[Bug rtl-optimization/94045] [i686] Compiler hang with -O2 -g -m32 -march=i686 -mtune=generic

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94045

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

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

--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
BTW, unpatched gcc doesn't really hang, but it takes 16m31s to compile it, so
over 5 times longer than with the patch.
Besides turning it into a param, other possibilities include guarding the
punting  also with cselib_preserve_constants, or doing it only for
cselib_preserved_value_p vals above the depth, etc.
Richard, any opinions on this?