[Bug tree-optimization/108520] [13 Regression] ICE in nonnull_arg_p, at tree.cc:14372 with -O1 and above (gnu::assume and gnu::nonnull)

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108520

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |aldyh at gcc dot gnu.org,
                   |                            |amacleod at redhat dot com,
                   |                            |jakub at gcc dot gnu.org

--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
So, unless nothing in the ranger uses cfun but passes around struct function
*fun
on which it should operate, I think gimple_infer_range::check_assume_func needs
to
temporarily set_cfun to fun and switch it back later.
Generally set_cfun is fairly expensive, but for the assumption functions one
would hope that at least in most cases they have the same optimization and
target nodes as the "caller".