[Bug tree-optimization/66573] Unexpected change in static, branch-prediction cost from O1 to O2 in if-then-else.

[gcc-bugs at hussar dot me.uk]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66573

--- Comment #12 from Jason <gcc-bugs at hussar dot me.uk> ---
This significant change appears to have been resolved in g++ v8.1.0. So now g++
does the same as the massive corpus of computer science and other compilers.