[Bug middle-end/94423] [10 Regression] ICE in replace_uses_by with -O2 -fsanitize=object-size since r10-6332

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94423

--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
Comment on attachment 48151
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=48151
gcc10-pr94423.patch

If one replaces a SSA_NAME_OCCURS_IN_ABNORMAL_PHI def with another SSA name
one has to set SSA_NAME_OCCURS_IN_ABNORMAL_PHI on it.  I suppose lhs is
released
afterwards?