[Bug tree-optimization/88854] redundant store after load that would makes aliasing UB

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88854

--- Comment #8 from Richard Biener <rguenth at gcc dot gnu.org> ---
After the fix for PR10112 we still need to handle the case to insert an
additional hashtable entry when we found a value to CSE to (see comment #1).