[Bug tree-optimization/110963] [14 Regression] Dead Code Elimination Regression since r14-2946-g46c8c225455

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110963

--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
So we're now doing an additional sinking:

Sinking # VUSE <.MEM_2(D)>
pretmp_12 = h;
 from bb 2 to bb 4
Removing basic block 9

that's the only IL difference on GIMPLE, without this we optimize away foo
during RTL optimization during RTL PRE.