[Bug tree-optimization/95001] std::terminate() and abort() do not have __builtin_unreachable() semantics

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95001

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
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                 CC|                            |jakub at gcc dot gnu.org

--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
My understanding of the request is to handle other noreturn functions in
assert_unreachable_fallthru_edge_p (or in callers of that function next to that
predicate), probably with similar requirements that there is no code before the
noreturn call.  Though, I think that is something we can't do, for
__builtin_unreachable we can add the range info on the guarding SSA_NAME
because otherwise the program invokes UB.  That is not the case with abort or
std::terminate, the program doesn't invoke UB, just calls the noreturn
function.