re PR target/80846 (auto-vectorized AVX2 horizontal sum should narrow to 128b right away, to be more efficient for Ryzen and Intel)
PR target/80846
* config/i386/i386.c (ix86_expand_vector_init_general): Handle
V2TImode and V4TImode.
(ix86_expand_vector_extract): Likewise.
* config/i386/sse.md (VMOVE): Enable V4TImode even for just
TARGET_AVX512F, instead of only for TARGET_AVX512BW.
(ssescalarmode): Handle V4TImode and V2TImode.
(VEC_EXTRACT_MODE): Add V4TImode and V2TImode.
(*vec_extractv2ti, *vec_extractv4ti): New insns.
(VEXTRACTI128_MODE): New mode iterator.
(splitter for *vec_extractv?ti first element): New.
(VEC_INIT_MODE): New mode iterator.
(vec_init<mode>): Consolidate 3 expanders into one using
VEC_INIT_MODE mode iterator.
* gcc.target/i386/avx-pr80846.c: New test.
* gcc.target/i386/avx2-pr80846.c: New test.
* gcc.target/i386/avx512f-pr80846.c: New test.
From-SVN: r250397
