348 was somewhat worked around.