[Bug tree-optimization/88567] [9 Regression] ICE in get_initial_defs_for_reduction when building 521.wrf_r on AArch64 SVE

[rsandifo at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88567

--- Comment #4 from rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> 
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BTW, turns out that this is the same ICE as gcc.dg/vect/pr63379.c,
which was on my list of things to look at in stage 4.