[Bug tree-optimization/84956] ICE in replace_block_by, at tree-ssa-tail-merge.c:1546

[vries at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84956

--- Comment #3 from Tom de Vries <vries at gcc dot gnu.org> ---
(In reply to Tom de Vries from comment #2)
> Created attachment 43722 [details]
> Tentative patch

Bootstrapped and reg-tested on x86_64, no issues found.