[Bug middle-end/66375] [4.8/4.9/5 Regression] wrong code at -O2 and -O3 on x86_64-linux-gnu

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66375

--- Comment #8 from Richard Biener <rguenth at gcc dot gnu.org> ---
Bootstrapped / tested on x86_64-unknown-linux-gnu with no regressions...
testing a more complete fix (applying this to all cases in
follow_ssa_edge_binary)
now.