[Bug tree-optimization/118404] [15 regression] ICE when building openvdb-12.0.0 in ifcombine

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118404

--- Comment #2 from Sam James <sjames at gcc dot gnu.org> ---
The reason I filed it separately is the "rare if that" comment in the commit
message.