[Bug middle-end/112359] [14 Regression] ICE: in expand_fn_using_insn, at internal-fn.cc:215 with -O -ftree-loop-if-convert -mavx512fp16

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112359

--- Comment #2 from Robin Dapp <rdapp at gcc dot gnu.org> ---
Would something like

+  bool allow_cond_op = flag_tree_loop_vectorize
+    && !gimple_bb (phi)->loop_father->dont_vectorize;

in convert_scalar_cond_reduction be sufficient or are the more conditions to
check still?  Testing with the above and the reduced testcase worked FWIW.