[Bug tree-optimization/71691] [6/7 Regression] wrong code at -O3 in both 32-bit and 64-bit modes on x86_64-linux-gnu (Floating point exception)

[law at redhat dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71691

--- Comment #8 from Jeffrey A. Law <law at redhat dot com> ---
Actually it's just the code that implies a range on the "other" side of an
equality test against a boolean.  So it'd just be reverting the patch for 69270
that hits uncprop -- which just improves codesize & coalescing in a tiny way. 
I don't offhand think the DOM changes related to 69270 would have to be
removed.