[Bug target/94238] [10 Regression] ICE in ix86_cc_mode, at config/i386/i386.c:15285 since r10-7268-g529ea7d9596b26ba

[law at redhat dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94238

--- Comment #3 from Jeffrey A. Law <law at redhat dot com> ---
Got it.  simplify-rtx does not validate that a comparison opcode it simplifies
to is valid for the mode.    Fixing looks trivial.  Unfortunately something
happened overnight that is causing regressions all over the tester, so I want
to fix that first, then throw my simpify-rtx fix into the tester.  Regardless,
I'll own this.

Essentially it has

(ior (lt (...)) (gt (...)) and simplifies that to (ltgt (...)) which isn't
valid for integer or vector modes.