[Bug rtl-optimization/78575] [7 Regression] ICE: in trunc_int_for_mode, at explow.c:55 with -O2 -g

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78575

--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
I think MEMs just shouldn't be shared, and at least in quick skimming I haven't
found anything the the DEBUG_INSNs that would look invalid.
What I think is wrong is that DECL_INCOMING_RTL and DECL_RTL of the PARM_DECL
is changed, I think var-tracking uses those.