[X86] Widen (v2i32 (fp_to_uint v2f64)) to (v8i32 (fp_to_uint v8f64)) during legalization if we have AVX512F, but not VLX. NFC

Previously we widened it using isel patterns.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@320824 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed