[Bug middle-end/108657] [13 Regression] csmith: possible wrong checksum with -O3 and -ftrivial-auto-var-init=zero

[pinskia at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108657

--- Comment #18 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
fre5 deletes it:
Deleted redundant store c = 1;
Value numbering stmt = foo ();
Setting value number of .MEM_14 to .MEM_14 (changed)
Value numbering stmt = return 0;
RPO iteration over 7 blocks visited 7 blocks in total discovering 7 executable
blocks iterating 1.0 times, a block was visited max. 1 times
RPO tracked 20 values available at 1 locations and 20 lattice elements
Removing dead stmt c = 1;