[Bug target/96854] [10 Regression] avx vectorizer breaks complex arithmetic

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96854

--- Comment #7 from Richard Biener <rguenth at gcc dot gnu.org> ---
On trunk we fail the SLP reduction vectorization because a VEC_PERM SLP
reduction
operation is not supported by epilogue generation.