[Bug rtl-optimization/82621] [6/7/8 Regression] wrong code with -Og -fgcse -fweb

[segher at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82621

--- Comment #6 from Segher Boessenkool <segher at gcc dot gnu.org> ---
Fixed on trunk, backports pending.