[Bug tree-optimization/99776] missed optimization for dead code elimination at -O3 (vs. -O1)

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99776

--- Comment #7 from Richard Biener <rguenth at gcc dot gnu.org> ---
*** Bug 99986 has been marked as a duplicate of this bug. ***