[Bug rtl-optimization/77499] [7/8/9 Regression] Regression after code-hoisting, due to combine pass failing to evaluate known value range

[law at redhat dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77499

--- Comment #17 from Jeffrey A. Law <law at redhat dot com> ---
So if one manually does the sinking I suggest in c#14, we get the key insns
into their own block (it's not *that* convoluted).  That's still not enough to
address the regression in this BZ.  We lose the undesired extension, but we end
up with extra insns to implement the conditional move.